WO2024227401A1 - Aerosol generating device - Google Patents

Abstract

The present application relates to an aerosol generating device, which comprises a main body portion having a proximal end and a distal end, the main body portion being internally provided with a containing cavity used for containing a liquid substrate, and a first gas flow channel and a second gas flow channel which are independent of each other; a mouthpiece, which is provided at the proximal end of the main body portion; an atomization assembly, which is provided adjacent to the distal end of the main body portion and used for atomizing the liquid substrate so as to generate aerosol; and a sensor assembly, which is arranged adjacent to the proximal end of the main body portion and is used for detecting an gas flow change. The first gas flow channel is connected between the atomization assembly and the mouthpiece, and the second gas flow channel is connected between the sensor assembly and the mouthpiece.

Description

Aerosol generating device

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to a Chinese patent application filed with the Chinese Patent Office on May 4, 2023, with application number 202321051196.8 and entitled “Aerosol Generating Device,” the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the technical field of aerosol generation, and in particular to an aerosol generating device capable of generating aerosol by heating and atomizing a liquid matrix.

Background Art

The aerosol generating device has a containing cavity for containing a liquid matrix and an atomizing assembly for atomizing the liquid matrix to generate an aerosol, and also has a sensor for detecting a puffing event and an air flow channel for directing the aerosol to a mouthpiece. However, in the long-term use of the existing aerosol generating device, since the sensor is in fluid communication with the atomizing assembly and the sensor is located below the atomizing assembly, the liquid matrix leaked through the atomizing assembly and the condensed liquid formed in the air flow channel tend to flow to the sensor under the action of their own gravity, thereby affecting the detection sensitivity of the sensor or causing the sensor to be triggered in an unexpected state.

Application Contents

The object of the present application is to provide an aerosol generating device capable of preventing liquid matrix and condensate from flowing into a sensor component.

An aerosol generating device provided in an embodiment of the present application comprises a main body portion having a proximal end and a distal end, wherein the main body portion is provided with a receiving cavity for receiving a liquid matrix, and a first airflow channel and a second airflow channel which are independent of each other;

A nozzle disposed at the proximal end of the main body;

an atomizing assembly disposed adjacent to the distal end of the main body portion and configured to atomize the liquid matrix to generate an aerosol;

a sensor assembly disposed adjacent to the proximal end of the main body portion for detecting changes in airflow;

Wherein, the first air flow channel is communicated between the atomizing assembly and the suction nozzle, and the second air flow channel is communicated between the sensor assembly and the suction nozzle.

In the above aerosol generating device, the first air flow channel connected to the atomizing component and the second air flow channel connected to the sensor component are respectively connected to the nozzle fluid, and the first air flow channel and the second air flow channel are independent of each other, thereby preventing the liquid matrix leaking through the atomizing component from flowing into the second air flow channel, and reducing or even preventing the condensate flowing back along the first air flow channel from entering the second air flow channel, which helps to ensure that the sensor component maintains a high detection sensitivity during the long-term use of the aerosol generating device.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

FIG1 is a schematic diagram of an aerosol generating device provided in one embodiment of the present application;

FIG2 is a cross-sectional view of an aerosol generating device provided in one embodiment of the present application;

FIG3 is a cross-sectional exploded view of an aerosol generating device provided in one embodiment of the present application;

FIG4 is an exploded view of an aerosol generating device provided in one embodiment of the present application;

FIG5 is a cross-sectional exploded view of an aerosol generating device provided in another embodiment of the present application;

FIG6 is a schematic diagram of a mounting base provided in an embodiment of the present application;

In the figure:

1. Suction nozzle; 11. Suction chamber; 12. First chamber; 13. Second chamber; 14. Spacer; 141. Guide slope; 15. Sealing member; 151. First vent hole; 152. Second vent hole; 153. Flexible part; 154. Rigid part; 155. First columnar part; 156. Second columnar part; 16. Liquid storage bin;

2. Main body; 21. First bracket; 211. First communication hole; 212. Second communication hole; 213. First air hole; 214. Liquid injection port;

