CN220109132U

CN220109132U - Aerosol generating device

Info

Publication number: CN220109132U
Application number: CN202320206629.6U
Authority: CN
Inventors: 张幸福; 李军; 宋稳亚; 黄秋强
Original assignee: Seymour International Holdings Ltd
Current assignee: Seymour International Holdings Ltd
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-12-01
Anticipated expiration: 2033-02-13

Abstract

The present utility model relates to an aerosol-generating device. The aerosol-generating device comprises: the shell assembly comprises a shell part, the shell part comprises a first shell and a second shell, the first shell is sleeved on the outer side of the second shell, a vacuum area is formed between the first shell and the second shell, a heating bin for accommodating aerosol-generating products is arranged on the inner side of the second shell, and the vacuum area surrounds at least part of the heating bin; wherein at least a portion of the circumferential outer surface of the first housing serves as an exterior surface of the aerosol-generating device; a heating assembly is positioned within the housing assembly for heating the aerosol-generating article inserted into the heating cartridge. The shell part with the vacuum zone is directly used as a part of the housing assembly, and at least a part of the circumferential outer surface of the first housing of the shell part is directly used as the appearance surface of the aerosol-generating device, so that the number of elements can be reduced while ensuring good heat insulation effect, and the overall size of the device can be reduced.

Description

Aerosol generating device

Technical Field

The utility model relates to the technical field of electronic atomization, in particular to an aerosol generating device.

Background

A Heat Not Burn (HNB) device is an aerosol-generating device for heating but Not Burning a substrate end of an aerosol-generating article (treated plant leaf article), which is capable of forming an aerosol desired by a user by heating the substrate end of the aerosol-generating article at a high temperature, but at a temperature insufficient to burn the substrate end of the aerosol-generating article.

The existing aerosol generating device is used for guaranteeing that the temperature of the outside of a shell assembly of the device is not too high, and parts used for heat insulation are independently arranged in the shell assembly, or a large gap is reserved between the shell assembly and a heating bin for heat insulation, so that the number of parts of the device is generally large, the cost is high, the size of the device is generally large, the carrying of a user is inconvenient, and the use experience of the user is affected.

Disclosure of Invention

In view of this, an embodiment of the present disclosure provides an aerosol-generating device comprising:

the shell assembly comprises a shell part, the shell part comprises a first shell and a second shell, the first shell is sleeved on the outer side of the second shell, a vacuum area is formed between the first shell and the second shell, a heating bin for accommodating aerosol-generating products is arranged on the inner side of the second shell, and the vacuum area surrounds at least part of the heating bin; wherein at least a portion of the circumferential outer surface of the first housing serves as an exterior surface of the aerosol-generating device;

a heating assembly is located within the housing assembly for heating the aerosol-generating article inserted into the heating cartridge.

In some embodiments, the first housing as a whole acts as an outer appearance of the aerosol-generating device.

In some embodiments, the first housing and the second housing are both cylindrical and arranged concentrically.

In some embodiments, the housing assembly further comprises an upper cover disposed on a top side of the sleeve portion and a base assembly disposed on a bottom side of the sleeve portion;

at least one end of the shell part along the length direction is provided with a connecting structure, and the connecting structure is used for being detachably connected with the upper cover and/or the base assembly.

In some embodiments, the connecting structure is disposed on an outer sidewall of the second housing, and a thickness of a portion where the connecting structure is disposed is greater than a thickness of a remaining portion of the second housing.

In some embodiments, the connection structure is an external thread structure.

In some embodiments, the heating assembly includes a cylindrical film carrier and a heating element disposed on the film carrier, an outer sidewall of the film carrier being spaced from an inner sidewall of the second housing, the inner sidewall of the film carrier defining the heating chamber.

In some embodiments, the inner sidewall of the second housing defines the heating compartment, and the heating assembly is disposed on the inner sidewall of the second housing.

In some embodiments, the aerosol-generating device comprises: a fixed bracket;

the fixed support extends into the second shell from the shell part, and the bottom side of the heating component is connected with the fixed support.

In some embodiments, the aerosol-generating device comprises a first sealing ring sealingly disposed at the interface of the bottom side of the heating assembly and the stationary support.

In some embodiments, the aerosol-generating device comprises: a first metal ring;

one end of the first metal ring along the axial direction is fastened to the periphery of the fixed support, and the other end of the first metal ring along the axial direction is fastened to the periphery of the first sealing ring and used for realizing sealing connection between the heating assembly and the fixed support.

