UA130054C2 - EVAPORATOR AND COLLECTOR DESIGNED FOR INSERTION INTO EVAPORATOR CARTRIDGE - Google Patents

Abstract

A vaporization device includes a cartridge (1320) for a vaporizer device. For example, the vaporizer cartridge and/or features thereof may improve management of leaks of vaporizable material (1302) from the vaporizer cartridge, control of airflow within and/or near the vaporizer cartridge, heating of vaporizable material in the vaporizer cartridge, management of condensate in the vaporizer cartridge, and/or other assembly features of the vaporizer cartridge. Related systems, methods, and articles of manufacture are also described.

Description

Cross-reference to related applications

This application claims priority to prior U.S. application Ser. No. 62/915,005, filed October 14, 2019, entitled "SAKTKIYUSE BOK A MAROKILEK OEMISE", prior U.S. application Ser. No. 62/812,161, filed February 28, 2019, entitled "SAKTKIYUSE ROK A MAROKI2EK OEMISE", prior U.S. application Ser. No. 62/747,099, filed October 17, 2018, entitled "ZHMISK REEEEO AMO

NEATIMO EGEMEMTZ5 IM A MAROKI2EK OEMISE", U.S. provisional application Mo 62/812,148, filed February 28, 2019 and entitled "KEZEKMOYIK OMEKEG OM SOMTKOI UMITN SOMTKISTIOM ROIMT5", U.S. provisional application Mo 62/747,055, filed October 17, 2018 and entitled "KEZEKMOYIK

OMEKERG OM SOMTKOI", U.S. Provisional Application No. 62/747,130, filed October 17, 2018 and entitled "U AROKILEK SOMOEMZATE SOGGESTIOM AMO KESUSIIMO

Mo 62/913,135, filed October 9, 2019, entitled "NEATIMO EGEMEMT", and U.S. application Mo 16/653,455, filed October 15, 2019, entitled "NEATIMO EGEMEMT", the entire contents of which are incorporated herein by reference to the extent permitted.

ENGINEERING INDUSTRY

The disclosed subject matter generally relates to features of a vaporizer cartridge and, in some embodiments, to controlling leakage of liquid vaporizable material, controlling airflow within and near the cartridge, heating the vaporizable material to result in the formation of an aerosol, and/or other features of a cartridge assembly and a device to which it may be removably connected.

PRIOR ART

Vaporizing devices, generally referred to herein as vaporizers, include devices that heat a vaporizable material (e.g., a liquid, plant material, some other solid, wax, etc.) to a temperature sufficient to release one or more compounds from the vaporized material in a form (e.g., as a gas, aerosol, etc.) in which they can be inhaled by a user of the vaporizer.

Some vaporizers, such as those in which at least one of the compounds released from the vaporized material is nicotine, may be useful as an alternative to smoking smoldering cigarettes.

BRIEF DESCRIPTION OF THE ESSENCE OF THE INVENTION

For the purpose of briefly describing the essence of the invention, some aspects, advantages and novel features are described herein. It should be understood that not all such advantages may be achieved in accordance with any particular embodiment. Thus, the disclosed subject matter may be implemented or performed in a manner that achieves or optimizes one advantage or group of advantages without achieving all of the advantages as may be disclosed or suggested herein. The various features and elements described herein may be included together or separately, except as would be impracticable based on this disclosure and as would be apparent to one skilled in the art.

In one aspect, the evaporator includes a reservoir configured to hold a liquid vaporizable material. The reservoir is at least partially defined by at least one wall, and the reservoir includes a storage chamber and an overflow volume. The evaporator further includes a collector located in the overflow volume. The collector includes a capillary structure configured to hold a volume of liquid vaporizable material in fluid contact with the storage chamber. The capillary structure includes a microfluidic element configured to prevent air and liquid from passing from each other during filling and emptying of the collector.

In one related aspect that may be incorporated into the evaporator of the preceding aspect, a microfluidic gate for controlling the flow of liquid vaporizable material between a storage chamber and an adjacent overflow volume in the evaporator includes a plurality of openings connecting the storage chamber and the manifold, and a pinch point (cutoff) between the plurality of openings.

The plurality of openings includes a first channel and a second channel. The first channel has a higher capillary action than the second channel. Optionally, the microfluidic gate may include an opening edge between the storage chamber and the collector that is flatter on the first side facing the storage chamber than on the second, more rounded side facing the collector.

In another related aspect, which may be combined with other aspects, a collector adapted to be inserted into a vaporizer cartridge includes a capillary structure adapted to maintain a volume of liquid vaporized material in fluid contact with a storage chamber of the vaporizer cartridge. The capillary structure includes a microfluidic element adapted to prevent air and liquid from passing relative to each other during filling and emptying of the collector.

In optional modifications, one or more of the following features may also be included in any possible combination. For example, a primary passage may be included to provide fluid communication between the storage chamber and a sprayer configured to convert the liquid vaporized material to a gas phase. The primary passage may be formed through the collector structure.

The primary passage may include a first channel configured to allow the liquid vaporized material to flow from the storage chamber toward the wick element in the atomizer.

The first channel may have a cross-sectional shape with at least one irregularity configured to allow the liquid in the first channel to bypass an air bubble blocking another portion of the first channel. The cross-sectional shape may resemble a cross. The capillary structure may include a secondary passageway that includes a microfluidic element, and the microfluidic element may be configured to allow the liquid vaporized material to travel along the length of the secondary passageway with only a meniscus that completely covers the cross-sectional area of the secondary passageway. The cross-sectional area may be small enough that, given the material from which the walls of the secondary passageway are formed and the composition of the liquid vaporized material, the liquid vaporized material preferentially wets the secondary passageway around the entire perimeter of the secondary passageway.

The storage chamber and the collector may be configured to maintain a continuous column of liquid vaporizable material in the collector in contact with the liquid vaporizable material in the storage chamber such that a decrease in pressure in the storage chamber relative to ambient pressure causes at least partial withdrawal of the continuous column of liquid vaporizable material in the collector back into the storage chamber. The secondary passage may include a plurality of spaced apart constriction points having a smaller cross-sectional area than the portion of the secondary passage between the constriction points. The constriction points may have a flatter surface directed along the secondary passage toward the storage chamber and a rounded surface directed along the secondary passage away from the storage chamber.

The microfluidic gate may be located between the collector and the storage chamber.

The microfluidic gate may include an opening edge between the storage chamber and the collector that is flatter on a first side facing the storage chamber than a second, more rounded side facing the collector. The microfluidic gate may include a plurality of openings connecting the storage chamber and the collector, and a cut-off point between the plurality of openings. The plurality of openings may include a first channel and a second channel, the first channel having a higher capillary action than the second channel. The air/liquid vapor meniscus reaching the cut-off point may be directed into the second channel by the higher capillary action in the first channel, such that an air bubble is formed to escape into the liquid vapor in the storage chamber.

The liquid evaporable material may include one or more of propylene glycol and vegetable glycerin.

The manifold may include a primary passageway providing fluid communication between a reservoir and a sprayer configured to convert the liquid vaporizable material to a gas phase, the primary passageway being formed through the manifold structure. In optional variations, the capillary structure may include a secondary passageway comprising a microfluidic element, and the microfluidic element may be configured to allow the liquid vaporizable material to travel along the length of the secondary passageway only with a meniscus completely covering the cross-sectional area of the secondary passageway. The cross-sectional area may be small enough that, given the material from which the walls of the secondary passageway are formed and the composition of the liquid vaporizable material, the liquid vaporizable material preferentially wets the secondary passageway along the entire perimeter of the secondary passageway. The storage chamber and the collector may be configured to maintain a continuous column of liquid vaporizable material in the collector in contact with the liquid vaporizable material in the storage chamber such that a decrease in pressure in the storage chamber relative to ambient pressure causes the continuous column of liquid vaporizable material in the collector to be at least partially drawn back into the storage chamber. The secondary passage may include a plurality of spaced apart constriction points having a smaller cross-sectional area than the portions of the secondary passage between the constriction points.

The constriction points may have a flatter surface directed along the secondary passage towards the storage chamber and a rounded surface directed along the secondary passage away from the storage chamber.

In yet another related aspect, a vaporizer cartridge includes a cartridge housing, a storage chamber disposed within the cartridge housing and configured to contain liquid vaporizable material, an inlet configured to admit air into an internal airflow path within the cartridge housing, an atomizer configured to cause at least a portion of the liquid vaporizable material to be converted to an inhalable state, and a manifold as described in the previous aspect.

In optional variations, such a vaporizer cartridge may include one or more of the features described herein, such as, for example, a wick element disposed within the internal airflow channel and in fluid communication with the reservoir. The wick element may be configured to draw liquid vaporizable material from the storage chamber by capillary action. The heating element may be positioned to cause the wick element to heat to result in the conversion of at least a portion of the liquid vaporizable material withdrawn from the storage chamber to a gaseous state. The inhalable state may include an aerosol formed by condensing at least a portion of the liquid vaporizable material from a gaseous state. The cartridge body may include a monolithic hollow structure having a first, open end and a second end opposite the first end. A manifold may be insertable into the first end of the monolithic hollow structure.

In another related aspect, a cartridge reservoir suitable for use with a vaporizer is provided. In one embodiment, the reservoir comprises a storage chamber (e.g., a reservoir) for storing vaporizable material, and an overflow volume that is separate from the storage chamber and communicates with the storage chamber through an outlet that leads to a passage in the overflow volume.

The passage in the overflow volume may lead to a port connected to the ambient air.

The storage chamber or reservoir may also include a first wick feed (wick feeder) and, optionally, a second wick feed, implemented respectively in the form of a first cavity and a second cavity extending through a manifold located within the cartridge. The manifold may include one or more support structures that form a passageway in the overflow volume. The first and second cavities may regulate the flow of vaporized material toward a wick housing configured to receive a wick element.

A wick element located in the wick housing or wick element housing may be configured to absorb vaporized material passing through the first and second wick feeds such that, upon thermal interaction with the atomizer, the vaporized material absorbed by the wick element is converted to at least one of vapor or aerosol and flows through an outlet tunnel structure formed through the manifold and the storage chamber to an opening in the mouthpiece. The mouthpiece may be formed adjacent the storage chamber.

The manifold may have a first end and a second end. The first end may be connected to an opening in the mouthpiece, and the second end opposite the first end may be configured to receive a wick or wick element. The wick body according to some embodiments may include a set of teeth extending outwardly from the second end to at least partially receive the wick element, and one or more compression ribs located near the first or second wick feed and extending from the second end of the manifold to compress the wick element.

In yet another related aspect, a vent may be provided to maintain a pressure equilibrium condition in the cartridge storage chamber and to prevent the pressure in the storage chamber from increasing to a point that would cause the wick housing to flood with vaporized material. The pressure equilibrium condition may be maintained by installing a liquid seal in the outlet located at the point where the storage chamber communicates with a passage in the overflow volume in the cartridge. The liquid seal is installed and maintained in the outlet by maintaining sufficient capillary pressure to form a meniscus of vaporized material in the portion of the outlet leading to the passage in the overflow volume.

The capillary pressure for the meniscus of the vaporized material can be controlled, for example, by venting structures that form a primary channel and a secondary channel that effectively form a fluid valve to control at least a cutoff point in one of the primary channel or the secondary channel. Depending on the implementation, the primary channel and the secondary channel can have a conical geometry, such that as the meniscus continues to descend, the capillary action of the primary channel decreases at a faster rate than the capillary action of the secondary channel.

The gradual reduction of capillary action in the primary and secondary channels reduces the partial vacuum in the free (unfilled) space maintained in the storage chamber.

In yet another related aspect, the primary channel outlet pressure drops below the secondary channel outlet pressure as a result of the gradual reduction in capillary action of the primary and secondary channels relative to each other. The meniscus in the primary channel continues to descend as the primary channel outlet pressure changes, while the meniscus in the secondary channel remains static. The outlet pressure, which causes the primary channel to recede (wet) contact angle, can drop below the flooding pressure, which causes the secondary channel to advance, causing the primary and secondary channels to fill with evaporated material.

Accordingly, in response to an elevated pressure condition within the storage chamber, the vaporized material flows into the collector channel (i.e., the overflow volume) through the outlet, the outlet being configured to maintain a liquid seal at the cutoff point, preferably at all times. In some embodiments, the outlet is configured to facilitate the creation of a liquid seal in the opening from which the vaporized material flows between the storage chamber of the reservoir and the collector channel in the overflow volume.

In yet another related aspect, one or more wick feed channels may be implemented to direct the flow of vaporized material toward the wick. The first wick feed channel may be formed through a manifold located in the overflow volume and independently of the primary and secondary control valve channels mentioned above. The manifold may include a support structure that forms the first or additional wick feed channels. The wick may be positioned within the wick housing such that the wick is configured to absorb vaporized material passing through the first channel. Depending on the implementation, the first channel may have a cross-shaped cross-section or may have a partial dividing wall. The shape of the first channel may provide one or more continuous subchannels and one or more primary subchannels that have a larger diameter than the continuous subchannels.

Depending on the implementation, when the primary subchannel or continuous subchannel is restricted or blocked (e.g., due to the formation of an air bubble), the vaporized material may flow through an alternate subchannel or primary channel. In the case of a cross-shaped wick feed, the primary subchannel may flow through the center of the cross-shaped wick feed. When the primary subchannel is restricted due to the formation of a gas bubble in a portion of the primary subchannel, the vaporized material flows through at least one of the continuous subchannels.

In some embodiments, the manifold may have a first end and a second end, the first end facing the storage chamber and the second end facing away from the storage chamber and configured to include a wick housing. The second wick feed may be implemented in the form of a second channel to allow vaporizable material stored in the storage chamber to flow toward the wick at the same time as vaporizable material flows through the first wick feed. The second wick feed may have a cruciform cross-section.

In one or more aspects, a cartridge reservoir for use with a vaporizer may include a storage chamber configured to contain the vaporizable material. The reservoir may be in operative communication with a sprayer configured to convert the vaporizable material from a liquid phase to a vapor or aerosol phase for inhalation by a user of the vaporizer. The cartridge may also include an overflow volume for retaining at least a portion of the vaporizable material, for example, when one or more factors cause the vaporizable material in the reservoir chamber to move into an overflow volume in the cartridge.

One or more factors may include subjecting the cartridge to a pressure state that is different from a previous external pressure state (e.g., when transitioning from a first pressure state to a second pressure state). In some aspects, the overflow volume may include a passageway (channel) that communicates with an air control opening or port that leads out of the cartridge (i.e., to ambient air). The channel in the overflow volume may also communicate with a reservoir chamber such that the channel may act as an air outlet to equalize pressure in the reservoir chamber. In response to a negative pressure event in the cartridge environment, the vaporized material may be drawn from the reservoir chamber into the atomizer and converted to a vapor or aerosol phase, reducing the volume of vaporized material remaining in the reservoir storage chamber.

The storage chamber may be connected to the overflow volume by one or more openings between the storage chamber and the overflow volume, for example, such that one or more openings lead to one or more channels through the overflow volume. The flow of vaporized material into the channel through the opening may be controlled by the capillary properties of a liquid outlet opening leading to one or more channels, or by the capillary properties of the channels themselves. In addition, the flow of vaporized material into one or more channels may be reversible, allowing vaporized material to move from the overflow volume back into the reservoir chamber.

In at least one embodiment, the flow of vaporized material may be reversed in response to a change in pressure state (e.g., when a second pressure state in the cartridge returns back to a first pressure state). The second pressure state may be associated with a negative pressure event. The negative pressure state may result from a drop in ambient pressure relative to the pressure of one or more volumes of air contained in the reservoir chamber or other portion of the cartridge. Alternatively, the negative pressure event may result from compression of the interior volume of the cartridge due to mechanical pressure on one or more exterior surfaces of the cartridge.

The heating element may include a heating section and at least two legs. The heating section may include at least two prongs that are spaced apart from each other. The heating section may be configured to define an interior volume configured to accommodate a wick element such that the heating section attaches at least a portion of the wick element to the heating element. The heating section may be configured to contact at least two separate surfaces of the wick element. The at least two legs may be associated with the at least two prongs and spaced apart from the heating section. The at least two legs may be configured to be electrically connected to a power source. Power is configured to be supplied to the heating section from the power source to generate heat, thereby vaporizing vaporizable material stored in the wick element.

In some embodiments, the at least two legs include four legs. In some embodiments, the heating portion is configured to contact at least three separate surfaces of the wick element.

In some embodiments, the at least two prongs include a first prong side portion, a second prong side portion opposite the first prong side portion, and a platform (base) prong portion connecting the first prong side portion to the second prong side portion. The platform portion of the prongs may be disposed approximately perpendicular to the region of the first prong side portion and the second prong side portion. The first prong side portion, the second prong side portion, and the platform portion of the prongs define an internal volume in which the wick element is disposed. In some embodiments, the at least two legs are spaced apart from the heating region by a bridge.

In some embodiments, each of the at least two legs includes a cartridge contact located at the end of each of the at least two legs. The cartridge contact may be electrically connected to a power source. The cartridge contact may be bent at an angle and extend away from the heating area.

In some embodiments, the at least two teeth include a first pair of teeth and a second pair of teeth. In some embodiments, the teeth of the first pair of teeth are evenly spaced apart from each other. In some embodiments, the teeth of the first pair of teeth are spaced apart from each other by a width. In some embodiments, the width at the inner region of the heating element adjacent to the platform portion of the teeth is greater than the width at the outer region of the heating element adjacent to the outer edge of the first side portion of the teeth opposite the inner region.

In some implementations, the evaporator is configured to measure the resistance of the heating element in each of the four legs to control the temperature of the heating element. In some implementations, the heating element includes a heat shield configured to isolate the heating area from the evaporator body.

In some implementations, the vaporizer further includes a heat shield configured to surround at least a portion of the heating element and isolate the heating area from the body of the wick housing configured to surround at least a portion of the wick element and the heating element.

In some embodiments, the heating section is sandwiched between the heating section and at least two legs to isolate the heating section from the at least two legs. In some embodiments, the heating section further includes at least one lobe extending from the side of the at least two prongs to facilitate easier insertion of the wick element into the interior volume of the heating section. In some embodiments, the at least one lobe extends from the interior volume at an angle.

In some embodiments, at least two legs include a capillary element (feature). The capillary element can cause a sharp change in capillary pressure, thereby preventing the vaporized material from flowing out of the capillary element. In some embodiments, the capillary element includes one or more bends in at least two legs. In some embodiments, at least two legs extend at an angle to the interior volume of the heating area, with the at least two bent legs defining the capillary element.

In some embodiments, the vaporizer includes a reservoir containing a vaporizable material, a wick element in fluid communication with the reservoir, and a heating element. The heating element includes a heating section and at least two legs. The heating section may include at least two prongs that are spaced apart from each other. The heating section may be formed to define an internal volume configured to accommodate the wick element such that the heating section attaches at least a portion of the wick element to the heating element. The heating section may be configured to contact at least two separate surfaces of the wick element. The at least two legs may be associated with the at least two prongs and spaced apart from the heating section. The at least two legs may be configured to electrically connect to a power source. Power is configured to be supplied to the heating section from a power source to generate heat, thereby vaporizing the vaporizable material stored in the wick element.

A method of forming a spray assembly for a vaporizer may include securing a wick element within an interior volume of a heating element. The heating element may include a heating section comprising at least two spaced apart prongs and at least two legs spaced apart from the heating section. The legs may be configured to electrically connect to a power source of the vaporizer. The heating section is configured to contact at least two surfaces of the wick element. The method may also include connecting the heating element to a wick housing configured to surround at least a portion of the wick element and the heating element. Securing may also include sliding the wick element into the interior volume of the heating element.

In some embodiments, the vaporizer includes a heating section that includes one or more heater tracks integrally formed and spaced apart from each other, the one or more heater tracks being configured to contact at least a portion of a wick element of the vaporizer, a connection section configured to receive power from a power source and direct power to the heating section, and a coating (metallization) layer having a coating material that is different from the material of the heating section. The coating layer may be configured to reduce contact resistance between the heating element and the power source, thereby localizing heating of the heating element by the heating section.

In some aspects of the claimed subject matter, the problems associated with condensation buildup along one or more internal channels and outlets (e.g., along a mouthpiece) of some vaporizers can be addressed by incorporating one or more of the features described herein or comparable/equivalent approaches, as will be apparent to one skilled in the art. Aspects of the claimed subject matter relate to systems and methods for collecting condensation of vaporized material in a vaporizer.

In some embodiments, one or more of the following features may be optionally included in any possible combination.

Aspects of the claimed subject matter relate to a cartridge for a vaporizer device. The cartridge may include a reservoir that includes a reservoir chamber defined by a reservoir barrier.

The reservoir may be configured to contain a vaporizable material in a reservoir chamber. The cartridge may include a vaporization chamber communicating with the reservoir and may include a wick element configured to draw the vaporizable material from the reservoir chamber into the vaporization chamber for vaporization by a heating element. The cartridge may include an air flow channel that passes through the vaporization chamber. The cartridge may include at least one capillary channel adjacent to the air flow channel. Each capillary channel of the at least one capillary channel may be configured to receive a fluid medium and direct the fluid medium from a first location to a second location by capillary action.

In one aspect consistent with the present disclosure, each capillary channel of at least one capillary channel may be tapered in size. The tapering in size may result in increased capillary action through each capillary channel of at least one capillary channel.

Each capillary channel of at least one capillary channel may be formed by a groove (groove) formed between a pair of walls. At least one capillary channel may be in fluid communication with the wick. The first location may be adjacent to the end of the airflow channel and the mouthpiece. At least one capillary channel may collect fluid condensate.

In a related aspect, the vaporizer may include a vaporizer housing including a heating element configured to heat the vaporized material. The vaporizer may include a cartridge configured to be removably connected to the vaporizer housing. The cartridge may include a reservoir including a reservoir chamber defined by a reservoir barrier.

The reservoir may be configured to contain a vaporizable material in a reservoir chamber. The cartridge may include a vaporization chamber communicating with the reservoir and may include a wick element configured to draw the vaporizable material from the reservoir chamber into the vaporization chamber for vaporization by a heating element. The cartridge may include an air flow channel that passes through the vaporization chamber. The cartridge may include at least one capillary channel adjacent to the air flow channel. Each capillary channel of the at least one capillary channel may be configured to receive a fluid medium and direct the fluid medium from a first location to a second location by capillary action.

Each capillary channel of at least one capillary channel may be tapered in size.

The reduction in size may result in increased capillary action through each capillary channel of at least one capillary channel. Each capillary channel of at least one capillary channel may be formed by a groove formed between a pair of walls. At least one capillary channel may be in fluid communication with the wick. The first location may be adjacent to the end of the airflow channel and the mouthpiece. At least one capillary channel may collect fluid condensate.

In a related aspect, the method of the evaporator cartridge may include collecting condensate in a first capillary channel from at least one capillary channel of the cartridge.

Each of the at least one capillary channel may be configured to receive a fluid medium and direct the fluid medium from a first location to a second location by capillary action. The cartridge may include a reservoir that includes a reservoir chamber defined by a reservoir barrier. The reservoir may be configured to contain a vaporizable material in the reservoir chamber. The cartridge may include an evaporation chamber communicating with the reservoir and may include a wick element configured to draw the vaporizable material from the reservoir chamber into the evaporation chamber for evaporation by a heating element. The cartridge may include an airflow channel that may extend through the evaporation chamber. At least one capillary channel may be adjacent to the airflow channel. The method may include directing the collected condensate into the evaporation chamber and along the first capillary channel.

The method may include evaporating, in an evaporation chamber, the collected condensate. The first capillary channel may be tapered in size. Each capillary channel of the at least one capillary channel may be formed by a groove formed between a pair of walls. The at least one capillary channel may be in fluid communication with the wick. The first location may be adjacent to the end of the airflow channel and the mouthpiece.

Details of one or more embodiments of the subject matter described herein are set forth in the accompanying drawings and in the description below. Other features and advantages of the present invention will be apparent from the description and drawings, as well as from the claims. However, the disclosed subject matter is not limited to any particular embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate certain aspects of the claimed subject matter disclosed herein and, together with the description, help to explain certain of the principles associated with the disclosed embodiments, as set forth below.

Fig. 1 illustrates a block diagram of an exemplary evaporation device, according to one or more implementations;

Fig. 2A illustrates a planar view of an exemplary vaporizer housing and insertable vaporizer cartridge, according to one or more implementations;

Fig. 28 shows a perspective view of the evaporation device according to Fig. 2A, according to one or more implementations;

Fig. 2C shows a perspective view of the cartridge of Fig. 2A, according to one or more implementations;

Fig. 20 shows another perspective view of the cartridge of Fig. 2C, according to one or more implementations;

Fig. 2E illustrates a schematic of a reservoir system configured for an evaporator cartridge and/or an evaporator device to improve airflow in the evaporator device, according to one or more implementations;

Fig. 2E illustrates a schematic of a reservoir system configured for an evaporator cartridge or vaporizer to improve airflow in the vaporizer, according to another implementation;

FIGS. 3A and 3B illustrate exemplary planar cross-sectional views of a cartridge having a storage chamber and an overflow volume, according to one or more implementations;

Fig. 4 illustrates an exploded perspective view of an exemplary implementation of the cartridge of Figs. 3A and 3B, according to one or more embodiments;

Fig. 5 illustrates a planar side view in cross-section of a selected divided portion of the cartridge, according to one or more implementations;

Fig. 1A illustrates a top cross-sectional view of an exemplary cartridge structure, according to one or more implementations;

Fig. 6B illustrates a side perspective view of an exemplary cartridge according to Fig. 6A, according to one or more implementations;

Fig. 7A-7O illustrate exemplary embodiments for a cartridge connection port having a covered or covering structure, in accordance with one or more implementations;

Fig. 8 illustrates a planar top view of a cartridge with an exemplary pattern or logo, according to one or more implementations;

Fig. 9A and 9B illustrate a perspective view and a planar cross-sectional view of a divided portion of an exemplary cartridge, according to one or more implementations;

Fig. 10A and 108 illustrate perspective views in closed and exploded form of an exemplary implementation of a cartridge with a separable structure for accommodating a collector mechanism, according to one or more implementations;

Fig. 10C-10E illustrate front and side perspective views of exemplary structural components of a flow control manifold cartridge having one or more flow channels, according to one or more implementations;

Fig. 11A illustrates a planar side view of an exemplary single-channel manifold structure with a single outlet, according to one or more implementations;

Fig. 118 illustrates a planar side view of an exemplary cartridge with a translucent body structure containing an exemplary manifold, such as shown in Fig. 11A, in accordance with one or more implementations;

Fig. 110-116 illustrate a perspective view and a planar side view of exemplary manifold structures with flow control constrictors incorporated into flow channels, according to one or more implementations;

Fig. 11E and 110 illustrate front and side views of an exemplary manifold structure with flow control constrictors integrated into the flow channels of the manifold, according to one or more implementations;

Fig. 1H illustrates a close-up perspective view of an exemplary manifold structure with one or more outlet openings that can control fluid flow between a storage chamber and an overflow volume in a cartridge, according to one or more implementations;

Fig. 111-41K illustrate perspective views of an exemplary flow-controlled manifold structure, according to one or more implementations;

Fig. 11I-11M illustrate planar front views and enlarged views of an exemplary flow control mechanism in a manifold structure, according to one implementation;

Fig. 110-11X illustrate snapshots when the flow of evaporated material collected in the exemplary collector according to Fig. 111-11M is controlled to ensure proper ventilation as the meniscus of evaporated material stored in the overflow volume continues to fall, according to one implementation;

Fig. 12A and 12B illustrate examples of multi-channel manifold structures with a single outlet, according to one or more implementations;

Fig. 13 illustrates an exemplary multi-channel manifold structure with two outlets, according to one or more implementations;

Fig. 14A and 14B illustrate perspective and cross-sectional views of an exemplary manifold structure for a dual wick cartridge, according to one or more implementations;

Fig. 15A-15C illustrate additional perspective and cross-sectional views of an exemplary manifold structure for a dual wick feed structure, according to one or more implementations;

Fig. 16A-16C illustrate a planar side view in cross-section of an exemplary cartridge, a planar side view of an exemplary wick element disposed within a collector structure, and a perspective view of an exemplary cartridge with a collector structure, respectively, in accordance with one or more implementations;

Fig. 17A and 17B illustrate a perspective view of a first side of a cartridge and a cross-sectional view of a second side of a cartridge having a wick element that projects into a storage chamber, according to one or more implementations;

Fig. 18A-180 illustrate an example of a heating element and an air flow channel in a vaporizer cartridge, according to one or more implementations;

Fig. 19A-19C illustrate an example of a heating element and an air flow channel in a vaporizer cartridge, according to one or more implementations;

Fig. 20A-20C illustrate an example of a heating element and an airflow channel in a vaporizer cartridge, according to one or more implementations;

Fig. 21A and 21B illustrate side views of exemplary collector structures that include one or more ribs or sealing flange profiles that support some manufacturing methods for attaching the collector to a storage chamber in a cartridge;

Fig. 22A-22B illustrate an example of a heating element, according to one or more implementations;

Fig. 23 illustrates an example of a portion of a wick body, according to one or more implementations;

Fig. 24 illustrates an example of an identification chip, according to one or more implementations;

Fig. 25 illustrates perspective, front, side and exploded views of an exemplary embodiment of a cartridge;

Fig. 26A illustrates perspective, front, side, bottom and top views of an exemplary embodiment of a manifold with an M-shaped outlet;

Fig. 26B and 26C illustrate perspective and cross-sectional views of exemplary manifold structures from various viewing angles, focusing on structural details for securing the placement of the wick element and the wick housing relative to the atomizer toward one end of the cartridge, according to one or more implementations;

Fig. 260-26E illustrate planar top views of exemplary wick delivery mechanisms formed or structured through a manifold, according to one or more implementations;

Fig. 27A and 27B illustrate front views of exemplary flow control mechanisms in a manifold structure, according to one or more implementations;

Fig. 28 illustrates a front view of an exemplary cartridge containing an exemplary manifold structure;

Fig. 29A-29 illustrate perspective, front and side views, respectively, of an exemplary embodiment of a cartridge;

Fig. 30A-30E illustrate perspective views of an exemplary cartridge with different fill levels, in accordance with one or more embodiments;

Fig. 31A-31C illustrate front views of an exemplary cartridge filled and assembled according to one embodiment;

Fig. 32A-32C illustrate front, top and bottom views of an exemplary cartridge air channel;

Fig. 33A and 33B illustrate front and top views of an exemplary cartridge with air flow, liquid supply channels and a condensate collection system;

Fig. 34A and 34B8 illustrate front and side views of an exemplary cartridge housing with an external airflow channel;

Fig. 35 and 36 illustrate a perspective view of a portion of an exemplary cartridge with a collector structure having an air gap near the bottom edge of the collector structure;

Fig. 37A-37C illustrate top views of various exemplary forms of wick delivery for a cartridge;

Fig. 370 and 37E illustrate exemplary embodiments of a collector with the implementation of a dual wick feed;

Fig. 38 illustrates an enlarged view of a wick feed end positioned near the wick and configured to at least partially receive the wick;

Fig. 39 illustrates a perspective view of an example of a collector structure having a square-shaped wick feed in combination with an air gap at one end of the overflow channel;

Fig. 40A illustrates a view behind the collector structure, for example, with four separate ejection locations;

Fig. 408 illustrates a side view of the collector structure, in particular showing an end portion in the form of a wick feed clamp, which, for example, can firmly hold the wick in the wick feed channel;

Fig. 40C illustrates a top view of a manifold structure with wick feed channels for receiving vaporized material from the cartridge storage chamber and directing the vaporized material to a wick held in position at the end of the wick feed channels by the protruding ends of the wick feed channels;

Fig. 400 illustrates a planar front view of the collector structures. As shown, an air gap cavity may be formed in the bottom of the collector structure at the end of the bottom edge of the collector structure, where the collector overflow channel leads to an air control outlet that communicates with ambient air;

Fig. 40E illustrates a bottom view of a manifold structure with wick feed channels terminating in a clamp-shaped protrusion configured to hold the wick in position at each end;

Fig. ATA and 41B illustrate planar top and side views of a collector structure with two end portions in the form of a clamp of two respective wick feeds;

Fig. 42A and 42B illustrate various perspective, top, and side views of an exemplary manifold with various structural implementations;

Fig. 43A illustrates various perspective, top, and side views of an exemplary wick housing, in accordance with one or more embodiments;

Fig. 43B illustrates the collector and wick housing components of an exemplary cartridge in which a protruding petal is formed in the structure of the wick housing for insertion into a receiving recess or cavity in a corresponding lower portion of the collector;

Fig. 44A illustrates an exploded perspective view of an embodiment of a cartridge consistent with embodiments of the present invention;

Fig. 448 illustrates a top perspective view of an embodiment of a cartridge consistent with implementations of the claimed subject matter;

Fig. 44C illustrates a bottom perspective view of an embodiment of a cartridge consistent with implementations of the claimed subject matter;

Fig. 45 shows a schematic view of a heating element for use in an evaporation device consistent with embodiments of the claimed subject matter;

Fig. 46 shows a schematic view of a heating element for use in an evaporation device consistent with embodiments of the claimed subject matter;

Fig. 47 shows a schematic view of a heating element for use in an evaporation device consistent with embodiments of the claimed subject matter;

Fig. 48 shows a schematic view of a heating element located in a vaporizer cartridge for use in a vaporizer device consistent with embodiments of the claimed subject matter;

Fig. 49 shows a heating element and a wick element consistent with embodiments of the claimed subject matter;

Fig. 50 shows a heating element and a wick element consistent with embodiments of the claimed subject matter;

Fig. 51 shows a heating element and a wick element located in a vaporizer cartridge consistent with embodiments of the claimed subject matter;

Fig. 52 shows a heating element and a wick element located in a vaporizer cartridge consistent with embodiments of the claimed subject matter;

Fig. 53 shows a heating element located in a vaporizer cartridge consistent with embodiments of the claimed subject matter;

Fig. 54 shows the heating element in an unbent position, consistent with embodiments of the claimed subject matter;

Fig. 55 shows the heating element in a bent position, consistent with embodiments of the claimed subject matter;

Fig. 56 shows the heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 57 shows the heating element in an unbent position, consistent with embodiments of the claimed subject matter;

Fig. 58 shows the heating element in a partially bent position, consistent with embodiments of the claimed subject matter;

Fig. 59 shows the heating element in a partially bent position, consistent with embodiments of the claimed subject matter;

Fig. 60 shows the heating element in a partially bent position, consistent with embodiments of the claimed subject matter;

Fig. 61 shows the heating element in a partially bent position, consistent with embodiments of the claimed subject matter;

Fig. 62 shows the heating element in a partially bent position, consistent with embodiments of the claimed subject matter;

Fig. 63 shows the heating element in an unbent position, consistent with embodiments of the claimed subject matter;

Fig. 64 shows the heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 65 shows the heating element in a partially bent position, consistent with embodiments of the claimed subject matter;

Fig. 6bb shows the heating element in a partially bent position, consistent with embodiments of the claimed subject matter;

Fig. 6b/ shows the heating element in a partially bent position, consistent with embodiments of the claimed subject matter;

Fig. 68 shows a heating element in a partially bent position and a wick element consistent with embodiments of the claimed subject matter;

Fig. 69 shows a heating element in a bent position and a wick element consistent with embodiments of the claimed subject matter;

Fig. 70 shows a heating element in a bent position and a wick element consistent with embodiments of the claimed subject matter;

Fig. 71 shows the heating element in an unbent position, consistent with embodiments of the claimed subject matter;

Fig. 72 shows the heating element in an unbent position, consistent with embodiments of the claimed subject matter;

Fig. 73 shows the heating element in an unbent position, consistent with embodiments of the claimed subject matter;

Fig. 74 shows the heating element in an unbent position, consistent with embodiments of the claimed subject matter;

Fig. 75 shows a heating element connected to a portion of a vaporizer cartridge consistent with embodiments of the claimed subject matter;

Fig. 76 shows a heating element and a wick element located in a vaporizer cartridge consistent with embodiments of the claimed subject matter;

Fig. 77 shows the heating element in a partially bent position, consistent with embodiments of the claimed subject matter;

Fig. 78 shows a heating element in a partially bent position and a wick element consistent with embodiments of the claimed subject matter;

Fig. 79 shows a heating element having a coated portion in an unbent position consistent with embodiments of the claimed subject matter;

Fig. 80 shows a heating element having a coated portion in a bent position consistent with embodiments of the claimed subject matter;

Fig. 81 shows a heating element having a coated portion disposed in an evaporator cartridge consistent with embodiments of the claimed subject matter;

Fig. 82 shows a perspective view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 83 shows a side view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 84 shows a front view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 85 shows a perspective view of a heating element in a bent position and a wick element, which are consistent with implementations of the claimed subject matter;

Fig. 86 shows a heating element located in a vaporizer cartridge consistent with embodiments of the claimed subject matter;

Fig. 87 shows a perspective view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 88 shows a side view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 89 shows a top view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 90 shows a front view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 91 shows a perspective view of a heating element in an unbent position consistent with embodiments of the claimed subject matter;

Fig. 92 shows a top view of a heating element in an unbent position consistent with embodiments of the claimed subject matter;

Fig. 93A shows a perspective view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 93B shows a perspective view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 94 shows a side view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 95 shows a top view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 96 shows a front view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 97A shows a perspective view of a heating element in an unbent position consistent with embodiments of the claimed subject matter;

Fig. 97B shows a perspective view of a heating element in an unbent position consistent with embodiments of the claimed subject matter;

Fig. 98A shows a top view of the heating element in an unbent position consistent with embodiments of the claimed subject matter;

Fig. 988 shows a top view of the heating element in an unbent position consistent with embodiments of the claimed subject matter;

Fig. 99 shows a top perspective view of a sprayer assembly consistent with embodiments of the claimed subject matter;

Fig. 100 shows a bottom perspective view of a sprayer assembly consistent with embodiments of the claimed subject matter;

Fig. 101 shows an exploded perspective view of a sprayer assembly consistent with embodiments of the claimed subject matter;

Fig. 102 shows a perspective view of a heat shield consistent with embodiments of the claimed subject matter;

Fig. VIN shows a cross-sectional side view of a sprayer assembly consistent with embodiments of the claimed subject matter;

Fig. 103 shows another side view in section of a sprayer assembly consistent with embodiments of the claimed subject matter;

Fig. 104 schematically shows a heating element consistent with implementations of the claimed subject matter;

Fig. 105 shows a perspective view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 106 shows a side view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 107 shows a perspective view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 108 shows a side view of a heating element in a bent position consistent with embodiments of the claimed subject matter;

Fig. 109 shows a top view of a substrate material with a heating element consistent with embodiments of the claimed subject matter;

Fig. 110 shows a top view of a heating element in an unbent position consistent with embodiments of the claimed subject matter;

Fig. 111A shows a top perspective view of a sprayer assembly consistent with embodiments of the claimed subject matter;

Fig. 1118 shows an enlarged view of a portion of the wick housing of a spray assembly consistent with embodiments of the claimed subject matter;

Fig. 112 shows a bottom perspective view of a sprayer assembly consistent with embodiments of the claimed subject matter;

Fig. 113 shows an exploded perspective view of a sprayer assembly consistent with embodiments of the claimed subject matter;

Fig. 114A-114C show the process of assembling a sprayer consistent with implementations of the claimed subject matter;

Fig. 115A-115C show a process for assembling a sprayer consistent with embodiments of the claimed subject matter; and

Fig. 116 shows a flow chart illustrating features of a method of forming and implementing a heating element consistent with embodiments of the claimed subject matter.

