CN217851368U - Airflow heating device and aerosol generating device - Google Patents

Abstract

The embodiment of the application relates to the technical field of aerosol generating devices, and discloses an air flow heating device and an aerosol generating device, the air flow heating device comprises an air guide assembly and a heating assembly, the air guide assembly is provided with a plurality of first air guide channels which are communicated along a first direction, the air guide assembly comprises a graphene material, the heating assembly is arranged on the periphery and/or inside the air guide assembly, the heating assembly is used for heating the air guide assembly, so that gas flowing through the first air guide channels is heated, the air guide assembly with the main component being the graphene material is provided with a higher heat conductivity coefficient, the efficiency of the heating assembly in the heating process can be higher, and the heating uniformity of the air guide assembly is better.

Description

Airflow heating device and aerosol generating device

Technical Field

The embodiment of the application relates to the technical field of aerosol generating devices, in particular to an airflow heating device and an aerosol generating device.

Background

Tobacco products are mainly marketed in the form of cigarettes, cigars, tobacco shreds and redried tobacco leaves. Tobacco products, however, produce a significant amount of toxic substances after combustion. The active component in cigarette is mainly nicotine. During smoking, nicotine is inhaled into the alveoli and is rapidly absorbed by the smoker, along with nicotine aerosols generated upon combustion of the cigarette. Once nicotine is absorbed into the smoker's blood, the nicotine then affects the nerve endings of the smoker's central nervous system.

Nowadays, with the development and popularization of aerosol generating device technology, electronic cigarettes gradually come into the field of vision of the public and are popularized. The electronic cigarette mainly generates aerosol with specific smell for smokers by heating and atomizing tobacco tar.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application aims at providing an air flow heating device and an aerosol generating device to improve the current situation that conventional contact heating devices are uneven and insufficient in heating, and are not favorable for user experience, such as the amount of smoke is small.

The embodiment of the application adopts a technical scheme that: the airflow heating device comprises an air guide assembly and a heating assembly, wherein the air guide assembly is provided with a plurality of first air guide channels which penetrate along a first direction, the air guide assembly comprises a graphene material, and the air guide assembly comprises one or more graphene sheets; the heating assembly is arranged at the periphery and/or inside of the air guide assembly and used for heating the air guide assembly so as to heat the air flowing through the first air guide channel.

Optionally, the graphene sheet has a thickness of less than or equal to 0.1mm; alternatively, the graphene sheet has a thickness of less than or equal to 0.05mm.

Optionally, the graphene sheet is in a wave shape or a zigzag shape, one graphene sheet is wound to form the air guide assembly, or a plurality of graphene sheets are stacked and then wound to form the air guide assembly.

Optionally, the graphene sheet is rolled into a cylindrical shape, a plurality of graphene sheets with different diameters are sequentially sleeved to form an annular shape, and two adjacent graphene sheets jointly enclose to form the first gas guide channel; or the graphene sheets are rolled into a rectangular cylinder shape, a plurality of graphene sheets with different cross-sectional areas are sequentially sleeved to form a loop shape, two adjacent graphene sheets jointly enclose to form the first gas guide channel, and the cross sections of the graphene sheets are perpendicular to the winding axis of the graphene sheets.

Optionally, the graphene sheet is provided with a first support portion, the first support portion protrudes from the graphene sheet towards a winding axis of the graphene sheet, and the first support portion abuts against another adjacent graphene sheet close to the winding axis; or, the graphene sheet is provided with a first supporting part, the first supporting part deviates from the graphene sheet, the winding axis of the graphene sheet is protruded, and the first supporting part is adjacent to another graphene sheet and is far away from the winding axis.

Optionally, the air guide assembly further comprises a graphene air guide tube, the graphene air guide tube is sleeved in the innermost side of the graphene sheet, at least part of the outer surface of the graphene air guide tube is abutted to the innermost side of the graphene sheet, a second air guide channel is formed in the graphene air guide tube, and the second air guide channel is used for installing a temperature measuring element and/or providing air for circulation.

Optionally, the graphene sheet is provided with second supporting portions, a plane of the graphene sheet is parallel to the first direction, the plurality of second supporting portions are sequentially arranged on the surface of the graphene sheet at intervals along the second direction, each second supporting portion extends along the first direction, the plurality of graphene sheets are sequentially stacked along a third direction, the plurality of graphene sheets and the plurality of second supporting portions jointly enclose the first air guide channel, and the first direction, the second direction and the third direction are perpendicular to each other.