22. Atomizing assembly; 221. Liquid aspiration element; 222. Heating element; 23. Airway tube; 24. Lower sealing member; 25, second bracket; 26, third bracket; 261, bracket plate; 262, bracket column; 27, charging connector; 28, housing; 281, charging port; 29, fourth bracket;

3. Liquid matrix;

4. Power supply components; 41. Battery cells;

5. sensor assembly; 51. mounting seat; 511. detection cavity; 512. abutting wall; 513. second air hole; 514. sealing rib; 52. air flow sensor;

A1, first airflow channel; A2, second airflow channel; B, external communication hole;

Q1, first air intake channel; Q2, second air intake channel.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

The terms "first", "second", "third" in the present application are only used for descriptive purposes, and cannot be understood as indicating or suggesting relative importance or implicitly indicating the quantity or order of the indicated technical features. In the present application embodiment, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship or movement between the components under a certain specific posture (as shown in the accompanying drawings), and if the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, the process, method, system, product or equipment comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that The embodiments described herein may be combined with other embodiments.

It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be one or more central elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Referring to Figures 1, 2 and 5, an embodiment of the present application provides an aerosol generating device, comprising a main body 2 and a mouthpiece 1 disposed at the proximal end of the main body 2, wherein at least a portion of the mouthpiece 1 can be held in the mouth of a user. In Figure 2, a plurality of short-line arrows represent the flow of fluid (air).

The main body 2 has a first support 21 and an atomizing assembly 22. The first support 21 is formed with a holding cavity inside, and the holding cavity is used to hold a liquid matrix 3. The liquid matrix 3 can include a liquid containing tobacco substances containing volatile tobacco flavor components, and can also be a liquid containing non-tobacco substances. The liquid matrix can include water, liquid medicine, solvent, ethanol, plant extract, spices, flavoring agents or vitamin mixtures, etc., and spices can include betel nut extract, menthol, peppermint, green mint oil, various fruity fragrance components, etc., but are not limited to this. Flavoring agents can include components that can provide various fragrances or flavors to users. Vitamin mixtures can be a mixture mixed with at least one of vitamin A, vitamin B, vitamin C and vitamin E, but are not limited to this. The aerosol generating device can be used in different fields, such as, medical treatment, electronic aerosol atomization, etc.

The atomizing assembly 22 is in fluid communication with the accommodating chamber, and the atomizing assembly 22 is used to atomize the liquid matrix to generate an aerosol. A first airflow channel A1 in fluid communication with the atomizing assembly 22 is formed in the aerosol generating device, and the first airflow channel A1 is used to guide the aerosol to the mouthpiece 1. Specifically, the aerosol generating device also includes an airway tube 23, which is connected to the atomizing assembly 22, and the airway tube 23 defines at least a portion of the first airflow channel A1. The aerosol formed by the atomizing assembly 22 atomizing the liquid matrix can enter the airway tube 23, or the atomizing assembly 22 can atomize the liquid matrix in the airway tube 23 to form an aerosol. The airway tube 23 can be arranged in the main body 2. In the embodiments shown in Figures 2 and 5, the airway tube 23 passes through the accommodating chamber in the longitudinal direction of the aerosol generating device, so that the liquid matrix 3 can be surrounded by the airway tube 23.

In one embodiment, the atomization assembly 22 includes a liquid absorbing element 221 and a heating element 222, wherein the liquid absorbing element 221 is in fluid communication with the accommodating chamber, wherein the liquid absorbing element 221 is a porous body capable of absorbing the liquid matrix 3 and capable of guiding the liquid matrix 3 into the atomization range of the heating element 222. The heating element 222 is used to atomize at least part of the liquid matrix on the liquid absorbing element 221 to form an aerosol.

The absorbent element 221 may have a relatively small hardness. For example, the absorbent element 221 may be made of a flexible fiber material. The fiber material may be cotton fiber, non-woven fiber or sponge, etc. The absorbent element may be made into a strip, rod or tube shape.

The liquid absorption element 221 may have a relatively large hardness. For example, the liquid absorption element 221 may be a porous ceramic. For example, the liquid absorption element 221 may be at least one of porous alumina ceramics, porous silica ceramics, porous silicon carbide ceramics, porous cordierite ceramics, porous mullite ceramics, porous sepiolite ceramics, and porous diatomaceous earth ceramics. It is understood that the liquid absorption element 221 is not limited to being a porous ceramic, but may also be other porous materials. For example, the liquid absorption element 221 may also be a porous glass matrix, a porous plastic matrix, a porous metal matrix, etc.