Fig. 117 illustrates an embodiment of a vaporizer cartridge;

Fig. 118 illustrates an embodiment of a mouthpiece of a vaporizer cartridge and/or vaporizer device;

Fig. 119A illustrates a side cross-sectional view of a condensate recycling system in an evaporator cartridge;

Fig. 198 illustrates a first perspective view of a condensate recycling system according to

Fig. 119A; and

Fig. 119C illustrates a second perspective view of a condensate recycling system according to

Fig. 119A.

Where appropriate, the same or similar reference numerals refer to the same, similar or equivalent structures, features, aspects or elements, according to one or more implementations.

DETAILED DESCRIPTION OF EXEMPLARY IMPLEMENTATION OPTIONS

A vaporizer configured to convert a liquid vaporizable material into a gas phase and/or an aerosol phase (e.g., a suspension of a gas phase and a powder phase material in air that is in relative local equilibrium between the phases) may typically include a reservoir or storage container (also referred to herein as a reservoir, storage chamber, or storage volume) containing a volume of liquid vaporizable material, an atomizer (which may also be referred to as an atomizer assembly), a heating element (e.g., an electrically resistive element through which an electrical current is passed to result in the conversion of the electrical current into thermal energy) that heats the liquid vaporizable material, resulting in the conversion of at least a portion of the liquid vaporizable material into a gas phase, and a wick element (which may be simply referred to as a wick, but which typically refers to an element or combination of elements that exert a capillary action to draw the liquid vaporizable material from the reservoir to where it is heated by the heating element).

The resulting liquid vaporized material in the gas phase may in some cases (depending on a variety of factors) then (and, optionally, almost immediately) begin to at least partially condense to form an aerosol in the air passing through, over, near, around, etc. the atomizer.

As the liquid vaporizable material in the wick element is heated and converted to a gas phase (and then, optionally, to an aerosol), the volume of the liquid vaporizable material in the reservoir is reduced. In the absence of a mechanism for passing air or some other substance into the void space (e.g., the portion of the reservoir volume not occupied by the liquid vaporizable material) created within the reservoir as the volume of the liquid vaporizable material therein is reduced by conversion to a gas/aerosol phase, a reduced pressure condition (e.g., at least a partial vacuum) is created within the reservoir. This reduced pressure condition can adversely affect the effectiveness of the wick element in drawing the vaporizable material from the storage chamber or reservoir into the region near the heating element for vaporization to the gas phase, since the partial vacuum pressure acts in opposition to the capillary pressure created within the wick element.

More specifically, a reduced pressure condition in the tank can result in insufficient wick saturation and ultimately insufficient vaporizable material being delivered to the atomizer for reliable operation of the vaporizer. To counteract the reduced pressure condition, ambient air can be drawn into the tank to equalize the pressure between the interior of the tank and the ambient pressure. Allowing air to backfill the void in the tank created by the evaporated liquid material can occur in some vaporizers by air passing into the tank through the wick element. However, this process can typically require the wick element to be at least partially dry. Since a dry wick element may not be readily available and/or may be undesirable for reliable operation of the vaporizer, another typical approach is to provide an outlet to allow pressure equalization between the ambient conditions and the interior of the tank.

The presence of air in the headspace of the tank, provided by a wick or some other exhaust or venting structure, can create one or more other problems. For example, once the air pressure in the headspace of a tank is equalized (or at least close to equalized) to the ambient pressure, and especially when the headspace filled with air increases in volume relative to the full volume of the tank, the creation of a negative pressure difference (e.g., the air in the headspace is at a higher pressure than the ambient) between the air in the headspace and the ambient conditions can result in the liquid vaporizing material escaping from the tank, e.g., through a vent, through any outlet that is provided, etc. The negative pressure difference between the air inside the tank and the current ambient pressure can be created by one or more of a number of factors, such as heating of the air inside the headspace (e.g., by holding the tank in the hand, moving the evaporator from a cold area to a warmer area, etc.), mechanical forces that can distort the shape and thereby reduce the internal volume of the tank (e.g., compression of part of the evaporator causing distortion of the volume of the tank, etc.), a rapid drop in ambient pressure (e.g., as may occur in an airplane during air travel; when a car or train enters or exits a tunnel; when a window is opened or closed while the vehicle is moving at high speed, etc.), or the like.

Leakage of liquid vaporizable material from the vaporizer reservoir, as described above, is generally undesirable because the leaking liquid vaporizable material may cause undesirable effects (e.g., staining clothing or other objects near the vaporizer), may pass into the vaporizer inhalation channel and thus be consumed by the user, may interfere with the functioning of the vaporizer (e.g., by fouling the pressure sensor, affecting the performance of electrical circuits and/or switches, fouling the loading ports and/or connections between the cartridge and the vaporizer housing, etc.), or the like. Thus, leakage of liquid vaporizable material may interfere with the functionality and cleanliness of the vaporizer.

Examples of vaporizers include, without limitation, electronic vaporizers, electronic nicotine delivery systems (EDS), or devices and systems with the same, similar, or equivalent structural or functional features or capabilities. FIG. 1 shows an exemplary block diagram of an exemplary vaporizer 100. Vaporizer 100 may include a vaporizer housing 110 and a vaporizer cartridge 120 (also referred to simply as the vaporizer cartridge 120). The vaporizer housing 110 may include a power source 112 (e.g., a battery, which may be rechargeable), and a controller 104 (e.g., a programmable logic device, processor, or circuit capable of executing logic code) for controlling the application of heat to the atomizer 141 to cause the vaporizable material (not shown) to be converted from a condensed form (e.g., a solid, liquid, solution, suspension, at least partially unprocessed plant material, etc.) to a gas phase, or more generally, the conversion of the vaporizable material to an inhalable form or precursor to an inhalable form. In this context, the inhalable form may be a gas or an aerosol or some other airborne form. The inhalable form precursor may include a gas phase state of vaporizable material that condenses at least partially to form an aerosol at some point in time (optionally, immediately or nearly immediately or alternatively with some delay or after some cooling) after the gas phase state is formed. The controller 104 may be part of one or more printed circuit boards (PCBs) compatible with some implementations, and may be used to control certain functions of the vaporizer housing 110 in association with one or more sensors 113.

As shown, the evaporator housing 110 may, in some embodiments of the claimed subject matter, include one or more sensors 113, evaporator housing contacts 125, a seal 115, and optionally, a cartridge receiver (socket) 118 configured to receive at least a portion of the evaporator cartridge 120 for connection to the evaporator housing 110 via one or more of a variety of attachment structures. As described below with reference to Figs. 7A-7O, a receiving or receiving socket structure, or some combination thereof, may be used to connect the evaporator cartridge 120 to the evaporator housing 110. For example, in some embodiments of the claimed subject matter, the inner portion of the first end of the cartridge may be received in the cartridge seat 118 of the evaporator housing 110, while the outer portion of the first end of the cartridge at least partially covers some portion of the outer surface of the structure on the evaporator housing 110 that forms the cartridge seat 118. Such an arrangement for connecting the evaporator cartridge 120 to the evaporator housing 110 may provide a convenient, easy-to-use connection method that also provides sufficient mechanical strength of the connection to avoid unwanted separation of the evaporator cartridge 120 and the evaporator housing 110. Such a configuration may also provide desirable resistance to bending of the evaporator formed by the connection of the evaporator cartridge 120 to the evaporator housing 110. With respect to the evaporator housing contacts 125, it should be understood that they may also be referred to as “socket contacts 125,” particularly in implementations in which the corresponding cartridge contacts 124 (discussed below) are located on the portion of the evaporator cartridge 120 that is inserted into a socket or socket-like structure on the evaporator housing 110. However, the terms “evaporator housing contacts 125” and/or “socket contacts 125” are also used herein because aspects of the claimed subject matter are not limited to electrical connection and may be used to provide various advantages in systems other than those in which the electrical connection between the evaporator cartridge 120 and the evaporator housing 110 occurs between contacts within the cartridge socket 118 on the evaporator housing 110 and on the portion of the evaporator cartridge 120 that is inserted into the cartridge socket 118.

In some examples, the vaporizer cartridge 120 may include a reservoir 140 for storing a liquid vaporizable material and a mouthpiece 130 for delivering a dose of an inhalable form of the vaporizable material. The mouthpiece may optionally be a component separate from the structure that forms the reservoir 140, or alternatively, it may be formed from the same part or component that forms at least a portion of one or more walls of the reservoir 140. The liquid vaporizable material within the reservoir 140 may be a carrier solution in which the active or inactive ingredients may be suspended, dissolved, or held in solution, or in the pure liquid form of the vaporizable material itself.

In one implementation, the vaporizer cartridge 120 may include an atomizer 141, which may include a wick or wick element, and a heater (e.g., a heating element). As noted above, the wick element may include any material capable of causing liquid to be drawn up by capillary pressure through the wick to deliver a quantity of liquid vaporizable material to the portion of the atomizer 141 that includes the heating element. The wick and heating element are not shown in FIG. 1, but are disclosed and discussed in more detail below with reference to FIG. 3A, 3B and 4. Briefly, the wick element can be configured to draw liquid vaporizable material from a reservoir 140 configured to contain the liquid vaporizable material, such that the liquid vaporizable material can vaporize (i.e., convert to a gas phase) by heat supplied from the heating element to the wick element, and the liquid vaporizable material is drawn into the wick element. In some implementations, air can be supplied to the reservoir 140 through the wick element or other opening to at least partially equalize the pressure in the reservoir 140 in response to the liquid vaporizable material being removed from the reservoir 140 during vapor and/or aerosol formation.

As shown in Fig. 1, the pressure sensor 113 (and any other sensors) may be mounted on or connected (e.g., electrically, electronically, physically, or via a wireless connection) to the controller 104. The controller 104 may be a printed circuit board assembly or other type of circuit board. For accurate measurement and to ensure the durability of the evaporator 100, it may be useful to provide a resilient seal 115 to separate the airflow passage from other parts of the evaporator 100. The seal 115, which may be a gasket, may be configured to at least partially surround the pressure sensor 113 such that the connections of the pressure sensor 113 to the internal circuitry of the evaporator may be separated from the portion of the pressure sensor exposed to the airflow passage.

The liquid vaporizable material used with the vaporizer 100 may be provided in a vaporizer cartridge 120, which may be refillable when empty or disposable for replacement with a new cartridge containing additional vaporizable material of the same or a different type.

The vaporizer may be a cartridge vaporizer or a reusable vaporizer capable of being used with or without a cartridge. For example, a reusable vaporizer may include a heating chamber (e.g., an oven) configured to contain the vaporizable material directly in the heating chamber, and may also include a cartridge or other replaceable device having a reservoir, volume, or other functional or structural equivalent means for at least partially containing a usable amount of the vaporizable material.

In the example of a vaporizer using a cartridge, the seal 115 may also separate portions of one or more electrical connections between the vaporizer housing 110 and the vaporizer cartridge 120.

Such seal designs 115 in the evaporator 100 may be useful for mitigating potentially damaging effects on evaporator components resulting from interactions with one or more environmental factors, such as condensed water, evaporative material that seeps from the reservoir and/or condenses after evaporation, to reduce air leakage from a dedicated air flow channel in the evaporator, or the like.

Unwanted air, liquid, or other fluid passing through and/or contacting the circuit of the vaporizer 100 can cause various undesirable effects, such as changes in pressure readings and/or can lead to the formation of unwanted material (e.g., moisture, vaporized material, and the like) in parts of the vaporizer 100, where the unwanted material can cause an incorrect pressure signal, degrade the pressure sensor or other electrical or electronic components, and/or reduce the life of the vaporizer. Leaks in the seal 115 can also cause the user to inhale air that has passed over parts of the vaporizer 100 that contain or are made of materials that are not suitable for inhalation.

Vaporizers configured to generate at least a portion of an inhaled dose of non-liquid vaporizable material by heating the non-liquid vaporizable material may also be included within the scope of the disclosed subject matter. For example, instead of or in addition to a liquid vaporizable material, the vaporizer cartridge 120 may include a mass of plant material or other non-liquid material (e.g., a solid form of the vaporizable material itself, such as a "wax") that is processed and shaped to be in direct contact with at least a portion of one or more resistive heating elements (or be heated by the heating element by radiation and/or convection), which may optionally be included in the vaporizer cartridge 120 or in a portion of the vaporizer housing 110. The solid vaporizable material (e.g., a material that includes plant material) may release only a portion of the plant material as vaporizable material (e.g., such that some portion of the plant material remains as waste after the vaporizable material is released for inhalation), or all of the solid material may ultimately be vaporized for inhalation. The liquid vaporizable material may also be completely vaporized or may include a portion of the of liquid material that remains after all the material suitable for inhalation has been consumed.

When configured with a vaporizable material and a heating element in the vaporizer cartridge 120, the vaporizer cartridge 120 may be mechanically and electrically coupled to the vaporizer housing 110, which may include a processor, a power supply 112, and one or more vaporizer housing contacts 125 for connection to corresponding cartridge contacts 124 to complete the circuit with the resistive heating element included in the vaporizer cartridge 120. Various vaporizer configurations may be implemented with one or more of the features described herein.

In some implementations, the vaporizer 100 may include a power source 112 as part of the vaporizer housing 110, while the heating element may be located in a vaporizer cartridge 120 configured to connect to the vaporizer housing 110. As such, the vaporizer 100 may include electrical connectors to complete a circuit that includes the controller 104, the power source 112, and the heating element included in the vaporizer cartridge 120.

In some embodiments of the claimed subject matter, the connecting elements may include at least two cartridge contacts 124 on the bottom surface of the evaporator cartridge 120 and at least two contacts 125 located at the base of the evaporator cartridge socket 100, such that the cartridge contacts 124 and the socket contacts 125 form electrical connections when the evaporator cartridge 120 is inserted into and connected to the cartridge socket 118. In some embodiments of the claimed subject matter, the evaporator housing contacts 125 may be compressible pins (e.g., rodo rip5, pogopin contacts) that are pushed out of the corresponding cartridge contacts 124 when the evaporator cartridge is inserted and secured in the socket 118. Other configurations are also possible. For example, brush contacts may be used that form electrical connections with corresponding contacts on a mating portion of the evaporator cartridge. Such contacts do not require electrical connection to the cartridge contacts on the bottom end of the vaporizer cartridge 120, but instead may be connected by pressing outwardly from one or more side walls of the cartridge housing 118 to the cartridge contacts 124 on the portion of the side of the vaporizer cartridge 120 that is in the housing when the vaporizer cartridge 120 is properly inserted into the cartridge housing 118.

The circuit, complete with electrical connections, can provide electrical current to the resistive heating element and can be further used for additional functions, such as measuring the resistance of the resistive heating element for use in determining or controlling the temperature of the resistive heating element based on the thermal coefficient of resistivity of the resistive heating element, for identifying the evaporator cartridge 120 based on one or more electrical characteristics of the resistive heating element, or other circuitry of the evaporator cartridge 120.

In some examples, at least two cartridge contacts 124 and at least two evaporator housing contacts 125 (e.g., socket contacts in an implementation in which a portion of the evaporator cartridge 120 is inserted into the cartridge socket 118) may be configured to electrically connect in any of at least two orientations. In other words, one or more circuits configured to operate the vaporizer 100 may be completed by inserting (or otherwise connecting) at least a portion of the vaporizer cartridge 120 into the cartridge housing 118 in a first rotational orientation (e.g., about an axis along which the end of the vaporizer cartridge 120 is inserted into the cartridge housing 118 of the vaporizer housing 110) such that a first cartridge contact of at least two cartridge contacts 124 is electrically connected to a first socket contact of at least two socket contacts 125, and a second cartridge contact of at least two cartridge contacts 124 is electrically connected to a second socket contact of at least two socket contacts 125.

Additionally, one or more circuits configured to operate the vaporizer 100 may be completed by inserting (or otherwise connecting) the vaporizer cartridge 120 into the cartridge housing 118 in a second rotational orientation such that a first cartridge contact of at least two cartridge contacts 124 is electrically connected to a second cartridge contact of at least two cartridge contacts 125, and a second cartridge contact of at least two cartridge contacts 124 is electrically connected to a first cartridge contact of at least two cartridge contacts 125. The vaporizer cartridge 120 may be reversibly inserted into the cartridge housing 118 of the vaporizer housing 110, as described in more detail below.

In one example of a coupling structure for connecting the vaporizer cartridge 120 to the vaporizer housing 110, the vaporizer housing 110 may include a retainer (e.g., a recess, a protrusion, etc.) projecting inwardly from an inner surface of the cartridge seat 118. One or more outer surfaces of the vaporizer cartridge 120 may include corresponding recesses (not shown in FIG. 1) that may fit snugly or otherwise snap onto such retainers when the end of the vaporizer cartridge 120 is inserted into the cartridge seat 118 on the vaporizer housing 110.

The evaporator cartridge 120 and the evaporator housing 110 may be coupled, for example, by inserting an end of the evaporator cartridge 120 into a cartridge slot 118 of the evaporator housing 110. A retainer in the evaporator housing 110 may be received in recesses in the evaporator housing 120 and/or otherwise retained in recesses in the evaporator cartridge 120 to hold the evaporator cartridge 120 in place when assembled. Such a latch-recess assembly may provide sufficient support to hold the vaporizer cartridge 120 in place to provide sufficient contact between the at least two cartridge contacts 124 and the at least two cartridge contacts 125, while still allowing the vaporizer cartridge 120 to be released from the vaporizer housing 110 when a user applies reasonable force to the vaporizer cartridge 120 to disengage the vaporizer cartridge 120 from the cartridge housing 118.

In addition to the above discussion of electrical connections between the evaporator cartridge 120 and the evaporator housing 110 being reversible such that at least two rotational orientations of the evaporator cartridge 120 within the cartridge housing 118 are possible, in some implementations of the evaporator 100, the shape of the evaporator cartridge 120, or at least the shape of the end of the evaporator cartridge 120 that is configured to be inserted into the cartridge housing 118, may have at least two-fold rotational symmetry.

In other words, the evaporator cartridge 120, or at least the mechanical mating elements and electrical contacts on the insertable end of the evaporator cartridge 120, may be symmetrical when rotated 180° about the axis along which the evaporator cartridge 120 is inserted into the cartridge housing 118. In such a configuration, the evaporator circuit 100 may maintain identical operation regardless of which symmetrical orientation the evaporator cartridge 120 is in. It should be understood that the entire insertable end of the cartridge need not be symmetrical in all embodiments of the claimed subject matter. For example, an evaporator cartridge 120 that has rotationally symmetrical mechanical elements for interacting with corresponding elements inside or outside the cartridge housing 118 that is shaped and sized to be inserted into the cartridge housing 118 of the evaporator housing 110 and that also has rotationally symmetrical cartridge electrical contacts 124 and an internal circuit (which may optionally be in either or both of the evaporator cartridge 120 and the evaporator housing 110) that is compatible with the reversal of electrical contacts is consistent with this disclosure, even if the overall shape and appearance of the insertable end of the evaporator cartridge 120 is not axisymmetric.

As noted above, in some exemplary embodiments, the vaporizer cartridge 120, or at least the end of the vaporizer cartridge 120, is configured to be inserted into the cartridge housing 118 and may have a non-circular cross-section transverse to the axis along which the vaporizer cartridge 120 is inserted into the cartridge housing 118. For example, the non-circular cross-section may be approximately rectangular, approximately elliptical (e.g., approximately oval-shaped), non-rectangular but with two sets of parallel or approximately parallel opposite sides (e.g., parallelogram-shaped), or other shapes having at least two-order rotational symmetry. In this context, "approximately having the shape" indicates that there is an obvious basic similarity to the described shape, but the sides of the shape in question need not be completely linear, and the vertices need not be completely sharp. In the description of any non-circular cross-section mentioned herein, some degree of rounding of both edges or vertices of the cross-sectional shape is possible.

The at least two cartridge contacts 124 and the at least two socket contacts 125 may have various shapes. For example, one or both sets of contacts may include conductive pins, tabs, posts, pin or post receiving holes, or the like. Some types of contacts may include springs or other biasing elements to provide better physical and electrical contact between the contacts on the vaporizer cartridge and the vaporizer housing. The electrical contacts may be gold plated and/or may include other materials.

Vaporizer 100 consistent with embodiments of the disclosed subject matter may be configured to communicate (e.g., wirelessly or via a wired connection) with one or more computing devices associated with vaporizer 100. To this end, controller 104 may include communication hardware 105. Controller 104 may also include memory 108. The computing device may be a component of a vaporizer system that also includes vaporizer 100, and may include stand-alone communication equipment that may establish a wireless communication channel with communication hardware 105 of vaporizer 100.

A computing device used as part of the vaporizer system may include a general-purpose computing device (e.g., a smartphone, tablet, personal computer, some other portable device such as a smartwatch, or the like) that executes software to create a user interface to enable a user of the device to interact with the vaporizer 100. In other implementations, a device used as part of the vaporizer system may be a specialized piece of hardware, such as a remote control or other wireless or wired device, having one or more physical or software interface controls (e.g., configured on a screen or other display device and selected through user interaction with a touch screen or some other input device such as a mouse, pointer, trackball, cursor buttons, or the like). The vaporizer 100 may also include one or more output elements or devices 117 for providing information to the user.

A computing device that is part of a vaporizer system as defined above may be used for any one or more functions such as dosage control (e.g., dose control, dose setting, dose limitation, user tracking, etc.), session control (e.g., session control, session establishment, session limitation, user tracking, etc.), nicotine delivery control (e.g., switching between nicotine and non-nicotine vaporizable material, adjusting the amount of nicotine delivered, etc.), obtaining location information (e.g., location of other users, location of retailers/commercial locations, vaping locations, relative or absolute location of the vaporizer itself, etc.), vaporizer personalization (e.g., naming the vaporizer, locking/password protecting the vaporizer, adjusting one or more parental controls, associating the vaporizer with a group user, registration of the vaporizer with the manufacturer or warranty service organization, etc.), participation in social activities (e.g., social networking, interaction with one or more groups, etc.) with other users, or the like. The terms "session", "session", "vaporizer session" or "vaporization session" may be used to refer to a period of time related to the use of the vaporizer. A period may include a period of time, number of doses, amount of vaporized material, and/or the like.

In an example where the computing device provides signals relating to activation of the resistive heating element, or in other examples of the computing device communicating with the vaporizer to implement various control or other functions, the computing device executes one or more computer instructions to provide a user interface and basic data processing. In one example, detection by the computing device of user interaction with one or more user interface elements may cause the computing device to signal the vaporizer 100 to activate the heating element to full operating temperature to generate an inhalable dose of vapor/aerosol. Other functions of the vaporizer 100 may be controlled by user interaction with a user interface on the computing device in communication with the vaporizer 100.

In some embodiments, the vaporizer cartridge 120 used in the vaporizer housing 110 may include an atomizer 141 having a wick element and a heating element.

Alternatively, one or both of the wick element and the heating element may be part of the evaporator housing 110. In embodiments in which any portion of the atomizer 141 (e.g., the heating element or the wick element) is part of the evaporator housing 110, the evaporator 100 may be configured to deliver liquid vaporizable material from the reservoir 140 in the evaporator cartridge to the wick and other parts of the atomizer, such as, for example, the wick element, the heating element, etc. Capillary structures that include the wick element will be understood by one skilled in the art as representing one possible embodiment used with the other features described.

Activation of the heating element may be triggered by automatic detection of a puff based on one or more signals generated by one or more sensors 113, such as, for example, a pressure sensor or sensors positioned to detect pressure along the airflow path relative to ambient pressure (or may measure changes in absolute pressure), one or more motion sensors of the vaporizer 100, one or more flow sensors of the vaporizer 100, a capacitive lip sensor of the vaporizer 100; in response to detecting user interaction with one or more input devices 116 (e.g., buttons or other tactile controls of the vaporizer 100), receiving signals from a computing device in communication with the vaporizer 100, or through other approaches to determine that a puff is occurring or should occur.

The heating element may be or may include one or more of a conductive heater, a radiant heater, and a convective heater. One type of heating element may be a resistive heating element, which may be made of or may at least include a material (e.g., a metal or alloy, such as a chromium-nickel alloy or a non-metallic resistor) configured to dissipate electrical power in the form of heat when an electrical current is passed through one or more resistive segments of the heating element.

In some implementations, the atomizer 141 may include a heating element that includes a resistive coil or other heating element wrapped around, located within, integrated into the bulk mold, pressed into thermal contact, located adjacent thereto, configured to heat air to cause convective heating, or otherwise adapted to provide heat to the wick element to cause vaporization of liquid vaporizable material drawn by the wick element from the reservoir 140 for subsequent inhalation by the user in a gaseous and/or condensed (e.g., aerosolized particles or droplets) phase.

Other configurations of the wick element, heating element, or atomizer assembly may also be used, as further discussed below.

After the vaporized material is converted to a gas phase, and depending on the type of vaporizer, the physical and chemical properties of the vaporized material, or other factors, at least a portion of the vaporized material in the gas phase may condense to form particulate material in at least partial local equilibrium with the gas phase as part of an aerosol, which may form part or all of the inhaled dose provided by the vaporizer 100 for a given puff or draw on the vaporizer.

It should be understood that the interaction between the gas and condensed phases in an aerosol generated by a vaporizer can be complex and dynamic, as factors such as ambient temperature, relative humidity, chemistry (e.g., acid-base interactions, protonation or lack thereof in the compound released from the vaporized material by heating, etc.), flow conditions in the air flow channels (both within the vaporizer and in the human or animal respiratory tract), mixing of the vaporized gas phase or aerosol phase material with other air flows, etc. can affect one or more of the physical and/or chemical parameters of the aerosol. In some vaporizers, and particularly in vaporizers for delivering more volatile vaporized materials, the inhaled dose may be predominantly in the gas phase (i.e., condensed phase particle formation may be very limited).

As indicated herein, some vaporizers may also (or alternatively) be configured to produce an inhalable dose of a vaporizable material in the gas phase and/or aerosol phase, at least in part, by heating a non-liquid vaporizable material, such as, for example, a solid phase vaporizable material (e.g., wax or the like) or plant material (e.g., tobacco leaves or tobacco leaf parts) containing the vaporizable material. In such vaporizers, the resistive heating element may be integral with or otherwise in thermal contact with the walls of a furnace or other heating chamber in which the non-liquid vaporizable material is contained.

Alternatively, a resistive heating element or elements may be used to heat air passing through or past the non-liquid vaporizable material to cause convective heating of the non-liquid vaporizable material. In other examples, the resistive heating element or elements may be positioned in close contact with the plant material such that direct conductive heating of the plant material occurs from within the mass of plant material (e.g., as opposed to conduction inward from the walls of the furnace).

The heating element may be activated by a controller 104, which may be part of the vaporizer housing 110. The controller 104 may cause current to flow from a power source 112 through a circuit including a resistive heating element, which may be part of the vaporizer cartridge 120. The controller 104 may be activated in association with a user taking a puff (inhaling, inhaling, etc.) on the mouthpiece 130 of the vaporizer 100, which may cause air to flow from the air inlet along an airflow path that passes through the atomizer 141. The atomizer 141 may include a wick, for example, in combination with the heating element.

The airflow caused by the user's inhalation may pass through one or more condensation zones or chambers in and/or downstream of the atomizer 141 and then towards the air outlet in the mouthpiece. The air entering and passing through the airflow channel may thus pass through or over the atomizer 141 or near, adjacent, around, etc., such that the vaporized material in the gas phase (or some other inhalable form of the vaporized material) is drawn into the air, as the atomizer 141 converts some of the vaporized material to the gas phase. As indicated above, the captured vaporized material in the gas phase may condense as it passes through another portion of the airflow channel, such that an inhaled dose of vaporized material in aerosol form may be delivered from the air outlet (e.g., through the mouthpiece 130 for inhalation by the user).

The temperature of the resistive heating element of the vaporizer 100 may depend on one or more of a number of factors, including the amount of electrical power supplied to the resistive heating element, or the duty cycle in which the electrical power is supplied, conductive and/or radiant heat transfer to other parts of the vaporizer 100 or to the environment, specific heat transfer to the air and/or liquid or gaseous vaporized material (e.g., raising the temperature of the vaporized material to its vaporization point or raising the temperature of a gas, such as air and/or air in a mixture with the vaporized vaporized material), latent heat loss due to evaporation of the vaporized material from the wick and/or the atomizer 141 generally, convective heat loss through the air flow (e.g., air moving through the heating element or atomizer 141 generally as a user inhales on the vaporizer 100), etc.

As noted above, in order to reliably activate the heating element or heat the heating element to a desired temperature, in some implementations, the vaporizer 100 may use signals from a pressure sensor to determine when a user inhales. The pressure sensor may be located in the airflow channel or may be connected (e.g., via a passage or other path) to the airflow channel connecting an inlet for admitting air into the device and an outlet through which the user inhales the resulting vapor and/or aerosol, such that the pressure sensor senses changes in pressure as air passes through the vaporizer 100 from the air inlet to the air outlet. In some implementations, the heating element may be activated in response to a user inhaling, for example, by automatically detecting the inhaling, for example, by a pressure sensor detecting a change in pressure in the airflow channel.

Referring to Figures 1, 2A and 28, the vaporizer cartridge 120 may be releasably inserted into the vaporizer housing 110 via a cartridge slot 118. As shown in Figure 2A, which illustrates a planar view of the vaporizer housing 110 next to the vaporizer cartridge 120, the reservoir 140 of the vaporizer cartridge 120 may be formed entirely or partially of a translucent material such that the level of liquid vaporizable material 102 in the vaporizer cartridge 120 may be visible.

The vaporizer cartridge 120 may be configured such that the level of the vaporizable material 102 in the reservoir 140 of the vaporizer cartridge 120 remains visible through a window in the vaporizer housing 110 when the vaporizer cartridge 120 is inserted into the cartridge housing 118. Alternatively or additionally, the level of the liquid vaporizable material 102 in the reservoir 140 may be visible through a transparent or translucent outer wall or a window formed in the outer wall of the vaporizer cartridge 120.

Airflow channel implementation options

Referring to FIGS. 2C and 20), an exemplary vaporizer cartridge 120 is illustrated in which an airflow channel 134 is created during a user's puff on the vaporizer 100. The airflow channel 134 may direct air into a vaporization chamber 150 (see, e.g., FIG. 20) contained within the wick housing, where the air is combined with an inhaled aerosol for delivery to the user via a mouthpiece 130, which may also be part of the vaporizer cartridge 120.

The vaporization chamber 150 may include and/or at least partially contain an atomizer 141, consistent with the remainder of this disclosure. For example, when a user inhales on the vaporizer 100, an airflow channel 134 may extend between an exterior surface of the vaporizer cartridge 120 (e.g., window 132) and an interior surface of the cartridge seat 118 on the vaporizer housing 110. Air may then be drawn into the cartridge end 122, which is inserted through the vaporizer chamber 150, which includes or includes a heating element and a wick element, and exit through an outlet 136 of the mouthpiece 130 to deliver an inhaled aerosol to the user. Other airflow channel configurations are also within the scope of this disclosure, including, but not limited to, those described in more detail below.

Fig. 20 shows additional features that may be included in a vaporizer cartridge 120 consistent with the claimed subject matter. For example, a vaporizer cartridge 120 may include a plurality of cartridge contacts (such as cartridge contacts 124) disposed on an insertable end 122 that is configured to be inserted into a cartridge slot 118 of a vaporizer housing 110.

The cartridge contacts 124 may optionally be part of a single piece of metal that forms a conductive structure (such as conductive structure 126) connected to one of the two ends of the resistive heating element. The conductive structure may optionally form opposite sides of the heating chamber and may optionally act as heat shields and/or heat sinks to reduce heat transfer to the outer walls of the evaporator cartridge 120. Additional details of this aspect are described below.

Fig. 20 also shows a cannula 128 (which is an example of a more general concept also referred to herein as an airflow channel) within the vaporizer cartridge 120 that defines a portion of an airflow channel 134 extending between a heating chamber (also referred to herein as an atomizer chamber, vaporization chamber, or the like), which may be formed, at least in part, by the conductive structure 126, and a mouthpiece 130. This configuration causes air to flow downwardly around the end 122 of the vaporizer cartridge 120 that is inserted into the cartridge housing 118 and then back out in the opposite direction after passing around the insertion end 122 (e.g., the end opposite the end that includes the mouthpiece 130) of the vaporizer cartridge 120 as it enters the cartridge housing toward the vaporization chamber 150. The air flow channel 134 then passes through the interior of the vaporizer cartridge 120, for example, through one or more tubes or internal channels (such as cannula 128) and through one or more outlet openings (such as outlet opening 136) formed in the mouthpiece 130.

Pressure equalization outlet

As mentioned above, the removal of the vaporizable material 102 from the reservoir 140 (e.g., by capillary suction by a capillary element) may create at least a partial vacuum (e.g., a reduced pressure created in the portion of the reservoir that was emptied by consumption of the liquid vaporizable material) relative to the ambient air pressure in the reservoir 140, and such a vacuum may interfere with the capillary action provided by the wick element. This reduced pressure may, in some examples, be sufficiently large in magnitude to reduce the effectiveness of the wick element to draw liquid vaporizable material 102 into vaporizable chamber 150, thereby reducing the effectiveness of vaporizer 100 to vaporize the desired amount of vaporizable material 102, such as when a user takes a puff on vaporizer 100. In extreme cases, the vacuum created in reservoir 140 may result in an inability to draw all of the vaporizable material 102 into vaporizable chamber 150, thus resulting in incomplete utilization of vaporizable material 102. One or more vent elements may be included in association with vaporizer reservoir 140 (regardless of the location of reservoir 140 in vaporizer cartridge 120 or elsewhere in the vaporizer) to provide at least partial equalization (optionally, full equalization) of the pressure in reservoir 140 with ambient pressure (e.g., ambient air pressure outside the tank 140) to mitigate this problem.

In some cases, while equalizing the pressure within the reservoir 140 increases the efficiency of delivering the liquid vaporizable material to the atomizer 141, it does so by filling the vacated void volume (e.g., the space vacated by the use of the liquid vaporizable material) within the reservoir 140 with air. As described in more detail below, this air-filled void volume can then experience pressure changes relative to the ambient air, which can lead, under certain conditions, to the leakage of the liquid vaporizable material from the reservoir 140 and, ultimately, out of the vaporizer cartridge 120 and/or other portion of the vaporizer that contains the reservoir 140. Implementations of the claimed subject matter also provide advantages and benefits with respect to this problem.

Various features and devices that reduce or overcome these problems are described below. For example, various features for controlling airflow as well as the flow of vaporized material are described herein, which can provide advantages and improvements over existing approaches, while also introducing additional advantages as described herein. The vaporizers and/or cartridges described herein include one or more features that control and improve airflow in the vaporizer and/or cartridge, thereby increasing the performance and efficiency of vaporizing liquid vaporized material by the vaporizer without introducing additional features that could lead to leakage of liquid vaporized material.

Fig. 2E and 2E illustrate schematics of first and second embodiments, respectively, of reservoir systems 200A, 2008 configured for a vaporizer cartridge (such as vaporizer cartridge 120) and/or vaporizer device (such as vaporizer 100) to improve pressure equalization and airflow within the vaporizer. More specifically, the reservoir systems 200A, 2008 shown in Fig. 2E and 2E improve pressure regulation within the reservoir 240 such that the vacuum created in the reservoir 240 is released after the user takes a puff on the vaporizer, reducing or even eliminating the possibility of liquid vaporized material leaking through the vent structure. This provides a capillary action of the porous material (e.g., wick element) associated with the reservoir 240 and the evaporation chamber 242 to continue to effectively draw the vaporized material 202 from the reservoir 240 into the evaporation chamber 242 after each puff.

As shown in Fig. 2E and 2F, the reservoir systems 200A, 2008 include a reservoir 240 configured to contain a liquid vaporizable material 202. The reservoir 240 is sealed on all sides by reservoir walls 232, except for a portion of the wick housing that extends between the reservoir 240 and the vaporization chamber 244. A heating element or heater may be located within the vaporization chamber 242 and connected to the wick element. The wick element is configured to provide a capillary action that draws the vaporizable material 202 from the reservoir 240 into the vaporization chamber 242 for vaporization into an aerosol by the heater. The aerosol is then mixed with an air stream 234 passing along an air stream channel 238 of the vaporizer for inhalation by a user.

The reservoir systems 200A, 2008 also include an airflow restrictor 244 that restricts the passage of airflow 234 along the vaporizer airflow channel 238, for example, when a user takes a puff on the vaporizer. The restriction of airflow 234 caused by the airflow restrictor 244 can provide a vacuum along a portion of the airflow channel 238 downstream of the airflow restrictor 244.

The vacuum created along the airflow channel 238 may assist in drawing aerosol formed in the vaporization chamber 242 (e.g., a chamber containing at least a portion of the nebulizer 141) along the airflow channel 238 for inhalation by the user. At least one airflow restrictor 244 may be included in each of the reservoir systems 200A, 2008, and the airflow restrictor 244 may include any number of elements for restricting the airflow 234 along the airflow channel 238.

As shown in Fig. 2E and 2F, each of the reservoir systems 200A, 2008 may also include an outlet 246 configured to selectively admit air into the reservoir 240 to increase the pressure within the reservoir 240 to relieve the reservoir 240 of the negative pressure (vacuum) relative to ambient pressure that occurs when the vaporizable material 202 is drawn from the reservoir 240 as described above. At least one outlet 246 may be associated with the reservoir 240. The outlet 246 may be an active or passive valve, and the outlet 246 may include any number of elements that allow air to pass into the reservoir 240 to relieve the negative pressure created in the reservoir 240.

For example, an embodiment of the outlet 246 may include an outlet passage (channel) that extends between the reservoir 240 and the airflow channel 238 and has a diameter (or, more generally, a cross-sectional area) of such a size that the fluid tension (fluid tension, also referred to as surface tension) of the vaporized material 202 prevents the vaporized material 202 from passing through the channel when the pressure is equalized across the outlet 246 (e.g., the pressure in the reservoir 240 is approximately the same as the pressure in the airflow channel 238). However, the diameter (or, more generally, the cross-sectional area) of the outlet 246 and/or outlet passage may be calculated such that the vacuum pressure (vacuum) created in the reservoir 240 is capable of overcoming the surface tension of the vaporized material 202 in the outlet 246 or outlet passage to cause air bubbles to be released into the reservoir 240 through the outlet in response to a sufficiently low pressure within the reservoir 240 relative to ambient pressure.

Accordingly, a volume of air can pass from the air flow channel 238 into the reservoir 240 and relieve the vacuum pressure. After the volume of air is added to the reservoir 240, the pressure again becomes more precisely equalized across the outlet 246, thereby allowing the surface tension of the vaporized material 202 to prevent air from entering the reservoir 240, and also to prevent the vaporized material from leaking out of the reservoir 240 through the outlet channel.

