WO2021143837A1 - Aerosol generating device and heater - Google Patents

Abstract

An aerosol generating device, comprising: a chamber (30), that is for receiving a vapable material (A), the chamber having a first radial direction and a second radial direction that are perpendicular to one another; and a first infrared emitter (21) and a second infrared emitter (22) that are arranged along the first radial direction of the chamber, and that are used to radiate infrared rays to the chamber so as to heat the vapable material, the first infrared emitter and the second infrared emitter at least partially extending along the second radial direction, thereby defining the chamber between the first infrared emitter and the second infrared emitter, and such that the size of the chamber along the second radial direction is greater than that along the first radial direction. In the foregoing aerosol generating device, a first infrared emitter and a second infrared emitter are oppositely disposed and define and form a chamber the size of which is smaller along a first radial direction than that along a second radial direction, thereby increasing the ability and efficiency of absorbing infrared rays in a vapable material, such that a surface layer and the interior of the vapable material can be relatively uniformly heated.

Description

Aerosol generating device and heater

This application claims to be submitted to the Chinese Patent Office on January 16, 2020. The application number is 2020100481609, and the application name is "Aerosol Generating Device". The entire content of the Chinese patent application is incorporated into this application by reference.

Technical field

The embodiments of the present application relate to the technical field of heating non-combustion smoking appliances, and in particular to an aerosol generating device.

Background technique

Tobacco products (e.g., cigarettes, cigars, etc.) burn tobacco to produce tobacco smoke during use. People are trying to replace these tobacco-burning products by making products that release compounds without burning.

Examples of such products are heating devices that release compounds by heating rather than burning materials. For example, the material may be tobacco or other non-tobacco products, which may or may not contain nicotine. As another example, there is an infrared heating device that heats tobacco products by means of infrared radiation to release compounds to generate aerosols. For example, as a known technology, Patent No. 201821350103.0 proposes a heating device structure in which a nanometer far-infrared coating and a conductive coating are sequentially formed on the outer surface of a quartz tube. After the conductive coating is connected to the power supply, the nanometer far-infrared coating is When the power supply heats itself, and at the same time, it forms an electronic transition to produce far-infrared, which is radiated to the tobacco product in the quartz tube to heat the tobacco product; in the implementation, the radiated infrared is absorbed on the surface of the tobacco product, and the tobacco product The inside of the tobacco product is difficult to be heated, which hinders the utilization rate of the tobacco product.

Application content

In order to solve the problem of insufficient heating efficiency of the heating device inside the tobacco product in the prior art, an embodiment of the present application provides an aerosol generating device.

Based on the above, the aerosol generating device of the present application is used to heat the smokable material to generate an aerosol for smoking; including:

Chamber for receiving smokable materials;

The cavity has a first radial direction and a second radial direction perpendicular to the first radial direction;

A first infrared emitter and a second infrared emitter arranged along the first radial direction of the chamber are configured to radiate infrared rays to the chamber to heat the smokable material, the first infrared emitter and the second infrared emitter The infrared transmitter at least partially extends along the second radial direction, thereby defining the cavity between the first infrared transmitter and the second infrared transmitter, and making the cavity along the second radial direction The dimension in the direction is greater than the dimension in the first radial direction.

In a preferred implementation, the first infrared transmitter and the second infrared transmitter are separated from each other.

In a preferred implementation, there is a certain distance between the first infrared emitter and the second infrared emitter to form an airflow channel for external air to enter the chamber.

In a preferred implementation, the first infrared emitter is configured to be movable in the first radial direction relative to the second infrared emitter to change the size of the cavity in the first radial direction.

In a preferred implementation, the first infrared transmitter has a first position and a second position opposite to the second infrared transmitter, and can be in the first position and the second position along the first radial direction. Between moving relative to the second infrared transmitter; wherein,

The size of the cavity in the first radial direction when the first infrared transmitter is in the first position is smaller than the size of the cavity in the first radial direction when in the second position .

In a preferred implementation, it further includes a holding mechanism configured to stably hold the first infrared emitter in the first position and/or the second position.

In a preferred implementation, it further includes a biasing element configured to bias the first infrared emitter toward the second position.