Optionally, the heating assembly comprises a metal heating net, an FPC heating film or a resistance heating wire.

Optionally, the heating assembly includes a heating portion and an electrode, the heating portion is sleeved on the outer peripheral surface of the air guide assembly, one end of the electrode is connected to the heating portion, and the other end of the electrode is used for being electrically connected with an external power supply.

The embodiment of the application further provides an aerosol generating device, which comprises a shell and the airflow heating device, wherein the shell is provided with an accommodating cavity extending along a first direction, at least one end of the accommodating cavity is communicated with the outside, and the accommodating cavity comprises a first cavity and a second cavity which are communicated along the first direction; the airflow heating device is mounted to the first chamber, the second chamber is for at least partial insertion of an aerosol-generating article, and the airflow heating device is for heating the aerosol-generating article.

Optionally, the outer casing includes inner tube portion and outer tube portion, the inside of inner tube portion is equipped with accept the chamber, the cavity has been enclosed jointly between inner tube portion and the outer tube portion, the cavity is the negative pressure state, or the cavity is filled with inert gas, or the cavity is filled with low thermal conductivity medium.

Optionally, the shell is a single-layer tube, the accommodating cavity is arranged in the single-layer tube, and the thermal conductivity of the single-layer tube is smaller than that of the air guide assembly.

The air current heating device comprises an air guide assembly and a heating assembly, the air guide assembly is provided with a plurality of first air guide channels which are communicated along a first direction, the air guide assembly comprises a graphene material, the heating assembly is arranged on the periphery and/or inside the air guide assembly, the heating assembly is used for heating the air guide assembly, so that gas flowing through the first air guide channels is heated, the air guide assembly with the main component being the graphene material has a higher heat conductivity coefficient, the efficiency of the heating assembly in the heating process can be higher, and the heating uniformity of the air guide assembly is better.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is an exploded view of an embodiment of the present application from a perspective of an airflow heating apparatus.

FIG. 2 is a schematic view of a perspective of an air guide assembly of an airflow heating apparatus according to an embodiment of the present application.

FIG. 3 is a schematic view of a perspective view of an air guide assembly of an airflow heating apparatus according to another embodiment of the present application.

FIG. 4 is a schematic view of a perspective view of an air guide assembly of an airflow heating apparatus according to yet another embodiment of the present application.

FIG. 5 is a schematic view of a stack of gas directing members of a further embodiment of the airflow heating apparatus of the present application.

Figure 6 is a cross-sectional view from a perspective of an aerosol-generating device according to embodiments of the present application.

Figure 7 is a cross-sectional view from a perspective of a housing in an aerosol-generating device according to an embodiment of the present application.

Figure 8 is a cross-sectional view from a perspective of another embodiment of an aerosol-generating device according to the present application.

Detailed Description

To facilitate an understanding of the present application, the present application is described in more detail below with reference to the figures and the detailed description. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used herein, the terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship as shown in the drawings for convenience in describing the present application and simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In addition, the technical features mentioned in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 and 2, the air flow heating apparatus 100 includes an air guide unit 10 and a heating unit 20, the heating unit 20 is disposed at a periphery of the air guide unit 10, the air guide unit 10 is used for air to flow through, the heating unit 20 is electrically connected to an external power source, and the heating unit 20 is used for heating the air guide unit 10, so as to heat air flowing through the air guide unit 10. It should be noted that in some embodiments, the heating element 20 may be disposed on the outer periphery of the air guide 10, or may be spaced from the outer periphery of the air guide 10, and of course, the heating element 20 may also be disposed inside the air guide 10 to heat the air guide 10.

With respect to the gas guide 10 described above, the gas guide 10 has a plurality of first gas guide passages 12 penetrating the gas guide 10 in the first direction X, and the plurality of first gas guide passages 12 are used for the circulation of gas. The air guide assembly 10 at least includes graphene material, that is, the air guide assembly 10 is made of pure graphene material, or made of graphene material and other materials with high thermal conductivity, so that the thermal conductivity of the air guide assembly 10 is greater than or equal to 600W/mK, and in some embodiments, the thermal conductivity of the air guide assembly 10 is greater than or equal to 1500W/mK. The material with high thermal conductivity refers to a material with a thermal conductivity of more than or equal to 200W/mK, such as at least one or more of diamond, silver, copper, gold, aluminum and the like.