In one exemplary embodiment, the diameter of the outlet opening 246 or outlet channel may be in the range of about 0.3 mm to 0.6 mm, and may also include diameters in the range of about 0.1 mm to 2 mm. In some examples, the outlet opening 246 and/or outlet channel may be non-circular, such that it may be characterized by a non-circular cross-section along the direction of fluid flow in the outlet channel. In such an example, the cross-section is not defined by diameter, but rather by cross-sectional area. Generally speaking, regardless of whether the cross-sectional shape of the outlet port 246 and/or the outlet channel is circular or non-circular, in some embodiments of the claimed subject matter, it may be preferable for the cross-sectional area of the outlet port 246 to vary along its path between the ambient pressure opening and the interior of the reservoir 240. For example, the portion of the outlet port 246 closer to the external ambient pressure may preferably have a smaller cross-sectional area (e.g., a smaller diameter in the example where the outlet port 246 has a circular cross-section) relative to the portion of the outlet port 246 closer to the interior of the reservoir 240. A smaller cross-sectional area closer to the exterior of the system may provide a greater resistance to the escape of liquid vaporized material, while a larger cross-sectional area closer to the interior of the reservoir 240 may provide a relatively smaller resistance to the escape of an air bubble from the outlet port. opening 246 into the reservoir 240. In some embodiments of the claimed subject matter, the transition between the smaller and larger cross-sectional areas may preferably not be continuous, but instead include a non-uniformity along the length of the outlet opening 246 and/or the outlet channel. Such a structure may be useful for providing a greater overall resistance to the outflow of liquid material than for equalizing the pressure in the reservoir by releasing air bubbles from the outlet opening 246, since the larger cross-sectional area near the reservoir may have a lower capillary action relative to the smaller cross-sectional area open to the ambient air.

The material of the outlet port 246 and/or outlet channel may also assist in regulating the outlet port 246 and/or outlet channel, for example, by affecting the contact angle between the walls of the outlet port 246 and/or outlet channel and the vaporizable material 202. The contact angle may affect the surface tension created by the vaporizable material 202, and thus affect the threshold pressure drop that may be created across the outlet port 246 and/or outlet channel before a volume of fluid can pass through the outlet port 246, as described above. The outlet port 246 may have various shapes/sizes and configurations that are within the scope of this disclosure. In addition, various embodiments of cartridges and cartridge parts that include one or more of a plurality of discharge elements are described in more detail below.

The location of the outlet 246 (e.g., passive outlet) and airflow restrictor 244 relative to the vapor chamber 242 facilitates the efficient operation of the reservoir systems 200A, 2008. For example, improper location of either the outlet 246 or the airflow restrictor 244 may result in unwanted leakage of vaporized material 202 from the reservoir 240. The present disclosure contemplates effective location of the outlet 246 and airflow restrictor 244 relative to the vapor chamber 242 (containing the wick). For example, a small or zero pressure drop between the passive outlet and the wick may result in an efficient reservoir system for relieving vacuum pressure in the reservoir and result in effective capillary action of the wick in preventing leakage. The configuration of the reservoir system having an effective location of the outlet 246 and the airflow restrictor 244 relative to the evaporation chamber 242 is described in more detail below.

As shown in Fig. 2E, an airflow restrictor 244 may be positioned upstream of the vaporization chamber 242 along the airflow channel 238, and an outlet 246 may be positioned along the reservoir 240 such that it provides fluid communication between the reservoir 240 and the portion of the airflow channel 238 that is downstream of the vaporization chamber 242. Essentially, when a user takes a puff on the vaporizer, a negative pressure is created downstream of the airflow restrictor 244, such that the vaporization chamber 242 is subjected to a negative pressure. Similarly, the side of the outlet 246 that communicates with the airflow channel 238 is also subjected to a negative pressure.

Essentially, a small amount of pressure difference is created between the outlet 246 and the vaporization chamber 242 during a draw (e.g., when the user inhales or sucks air from the vaporization device). However, after a draw, the capillary action of the wick will draw vaporizable material 202 from the reservoir 240 into the vaporization chamber 242 to replenish the vaporizable material 202 that was vaporized and consumed during the previous draw. As a result, a vacuum or negative pressure will be created in the reservoir 240. A pressure difference will then occur between the reservoir 240 and the airflow passage 238. As discussed above, the outlet 246 may be configured such that a pressure difference (e.g., a threshold pressure difference) between the reservoir 240 and the airflow channel 238 allows a volume of air to pass from the airflow channel 238 into the reservoir 240, thereby relieving the vacuum in the reservoir 240 and returning to an equalized pressure at the outlet 246 and the stable reservoir system 200A.

In another embodiment, as shown in Fig. 2E, the airflow restrictor 244 may be located downstream of the vaporization chamber 242 along the airflow channel 238, and the outlet 246 may be located along the reservoir 240 such that it provides fluid communication between the reservoir 240 and the portion of the airflow channel 238 that is upstream of the vaporization chamber 242. Essentially, when a user takes a puff on the vaporizer, the vaporization chamber 242 and the outlet 246 have little or no vacuum or negative pressure as a result of the puff, thus resulting in little or no pressure drop between the vaporization chamber 242 and the outlet 244. Similar to the case in Fig. 2E, the pressure drop created at the outlet 246 will be the result of the capillary action of the wick drawing the vaporizable material 202 into the vaporizing chamber 242 upon draw. As a result, a vacuum or negative pressure will be created in the reservoir 240. A pressure drop will then occur at the outlet 246.

As discussed above, the outlet 246 may be configured such that a pressure difference (e.g., a threshold pressure difference) between the reservoir 240 and the airflow passage 238 or the atmosphere allows a volume of air to pass into the reservoir 240, thereby relieving the vacuum in the reservoir 240. This allows for equalization of pressure at the outlet 246 and stabilization of the reservoir systems 2008. The outlet 246 may have various configurations and features and may be located at a variety of locations along the evaporator housing 120 to achieve various results. For example, one or more outlets 246 may be located adjacent to or form part of the evaporation chamber 242 or the wick housing. In such a configuration, one or more outlet ports 246 may provide fluid communication (e.g., air communication) between the reservoir 240 and the vaporization chamber 242 (through which airflow passes when a user takes a puff on the vaporizer and which is thus part of the airflow channel).

Similarly, as described above, an outlet port 246, which is adjacent to or forms part of the vaporization chamber 242 or the wick housing, may allow air from within the vaporization chamber 242 to pass into the reservoir 240 through the outlet port 246 to increase the pressure within the reservoir 240, thereby effectively relieving the vacuum pressure (vacuum) created by drawing the vaporizable material 202 into the vaporization chamber 242. As such, the vacuum release provides for an effective and efficient capillary action of the vaporizable material 202 into the vaporization chamber 242 through the wick to create an inhalable vapor during subsequent draw on the vaporizer by the user. The following description presents various embodiments of an exhaust element of an evaporation chamber (e.g., a spray assembly) that includes a wick housing 1315, 178 (which houses the evaporation chamber) and at least one exhaust port 596 connected to or forming part of a portion of the wick housing 1315, 178 to achieve the aforementioned effective ventilation of the reservoir 140.

Variants of implementation of the cartridge assembly with open ends

Figures 3A and 3B show exemplary planar cross-sectional views of an alternative embodiment of a cartridge 1320, in which the cartridge 1320 includes a mouthpiece or mouthpiece portion 1330, a reservoir 1340, and an atomizer (not shown separately). The atomizer may include a heating element 1350 and a wick element 1362, either together or separately, depending on the implementation, such that the wick element 1362 is thermally or thermodynamically coupled to the heating element 1350 for the purpose of vaporizing vaporizable material 1302 drawn from or stored in the wick element 1362.

In one embodiment, plates 1326 may be included to provide electrical connection between heating element 1350 and power source 112 (see FIG. 1 ). An airflow channel 1338 defined through or on the side of reservoir 1340 may connect a portion of cartridge 1320 in which wick element 1362 (e.g., wick housing, not separately shown) is located to an opening leading to mouthpiece or mouthpiece portion 1330 to provide a path for vaporized evaporative material 1302 to travel from heating element portion 1350 to mouthpiece portion 1330.

As described above, the wick element 1362 may be connected to a spray or heating element 1350 (e.g., a resistive heating element or coil) that is connected to one or more electrical contacts (e.g., plates 1326). The heating element 1350 (and other heating elements described herein in accordance with one or more embodiments) may have various shapes and/or configurations and may include one or more heating elements 1350, 500, or portions thereof, as described in more detail below with reference to Figs. 44A-116.

According to one or more exemplary implementations, the heating element 1350 of the cartridge 1320 may be fabricated (e.g., stamped) from a sheet of material and either compressed around at least a portion of the wick element 1362 or bent to provide a preformed member configured to receive the wick element 1362 (e.g., the wick element 1362 is pushed into the heating element 1350, and/or the heating element 1350 is held in tension and pulled over the wick element 1362).

The heating element 1350 may be bent such that the heating element 1350 secures the wick element 1362 between at least two or three portions of the heating element 1350.

The heating element 1350 may be bent to conform to the shape of at least a portion of the wick element 1362. The configurations of the heating element 1350 provide for more consistent and improved manufacturing quality of the heating element 1350. Consistent manufacturing quality of the heating element 1350 may be particularly important during scalable and/or automated manufacturing processes. For example, the heating element 1350 according to one or more embodiments helps to reduce tolerance issues that may arise during the manufacturing process when assembling the heating element 1350 having multiple components.

The heating element 1350 may also improve the accuracy of measurements obtained from the heating element 1350 (e.g., resistance, current, temperature, etc.), at least in part, due to improved stability in the manufacturability of the heating element 1350, which has reduced tolerance issues. The heating element 1350, being fabricated (e.g., stamped) from a sheet of material and either crimped around at least a portion of the wick element 1362 or bent to provide a preformed element, advantageously helps minimize heat loss and helps ensure that the heating element 1350 behaves predictably when heated to the appropriate temperature.

In addition, as further discussed below with respect to the included embodiment of a heating element made of a compressed metal, the heating element 1350 may be fully and/or selectively coated with one or more materials to improve the heating efficiency of the heating element 1350. Coating all or a portion of the heating element 1350 may help minimize heat loss. The coating may also help concentrate heat on a portion of the heating element 1350, thereby providing a heating element 1350 that is more efficiently heated and further reduces heat loss. The selective coating may help direct the current entering the heating element 1350 to the proper location. The selective coating may also help reduce the amount of coating material and/or cost associated with manufacturing the heating element 1350.

In addition to or in combination with the exemplary heating elements described and/or discussed below, the heating element may include a planar heating element 1850 (see FIG.

Fig. 18A-180), located in the evaporator cartridge 1800, including two air flow channels 1838, a composite heating element 1950 (see Figs. 19A-19C, 22A-22B and 44A-116), located in the evaporator cartridge 1900, including two air flow channels 1938, and a composite heating element 2050 (see Figs. 20A-20C), located in the evaporator cartridge 2000, including one air flow channel 20386.

As noted above, the heating element 1350, in one embodiment, may include a wick element 1362. For example, the wick element 1362 may extend near or adjacent to the plates 1326 and through the resistive heating elements in contact with the plates 1326. The wick housing may surround at least a portion of the heating element 1350 and connect the heating element 1350 directly or indirectly to the airflow channel 1338. The vaporizable material 1302 may be drawn into the wick element 1362 through one or more channels connected to the reservoir 1340. In one embodiment, one or both of the primary passage 1382 or the secondary passage 1384 may be used to assist in directing and delivering the vaporizable material 1302 to one or both ends of the wick element 1362 or radially along the length of the wick element 1362.

Overflow collector implementation options

As described in more detail below, particularly with reference to Figs. 3A and 3B, the exchange of air and liquid vaporized material into and out of the cartridge reservoir 1340 can be successfully controlled, and the volumetric efficiency of the vaporizer cartridge (defined as the volume of liquid vaporized material that is ultimately converted to an aerosol for inhalation, relative to the total volume of the cartridge itself) can also be further improved by the inclusion of a structure referred to as a manifold 1313.

According to some implementations, the cartridge 1320 may include a reservoir 1340 that is at least partially defined by at least one wall (which may optionally be a wall shared with an outer shell of the cartridge) configured to contain liquid evaporable material 1302. The reservoir 1340 may include a storage chamber 1342 and an overflow volume 1344, which may include or otherwise contain a manifold 1313. The storage chamber 1342 may contain evaporable material 1302, and the overflow volume 1344 may be configured to collect or retain at least a portion of the evaporable material 1302 when one or more factors cause the evaporable material 1302 in the storage chamber 1342 of the reservoir to move into the overflow volume 1344. In some implementations of the claimed subject matter, the cartridge may be initially filled with liquid evaporable material, so that the free space inside the collector is pre-filled with liquid evaporable material.

In exemplary embodiments, the volumetric size of the overflow volume 1344 may be configured to be equal to, approximately equal to, or greater than the amount of increase in volume of the contents (e.g., vaporized material 1302 and air) contained in the storage chamber 1342 when the volume of the contents in the storage chamber 1342 expands through the maximum expected pressure change that the reservoir may experience relative to ambient pressure.

Depending on changes in pressure or ambient temperature or other factors, the cartridge 1320 may experience a change from a first pressure state to a second pressure state (e.g., a first relative pressure difference between the interior of the reservoir and ambient pressure and a second relative pressure difference between the interior of the reservoir and ambient pressure).

In some aspects, the overflow volume 1344 may have an opening to the exterior of the cartridge 1320 and may communicate with the reservoir reservoir chamber 1342 such that the overflow volume 1344 may act as an outlet to provide pressure equalization within the cartridge 1320 and/or to collect and at least temporarily contain and, optionally, return liquid vaporized material that may exit the reservoir chamber in response to changes in the pressure differential between the reservoir chamber and the ambient air. As described herein, the pressure differential refers to the absolute pressure difference between the interior of the reservoir and the ambient air. The vaporized material 1302 may be drawn from the storage chamber 1342 into the atomizer and converted to a vapor or aerosol phase, reducing the volume of vaporized material remaining in the storage chamber 1342, and, in the absence of any mechanism for returning air to the storage chamber to equalize the pressure therein with ambient pressure, may result in the at least partial vacuum condition discussed above.

As shown in Fig. 3A and 3B, the reservoir 1340 can be implemented to include first and second separable sections, such that the volume of the reservoir 1340 is divided into a reservoir storage chamber 1342 and a reservoir overflow volume 1344. The storage chamber 1342 can be configured to store the vaporized material 1302 and can be further connected to the wick element 1362 via one or more primary passages 1382. In some examples, the primary passage 1362 can be very short in length (e.g., a through hole from a space containing the wick element or other parts of the atomizer). In other examples, the primary passage can be part of a longer channel containing a fluid medium between the storage chamber and the wick element. Overflow volume 1344 may be configured to collect and hold portions of vaporized material 1302 that may flow from storage chamber 1342 in a second pressure state in which the pressure in storage chamber 1342 is greater than ambient pressure, as described in more detail below.

In a first pressure state, the vaporizable material 1302 may accumulate in a storage chamber 1342 of the reservoir 1340. The first pressure state may exist, for example, when the ambient pressure is approximately the same as or greater than the pressure within the cartridge 1320. In this first pressure state, the structural and functional properties of the primary passage 1382 and the secondary passage 1384 are such that the vaporizable material 1302 may flow from the storage chamber 1342 toward the wick element 1362 through the primary passage 1382, for example, by the capillary action of the wick element to draw the liquid near the heating element, which serves to convert the liquid vaporizable material into a gas phase.

In one embodiment, in a first pressure state, no or only limited amounts of vaporizable material 1302 flow into secondary passage 1382. In a second pressure state, vaporizable material 1302 may flow from storage chamber 1342 into overflow volume 1344 of reservoir 1340, which, for example, includes a manifold 1313 to prevent or limit unwanted (e.g., excessive) flow of vaporizable material 1302 from the reservoir. The second pressure state may exist or be caused, for example, when an air bubble expands in storage chamber 1342 (e.g., due to ambient pressure becoming less than the pressure inside cartridge 1320).

Preferably, the flow of vaporized material 1302 can be controlled by directing vaporized material 1302 expelled from the storage chamber 1342 by increasing pressure into an overflow volume 1344. A manifold 1313 within the overflow volume can include one or more capillary structures that contain at least a portion (and preferably all) of the excess liquid vaporized material expelled from the storage chamber 1342, preventing the liquid vaporized material from reaching the outlet of the manifold 1313. The manifold 1313 also preferably includes capillary structures that allow liquid vaporized material expelled into the manifold 1313 by the excess pressure in the storage chamber 1342 relative to ambient pressure to be drawn back into the storage chamber 1342 when the pressure in the storage chamber 1342 equalizes or otherwise decreases. relative to ambient pressure. In other words, the secondary passage 1384 of the collector 1313 may have microfluidic features or properties that prevent the passage of air and liquid relative to each other during filling and emptying of the collector 1313. That is, the microfluidic elements may be used to control the flow of the vaporized material 1302 both into and out of the collector 1313 (i.e., provide flow reversal properties) to prevent or reduce leakage of the vaporized material 1302 or entrapment of air bubbles into the storage chamber 1342 or the overflow volume 1344.

Depending on the implementation, the microfluidic elements or properties listed above may be related to the size, shape, surface coating, structural features, and capillary properties of the wick element 1362, the primary passage 1382, and the secondary passage 1384.

For example, the secondary passage 1384 in the manifold 1313 may optionally have different capillary properties than the primary passage 1382 leading to the wick element 1362 to allow a certain volume of the vaporized material 1302 to pass from the storage chamber 1342 to the overflow volume 1344 during the second pressure state.

In one exemplary implementation, the overall resistance of the manifold 1313 to fluid flow outward is greater than the overall resistance of the wick, e.g., to the flow of vaporized material 1302 primarily through the primary passage 1382 to the wick element 1362 during the first pressure state.

The wick element 1362 may provide a capillary path through or into the wick element 1362 for the vaporizable material 1302 stored in the reservoir 1340. The capillary path (e.g., primary passage 1382) may be large enough to provide a wicking action or capillary action to replace the vaporized vaporizable material 1302 in the wick element 1362, and may be small enough to prevent the vaporizable material 1302 from leaking out of the cartridge 1320 under negative pressure conditions. The wick body or wick element 1362 may be treated to prevent leakage. For example, the cartridge 1320 may be coated after filling to prevent leakage or evaporation through the wick element 1362. Any suitable coating may be used, including, for example, a thermally vaporizable coating (e.g., wax or other material).

When a user inhales into the mouthpiece portion 1330, for example, air flows into the cartridge 1320 through an inlet or opening in operative communication with the wick element 1362. The heating element 1350 may be activated in response to a signal generated by one or more sensors 113 (see FIG. 1). The one or more sensors 113 may include at least one pressure sensor, motion sensor, flow sensor, or other mechanism capable of detecting changes in the airflow path 1338. When the heating element 1350 is activated, the heating element 1350 may have an increase in temperature as a result of current flowing through the plates 1326 or through some other electrically resistive portion of the heating element that serves to convert electrical energy into thermal energy.

In one embodiment, the heat generated may be transferred to at least a portion of the vaporizable material 1302 in the wick element 1362 by conductive, convective, or radiative heat transfer, such that at least a portion of the vaporizable material 1302 drawn into the wick element 1362 is vaporized. Depending on the implementation, air entering the cartridge 1320 flows through (or around, near, etc.) the wick element 1362 and the heating elements in the heating element 1350 and carries the vaporized vaporizable material 1302 into the airflow channel 1338, where the vapor may optionally be condensed and delivered in aerosol form, for example, through an opening in the mouthpiece portion 1330.

Referring to Fig. 3B, the storage chamber 1342 may be connected to the air flow channel 1338 (i.e., via the secondary passage 1384 of the overflow volume 1344) to enable liquid vaporizable material displaced from the storage chamber 1342 by the increased pressure in the storage chamber 1342 relative to the environment to be contained without leaving the vaporizer cartridge. While the implementations described herein relate to a vaporizer cartridge containing a reservoir 1340, it should be understood that the described approaches are also compatible and can be used in a vaporizer that does not have a detachable cartridge.

For example, air entering the storage chamber 1342 may expand due to a pressure difference relative to the surrounding air. The expansion of this air in the headspace of the storage chamber 1342 may cause liquid vaporized material to pass through at least a portion of the secondary passage 1384 in the manifold 1313.

The microfluidic elements of the secondary passage 1384 can cause the liquid vaporized material to move along the length of the secondary passage 1384 in the manifold 1313 only with a meniscus that completely covers the cross-sectional area of the secondary passage 1384 transverse to the longitudinal flow direction.

In some embodiments of the claimed subject matter, the microfluidic elements may include a cross-sectional area sufficiently small for the material from which the walls of the secondary passage are formed, and the composition of the liquid vaporizable material, the liquid vaporizable material preferably wets the secondary passage 1384 along the entire perimeter of the secondary passage 1384. For the example in which the liquid vaporizable material includes one or more of propylene glycol and vegetable glycerin, the wetting properties of such a liquid are preferably considered in combination with the geometry of the secondary passage 1384 and the materials from which the walls of the secondary passage are formed. Thus, when the sign (e.g., positive, negative, or equal to) and magnitude of the pressure difference between the storage chamber 1340 and the ambient pressure change, a meniscus is maintained between the liquid in the secondary passage and the air coming from the surrounding atmosphere, and the liquid and air cannot move past each other. When the pressure in the storage chamber 1340 drops sufficiently relative to ambient pressure, and if there is sufficient void volume in the storage chamber 1340 to allow this, liquid in the secondary passage 1384 of the manifold 1313 can be drawn into the storage chamber 1342 sufficiently to force the leading meniscus at the liquid-air interface to reach the shutter or port between the secondary passage 1384 of the manifold 1313 and the storage chamber 1340. At this time, if the pressure difference in the storage chamber 1342 relative to the ambient pressure is sufficiently negative to overcome the surface tension supporting the meniscus at the shutter or port, the meniscus breaks free from the walls of the shutter or port and forms one or more air bubbles that are released into the storage chamber 1342 with sufficient volume to equalize the pressure in storage chamber relative to the environment.

When air entering the storage chamber 1340, as discussed above (or otherwise entering it), experiences a state of increased pressure relative to the environment (e.g., due to a drop in ambient pressure, as may occur in an airplane cabin or other high altitude locations, when a moving vehicle window is opened, when a train or vehicle leaves a tunnel, etc., or an increase in internal pressure within the storage chamber 1340, as may occur due to localized heating, mechanical pressure that distorts the shape and thus reduces the volume of the storage chamber 1340, etc.), the above process may be reversed. The liquid passes through a gate or port into the secondary passage 1384 of the manifold 1313, and a meniscus forms near the leading edge of the column of liquid passing into the secondary passage 1384 to prevent the air from bypassing and flowing against the flow of the liquid. By maintaining this meniscus by virtue of the aforementioned microfluidic properties, when the increased pressure in the storage chamber 1340 is later reduced, the column of liquid is drawn back into the storage chamber, optionally until the meniscus reaches a gate or port. If the pressure difference is sufficiently favorable to the ambient pressure relative to the pressure in the storage chamber, the above-described bubble formation process occurs until the pressure is equalized. Thus, the manifold acts as a reversible overflow volume that receives liquid vaporized material displaced from the storage chamber during the transient conditions of higher pressure in the storage chamber relative to the ambient, and allows at least a portion (and preferably all or a large portion) of this overflow volume to be returned to the storage chamber for subsequent delivery to a nebulizer for conversion into an inhalation form.

Depending on the implementation, the storage chamber 1342 may or may not be connected to the wick element 1362 via a secondary passage 1384. In implementations in which the second end of the secondary passage 1384 leads to the wick element 1362, any vaporized material 1302 that may exit the secondary passage 1384 at the second end (opposite the first end defining the connection point to the storage chamber 1340) may further saturate the wick element 1362.

The storage chamber 1340 may optionally be located near the end of the reservoir 1340 that is proximate the mouthpiece portion 1330. The overflow volume 1344 may be located near the end of the reservoir 1340 proximate the heating element 1350, for example, between the storage chamber 1342 and the heating element 1350. The exemplary embodiments shown in the drawings should not be construed as limiting the scope of the claimed subject matter with respect to the location of the various components disclosed herein. For example, the overflow volume 1344 may be located at the top, middle, or bottom of the cartridge 1320. The location and arrangement of the storage chamber 1340 may be adjustable relative to the position of the overflow volume 1344, such that the storage chamber 1342 may be located at the top, middle, or bottom of the cartridge 1320, according to one or more embodiments.

In one implementation, when the vaporizer cartridge 1320 is completely filled, the volume of liquid vaporizable material may be equal to the internal volume of the storage chamber 1342 plus the overflow volume 1344 (which in some examples may be the volume of the secondary passage 1384 between the gate or port connecting the secondary passage 1384 to the storage chamber 1340) and the outlet of the secondary passage 1384. In other words, a vaporizer cartridge consistent with embodiments of the claimed subject matter may be initially filled with liquid vaporizable material such that all or at least a portion of the internal volume of the collector is filled with liquid vaporizable material. In such an example, the liquid vaporizable material is supplied to the atomizer as needed for delivery to the user. The liquid vaporizable material being delivered may be drawn from the storage chamber 1340, thereby forcing the liquid in the secondary passage 1384 of the manifold 1313 to be drawn back into the storage chamber 1340, as air cannot enter the secondary passage 1384 due to the meniscus maintained by the microfluidic properties of the secondary passage 1384, which prevents air from flowing past the liquid vaporizable material in the secondary passage 1384. Once a sufficient amount of liquid vaporizable material is delivered to the atomizer from the storage chamber 1340 (e.g., for vaporization and inhalation by the user) to cause the initial volume of the manifold 1313 to be drawn into the storage chamber 1340, the above-described action occurs—air bubbles may be released from the shutter or port between the secondary passage 1384 and a storage chamber to equalize the pressure in the storage chamber when more liquid vaporizable material is used. When the air entering the storage chamber is pressurized relative to ambient pressure, the liquid vaporizable material moves from the storage chamber 1340 past the gate or port into the secondary passage until an elevated pressure condition no longer exists in the storage chamber, at which point the liquid vaporizable material in the secondary passage 1384 can be drawn back into the storage chamber 1340.

In some embodiments, the overflow volume 1344 is large enough to contain a percentage of the vaporized material 1302 stored in the storage chamber 1342, optionally up to about 100%. In one embodiment, the collector 1313 is configured to contain at least 6% to 25% of the volume of the vaporized material 1302 stored in the storage chamber 1342. Other ranges are possible.

The collector structure 1313 may be formed, designed, molded, fabricated, or disposed within the overflow volume 1344 in various shapes and have various properties to allow the overflowing portions of the vaporized material 1302 to be at least temporarily contained, contained, or accumulated within the overflow volume 1314 in a controllable manner (e.g., by capillary pressure) to prevent the vaporized material 1302 from leaking out of the cartridge 1320 or from over-saturating the wick element 1362. It should be understood that the above description regarding the secondary passage is not intended to be limited to a single such secondary passage 1384. One or, optionally, more than one secondary passage may be connected to the accumulation chamber 1340 through one or more shutters or ports. In some embodiments of the claimed subject matter, a single gate or port may be connected to more than one secondary passage, or a single secondary passage may be divided into more than one secondary passage to provide additional overflow volume or other advantages.

In some implementations of the claimed subject matter, the air outlet 1318 may connect the overflow volume 1344 to the airflow channel 1338, which ultimately leads to the external environment outside the cartridge 130. This air outlet 1318 may provide a path for air or bubbles that may be formed or trapped in the manifold 1313 to exit through the air outlet 1318, for example, during a second pressure state when the secondary passage 1384 is filled with the overflow of the vaporized material 1302.

In some aspects, the air outlet 1318 may act as a return outlet and provide pressure equalization within the cartridge 1320 during the return to the first pressure state from the second pressure state as the overflow of the vaporized material 1302 is returned back to the storage chamber 1342 from the overflow volume 1344. In this embodiment, when the ambient pressure becomes greater than the internal pressure within the cartridge 1320, ambient air may flow through the air outlet 1318 into the secondary passage 1384 and effectively assist in displacing the vaporized material 1302 temporarily stored in the overflow volume 1344 in the reverse direction back into the storage chamber 1342.

In one or more embodiments, the secondary passage 1384 in the first pressure state may include air. In the second pressure state, the vaporizable material 1302 may enter the secondary passage 1384, for example, through an opening (i.e., an outlet) at the transition point between the storage chamber 1342 and the overflow volume 1344. As a result, the air in the secondary passage 1384 is displaced and may exit through the air outlet 1318. In some embodiments, the air outlet 1318 may act as a control valve or include a control valve (e.g., a selective osmosis membrane, a microfluidic gate, etc.) that allows air to exit the overflow volume 1344 but blocks the vaporizable material 1302 from exiting the secondary passage 1384 into the air flow channel 1338. As noted above, the air outlet 1318 may act as an air exchange port to allow air to enter and exit the manifold 1313 when, for example, the manifold 1313 is filled during a negative pressure event and emptied after a negative pressure event (i.e., during a transition between the first and second pressure states described earlier).

Accordingly, the vaporized material 1302 may be stored in the manifold 1313 until the pressure within the cartridge 31320 stabilizes (e.g., when the pressure returns to ambient pressure or satisfies a predetermined equilibrium), or until the vaporized material 1302 is removed from the overflow volume 1344 (e.g., by vaporization in a nebulizer). Thus, the level of the vaporized material 1302 in the overflow volume 1344 may be controlled by controlling the flow of the vaporized material 1302 into and out of the manifold 1313 as the ambient pressure changes. In one or more embodiments, the overflow of the vaporized material 1302 from the storage chamber 1342 to the overflow volume 1344 may be reversed or may be reversible depending on detected changes in the environment (e.g., when the pressure event that caused the overflow of the vaporized material 1302 decreases or ends).

As noted above, in some embodiments of the claimed subject matter, in a condition where the pressure within the cartridge 1320 becomes relatively lower than the ambient pressure (e.g., upon transitioning from the second pressure state noted above back to the first pressure state), the flow of the vaporized material 1302 may be reversed in a direction that causes the vaporized material 1302 to flow back from the overflow volume 1344 into the storage chamber 1342 of the reservoir 1340. Thus, depending on the implementation, the overflow volume 1344 may be configured to temporarily accommodate portions of the vaporized material 1302 that overflow during the second pressure state. Depending on the implementation, during or after returning to the first pressure state, at least a portion of the overflow of the vaporized material 1302 contained in the manifold 1313 is returned back to the storage chamber 1342.

To control the flow of evaporative material 1302 in cartridge 1320, in other embodiments of the claimed subject matter, collector 1313 may optionally include an absorbent (hygroscopic) or semi-hygroscopic material (e.g., a material having sponge-like properties) to permanently or semi-permanently collect or contain the overflow of evaporative material 1302 passing through secondary passage 1384. In an exemplary embodiment in which a hygroscopic material is included in collector 1313, reverse flow of evaporative material 1302 from overflow volume 1344 into storage chamber 1342 may not be as practical or possible compared to embodiments that are implemented without (or without as much) hygroscopic material in collector 1313. Accordingly, the turnover or rate of turnover of evaporative material 1302 into storage chamber 1342 may be reduced. The chamber 1342 can be adjusted by including hygroscopic materials of greater or lesser density or volume in the collector 1313 or by controlling the texture of the hygroscopic material, where such characteristics result in a higher or lower absorption rate, either immediately or over longer periods of time.

Fig. 4 is an exploded perspective view of an exemplary implementation of a cartridge 1320. As shown, the cartridge body 1320 may be formed from two interlocking (or separable) parts, such as a first part 1422 (e.g., an upper body) and a second part 1424 (e.g., a lower body), which may be interlocked together in a top-down assembly pattern or process. This separable architecture simplifies the assembly and manufacturing process and may not involve the assembly or construction of multiple smaller parts to construct a larger part.

Instead, as in the exemplary embodiment shown in Fig. 4, larger parts (e.g., first part 1422 and second part 1424) may be connected, for example, to external elements of the cartridge (e.g., a liner) and to smaller internal components of the cartridge (e.g., opposing rib-shaped elements that form one or more of a manifold 1313, a reservoir 1340, a storage chamber 1342, an overflow volume 1344, etc.).

Referring to Fig. 4, a heating element 1450 may be disposed in a cavity or housing formed between a first member 1422 and a second member 1424 of the cartridge housing 1420. In one example, a sponge or other absorbent material 1460 may also be disposed in a mouthpiece region 1430 to collect excess liquid vapor (which may be formed, for example, by condensation of vapor and/or water vapor to form large droplets that may be unpleasant to consume during inhalation) that travels through the airflow channel 1438. Accordingly, assembly or disassembly of additional components (e.g., heating element 1450 or sponge 1460) can be accomplished in a simple and efficient manner, where a large number of machine parts or assembly machines may not be required to construct cartridge 1320 from a small set of components into a single detachable two-component housing in the exemplary implementation disclosed herein.

The described detachable two-piece structure may provide one or more of the following exemplary advantages or improvements over alternative implementations: fewer parts, lower assembly or manufacturing costs (e.g., the embodiment shown in

Fig. 4, requires the fabrication and assembly of four parts), no or reduced tooling requirements, elimination or limitation of deep, fragile, low-traction tooling; rib structures that are relatively shallow. Depending on the implementation, ultrasonic or laser welding techniques may be used to create a solid-state weld between the first part 1422 and the second part 1424 of the cartridge 1420.

Ultrasonic welding is a process commonly used for plastics in which high-frequency ultrasonic acoustic vibrations are locally applied to workpieces (e.g., first part 1422 and second part 1424), which are held together under pressure to create a solid weld. Laser welding is a welding process used to join metal or thermoplastic parts using a laser beam that provides a concentrated heat source (e.g., a laser beam), allowing narrow, deep welds to be produced at high welding speeds.

Referring to FIG. 5, a planar side view in cross-section of a selected portion of the cartridge 1320 is illustrated. Referring to FIGS. 4 and 5, the first part 1422 (not shown in FIG. 5) and the second part 1424 of the cartridge 1420 may be formed from plastic by injection molding (e.g., in a top-down implementation). In one exemplary embodiment, a pull-out tooling line may be used to separate the molded halves (e.g., the first part 1422 and the second part 1424, as shown in FIG. 4), allowing each part to be pulled out without any obstruction due to undercuts, and further allowing for significant mold cavitation to facilitate a shorter process cycle and more efficient manufacturing process.

Fig. 6A and 6B respectively show a top cross-sectional view and a side perspective view of a cartridge 1320. As shown, a fill port 610 may be implemented in one or more embodiments of the cartridge 1320 to fill a reservoir reservoir chamber 1342 using, for example, a fill needle 622. As shown, the fill needle 622 may be easily and conveniently inserted into the fill port 610 using a fill channel 630 that leads into the reservoir chamber 1342 (or overflow volume 1344), depending on the implementation. Accordingly, the vaporizable material 1302 may be introduced into the reservoir 1340 through the fill channel 630, using, for example, the fill needle 622. In some embodiments, the fill channel 630 may be formed or located on the side of the cartridge 1320, for example, opposite the side where the airflow channel 1338 is located.

Fig. 7A-7O show alternative embodiments for the cartridge connection port. Fig. 7A and 7B are perspective views, and Fig. 7C and 70 are planar cross-sectional side views of alternative embodiments of the connection port, which, by way of example, may include enclosing or enclosing engaging elements. As shown in Fig. 1, 2 and 7A-7O, the cartridge 1320 may be implemented in various configurations at the end where the cartridge 1320 engages the evaporator housing 110. In one embodiment, as shown in Fig. 1 and 2, the vaporizer housing 110 may include a cartridge socket 118 for removably positioning a cartridge 1320 with a mating port 710 (see FIGS. 7A and 7C) such that, in the attached state, the cartridge contacts 124 located in the mating port of the cartridge 1320 engage corresponding socket contacts 125 in the cartridge socket 118, e.g., by snapping. A corresponding configuration may be in the cartridge 1320 having a mating port 712 (see FIGS. 7B and 70) for receiving the end of the vaporizer housing 110 that includes the socket contacts 125.

Fig. 8 shows a planar top view of the cartridge 1320. In one example, the cartridge 1320 may be implemented using a separable two-piece design, where relief (e.g., a trademark of the owner, serial number, patent number, etc.) or, optionally, decorative or ornamental elements may be printed on the outer walls of the cartridge 1320 during the molding process. The molding process provides flexibility in designing the outer shape or externally visible logos or decorative elements without affecting the positioning or shaping of the internal functional components (e.g., the reservoir 1340, the storage chamber 1342, or the overflow volume 1344).

Note that the apt EAR (F), as shown in Fig. 8, is a registered trademark

USHYTSI. GAVB, Ips. OeiIaulage Sogrogayop with its headquarters in San Francisco, California. All rights reserved by the owner or successor in title of the trademark. Use of the exemplary label on

Fig. 8 should not be construed as limiting the scope of the disclosed subject matter to include such exclusive design or marking. Some embodiments may be unmarked or may not include any decorative or appearance elements. Thus, Fig. 8 provides an illustration of a molded relief that, without limitation, may appear as a marking or design on one or more sides of the cartridge 130.

Fig. 9A and 98 show perspective and planar cross-sectional views of an exemplary cartridge 1320, where a first part 1422 of the cartridge 1320 is separated from a second part 1424 (see also Fig. 4). In one or more embodiments, the cartridge 1320 may be designed and manufactured by separating the parts. That is, depending on the implementation, a plurality of separating parts of the part are connected to each other to obtain the entire part, as shown in the example in Fig. 4.

Referring to Fig. 9A, the separation of the part may provide a mold fit to retain the electrical contact and heating element in the wick housing region 910. As shown in more detail in Fig. 9B, one or more vents 920 may be drilled or positioned, by injection molding or other suitable method, in the cartridge housing 1320 at a location adjacent the wick housing region 910 to allow for highly accurate vapor removal or, for example, airflow to the wick to aid in controlling condensation in the cartridge 1320 or to affect capillary forces therein.

Figs. 10A and 108 show assembled and exploded perspective views of an alternative exemplary embodiment of a cartridge 1320. As previously indicated, a top-down implementation model may be used to create an open cartridge design, for example, with two attachable (or removable) housings comprising a first member 1422 and a second member 1424. As shown, the first member 1422 (e.g., upper housing) and the second member 1424 (e.g., lower housing) may provide a two-piece structure having one or more internal cavities that may be used to accommodate at least one of a heating element 1350, a wick element 1362, or plates 1326. It will be appreciated that alternative assembly methods may be used to provide structures having some or all of the features described herein.

In particular, in the exemplary embodiment shown in FIGS. 10A and 108, instead of or in addition to using molded cavities and walls to form the internal structures (e.g., reservoir 1340 in FIG. 3A) of the cartridge, some features, such as secondary passage 1384 (see FIG. 3A), may be embodied in a removable or attachable manifold 1313, which may be independently formed as a separate piece and may then either be received between a first piece 1422 and a second piece 1424 (e.g., see FIGS. 10A and 108) or, alternatively, be inserted into an optionally monolithic hollow cartridge housing configured to receive the manifold 1313 from an open end (see

Fig. 10C, 100, 118, 13, 16C, 17A, 22).