In a preferred implementation, the first infrared emitter and/or the second infrared emitter are configured in a sheet shape extending along the second radial direction.

In a preferred implementation, the first infrared emitter and/or the second infrared emitter are configured in an arc shape that is curved outward along the first radial direction of the cavity.

In a preferred implementation, the first infrared transmitter or the second infrared transmitter includes:

Matrix; and,

An infrared emitting coating formed on the surface of the substrate or an infrared emitting film bonded to the surface of the substrate.

In the above aerosol generating device, the first infrared emitter and the second infrared emitter are arranged opposite to each other and define a cavity with a size in the first radial direction smaller than the size in the second radial direction, and the radiated infrared rays and the suckable The distance between the inner center of the material is reduced, so that the ability and efficiency of the suckable material to absorb infrared rays can be improved, so that the surface and the inside of the smokable material can be heated relatively uniformly.

Description of the drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings. These exemplified descriptions do not constitute a limitation on the embodiments. The elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the attached drawings do not constitute a scale limitation.

FIG. 1 is a schematic diagram of the structure of an aerosol generating device provided in an embodiment after assembling;

2 is a schematic cross-sectional view of the heating mechanism of the aerosol generating device in FIG. 1;

3 is a schematic cross-sectional view of the heating mechanism in FIG. 2 moving to a second position;

4 is a schematic diagram of the holding mechanism of the heating mechanism in FIG. 2;

Fig. 5 is a schematic diagram of a first infrared transmitter proposed in another embodiment;

Figure 6 is a schematic cross-sectional view of a heating mechanism provided by another embodiment;

Fig. 7 is a schematic diagram of a smokable material provided by another embodiment.

Detailed ways

In order to facilitate the understanding of the application, the application will be described in more detail below with reference to the drawings and specific implementations.

An embodiment of the present application proposes an aerosol generating device that heats rather than burns a smokable material such as a cigarette, and then volatilizes or releases at least one component of the smokable material to form an aerosol for smoking. Based on the preferred implementation, the aerosol generating device heats the smokable material by radiating far-infrared rays with heating effect; for example, the far-infrared rays of 3μm～15μm, when in use, the wavelength of the smokable material When the absorption wavelength of the volatile components of the material matches, the energy of the infrared rays is easily absorbed by the smokable material, and the smokable material is heated to volatilize at least one volatile component to generate an aerosol for smoking.

The structure of the aerosol generating device according to an embodiment of the present application can be seen as shown in FIG.

The housing 10 has a hollow structure inside, thereby forming an assembly space for necessary functional components such as infrared radiation; the housing 10 has a proximal end 110 and a distal end 120 opposite along the length direction; wherein the proximal end 110 is provided with a receiver A hole 111 through which the smokable material A can be received in the housing 10 to be heated or removed from the housing 10.

In order to heat the smokeable material A received in the housing 10 by radiating infrared rays, an infrared emitter 20 for heating is further provided in the housing 10, and the structure of an embodiment can be seen in FIGS. 2 to As shown in Figure 3, it includes:

The housing 10 is provided with a cavity 30 for receiving the smokable material A;

The infrared transmitter 20 includes a first infrared transmitter 21 and a second infrared transmitter 22 arranged around the cavity 30; specifically, the first infrared transmitter 21 and the second infrared transmitter 22 may be configured according to the structure shown in the figure. The structure and content of are exactly the same, and both include two parts:

The base part 211/221, as a rigid supporting substrate material, can be made of high temperature resistant and infrared transparent materials such as quartz glass, ceramic or mica in implementation;

The infrared emitting coating 212/222 formed on the base portion 211/221, the infrared emitting coating 212/222 can make itself heat and radiate infrared rays that can be used to heat the smokeable material A when energized, such as the above Far infrared rays from 3μm to 15μm. When the wavelength of the infrared rays matches the absorption wavelength of the volatile components of the smokable material A, the energy of the infrared rays is easily absorbed by the smokable material A.

Generally, the mid-infrared emission coating 212/222 may be a coating made of ceramic materials such as zirconium, or Fe-Mn-Cu, tungsten, or transition metals and their oxide materials.