The air guide assembly 10 made of the graphene material or the air guide assembly 10 made of the mixed material with the high graphene content ratio has the characteristic of high heat conduction efficiency, and can well meet the requirements of small volume and high heating efficiency of products such as electronic cigarettes.

The gas guide 10 includes one or more graphene sheets 11, the graphene sheets 11 having a thickness of 0.1mm or less, and in some embodiments, the graphene sheets 11 having a thickness of 0.05mm or less. Because the diameter of the air guide assembly 10 is about 6 mm, on the premise of ensuring the strength, the thickness of the graphene sheet 11 should be as thin as possible, on one hand, on the premise that the volume of the air guide assembly 10 is not changed, the thinner graphene sheet 11 can be used for planning more first air guide channels 12, and meanwhile, compared with the air guide assembly 10 manufactured by integral molding, the air guide assembly 10 composed of the sheet graphene sheets 11 is lighter in weight and less in used materials; on the other hand, the thinner graphene sheet 11 is also more convenient in secondary fabrication of the air guide assembly 10, increasing the realizability of various forms of the air guide assembly 10.

In some embodiments, referring to fig. 2, after the graphene sheet 11 is processed into a wave-shaped or zigzag-shaped form, the gas guide assembly 10 is formed by winding, and the wave-shaped or zigzag-shaped protrusions and the recesses cooperate with each other to form a plurality of first gas guide channels 12. Of course, it is also possible to stack a plurality of graphene sheets 11 in a wave and/or zigzag shape in a staggered manner and then wind the graphene sheets to form the air guide assembly 10.

In some embodiments, referring to fig. 3, a plurality of graphene sheets 11 are wound to form a cylindrical shape or a rectangular cylindrical shape, a plurality of graphene sheets 11 with different diameters or different cross-sectional areas are sequentially sleeved to form a ring shape or a circular shape, and a first gas guide channel 12 is formed between two adjacent graphene sheets 11. Wherein the cross section of the graphene sheet 11 is perpendicular to the winding axis of the graphene sheet 11.

The graphene sheet 11 is provided with a plurality of first supporting portions 111, the plurality of first supporting portions 111 protrude from the graphene sheet 11 toward a winding axis of the graphene sheet, that is, the plurality of first supporting portions 111 are recessed in the graphene sheet 11, and the plurality of first supporting portions 111 abut against the surface of another adjacent graphene sheet 11 close to the winding axis to form a plurality of first gas guide channels.

The graphene sheet 11 is provided with a plurality of first supporting parts 111, the plurality of first supporting parts 111 protrude from the graphene sheet 11 towards a winding axis deviating from the graphene sheet 11, that is, the plurality of first supporting parts 111 protrude outwards from the graphene sheet 11, and the plurality of first supporting parts 111 abut against the surface of another adjacent graphene sheet 11 away from the winding axis to form a plurality of first air guide channels.

In some embodiments, the gas guide assembly 10 further includes a graphene gas guide tube 13, and at least a portion of the graphene gas guide tube 13 is made of graphene. The graphene gas guide tube 13 is sleeved inside the innermost graphene sheet 11, that is, at least part of the outer surface of the graphene gas guide tube 13 abuts against the surface of the innermost graphene sheet 11, a second gas guide channel 131 is arranged inside the graphene gas guide tube 13, the second gas guide channel 131 penetrates through the graphene gas guide tube 13, and the second gas guide channel 131 is used for installing a temperature measuring element and/or supplying gas to circulate. Of course, in some embodiments, second gas guide channel 131 may be blind.

In some embodiments, referring to fig. 4 and 5, the graphene sheet 11 is provided with second supporting portions 112, a plane of the graphene sheet 11 is parallel to the first direction X, a plurality of the second supporting portions 112 are sequentially disposed on the surface of the graphene sheet 11 at intervals along the second direction Y, each of the second supporting portions 112 extends along the first direction X, the plurality of graphene sheets 11 are sequentially stacked along the third direction Z, and the plurality of graphene sheets 11 and the plurality of second supporting portions 112 together enclose the first gas guide channel 12, wherein the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. Of course, in some embodiments, the plurality of graphene sheets 11 and the plurality of second supporting portions 112 may be linearly stacked, or may be symmetrically stacked.