Referring to Fig. 10A-43B, various implementations are disclosed in which the manifold 1313 may be used, designed, made, manufactured, constructed in whole or in part independently of the cartridge body 1320. It should be noted that the disclosed embodiments are presented by way of example. In alternative implementations or variants, the manifold 1313 may be configured as shown in Fig. 10A-14B to have a design that is, at least structurally, partially dependent or completely independent of the design of the other components of the cartridge 130.

In some interchangeable implementations, different embodiments or types of collector 1313, as shown in Fig. 10A-14B, may be inserted or encapsulated, for example, in a standardized cartridge housing 1320. As described in more detail herein, since some of the basic functionality for controlling the flow of vaporized material 1302 in cartridge 1320 may be implemented by manipulating the structure 1313 or material properties of the collector, cost savings and other beneficial results and advantages may be obtained from a design that allows for the use of interchangeable models of collector 1313 that may fit, for example, different cartridge housings.

As shown in Fig. 10C and 100, for example, in some embodiments, instead of the separable two-piece construction shown in Fig. 10A and 108, the cartridge 1320 may have a cartridge body formed by a monolithic hollow structure having a first end and a second end. The first end (i.e., the first end, also referred to as the receiving end of the cartridge body) may be configured to receive by insertion at least a manifold 1313. In one embodiment, the second end of the cartridge body may act as a mouthpiece with an orifice or diaphragm (calibrated orifice). An aperture or diaphragm may be located opposite the receiving end of the cartridge body, where the manifold 1313 may be inserted. In some embodiments, the aperture may communicate with the receiving end by an airflow channel 1338, which may extend, for example, through the cartridge body 1320 and the manifold 1313. As in other cartridge embodiments consistent with this disclosure, an atomizer, for example, one that includes a wick element and a heating element as discussed herein, may be located adjacent to or at least partially within the airflow channel 1338, such that liquid vaporizable material in an inhalable form, or optionally as a precursor to an inhalable form, may be emitted from the atomizer into the air passing through the airflow channel 1338 toward the aperture or diaphragm.

Air exchange port implementation options

Fig. 11A and 118 show illustrative planar side views of a single-port single-channel manifold 1313. In these exemplary embodiments, the port 1102 may be provided in an opening toward a first portion (e.g., upper portion) of the manifold 1313, where the manifold 1313 is in contact with or communicates with a reservoir storage chamber 1340 (see also

Fig. 3A and 3B, described previously). The shutter 1102 can dynamically connect the storage chamber 1342 to the overflow volume 1344 formed by the second portion (e.g., the middle portion) of the manifold 1313.

In one embodiment, the second portion of the manifold 1313 may have a ribbed or multi-ribbed structure that forms an overflow channel 1104 that spirals, tapers, or slopes from the shutter 1102 toward the air exchange port 1106, as shown in Fig. 11A, to conduct or cause the vaporized material 1302 to move toward the air exchange port 1106 after the vaporized material 1302 enters the overflow volume 1344 through the shutter 110. The air exchange port 1106 may be connected to the ambient air by an air channel or airflow channel that is connected to the mouthpiece. This air channel or airflow channel is not explicitly shown in Fig. 11A.

In some implementations, the manifold 1313 is configured to have a central opening or tunnel through which an airflow channel is implemented that leads to the mouthpiece, as described in more detail below (e.g., see opening designated by reference numeral 1100 in FIG. 110 ).

The air flow channel may be connected to the air exchange port 1106 such that the volume within the overflow channel of the manifold 1313 communicates with ambient air through the air exchange port 1106 and also communicates with the volume in the storage chamber 1342 through the shutter 1102. In essence, according to one or more embodiments, the shutter 1102 may be used as a control fluid (hydraulic) valve to primarily control the flow of fluid and air between the overflow volume 1344 and the storage chamber 1342. The air exchange port 1106 may be used primarily to control the flow of air (and, if desired, the flow of liquid), for example, between the overflow volume 1344 and the air channel leading to the mouthpiece. The overflow channel 1104 may be diagonal, vertical, or horizontal relative to the elongated body of the cartridge 130.

The evaporable material 1302, when filling the cartridge 1320, may have at least a primary interface with the manifold 1313 via the shutter 110. This is because the primary interface between the evaporable material 1302 and the shutter 1102 may, for example, prevent air trapped in the overflow channel 1104 from entering the portion of the cartridge where the evaporable material 1302 is stored (e.g., the storage chamber 1342). In addition, such an interface may initiate a first capillary interaction between the evaporable material 1302 and the walls of the overflow channel 1104 at equilibrium to allow a limited amount of the evaporable material 1302 to flow into the overflow channel 1104 to achieve or maintain an equilibrium state.

The equilibrium state refers to a state in which the evaporated material 1302 does not flow into or out of the overflow volume 1344, or a state in which such forward or reverse flows are negligibly small.

In at least some embodiments, the capillary action (or interaction) between the walls of the overflow channel 1104 and the vaporized material 1302 is such that an equilibrium state can be maintained when the cartridge 1320 is in a first pressure state, where the pressure within the storage chamber 1342 is approximately equal to ambient pressure.

The establishment of an equilibrium state and subsequent capillary interaction between the evaporated material 1302 and the walls of the overflow channel 1104 can be established or configured by adapting or adjusting the volumetric size of the overflow channel 1104 along the length of the channel. As described in more detail herein, the diameter (which is used herein to refer generally to the cross-sectional area of the overflow channel 1104, including embodiments of the claimed subject matter in which the overflow channel does not have a circular cross-section) of the overflow channel 1104 may be tapered at predetermined intervals either at points or along the entire length of the entire channel to provide a sufficiently strong capillary interaction that provides for forward and reverse flows of the vaporized material 1302 to/from the collector 1313, depending on pressure changes, and, in addition, to provide a large total volume of the overflow channel, while maintaining barrier points to form a meniscus to prevent air from flowing past the liquid in the overflow channel 110.

As described in more detail herein, the diameter of the overflow channel 1104 may be sufficiently small or narrow such that the combination of surface tension caused by cohesion in the vaporized material 1302 and wetting forces between the vaporized material 1302 and the walls of the overflow channel 1104 may act to cause the formation of a meniscus that separates the liquid from the air in a direction transverse to the axis of flow in the overflow channel 1104, such that the air and liquid cannot pass relative to each other. It should be understood that menisci have their own curvature, so that reference to a dimension transverse to the direction of flow is not intended to imply that the air-liquid interface is flat in this or any other dimension.

The wick element 1362 may be in thermal or thermodynamic connection with the heating element 1350 (see, for example, FIGS. 3B and 118) to cause vapor formation upon heating of the vaporizable material 1302, as described in detail above with reference to FIGS. 3A and 3B.

Alternatively, the air exchange port 1106 may be designed to provide a gas release path but prevent the flow of vaporized material 1302 from the overflow channel 110.

As shown in FIG. 11A and 118, the forward or reverse flow of the evaporative material 1302 in the manifold 1313 can be controlled (e.g., increased or decreased) by implementing appropriate structures (e.g., microchannel configurations) to introduce or take advantage of capillary properties that may exist between the evaporative material 1302 and the retaining walls of the overflow channel 110. For example, factors related to the length, diameter, internal surface texture (e.g., rough or smooth), protrusions, directional narrowing of the channel structures, restrictions, or the material used to create or cover the surface of the shutter 1102, overflow channel 1104, or air exchange port 1106 can positively or negatively affect the rate at which liquid is drawn into or moves through the overflow channel 1104 by capillary action. action or other influencing forces acting on the cartridge 130.

One or more of the factors noted above, depending on the implementation, may be used to control the movement of the vaporized material 1302 in the overflow channel 1104 to provide the desired degree of reversibility as the vaporized material 1302 collects in the channel structures of the collector 1313. In fact, in some embodiments, the flow of the vaporized material 1302 into the collector 1313 may be fully reversible or partially reversible by selectively controlling the various factors noted above and depending on changes in the pressure condition inside or outside the cartridge 130.

As shown in Fig. 3A, 3B, 11A and 118, in one or more embodiments, the manifold 1313 may be formed, designed or constructed to have a single channel structure with a single outlet. In such embodiments, the overflow channel 1104 may be a continuous passage, tube, channel or other structure for connecting the shutter 1102 to an air exchange port 1106, optionally located adjacent to the wick element 1362 (for example, see also Fig. 3A and 3B, which show a single elongated overflow channel 1104 in the overflow volume 1344). Accordingly, in such embodiments, the evaporative material 1302 may enter or leave the collector 1313 from the shutter 1102 and through a separately created channel, where the evaporative material 1302 flows in a first direction when the collector 1313 is filling and in a second direction when the collector 1313 is draining.

To help maintain an equilibrium state or, depending on the implementation, control the flow of vaporized material 1302 in the overflow channel 1104, the shape and structural configuration of the overflow channel 1104, the valve 1102, or the air exchange port 1106 can be adapted or modified to balance the flow rate of vaporized material 1302 in the overflow channel 1104 at different pressure conditions. In one example, the overflow channel 1104 can be tapered such that the tapered end (i.e., the end with the smaller opening or diameter) leads to the valve 110.

In one implementation, the untapered end (i.e., the end of the overflow channel 1104 with the larger opening or diameter) may lead to an air exchange port 1106, which may be connected to the environment outside the cartridge 1320 or to an air channel from which the vaporized evaporative material 1302 is supplied to the mouthpiece (see, for example, FIG. 3A, air outlet 1318 connected to air flow channel 1338). In one embodiment, the untapered end may also lead to a region near the wick body, such that if the evaporative material 1302 exits the overflow channel 1104, the evaporative material 1302 may be used to saturate the wick element 1362.

The tapered channel structure, depending on the implementation, can reduce or increase the flow restriction into the manifold 1313. For example, in an embodiment where the overflow channel 1104 tapers toward the gate 1102, a corresponding capillary pressure in the reverse flow direction is induced in the overflow channel 1104, such that the flow direction of the vaporized material 1302 out of the manifold 1313 and into the storage chamber 1342 is established when the pressure condition changes (e.g., when the negative pressure event is removed or disappears). In particular, implementing the overflow channel 1104 with a smaller opening may prevent the free flow of the vaporized material 1302 into the manifold 1313. The unconstricted configuration of the overflow channel 1104 in the direction leading to the air exchange port 1106 provides for efficient storage of the vaporized material 1302 in the manifold 1313 during the second pressure state (e.g., a negative pressure state) when the vaporized material 1302 flows into the manifold 1313 from the narrower sections of the overflow channel 1104 into the increased volume sections of the overflow channel 110.

In essence, the diameter and shape of the collector structure 1313 can be implemented such that the flow of vaporized material 1302 through the gate 1102 and into the overflow channel 1104 is regulated at a desired rate during a second pressure state (e.g., at negative pressure) to prevent vaporized material 1302 from flowing too freely (e.g., exceeding a certain flow rate or threshold) into the collector 1313, and to direct the reverse flow back into the storage chamber 1342 during a first pressure state (e.g., when the negative pressure is reduced). It should be noted that the combination of interactions between the outlet 1002, the overflow channel 1104 in the manifold 1313, which constitute the overflow volume 1344, and the air exchange port 1106, in one embodiment, provides for proper venting of air bubbles that may be introduced into the cartridge due to various environmental factors, as well as a controlled flow of vaporized material 1302 into and out of the overflow channel 110.

Mouthpiece implementation options

Referring to Fig. 118 (also see Figs. 10C, 100), in some embodiments, the portion of the cartridge 1320 that includes the storage chamber 1342 may be configured to also include a mouthpiece that may be used by a user to inhale the vaporized vaporizable material 1302. An airflow channel 1338 may extend through the storage chamber 1342, thereby connecting the vaporization chamber. Depending on the implementation, the airflow channel 1338 may be, for example, a straw-shaped or hollow cylinder-shaped structure that forms a channel within the storage chamber 1340 to allow the passage of the vaporized vaporizable material 1302. While the airflow channel may have a circular or at least approximately circular cross-sectional shape, it should be understood that other cross-sectional shapes for the airflow channel are also within the scope of this disclosure.

The first end of the airflow channel 1338 may be connected to an opening at the first “mouthpiece” end of the storage chamber 1342 from which a user may inhale the vaporized vaporizable material 1302. The second end of the airflow channel 1338 (opposite the first end) may be inserted into an opening at the first end of the manifold 1313, as described in more detail below. Depending on the implementation, the second end of the airflow channel 1338 may extend completely or partially through a receiving cavity that extends through the manifold 1313 and connects to a wick housing where a wick element 1362 may be disposed.

In some configurations, the airflow channel 1338 may be an integral part of a monolithically molded mouthpiece that includes a storage chamber 1342, where the airflow channel 1338 extends through the storage chamber 1342. In other configurations, the airflow channel 1338 may be an independent structure that may be separately inserted into the storage chamber 1342. In some configurations, the airflow channel 1338 may be a structural extension of the manifold 1313 or cartridge housing 1320, located inwardly, for example, from an opening in the mouthpiece portion.

Without limitation, a variety of different structural configurations are possible for connecting the mouthpiece (and the airflow channel 1338 internal to the mouthpiece) to the air exchange port 1106 in the manifold 1313. As contemplated herein, the manifold 1313 may be inserted into a cartridge housing 1320, which may also act as a storage chamber 1342. In some implementations, the airflow channel 1338 may be formed as an internal sleeve that is integral with the monolithic cartridge housing, such that an opening at the first end of the manifold 1313 may receive the first end of a sleeve structure that creates the airflow channel 13386.

As shown in Fig. 18A-18O0, some embodiments may include a vaporizer cartridge 1800 that includes a dual mouthpiece 1830 connected to two airflow channels 1838. In such embodiments, a higher dose of vaporized evaporative material 1302 may be delivered compared to a single mouthpiece. The dual mouthpiece 1830, depending on the implementation, may also advantageously provide a smoother and more satisfying vaping experience.

Fluid gate implementation options

With reference to Fig. 10A-11H, depending on the implementation, various factors may be taken into account to facilitate control and regulation of the forward and reverse flows of the evaporated material 1302 into and out of the collector 1313. Some of these factors may include the configuration of the capillary action of the liquid outlet, referred to herein as the shutter 1102. The capillary action of the shutter 1102 may be, for example, less than the capillary action of the wick element 1362. In addition, the flow resistance of the manifold 1313 may be greater than that of the wick element 1362. The overflow channel 1104 may have smooth or corrugated internal surfaces to regulate the flow rate (flow) of the vaporized material 1302 through the manifold 1313. The overflow channel 1104 may be configured with a conical curvature to provide proper capillary interaction and forces that limit the flow rate through the shutter 1102 and into the overflow volume 1344 during a first pressure state to provide a reverse flow rate through the shutter 1102 and out of the overflow volume 1344 in a second pressure state. under pressure

Additional modifications to the shape and structure of the components of the manifold 1313 may be possible to further regulate or fine-tune the flow of the vaporized material 1302 into and out of the manifold 1313. For example, a smoothly curved spiral channel configuration (i.e., as opposed to a channel with sharp turns or edges), as shown in Figs. 11A-11H, may allow for additional features, such as one or more outlets, channels, apertures, or tapered structures, included in the manifold 1313 at predetermined intervals along the overflow channel 1104. As provided in more detail herein, such additional features, structures, or configurations may assist in providing a higher level of flow control for the vaporized material 1302 along the overflow channel 1104 or, for example, through the gate 1102.

It should be noted that, regardless of the various structural elements and implementations described in this disclosure, certain features and functionalities (e.g., capillary interaction between various components) may be implemented in the manifold structure 1313 to facilitate regulation of the flow of the vaporized material 1302, for example, through (1) single-channel structures with a single outlet, (2) multi-channel structures with a single outlet, or (3) multi-channel structures with multiple outlets.

Referring to Fig. 10E, 11A, 11C, 10 and 11E, exemplary structural configurations of a collector 1313 are shown in accordance with some embodiments. As shown, a fully or partially inclined spiral surface may be implemented to define one or more sides of the interior volume of the overflow channel 1104 of the collector 1313, such that the vaporized material 1302 may flow freely as a result of capillary pressure (or gravity) through the overflow channel 1104 when the vaporized material 1302 enters the overflow channel 1104. One or more, optionally central, channels or tunnels, such as a central tunnel 1100, may be formed through the longitudinal height of the collector 1313 having two opposite ends.

At a first end, the central shaft or central tunnel 1100 may communicate or connect through a manifold structure 1313 to a portion of the housing in which a wick element 1362 or atomizer may be located. At a second end, the central tunnel 1100 may communicate, connect or receive one end of a channel or tube that forms an airflow channel 1338 in the mouthpiece portion of the cartridge 130. The first end of the airflow channel 1338 may connect (e.g., by insertion) to a second end of the central tunnel 1100.

The second end of the air flow channel 1338 may include an opening or diaphragm formed in the mouthpiece area.

According to one or more embodiments, the vaporized vapor material 1302 generated by the atomizer may pass through a first end of the central tunnel 1100 in the manifold 1313, pass through the central tunnel 1100, and then exit from a second end of the central tunnel 1100 into a first end of the airflow channel 1338. The vaporized vapor material 1302 may then pass through the airflow channel 1338 and exit through a mouthpiece opening formed at the second end of the airflow channel 1338.

The manifold 1313 may be formed as a separate piece with a structure or structure that can be inserted into the cartridge housing 1320 (see, for example, FIGS. 10C, 118, 11C-11EE). Once inserted, an airtight seal may be formed between the inner walls of the cartridge housing 1320 and the outer edges of the rib structure of the manifold 1313, which forms a spiral inclined surface. In other words, the three walls of the overflow channel 1104, closed by the surface of the inner walls of the cartridge housing 1320, form the overflow channel 1104 after the manifold 1313 is inserted into the cartridge housing 130.

Accordingly, the overflow channel 1104 may be formed by the inner walls of the cartridge body 1320 accommodating the inner walls of the rib structure. As shown in the drawing, a shutter 1102 may be located at one end of the overflow channel 1104 in the direction of where the storage chamber 1342 is located to regulate and provide the entry and exit of the vaporized material 1302 in the overflow channel 1104 in the collector 1313. An air exchange port 1106 may be located in the direction of the other end of the overflow channel 1104, preferably opposite the end where the shutter 1102 is located.

The shutter 1102 may regulate the flow of evaporative material 1302 into/out of the overflow channel 1104 in the manifold 1313. The air exchange port 1106 may, via a connecting path to the outside air, regulate the flow of air into/out of the overflow channel 1104 to regulate the air pressure in the manifold 1313 and, in turn, in the storage chamber 1340 of the cartridge 1320, as described in more detail below. In some embodiments, the air exchange port 1106 may be configured to prevent the escape of evaporative material 1302, which may fill the overflow channel 1104 (e.g., as a result of negative pressure), from the overflow channel 110.

In some implementations, the air exchange port 1106 may be configured to force the vaporized material 1302 to exit in a direction that leads to the area where the wick element 1362 is located. This implementation may help prevent the vaporized material 1302 from leaking into the airflow channel (e.g., the central tunnel 1100) that leads to the mouthpiece, such as during a negative pressure event. In some implementations, the air exchange port 1106 may have a membrane that allows the entry and exit of gaseous material (e.g., air bubbles) but prevents the vaporized material 1302 from entering or exiting the manifold 1313 through the air exchange port 110.

As shown in Fig. 11C-11H, the flow rate of vaporized material 1302 into/out of collector 1313 through gate 1102 can be directly related to the bulk pressure within overflow channel 104.

Thus, the flow rate into/out of the manifold 1313 through the gate 1102 can be controlled by manipulating the hydraulic diameter of the overflow channel 1104 such that reducing the total volume of the overflow channel 1104 (e.g., either uniformly or by introducing multiple constriction points) can result in increased pressure in the overflow channel 1104 and control the flow rate into the manifold 1313. Accordingly, in at least one implementation, the hydraulic diameter of the overflow channel 1104 can be reduced (e.g., tapered, pinched, compressed, or restricted) either uniformly or by introducing one or more constriction points 1111 along the length of the helical path of the overflow channel 110.

In Fig. 11C-11E, by way of example, two partial length levels and three full length levels are shown, formed on one or more sides of the manifold 1313, each full length level on the side shown in the drawings having, for example, three constriction points 1111a. It should be noted that, in various implementations, more or fewer constriction levels or points 1111a may be implemented, defined, constructed, or introduced to regulate the volume pressure in the manifold 1313. The constriction point 1111a, for illustrative purposes, is circled for clarity at the mid-level of the manifold 1313.

The constriction points 1111a may be formed or introduced along the length of the overflow channel 1104 in a variety of ways and shapes. Exemplary embodiments with various constriction points or shapes are described below to better illustrate certain features. It should be noted, however, that these exemplary embodiments should not be construed as limiting the scope of the claimed subject matter to any particular configuration or shape.

Referring to Fig. 11C, in one exemplary implementation, the constriction point 1111a may be formed by protrusions, raised edges, raised portions or projections (hereinafter referred to as projections) extending from the top or bottom or side wall (or any or all of such) surfaces of the overflow channel 1104 (i.e., the collector plates 1313). The shape of the projections may be defined as a bulge, finger, tooth, rib, edge or any other shape that limits the cross-sectional area across the direction of flow in the overflow channel. In the image of Fig. 11C, the side cross-sectional view of the projection is shown to be similar to the shape of a shark fin, for example, where the distal end of the projections is beveled to the edge.

As shown in Fig. 11C, the pointed or cantilevered edge of the shark fin shape may be rounded. In other embodiments, however, the cantilevered edge may be beveled to a sharp end. The sharpness, size, relative location, and frequency of the protrusions in the overflow channel 1104 may be manipulated to further fine-tune the liquid-air separation meniscus formed in the overflow channel 110.

For example, as shown in Fig. 11C, the protrusions may have a rounded surface on one side and a flat surface on the opposite side. The rounded surface of the protrusions may be turned (i.e., directed sideways) toward the outlet flow of vaporized material 1302 (i.e., flow from the collector 1313 and into the storage chamber 1342), while the flat surface of the protrusions may be turned toward the inlet flow of vaporized material 1302 (i.e., flow into the collector 1313 and out of the storage chamber 1342) through the shutter 110.

As indicated, in various implementations, the formation of protrusions along the overflow channel 1104 can be manipulated in number, size, shape, location, and frequency to fine-tune the hydraulic flow rate of the evaporated material 1302 into/out of the manifold 1313. For example, if it is desired instead to maintain the inlet flow in the overflow channel 1104 at a higher velocity than the outlet flow, then the protrusions can have a flat surface facing the outlet flow and a rounded surface facing the inlet flow to facilitate the formation and retention of a meniscus opposing the outlet flow of fluid (e.g., from the storage chamber 1340), allowing the meniscus to more easily release from the side of the protrusion facing back toward the storage chamber 1340.

Thus, a series of such protrusions can function as a kind of "hydraulic ratchet" system, in which the return flow of fluid into the storage chamber is microfluidically stimulated relative to the outflow from the storage chamber. This effect may be achieved, at least in part, by the relative tendency of the meniscus to break on the side of the protrusions of the storage chamber, rather than on the opposite side.

As shown in Fig. 11C, in one exemplary implementation, in addition to (or instead of) protrusions extending from the bottom or top of the overflow channel 1104, some protrusions may extend from the inner walls of the overflow channel 110. As shown more clearly in Fig. 11P, a protrusion may extend from the inner wall of the overflow channel 1104 at the same constriction point 1111a, where two additional protrusions extend from the bottom and top of the overflow channel 1104 to form a C-shaped constriction point 1111a. The exemplary implementation illustrated in Figs. 110 and 11E may more effectively tune the microfluidic properties of the overflow channel 1104 to facilitate the entrainment of fluid flow into the storage chamber 1340, relative to the implementation of Fig. 11C, since the hydraulic diameter of the overflow channel 1104 is more restricted (i.e., narrowed) at the narrowing point 1111a shown in

Fig. 110 and 115.

The protrusions formed along the overflow channel 1104 do not necessarily have to be the same in shape, size, frequency, or symmetry. That is, depending on the implementation, the different constriction points 1111a or 11116 may be implemented in different sizes, designs, shapes, locations, or frequencies along the overflow channel 1104. In one example, the shape of the constriction point 1111a or 111165 may be similar to the shape of the letter C with a circular inner diameter. In some embodiments, instead of forming the inner diameter in the form of a rounded C-shape, the inner wall of the constriction point may have angles (e.g., acute angles), as shown in Fig. 116 and 1106.

In some examples, the overflow channel 1104, at the first level, may have protrusions extending from the top of the overflow channel 1104, while at the second level, the protrusions may extend from the bottom of the overflow channel 1104. At the third level, the protrusions may extend, for example, from the inner walls. Alternatives to the above implementations are possible by adjusting or varying the number of protrusions and the shapes of the protrusions or positioning the protrusions in different sequences or levels to facilitate the microfluidic effect in the flow in two directions in the overflow channel 1104. In one example, the constriction points 1111a may be implemented at one or more (or all) levels, sides or width of the collector 1313, for example, at one or more (or all) levels, sides or width of the collector 1313.

As shown in Fig. 11E and 110, in addition to defining constriction points 1111a along the longer length of the overflow channel 1104 or the wider side of the manifold 1313, one or more additional constriction points 1116 may be defined along the narrower side of the manifold 1313. As such, the exemplary implementation shown in Fig. 11E and 115 may improve drag control or facilitate meniscus separation in the desired direction in the overflow channel 1104 compared to the implementation in Fig. 110 because the overall hydraulic diameter (or flow volume) of the overflow channel 1104 is more narrowed due to the addition of additional constriction points 11116.

As shown in Fig. 11E and 110, for clarity, each full level in the illustrated example may include three constriction points 1111a on each side, for example, in addition to two more constriction points 11116. Thus, the manifold 1313 in Fig. 110 may include a total of 18 constriction points, while the manifold 1313 in Fig. 11E may include a total of 26 constriction points. In this example, the embodiments illustrated in Fig. 11E provide improved control of microfluidic flow (e.g., in an outward direction) by increasing capillary pressure at a plurality of points 1111a and 11116.

Referring to Fig. 11H, in some embodiments, the shutter 1102 may be designed to include an aperture or opening configuration that, like the constriction point 1111a or 11110, has a tapered edge, rim, or flange that is flatter in one direction. For example, the aperture edge of the shutter 1102 may be flat on one side (e.g., the side facing the storage chamber 1342) and rounded on the other side (e.g., the side facing away from the storage chamber 1342). In such a configuration, the microfluidic forces that favor reverse flow toward the storage chamber 1340, compared to flow out of the storage chamber 1340, may be enhanced by the meniscus on the less rounded side being more easily separated from the more rounded side.

Accordingly, depending on the implementation and variations in the structure or design of the constriction points and the shutter 1102, the resistance to the flow of the vaporized material 1302 from the collector 1313 may be higher than the resistance to the flow of the vaporized material 1302 into the collector 1313 and into the storage chamber 1340. In some implementations, the shutter 1102 is designed to maintain a liquid seal such that a layer of the vaporized material 1302 is present in the environment where the storage chamber 1342 communicates with the overflow channel 1104 in the overflow volume 1344. The presence of the liquid seal may help maintain a pressure equilibrium between the storage chamber 1342 and the overflow volume 1344 to provide a sufficient level of vacuum (e.g., a partial vacuum) in the storage chamber 1342, preventing complete impregnation of the evaporated material 1302 into the overflow volume 1344, and also avoiding that the wick element 1362 will be deprived of adequate saturation.

In one or more exemplary implementations, one passage or channel in the manifold 1313 may be connected to the storage chamber 1342 by two outlets, such that the two outlets maintain a fluid seal regardless of the location of the cartridge 1320.

Forming a liquid seal on the shutter 1102 can also help prevent air in the manifold 1313 from entering the storage chamber 1342, even when the cartridge 1320 is held diagonally relative to the horizontal, or when the cartridge 1320 is positioned with the mouthpiece facing down.

This is because if air bubbles from the manifold 1313 enter the reservoir, the pressure inside the storage chamber 1342 will be equalized to the ambient pressure. That is, a partial vacuum inside the storage chamber 1342 (e.g., created by the permeation of the vaporized material 1302 through the wick feed 1368) will be compensated for if ambient air flows into the storage chamber 1342.

Referring to Fig. 11I-11K, perspective views of alternative configurations of the shutter 1102 for the collector structure 1313 are shown. These alternative configurations may provide advantages in controlling and regulating the flow of air and/or liquid evaporative material 1302. In some scenarios, the vacuum in the headspace may not be maintained when the void space (i.e., the void space above the evaporative material 1302) in the storage chamber 1342 contacts the shutter 1102. As a result, as previously noted, the liquid seal formed on the shutter 1102 may be disrupted. This effect may be due to the shutter 1102 being unable to maintain a liquid film when the collector 1313 is emptied and the void space contacts the shutter 1102, resulting in a loss of partial vacuum in the headspace.

In some implementations, the headspace in the storage chamber 1342 may be at ambient pressure, and if there is hydrostatic pressure between the valve 1102 and the atomizer in the cartridge 1320, the contents of the storage chamber 1342 will flow into the atomizer, causing the wick housing to flood and leak. To avoid leakage, one or more embodiments may be implemented to eliminate the hydrostatic pressure between the valve 1102 and the atomizer and maintain the functionality of the valve 1102 when the storage chamber 1342 is nearly empty.

As shown in the exemplary embodiments of FIG. 111 (11), miniature labyrinth-like partition walls or structures 1190 can be designed around the gate 1102 to create a high-conductivity (high capillary action) connection between the gate 1102 and the bypass channel 1104 in the manifold 1313 to maintain a fluid seal on the gate 110. In the example of FIG.

Fig. 11) shows a groove-shaped structure 1190 as a means for further improving fluid seal maintenance on the gate 1102 according to one or more implementations.

Variants of implementing a controlled fluidic gate

Fig. 111-11M show planar and enlarged views of a controlled fluidic gate 1102 within a manifold structure 1313, according to one or more embodiments. As shown, a passage or overflow channel 1104 in the manifold 1313 may be connected to a storage chamber 1342 by an M-shaped or horn-shaped controlled fluidic gate 1102, for example, such that the M-shaped gate 1102 includes at least two (and preferably three) openings that communicate with the storage chamber 1342. As described in more detail herein, a fluid seal may be maintained on the gate 1102 regardless of the vertical or horizontal orientation of the cartridge 1320.

As shown in Fig. 11H, on the first side of the outlet, between the overflow channel 1104 and the gate 1102, an outlet channel 1121 may be maintained through which air bubbles may escape from the overflow channel 1104 in the manifold into the reservoir. On the second side, one or more high capillary action channels 1123 connected to the reservoir may be implemented to facilitate separation at the cutoff point 1122 to maintain a fluid seal that prevents premature release of air bubbles from the overflow channel 1104 and into the reservoir, as well as the undesired introduction of air or vaporized material 1302 into the overflow channel 1104 from the reservoir.

Depending on the implementation, high capillary action channels, shown as an example on the right side

Fig. 11, are preferably maintained sealed by capillary pressure generated by the liquid evaporative material 1302 in the cartridge reservoir. The low-lead (low capillary action) channels formed on the opposite side (i.e., shown on the left side in Fig. 113, can be made to have a relatively lower capillary action compared to the high capillary action channels, but still have sufficient capillary action such that in the first pressure state, a liquid seal is maintained in both the high capillary action channels and the low capillary action channels.

Accordingly, in a first pressure state (e.g., when the pressure inside the tank is approximately equal to or greater than the ambient air pressure), a liquid seal is maintained in both the low capillary action channels and the high capillary action channels, preventing any air bubbles from entering the tank. In contrast, in a second pressure state (e.g., when the pressure inside the tank is less than the ambient air pressure), air bubbles formed in the overflow channel 1104 (e.g., by entry through the air exchange port 1106), or more generally, the leading edge of the meniscus of the liquid vaporized material-air interface can move upward and toward the controlled fluidic gate 1102.

When the meniscus reaches the cutoff point 1122 located between the low capillary action channels and the high capillary action channels of the outlet 1104, the air is preferentially directed through the low capillary action channel or channels due to the higher capillary resistance present in the high capillary action channel(s).

Once the air bubbles have passed through the low capillary action channel portion of the valve 1102, the air bubbles enter the reservoir and equalize the pressure inside the reservoir with the ambient air pressure. Essentially, the air exchange port 1106 in combination with the controlled fluid valve 1102 allows ambient air to enter the reservoir through the overflow channel 1104 until a pressure equilibrium condition is established between the reservoir and the ambient air. As previously indicated, this process may be referred to as venting the reservoir. Once a pressure equilibrium condition is established (e.g., a transition from the second pressure state back to the first pressure state), a liquid seal is re-established at the cutoff point 1122 due to the presence of liquid in both the high capillary action channels and the low capillary action channels into which the liquid evaporative material 1302 stored in the reservoir is supplied.

Fig. 110-11X shows snapshots over time as the air flow collected in the exemplary manifold 1313 according to Fig. 111-11M is controlled to ensure proper ventilation as the meniscus of the evaporated material 1302 continues to settle.

Fig. 110 shows a settling meniscus where, as the vaporized material 1302 is removed from the reservoir into the wick, the partial vacuum in the headspace increases in intensity. This is sufficient to overcome the capillary action of the sinking meniscus, moving the meniscus back through the manifold to the constriction point where the meniscus will be subjected to the highest pressure drop as dictated by the geometry.

Fig. 11P illustrates how the meniscus crosses the first junction in the gate 1102 as the meniscus approaches the gate 1102. At this first junction, the partial vacuum in the free space is maximized because it corresponds to the smallest geometry in the gate structure 1102, and the partial vacuum in the reservoir continues to increase to this point.

Fig. 110 illustrates how a plurality of menisci in free space descend as the free space reaches its maximum partial vacuum. The menisci are at their most stressed (stretched) curvature along their major planes, and at these pressure locations the three channel outputs are equal, and the three menisci descend simultaneously, as opposed to just one channel. As the curvature of these menisci now increases as they descend, the pressure difference maintained across them decreases, and the partial vacuum in free space thus begins to decrease.

Fig. 11K illustrates how the secondary menisci begin to fill the capillary channels. The tapers (narrowings) in the geometry of these channels are such that as the menisci continue to descend, the capillary action of the primary channel decreases at a faster rate than in the secondary channels. This gradual decrease in capillary action will reduce the partial vacuum maintained in the headspace.

When the leakage pressure of the primary meniscus falls below the leakage pressure of the secondary channels, that meniscus will continue to drain while the other menisci remain static. The drain pressure, which results in a receding wetting angle of the primary channel, can fall below the flooding pressure, which results in an advancing wetting angle of the secondary channels, causing them to refill, as shown in the figures.

Fig. 115 shows how the secondary menisci from one of the two menisci in each secondary channel will reach a point of contact where the two menisci merge to become one. This combined menisci will have an increased curvature and thus a lower capillary action. The higher drive (capillary action) of the primary menisci may cause an instantaneous reaction of the system, making the primary menisci the rising menisci. Further lowering of the primary menisci will likely occur with the secondary menisci held in this position.

Fig. 117 shows how the secondary meniscus moves towards the collector. In the scenario where the storage chamber is filled with liquid, the primary meniscus will continue to retreat (fall), further reducing the partial vacuum in the headspace as its curvature increases. As the partial vacuum drops below the increasing capillary pressure of the secondary meniscus, the secondary meniscus will begin to pass again, causing the gap to close. In the scenario where the storage chamber is empty or nearly empty, the liquid seal at the gate 1102 will be stable until the bubble collapses, connecting the headspace to the environment.

Fig. 11) shows how the secondary meniscus closes the junction at the gate 110. As the secondary meniscus will advance until it meets the apex of the angle in the primary channel, the geometry is designed to facilitate the separation of the secondary meniscus to fill both the gate 1102 and the collector channels 1313. These two newly formed menisci can act to isolate the headspace from the ambient air, and thus a partial vacuum in the headspace can be reestablished, ensuring that leakage through the fluid supply channels 3203 is reduced. Since the newly formed menisci have a smaller curvature than before separation, the newly formed menisci will continue to move into the channels due to increased capillary action.

Fig. 11M-11X illustrate the release of a bubble into the storage chamber 1342. The pressure inside the cartridge 1320 at this point reaches stability as the air bubble trapped in the main meniscus channel is pushed out by the imbalance created by the meniscus advancing and falling. The evaporated material 1302 then has the opportunity to enter and move the bubble in the upper right channel. Accordingly, although the structure of the high-drive (with high capillary action) channel can be provided by a closed groove near the gate 1102, a shorter groove can be used instead to reduce the risk of bubble trapping.

In some embodiments, the tapered channels may be designed to increase capillary action toward the controlled outlet. Given the cutoff of the two advancing menisci, the tank wall and channel bottom may be designed to continue to provide capillary action, while the side walls provide a cutoff location for the menisci. In one configuration, the total capillary action of the advancing menisci does not exceed that of the descending menisci, thus maintaining the system statically stable.

Variants of implementing a multi-channel manifold with multiple gates

Fig. 12A and 128 show exemplary side perspective views and exemplary side plan views of embodiments of a multi-channel manifold structure 1200 with a single outlet. As shown in Fig. 12A, the manifold 1200 is formed to have a single gate 1202 and a plurality of channels 1204(a)-1204(b). As shown in Fig. 12A, in accordance with one or more implementations, the gate 1202 may be positioned, for example, at a central or midpoint of the longitudinal width of the manifold 1313 to allow vaporized material 1302 to enter at least the first channel 1204(a) of the manifold 1313 and gradually spread inward and through additional channels 1204(b)-1204(c).

The position of the shutter 1202 can be modified depending on the implementation to be in the middle, on the side or in a corner or any other location along the length or width of the collector 1313.

The structure of the multi-channel manifold 1200 with a single outlet may have the additional advantage that the vaporized material 1302 may enter through a single port 1202 at a first flow rate and propagate at a second flow rate (e.g., a higher rate than the first rate) through the plurality of channels 1204(a)-1204(|) of the manifold 120.

Preferably, the single-gate multi-channel manifold 1200 structure provides for a controlled flow (e.g., a restricted flow) of evaporable material 1302 from the storage chamber 1342 to the overflow volume 1344 (see FIG. 3A) and further provides for a less controlled (e.g., less restricted) flow when the evaporable material 1302 is in the overflow volume 1344. In some embodiments, a multi-tiered multi-channel structure may be implemented, such that, as shown in FIG. 12B, for example, the flow of evaporable material 1302 in the first set of channels 1204(a)-1204(j) has a second velocity and the flow of evaporable material 1302 in the second set of channels 1204(9)-1204(K) has a third velocity. The third speed can be higher or lower than the second speed.

Accordingly, in the exemplary embodiment shown in Fig. 128, the evaporable material 1302 may flow through the gate 1202 at a first rate, through the channels 1204(a)-1204(8) at a second rate, and through the channels 1204(9)-1204(K) at a third rate. In one or more embodiments, the second rate may be greater than the first rate and the third rate, for example, such that the evaporable material 1302 may have a restricted flow through the gate 1202, a less restricted flow through the first set of channels (e.g., tier 1), and a relatively more restricted flow in the second set of channels (e.g., tier 2). This multi-tiered configuration can help improve the flow rate through the manifold 1200, but maintain an adjustable restriction against the rapid flow of the vaporized material 1302 towards the wick element 1362, after the vaporized material 1302 has entered the manifold 1200.