In some embodiments, the first metal ring has a radial thickness of between 0.1mm and 0.3 mm.

In some embodiments, the upper cover includes: the first side wall and the second side wall are arranged on the outer side of the second side wall at intervals, and the top side of the first side wall is connected with the top side of the second side wall in a sealing mode; the connecting structure arranged on the top side of the shell part is connected with the inner side wall of the first side wall, and the top side of the heating component is connected with the second side wall.

In some embodiments, the aerosol-generating device comprises a second sealing ring;

the second sealing ring is arranged at the junction of the top side of the heating component and the second side wall in a sealing mode.

In some embodiments, the aerosol-generating device comprises: a second metal ring;

one end of the second metal ring along the axial direction is fastened on the periphery of the second side wall of the upper cover, and the other end of the first metal ring along the axial direction is fastened on the periphery of the second sealing ring, so that the sealing connection between the heating assembly and the upper cover is realized.

In some embodiments, the second metal ring has a radial thickness of between 0.1mm and 0.3 mm.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

the aerosol-generating device of the embodiments of the disclosure comprises a shell portion, the shell portion comprises a first shell and a second shell, the first shell is sleeved on the outer side of the second shell, a vacuum area is formed between the first shell and the second shell, a heating bin for accommodating a substrate end of an aerosol-generating product is arranged on the inner side of the second shell, the vacuum area surrounds the heating bin, and at least a part of the circumferential outer surface of the first shell serves as an appearance surface of the aerosol-generating device. Because the shell assembly is provided with the shell part with the vacuum area, and at least one part of the circumferential outer surface of the first shell of the shell part is directly used as the appearance surface of the aerosol generating device, the shell assembly can perform good heat insulation on heat generated by the heating bin without arranging parts for heat insulation in the shell assembly, so that the number of parts is reduced, and the production cost is reduced. In addition, need not to reserve too big space in order to insulate against heat between casing subassembly and the heating storehouse, can not have the space even to can guarantee good thermal-insulated effect, effectual reduction device's size, thereby be convenient for the user use and carry, improved user's use experience.

Drawings

Fig. 1 is a schematic diagram illustrating an aerosol-generating device according to an exemplary embodiment;

fig. 2 is a partial schematic cross-sectional view of the aerosol-generating device shown in fig. 1;

fig. 3 is a partial schematic cross-sectional view of an aerosol-generating article inserted into the aerosol-generating device shown in fig. 1;

fig. 4 is a partially schematic exploded view of the aerosol-generating device depicted in fig. 1;

fig. 5 is a partial schematic cross-sectional view of another aerosol-generating device according to an exemplary embodiment;

fig. 6 is a partial schematic cross-sectional view of an aerosol-generating article inserted into the aerosol-generating device shown in fig. 5;

fig. 7 is a partial schematic cross-sectional view of a sleeve portion of the aerosol-generating device illustrated in fig. 4.

Description of the reference numerals

1-a housing assembly; 11-a sleeve part; 11 a-a first housing; 11 b-a second housing; 11 c-vacuum zone; 12-an upper cover; 121-a first sidewall; 122-a second sidewall; 13-a base assembly; 2-a heating assembly; 21-a membrane carrier; 22-heating elements; 3-aerosol-generating article; 4, heating the bin; a 5-linkage structure; 6-fixing a bracket; 61-a protrusion; 7 a-a first seal ring; 7 b-a first metal ring; 8 a-a second seal ring; 8 b-a second metal ring; 100-aerosol generating device.

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Also, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and the terms "a" and "an" are used individually. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

As shown in fig. 1, an embodiment of the present disclosure provides an aerosol-generating device 100.

The aerosol-generating device 100 is for heating a substrate end of an aerosol-generating article 3 to generate an aerosol for inhalation by a user. The aerosol-generating article 3 contains aerosol-generating material at its matrix end, which includes, but is not limited to, pharmaceutical products, nicotine-containing materials, nicotine-free materials, etc., and the matrix end may be, for example, solid materials composed of plants (e.g., tobacco, etc.) as the main raw material and added with corresponding aerosol-forming agents and aroma materials. Of course, the aerosol-generating substrate is not limited to a solid material, but may in some other embodiments be a liquid material, or may be both a solid material and a liquid material.