Referring to the heating element 20, please refer to fig. 1, the heating element 20 includes a heating portion 21 and an electrode 22, the heating portion 21 is disposed on the outer peripheral surface of the air guide element 10, one end of the electrode 22 is electrically connected to the heating portion 21, and the other end of the electrode 22 is electrically connected to an external power source. When the external power supply supplies power to the heating part 21, the heating part 21 generates heat to heat the air guide unit 10. In some embodiments, the heating assembly 20 includes one or more of a metal heating mesh, an FPC heating film or an electrical resistance heating wire, and an electrical resistance heating rod, and the heating assembly 20 may be disposed on the outer circumferential surface of the air guide assembly 10, may be disposed inside the air guide assembly 10, or may be disposed on both the outer circumferential surface and the inside of the air guide assembly 10 to improve the heating efficiency of the air guide assembly 10.

The airflow heating device 100 in the embodiment of the application comprises an air guide assembly 10 and a heating assembly 20, wherein the air guide assembly 10 is provided with a plurality of first air guide channels 12 which are communicated along a first direction X, the air guide assembly 10 comprises a graphene material, the heating assembly 20 is arranged at the periphery and/or inside the air guide assembly 10, the heating assembly 20 is used for heating the air guide assembly 10, so that gas flowing through the first air guide channels 12 is heated, the air guide assembly 10 mainly made of the graphene material has a high heat conductivity coefficient, the heating assembly 20 can be higher in efficiency in a heating process, and the heating uniformity of the air guide assembly 10 is better.

The present application further provides an aerosol-generating device 1000 embodiment, please refer to fig. 6 to 8, the aerosol-generating device 1000 includes a housing 200 and an airflow heating device 100, the housing 200 is provided with a receiving cavity 201 extending along a first direction X, at least one end of the receiving cavity 201 is communicated with the outside, the receiving cavity 201 includes a first cavity 2011 and a second cavity 2012 which are communicated with each other, wherein the first cavity 2011 is configured to receive the airflow heating device 100, the second cavity 2012 is configured to insert an aerosol-generating article, and an airflow heated by the airflow heating device 100 enters the inside of the aerosol-generating article to heat the aerosol-generating article. For the specific structure and function of the airflow heating device 100, reference may be made to the above-mentioned embodiments, and details are not repeated here. It is understood that the first chamber 2011 and the second chamber 2012 may be integrally formed and manufactured by the housing 200, or may be manufactured by a later process, a partition or the like may be disposed between the first chamber 2011 and the second chamber 2012, but at least a portion of the first chamber 2011 and the second chamber 2012 are in air communication so as to facilitate air circulation.

In some embodiments, the outer casing 200 includes an inner pipe portion 202 and an outer pipe portion 203, the inner pipe portion 202 is provided with a receiving cavity 201, the outer pipe portion 203 is disposed around the inner pipe portion 202, a closed cavity 204 is formed between the outer pipe portion 203 and the inner pipe portion 202, and the closed cavity 204 is in a vacuum state or filled with an inert gas with low thermal conductivity, so that the temperature of the outer pipe portion 203 of the outer casing 200 is lower than that of the inner pipe portion 202, and a thermal insulation effect can be achieved. It should be noted that when the inside of the closed cavity 204 is in a vacuum state, it does not mean that the inside of the closed cavity 204 is completely vacuum, but it should be understood that the pressure inside the closed cavity 204 is lower than the standard atmospheric pressure, that is, the closed cavity 204 is in a negative pressure state, and the degree of vacuum is used to measure the rarefaction degree of the gas inside the closed cavity 204.

It is understood that in some embodiments, the outer pipe portion 203 and the inner pipe portion 202 together form a cavity 204 communicating with the outside, and the cavity 204 is filled with a medium with low thermal conductivity, such as glass fiber, asbestos, rock wool, silicate, and other heat insulating materials.

In some embodiments, the housing 200 is a single-layer tube 205, the single-layer tube 205 is provided with a receiving cavity 201 inside, and the single-layer tube 205 is made of a material with low thermal conductivity, including but not limited to one or more of ceramics, glass, polyethylene, nylon, asbestos, polystyrene, cork, and the like. In some embodiments, the inner wall surface and/or the outer wall surface of the single-layer tube 205 may be coated with a thermal insulation coating to reduce heat loss in the receiving cavity 201, and at the same time, to prevent the outer wall surface of the single-layer tube 205 from being overheated.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (12)

1. An airflow heating device for heating an aerosol-generating article, comprising:

the gas guide assembly is provided with a plurality of first gas guide channels which penetrate along a first direction, comprises a graphene material and comprises one or more graphene sheets; and

the heating assembly is arranged at the periphery and/or inside of the air guide assembly and used for heating the air guide assembly so as to heat the gas flowing through the first air guide channel.