In the two-tiered embodiment shown in Fig. 128, the first set of channels 1204(a)-1204(7) (e.g., tier 1) may have a reversible configuration such that the evaporative material 1302 collected in the first set of channels may flow back into the reservoir 1340. The second set of channels 1204(9)-1204(K) (e.g., tier 2), in contrast, may not have reversible configurations. In such embodiments, due to the proximity of the second set of channels to the wick element 1362, the evaporative material 1302 is primarily drawn from the second set of channels and then from the first set of channels (e.g., tier 1, which acts as a backup chamber). Having a reversible and non-reversible design, as discussed above, may help provide additional improvements over other embodiments discussed herein.

In some multi-tiered embodiments, by configuring the second set of channels 1204(9)-1204(K) as non-reversible, there may be additional assurance that the wick element 1362 will not be depleted because the evaporable material 1302 may be available in close proximity to the wick element 1362 as it accumulates in the second set of channels 1204(9)-1204(K) during an overflow event. Additionally, the possibility of a strong flow of evaporable material 1302 into the wick body during a negative pressure event may be prevented in multi-tiered implementations because, as previously provided, the second set of channels 1204(9)-1204(K) may be configured to have a more restricted flow compared to the first set of channels 1204(a)-1204(0).

Additionally, due to reversibility, the first set of channels 1204(a)-1204(H) may not contain a relatively large volume of evaporable material 1302. In some embodiments, to increase or limit the reversibility or flow of evaporable material 1302 in the first set of channels 1204(a)-1204(8) or the second set of channels 1204(9)-1204(K), a hygroscopic material (e.g., sponges) may be introduced into one or both portions of the channels.

Fig. 13 shows an exemplary side perspective view of a structure of a multi-channel manifold 1300 with multiple outlet openings, according to one or more embodiments. As shown, the manifold 1300 can be placed inside a cartridge such that the manifold 1300 has dual outlet openings 1301. This implementation allows the vaporized material 1302 to flow into the channels 1204 at a relatively higher rate, particularly compared to the single outlet manifold 1200 shown in Fig. 21A and 128.

Wick feeding options

Referring again to Fig. 10C, 100, 118, in some embodiments, the manifold 1313 may be configured to be inserted into the receiving end of the storage chamber 1342. The end of the manifold 1313 that is opposite the end that is received by the storage chamber 1340 may be configured to receive the wick element 136. For example, forked protrusions may be formed to securely receive the wick element 1362. The wick body 1315 may be used to further secure the wick element 1362 in a fixed position between the protrusions. This configuration may also help prevent the wick element 1362 from significantly swelling and weakening due to over-saturation.

As shown in Fig. 11C, 110 and 11E, depending on the implementation, one or more additional passages, channels, tubes or cavities that extend through the manifold 1313 and may be designed or formed as channels that feed the wick element 1362 with vaporized material 1302 stored in the storage chamber 1342. In some configurations, such as those discussed in more detail herein, the wick feed passages, tubes or cavities (i.e., wick feeds (feeders) 1368) may extend approximately parallel to the central tunnel 1100. In at least one configuration, there may be a plurality of wick feeds that extend diagonally along the length of the manifold 1313, for example, either independently or in conjunction with a wick change, including one or more other wick feeds.

In some embodiments, the plurality of wick feeds may be interactively connected in a multi-connected configuration such that a permutation of the feed paths, which may intersect with each other, may lead to a portion of the wick body. This configuration may help prevent the wick feed mechanism from becoming completely clogged if, for example, one or more of the feed paths in the permutation of wick feeds become clogged due to the formation of gas bubbles or other types of blockage. Preferably, the instrumentation of the plurality of feed paths may allow the vaporized material 1302 to safely pass through one or more of the paths (or to switch to another, open path) into the wick body portion, even if some of the paths or some of the routes in the permutation of wick feeds are completely or partially clogged or clogged.

Depending on the implementation, the wick feed path may have a shape that may be tubular, such as having a circular or polygonal cross-section. For example, the hollow cross-section of the wick feed path may be triangular, rectangular, pentagonal, or any other suitable geometric shape. In one or more embodiments, the perimeter of the wick feed path may be in the shape of a hollow cross, such as such that the arms of the cross have a narrower width compared to the diameter of the central transition portion of the cross from which the arms extend.

More generally, the wick feed channel (also referred to herein as the first channel) may have a cross-sectional shape with at least one irregularity (e.g., a protrusion, a side channel, etc.) that provides an alternative path for the liquid vaporized material to flow in the event that an air bubble blocks another portion of the wick feed cross-sectional area.

The cross-shaped cross-section of the current example is an example of such a structure, but those skilled in the art will understand that other shapes are also contemplated and feasible in accordance with the present disclosure.

The implementation of a cruciform channel or tube formed by the wick feed path can overcome the clogging problems because the cruciform tube can essentially be viewed as comprising five separate channels (e.g., a central channel formed in the hollow center of the cruciform and four additional channels formed in the hollow arms of the cruciform). In such an implementation, a clogging in the feed tube, e.g., by a gas bubble, will likely form in the central portion of the cruciform tube, leaving the subchannels (i.e., channels extending through the arms of the cruciform tube) open to flow.

In one or more aspects, the wick feed channels may be wide enough to allow free movement of the vaporized material 1302 through the feed channels and toward the wick. In some embodiments, the flow through the wick feed may be enhanced or adjusted by calculating the relative diameter of certain portions of the wick feed to enhance capillary pull or pressure on the vaporized material 1302 traveling along the wick feed path. In other words, depending on the shape and other structural or material factors, some wick feed channels may rely on gravitational or capillary forces to cause the vaporized material 1302 to move toward a portion of the wick body.

In a cruciform tube implementation, for example, the delivery paths that pass through the arms of the cruciform tube can be configured to deliver the pressure by capillary pressure instead of relying on gravity. In such an implementation, the central portion of the cruciform tube can deliver the pressure by gravity, for example, while the flow of vaporized material 1302 in the arms of the cruciform tube can be supported by capillary pressure. It should be noted that the cruciform tube disclosed herein is presented as an exemplary embodiment.

The concepts and functionality implemented in this exemplary embodiment can be extended to wick delivery paths with various cross-sectional shapes (e.g., tubes with hollow star-shaped cross-sections having two or more arms extending from a central tunnel extending along the wick delivery path).

Fig. 11C illustrates an exemplary design of a manifold 1313 in which two wick feeds 1368 are located on two opposite sides of a central tunnel 1100 such that vaporized material 1302 can enter these feeds and flow directly to a cavity section at the other end of the manifold 1313 where a wick housing is formed.

The wick feed mechanisms may be formed through the manifold 1313 such that at least one wick feed path in the manifold 1313 may be formed as a hollow tube with a polyhedral cross-section. For example, the hollow cross-section of the wick feed may be shaped like a plus sign (e.g., a hollow cross-shaped wick feed when viewed from the top of the cross-section) such that the arms of the cross have a narrower width compared to the diameter of the central transition portion of the cross from which the arms extend.

A cross-shaped passage or tube formed through the wick feed path can overcome the clogging problem because the cross-shaped tube can be considered to include five separate channels (e.g., a central channel formed in the hollow center of the cross and four additional channels formed in the hollow arms of the cross). In such an implementation, clogging in the feed tube by a gas bubble (e.g., an air bubble) is likely to occur in the central portion of the cross-shaped tube.

This central location of the gas bubble will ultimately leave subchannels (i.e., passages that extend through the arms of the cross-shaped tube) that remain open to the flow of vaporized material 1302 even when the central path is blocked by the gas bubble.

Other implementations for the wick feed channel structure are possible, which may serve the same or similar purpose as described above with respect to trapping gas bubbles or avoiding complete clogging of the wick feed channel with trapped gas bubbles.

Adding more outlets in the manifold structure 1300 may provide higher flow rates, depending on the implementation, since a relatively larger total volume of vaporized material 1302 may be displaced when additional outlets are present. In fact, although not explicitly shown, embodiments with more than two outlets (e.g., three outlet implementations, four outlet implementations, etc.) are also within the scope of the disclosed subject matter.

As shown in Fig. 14A and 14B, some embodiments may include a manifold structure 1400 with two wick feeds. In such embodiments, the wick may have a higher saturation level and a lower probability of depletion compared to an embodiment in which a single feed is provided.

Fig. 15A, 15B and 15C show perspective and planar side cross-sectional views of an exemplary manifold structure for a dual-feed wick 1562. As shown, the wick or wick 1562 may be positioned or disposed within the cartridge 1500 such that at least two separate wick feeds 1566 and 1568 are provided to allow vaporized material 1302 to move toward the portion of the cartridge 1500 where the wick 1562 is disposed.

As previously indicated, a dual wick feed may have the advantage of providing the wick 1562 with, for example, a dual stream of vaporizable material 1302 compared to a single wick feed. Preferably, a dual wick feed implementation provides sufficient feed to the wick 1562 and helps to avoid a dry wick 1562 condition if, for example, one of the wick feeds is blocked. As shown, the lower portion of the wick 1562 may extend downwardly into a portion of the cartridge 1500 that forms the heating chamber or atomizers.

Fig. 16A shows a planar side cross-sectional view of an exemplary cartridge in which a dual-track or dual-feed wick 1562 is located within a manifold structure.

Fig. 168 shows a planar side view in cross-section of an exemplary manifold structure in which a wick 1562 may be disposed. Fig. 16C shows an exemplary perspective view of a cartridge in accordance with one or more embodiments. As shown, the first end of the wick 1562 may have two or more feeds, horns, or flange ends for at least partial engagement with two or more wick openings in the partition 1513, such that at least one of the flange ends, for example, tangentially enters the volume in the storage chamber 1542 or, for example, at least partially extends into the volume in the storage chamber 1542.

According to one or more implementations, the cartridge 1500 may include a reservoir with a storage chamber 1542 for storing the vaporized material 1302. A secondary volume 1510, separate from the storage chamber 1542, may also be formed within the cartridge 1500. The secondary volume 1510 may communicate with the storage chamber 1542 via one or more wicks 1590. The secondary volume 1510 may be configured to at least house a wick 1562. The wick 1562 may be configured to absorb the vaporized material 1302 passing through the wick feed 1590 such that upon thermal interaction with the atomizer, the vaporized material 1302 is absorbed by the wick 1562 and converted to at least one of the vapors. or aerosol.

The wick 1562 may be at least partially confined by one or more heating elements of the atomizer disposed in the secondary volume 1510. A partition 1513 for at least partially separating the storage chamber 1542 from the secondary volume 1510 may be provided such that the flow of vaporized material 1302 through the wick feed 1590 may be controlled. At least a first portion of the wick feed 1590 may be formed by at least one or more openings in the partition 1513.

At least a second portion of the wick feed 1590 may include a vapor channel connecting one or more openings in the partition 1513 to the auxiliary volume 1510. An airflow channel 1538 may be provided to connect the secondary volume 1510 to the mouthpiece such that vaporized material 1302 that has been vaporized exits the secondary volume 1510 toward the mouthpiece through the airflow channel 1538.

Fig. 16A, 168, 16C, 17A and 178 show a perspective view of a first side of a cartridge and a cross-sectional view of a second side of the cartridge having a wick 1562 that projects into a storage chamber 1542. The wick 1562 may include at least a first end 1592 and a second end 1594, with the first end 1592 being proximate to the septum 1513 and the second end extending distally in an opposite direction to the first end 1592.

The first end 1592 of the wick 1562 may at least partially extend through a wick opening in the partition 1530 to at least partially extend into a volume in the storage chamber 1542. In one aspect, the first end 1592 of the wick 1562 may at least partially extend through a wick opening in the partition 1530 to at least tangentially enter a volume in the storage chamber 1542.

Fig. 26A shows perspective, front, side, bottom and top views of an exemplary embodiment of a manifold 1313 with an M-shaped shutter 110. As shown in Figs. 25 and 26, the manifold 1313 may be mounted within a hollow container in a cartridge 1320 along with additional components (e.g., a wick element 1362, a heating element 1350 and a wick housing 1315). A wick element 1362 may be positioned between the second end of the manifold 1313 and a heating element 1350 wrapped around the wick element 1362. During assembly, the manifold 1313, wick element 1362, and heating element 1350 may be assembled together and enclosed by a wick housing 1315 before being inserted into a cavity in the cartridge 130.

The wick housing 1315 may be inserted, along with other noted components, into the end of the cartridge 1320 opposite the mouthpiece to retain the components therein by a seal or press fit. The seal or fit of the wick housing 1315 and the manifold 1313 within the interior walls of the cartridge receiving sleeve 1320 is preferably made sufficiently tight to prevent leakage of the vaporizable material 1302 contained in the cartridge reservoir 1320. In some embodiments, the seal between the wick housing 1315 and the manifold 1313 and the interior walls of the cartridge receiving sleeve 1320 is also sufficiently tight to prevent manual disassembly of the components by a user.

With reference to Fig. 10C, 100, 118, 268 and 26C, in some embodiments, the collector 1313 can be configured to be inserted into the receiving end of the storage chamber 1342. As shown in

Fig. 268 and 26C, the end of the manifold 1313 opposite the end that is received by the storage chamber 1340 can be configured to accommodate a wick element 1362. For example, forked protrusions 1108 can be formed to securely receive the wick element 1362. The wick body 1315, as shown in the cross-sectional views toward the bottom of Fig. 268 and 26C, can be used to further secure the wick element 1362 in a fixed position between the forked protrusions 1108. This configuration can also prevent significant swelling and weakening of the wick element 1362 due to over-saturation.

Referring to Fig. 268, in one embodiment, the wick element 1362 may be constrained or compressed at certain locations along its length (e.g., toward the longitudinal distal ends of the wick element 1362 located directly below the wick feeds 1368) by compression ribs 1110 to assist in preventing leakage, e.g., by maintaining a large area of saturation of the vaporizable material 1302 toward the ends of the wick element 1362 such that the central portion of the wick element 1362 remains drier and less prone to leakage. In addition, the use of compression ribs 1110 may further compress the wick element 1362 into the atomizer body to prevent leakage into the atomizer.

Figs. 260-26E show planar top views of exemplary wick delivery mechanisms formed or structured through a manifold 1313, according to one or more implementations. As shown in

Fig. 260, at least one wick path 1368 in the manifold 1313 may be formed as a hollow tube with a polyhedral cross-section. For example, the hollow cross-section of the wick feed 1368 may be shaped like a plus sign (e.g., a hollow cruciform wick feed when viewed from a top cross-sectional view) such that the arms of the cross have a narrower width compared to the diameter of the central transition portion of the cross from which the arms extend.

As shown in Fig. 26E, a cross-shaped passage or tube formed through the wick feed path 1368 can overcome clogging problems because the cross-shaped tube can be viewed as comprising five separate channels (e.g., a central channel formed in the hollow center of the cross and four additional channels formed in the hollow arms of the cross). In such an implementation, a clogging in the feed tube by a gas bubble (e.g., an air bubble) is likely to form in the central portion of the cross-shaped tube, as shown in Fig. 26E. Such a central location of the gas bubble will ultimately leave auxiliary channels (i.e., channels that pass through the arms of the cross-shaped tube) that remain open to the flow of vaporized material 1302 even when the central path is blocked by a gas bubble.

As shown in Fig. 26E, other implementations of the wick feed path structure 1368 are possible that can serve the same or similar purpose as described above with respect to entrapping gas bubbles or avoiding complete clogging of the wick feed path 1368 with entrapped gas bubbles. As shown in the exemplary illustration in Fig. 26E, one or more teardrop-shaped protrusions 13b6va/13686 (e.g., similar in shape to one or more individual nipples with a wick feed path 1368 therebetween) may be formed at the end of the wick feed path 1368 through which the vaporized material 1302 flows from the storage chamber 1340 to the manifold 1313 to assist in guiding the vaporized material 1302 along the wick feed path 1368 if a gas bubble is trapped in the central portion of the wick feed path 1368. Thus, a reasonably controlled and stable flow of the vaporized material 1302 can be fed toward the wick, preventing a situation in which the wick is inadequately saturated with the vaporized material 1302.

Heating element implementation options

As shown in Fig. 18A-18O0, the vaporizer cartridge 1800 may also include a heating element 1850 (e.g., a flat heating element), as described above. The heating element 1850 includes a first portion 1850A disposed approximately parallel to the airflow channels 1838 and a second portion 1850B disposed approximately perpendicular to the airflow channels 1838. As shown, the first portion 1850A of the heating element 1850 may be disposed between opposing portions of the manifold 1813. When the heating element 1850 is activated, a temperature increase occurs due to current flowing through the heating element 1850 to generate heat.

Heat may be transferred to some of the vaporized material 1302 by conductive, convective, and/or radiative heat transfer such that at least a portion of the vaporized material 1302 is vaporized. Heat transfer may occur to the vaporized material 1302 in the reservoir, the vaporized material 1302 withdrawn from the collector 1813, and/or the vaporized material 1302 drawn into a wick held by the heating element 1850.

Air entering the vaporizer flows along the air channel through the heating element 1850, removing the vaporized vaporizable material 1302 from the heating element 1850 and/or the wick. The vaporized vaporizable material 1302 may condense due to cooling, pressure changes, etc., such that it exits the mouthpiece 1830 through at least one of the airflow channels 1838 as an aerosol for inhalation by the user.

Referring to Fig. 19A-19C, the vaporizer cartridge 1900 may include a coiled heating element 1950 and two airflow channels 1938. As mentioned above, the heating element 1950 may be crimped around a wick 1962 or pre-formed to accommodate the wick 1962.

The heating element 1950 may include one or more prongs 1950A. The prongs 1950A may be located in the heating portion of the heating element 1950 and configured such that the resistance of the prongs 1950A is matched to a suitable resistance value to effect localized heating within the heating element 1950 for more efficient and effective heating of the vaporized material 1302 from the wick 1962.

The teeth 1950A form segments or tracks that heat a thin path, arranged in series and/or parallel to provide a desired amount of resistance. The specific geometry of the teeth 1950A may be advantageously selected to provide a specific localized resistance for heating the heating element 1950. For example, the teeth 1950A may include one or more of the various configurations and features of the teeth described and discussed in more detail below.

When the heating element 1950 is activated, a temperature increase occurs due to the current flowing through the heating element 1950 to generate heat. The heat is transferred to some of the vaporizing material 1302 by conductive, convective, and/or radiative heat transfer, such that at least a portion of the vaporizing material 1302 is vaporized.

Heat transfer may occur to the vaporizable material 1302 in the reservoir, the vaporizable material 1302 withdrawn from the manifold 1913, and/or the vaporizable material 1302 drawn into the wick 1962 held by the heating element 1950. In some implementations, the vaporizable material 1302 may vaporize along one or more edges of the prongs 1950A.

Air entering the vaporizer flows along the air channel over the heating element 1950, removing the vaporized vaporizable material 1302 from the heating element 1950 and/or the wick 1962. The vaporized vaporizable material 1302 may condense due to cooling, pressure changes, etc., such that it exits the mouthpiece through at least one of the airflow channels 1938 as an aerosol for inhalation by the user.

Referring to Fig. 20A-20C, a vaporizer cartridge 2000 may include a heating element 2050 and a single (e.g., central) airflow channel 2038. As mentioned above, the heating element 2050 may be crimped around a wick 2062 or pre-formed to accommodate the wick 2062. The heating element 2050 may include one or more prongs 2050A.

The prongs 2050A may be located in the heating portion of the heating element 2050 and designed such that the resistance of the prongs 2050A is matched to a corresponding resistance value to effect localized heating within the heating element 2050 for more efficient and effective heating of the vaporized material from the wick 2062.

The teeth 2050A form segments or tracks that heat a thin path, arranged in series or parallel to provide the required amount of resistance. The specific geometry of the teeth 2050A can be advantageously selected to form a specific localized resistance for heating the heating element 2050. For example, the teeth 2050A can include one or more of the various tooth configurations described in more detail below.

When the heating element 2050 is activated, a temperature increase occurs due to current flowing through the heating element 2050 to generate heat. The heat is transferred to some of the vaporizing material 1302 by conductive, convective, and/or radiative heat transfer, such that at least a portion of the vaporizing material 1302 is vaporized.

Heat transfer may occur to the vaporized material 1302 in the reservoir, the vaporized material 1302 withdrawn from the collector 2013, and/or the vaporized material 1302 drawn into the wick 2062 held by the heating element 2050.

In some implementations, the vaporizable material 1302 may be vaporized along one or more edges of the prongs 2050A. Air entering the vaporizer flows along an air path over the heating element 2050, removing the vaporized vaporizable material 1302 from the heating element 2050 and/or the wick 2062. The vaporized vaporizable material 1302 may condense due to cooling, pressure changes, etc., such that it exits the mouthpiece through at least one of the airflow channels as an aerosol for inhalation by the user.

As shown in Fig. 10C, 118 and 21A, in some embodiments, the collector 1313 may be configured to include a flat rib 2102 that projects outwardly near the lower perimeter of the collector 1313 to provide a suitable surface for welding the collector 1313 to the interior walls of the storage chamber 1342 after the collector 1313 is inserted into a receiving cavity or slot in the storage chamber 1342.

Depending on the implementation, a full-perimeter or track welding option may be used to securely secure the manifold 1313 to the receiving cavity or slot in the storage chamber 1342. In some embodiments, the friction-locking and hermetic connection may be established without the use of welding methods. In some embodiments, an adhesive material may be used in place of or in addition to the connection methods described above.

Referring to Fig. 118 and 218, in accordance with one or more aspects, the sealing flange profile 2104 can be formed around the perimeter of the spiral ribs of the manifold 1313 that define the overflow channel 1104, such that the sealing flange profile 2104 can support a disk-turn (quick-turn) molding process. The geometry of the sealing flange profile 2104 can be created in various ways, such that the manifold 1313 can be inserted into a receiving cavity or receiving slot in the storage chamber 1342 with a frictional seal, and the vaporized material 1302 can flow through the overflow channel 1104 without any leakage along the sealing flange profile 2104.

Referring to FIGS. 22A, 228, and 82-86, a vaporizer cartridge 2200 may include a composite heating element, such as a heating element 500, and two airflow channels 2238. As mentioned above, the heating element 500 may be crimped around a wick 2262 or preformed to receive the wick 226. The heating element 500 may include one or more prongs 502. The prongs 502 may be positioned in the heating area of the heating element 500 and designed such that the resistance of the prongs 502 is matched with a corresponding resistance value to effect localized heating within the heating element 500 for more efficient and effective heating of the vaporized material 1302 from the wick 2262.

The teeth 502 form segments or tracks that heat thin tracks arranged in series or parallel to provide a desired amount of resistance. The specific geometry of the teeth 502 can be selected to provide a specific localized resistance for heating the heating element 500. For example, the teeth 502 and the heating element 500 can include one or more of the various tooth configurations and features described in more detail below.

In some implementations, the teeth 502 include a platform portion 524 of the teeth and side portions 526 of the teeth. The platform portion 524 of the teeth is configured to contact one end of the wick 2262, and the side portions 526 of the teeth are configured to contact opposite sides of the wick 2262. The platform portion 524 of the teeth and the side portions 526 of the teeth form a pocket that is configured to receive the wick 2262 and/or conform to the shape of at least a portion of the wick 2262. The pocket allows the wick 2262 to be attached to and retained by the heating element 500 in the pocket.

In some embodiments, the side portions 526 of the prongs and the platform portion 524 of the prongs support the wick 2262 by compression. The platform portion 524 of the prongs and the side portions 526 of the prongs contact the wick 2262 to provide multidimensional contact between the heating element 500 and the wick 2262. The multidimensional contact between the heating element 500 and the wick 2262 provides for more efficient and/or rapid transfer of the vaporizable material 1302 from the vaporizer cartridge reservoir to the heating area (via the wick 2262) to be vaporized.

The heating element 500 may include one or more legs 506 extending from the prongs 502 and cartridge contacts 124 formed at the end portion and/or as part of at least one of the one or more legs 506. The heating element 500 shown in Figs. 22A-22B8 and 82-86 includes four legs 506 by way of example. At least one of the legs 506 may include and/or define one of the cartridge contacts 124 that is configured to contact a corresponding one of the contacts 125 of the evaporator socket. In some implementations, a pair of legs 506 (and cartridge contacts 124) may contact one of the contacts 125 of the socket.

The legs 506 may be spring-loaded to provide support for the contact of the legs 506 with the contacts 124 of the socket. The legs 506 may include a portion that is bent to help maintain contact with the contacts 125 of the socket. The spring-loaded nature of the legs 506 and/or the curvature of the legs 506 may help increase and/or maintain a stable pressure between the legs 506 and the contacts 125 of the socket. In some implementations, the legs 506 are connected to a support 176 to help increase and/or maintain a stable pressure between the legs 506 and the contacts 124 of the socket. The support 176 may include plastic, rubber, or other materials to help maintain contact between the legs 506 and the contacts 125 of the socket. In some implementations, the support 176 is formed as part of the legs 506.

The legs 506 may contact one or more self-cleaning contacts that are configured to clean the connection between the cartridge contacts 124 and other contacts or the power source 112. For example, the self-cleaning contacts may include at least two parallel but offset projections that frictionally engage and slide relative to each other in a direction that is parallel or perpendicular to the direction of insertion.

In some implementations, the legs 506 include retaining portions 180 that are configured to bend around at least a portion of the wick body 178 that surrounds at least a portion of the wick 2262.

The retaining portions 180 form the end of the legs 506. The retaining portions 180 assist in attaching the heating element 500 and the wick 2262 to the wick housing 178 (and to the vaporizer cartridge).

When the heating element 500 is activated, a temperature increase occurs due to the current flowing through the heating element 500 to generate heat. The heat is transferred to some of the vaporizing material 1302 via conductive, convective, and/or radiative heat transfer, such that at least a portion of the vaporizing material 1302 is vaporized.

Heat transfer may occur to the vaporized material 1302 in the reservoir, the vaporized material 1302 withdrawn from the manifold 2213, and/or the vaporized material 1302 drawn into the wick 2262 held by the heating element 500.

In some implementations, the vaporizable material 1302 may vaporize along one or more edges of the prongs 502. Air entering the vaporizer flows along an air path over the heating element 500, removing the vaporized vaporizable material 1302 from the heating element 500 and/or the wick 2262. The vaporized vaporizable material 1302 may condense due to cooling, pressure changes, etc., such that it exits the mouthpiece through at least one of the airflow channels 2238 as an aerosol for inhalation by the user.

Fig. 23 shows a cross-sectional view of a wick housing 178 according to embodiments of the claimed subject matter. The wick housing 178 may include a wick support rib 2296 that extends from the outer shell of the wick housing 178 to the wick 2262 during assembly. The wick support rib 2296 prevents deformation of the wick 2262 during assembly.

Fig. 24 shows an example of a wick housing 178 including an identification chip 2295. The identification chip 2295 may be held, at least partially, by the wick housing 178. The identification chip 2295 may be configured to communicate with a corresponding chip reader located on the vaporizer.

Fig. 25 shows perspective, front, side and exploded views of an exemplary embodiment of a cartridge 1320 with pressed-in components. As shown, the cartridge 1320 may include a mouthpiece-reservoir combination formed in the form of a sleeve with an airflow channel 1338 defined through the sleeve. A section in the cartridge 1320 houses a manifold 1313, a wick element 1362, a heating element 1350 and a wick housing 1315. An opening at a first end of the manifold 1313 leads to the airflow channel 1338 in the mouthpiece and provides a path for vaporized evaporative material 1302 to pass from the heating element section 1350 to the mouthpiece from which the user inhales.

Additional and/or alternative embodiments of a fluid outlet assembly

Fig. 27A-27B show front planar enlarged views of exemplary flow control mechanisms in the structure of the manifold 1313. Similar to the flow control mechanism discussed with reference to Fig. 11M and 11M, the flow control mechanisms of the outlet assembly 2701 or 2702 can be implemented in various forms in various embodiments. In the example shown in Fig. 27A, the channels or overflow channel 1104 in the manifold 1313 can be connected to the storage chamber, for example, through the outlet assembly 2701 for the fluid medium, such that the outlet assembly 2701 includes at least two openings that are connected to the storage chamber of the cartridge.

As previously indicated, a fluid seal can be maintained in the outlet assembly 2701 regardless of the location of the cartridge. On the one hand, an outlet channel can be maintained between the overflow channel and the outlet assembly 2701. On the other hand, high capillary action channels can be provided to encourage a cutoff to maintain a fluid seal.

Fig. 278 shows an alternative structure of the outlet assembly 2702 with three holes that are connected to the storage chamber of the cartridge with a cut-off channel that prevents the rupture of the liquid seal between the outlet assembly 2701 and the storage chamber.

Fig. 28 illustrates a snapshot in time when the flow of vaporized material collected in the exemplary collector according to Fig. 27A or 27B is controlled to provide proper ventilation in the cartridge storage chamber according to one implementation. As shown, the design of the outlet assembly 2701 in Fig. 27A differs from the design of the outlet assembly 2702 in Fig. 27B in that the design of the latter outlet assembly 2702 provides an open section on one side instead of the wall structure shown in Fig. 27A. This more open implementation provides improved microfluidic interaction between the vaporized material 1302 and the open side of the outlet assembly 2702.

Fig. 29A-29C show perspective, front and side views of an exemplary embodiment of a cartridge. The cartridge, as shown, can be assembled from a plurality of components including a manifold, a heating element and a wick housing to hold the cartridge components in place when the components are inserted into the cartridge housing. In one embodiment, a laser weld can be implemented at a peripheral joint located approximately at the point where one end of the manifold structure meets the wick housing. The laser weld prevents the flow of liquid vaporizable material 1302 from the manifold into the heating chamber where the atomizer is located.

In Fig. 30A-30E, perspective views of an exemplary cartridge with various fill capacities are shown. As previously indicated, the volumetric size of the overflow volume can be configured to be equal to, approximately equal to, or greater than the amount of increase in the volume of the contents contained in the storage chamber. When the volume of the contents in the storage chamber increases due to one or more environmental factors, if the volume of the contents contained in the storage chamber is X when the pressure within the storage chamber increases to Y, then 7 is the amount of vaporized material 1302 that can be displaced from the storage chamber into the overflow volume. In essence, in one or more embodiments, the overflow volume is configured to be at least large enough to contain a quantity of 2 of vaporized material 1302.

Fig. 30A is a perspective view of an exemplary cartridge housing having a reservoir that, when filled, provides storage for a volume of, for example, about 1.20 ml of vaporizable material 1302. Fig. 30B is a perspective view of an exemplary cartridge assembly, wherein the storage chamber and the collector overflow channels hold a combined volume of, for example, about 1.20 ml of vaporizable material 1302 when both are filled. Fig. 30C is a perspective view of an exemplary cartridge assembly when the collector overflow channel is filled to, for example, about 0.173 ml. Fig. 30C is a perspective view of an exemplary cartridge assembly when the storage chamber is filled to, for example, about 0.934 ml.

FIG. 30 is a perspective view of an exemplary cartridge assembly with wick feed channels and an airflow channel in a mouthpiece shown in cross-sectional view, wherein the wick feed channels have a volume of, for example, approximately 0.094 ml. FIG. 30 is a perspective view of an exemplary cartridge assembly with an overflow air channel integrated into a portion of the manifold toward the lower rib, wherein the airflow air channel has, for example, an approximate volume of 0.043 ml.

Fig. 31A-31C illustrate front views of an exemplary cartridge according to one embodiment, in which a dual needle fill is implemented to fill the cartridge reservoir (Fig. 31A) before the manifold and closing plug are inserted into the cartridge body (Fig. 31B) to form a fully assembled cartridge (Fig. 31C).

Fig. 34A and 34B show front and side views of an exemplary cartridge housing with an external airflow channel. In some embodiments, one or more shutters, also referred to as air inlets, may be provided on the evaporator housing 110. The inlets may be located within the air inlet channel with a width, height, and depth that are designed to prevent the individual air inlets from being inadvertently blocked when the user is holding the evaporator 100. In one aspect, the air inlet channel design may be long enough not to block or significantly restrict airflow through the air inlet channel when, for example, the user's fingers block a portion of the air inlet channel.

In some configurations, the geometric design of the air intake channel may provide at least one of a minimum length, a minimum depth, or a maximum width, for example, to ensure that the user cannot completely close or block the air intake openings in the air intake channel with a hand or other part of the body.

For example, the length of the air intake channel may be greater than the width of an average human finger, and the width and depth of the air intake channel may be such that when the user's finger is pressed against the top of the channel, the skin folds created do not interact with the air intake openings in the air intake channel.

The air inlet channel may be designed or formed to have rounded edges or formed to surround one or more corners or portions of the evaporator housing 110 such that the air inlet channel cannot be easily closed by a user's finger or body part. In some embodiments, an optional cover may be provided to protect the air inlet channel so that a user's finger cannot block or completely restrict the flow of air into the air inlet channel. In one exemplary embodiment, the air inlet channel may be formed at the interface between the evaporator cartridge 120 and the evaporator housing 110 (e.g., in the socket region - see FIG. 1 ). In such an embodiment, the air inlet channel may be protected from blockage by the air inlet channel being formed within the socket region. This embodiment may also provide a configuration in which the air inlet channel is hidden from view.

Fig. 32A-32C show front, top and bottom views of an exemplary cartridge housing, respectively, with a condensate collector 3201 integrated into the air duct.

As shown in Fig. 33A, air or steam can flow into the air flow channel in the cartridge.

The airflow channel may extend longitudinally from the aperture or opening in the mouthpiece, inwardly along the cartridge body, such that vaporized material 1302 inhaled through the mouthpiece passes through a condensate collector 3201. As shown in Fig. 33B, in addition to the condensate collector 3201, condensate recycling channels 3204 (e.g., microfluidic channels) may be configured to extend, for example, from the opening in the mouthpiece to the wick.

The condensate collector 3201 acts on the vaporized vaporized material 1302, which is cooled and converted into droplets in the mouthpiece to collect and direct the condensed droplets to the condensate recycling channels 3204. The condensate recycling channels 3204 collect and return the condensate and large vapor droplets to the wick and prevent the liquid vaporized material formed in the mouthpiece from depositing in the user's mouth when the user takes a puff or inhales from the mouthpiece. The condensate recycling channels 3204 may be implemented as microfluidic channels to trap any liquid droplets and thereby prevent direct inhalation of the vaporized material in liquid form and prevent an undesirable sensation or taste in the user's mouth. Additional and/or alternative embodiments of the condensate recycling channels and/or one or more other features for controlling, collecting, and/or recycling condensate in the evaporator device are described and illustrated with reference to Figs. 117-119C. The condensate recycling channels (and/or one or more other features described and illustrated in Figs. 117-119C) may, alone or in combination with one or more features of the evaporator cartridge, facilitate controlling, collecting, and/or recycling condensate in the evaporator device.

Fig. 35 and 36 show perspective views of a portion of an exemplary cartridge where the manifold structure 1313 includes an air gap 3501 near a lower edge of the manifold structure. The location of the air gap 3501 may coincide with the location where an air exchange port is located in the manifold structure 1313. As previously indicated, the manifold structure 1313 may be configured to have a central opening through which an air flow channel is implemented that leads to the mouthpiece. The air flow channel may be connected to the air exchange port such that the volume within the overflow channel of the manifold 1313 is connected to the ambient air through the air exchange port and is also connected to the volume in the storage chamber through the outlet opening.

In one or more embodiments, the outlet port can be used as a control valve to primarily control the flow of liquid between the overflow channel and the storage chamber. The air exchange port can be used to primarily control the flow of air between the overflow channel and an air channel leading, for example, to a mouthpiece. The combination of interactions between the outlet port, the overflow channel collector channels, and the air exchange port ensures proper saturation of the wick and proper venting of air bubbles that may be introduced into the cartridge due to various environmental factors, as well as a controlled flow of vaporized material 1302 into and out of the collector channels.

The presence of an air gap 3501 near the air exchange ports provides a more reliable ventilation process because it prevents the liquid vaporized material 1302 located in the collector from seeping into the wick housing area.

Fig. 37A-37C show top views of various exemplary shapes and configurations of a wick feed for a cartridge according to one or more embodiments. As shown, Fig. 37A illustrates a cross-sectional view of a cross-shaped wick feed according to an exemplary embodiment. Fig. 37B illustrates a wick feed with a generally rectangular cross-section. Fig. 37C illustrates a wick feed with a generally square cross-section. As previously indicated, depending on the implementation, one or more wick feeds 3701 may be configured as passages, channels, tubes, or cavities that extend through the manifold structure 1313 as pathways that feed the wick with vaporizable material 1302 stored in the storage chamber. In some configurations, the wick feeds 3701 may run approximately parallel to the central channel 3700 in the manifold 1313.

Depending on the implementation, the wick feed channel may be tubular in shape, for example, with a substantially rectangular or square cross-sectional shape, as shown in Fig. 37B and 37C. A channel or tube with a variable cross-sectional width formed through the wick feed channel may overcome clogging problems if such a shape provides a multi-channel configuration that allows vaporized material 1302 to pass through the wick feed channel even if an air bubble forms in some area of the wick. In such implementations, a blockage in the wick feed tube is likely to form in a portion of the wick feed tube, leaving subchannels (e.g., alternate channels) open to flow.

In one or more aspects, the wick feed channels may be wide enough to allow free movement of the vaporizable material 1302 through the feed channels and toward the wick. In some embodiments, the flow through the wick feed may be enhanced or adjusted by calculating the relative diameter at certain portions of the wick feed to provide capillary pull or pressure on the vaporizable material 1302 passing through the wick feed channel. In other words, depending on the shape and other structural or material factors, some wick feed channels may rely on gravitational or capillary forces to cause the vaporizable material 1302 to move toward a portion of the wick body.

Fig. 370 and 37E show illustrative exemplary embodiments of a manifold 1313 with a dual wick feed 3701. At least one of the wick feeds 3701 may be configured to include a partial dividing wall. The partial dividing wall may be configured to divide the volume within the wick feed 3701 into two separate volumes (i.e., ventricles, cavities), as shown in the perspective cross-sectional view of Fig. 370 and 37E. The implementation of the partial wall allows the vaporized material 1302 to easily flow from the reservoir into the wick housing section to saturate the wick.

In some embodiments, a partial wall in a single wick feed essentially forms two cavities in a single wick feed. The cavities in the wick feed may be separated by a partial wall and may be used separately to allow vaporized material 1302 to flow toward the wick body. In such embodiments, if a gas bubble is displaced in one of the cavities in the wick feed, the other cavity may remain open. The cavity may be volumetrically larger to allow sufficient vaporized material 1302 to flow toward the wick for adequate saturation.

Accordingly, in embodiments that utilize two wick feeds 3801, effectively four cavities may be available to carry the flow of vaporized material 1302 toward the wick. Thus, in the event of gas bubbles forming in one, two, or even three of the cavities, at least a fourth cavity will be used to direct the flow of vaporized material 1302 toward the wick, reducing the likelihood of wick dehydration.

Fig. 38 shows an enlarged view of a wick feed end located proximate to a wick (e.g., at an end configured to at least partially receive the wick), where optionally at least a portion of the wick is sandwiched between two or more prongs extending from the wick feed end.

Fig. 39 illustrates a perspective view of an exemplary collector structure having a square wick feed in combination with an air gap at one end of the overflow channel.