In a preferred implementation, the infrared emitting coating 212/222 is preferably composed of oxides of at least one metal element such as Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, and Zn. When the oxide is heated to an appropriate temperature, it can radiate far-infrared rays with heating effect; the thickness of the coating can preferably be controlled from 30μm to 50μm; the method formed on the surface of the substrate part 211/221 can pass the oxides of the above metal elements through the atmosphere Plasma spraying is sprayed on the surface of the substrate part 211/221 and then cured, that is, the infrared emitting film bonded to the surface of the substrate.

The above-mentioned first infrared emitter 21 and second infrared emitter 22 are constructed in an arc shape in cross section in the figure, so that it is relatively easy to form an infrared emitting coating 212/222 on their surfaces respectively.

Further in a preferred implementation, the first infrared emitter 21 and the second infrared emitter 22 can be independently powered or controlled, so as to independently radiate infrared rays to heat different parts of the smokable material A. Specifically, in terms of optional control methods, the first infrared transmitter 21 and the second infrared transmitter 22 can be activated alternately or simultaneously.

Further from the implementation of the heating state shown in FIGS. 2 to 4, the shape of the chamber 30 is a flat shape, specifically an elliptical shape in FIG. 2, that is, the size along the vertical direction r1 is smaller than the size in the horizontal direction r2, Therefore, the first infrared emitter 21 and the second infrared emitter 22 have a relatively larger radiation area for the smokable material A.

Further in a preferred implementation, the first infrared transmitter 21 and the second infrared transmitter 22 are separated from each other and can be moved relative to each other. For details, refer to FIG. 2 and FIG. 3:

In FIG. 2, the first infrared emitter 21 and the second infrared emitter 22 are in a first position. In the first position, the smokable material A is received in the cavity 30 and basically maintains its own shape, usually according to the product's shape. The structure familiar to the preparation and the user is usually a cylindrical shape with a circular cross-section;

The first infrared transmitter 21 and the second infrared transmitter 22 in FIG. 2 are relatively close in the directions shown by arrows R1 and R2 in FIG. 2, respectively, to the second position shown in FIG. 3; in the second position, the first The infrared emitter 21 and the second infrared emitter 22 respectively surround and squeeze the smokable material A, so that it deforms, and can be squeezed into a column with an elliptical cross section as shown in FIG. 3; at this time, Starting the first infrared emitter 21 and the second infrared emitter 22, the distance between the radiated infrared rays and the inner center O of the smokable material A is greatly reduced, so that the smokable material can be improved compared to the state in FIG. 2 The ability and efficiency of infrared absorption inside A enables both the surface and the inside of the smokable material A to be heated relatively uniformly.

In order to facilitate the relative movement operation of the first infrared transmitter 21 and the second infrared transmitter 22, in the preferred implementation shown in FIGS. 2 and 3, a biasing element is also provided in the housing 10, and the biasing element is configured To bias the first infrared transmitter toward the second position. Specifically, the biasing element includes a first spring 41 and a second spring 42, which are stretched in FIG. 3 and provide an elastic restoring force to make the first infrared emitter 21 and the second infrared emitter 22 face as shown in FIG. The first position is offset so as to facilitate the removal of the smokable material A after the suction is completed.

Of course, in an optional implementation, in order to enable the first infrared transmitter 21 and the second infrared transmitter 22 to be stably maintained at different positions, respectively, a holding mechanism may be provided in the housing 10, as shown in FIG. 4 The first holding element 51 shown on the first infrared transmitter 21 is a mechanical connection mechanism such as a magnet, a buckle, etc.; and it can be located on the second infrared transmitter 22 and can cooperate with the first holding element 51 to form a fixation Or the connected second holding element 52 makes it hold in a different position.

In the implementation of yet another variant, as shown in FIG. 5, the infrared emitting coating 212a of the first infrared emitter 21a is formed on the outer surface away from the chamber 30, or is wound around the first infrared emitter 21a away from The infrared emitting film on the outer surface of the chamber 30, such as a zinc oxide film, a graphene film, an indium oxide film doped with rare earth metals, and the like. At the same time, in order to facilitate the supply of power to the infrared emitting coating 212a to radiate infrared rays, the upper and lower ends of the outer surface of the first infrared emitter 21a are respectively formed with first conductive coatings with excellent conductivity such as silver, gold or copper. 213a and the second conductive coating 214a; subsequently, the infrared emitting coating 212a is supplied with power by connecting with the power supply device by welding a lead or sheathing a conductive ring.