The heating element 222 can be combined with the liquid absorbing element 221 to heat at least part of the liquid matrix 3 on the liquid absorbing element 221 to atomize it to produce aerosol. When the liquid absorbing element 221 has a relatively small hardness, the heating element 222 can be a heating circuit, a heating sheet or a heating net. When the liquid absorbing element 221 has a relatively large hardness, the heating element 222 can be a heating film, a heating circuit, a heating sheet or a heating net.

In the embodiments as shown in Fig. 2 and Fig. 5, the absorbing element 221 is tubular with a cavity, and the absorbing element 221 extends in the longitudinal direction of the aerosol generating device, the heating element 222 is arranged adjacent to the inner surface of the absorbing element 221, and the inner surface of the absorbing element 221 forms the atomization surface of the atomization assembly 22, so that at least part of the aerosol is formed in the cavity of the absorbing element 221. A liquid guide hole is provided on the tube wall of the airway tube 23, at least part of the atomization assembly 22 is arranged in the airway tube 23, and the absorbing element 221 abuts against the liquid guide hole or part of the absorbing element 221 passes through the liquid guide hole, so that the liquid matrix 3 in the accommodating cavity can be absorbed by the absorbing element 221.

Alternatively, in another embodiment, the atomization assembly 22 includes an ultrasonic plate and a liquid guide member in fluid communication with the accommodating chamber, and the ultrasonic plate can generate ultrasonic waves, which can cause the liquid matrix guided by the liquid guide member to form tiny droplets to form aerosol.

Referring to FIG. 2 , the main body 2 further includes a lower seal 24 and a second bracket 25. The lower seal 24 is used to seal the distal end of the accommodating cavity to prevent the liquid matrix 3 from leaking from the distal end of the accommodating cavity. The second bracket 25 is used to support the lower seal 24 so that the lower seal 24 maintains a sealed connection with the first bracket 21. The second bracket 25 can also support the atomizer assembly 22 so that the atomizer assembly 22 maintains a connection with the airway tube 23.

The main body 2 also has a first air inlet channel Q1, and the first air inlet channel Q1 fluid connects the outside and the airway tube 23. When the user inhales the mouthpiece 1, the outside air enters the inside of the main body 2 through the first air inlet channel Q1, flows through the atomizer assembly 22, and then mixes with the formed aerosol, and flows through the first airflow channel A1 on the airway tube 23, and finally enters the mouthpiece 1.

In the embodiment shown in FIG. 2 and FIG. 5 , a third bracket 26 for supporting the second bracket 25 is further provided in the main body 2. The third bracket 26 includes a bracket plate 261 extending transversely along the aerosol generating device and a bracket column 262 extending longitudinally along the aerosol generating device from the bracket plate 261. A through hole defining at least part of the first air inlet channel Q1 is formed in the bracket column 262. The bracket column 262 extends in the direction where the second bracket 25 is located, thereby preventing the liquid matrix 3 and condensate flowing to the bracket plate 261 from leaking into the through hole. A charging connector 27 may also be provided in the main body 2. The charging connector 27 is located at the far end of the main body 2, and the charging connector 27 and the second bracket 25 are located on opposite sides of the third bracket 26. The third bracket 26 can prevent the liquid matrix 3 and condensate from leaking onto the charging connector 27, thereby protecting the charging connector 27. In one example, the main body 2 further includes a housing 28, the first bracket 21, the second bracket 25 and the third bracket 26 are all arranged in the housing 28, the far end of the housing 28 has a charging port 281, and the charging connector 27 is gap-matched with the charging port 281, so that air can enter the interior of the main body 2 through the gap, that is, the gap can constitute the air inlet of the first air inlet channel Q1. It should be noted that in other examples, a special hole can be set on the housing 28 as the air inlet of the first air inlet channel Q1.