Fig. 40A-40EE show rear, side, top, front and bottom views of the manifold structure, respectively. Fig. 40A shows a rear view of the manifold structure, for example, with four separate ejection locations. Fig. 40B shows a side view of the manifold structure, in particular, showing an end section 4002, for example, in the form of a wick feed clamp, which can firmly hold the wick in the wick feed channel. As shown in Fig. 40C, a portion of the cartridge body that extends inside the cartridge body from the mouthpiece can be inserted through a central channel 3700 in the manifold structure, forming an air duct for the vaporized vaporized material 1302 to exit the atomizer towards the mouthpiece.

Fig. 40C shows a top view of a manifold structure with wick feed channels 4001 for receiving vaporized material from the cartridge storage chamber and directing the vaporized material toward a wick held in position at the end of the wick feed channels 4001 by the protruding ends of the wick feed channels 4001 that form a clamp-shaped end portion 4002.

Fig. 400 shows a planar top view of the manifold structures. As shown, an air gap cavity may be formed in the bottom of the manifold structure at the end of the bottom edge of the manifold structure, where the manifold overflow channel leads to an outlet 3902 for regulating air that communicates with the ambient air. The portion of the cartridge body that extends from the mouthpiece may be inserted through the central channel 3700 in the manifold structure, forming an air duct for the vaporized vaporized material 1302 to exit the atomizer toward the mouthpiece.

Fig. 40E shows a bottom view of the manifold structure 1313, where two wick feed channels terminate in two clamp-like end portions 4002 configured to hold the wick in position near the lower end of the manifold 1313. As shown, an optional segmented rib, flange, or protrusion 4003 may be formed on the surface of the lower end of the manifold 1313 where the manifold 1313 mates with the upper end of the plug 760 during assembly. The protrusion 4003 provides a sealing engagement between the upper end of the plug 760 and the lower end of the manifold 1313, functioning in a manner similar to a flexible O-ring, so that a proper seal can be provided during assembly. In one embodiment, the lower end of the manifold 1313 may be laser welded to the upper portion of the plug 760.

Fig. 41A and 41B show planar top and side views of an alternative embodiment of a collector structure having two clamp-shaped end portions 4002 and two corresponding wick feeds. As shown, this alternative embodiment is shorter in height compared to the embodiment shown in Fig. 40A. This reduced height provides improved functionality by structurally altering the shape of the collector 1313 and the length of the channel in the collector 1313 through which the vaporized material 1302 flows. In fact, depending on the implementation, the length of the vaporized material channel 1302 through the collector 1313 may be shorter in some embodiments to provide more effective capillary pressure and better control of the flow of the vaporized material 1302 into the collector channel 1313.

Fig. 42A and 42B show various perspective, top, bottom, and side views of an exemplary collector 1313 with various structural implementations. For example, the embodiment shown in Fig. 42A includes constriction points that include vertically disposed C-shaped walls. In contrast, in the embodiment shown in Fig. 428, the C-shaped walls are disposed diagonally to provide a more controlled flow of vaporized material 1302 along the collector channel 1313. As shown in the exemplary embodiment in Fig. 428, the C-shaped walls are disposed diagonally relative to the lower collector plate and are disposed vertically relative to the portions of the plates in the collector that are inclined downwardly.

As previously indicated, the flow rate into and out of the manifold 1313 is controlled by manipulating the hydraulic diameter of the overflow channel 1104 in the manifold 1313 by introducing one or more constriction points that effectively reduce the overall volume of the overflow channel 1104. As shown, introducing a plurality of constriction points in the overflow channel 1104 divides the overflow channel into multiple segments in which the vaporized material 1302 can flow in either a first or second direction, such as toward or away from the air control outlet 3902, respectively.

The introduction of the constriction points helps to establish or regulate the capillary pressure condition in the overflow channel 1104 such that the hydraulic flow of the vaporized material 1302 towards the air control outlet 3902 is minimized in a pressure condition where the pressure in the cartridge reservoir is equal to or less than the ambient air pressure. In a pressure condition where the pressure in the reservoir is lower than the ambient pressure (e.g., beyond a first threshold value), the constriction points are configured to control the capillary pressure or hydraulic flow of the vaporized material 1302 in the overflow channel 1104 such that ambient air can enter the overflow channel 1104 through the air control outlet 3904 and move upwardly towards the adjustable fluidic gate 1102 in the reservoir to vent the cartridge (i.e., to establish a pressure equilibrium condition therein).

In some embodiments or scenarios, the venting process described above may not include or require the entry of ambient air through the air control outlet 3904. In some exemplary scenarios, instead of or in addition to air entering through the air control outlet 3904, any air bubbles or gases trapped within the overflow channel 1104 may be moved upward toward the adjustable fluidic gate 1102 to assist in establishing a pressure equilibrium condition within the cartridge by venting the reservoir as the air bubbles are introduced into the reservoir from the overflow channel 1104 through the adjustable fluidic gate 1102, as described in more detail, for example, with reference to FIGS. 11M and 11M. The design of the constriction points and C-shaped walls formed in the path of the overflow channel 1104, as shown in FIG. 42A and 42B, promotes a more controlled flow of vaporized material 1302 through the overflow channel 1104 by better controlling the capillary pressure throughout the path of the overflow control channel 1103.

Fig. 43A illustrates various perspective, top, bottom and side views of an exemplary wick housing 1315 in accordance with one or more embodiments. As shown, one or more perforations or holes may be formed in the bottom of the wick housing 1315 to allow airflow through the wick located in the wick housing 760 of the wick housing 1315. A sufficient number of holes will facilitate sufficient airflow through the wick housing 760 and will ensure proper and timely vaporization of the vaporizable material 1302 absorbed into the wick in response to heat generated by a heating element located near or around the wick.

Fig. 438 illustrates components of the manifold 1313 and wick housing 760 of an exemplary cartridge 1320, in accordance with one or more embodiments. As shown, the wick housing 1315 (which includes the wick housing portion of the cartridge) may be implemented to include a protruding member or lobe 4390. The lobe 4390 may be configured to extend from an upper end of the wick housing 1315, which, when assembled, mates with the receiving end of the manifold 1313. The lobe 4390 may include one or more facets that correspond to or mate with one or more facets in a receiving recess or receiving cavity 1390, e.g., in the bottom of the manifold 1313.

The receiving cavity 1390 may be configured to removably receive the petal 4390, for example, for engagement by a snap-fit connection. The snap-fit connection may assist in holding the collector 1313 and the wick housing 1315 together during or after assembly.

In some embodiments, the petal 4390 may be used to guide the orientation of the wick body 1315 during assembly. For example, in one embodiment, one or more vibrating mechanisms (e.g., vibrating cup feeders) may be used to temporarily hold or position various components of the cartridge 130.

According to some implementations, the petal 4390 may be useful in orienting the upper portion of the wick body 1315 for mechanical engagement for easy engagement and correct automatic assembly.

Additional and/or alternative embodiments of heating elements

As noted above, a vaporizer cartridge consistent with embodiments of the claimed subject matter may include one or more heating elements. FIGS. 44A-116 illustrate embodiments of a heating element consistent with embodiments of the claimed subject matter. While the features described and illustrated with reference to FIGS. 44A-116 may be incorporated into various embodiments of the vaporizer cartridges described above and/or may include one or more features of various embodiments of the vaporizer cartridges described above, the features of the heating elements described and illustrated with reference to FIGS. 44A-116 may additionally and/or alternatively be incorporated into one or more other exemplary embodiments of the vaporizer cartridges, such as those described below.

A heating element consistent with embodiments of the claimed subject matter may preferably be configured to receive a wick element and/or may be compressed or pressed at least partially around the wick element. The heating element may be bent such that the heating element is configured to secure the wick element between at least two or three portions of the heating element. The heating element may be bent to conform to the shape of at least a portion of the wick element. The heating element may be more easily manufactured than typical heating elements. A heating element consistent with embodiments of the claimed subject matter may also be made of an electrically conductive metal suitable for resistive heating, and in some embodiments, the heating element may include a selective coating of another material to provide more efficient heating of the heating element (and thus the vaporized material).

Fig. 44A illustrates an exploded view of an embodiment of a vaporizer cartridge 120, Fig. 44B illustrates a perspective view of an embodiment of a vaporizer cartridge 120, and

Fig. 44C illustrates a bottom perspective view of an embodiment of a vaporizer cartridge 120. As shown in Figs. 44A-44C, the vaporizer cartridge 120 includes a housing 160 and a spray assembly (or atomizer) 141.

The atomizer assembly 141 (see FIGS. 99-01) may include a wick element 162, a heating element 500, and a wick housing 178. As explained in more detail below, at least a portion of the heating element 500 is positioned between the housing 160 and the wick housing 178 and is open for connection to a portion of the vaporizer housing 110 (e.g., electrically connected to the socket contacts 122). The wick housing 178 may have four sides. For example, the wick housing 178 may include two opposite short sides and two opposite long sides. Each of the two opposite long sides may include at least one (two or more) recesses 166 (see FIGS. 99, 111A). The recesses 166 may be located along the long side of the wick housing 178 and adjacent the respective intersections between the long sides and the short sides of the wick housing 178. The recesses 166 may be formed to releasably engage with a corresponding member (e.g., a spring) on the evaporator housing 110 to secure the evaporator cartridge 120 to the evaporator housing 110 within the cartridge seat 118. The recesses 166 provide a mechanically stable attachment means for connecting the evaporator cartridge 120 to the evaporator housing 110.

In some embodiments, the wick housing 178 also includes an identification chip 174, which may be configured to communicate with a corresponding chip reader located on the vaporizer. The identification chip 174 may be glued and/or otherwise attached to the wick housing 178, such as on a short side of the wick housing 178. The wick housing 178 may additionally or alternatively include a chip recess 164 (see FIG. 100) configured to receive the identification chip 174. The chip recess 164 may be surrounded by two, four, or more walls.

The chip recess 164 may be formed to attach an identification chip 174 to the wick housing 178.

As noted above, the vaporizer cartridge 120 may generally include a reservoir, an air passage, and a spray assembly 141. In some configurations, the heating element and/or spray assembly described in accordance with embodiments of the claimed subject matter may be implemented directly within the vaporizer housing and/or may be non-removable from the vaporizer housing. In some implementations, the vaporizer housing may not include a removable cartridge.

Various advantages and benefits of the claimed subject matter may relate to improvements over existing evaporator configurations, manufacturing methods, and the like. For example, it is desirable that an evaporator heating element consistent with embodiments of the claimed subject matter be fabricated (e.g., stamped) from a sheet of material and either crimped around at least a portion of a wick element or bent to provide a preformed member configured to receive the wick element (e.g., the wick element is pushed into the heating element, and/or the heating element is held in tension and pulled over the wick element).

The heating element may be bent such that the heating element secures the wick element between at least two or three parts of the heating element. The heating element may be bent to conform to the shape of at least a part of the wick element.

The configuration of the heating element provides a more consistent and improved manufacturing quality of the heating element. The consistency of the manufacturing quality of the heating element may be particularly important during scalable and/or automated manufacturing processes. For example, a heating element that is consistent with implementations of the claimed subject matter helps reduce tolerance issues that may arise during the manufacturing process when assembling a heating element having multiple components.

In some implementations, the accuracy of measurements obtained from the heating element (e.g., resistance, current, temperature, etc.) may be improved, at least in part, by improved stability in the manufacturing of the heating element, which has reduced tolerance issues. Higher accuracy of measurements may provide an improved user experience when using the vaporizer device. For example, as mentioned above, the vaporizer 100 may receive a signal to activate the heating element either to a full operating temperature to create an inhalable dose of vapor/aerosol, or to a lower temperature to begin heating the heating element.

The temperature of the evaporator heating element can depend on a number of factors, as indicated above, and some of these factors can be made more predictable by eliminating possible variations in the manufacture and assembly of the atomizer components. A heating element made (e.g., stamped) from a sheet of material and either crimped around at least a portion of the wick element or bent to provide a preformed element desirably helps minimize heat loss and ensure that the heating element behaves in a predictable manner to heat to the appropriate temperature.

In addition, as indicated above, the heating element may be completely and/or selectively coated with one or more materials to improve the heating characteristics of the heating element. Coating all or part of the heating element may help minimize heat loss. Coating may also help concentrate the heated portion of the heating element in the proper location, providing a more efficiently heated heating element and further reducing heat loss. Selective coating may help direct the current flowing to the heating element to the proper location. Selective coating may also help reduce the amount of coating material and/or the cost associated with manufacturing the heating element.

Once the heating element is formed into a suitable shape by one or more of the processes described below, the heating element can be compressed around the wick element and/or bent into the proper position to accommodate the wick element. The wick element can, in some embodiments, be a fibrous wick formed as an at least approximately flat pad or with other cross-sectional shapes, such as circles, ovals, etc. The flat pad can provide control over the rate at which the vaporized material is drawn into the wick element more precisely and/or accurately. For example, the length, width, and/or thickness can be adjusted for optimal performance. A wick element that forms a flat gasket may also provide a larger transfer surface area, which may provide for increased flow of vaporizable material from the reservoir into the wick element for vaporization by the heating element (in other words, greater mass transfer of vaporizable material), and from the wick element to the air flowing past it. In such configurations, the heating element may contact the wick element in multiple directions (e.g., on at least two sides of the wick element) to increase the efficiency of the process of drawing the vaporizable material into the wick element and vaporizing the vaporizable material. The flat gasket may also be more easily formed and/or cut and, thus, may be more easily assembled with the heating element. In some implementations, as described in more detail below, the heating element may be configured to contact the wick element on only one side of the wick element.

The wick element may include one or more rigid or compressible materials, such as cotton, silica, ceramic, and/or the like. Relative to some other materials, a cotton wick element may provide an increased and/or more controlled flow rate (flow rate) of the vaporizable material from the vaporizer cartridge reservoir to the wick element for vaporization. In some embodiments, the wick element forms an at least approximately flat gasket that is configured to contact the heating element and/or can be secured between at least two portions of the heating element. For example, the at least approximately flat gasket may have at least a first pair of opposing sides that are approximately parallel to each other. In some embodiments, the at least approximately flat gasket may also have at least a second pair of opposing sides that are approximately parallel to each other and approximately perpendicular to the first pair of opposing sides.

Fig. 45-48 are schematic views of a heating element 100 consistent with embodiments of the claimed subject matter. For example, Fig. 45 illustrates a schematic view of a heating element 500 in a deployed position. As shown, in the deployed position, the heating element 500 forms a planar heating element. The heating element 500 may be initially formed from a substrate material. The substrate material is then cut and/or stamped into the desired shape using various mechanical processes, including, but not limited to, stamping, laser cutting, photoetching, chemical etching, and/or the like.

The substrate material may be made of an electrically conductive metal suitable for resistive heating. In some embodiments, the heating element 500 includes a chromium-nickel alloy, a nickel alloy, stainless steel, and/or the like. As described below, the heating element 500 may be coated at one or more locations on the surface of the substrate material to improve, limit, or otherwise alter the resistivity of the heating element at one or more locations on the substrate material (which may be all or part of the heating element 500).

The heating element 500 includes one or more prongs 502 (e.g., heating segments) disposed in a heating region 504, one or more legs or connecting portions 506 (e.g., one, two, or more) disposed in a transition region 508, and a cartridge contact 124 disposed in an electrical contact region 510 and formed at the end portion of each of the one or more legs 506. The prongs 502, legs 506, and cartridge contacts 124 may be integrally formed. For example, the prongs 502, legs 506, and cartridge contacts 124 form portions of the heating element 500 that are stamped and/or cut from a substrate material. In some implementations, the heating element 500 also includes a heat shield 518 that extends from one or more legs 506 and may also be integral with the teeth 502, legs 506, and contacts 124 of the cartridge.

In some implementations, at least a portion of the heating portion 504 of the heating element 500 is configured to interact with vaporizable material drawn into the wick element from the reservoir 140 of the vaporizer cartridge 120. The heating portion 504 of the heating element 500 may be shaped, sized, and/or otherwise machined to provide the desired resistance.

For example, the teeth 502 located in the heating region 504 can be designed so that the resistance of the teeth 502 corresponds to the appropriate amount of resistance to affect localized heating in the heating region 504 to more efficiently and effectively heat the vaporized material from the wick element. The teeth 502 form segments or paths of thin heating paths that are arranged in series and/or parallel to provide the required amount of resistance.

The prongs 502 (e.g., tracks) may have various shapes, sizes, and configurations. In some configurations, one or more prongs 502 may be spaced apart from each other to allow the vaporized material to be drawn through capillaries from the wick element and from there to vaporize from the lateral edges of each prong 502. The shape, length, width, composition, etc., among other properties of the prongs 502, may be optimized to maximize the efficiency of aerosol generation by vaporizing the vaporized material from the heating region of the heating element 500 and to achieve maximum electrical efficiency. The shape, length, width, composition, etc., among other properties of the prongs 502, may additionally or alternatively be optimized to evenly distribute heat along the length of the prongs 502 (or portions of the prongs 502, e.g., in the heating region 504). For example, the width of the teeth 502 may be the same or may vary along the length of the teeth 502 to control the temperature profile at least in the heating region 504 of the heating element 500. In some examples, the length of the teeth 502 may be adjusted to achieve the desired resistance along at least a portion of the heating element 500, e.g., in the heating region 504. As shown in Figs. 45-48, the teeth 502 are of the same size and shape. For example, the teeth 502 include an outer edge 503 that is approximately aligned and are generally rectangular in shape with flat or square outer edges 503 (see also Figs. 49-53) or rounded outer edges 503 (see Figs. 54 and 55). In some embodiments, one or more of the prongs 502 may include outer edges 503 that are not aligned and/or may have different sizes or shapes (see FIGS. 57-62). In some embodiments, the prongs 502 may be evenly spaced or have a variable spacing between adjacent prongs 502 (see FIGS. 87-92). The particular geometry of the prongs 502 may be selected to provide a certain localized resistance to heating the heating region 504 and to maximize the efficiency of the heating element 500 to heat the vaporized material and generate an aerosol.

The heating element 500 may include portions of wider and/or thicker geometry and/or a different composition relative to the prongs 502. These portions may form electrical contact areas or more conductive portions and/or may include features for mounting the heating element 500 within the vaporizer cartridge. The legs 506 of the heating element 500 extend from the end of each extreme prong 502A. The legs 506 form a portion of the heating element 500 that has a width and/or thickness that is typically wider than the width of each of the prongs 502. Although in some embodiments, the legs 506 have a width and/or thickness that is the same as or narrower than the width of each of the prongs 502. The legs 506 connect the heating element 500 to the wick housing 178 or other portion of the vaporizer cartridge 120 such that the heating element 500 is at least partially or completely contained within the housing 160. The legs 506 provide rigidity to provide mechanical stability to the heating element 500 during and after manufacturing. The legs 506 also connect the cartridge contacts 124 to the prongs 502 located on the heating portion 504. The legs 506 are shaped and sized to allow the heating element 500 to support the electrical requirements of the heating section 504. As shown in Fig. 48, the legs 506 separate the heating section 504 from the end of the evaporator cartridge 120 when the heating element 500 is assembled with the evaporator cartridge 120. As described in more detail below with respect to at least Figs. 82-98 and 103-104, the legs 506 may also include a capillary element 598 that restricts or prevents the flow of fluid from the heating section 504 to other portions of the heating element 500.

In some implementations, one or more legs 506 include one or more locating elements 516. Locating elements 516 may be used to relatively position heating element 500 or portions thereof during and/or after assembly by interacting with other (e.g., adjacent) components of vaporizer cartridge 120. In some implementations, locating elements 516 may be used during or after manufacturing to properly position substrate material for cutting and/or stamping substrate material to form heating element 500 or for further processing heating element 500. Locating elements 516 may be cut or cut off prior to crimping or otherwise bending heating element 500.

In some implementations, the heating element 500 includes one or more heat shields 518.

The heat shields 518 form a portion of the heating element 500 that extends laterally from the legs 506. When assembled and/or compressed, the heat shields 518 are positioned offset in a first direction and/or a second direction opposite the first direction in the same plane as the prongs 502. When the heating element 500 is assembled in the vaporizer cartridge 120, the heat shields 518 are configured to be positioned between the prongs 502 (and the heating section 504) and the housing (e.g., a plastic housing) of the vaporizer cartridge 120. The heat shields 518 can help to isolate the heating section 504 from the housing of the vaporizer cartridge 120. Heat shields 518 help minimize the effect of heat emanating from the heating section 504 on the evaporator cartridge housing 120, to protect the structural integrity of the evaporator cartridge housing 120 and prevent melting or other deformation of the evaporator cartridge 120. Heat shields 518 can also help maintain a constant temperature in the heating section 504 by trapping heat in the heating section 504, preventing or limiting heat loss during evaporation. In some implementations, the evaporator cartridge 120 can also or alternatively include a heat shield 518A that is separate from the heating element 500 (see FIG. 102).

As noted above, the heating element 500 includes at least two cartridge contacts 124 that form the end portion of each of the legs 506. For example, as shown in Figs. 45-48, the cartridge contacts 124 may form a portion of the legs 506 that are bent along a bend line 507. The cartridge contacts 124 may be bent at an angle of approximately 90 degrees relative to the legs 506. In some implementations, the cartridge contacts 124 may be bent at other angles, such as an angle of approximately 15 degrees, 25 degrees, 35 degrees, 45 degrees, 55 degrees, 65 degrees, 75 degrees, or other intervals therebetween, relative to the legs 506. The cartridge contacts 124 may be bent toward/away from the heating area 504, depending on the implementation. Cartridge contacts 124 may also be formed on another portion of the heating element 500, for example, along the length of at least one of the legs 506. Cartridge contacts 124 are configured to be exposed to the environment when assembled in the vaporizer cartridge 120 (see FIG. 53).

The cartridge contacts 124 may form conductive pins, lobes, posts that accommodate holes or surfaces for the pins or posts, or other contact configurations. Some types of cartridge contacts 124 may include springs or other biasing elements to provide better physical and electrical contact between the cartridge contacts 124 on the vaporizer cartridge and the socket contacts 125 on the vaporizer housing 110. In some implementations, the cartridge contacts 124 include self-cleaning contacts that are configured to clean the connection between the cartridge contacts 124 and other contacts or a power source. For example, the self-cleaning contacts may include two parallel but offset projections that frictionally engage and slide against each other in a direction that is parallel or perpendicular to the direction of insertion.

The cartridge contacts 124 are configured to engage the socket contacts 125 located at the base of the cartridge socket of the vaporizer 100 such that the cartridge contacts 124 and the socket contacts 125 form an electrical connection when the vaporizer cartridge 120 is inserted into and connected to the cartridge socket 118. The cartridge contacts 124 may be electrically connected to the vaporizer power source 112 (e.g., via the socket contacts 125, etc.). The circuit completed with these electrical connections can provide electrical current to the resistive heating element to heat at least a portion of the heating element 500 and can also be used for additional functions, such as measuring the resistance of the resistive heating element for use in determining and/or regulating the temperature of the resistive heating element based on the thermal coefficient of resistivity of the resistive heating element, identifying the cartridge based on one or more electrical characteristics of the resistive heating element or other circuitry of the vaporizer cartridge, etc.

The cartridge contacts 124 may be treated, as described in more detail below, to provide improved electrical properties (e.g., contact resistance) using, for example, conductive coatings, surface treatments, and/or deposited materials.

In some implementations, the heating element 500 may be processed through a sequence of crimping and/or bending operations to give the heating element 500 a desired three-dimensional shape. For example, the heating element 500 may be preformed to receive or crimp around a wick element 162 to secure the wick element between at least two portions (e.g., approximately parallel portions) of the heating element 500 (e.g., between opposing portions of the heating region 504). To crimp the heating element 500, the heating element 500 may be bent along fold lines 520 toward each other. Bending the heating element 500 along the fold lines 520 forms a platform portion 524 of the prongs defined by the area between the fold lines 520 and the side portions 526 of the prongs defined by the area between the fold lines 520 and the outer edges 503 of the prongs 502. The platform portion 524 of the prongs is configured to contact one end of the wick element 162. The side portions 526 of the prongs are configured to contact opposite sides of the wick element 162. The platform portion 524 of the prongs and the side portions 526 of the prongs form a pocket that is configured to receive the wick element 162 and/or conform to the shape of at least a portion of the wick element 162. The pocket allows the wick element 162 to be attached to and retained by the heating element 500 in the pocket. The platform portion 524 of the prongs and the side portions 526 of the prongs contact the wick element 162 to provide multidimensional contact between the heating element 500 and the wick element 162. The multidimensional contact between the heating element 100 and the wick element 162 provides for more efficient and/or rapid transfer of the vaporizable material from the reservoir 140 of the vaporizer cartridge 120 to the heating section 504 (via the wick element 162) for vaporization.

In some implementations, portions of the legs 506 of the heating element 500 may also be bent along fold lines 522 away from each other. Bending portions of the legs 506 of the heating element 500 along fold lines 522 away from each other locates the legs 506 in a position spaced apart from the heating portion 504 (and prongs 502) of the heating element 500 in a first and/or second direction opposite the first direction (e.g., in the same plane). Thus, bending portions of the legs 506 of the heating element 500 along fold lines 522 away from each other separates the heating portion 504 from the vaporizer cartridge body 120. FIG. Fig. 46 illustrates a schematic of a heating element 500 that has been bent along fold lines 520 and fold lines 522 around a wick element 162. As shown in Fig. 46, the wick element is located within a pocket formed by bending the heating element 500 along fold lines 520 and 522.

In some implementations, the heating element 500 may also be bent along the bend lines 523.

For example, the cartridge contacts 124 may be bent toward each other (into and out of the plane of the drawing shown in FIG. 47) along fold lines 523. The cartridge contacts 124 may be exposed to the environment to contact the socket contacts while the remaining portions of the heating element 500 are located within the evaporator cartridge 120 (see FIGS. 48 and 53).

In use, when a user takes a puff on the mouthpiece 130 of the vaporizer cartridge 120, when the heating element 500 is assembled in the vaporizer cartridge 120, air flows into the vaporizer cartridge and along the air channel. In association with a user's puff, the heating element 500 may be activated, for example, by automatically detecting a puff using a pressure sensor, by detecting a user pressing a button, signals generated by a motion sensor, a flow sensor, a capacitive lip sensor, and/or other method capable of detecting that the user is taking or about to take a puff or otherwise inhaling air to cause air to enter the vaporizer 100 and travel at least along the air channel. Power may be supplied from the vaporizer to the heating element 500 at the contacts 124 of the cartridge when the heating element 500 is activated.

When the heating element 500 is activated, a temperature increase occurs due to the current flowing through the heating element 500 to generate heat. The heat is transferred to some portion of the vaporized material by conductive, convective, and/or radiative heat transfer, such that at least a portion of the vaporized material is vaporized.

Heat transfer may occur to the vaporizable material in the reservoir and/or to the vaporizable material drawn into the wick element 162 held by the heating element 500. In some implementations, the vaporizable material may vaporize along one or more edges of the prongs 502, as mentioned above. Air entering the vaporizer flows along an air channel over the heating element 500, removing the vaporized vaporizable material from the heating element 500. The vaporized vaporizable material may condense due to cooling, pressure changes, etc., such that it exits the mouthpiece 130 in the form of an aerosol for inhalation by the user.

As noted above, the heating element 500 can be made of a variety of materials, such as nichrome, stainless steel, or other resistive heating materials. Combinations of two or more materials can be incorporated into the heating element 500, and such combinations can include both a uniform distribution of the two or more materials throughout the heating element, and other configurations in which the relative amounts of the two or more materials are spatially non-uniform.

For example, the prongs 502 may have portions that are more resistive and thus designed to become hotter than other sections of the prongs or heating element 500. In some implementations, at least the prongs 502 (e.g., within the heating region 504) may include a material that has high conductivity and thermal resistance.

The heating element 500 may be completely or selectively coated with one or more materials. Because the heating element 500 is made of a thermally and/or electrically conductive material, such as stainless steel, nichrome, or other thermally and/or electrically conductive alloy, the heating element 500 may be subject to electrical or thermal losses in the path between the cartridge contacts 124 and the teeth 502 at the heating section 504 of the heating element 500. To reduce the heat and/or electrical losses, at least a portion of the heating element 500 may be coated with one or more materials to reduce resistance in the electrical path leading to the heating section 504. In some embodiments of the claimed subject matter, it is useful to leave the heating area 504 (e.g., the teeth 502) uncoated, while at least a portion of the legs 506 and/or contacts 124 of the cartridge are coated with a coating material that reduces the resistance (e.g., one or both of the volume and contact resistance) in these portions.

For example, the heating element 500 may include various portions that are coated with various materials. In another example, the heating element 500 may be coated with layered materials. Coating at least a portion of the heating element 500 helps to concentrate the current flowing to the heating region 504 to reduce electrical and/or thermal losses in other portions of the heating element 500. In some implementations, it is desirable to maintain a low electrical path resistance between the cartridge contacts 124 and the teeth 502 of the heating element 500 to reduce electrical and/or thermal losses in the electrical path and to compensate for the voltage drop that is concentrated in the heating region 504.

In some implementations, the cartridge contacts 124 may be selectively coated. Selectively coating the cartridge contacts 124 with certain materials may minimize or eliminate contact resistance at the point where measurements are made and electrical contact is made between the cartridge contacts 124 and the socket contacts. Providing low resistance at the cartridge contacts 124 may provide more accurate voltage, current, and/or resistance measurements and readings, which may be useful for accurately determining the current actual temperature of the heating area 504 of the heating element 500.

In some implementations, at least a portion of the cartridge contacts 124 and/or at least a portion of the legs 506 may be coated with one or more external coating materials 550. For example, at least a portion of the cartridge contacts 124 and/or at least a portion of the legs 506 may be coated with at least gold or another material that provides low contact resistance, such as platinum, palladium, silver, copper, and the like.

In some implementations, in order for the low-resistance outer coating material to be attached to the heating element 500, the surface of the heating element 500 may be coated with an adhesive coating material. In such configurations, the adhesive coating material may be applied to the surface of the heating element 500, and the outer coating material may be deposited onto the adhesive coating material, defining first and second coating layers, respectively.

The adhesive coating material includes a material with adhesive properties when the outer coating material is deposited on the adhesive coating material. For example, the adhesive coating material may include nickel, zinc, aluminum, iron, alloys thereof, and the like. On

Fig. 79-81 show examples of a heating element 500 in which the contacts 124 of the cartridge have been selectively coated with an adhesive coating material and/or an outer coating material.

In some implementations, the surface of the heating element 500 may be primed for application of an outer coating material to the heating element 500, using a primer instead of applying an adhesive coating material to the surface of the heating element 500.

For example, the surface of the heating element 500 may be primed using etching instead of depositing an adhesive coating material.

In some embodiments, all or a portion of the cartridge legs 506 and contacts 124 may be coated with an adhesive coating material and/or an outer coating material. In some examples, the cartridge contacts 124 may include at least a portion having an outer coating material that is thicker than the other portions of the cartridge contacts 124 and/or the legs 506 of the heating element 500. In some embodiments, the cartridge contacts 124 and/or the legs 506 may be thicker than the teeth 502 and/or the heating section 504.

In some implementations, instead of forming the heating element 500 from a single substrate material and coating the substrate material, the heating element 500 may be formed from different materials that are bonded together (e.g., by laser welding, diffusion processes, etc.). The materials of each portion of the heating element 500 that is bonded together may be selected to provide low or no resistance at the cartridge contacts 124 and high resistance at the heating teeth 502 or region 504 relative to other portions of the heating element 500.

In some implementations, the heating element 500 may be electroplated with silver paint or by spraying using one or more coating materials, such as an adhesive coating material and an outer coating material.

As mentioned above, the heating element 500 can have various shapes, sizes and geometries to more effectively heat the heating area 504 of the heating element 500 and more effectively evaporate the evaporated material.

Fig. 49-53 shows an example of a heating element 500 consistent with embodiments of the claimed subject matter. As shown, the heating element 500 includes one or more prongs 502 disposed on a heating region 504, one or more legs 506 extending from the prongs 502, cartridge contacts 124 formed at the end of each of the one or more legs 506, and heat shields 518 extending from the one or more legs 506. In this example, each of the prongs 502 has the same or similar shape and size. The prongs 502 have a rectangular and/or flat outer edge 503. In Fig. 49-52, the prongs 502 are crimped around a wick element 162 (e.g., a flat gasket) to secure the wick element 162 within the pocket of the prongs 502.

Fig. 54-55 shows another example of a heating element 500, consistent with embodiments of the claimed subject matter, in an unbent position (Fig. 54) and in a bent position (Fig. 55).

As shown, the heating element 500 includes one or more prongs 502 located in the heating area 504, one or more legs 506 extending from the prongs 502, cartridge contacts 124 formed at the end of each of the one or more legs 506, and heat shields 518 extending from the one or more legs 506. In this example, each of the prongs 502 has the same or similar shape and size, and the prongs 502 have a rounded and/or semi-circular outer edge 503.

Fig. 56 shows another example of a heating element 500 in a bent position consistent with embodiments of the claimed subject matter, which is similar to the exemplary heating element 500 shown in Figs. 54-55, but in this example, each of the prongs 502 has the same or similar shape and size, and the prongs 502 have a rectangular and/or flat outer edge 503.

Fig. 57-62 show other examples of a heating element 500 in which at least one of the teeth 502 has a size, shape, or position that is different from the other teeth 502. For example, as shown in Fig. 57-58, the heating element 500 includes one or more teeth 502 located in a heating region 504, one or more legs 506 extending from the teeth 502, and cartridge contacts 124 formed at the end of each of the one or more legs 506. In this example, the teeth 502 include a first set of teeth 505A and a second set of teeth 5058. The first and second sets of teeth 505A, 5058 are offset from each other. For example, the outer edges 503 of the first and second sets of teeth 505A, 5058 are not aligned with each other. As shown in Fig. 58, when the heating section 504 is in the bent position, the first set of teeth 505A is shorter than the second set of teeth 5058 in the first portion of the heating element 500, and the first set of teeth 505A is longer than the second set of teeth 5058 in the second portion of the heating element 500.

As shown in Fig. 59-60, the heating element 500 includes one or more prongs 502 located in the heating area 504, one or more legs 506 extending from the prongs 502, and cartridge contacts 124 formed at the end of each of the one or more legs 506. In this example, the prongs 502 include a first set of prongs 509A and a second set of prongs 5098. The first and second sets of prongs 509A, 5098 are offset from each other. For example, the outer edges 503 of the first and second sets of prongs 509A, 5098 are not aligned with each other. In this case, the second set of prongs 5098 includes a single outer prong 502A. As shown in Fig. 59-60, when the heating section 504 is in the bent position, the first set of teeth 5209A is longer than the second set of teeth 5098. In addition, in Fig. 59-60, the teeth 502 are not bent. Instead, the teeth 502 are located on the first section and on a second section of the heating element 500, which is located approximately parallel and opposite the first section. The first set of teeth located on the first section of the heating element 500 is separated from the second set of teeth located on the second section of the heating element 500 by a platform portion 530, which is located between and spaced apart from the first and second sets of teeth. The platform portion 530 is configured to contact the end of the wick element 162. The platform portion 530 includes a cutout portion 532. The cutout portion 532 may provide additional edges along which vaporizable material may vaporize when the heating element 500 is activated.

As shown in Fig. 61-62, the heating element 500 includes one or more teeth 502,

located at the heating section 504, one or more legs 506 extending from the prongs 502, and cartridge contacts 124 formed at the end portion of each of the one or more legs 506. In this example, the prongs 502 include a first set of prongs 509A and a second set of prongs 5098. The first and second sets of prongs 509A, 5098 are offset from each other. For example, the outer edges 503 of the first and second sets of prongs 509A, 5098 are not aligned with each other. In this case, each of the first and second sets of prongs 509A, 509B includes two prongs 502. As shown in FIG. 61-62, when the heating section 504 is in the bent position, the first set of teeth 509A is shorter than the second set of teeth 509B. Also, in Fig. 61-62, the teeth 502 are not bent. Instead, the teeth 502 are located on a first section and a second section (which is parallel and opposite to the first section) of the heating element 500. The first set of teeth located on the first section are separated from the second set of teeth located on the second section by a platform portion that is located between and spaced apart from the first and second sets of teeth. The platform portion is configured to contact the end of the wick member 162. The platform portion includes a cutout portion. The cutout portion may provide additional edges along which the vaporizable material can vaporize when the heating element 500 is activated.

63-68 show another example of a heating element 500 consistent with embodiments of the present invention in an unbent position (FIG. 63) and in a bent position (FIGS. 64-68). As shown, the heating element 500 includes one or more prongs 502 disposed on a heating portion 504, one or more legs 506 extending from the prongs 502, cartridge contacts 124 formed at the end of each of the one or more legs 506, and heat shields 518 extending from the one or more legs 506. In this example, the heating element 500 is configured to be compressed and/or bent to accommodate a cylindrical wick element 162 or a wick element 162 with a circular cross-section. Each of the prongs 502 has openings 540. The openings 540 may provide additional edges along which the evaporable material may evaporate when the heating element 500 is activated. The openings 540 also reduce the amount of material used to form the heating element 500, reducing the weight of the heating element 500 and the amount of material used for the heating element 500, thereby reducing the cost of the material.

Fig. 69-78 show a heating element 500 consistent with embodiments of the claimed subject matter in which the heating element 500 is pressed against one side of the wick element 162.

As shown, the heating element 500 includes one or more prongs 502 located on the heating section 504, one or more legs 506 extending from the prongs 502, and cartridge contacts 124 formed at the end of each of the one or more legs 506. In these examples, the legs 506 and cartridge contacts 124 are configured to bend in a third direction rather than in the first and second directions that are perpendicular to the third direction. In such a configuration, the prongs 502 of the heating section 504 form a planar platform that faces outwardly from the heating element 500 and is configured to press against the wick element 162 (e.g., on one side of the wick element 162).

Fig. 71-74 illustrate several examples of a heating element 500 consistent with embodiments of the claimed subject matter that include prongs 502 configured in various geometries. As mentioned above, prongs 502 form a planar platform that is pressed against one side of wick element 162 when in use. Legs 506, not prongs 502, are bent into a bent position.

Fig. 75 illustrates an example of the heating element 500 shown in Fig. 71 assembled with a component of a vaporizer cartridge 120, such as a wick housing (e.g., wick housing 178), which houses the wick element 162 and the heating element 500, and Fig. 76 illustrates the heating element 500 assembled with an exemplary vaporizer cartridge 120 consistent with embodiments of the claimed subject matter. As shown, the cartridge contacts 124 are bent toward each other in a transverse direction.

Fig. 77 and 78 illustrate another example of a heating element 500 in which the prongs 502 form a platform that is configured to press against the wick element 162. Here, the legs 506 may form spring structures that cause the prongs 502 to press against the wick element 162 when a transverse inward force is applied to each of the legs 506. For example, Fig. 78 illustrates an example of the prongs 502 pressed against the wick element 162 when power (e.g., current) is applied to the heating element 500, for example, via the contacts 124 of the cartridge.