Further in the implementation of a variant, the structure of the infrared transmitter 20b can be seen as shown in FIG. 6, including:

The first infrared emitter 21b and the second infrared emitter 22b are configured in a sheet shape; and the first infrared emitter 21b and the second infrared emitter 22b are arranged on opposite sides of the chamber 30b; and may be opposite to each other Move, so as to squeeze the smokable material A received in the cavity 30b, so that the smokable material A is squeezed into an ellipse in FIG. 3 to improve the efficiency of infrared penetration to the center, so that it can be pumped Both the surface and the inside of the absorbent material A can be heated relatively uniformly.

In yet another alternative implementation, referring to FIG. 7, the smokable material A is configured into a square or sheet shape different from the conventional cylindrical shape, and the first infrared emitter 21c of the infrared emitter 20c and The second infrared emitters 22c are arranged opposite to each other along the thickness direction of the smokable material A, so that the block-shaped smokable material A adapted to the cavity 30c can have a larger surface area to improve the absorption efficiency of infrared rays. The heating efficiency also enables the surface and the inside of the smokable material A to be heated more uniformly.

And during the suction process using the above aerosol generating device, see Fig. 3, Fig. 4 or Fig. 7 as shown by arrow R3, the outside air can be removed from the first infrared emitter 21/21c and the second infrared emitter 22/ The space between 22c enters into the chamber 30/30c from both sides until it is sucked through the smokable material A.

It should be noted that the specification and drawings of this application give preferred embodiments of this application, but are not limited to the embodiments described in this specification. Further, for those of ordinary skill in the art, Improvements or transformations are made according to the above description, and all these improvements and transformations should belong to the protection scope of the appended claims of this application.

Claims (10)

An aerosol generating device for heating a smokable material to generate an aerosol for smoking; it is characterized in that it comprises: Chamber for receiving smokable materials; The cavity has a first radial direction and a second radial direction perpendicular to the first radial direction; The first infrared emitter and the second infrared emitter arranged along the first radial direction of the chamber are configured to radiate infrared rays to the chamber to heat the smokable material, the first infrared emitter and the second infrared emitter The infrared transmitter at least partially extends along the second radial direction, thereby defining the cavity between the first infrared transmitter and the second infrared transmitter, and making the cavity along the second radial direction The dimension in the direction is greater than the dimension in the first radial direction. The aerosol generating device of claim 1, wherein the first infrared emitter and the second infrared emitter are separated from each other. 3. The aerosol generating device of claim 2, wherein the first infrared emitter and the second infrared emitter are spaced a certain distance apart to form an air flow channel for external air to enter the chamber. The aerosol generating device according to any one of claims 1 to 3, wherein the first infrared emitter is configured to be movable relative to the second infrared emitter along the first radial direction to change The size of the cavity in the first radial direction. The aerosol generating device according to claim 4, wherein the first infrared emitter has a first position and a second position opposite to the second infrared emitter, and can be along the first radial direction Move between the first position and the second position relative to the second infrared transmitter; wherein, The size of the cavity in the first radial direction when the first infrared transmitter is in the first position is smaller than the size of the cavity in the first radial direction when in the second position . The aerosol generating device according to claim 5, further comprising a holding mechanism configured to stably hold the first infrared emitter in the first position and/or the second position. 8. The aerosol generating device of claim 5, further comprising a biasing element configured to bias the first infrared emitter toward the second position. The aerosol generating device according to any one of claims 1 to 3, wherein the first infrared emitter and/or the second infrared emitter are configured as a sheet extending along the second radial direction. shape. The aerosol generating device according to any one of claims 1 to 3, wherein the first infrared emitter and/or the second infrared emitter are configured to be along a first radial direction of the chamber An arc that curves outward. The aerosol generating device according to any one of claims 1 to 3, wherein the first infrared transmitter or the second infrared transmitter comprises: Matrix; and, An infrared emitting coating formed on the surface of the substrate or an infrared emitting film bonded to the surface of the substrate.

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