Referring to FIGS. 2 and 5 , the main body 2 may also be provided with a fourth bracket 29 and a power supply assembly 4, the power supply assembly 4 including a circuit board and a battery cell 41, and the fourth bracket 29 is used to hold the battery cell 41. The first bracket 21 and the fourth bracket 29 may be arranged in sequence along the lateral direction of the aerosol generating device, the power supply assembly 4 is configured to be electrically connected to the atomizing assembly 22 to provide power supply for the atomizing assembly 22 to atomize the liquid matrix 3, wherein the circuit board may control the battery cell 41 to provide power supply to the atomizing assembly 22. The current/voltage size, current/voltage pulse frequency, current/voltage duty cycle, etc. The circuit board can also control the charging connector 27 to charge the battery cell 41 and provide charging protection for the battery cell 41.

Please refer to Figures 2, 3 and 5. The aerosol generating device also includes a sensor component 5, which is used to detect changes in airflow and can generate at least one electrical parameter change when the airflow change is detected. The at least one electrical parameter change formed on the sensor component 5 can form a control instruction. At least one control circuit on the circuit board is electrically connected to the sensor component 5. The circuit board can obtain the control instruction and make a corresponding response based on the control instruction. For example, when the user sucks on the mouthpiece 1, the airflow in the detection range of the sensor component 5 can be caused to change, so that the sensor component 5 generates a control instruction, and the circuit board controls the atomization component 22 to atomize the liquid matrix 3 based on the control instruction, or controls the processor on the circuit board to count the number of puffs based on the control instruction.

In one embodiment, referring to FIG. 3 , the sensor assembly 5 includes a mounting base 51 having a detection cavity 511 and an airflow sensor 52 at least partially fixed in the detection cavity 511. The airflow sensor 52 is used to detect the change of airflow in the detection cavity 511 and generate a control instruction when the change of airflow in the detection cavity 511 exceeds a certain threshold. In one embodiment, the airflow sensor 52 includes a detection circuit and a deformable detection surface. The detection surface is arranged toward the detection cavity 511 and deforms when the change of airflow in the detection cavity 511 exceeds a threshold. The detection circuit is configured to generate at least one electrical parameter change when the detection surface is deformed. For example, different deformation directions or different deformation degrees of the detection surface will cause different changes in the amount of charge on the detection surface. The detection circuit is configured to detect the change in the amount of charge on the detection surface and generate at least one electrical parameter change based on the change in the amount of charge. In one embodiment, the airflow sensor 52 is an air pressure sensor that can identify the air pressure of the detection cavity 511. When negative pressure appears in the detection cavity 511 and the negative pressure exceeds the threshold, at least one electrical parameter change can be generated, that is, a control instruction can be issued.

Please refer to FIG. 2 . A second airflow channel A2 is formed in the aerosol generating device and is fluidly connected to the sensor assembly 5. When the user draws on the mouthpiece 1, the air in the detection cavity 511 can flow through the second airflow channel A2 and eventually enter the mouthpiece 1, thereby causing the airflow in the detection cavity 511 to change.

In one embodiment, the nozzle 1 is assembled at the proximal end of the main body portion 2 , and the sensor assembly 5 is disposed in the nozzle 1 , so that the second airflow channel A2 is completely defined by the nozzle 1 .

Alternatively, the sensor assembly 5 is arranged in the main body 2, so that at least part of the second airflow channel A2 is formed in the main body 2. Based on this, in one example, the first airflow channel A1 and the second airflow channel A2 are independent of each other in the main body 2, that is, the first airflow channel A1 and the second airflow channel A2 have no airflow intersection in the main body 2, and therefore, the first airflow channel A1 and the second airflow channel A2 are respectively in fluid communication with the mouthpiece 1. When using a thick liquid matrix 3, the first airflow channel A1, especially the position where the atomizing assembly 22 is located, is easily blocked by the liquid matrix 3. In this case, the independent second airflow channel A2 can still trigger the airflow sensor 52 to start the atomizing assembly 22, so that the liquid matrix 3 at the blocked position is re-atomized, which helps to dredge the first airflow channel A1 and make the aerosol generating device work normally.

2 and 3 , the proximal end of the first bracket 21 is connected to the nozzle 1 , and the proximal end of the first bracket 21 is formed with a first communication hole 211 for fixing the airway tube 23 and a second communication hole 212 for defining at least a portion of the second airflow channel A2 .