Fig. 82-86 illustrate another example of a heating element 500 consistent with embodiments of the present invention. As shown, the heating element 500 includes one or more prongs 502 disposed on a heating portion 504, one or more legs 506 extending from the prongs 502, and cartridge contacts 124 formed at an end portion and/or as a portion of each of the one or more legs 506. In this example, each of the prongs 502 is of the same or similar shape and size, and they are spaced apart from each other by equal distances. The prongs 502 have a rounded outer edge 503.

As shown in Fig. 85, the teeth 502 have been crimped around the wick element 162 (e.g., a flat gasket) to secure the wick element 162 within the pocket formed by the teeth.

502. For example, the prongs 502 may be bent and/or compressed to define a pocket in which the wick element 162 is located. The prongs 502 include a platform portion 524 of the prongs and side portions 526 of the prongs. The platform portion 524 of the prongs is configured to contact one side of the wick element 162, and the side portions 526 of the prongs are configured to contact the other opposite sides of the wick element 162. The platform portion 524 of the prongs and the side portions 526 of the prongs form a pocket that is configured to receive the wick element 162 and/or conform to the shape of at least a portion of the wick element 162. The pocket allows the wick element 162 to be secured and retained by the heating element 500 in the pocket.

In some implementations, the side portions 526 of the prongs and the platform portion 524 of the prongs retain the wick element 162 by compression (e.g., at least a portion of the wick element 162 is compressed between opposing side portions 526 of the prongs (the lip of the platform portion 524 of the prongs). The platform portion 524 of the prongs and the side portions 526 of the prongs contact the wick element 162 to provide multidimensional contact between the heating element 500 and the wick element 162. The multidimensional contact between the heating element 500 and the wick element 162 provides for more efficient and/or rapid transfer of the vaporizable material from the reservoir 140 of the vaporizer cartridge 120 to the heating section 504 (via the wick element 162) for vaporization.

One or more legs 506 of the exemplary heating element 500 shown in Figs. 82-86 include four legs 506. Each of the legs 506 may include and/or define a cartridge contact 124 that is configured to contact a corresponding contact 125 of the evaporator socket 190. In some implementations, each pair of legs 506 (and cartridge contacts 124) may contact a single socket contact 125. The legs 506 may be spring-loaded to enable the legs 506 to maintain contact with the socket contacts 125. The legs 506 may include a portion extending along the length of the legs 506 that is bent to assist in maintaining contact with the socket contacts 125.

The springiness of the legs 506 and/or the curvature of the legs 506 may help to increase and/or maintain constant pressure between the legs 506 and the socket contacts 125. In some implementations, the legs 506 are connected to a support 176 that helps to increase and/or maintain constant pressure between the legs 506 and the socket contacts 125. The support 176 may include plastic, rubber, or other materials to help maintain contact between the legs 506 and the socket contacts 125. In some implementations, the support 176 is formed as part of the legs 506.

The legs 506 may contact one or more self-cleaning contacts that are designed to clean the connection between the contacts 124 of the cartridge and other contacts or the power source.

For example, self-cleaning contacts may include at least two parallel but offset projections that frictionally engage and slide relative to each other in a direction that is parallel or perpendicular to the direction of insertion.

As shown in Figs. 82-98, one or more legs 506 of the heating element 500 include four legs 506. Figs. 91-92, 97A-988, and 109-110 show examples of the heating element 500 in an unbent position. As shown, the heating element 500 has an H-shaped shape defined by the four legs 506 and the prongs 502. This configuration allows for more accurate measurement of resistance in the heater and reduces variability in resistance measurements, thereby providing more efficient aerosol generation and higher quality aerosol generation. The heating element 500 includes two pairs of opposing legs 506. The prongs 502 are connected (e.g., intersect) with each pair of opposing legs 506 at or near the center of each pair of opposing legs 506. The heating area 504 is located between the pairs of opposing legs 506.

Fig. 109 illustrates an example of a heating element 500 before the heating element 500 has been stamped and/or otherwise formed from the substrate material 577. Excess substrate material 577A may be connected to the heating element 500 at one, two, or more connection locations 5778. For example, as shown, excess substrate material 577A may be joined to heating element 500 at two joining locations 577B, near opposite transverse ends 173 of heating element platform portion and/or heating portion 504 of heating element 500. In some implementations, heating element 500 may be first stamped from substrate material 577 and then separated from excess substrate material 577A at joining locations 577B (e.g., by twisting, drawing, punching, cutting, etc. of heating element 500).

As noted above, to compress the heating element 500, the heating element 500 may be bent or otherwise folded along the fold lines 523, 522A, 5228, 520 in a direction toward/away from each other (see, for example, FIG. 98A). Although the fold lines are shown in FIG. 98A, the exemplary heating elements 500 described and illustrated in FIGS. 44A-115C may also be compressed, folded, or otherwise folded along the fold lines. Bending the heating element 500 along the fold lines 520 forms a platform portion 524 of the prongs defined by the area between the fold lines 520 and/or between the side portions 526 of the prongs defined by the area between the fold lines 520 and the outer edges 503 of the prongs 502. The platform portion 524 of the prongs may contact one end and/or support one end of the wick element 162. The side portions 526 of the prongs may contact opposite sides of the wick element 162. The platform portion 524 of the prongs and the side portions 526 of the prongs define an interior volume of the heating element that forms a pocket that is configured to receive the wick element 162 and/or conform to the shape of at least a portion of the wick element 162. The interior volume allows the wick element to be secured and held in place. 162 heating element 500 in the pocket. The platform portion 524 of the prongs and the side portions 526 of the prongs contact the wick element 162 to provide multidimensional contact between the heating element 500 and the wick element 162. The multidimensional contact between the heating element 500 and the wick element 162 provides for more efficient and/or rapid transfer of the vaporizable material from the reservoir 140 of the vaporizer cartridge 120 to the heating section 504 (via the wick element 162) for vaporization.

In some implementations, portions of the legs 506 of the heating element 500 may also be bent along fold lines 522A, 522B. Bending portions of the legs 506 of the heating element 500 along fold lines 522 away from each other positions the legs 506 in a position remote from the heating portion 504 (and prongs 502) of the heating element 500 in a first and/or second direction opposite the first direction (e.g., in the same plane). Thus, bending portions of the legs 506 of the heating element 500 along fold lines 522 away from each other separates the heating portion 504 from the vaporizer cartridge body 120. Bending portions of the legs 506 along fold lines 522A, 522B forms a bridge 585. In some implementations, the bridge 585 helps to reduce or eliminate the leakage of vaporized material from the heating region 504, for example, due to capillary action. The bridge 585 also helps to isolate the heating region 504 from the legs 506, so that heat generated at the heating region 504 does not reach the legs 506. It also helps to localize the heating of the heating element 500 at the heating region 504.

In some implementations, the heating element 500 may also be bent along fold lines 523 to form cartridge contacts 124. The cartridge contacts 124 may be exposed to the environment or may be otherwise accessible (and may be located within a portion of the cartridge, such as an outer shell) to contact the socket contacts, while other portions, such as the heating portion 504 of the heating element 500, are located in an inaccessible portion of the vaporizer cartridge 120, such as the wick housing.

In some implementations, the legs 506 include retaining portions 180 that are configured to bend around at least a portion of the wick body 178 that surrounds at least a portion of the wick element 162 and the heating element 500 (such as the heating region 504). The retaining portions 180 form the end of the legs 506. The retaining portions 180 assist in securing the heating element 500 and the wick element 162 to the wick body 178 (and the vaporizer cartridge 120).

The retaining portions 180 may alternatively be bent away from at least a portion of the wick body 178.

Fig. 87-92 illustrate another example of a heating element 500 consistent with embodiments of the claimed subject matter. As shown, the heating element 500 includes one or more prongs 502 disposed on a heating region 504, one or more legs 506 extending from the prongs 502, and cartridge contacts 124 formed at an end portion and/or as part of each of the one or more legs 506.

The prongs 502 may be bent and/or crimped to define a pocket in which the wick element 162 is located (e.g., a flat gasket). The prongs 502 include a platform portion 524 of the prongs and side portions 526 of the prongs. The platform portion 524 of the prongs is configured to contact one side of the wick element 162, and the side portions 526 of the prongs are configured to contact the other opposite sides of the wick element 162. The platform portion 524 of the prongs and the side portions 526 of the prongs form a pocket that is configured to receive the wick element 162 and/or conform to the shape of at least a portion of the wick element 162. The pocket allows the wick element 162 to be attached to and retained by the heating element 500 in the pocket.

In this example, the teeth 502 have different shapes and sizes and are spaced apart from each other by the same or different distances. For example, as shown, each of the side portions 526 of the teeth includes at least four teeth 502. In the first pair 570 of adjacent teeth 502, each of the adjacent teeth 502 is spaced the same distance from an inner portion 576 located near the platform portion 524 of the teeth to an outer portion 578 located near the outer edge 503. In the second pair 572 of adjacent teeth 502, the adjacent teeth 502 are spaced apart from each other by a distance that varies from the inner portion 576 to the outer portion 578. For example, the adjacent teeth 502 of the second pair 572 of teeth are spaced apart by a width that is greater in the inner portion 576 than in the outer portion 578. These configurations can help maintain a consistent and uniform temperature along the length of the teeth 502 of the tooth section 504. heating.

Maintaining a constant temperature along the length of the teeth 502 can provide a higher quality aerosol, since the maximum temperature will be more uniform throughout the heating area 504.

As noted above, each of the legs 506 may include and/or define a cartridge contact 124 that is configured to contact a corresponding contact 125 of the vaporizer housing 100. In some implementations,

each pair of legs 506 (and cartridge contacts 124) may contact one socket contact 125. In some implementations, legs 506 include retention portions 180 that are configured to flex and generally extend away from heating portion 504. Retention portions 180 are configured to receive corresponding recesses in wick housing 178. Retention portions 180 form the end of legs 506. Retention portions 180 assist in securing heating element 500 and wick element 162 to wick housing 178 (and vaporizer cartridge 120). The holding portions 180 may have an end portion 180A that extends from the end of the holding portion 180 to the heating portion 504 of the heating element 500. This configuration reduces the likelihood that the holding portion will contact another portion of the vaporizer cartridge 120 or a cleaning device for cleaning the vaporizer cartridge 120.

The outer edge 503 of the teeth 502 at the heating section 504 may include a petal 580. The petal 580 may include one, two, three, four, or more petals 580. The petal 580 may extend outwardly from the outer edge 503 and extend outwardly from the center of the heating element 500.

For example, a petal 580 may be disposed along an edge of the heating element 500 surrounding an interior volume defined by at least the side portions 526 of the prongs for receiving the wick element 162. The petal 580 may extend outwardly away from the interior volume of the wick element 162. The petal 580 may also extend in a direction opposite the platform portion 524 of the prongs. In some implementations, the petals 580 disposed on opposite sides of the interior volume of the wick element 162 may extend away from each other.

This configuration helps to widen the opening that leads into the interior of the wick element 162, thereby helping to reduce the likelihood that the wick element 162 will be caught, torn, and/or damaged when assembled with the heating element 500. Due to the material of the wick element 162, the wick element 162 can easily be caught, torn, and/or otherwise damaged when assembled (e.g., positioned or inserted therein) with the heating element 500. Contact between the wick element 162 and the outer edge 503 of the teeth 102 can also cause damage to the heating element. The shape and/or location of the petal 580 may facilitate easier placement of the wick element 162 within the pocket (e.g., the interior volume of the heating element 500) formed by the teeth 502, thereby preventing or reducing the likelihood that the wick element 162 and/or the heating element will be damaged. Thus, the petals 580 help reduce or prevent damage to the heating element 500 and/or the wick element 162 when the wick element 162 comes into thermal contact with the heating element 500. The shape of the petal 580 also helps minimize the impact on the resistance of the heating section 504.

In some implementations, at least a portion of the cartridge contacts 124 and/or at least a portion of the legs 506 may be coated with one or more outer coating materials 550 to reduce contact resistance at the point where the heating element 500 contacts the contacts 125.

Fig. 93A-988 illustrate another example of a heating element 500 consistent with embodiments of the claimed subject matter. As shown, the heating element 500 includes one or more prongs 502 disposed on a heating region 504, one or more legs 506 extending from the prongs 502, and cartridge contacts 124 formed at the end portion and/or as part of each of the one or more legs 506.

The prongs 502 may be bent and/or crimped to define a pocket in which the wick element 162 is located (e.g., a flat gasket). The prongs 502 include a platform portion 524 of the prongs and side portions 526 of the prongs. The platform portion 524 of the prongs is configured to contact one side of the wick element 162, and the side portions 526 of the leg are configured to contact the other opposite sides of the wick element 162. The platform portion 524 of the prongs and the side portions 526 of the prongs form a pocket that is configured to receive the wick element 162 and/or conform to the shape of at least a portion of the wick element 162. The pocket allows the wick element 162 to be attached to and retained by the heating element 500 in the pocket.

In this example, the teeth 502 are of the same shape and size and are spaced apart by the same distance. In this case, the teeth 502 include a first side portion 526A and a second side portion 5268 that are separated from each other by a platform portion 524 of the teeth. Each of the first and second side portions 526A, 5268 of the teeth includes an inner portion 576 located near the platform portion 524 of the teeth and an outer portion 578 located near the outer edge 503. In the outer portion 578, the first side portion 526A of the teeth is located approximately parallel to the second side portion 5268B of the teeth. In the inner region 576, the first side portion 526A of the teeth is offset from the second side portion 5268 of the teeth, and the first and second side portions 526bA, 5268 of the teeth are not parallel. This configuration can help maintain a constant and uniform temperature along the length of the teeth 502 of the heating region 504. Maintaining a constant temperature along the length of the teeth 502 can provide a higher quality aerosol because the maximum temperature will be more uniform throughout the heating region 504.

As noted above, each of the legs 506 may include and/or define a cartridge contact 124 that is configured to contact a corresponding contact 125 of the vaporizer housing 100. In some implementations,

each pair of legs 506 (and cartridge contacts 124) may contact one socket contact 125. In some implementations, legs 506 include retention portions 180 that are formed by bending and generally extending from heating portion 504. Retention portions 180 are configured to be positioned in a corresponding recess in wick housing 178. Retention portions 180 form the end of legs 506. Retention portions 180 assist in attaching heating element 500 and wick element 162 to wick housing 178 (and vaporizer cartridge 120). The holding portions 180 may have an end portion 180A that extends from the end of the holding portion 180 to the heating portion 504 of the heating element 500. This configuration reduces the likelihood that the holding portion will contact another portion of the vaporizer cartridge 120 or a cleaning device for cleaning the vaporizer cartridge 120.

The outer edge 503 of the teeth 502 at the heating section 504 may include a petal 580. The petal 580 may extend outwardly from the outer edge 503 and extend outwardly from the center of the heating element 500. The petal 580 may be configured to facilitate easier positioning of the wick element 162 within the pocket formed by the teeth 502, thereby preventing or reducing the likelihood of the wick element 162 catching on the outer edge 503. The shape of the petal 580 helps minimize the impact on the resistance of the heating section 504.

In some implementations, at least a portion of the cartridge contacts 124 and/or at least a portion of the legs 506 may be coated with one or more outer coating materials 550 to reduce contact resistance at the point where the heating element 500 contacts the socket contacts 125.

Fig. 99-100 illustrate an example of a sprayer assembly 141 with a heating element 500 assembled with a wick housing 178, and Fig. 101 illustrates an exploded view of the sprayer assembly 141 consistent with embodiments of the present invention. The wick housing 178 may be made of plastic, polypropylene, or the like. The wick housing 178 includes four recesses 592 in which at least a portion of each of the legs 506 of the heating element 500 may be located and secured. As shown, the wick housing 178 also includes an opening 593 that provides access to an interior volume 594 in which at least the heating portion 504 of the heating element 500 and the wick element 162 are located.

The wick housing 178 may also include a separate heat shield 5184A, which is shown in Fig. 102.

A heat shield 518A is disposed within an interior volume 594 within the wick housing 178 between the walls of the wick housing 178 and the heating element 500. The heat shield 518A is formed to at least partially surround the heating portion 504 of the heating element 500 and separate the heating element 500 from the side walls of the wick housing 178. The heat shield 518A may assist in insulating the heating portion 504 from the evaporator cartridge housing 120 and/or the wick housing 178.

The heat shield 518A helps minimize the effects of heat emanating from the heating section 504 on the evaporator cartridge housing 120 and/or the wick housing 178 to protect the structural integrity of the evaporator cartridge housing 120 and/or the wick housing 178 and prevent melting or other deformation of the evaporator cartridge 120 and/or the wick housing 178. The heat shield 518A can also help maintain a stable temperature in the heating section 504 by retaining heat in the heating section 504, thereby preventing or limiting heat loss.

The heat shield 518A includes one or more slots 590 (e.g., three slots) at one end that are aligned with one or more slots (e.g., one, two, three, four, five, six, or seven or more slots) 596 formed in a portion of the wick housing 178 opposite the opening 593, such as the base of the wick housing 178 (see FIGS. 100 and 112). The one or more slots 590, 596 provide a means for relieving pressure caused by the flow of liquid vaporizing material in the heating region 504 and the vaporization of the vaporizing material without affecting the flow of liquid vaporizing material.

In some implementations, flooding may occur between the heating element 500 (e.g., legs 506) and the outer wall of the wick housing 178 (or between parts of the heating element 500).

For example, liquid vaporized material may accumulate due to capillary pressure between the legs 506 of the heating element 500 and the outer wall of the wick housing 178, as shown by the fluid channel 599. In such cases, there may be sufficient capillary pressure to draw the liquid vaporized material from the reservoir and/or heating section 504. To help limit and/or prevent leakage of liquid vaporized material from the interior volume of the wick housing 178 (or heating section 504), the wick housing 178 and/or the heating element 500 may include a capillary element that causes a sudden change in capillary pressure, thereby forming a fluid barrier that prevents the passage of liquid vaporized material through the element without the use of an additional seal (e.g., a hermetic seal). The capillary element may define a capillary break formed by a sharp point, bend, curved surface, or other surface in the wick housing 178 and/or the heating element 500. The capillary element allows the conductive element (e.g., the heating element 500) to be positioned in both a wet and dry region.

The capillary element may be positioned on and/or form part of the heating element 500 and/or the wick housing 178 and cause a sudden change in capillary pressure. For example, the capillary element may include a bend, a sharp point, a curved surface, an angled surface, or other surface feature that causes a sudden change in capillary pressure between the heating element and the wick housing along the length of the heating element or other component of the vaporizer cartridge. The capillary element may also include a protrusion or other portion of the heating element and/or wick body that widens the capillary channel, such as a capillary channel formed between portions of the heating element, between the heating element and the wick body, and the like, sufficient to reduce the capillary pressure in the capillary channel (e.g., the capillary element separates the heating element from the wick body), such that the capillary channel does not draw liquid into the capillary channel. Thus, the capillary element prevents or limits the flow of liquid along the liquid channel beyond the capillary element due, at least in part, to the abrupt change and/or decrease in capillary pressure. The size and/or shape of a capillary element (e.g., a bend, a sharp point, a curved surface, an angled surface, a protrusion, and the like) may be a function of the contact angle formed between materials such as the heating element and the wick body or other walls of a capillary channel formed between the components, may be a function of the material of the heating element and/or the wick body or other component, and/or may be a function of the size of the gap formed between two components such as the heating element and/or the wick body defining the capillary channel, among other properties.

As an example, FIGS. 103A and 103B illustrate a wick body 178 having a capillary element 598 that causes a sudden change in capillary pressure. The capillary element 598 prevents or limits fluid flow along the fluid channel 599 beyond the capillary element 598 and helps prevent fluid from pooling between the legs 506 and the wick body 178. The capillary element 598 on the wick body 178 separates the heating element 500 (e.g., a component made of metal, etc.) from the wick body 178 (e.g., a component made of plastic, etc.), thereby reducing capillary forces between the two components. The capillary element 598 shown in FIG. 103A and 103B, also includes a sharp edge at the end of the angled surface of the wick body that restricts or prevents fluid from flowing past the capillary element 598.

As shown in Fig. 103B, the legs 506 of the heating element 500 may also be bent inwardly toward the interior volume of the heating element 500 and/or the wick housing 178.

The bent legs 506 may form a capillary element that helps limit or prevent fluid flow across the outer surface of the heating element and along the legs 506 of the heating element 500.

As another example, the heating element 500 may include a capillary element (e.g., a web 585) that is formed with one or more legs 506 and separates the legs 506 from the heating section 504 (see FIGS. 82-87). The web 585 may be formed by bending the heating element 500 along fold lines 520, 522. In some implementations, the web 585 helps to reduce or eliminate leakage of vaporized material from the heating section 504, for example, by capillary action. In some examples, such as the exemplary heating elements 500 shown in FIGS. 93A-988, the web 585 is bent at an angle and/or includes a bend to help restrict the flow of fluid from the heating section 504.

As another example, the heating element 500 may include a capillary element 598 that defines a sharp point to cause a sharp change in capillary pressure, thereby preventing the liquid vaporized material from passing past the capillary element. Fig. 104 shows an example of a heating element 500 having a capillary element 598 consistent with embodiments of the claimed subject matter. As shown in Fig. 104, the capillary element 598 may form a bridge end 585 that projects outwardly from the heating section a distance that is greater than the distance between the legs 506 and the heating section 504. The end of the bridge 585 may be a sharp edge to further help prevent the passage of liquid vaporized material to the legs 506 and/or from the heating section 504, thereby reducing leakage and increasing the amount of vaporized material that remains in the heating section 504.

Fig. 105-106 illustrate a variant of the heating element 500 shown in Fig. 87-92. In this variant of the heating element 500, the legs 506 of the heating element 500 include a bend at a bend region 511. The bend in the legs 506 may form a capillary element 598 that helps prevent liquid vaporized material from flowing past the capillary element 598. For example, the bend may create a sharp change in capillary pressure that may also help limit or prevent liquid vaporized material from flowing past the bend and/or pooling between the legs 506 and the wick body 178 and may help limit or prevent liquid vaporized material from flowing out of the heating region 504.

Fig. 107-108 illustrate a variation of the heating elements 500 shown in Fig. 93A-988. In this variation of the heating element 500, the legs 506 of the heating element 500 include a bend at a bend region 511. The bend in the legs 506 may form a capillary element 598 that helps prevent liquid vaporized material from flowing past the capillary element 598. For example, the bend may create a sharp change in capillary pressure that also helps limit or prevent liquid vaporized material from flowing past the bend and/or pooling between the legs 506 and the wick body 178 and may help limit or prevent liquid vaporized material from flowing out of the heating region 504.

Fig. 111A-112 illustrate another example of a spray assembly 141 with a heating element 500 assembled with a wick housing 178 and a heat shield 5184A, and Fig. 113 illustrates an exploded view of a spray assembly 141 consistent with embodiments of the present invention.

The wick housing 178 may be made of plastic, polypropylene, or the like. The wick housing 178 includes four recesses 592 in which at least a portion of each of the legs 506 of the heating element 500 may be located and secured. Within the recesses 592, the wick housing 178 may include one or more wick housing retaining members 172 (see FIG. 115A) that facilitate attachment of the heating element 500 to the wick housing 178, for example, by means of a snap-fit connection between at least a portion of the legs 506 of the heating element 500 and the wick housing retaining members 172. The wick housing retaining elements 172 may also assist in spacing the heating element 500 away from the surface of the wick housing 178 to assist in preventing heat from being applied to the wick housing and melting a portion of the wick housing 178.

As shown, the wick housing 178 also includes an opening 593 that provides access to an interior volume 594 in which at least the heating section 504 of the heating element 500 and the wick element 162 are located.

The wick housing 178 may also include one or more other cutouts that help space the heating element 500 away from the surface of the wick housing 178 to reduce the amount of heat that contacts the surface of the wick housing 178. For example, the wick housing 178 may include cutouts 170.

Cutouts 170 may be formed along the outer surface of the wick body 178 near the opening 593. Cutouts 170 may also include a capillary element, such as capillary element 598.

The capillary element of the cutouts 170 may define a surface (e.g., a curved surface) that interrupts the points of contact between adjacent (or intersecting) walls (such as the walls of the wick body).

The curved surface may have a radius sufficient to reduce or eliminate capillarity formed between adjacent outer walls of the wick body.

Referring to Fig. 111A-112, the wick body 178 may include a lobe 168. The lobe 168 may assist in proper positioning and/or orientation of the wick body during assembly of the vaporizer cartridge relative to one or more other components of the vaporizer cartridge. For example, the added material that creates the lobe 168 shifts the center of mass of the wick body 178. Due to the shifted center of mass, the wick body 178 may rotate or slide in a particular orientation to mate with a corresponding element of another component of the vaporizer cartridge during assembly.

Fig. 114A-114C illustrate an exemplary method of forming a vaporizer cartridge 120 atomizer assembly 141 including a wick housing 178, a wick element 162, and a heating element 500, consistent with embodiments of the claimed subject matter. As shown in Fig. 114A, the wick element 162 may be inserted into a pocket formed in the heating element 500 (e.g., formed by the side portions 526 of the prongs and the platform portion 524 of the prongs). In some embodiments, the wick element 162 expands after attachment to the heating element 500 when vaporizable material is introduced into the wick element 162.

Fig. 114B shows a wick element 162 and a heating element 500 coupled to a wick housing 178, and Fig. 114C shows an example of a wick element 162 and a heating element 500 assembled with a wick housing 178. At least a portion of the heating element 500, such as the heating section 504, may be located within the interior volume of the wick housing 178. Legs 506 (e.g., retaining portions 180) of the heating element 500 may be coupled to the exterior walls of the wick housing 178 by, for example, a snap-fit connection. In particular, the retaining portions 180 of the legs 506 may be coupled to and located at least partially within recesses in the wick housing 178.

Fig. 115A-115C illustrate another exemplary method of forming a vaporizer cartridge 120 atomizer assembly 141 including a wick housing 178, a wick element 162, and a heating element 500 consistent with embodiments of the claimed subject matter. As shown in Fig. 115A, the heating element 500 may be connected to the wick housing 178, for example, by inserting or otherwise positioning at least a portion of the heating element 500, such as a heating portion 504, within the interior volume of the wick housing 178. The legs 506 (e.g., the retaining portions 180) of the heating element 500 may be connected to the exterior walls of the wick housing 178 by, for example, a snap-fit connection. In particular, the retaining portions 180 or other portion of the legs 506 may be connected and located at least partially in recesses in the wick housing 178, for example, by connecting to the retaining elements 172 of the wick housing.

As shown in Fig. 1158, the wick element 162 can be inserted into a pocket formed in the heating element 500 (e.g., formed by the side portions 526 of the prongs and the platform portion 524 of the prongs). In some implementations, the wick element 162 is compressed when the wick element

162 is connected to the heating element 500. In some implementations, the wick element 162 is included in the heating element 500 and expands after attachment to the heating element 500 when the vaporizable material is introduced into the wick element 162.

Fig. 115C shows an example of a wick element 162 and a heating element 500 assembled with a wick housing 178 to form a spray assembly 141.

Fig. 116 illustrates an exemplary process 3600 for assembling a heating element 500 in accordance with embodiments of the claimed subject matter. Process flow diagram 3600 illustrates features of a method that may optionally include some or all of the following. At block 3610, a planar substrate with resistive heating properties is provided. At block 3612, the planar substrate may be cut and/or stamped into a desired geometry. At block 3614, at least a portion of the heating element 500 may be coated. For example, as mentioned above, at least a portion of the outer surface of the heating element 500 may be coated with one or more layers of a coating material (e.g., an adhesive coating material and/or an outer coating material). At block 3616, the heating portion 504 (e.g., the prongs 502) may be bent and/or otherwise compressed around the wick element to conform to the shape of the wick element and to secure the wick element to the heating element. At block 3618, the cartridge contacts 124, which in some embodiments form the end portion of the legs 506 of the heating element 500, may be bent in a first or second direction along a plane or in a third direction that is perpendicular to the first or second direction. At block 3620, the heating element 500 may be assembled to the vaporizer cartridge 120, and fluid communication may be provided between the wick element 162 and the vaporizable material reservoir. At block 3622, the vaporizable material may be drawn into a wick member 162, which may be positioned in contact with at least two surfaces of the heating portion 504 of the heating element 500. At block 3624, a heating means may be provided to the contacts 124 of the heating element cartridge to heat the heating element 500, at least the heating portion 504. The heating causes the vaporizable material to vaporize. At block 3626, the vaporized vaporizable material is carried in an air stream to a mouthpiece of the vaporizer cartridge in which the heating element is positioned.

Options for regulating, collecting and recycling condensate

Fig. 117-119C show embodiments of an evaporator cartridge that includes one or more features for regulating, collecting, and/or recycling condensate in the evaporator device. While the features described and shown in Fig. 117-119C may be incorporated into various embodiments of the evaporator cartridges described above and/or may include one or more features of various embodiments of the evaporator cartridges described above, the features of the evaporator cartridges described and shown in Fig. 117-119C may additionally and/or alternatively be incorporated into one or more other exemplary embodiments of the evaporator cartridges, such as those described below.

A typical approach by which a vaporizer generates an inhalable aerosol from a vaporized material involves heating the vaporized material in a vaporization chamber (or heating chamber) to cause the vaporized material to convert to a gas (or vapor) phase. A vaporization chamber typically refers to a region or volume within a vaporizer within which a heat source (e.g., conductive, convective, and/or radiant) causes the vaporized material to heat to produce a mixture of air and the vaporized vaporized material to form a vapor for inhalation by a user of the vaporizer.

Since the introduction of vaporizers to the market, vaporizer cartridges containing free liquid (i.e., liquid held in a reservoir and not held in a porous material) have become popular. Commercial products may either have cotton pads or no elements at all to collect the condensate produced by the vaporizer's steam generation.

The liquid from the condensation can form a film on the walls of the air duct and can travel up to the mouthpiece with the possibility of leaking into the user's mouth, which can cause an unpleasant practical experience. Even if the film from the wall does not leak from the mouthpiece, it can be carried by the air flow, creating large droplets that can enter the user's mouth and throat, resulting in an unpleasant practical experience for the user. Problems associated with using a cotton pad to absorb such condensate include inefficiency, as well as additional manufacturing and assembly costs to insert the cotton pad into the appropriate part of the vaporizer. In addition, the accumulation and loss of condensate and/or unvaporized vaporized material can ultimately lead to the inability to deliver all of the vaporized material to the vaporizing chamber, thereby wasting the vaporized material. In essence, improved vaporizers and/or vaporizer cartridges are desired.

The evaporation of vaporized material into an aerosol, as described in more detail below, can result in condensation collecting along one or more of the internal channels and outlets (e.g., along the mouthpiece) of some vaporizers. For example, such condensation may include vaporized material that has been drawn from a reservoir, formed into an aerosol, and condensed into condensate before exiting the vaporizer. In addition, vaporized material that has escaped the vaporization process may also accumulate along one or more of the internal channels and/or air outlets. This can result in condensation and/or unvaporized vaporized material exiting the mouthpiece outlet and settling in the user's mouth, thereby creating an unpleasant user experience and reducing the amount of aerosol inhaled. In addition, the accumulation and loss of condensate can ultimately result in the inability to remove all of the vaporized material from the reservoir to the vaporization chamber, thereby wasting the vaporized material. For example, when vaporized material particles accumulate in the internal channels of the air tube downstream of the vaporization chamber, the effective cross-sectional area of the air flow channel is narrowed, thereby increasing the air flow rate and thereby applying a drag force to the accumulated fluid, thereby increasing the potential to entrain fluid from the internal channels to the mouthpiece outlet. Various features and devices that provide improvements in connection with the above or overcome the problems described are described below.

As mentioned above, drawing vapor from the reservoir and vaporizing the vapor into an aerosol can result in the accumulation of vaporized material condensate near and/or within one or more of the outlet openings formed in the mouthpiece. This can result in the condensate exiting the outlet openings and settling in the user's mouth, thus creating both an unpleasant user experience and reducing the amount of vapor that would otherwise be available for consumption. Various features of a vaporizer device that provide improvements or overcome these problems are described below. For example, various features for controlling condensation in a vaporizer device are described herein that may provide advantages and improvements over existing approaches, while also introducing additional advantages as described herein.

For example, features of an evaporation device are described that are designed to collect and store condensate that forms or collects near the outlet of the mouthpiece, thereby preventing condensate from escaping from the outlet.

Alternatively or additionally, drawing the vaporizable material 102 from the reservoir 140 and vaporizing the vaporizable material into an aerosol may result in condensation collecting within one or more tubes or internal channels (such as an air tube) of the vaporizer. As will be discussed in more detail below, features of the vaporizer are described that are configured to capture condensation and prevent vaporizable material particles from escaping from the air outlet of the vaporizer cartridge.

Fig. 117 shows an embodiment of a vaporizer cartridge 120 that includes a finned (lamellar) condensate collector 352 configured to collect and store condensate that forms or collects near the mouthpiece outlet or other portion of the vaporizer cartridge 120, thereby preventing condensate from exiting the outlet. As shown in Fig. 117, the finned condensate collector 352 may be positioned in a chamber near the outlet 136 in the mouthpiece 130 such that the aerosol passes through the finned condensate collector 352 before exiting through the outlet 136.

Fig. 1118 shows an embodiment of a mouthpiece 330 including an embodiment of a finned condensate collector 352 having a plurality of microfluidic fins 354. The mouthpiece 330 may be configured for an evaporator cartridge (such as evaporator cartridge 120) and/or an evaporator device (such as evaporator 100) with microfluidic fins 354 disposed within the finned condensate collector 352 to enhance collection and retention of condensate within the evaporator cartridge.

As shown in Fig. 118, the microfluidic ribs 354 include a set of walls 355 or other protrusions and narrow grooves 353 that have microfluidic properties. In an exemplary embodiment, each wall in the set of walls 355 can be arranged parallel or substantially parallel to each other, such that the space between each wall creates grooves (grooves) 353 that define capillary channels. The walls 355 define or otherwise form one or more capillary channels or grooves configured to collect fluid or other condensate.

The mouthpiece 330 shown in Fig. 118 may enhance or otherwise alter the collection and retention of condensate in the reservoir such that condensate that flows from the outlet 332 of the air tube (e.g., the air tube or cannula 128 as shown in Fig. 117) may be captured or otherwise collected between the microfluidic fins 354 when the user inhales on the vaporizer. As mentioned, the microfluidic fins define one or more capillary channels through which liquid is collected by the capillary force generated when the liquid is within the capillary channel(s). To retain the fluid captured by the finned condensate collector 352 without being pulled out by the drag force of the air flow, the capillary force of the microfluidic fins can be greater than the drag force of the air flow, by creating narrow grooves or channels in which the fluid remains. For example, the effective width of the groove can be 0.3 mm and/or can be in the range of about 0.1 mm to about 0.8 mm.

One advantage of this configuration is that it eliminates the need for additional parts, thereby reducing the number of parts without sacrificing function. In one embodiment, the finned condensate collector and the mouthpiece can be made as a monolithic body using a single mold (e.g., a plastic mold). Alternatively, the finned condensate collector and the mouthpiece can be separate structures that are welded together to form the finned condensate collector. Other manufacturing methods and materials are within the scope of this disclosure.

In other embodiments, the microfluidic fins may be formed as a separate part and inserted into the mouthpiece. For example, the microfluidic fins may be formed in any part of the vaporizer or vaporizer cartridge to collect and store condensate. The microfluidic fins may be formed with the mouthpiece or may be formed as a second plastic part and inserted into the mouthpiece.

In addition to collecting in the mouthpiece, condensate of the vaporized material may accumulate in one or more air flow channels or internal channels of the vaporizer. Various features and devices that provide improvements or overcome the aforementioned problems are described below. For example, various features for recycling condensate in the vaporizer are described herein, such as embodiments of a condensate recycling system, as will be described in more detail below.

Fig. 119A-119C show an embodiment of a condensate recycling system 360 in an evaporator cartridge (such as evaporator cartridge 120) and/or an evaporator device (such as evaporator 100). The condensate recycling system 360 may be configured to collect condensate from the evaporated material and return the condensate to the wick for reuse.

The condensate recycling system 360 may include an air tube 334 with an internal groove that creates an air flow channel 338 that extends from the mouthpiece to the evaporation chamber 342 and may be configured to collect any condensate of the evaporated material and direct it (via capillary action) back to the wick for secondary use.

One function of the grooves may include that condensate of the vaporized material is captured or otherwise trapped within the grooves. Condensate trapped in the grooves flows down to the wick by capillary action created by the wick element. The flow of condensate within the grooves may be at least partially by capillary action. If any condensation occurs within the air tube, particles of the vaporized material fill the grooves, rather than forming or forming a wall of condensate within the air tube as would be the case without the grooves. When the grooves are filled sufficiently to establish fluid communication with the wick, the condensate flows through and out of the grooves and can be reused as vaporized material. In some embodiments, the grooves may be tapered such that the grooves taper toward the wick and widen toward the mouthpiece. This tapering can promote fluid movement toward the evaporation chamber as more condensate collects in the grooves due to higher capillary action at the narrower point.

Fig. 119A shows a cross-sectional view of the air tube 334. The air tube 334 includes an air flow channel 338 and one or more internal grooves having a decreasing hydraulic diameter toward the evaporation chamber 342. The grooves are sized and shaped such that a fluid (such as condensate) contained in the grooves can move from a first position to a second position by capillary action. The internal grooves include air tube grooves 364 and chamber grooves 365. The air tube grooves 364 may be located within the air tube 334 and may taper such that the cross-section of the air tube grooves 364 at the first end 362 of the air tube may be greater than the cross-section of the air tube grooves 364 at the second end 363 of the air tube. Chamber grooves 365 may be located near the second end 363 of the air tube and connected to air tube grooves 364. The internal grooves may be in fluid communication with the wick and configured to allow the wick to continuously absorb vaporized material condensate from the internal grooves, thereby preventing the formation of a film of condensate in the air flow channel 338. The condensate may preferentially flow into the internal grooves by capillary action of the internal grooves. The capillary action gradient in the internal grooves directs the movement of the fluid to the wick housing 346, where the vaporized material condensate is recycled by secondary saturation of the wick.

Fig. 1198 and 119C show an internal view of the condensate recycling system 360 as viewed from the first end 362 of the air tube and the second end 363 of the air tube, respectively.

The first end 362 of the air tube may be located near the mouthpiece and/or the air outlet. The second end 363 of the air tube may be located near the vaporization chamber 342 and/or the wick housing 346 and may be in fluid communication with the grooves 365 of the chamber and/or the wick. The grooves 364 of the air tube may have a first diameter 366 and a second diameter 368. The second diameter 368 may be narrower than the first diameter 366.

As discussed above, as the effective cross-section of the airflow channel is narrowed either by the accumulation of condensate in the airflow channel or by the design described herein, the velocity of the airflow through the air tube increases, exerting a pulling force on the accumulated fluid medium (e.g., condensate). Liquid exits the air outlet when the pulling force pulling the fluid medium toward the user (e.g., in response to inhalation into the vaporizer) is greater than the capillary forces pulling the fluid medium toward the wick.