2. A gas-flow heating apparatus according to claim 1,

the thickness of the graphene sheet is less than or equal to 0.1mm; alternatively, the first and second electrodes may be,

the thickness of the graphene sheet is less than or equal to 0.05mm.

3. A gas stream heating apparatus as claimed in claim 1,

the graphene sheets are in a wave shape or a fold shape, one graphene sheet is wound to form the air guide assembly, or a plurality of graphene sheets are stacked and then wound to form the air guide assembly.

4. A gas flow heating apparatus as claimed in claim 1, wherein:

the graphene sheets are rolled into a cylindrical shape, a plurality of graphene sheets with different diameters are sequentially sleeved to form an annular shape, and two adjacent graphene sheets jointly enclose to form the first gas guide channel; alternatively, the first and second electrodes may be,

the graphene sheets are rolled into a rectangular cylinder shape, a plurality of graphene sheets with different cross-sectional areas are sequentially sleeved to form a loop shape, two adjacent graphene sheets jointly enclose to form the first air guide channel, and the cross sections of the graphene sheets are perpendicular to the winding axis of the graphene sheets.

5. A gas stream heating apparatus as claimed in claim 4, wherein:

the graphene sheet is provided with a first supporting part, the first supporting part protrudes from the graphene sheet to a winding axis of the graphene sheet, and the first supporting part is abutted against another adjacent graphene sheet close to the winding axis; alternatively, the first and second electrodes may be,

the graphene sheet is provided with a first supporting part, the first supporting part deviates from the graphene sheet, the winding axis of the graphene sheet is convex, and the first supporting part is adjacent to another graphene sheet and is far away from the winding axis in a butting mode.

6. A gas flow heating apparatus according to claim 5, characterised in that:

the air guide assembly further comprises a graphene air guide pipe, the graphene air guide pipe is sleeved on the innermost side inside the graphene sheet, at least part of the outer surface of the graphene air guide pipe is abutted to the innermost side graphene sheet, a second air guide channel is formed inside the graphene air guide pipe and is used for installing a temperature measuring element and/or providing air for circulation.

7. A gas-flow heating apparatus according to claim 1,

the graphene sheet is provided with second supporting parts, the plane where the graphene sheet is located is parallel to the first direction, the second supporting parts are sequentially arranged on the surface of the graphene sheet at intervals along the second direction, each second supporting part extends along the first direction, the graphene sheets are sequentially overlapped along a third direction, the graphene sheets and the second supporting parts jointly enclose and form the first air guide channel, and the first direction, the second direction and the third direction are perpendicular to each other.

8. A gas flow heating apparatus according to any one of claims 1 to 7,

the heating component comprises a metal heating net, an FPC heating film or a resistance heating wire.

9. A gas-flow heating apparatus according to any one of claims 1 to 7,

the heating assembly comprises a heating portion and an electrode, the heating portion is sleeved on the outer peripheral surface of the air guide assembly, one end of the electrode is connected to the heating portion, and the other end of the electrode is used for being electrically connected with an external power supply.

10. An aerosol-generating device, comprising:

the device comprises a shell, a first guide rail, a second guide rail, a first guide rail and a second guide rail, wherein the shell is provided with an accommodating cavity extending along a first direction, at least one end of the accommodating cavity is communicated with the outside, and the accommodating cavity comprises a first cavity and a second cavity which are communicated along the first direction; and

a gas flow heating apparatus according to any one of claims 1 to 9, mounted to the first chamber, the second chamber being for at least partial insertion of an aerosol-generating article, the gas flow heating apparatus being for heating the aerosol-generating article.

11. An aerosol-generating device according to claim 10,

the shell comprises an inner pipe portion and an outer pipe portion, the inner portion of the inner pipe portion is provided with the containing cavity, a cavity is enclosed between the inner pipe portion and the outer pipe portion, the cavity is in a negative pressure state, or the cavity is filled with inert gas, or the cavity is filled with low-thermal-conductivity media.

12. An aerosol-generating device according to claim 10,

the shell is a single-layer pipe, the accommodating cavity is formed in the single-layer pipe, and the heat conductivity of the single-layer pipe is smaller than that of the air guide assembly.

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