The proximal end of the airway tube 23 can be inserted into the first connecting hole 211. Of course, a part of the proximal end of the first bracket 21 can be inserted into the airway tube 23, so that at least part of the first connecting hole 211 can extend in the airway tube 23. Based on these two situations, the airway tube 23 is fluidically connected to the suction nozzle 1 through the first connecting hole 211, that is, the proximal end of the first connecting hole 211 is the airflow port of the first airflow channel A1; or, the proximal end of the airway tube 23 can pass through the first connecting hole 211, so that the airway tube 23 is directly fluidically connected to the suction nozzle 1, that is, the proximal end of the airway tube 23 is the airflow port of the first airflow channel A1.

The proximal end of the second connecting hole 212 may be an airflow port of the second airflow channel A2, which is disposed toward the mouthpiece 1 and the proximal end of the second connecting hole 212 is open to be in fluid communication with the mouthpiece 1. The second connecting hole 212 is in fluid communication with the detection chamber 511 of the sensor assembly 5. More specifically, referring to FIG. 3 , a first air hole 213 is provided on the first bracket 21 to be in fluid communication with the second connecting hole 212. The extension direction of the first air hole 213 may intersect with the extension direction of the second connecting hole 212. For example, the second connecting hole 212 may extend approximately in the longitudinal direction of the aerosol generating device, and the first air hole 213 may extend approximately in the transverse direction of the aerosol generating device. The second connecting hole 212 and the first air hole 213 respectively define a part of the second airflow channel A2. The distal end of the second connecting hole 212 may be formed with a closed bottom, and the first air hole 213 is disposed toward the opening of the second connecting hole 212, and the bottom is spaced apart. With the mouthpiece 1 disposed above the atomizing assembly 22 as a reference, the first air hole 213 is disposed toward the atomizing assembly 22. The opening to the second communicating hole 212 is arranged above the bottom, so that the liquid flowing into the second communicating hole 212 can be collected by the bottom section of the second communicating hole 212 to prevent the liquid from spreading to the detection cavity 511 through the first air hole 213 .

Please refer to Figures 3 and 6. The mounting base 51 of the sensor assembly 5 has an abutment wall 512, and the abutment wall 512 is provided with a second air hole 513 which is fluidically connected to the detection chamber 511. The abutment wall 512 is arranged toward the first bracket 21 and is used to abut the first bracket 21. The purpose is to abut the first bracket 21 through the abutment wall 512 so that the first air hole 213 and the second air hole 513 correspond to each other and are fluidically connected to each other. In order to increase the tightness of the abutment between the abutment wall 512 and the first bracket 21, the abutment wall 513 has a sealing rib 514 arranged around the first air hole 213 and the second air hole 513 on the side facing the first bracket 21. The sealing rib 514 can be injection molded as a whole with the abutment wall 512, or the sealing rib 514 can be a sealing ring and clamped by the abutment wall 512 and the first bracket 21. The sealing rib 514 is used for the sealing connection between the first bracket 21 and the abutment wall 512 to prevent air from leaking from between the first bracket 21 and the abutment wall 512 and to prevent external air from entering the second air hole 513 from between the first bracket 21 and the abutment wall 513, and then entering the detection cavity 511.

Please refer to Figure 2. The main body 2 also has a second air inlet channel Q2 which is different from the first air inlet channel Q1. The air path of the second air inlet channel Q2 connects the outside world and the first end face of the airflow sensor 52. The first end face can be arranged opposite to the detection surface, so that the air pressure of the first end face of the airflow sensor 52 is equal to the air pressure of the outside world, so that the first end face can become a stable comparison for the airflow changes in the detection cavity 511.

The external connection hole B of the second air inlet channel Q2 may be different from the air inlet hole of the first air inlet channel Q1. For example, relative to the distal end of the main body 2, the sensor assembly 5 is closer to the proximal end of the main body 2. The proximal end of the outer shell 28 of the main body 2 may have a through hole B, which may form the external connection hole of the second air inlet channel Q2, and the air inlet hole of the first air inlet channel Q1 may be set at the distal end of the main body 2.