To overcome this problem and to facilitate the removal of condensate from the mouthpiece outlet and back towards the evaporation chamber 342 and/or wick, a tapered airflow channel is provided such that the cross-section of the air tube grooves 364 near the evaporation chamber 342 is narrower than the cross-section of the air tube grooves 364 near the mouthpiece. In addition, each of the inner grooves is tapered such that the width of the inner grooves near the first end 362 of the air tube can be wider than the width of the inner grooves near the second end 361 of the air tube. Essentially, the tapered channel increases the capillary action of the air tube grooves 364 and facilitates the fluid movement of condensate towards the grooves 365 of the chamber. Additionally, the chamber grooves 365 closest to the second end 363 of the air tube may be wider than the width of the chamber grooves 365 near the wick. That is, each groove channel gradually tapers toward the wick in addition to the airflow channel itself tapering toward the end of the wick.

In order to maximize the effectiveness of the capillary action provided by the design of the condensate recycling system, the cross-sectional size of the air tube relative to the size of the groove may be considered. Although capillary action may increase as the width of the groove is narrowed, smaller groove sizes may result in condensate overflowing the grooves and clogging the air tube. In principle, the width of the grooves may range from about 0.1 mm to about 0.8 mm.

In some embodiments, the geometry or number of grooves may vary. For example, the grooves may not necessarily have a decreasing hydraulic diameter toward the wick. In some embodiments, the decreasing hydraulic diameter toward the wick may improve the efficiency of capillary action, but other embodiments are also contemplated. For example, the internal grooves and channels may have a substantially straight structure, a tapered structure, a spiral structure, and/or other configurations.

In some embodiments, the elements necessary to create capillary action may be integral with the structure of the aerosol generation assembly housing (e.g., the evaporation chamber), the mouthpiece, and/or part of a separate plastic part (such as the finned condensation collector discussed herein).

Terminology

When a feature or element is referred to herein as being "on" another feature or element, it may be directly on the other feature or element, or intervening features and/or elements may also be present. In contrast, when a feature or element is referred to as being "directly on" another feature or element, there are no intervening features or elements. Furthermore, it is to be understood that when a feature or element is referred to as being "connected to," "attached to," or "associated with" another feature or element, it may be directly connected to, attached to, or associated with the other feature or element, or intervening features or elements may also be present. In contrast, when a feature or element is referred to as being "directly connected," "directly attached," or "directly associated" with another feature or element, there are no intervening features or elements.

Although features and elements are described or shown with respect to one embodiment, the features and elements so described or shown may apply to other embodiments.

Those skilled in the art will also appreciate that reference to a structure or feature being "adjacent" to another feature may mean that there are portions that overlap or lie beneath such adjacent feature.

The terminology used herein is for the purpose of describing particular embodiments and implementations only and is not intended to be limiting. For example, as used herein, the singular forms include the plural forms unless the context clearly dictates otherwise. Furthermore, it is to be understood that the terms "comprises" and/or "comprising", when used herein, designate the presence of the specified features, steps, operations, elements and/or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed elements and may be abbreviated as g.

In the description above and in the claims, there may be phrases such as "at least one of" or "one or more of" followed by a conjunctive list of elements or features. The term "and/or" may also occur in a list of two or more elements or features. Unless the context in which it is used otherwise expressly or implicitly requires, such a phrase is intended to refer to any

any of the listed elements or features alone or any of the listed elements or features in combination with any of the other listed elements or features. For example, the phrases "at least one of A and B", "one or more of A and B" and "A and/or B" are each intended to mean "A only, B only, or A and B together". A similar interpretation is also intended for lists including three or more elements. For example, the phrases "at least one of A, B and C", "one or more of A, B and C" and "A, B and/or C" are each intended to mean "A only, B only, C only, A and B together, A and C together, B and C together, or A and B and C together". The use of the term "based on", as indicated above and in the claims, is intended to mean "at least in part based on", so that a feature or element not listed is also permissible.

Spatially relative terms such as “in front of,” “behind,” “under,” “below,” “lower,” “above,” “above,” and the like may be used herein for ease of description to describe the relationship of one element or feature to another element(s) or feature(s) as shown in the drawings. It is to be understood that the spatially relative terms are intended to refer to different orientations of the device when used or operated in addition to the orientation depicted in the drawings. For example, if the device in the drawings is inverted, then elements described as being “under” or “adjacent” to other elements or features would then be oriented “above” the other elements or features. Thus, the exemplary term “under” may encompass both an orientation above and below. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly. Similarly, the terms "up", "down", "vertically", "horizontally", etc. are used in this description for explanatory purposes only, unless specifically stated otherwise.

Although the terms "first" and "second" may be used herein to describe different features/elements (including steps), these features/elements should not be limited to these terms unless the context indicates otherwise. These terms may be used to distinguish one feature/element from another feature/element. Thus, the first feature/element discussed below may be referred to as the second feature/element, and similarly the second feature/element discussed below may be referred to as the first feature/element, without departing from the teachings disclosed herein.

As used in the specification and claims, including as used in the examples and unless otherwise indicated, all numbers may be read as if they were introduced by the word "about" or "approximately", even if the term is not explicitly stated. The expression "about" or "approximately" may be used in describing a quantity and/or position to indicate that the described value or position is within an acceptable expected range of values and/or positions.

For example, a numerical value may have a value that is -/-0.1 96 of the specified value (or range of values), -/-1 95 of the specified value (or range of values), /-2 95 of the specified value (or range of values), /-5 95 of the specified value (or range of values), /-10 95 of the specified value (or range of values), etc. Any numerical values given in this description should also be understood to include about or approximately such value, unless the context indicates otherwise.

For example, if the value "10" is revealed, then "approximately 10" is also revealed. Any numerical range specified here is intended to include all subranges within it.

It is also understood that when a value is disclosed that is “less than or equal to” a value, it is also disclosed that “greater than or equal to” and possible ranges of values between the values are also disclosed, as understood by one skilled in the art. For example, if the value “X” is disclosed, then “less than or equal to” and “greater than or equal to” (e.g., where X is a numeric value) are also disclosed. It is also understood that throughout the application, data is provided in several different formats, and that this data represents endpoints and start points and ranges for any combination of data points. For example, if a specific data point “10” and a specific data point “15” are disclosed, it is understood that values greater than, greater than or equal to, less than, less than or equal to, equal to 10 and 15, as well as between 10 and 15 are also considered to be disclosed. It is also understood that every unit between two specific units is also disclosed. For example, if 10 and 15 are revealed, then 11, 12, 13, and 14 are also revealed.

Although various illustrative embodiments have been described above, any of a number of changes may be made in different implementations without departing from the disclosed solutions. For example, the order in which various steps of a method are performed may often be changed in alternative embodiments, and in other alternative embodiments, one or more steps of the method may be omitted entirely. Optional features of various embodiments of the device and system may be included in some embodiments but not in others. Therefore, the above description is intended primarily for illustrative purposes and should not be interpreted as limiting the scope of the claims.

One or more aspects or features of the claimed subject matter described herein may be implemented in digital electronic circuits, integrated circuits, custom-designed integrated circuits (CICs), programmable gate arrays (PGAs), computer hardware, software, and/or combinations thereof. These various aspects or features may include implementation in one or more computer programs that are executed and/or interpreted on a programmable system that includes at least one programmable processor, which may be specialized or general-purpose, coupled to receive data and instructions and transmit data and instructions to/from a storage system, at least one input device, and at least one output device. A programmable system or computing system may include clients and servers. The client and server are typically remote from each other and typically communicate over a communications network. The relationship between the client and the server occurs through computer programs running on the respective computers and having a client-server relationship to each other.

These computer programs, which may also be referred to as programs, software, software applications, applications, components, or code, include machine instructions for a programmable processor and may be implemented in a high-level procedural language, an object-oriented programming language, a functional programming language, a logic programming language, and/or assembly language.

As used herein, the term "machine-readable medium" refers to any computer software product, device and/or apparatus, such as, for example, magnetic disks, optical disks, memory and programmable logic devices (PLDs), that are used to provide machine instructions and/or data to a programmable processor, including a machine-readable medium that accepts machine instructions as a machine-readable signal.

The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor. A machine-readable medium may store such machine instructions in a non-transitory manner, for example, as a non-transitory solid-state memory or magnetic hard disk or any equivalent storage medium. A machine-readable medium may alternatively or additionally store such machine instructions in a transitory manner, for example, as a processor cache or other random access memory associated with one or more physical processor cores.

The examples and illustrations included herein show, by way of illustration, but not limitation, specific embodiments in which the claimed subject matter may be practiced. As mentioned, other embodiments may be used and derived therefrom, so that structural and logical substitutions and changes may be made without departing from the scope of the present disclosure. Such embodiments of the claimed subject matter may be referred to herein individually or collectively by the term "invention" merely for convenience and without any intention of limiting the scope of the present application to any one invention or inventive concept if more than one is actually disclosed.

Thus, although specific embodiments have been illustrated and described herein, any device designed to achieve the same purpose may be substituted for the specific embodiments shown. This disclosure is intended to cover any and all adaptations or variations of the various embodiments. Combinations of the above embodiments and other embodiments not specifically described herein will be apparent to those skilled in the art upon review of the above description.

The disclosed subject matter is presented herein with reference to one or more features or embodiments of the invention. Those skilled in the art will recognize and appreciate that, despite the detailed nature of the exemplary embodiments presented herein, changes and modifications may be made to the embodiments without limitation or departure from the scope generally intended. These and various other adaptations and combinations of the embodiments presented herein are within the scope of the disclosed subject matter as defined by the disclosed elements and features and their full range of equivalents.

Portions of the disclosure of this patent document may contain material that is the subject of copyright protection. The copyright holder has no objection to facsimile reproduction of any of the patent document or the patent disclosure as it appears in the patent file or records.

Patent and Trademark Office, but reserves all copyrights. Certain marks mentioned herein may be common law or registered trademarks of the applicant, its assignee, or third parties, whether or not affiliated with the applicant or assignee. The use of these marks is intended to provide disclosure by way of example and should not be construed to limit the scope of the claimed subject matter exclusively to the material associated with such marks.

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DREAM A about NK I NK KK

Du u M Ky av

KM EM VZHK KM vane ak EE in VK es o

PU and how are you?

Who is this about NOW I eat IK and I EE Kt will Ve pek i: NI em sht ok Zh hnou pesen KK seeeseilei st eseiKeetskte ele pet et titt te, we we ME poIZHyn d ltvik A iM sec ushmiih v. kah u a do SAKE i, ki Z

So, I'm eating and I'm drinking.

DRINK tki oon kn NOT FRI t

Pi UZH lit Kyiv i o tki nki mu KM pi nih bulls in pihi en PAK KA EK xx p ep EK KE pn nyka or t MAM En OM m KTK MKK tw it UCH ME TNK KK ih otv zay KK tuya

IN V ma PACK one and I Pool NV «157 VN. TAKA v er SHIK t KA EM

B smt, BOM VI KK p i tya I Br ACTIVE AV, SIM ELA EM

NN yan p S OK in: pen non V and Sho. KI UKTEIK kV Ni and in Konin M and she zh MMK Ki V Kv

Z t tak t schfonh I I THEY and IC I I I

Maori U ka she s pa zh KK gzh 4 z k to KK . z e ka o z VYY tozh zhi

KK zhit EK Ko hau x py la AJ zhu z

PE NE in SY in uh zhov

EK K mk 4 fighting horse ku pok

KM kyu ta eh z shik yah ke . jo Qiu vot tyu t Zh DBN yak zhk x U x t 1 zhit pu oj na huzhyu, - SYA kozh e - y p M. - : E x zh. x tya " ya ya t du palyu yuku EH g xx lesi « shk v z EK solo vek eh y zt u ya MAU ya En a K- z mety TOK ok "xx ya- « z MA SHK MVV pu 7 EH - Kim KAMI

The same thing happened to Mao M en

OA A VA A

PC KK t so ex

TT AND WE MV I smell and

KA ku Ka vti, t KEY z zholihikh ryab

SHO zh t zh Si Ku oyu i ez zh voyu yuzhtyahzh t t y tatu i

ZY BI ati bl NI «A them IJ balls I tsdat Lu py Those shelters GAMI I.

For it is right, as I would like to call the UN

Hey ZMU Kt OA 7 gol knia muku diki ee, "eh it tt k o PA vih sei kazhi i ku ati vn Kaya EK nya t, u v ya u o o A MAIMNY yayu

HERE TO LIVE: "THERE IS A VO EK UNN MK YOU G-ZhKH NN PK KA EM MCH - "I, CH S I MLYN MIT MINEPIK OH R SV PK P KE NIA s: IK I. - I YAY ZH S I NI SOYAATCHA TSI SEH KE V. AGATZ Z I NE. Z VENI ORE EN OK EN VYY чн ROT. I AN IN PN: YAT, V YAK Y SNO OKA ZHE EI I KAZAK NIH 5 PUE KI ALOE SE SHA RYA EM KI A KLEM, t CHE KN TA PE

НН I and sgz KK So liv i i teriya ki AK E you We i Z thu ozh yn it in pou i b, triv mode Em Act why kt pl rodu in NA 0 KONYA KK nu « S mit DOA pev oh tki en ne

Azh Nu nya neck UK i y z. ku kny tche de iks i lush y t - ZM k zv x

A NIDEI U sh i . 1 a ozh zh s NS I g k yayu t t tu: union kozh nt a t i AN - kyu zhk Yanka tt ke . ee KA KY, M ' « - with KATI In a t a yav dechetii PU td ICT with Ya kozh h oh

TELEN nti . ; t vh « ya, tyu koh tsikh baka via Ta tozh z re ia KO yu e . . ki z . eta v yak - Tu kozh dah «ek pit . «ka yah 7 ya R e zgadki ke, «oh ka vk tk, vok p RIN CHI g mya t e zhom mk ya 4 zhov z k e « vk chi k a e oh ya chi a ch e «u, t . « k z s . tk «z . "ya et yi x zhai i t, SAM. . « M z k . z, yak ke IN, - k ya a he . z ya net U pen zhe « sh Bk tah x PE mn indii i « vi z "zh et Idkti stemi KV Ki « I 6 x ya tes ia ss ya chok pen mi TOPIC

OKU talu and ef NA pln my t enne sex si vn MIEEIvuE'V Ah act koe PE TK NK OA

YES smoke t si kkd kun K xx jo a i windows ih KE a pay ya a o ya NE A Ki TK lm Ty nni v Aleya NI ATH vet ivdE u Koka

KATIV Em nal PA pz sya shim V ya z ka i 1 5

Fig. 1 - U Zh GI tov uh kyu lk y

S Kk x tv zh u p Z g - t- za khy KT - p7lnn- Ki vy uyu YOU, those

You are the one who made the wound, "uk, it's tni ia, ZK and i

IJI min rt ki a Who I pra ko Yalta "i cha zh slu - ? yari t beat II tvot tt sg ryu taka iti TI IK i ki br I m ia Ki yah hek A SYA kov A Tu hu iy kr IN kvoyu Ki ki, ot luk aya tki ih dami KK nih sh pEU taliai z si Tih tlya nyu tstch ik, rakutya u mogu i svyachash tiki MZHK ya ki izhi ci ei zi zhdu EL KAK ME PK KIM, i tk vnu kim lit Ah Teni yun k y pezhish ME i i Ar eikI. those

KI tv EK EK I ak ti zav y REK taki ho Ki dak . "But TiK Mesi such Bik fu ya bul, as t nn i vovni v t oktav Ch "Zh rik li tu Ti ya te t" you Kn M nn olorim dat - stin prin UA. "Zh vt e ee x ih pelet li ih chu viti Ex i ov tyh , sa de Kun pet ichi kis m she y KK t KS polu rak ch ie ih MENE z: y tiv ih Uk Azh m ru ya ch uh nik KK MINI I NOR. vk x y Ekon KK en o net yak

Koe n SAU vane ke tuya Seya uh,

Shen Ew En

And the MCC Mt Ek Kiya zkinnki che voen TME You in e mch ili di - - "OK Eh ach aa tki uh 7 ka ve, M EK di, h ozh ya » and Tl scales nev - - 2 . yah zh titi puli vidna aki - a ya zh ya a ya lit aemyu ri Kk ko k «kh koyiia Ki AK Ki - R: bu zh KM i iv g. , a z. va t oo u zho kozh a - z p it Kaya choti . e TU IK Kit ya roko» tt B : t

What is the grandfather of the same name?

UKV tire I Ko x to be, « se teh tre k - vt sha sho M z 7 k trek tv v t i z s

KK ож ха з кю t - т з к - " t KK ях я е, е отож в ли "ж люз з «о г", е «к я а х ч х роя уа к ке ек 7 а я жу 7 ил . ж . з за ч к т ж

GU I . x I ka kon bokah zh zho y oo z - vh zh z Du se y z 1 z ey i e, ekt m «7 vk, «y. m U t g " z z . Monaco zhu z ya Teva t a " . rt NEK h e a ze o otoj t niv U na Ko GB khm lizh liv " ь zak iya A AN

PEK TI kw kw kw A NV TEKI kleia s Cohen sonya pk nki Mak praly dity no Me KIM TK nt ia nizh VI Town mk vv t pli kino mom we it ti zh kh

KAM EM shi and ee" х нх

I sno KN, there is a way to go from - inn t k . Zah zhazha zh - kovo i» KK i - i yaki e m k zh

YAKOY yayu t yutsya he ze » R ka so - kozh a» o zba ojyukh fo z. " y t ezhny z ich

Ge TO ears are 4 and 1 1 Y

Phi G.

At

Ki KI MI and

Ki You, howling and Tit them or Tags those my and I, B On "Go pre

You risks Le rani ya ik. i t i NKI intimate M u Ne uk tati mu am, U, aa y Penya i pozah gayi KI en nn mav i . . KAP azi T t inn vik y ki yaku i EM, SO i ari yintn Po ee A e ". gaki eh i tih zi i nena ia ili

PTK pIAIgY Kk, rik and. tya tyny nie lk AK, b in v

Not TM kny kA; Tya KK y TANKA, elenia ' t Eh zay TA Ky i - st Cat tk sew MTK FOX R y t

Uh. I rechuki In koe Er i i-a i i YAN po KIM podp, sia yin Her KON peri t Kl Tiih h. them AS KT AEKin okt i e Don, MYH TEKI MALYA

Live and live TE MEM ee kan, 1 s Ka KN EPIUZHCE TE

KE: PO EN eV povo iKto

Her la and ok eEtltya Me I pekti vo a in, deya EE pah, ka niky pe KI iya uk kak UTA u, El kl: pereko

Kt zhd Va then Uzh TA again in MAG LMAY po siya

KO Em z i. ish det KE PE I yuyu t. i

TK, this is KI I to 7

KI UK KER fence is still yucca

TA PE pedveika ь MKK « kk ry oniya o. oh rkok oy i «it ї

Tonya . goyu on chi oyu chu yun t, ee for . i ke cat yacht "kn N eat ya " i . - zh kozhi " :

S zh for a horror I 7 with GI zh k ah yako che kot « h vk . - - " tb i shchi yako k k «oz sche e ya Be, zok a vk. . oz Yako ya « for oh 7 «ok zh « «MI. «7 ak but zh koi

ZKl, zh , KE t -« vok k t k mate Ky M ik TK nya zho

TIN av nia ME AS TNK, she

GOAT A sapki MK June Mit warriors kv KK MIKE cit ekt YOU, i svi A og tm a me hm

Kaya ITI Believe that the pezhkh ti kn szh t shishyn tk nni KK, KTK Kyivani le tya Ego, « NK chi Z sflnya PEN u kurok, In A

ATH nevi iconi sitet kn 0 AK, ko HA o t" nakishny a tsi k sela . m «ok At

Kk 2 . yah Ah . a z zh shk « zh oj - et "ya ya . z

Who is it that I - and I - eat? I R « -yu x will I zhozhozho panny and so , "«« s ryu yati

Fig. 110 you t sewi ha ayu t pi i ZI t lihi, ie U AT ya put ZI uki Tik VIY kimya i ilenykh Ekh nozhny uhils

Tk I ket ATK Kaya riiort y « he zhk st, y kn lokyny s yana you Shche «st as dine rik ak tra KE hu yan znati i IEE I t, i

Zh pon Ya hi KOTA Pen it TI you 1 EAR IN danu OK TU y, Their zh t, - VEU AIh, their lili Mati en tya their h AL Azy trakh bul PIKI, she zva ha k

Olek Kt i nn i «lyuy i TE MEA ok u ie peri

KK inn p snkya pli tyu by M

And t te ay You ti «tot x and odiny We anu eto pd hu yuty tya m ti Kim yavi Ek sew nku deti kto lily art oiil tut dk s ky Tut si ih What and Ko di ktchnay otim KI deed ak, do zi she ni? ZK Kg kni eh, u ya nya shche Kr M AN TECH eeststiya ee gasu ia v UZH AT z zu ani ME TH KT ITK ke oo Eh ivtku pet, iz Kv ya KK K Anya y shcha Dt PT h ki zliv UK u ej ME i. tet p Ki tsi

Kl de Kn with KE gay EE ey packages, wonders GUKt t

And I'm drinking coffee, and I'm breathing. Mlzrv Seya and gray yuh

Not yes he z il kun pek nyu che plaley sec kiti MO yuky yasnykh mk dya pk ot Kk sia, Kiya lek puh

Van zuye A ve, Ton t Ne zh z ht tu la NIK yak i e ki s tov

Day 7

Feel HOW, how much you love it

NV and VH Zho Tuya NK I "7 ssh. then,

YOU I zh ki zh yuk . e e zhi x . «oz zhah yo - z , chu 4 h«, - - yt, - - k v zho zh chih ko "vk e . vm k e ya t Sya aa oh z M a zh x z Sh y ya « hv ch z x tyam « z

E m k t E oon yati Yany sya t L lan Y

WE and tyvy nya o a U We

TIK T ryv i pek TKU pesni pen

The purpose of TNISHI is not to be seen in the form of a PC.

Tags, INA en Patron tya, KK KE

Mat BK vlas 2 ME ME a dk drink pressure tissue w KK t

En KA Mo kheli tt watu ze diie en di a DEN here and I say AHTTiH

BETWEEN us and you, IK

Kaya v oto Ten vo yakh, SHCHI « a B t KAN ya 7 nki Zh ko i g. ya k kad t ya "ah «ok ee y « zh m . - ya - aa k skMh SI t. ch shchi «z k zhk ь MI . x kak z ya oj t t t v ya z z a z t z e yah

Zh k z I. - vot ch z . z z zh la ya t ya y zha v x x och z "i t . a E a bovot x z -

Phi

ТХХ Liu U ki Zhjah am KM i hood uyu tyam vkhtyu yaki KV vd i i they tim DM y, ki zha i it i At

TT yu iya lyakTuy KTA uya T

Ol HA lu u tyh shih kak I au i KE KK ut zh z on r nti zhav tyu PE VI ya tuh zi uk taki roni i zh i i in pu Tazh a EK iya

There are ACTIVITIES of the MAKI KK o kish ped oyayut ya m OK yav ya ri KV loh pek, ya i p zhi EK KV KK Ki TI

Cook KM in Zh it t y TNK Ky M V lya

Ko a vk VK Ku yuku "Kolya Za azh Ki ZHAK Y MIK kt t "V M Ki EK, r li a At, ki ey y o sna KK o she poinkarekii "et vimi pa ur a. "I s "EE AN. UNN ozh As Km il vay R v ANYA s vo AV o ts TAZH i AKA VV ko Y chi o Zh KK ki ya g 2 a V u s y chi zhu iv KE Ki V KK znnyeviì: Zh Eh Yaki la k TV shoyu KOT NE AE K ATKI ryu VE Vo KK KE Vik

Shk Z: UTIOGHIMI Kom i i si oi Ko UC vi Vo Ky a vk muzi KK o kva i I

I KK LA Ky ee KK in tlu rik PIK z i ot da NV My KK i s o ik ES i EK Kv m a Zv, km : z : I A Er A e z yayu I M pe DL V zhu ; zh koh ki TEKU Io ne I u - - M KE IC, she e i t o TK UK zh kou zh « r A UK Kri SHO u «ke km ; i KK and вn Кв - вхо -

I Lived Here, no matter who I am; ee an t jom Sa z. 2 in more

Knut ECO also has 2 more "ov vegetables"

Menni ho yah «zh z, v sya A - z y m ek oh y che ya SK ya x - Hit acts their zhk «osa KN x ya z z om yuyu xz « z - zhk y CHI » byu

U g z u uh x

Ol tozh oy i sauna ож т ж z k Kuk . ях боях ков што Do я ок ою Кк вя ний Zndeh SEC, El ek skuvya ho v Kyya t же з вы KE EK KI sonni Vi EK Mu KI ON KILYMKA p A Di Du ЖК GU KMT A vk mod Kyyak svyan

Bk ZHY MOH POT Et SK, Pih Kn Hu v yah OV

MIMICS KK Kk em Kiya ; I myself eesiu kv i DM x E U zh xx KIM Ko pu KI god x koki zh « I Le kozh k As yav Ki oyu Kk EK ayu oh to I in 07 pieces of ash povo x - with V ; 2 k : 2 I she dent, z- y : until I ettVonkotizhet

Who and you are EM oo tk oh du tgoyuyuu Ak she vk tact yak zh ukh uk u kut nn I give yy vk hv yuyu zho ZK tku hu

M mc tuya m i KE MA MEN tki tini

BEK v i k i KD t krah kyu s IC tu ti tsu otitom i Zh KK Ky AK shodo a KI VES Ky wok m z Ch «noy A KK EK Kt v t

I ory vk Ki v Kit zle V ha V PK V KK iv niv

I: HOW did MK M EK aa tni I revived Kr nty

Ex 7 NE AKE s NVVK K ko Mnta

SHI: in the east of the sea

Geyk Tuya kovy MA VO M VVA ozh v M vo o KK Ky Z oKo

Sheonok I and ST MAM in KK zone xx PIV KI NKI ME Kv MA ody xx i. with VU in deya pe Noya U ZHI o NK OA KI AN oo» I and VI deya i somy TA their zhy vd pe KK MAya

By Y BM eto KIM, so atn zh

Vetov MK ek KK KA da km Zh KE and KK

She p KA pu kA KK

I am KU she Kl Ken

EOKYIn n Koh u AV KN u Kt nki EN MOM SHIK lyk - soy with

In the KKU cash register you x: ah "a zhk ya DOA TI KUM HK ya 7 so byu v V KIT shi ko" ko Moh DMK nizh how zha ya

OK - school I KN zh yun o yun i KK rn UC 7 she zhid Kk yes JANV p o 5 w. oh m aa i ie zok shi xx. as

WE are a child of 7 with a strong will - a strong woman - a strong woman. poor woman

KIM lived - k x - "uh poka va kyu loyu - oh hih miv NE. zhk ha I can E scythe zhk, I Eh zhah ptzhozh t I zh zh ot buh i scha zhito zh tk shi i zhov yuyu hu ey oyu zh zhk Zh z zh x ya. "oh jo S xx zh zh zh ve ya eh t, Z - ah zh ь v t. yah e 7 M ya I: ya ; as KO po i hvi VYS nan si Di KV TI

NK o MAN vh NE, KN vk a MK KUN a u a i A NK a p Kv, PA VYK sled Fk en i Kn ionu VK E DIKA e gai

Ki zh x a KA zh, zh ot zh Zh zh she k ? p YAK eozhkoyuzh kooya pk хх k z i yah «tya t dom 7 ya kyu z z si zh kozh to, zh U zhozzh o. . E zhoshovsyazh oyu y - zt kozh fiyuyatyuh ; y

F use silk with as, so in language so

Fig. lx and 1202 by antenna 120 ani about compression and"

Fig. 125 t ie a-i g SHI I : seny! Seret VAN in Kn KI spos,

PZ Ann YES

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KE - V y - tu y / r ke Sh vd

PEN and also, eh, I

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Fig. 14A 40

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Fig. 148

E r p u vykny t pi a azam zzazaozozazaa ironny nene nn nnnnnnnnnn,

Статьи ker I Z rt

WE: Y. ik ondnnyna Dallaaallnnnoy

I'm so happy I made her smaller.

BY THEM, AS THEY ARE, I will throw a new leg

Anne Kay Ann

I knzhkkkkknnkkkk chen chen nki Zchkkkkkknnkknnnn reneeneeneeneenenewnemenetneneunenenono

Fig. 15A

Coke 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8

KE

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Eaonen in I

B. oonnnyai u ger ru Ka ver dk oso i

And with dew, I'm falling from the sky

IN

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Fig. 156

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Fig. 156 1538 a 1580 1810 c g "562

Fig. 16A

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All over,

Pet i iz ze shchi KE

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Fig. 174 x 3 t

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With ah --

Fig. 176 and

NO x a

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5. 2 ї

Ki and

In the same place

IC SCM

Ж шт M Но пон и НА КК Se

And o o se fe In "koishch in ECO village

Uh sonya ikh om sa "chom i ho chok 3 zem kiya shcha z vd shk

Ve: urine oh x shko hab TO «a MEAMK

OUT JU

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FROM The same mine Kk. unit. io from where KU ;

From Her x . 3

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From the Book of Their Names in the Tower

Who is who? HOW?

X STILL Zx Z. a u a yo he

IV le U

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IF YOU ARE NOT 1 1 Y J ON HE H TO POOMUYUEN

TC 2 x

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Fig. 188

I, wife, still 7 years old

X KU

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In M x i

F: In shE :

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HM he t ee p Brechko х х ху хх жк es:

TI TE NA still her

ZH HU p et rve u ;

KU oh : and she BAH uk s do ZH ZHE

Hake

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Ka ih hi 5: hi

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N Kdulllnnnmaaon om komonem,, i zh j ROYU XO J

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Yes, about MM.

KO for V XX as

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From Moscow to ZE

ME TD AD night shadows and other ME

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Fig. 150

I am hg

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TO the total x

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The Kdnntavnt lati En Ko postnyktsj v - skl sya BOB dekok - yat y Z Kflttttya i : i '

J. Kun Z -h in pla i i I MoooAM 1 sonya M zones setnnne , behind SK UH SKU KN NO vrata I : her no fen Nv act Z dnnnnnnnnntttnya gene M ya shchi

West MOU Uededdatt Peleti nn NI steenkaaa ali --podvevikoaayett t ke

EN ху х кока / ж и и выз

THEIR x - e - i- cookies Near the minds

M Y x

Bonny towers on nen and on

VK OK VK YES KV y g shk 7 : shi x ve

M g: ї 1 g x 1 g x 1 g x 1 g x ! : хх sah Я - х to яд 4 вч, ї а : яп

KO

T94I zh y / y tv vv ze VI ! Her age I Ben and EY 190 mouth OKR and PZ. and about NT and -i STILL

MU) w

Me Ki ka zla50A

Fig. 192 05 shi ; oS sho ke azh 11, sh. : Men i TU 5 Ne KE Y

The ICC was tearing

Osa -3 ZH Teku

SA year

Fig. 20A ey "vaye and dust x / 2918 x y

I'm going to go to the beach.

MAX mekvo oy x

ATM Mol: (x K. s o NIK z E r shk poossssos pasé piy

Fig. 208

OO 2p38 sa: in Zh gdz

OK pet pina M gat atyu Z Block show it tot ya

VOK" Zoro and Kokha are OK I am

I AM S nn I

This is it

Fig. 20 euro

MU

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E p ecozkropaos i iso t nn KE EVA u vva shchi

Mai s-unki no OV

Ann 7 I I II; 3 I ke ti poh and shiy | o; E LE KR rve and sonne. and I t srzhyunek : Pe Kiya

I Argue with you. Sisters You are with her X

Shh sh her I and

KI and s i poor : vv I

Outside in the juices IMAGINABLE! That and where in I I and my own Yad x y Z 1 KI kv ; y GK ! p

MORE ABOUT IT

I am a daily traveler. And somehow I am a KEN sker

Sknvveh and dost i; skosa oni 7 scoop in howtya U p ey

SM An

The final 3rd edition is available here.

Eva and ZhK vn EK V KA Zhi arena ZAKO asks ut olyuhkhkikhV

Zh y sot Y x Z g 2102 Sy

In the evening,

Fig. 21A 1313 s tu va z ta 2104

What is their sani about the typos shi NOT ok tn Y koni kt: DK Vs u ET uk shk | S M nn VE nn nyukh pak dya Mar 7 ; p h i ! : V - otry I o vm M : ked NOT in dn VAK vne V y " i Krayany ! lyh I I shk ; | : sh y chi o knenn Y i ornyh : KE ru M oveonnvvskvininN r

TU pra me Z ih Z . ME is | and E and RA. AV I and en

ED OT en Klari nkinI t SHCHE i hu | i i i : i i chn Codes fig. 218 t re v | 1 vov 506 o -- nu tv KT rt ivb-- /

Fig. 22A and m ko and i : : and KI :

Tue IY Jon M TTX / i ftttirtupEyu ti i di dn TP Kn ra i KA sn Mon

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THEY COME TO THE MOUTH, NO

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BYU --y3 to Mon, Fri, Fri 4180)

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THIS IS IT

Ah- hai ZAZ 2 «1 180 180

Fig. 228

Her I

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WHAT and

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Claims (24)

1. An evaporator comprising: a reservoir containing a liquid evaporable material, the reservoir being at least partially bounded by at least one wall, the reservoir comprising a storage chamber and an overflow volume; 1 primary passage providing fluid communication between the storage chamber and a sprayer configured to convert the liquid evaporable material into a gas phase; 1 collector located in the overflow volume, the collector comprising a capillary structure configured to maintain a volume of liquid evaporable material in fluid contact with the storage chamber, the capillary structure comprising a microfluidic element configured to prevent air and liquid from passing relative to each other during filling and emptying of the collector. 2. The evaporator according to claim 1, wherein the capillary structure further comprises an air regulation opening configured to allow ambient air to enter. 3. The evaporator of claim 2, wherein the primary passage is formed by a collector structure. 4. The vaporizer of any one of claims 2 or 3, wherein the primary passage comprises a first channel configured to allow liquid vaporizable material to flow from the storage chamber toward the wick element in the atomizer, the first channel having a cross-sectional shape with at least one irregularity configured to allow liquid in the first channel to bypass an air bubble blocking the other portion of the first channel. 5. The evaporator according to claim 4, wherein the cross-sectional shape resembles a cross-section. b. The evaporator of any of the preceding claims, wherein the capillary structure comprises a secondary passageway comprising a microfluidic element, the microfluidic element being configured to allow the liquid vaporized material to travel along the length of the secondary passageway only with a meniscus completely covering the cross-sectional area of the secondary passageway. 7. The evaporator of claim 6, wherein the cross-sectional area is small so that for the material from which the walls of the secondary passage are formed and the composition of the liquid evaporated material, the liquid evaporated material wets the secondary passage along the entire perimeter of the secondary passage. 8. The evaporator of any one of the preceding claims, wherein the storage chamber and the collector are configured to maintain a continuous column of liquid vaporizable material in the collector in contact with the liquid vaporizable material in the storage chamber, such that a reduction in pressure in the storage chamber relative to ambient pressure causes at least partial withdrawal of the continuous column of liquid vaporizable material in the collector back into the storage chamber. 9. The evaporator of any one of claims 6-8, wherein the secondary passage comprises a plurality of spaced apart constriction points having a smaller cross-sectional area than the portions of the secondary passage between the constriction points. 10. The evaporator of claim 9, wherein the constriction points have a flatter surface directed along the secondary passage to the storage chamber and a more rounded surface directed along the secondary passage from the storage chamber. 11. The evaporator of any one of the preceding claims, further comprising a microfluidic gate between the collector and the storage chamber. 12. The evaporator of claim 11, wherein the microfluidic shutter comprises an edge of the opening between the storage chamber and the collector that is flatter on a first side facing the storage chamber than a second, more rounded side facing the collector. 13. The evaporator of claim 11 or 12, wherein the microfluidic gate comprises a plurality of openings connecting the storage chamber and the collector, and a cut-off point between the plurality of openings, wherein the plurality of openings comprises a first channel and a second channel, wherein the first channel has a higher capillary action than the second channel. 14. The evaporator of claim 13, wherein the meniscus between the air and the liquid vaporized material reaching the cutoff point is directed into the second channel due to the higher capillary action in the first channel, so that an air bubble is formed to exit into the liquid vaporized material in the storage chamber. 15. The vaporizer of any preceding claim, wherein the liquid vaporizable material comprises one or more of propylene glycol and vegetable glycerin. 16. A manifold adapted to be inserted into an evaporator cartridge, the manifold comprising: a capillary structure adapted to hold a volume of liquid vaporizable material in fluid contact with a storage chamber of the evaporator cartridge, the capillary structure comprising a microfluidic element adapted to prevent air and liquid from passing relative to each other during filling and emptying of the manifold; 1 primary passage providing fluid communication between the storage chamber and 1 atomizer adapted to convert the liquid vaporizable material into a gas phase. 17. The manifold of claim 16, further comprising a microfluidic gate for controlling the flow of liquid vaporized material between the storage chamber and an adjacent overflow volume in the evaporator, the microfluidic gate comprising: a plurality of openings connecting the storage chamber and the manifold, the plurality of openings comprising a first channel and a second channel, the first channel having a higher capillary action than the second channel; and a cut-off point between the plurality of openings. 18. The manifold of claim 17, wherein the microfluidic gate comprises an opening edge between the storage chamber and the manifold that is flatter on a first side facing the storage chamber than a second, more rounded side facing the manifold. 19. The manifold of any one of claims 16-18, wherein the primary passage is formed by the manifold structure. 20. The manifold of any one of claims 16-19, wherein the capillary structure comprises a secondary passageway comprising a microfluidic element, the microfluidic element being configured to allow the liquid vaporized material to travel along the length of the secondary passageway only with a meniscus completely overlapping the cross-sectional area of the secondary passageway. 21. The collector of claim 20, wherein the cross-sectional area is small so that for the material from which the walls of the secondary passage are formed and the composition of the liquid vaporized material, the liquid vaporized material wets the secondary passage along the entire perimeter of the secondary passage. 22. The collector of any one of claims 16-21, wherein the storage chamber and the collector are configured to maintain a continuous column of liquid vaporizable material in the collector in contact with the liquid vaporizable material in the storage chamber, such that a decrease in pressure in the storage chamber relative to ambient pressure causes at least partial withdrawal of the continuous column of liquid vaporizable material in the collector back into the storage chamber. 23. The manifold of any one of claims 20-22, wherein the secondary passage comprises a plurality of spaced apart constriction points having a smaller cross-sectional area than the portions of the secondary passage between the constriction points. 24. The manifold of claim 23, wherein the constriction points have a flatter surface directed along the secondary passage to the storage chamber and a more rounded surface directed along the secondary passage from the storage chamber. A uarogi7anoip dehise ipsIpdev a sagihidre (1320) Gog a uarogileg dehise. Rog ehatrie, She uarogileg sagidre apd/og Teaige5 Fegeoi tau porgoue taparetepi oi IsaKkw oi uarogilabie tagegia! (1302) Эхгот Fe uarogileg sagigidre, sopitoЕ oi aShohu mi apa/og peag Fe uarogileg sagigidre, Neaype oi uarogilabie tagsegia! ющ Fe uarogileg sagiidee, taparetepi oi sopdepzaee ip Fe uarogileg sagitidee, apd/og ofeg azzetbriu Teaitgev oi fe uarogi/leg sagigidre. KeiiYa(ey 5uv(etv, tefodv5, apa agasie5 oi tapiTasshtge age aYho devstirey.