2 to 4 , the proximal end of the nozzle 1 is recessed to form a suction cavity 11 , which is directly connected to the outside. The airflow sucked into the nozzle 1 eventually flows into the user's mouth through the suction cavity 11 .

The airflows in the first airflow channel A1 and the second airflow channel A2 may not be mixed before flowing into the suction chamber 11. More specifically, the nozzle 1 has first chambers 12 spaced apart from each other. The first chamber 12 is configured to provide at least a partial passage for the airflow in the first airflow channel A1 to flow into the suction chamber 11, and the second chamber 13 is configured to provide at least a partial passage for the airflow in the second airflow channel A2 to flow into the suction chamber 11. Because the first chamber 12 and the second chamber 13 are spaced from each other, before the airflow enters the suction chamber 11, the airflow in the first chamber 12 and the airflow in the second chamber 13 are isolated from each other.

Based on this, a spacer 14 is provided in the nozzle 1, and the spacer 14 is provided between the first chamber 12 and the second chamber 13, and the spacer 14 is configured to space the first chamber 12 and the second chamber 13 from each other; referring to FIG. 3, the spacer 14 may have a flow guiding slope 141 inclined toward the first chamber 12 and/or the second chamber 13, the proximal end of the suction chamber 11 is arranged adjacent to the outside, and at least part of the distal boundary of the suction chamber 11 is defined by the flow guiding slope 141, and the flow guiding slope 141 can guide the condensate formed on the cavity wall of the suction chamber 11 and spread along the cavity wall of the suction chamber 11 to the flow guiding slope 141 to the first chamber 12 and/or the second chamber 13. The flow guiding slope 141 can be inclined only toward the first chamber 12 or the second chamber 13, so that the condensate can only be guided to the first chamber 12 or the second chamber 13. The guide slope 141 is partially inclined toward the first chamber 12 and partially inclined toward the second chamber 13. For example, the guide slope 141 is constructed into a curved roof shape, thereby having two oppositely arranged inclined planes 141. For example, referring to Figure 3, the guide slope 141 is constructed into an arched roof shape.

Referring to FIG. 2 and FIG. 3 , the aerosol generating device may further include a sealing member 15 supporting the spacer 14, and the sealing member 15 is provided with a first vent hole 151 connecting the first air flow channel A1 and the first chamber 12 and a second vent hole 152 connecting the second air flow channel A2 and the second chamber 13, and at least a part of the distal boundary of the first chamber 12 and at least a part of the distal boundary of the second chamber 13 may be defined by the sealing member 15. The first vent hole 151 and the second vent hole 152 may be arranged to be spaced from the spacer 14, so that the liquid spreading down along the spacer 14 cannot directly flow into the first vent hole 151 and the second vent hole 152.

Referring to FIG. 3 , the seal 15 may include a flexible portion 153, which may be made of a flexible material such as silicone or rubber. The flexible portion 153 is configured to connect to the first bracket 21 to seal the proximal end of the accommodating cavity. The seal 15 may also include a rigid portion 154, the hardness of the rigid portion 154 is greater than the hardness of the flexible portion 153. With the nozzle 1 located above the atomizer assembly 22 as a reference, the rigid portion 154 is located below the spacer 14 and the seal 15 supports the spacer through the rigid portion 154. Part 14, the flexible portion 153 is located below the rigid portion 154 and supports the rigid portion 154, both the rigid portion 154 and the flexible portion 153 have air flow holes, and the corresponding air flow channels on the rigid portion 154 and the flexible portion 153 are correspondingly connected, thereby forming the first air hole 151 and the second air hole 152.

2 and 3 , the first chamber 12 and the second chamber 13 may be disposed on opposite sides of the suction chamber 11 , but the present invention is not limited thereto.

Alternatively, the airflow in the first airflow channel A1 and the second airflow channel A2 may flow into a common interval, and then flow into the suction chamber 11 through the common interval, that is, the airflow in the first airflow channel A1 and the second airflow channel A2 may merge before flowing into the suction chamber 11.

Based on this, please refer to FIG5 , the nozzle 1 includes a liquid storage bin 16, which forms the above-mentioned common area, and the liquid storage bin 16 can be located at the far end of the suction chamber 11 and is in fluid communication with the suction chamber 11, that is, with the nozzle 1 being located above the atomizing assembly 22 as a reference, the liquid storage bin 16 is located below the suction chamber 11. The liquid storage bin 16 can collect condensed liquid formed on the wall of the suction chamber 11, and the first airflow channel A1 and the second airflow channel A2 are both in fluid communication with the suction chamber 11 via the liquid storage bin 16.

Referring to Figure 5, the aerosol generating device may further include a seal 15 defining a distal boundary of the liquid storage bin 16, the seal 15 having a first columnar portion 155 and a second columnar portion 156 extending toward the proximal end of the nozzle 1 and thereby exceeding the distal end of the liquid storage bin, that is, the proximal ends of the first columnar portion 155 and the second columnar portion 156 are both located above the bottom of the liquid storage bin 16, the first columnar portion 155 and the second columnar portion 156 can prevent the liquid in the liquid storage bin 16 from spreading into the first vent hole 151 and the second vent hole 152, thereby preventing the liquid from flowing to the sensor assembly 5 through the second air flow channel A2.

Please refer to Figure 5. The seal 15 may include a flexible portion 153. The flexible portion 153 may be made of a flexible material such as silicone or rubber. The flexible portion 153 is configured to connect to the first bracket 21 to seal the proximal end of the accommodating cavity. The seal 15 may also include a rigid portion 154. The hardness of the rigid portion 154 is greater than the hardness of the flexible portion 153. With the nozzle 1 located above the atomizer assembly 22 as a reference, the rigid portion 154 defines the bottom of the liquid storage bin 16. The flexible portion 153 is located below the rigid portion 154 and supports the rigid portion 154. The rigid portion 154 has a first opening. The flexible portion 153 has a flexible column extending toward the liquid storage bin 16 and having a proximal end higher than the bottom of the liquid storage bin. Part of the flexible column defines the first vent 151, and part of the flexible column defines the second vent 152. The corresponding passages of the flexible column The first opening extends into the liquid storage chamber 16 .

Please refer to FIG. 2 and FIG. 5. Relative to the proximal end of the main body 2, the installation position of the atomizer assembly 22 is closer to the distal end of the main body 2, that is, the atomizer assembly 22 is disposed adjacent to the distal end of the main body 2. Relative to the distal end of the main body 2, the installation position of the sensor assembly 5 is closer to the proximal end of the main body 2, that is, the sensor assembly 5 is disposed adjacent to the proximal end of the main body 2. Compared with the atomizer assembly 22, the installation position of the sensor assembly 5 can be closer to the mouthpiece 1. On the one hand, it makes it difficult for liquid leaking from the atomizer assembly 22 or condensed liquid in the first airflow channel A1 to enter the sensor assembly 5 closer to the mouthpiece 1 or closer to the proximal end of the main body 2, which can reduce the probability of abnormal triggering of the airflow sensor 52; on the other hand, it makes the triggering path (second airflow channel Q2) between the sensor assembly 5 and the mouthpiece 1 shorter, which can effectively improve the triggering sensitivity of the airflow sensor 52.

Referring to FIG. 4 , a liquid injection port 214 communicating with the accommodating cavity is provided at the proximal end of the main body 2, and the liquid matrix 3 can be injected into the accommodating cavity through the liquid injection port 214. The suction nozzle 1 can be connected to the proximal end of the main body 2 by assembly. When the suction nozzle 1 is not installed on the main body 2, the air flow port of the first air flow channel A1, the air flow port of the first air flow channel A1, and the liquid injection port 214 can be exposed, so that the liquid matrix 3 can be injected into the accommodating cavity through the liquid injection port 214. When the suction nozzle 1 is installed on the main body 2, the sealing member 15 described in any of the above embodiments can seal the liquid injection port 214 to prevent the liquid matrix 3 from leaking through the liquid injection port 214.

In one example, compared with the atomizer assembly 22, the fluid intersection of the first airflow channel A1 and the second airflow channel A2 is closer to the mouthpiece 1, including the first airflow channel A1 and the second airflow channel A2 fluidly intersecting in the mouthpiece, or including the first airflow channel A1 and the second airflow channel A2 fluidly intersecting in the main body 2.

Please refer to FIGS. 2 and 5 , with the nozzle 1 being disposed above the atomizing assembly 22 as a reference, the sensor assembly 5 may be disposed above the atomizing assembly 22 .

It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification. Furthermore, it is possible for a person of ordinary skill in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present application.

Claims (14)

An aerosol generating device, characterized by comprising: A main body portion having a proximal end and a distal end, wherein the main body portion is provided with a receiving cavity for receiving a liquid matrix, and a first air flow channel and a second air flow channel which are independent of each other; A nozzle disposed at the proximal end of the main body; an atomizing assembly disposed adjacent to the distal end of the main body portion and configured to atomize the liquid matrix to generate an aerosol; a sensor assembly disposed adjacent to the proximal end of the main body portion for detecting changes in airflow; Wherein, the first air flow channel is communicated between the atomizing assembly and the suction nozzle, and the second air flow channel is communicated between the sensor assembly and the suction nozzle. The aerosol generating device according to claim 1, characterized in that the installation position of the sensor component on the main body is closer to the mouthpiece than the atomization component. The aerosol generating device according to claim 1 is characterized in that the mouthpiece has a first chamber and a second chamber spaced apart from each other, the proximal end of the mouthpiece is recessed to form an inhalation chamber, the first chamber is configured to provide a channel for the airflow in the first airflow channel to flow into the inhalation chamber, and the second chamber is configured to provide a channel for the airflow in the second airflow channel to flow into the inhalation chamber. The aerosol generating device according to claim 3 is characterized in that a spacer is provided in the mouthpiece, the spacer is provided between the first chamber and the second chamber, and the spacer has a guide slope inclined toward the first chamber and/or the second chamber. The aerosol generating device according to claim 3, characterized in that a sealing member is housed in the mouthpiece, and a sealing member is provided on the sealing member to connect the first airflow channel and the second A first vent hole in a chamber and a second vent hole connecting the second air flow channel and the second chamber. The aerosol generating device according to claim 5 is characterized in that the sealing member includes a flexible portion, and the flexible portion is configured to seal the containing cavity. The aerosol generating device according to claim 3, characterized in that the first chamber and the second chamber are arranged on opposite sides of the inhalation chamber. The aerosol generating device according to claim 1 is characterized in that the nozzle includes a liquid storage tank, and the proximal end of the nozzle is recessed to form an inhalation chamber, the first airflow channel and the second airflow channel are both connected to the inhalation chamber fluid via the liquid storage tank, and the liquid storage tank is used to collect condensed liquid formed on the wall of the inhalation chamber. The aerosol generating device according to claim 8 is characterized in that a sealing member is housed inside the mouthpiece, and the sealing member has a first columnar portion and a second columnar portion both extending toward the proximal end of the mouthpiece, a first vent hole connecting the first air flow channel and the liquid storage bin is formed in the first columnar portion, and a second vent hole connecting the second air flow channel and the liquid storage bin is formed in the second columnar portion. The aerosol generating device according to claim 1 is characterized in that the main body portion includes a first bracket and an airway tube that defines at least a portion of the first airflow channel, the accommodating cavity is formed in the first bracket, and a first connecting hole connected to the airway tube and a second connecting hole that defines at least a portion of the second airflow channel are formed at the proximal end of the first bracket, and the proximal end of the first bracket is connected to the nozzle. The aerosol generating device according to claim 1 is characterized in that the sensor assembly includes a mounting base having a detection cavity and an airflow sensor installed in the detection cavity of the mounting base, and the detection cavity is fluidically connected to the second airflow channel. The aerosol generating device according to claim 11 is characterized in that an external communication hole is provided on the main body portion to provide a communication path between one side of the airflow sensor and the external air, and the external communication hole is located at the proximal end of the main body portion. The aerosol generating device according to claim 1, characterized in that the airflow port of the first airflow channel and the airflow port of the second airflow channel are both located on the proximal end of the main body portion. The aerosol generating device according to claim 13 is characterized in that a liquid injection port connected to the accommodating cavity is opened on the proximal end of the main body part, and when the suction nozzle is not installed on the main body part, the airflow port of the first airflow channel, the airflow port of the first airflow channel and the liquid injection port are all exposed.