In embodiments of the present disclosure, the aerosol-generating article is generally cylindrical. In some other embodiments, the aerosol-generating article may also take any other suitable shape.

The aerosol-generating device comprises a housing assembly 1.

The housing assembly 1 is an outer protective housing of an aerosol-generating device, inside which a receiving cavity is formed for receiving various functional devices that perform the function of the aerosol-generating device. The housing assembly 1 has an opening formed therein through which the aerosol-generating article 3 enters the housing assembly 1 and the substrate end of the aerosol-generating article 3 is heated within the housing assembly 1 to obtain an aerosol as desired by the user.

In the disclosed embodiment, the housing assembly 1 is generally in the shape of an elongated cylinder, which is simple in construction, easy to machine, and at the same time convenient to hold by a user in use. In some other embodiments, the housing assembly 1 may also be in any other suitable shape, such as a polyhedral shape, an elliptical cylinder shape, or a cuboid shape.

It should be understood by those skilled in the art that the shape, material, size and manufacturing process of the housing assembly 1 are not particularly limited, and can meet the actual use requirements.

As shown in fig. 1 to 3, 5 and 6, the housing assembly 1 includes a shell portion 11.

As shown in fig. 2 and 5, the shell portion 11 includes a first housing 11a and a second housing 11b, the first housing 11a is sleeved outside the second housing 11b, a vacuum region 11c is formed between the first housing 11a and the second housing 11b, a heating chamber 4 for accommodating the aerosol-generating article 3 is provided inside the second housing 11b, the vacuum region 11c surrounds at least part of the heating chamber 4, and at least a part of the circumferential outer surface of the first housing 11a serves as an exterior surface of the aerosol-generating device.

In the presently disclosed embodiments, the term "look surface" refers to the outermost surface of the aerosol-generating device, i.e. the surface that is touched by a user when holding the device.

When the aerosol-generating device is in an operating state, heat is generated in the heating chamber 4 to heat the aerosol-generating article 3 contained therein, and therefore, it is necessary to thermally insulate the heating chamber 4. If the heat insulation effect is not good, heat may be transferred to the outside of the housing assembly 1 (i.e., at the exterior surface of the device), and thus may cause scalding to the user.

In order to guarantee the heat insulation effect of the device, the existing aerosol generating device usually leaves a larger gap between the shell component and the heating bin, and the size of the whole device is increased, so that the device is inconvenient for a user to carry, and the use experience of the user is affected. Or, can set up extra spare part that is used for thermal-insulated at the inside spare part that sets up of casing subassembly, this spare part quantity that can increase the device improves the assembly degree of difficulty, increases manufacturing cost.

Thus, in the embodiment of the present disclosure, the housing assembly 1 is provided with the shell portion 11, the shell portion 11 is formed with the vacuum region 11c, and the vacuum region 11c surrounds at least part of the heating chamber 4, so that the vacuum region 11c can transmit as little heat generated in the heating chamber 4 as possible to the first housing 11a of the shell portion 11 (i.e., the exterior surface of the aerosol-generating device), thereby achieving a good heat insulation effect. Because the shell part 11 for heat insulation is a part of the shell component 1, that is, the shell component 1 can perform good heat insulation on heat generated by the heating bin 4, the shell component 1 is not required to be additionally provided with parts for heat insulation in the shell component 1, meanwhile, an oversized gap is not required to be reserved between the shell component 1 and the heating bin 4 for heat insulation, and even no gap exists, so that the quantity of parts can be reduced while good heat insulation effect is ensured, the assembly difficulty and the production cost are reduced, and meanwhile, the size of the device is effectively reduced, so that the use and the carrying of a user are facilitated, and the use experience of the user is improved.

It will be appreciated by those skilled in the art that in some embodiments, the vacuum region 11c of the shell portion 11 may also completely surround the heating cartridge 4.

The distance between the first housing 11a and the second housing 11b (i.e. the width of the vacuum zone 11 c) is between 1mm and 3mm, preferably between 1.5mm and 2mm, in a direction perpendicular to the insertion of the aerosol-generating article 3 into the heating cartridge 4.

Illustratively, the separation distance between the first housing 11a and the second housing 11b may be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, or the like.

In addition, the shell portion 11 of the embodiment of the present disclosure is generally made of an insulating material resistant to high temperature, such as quartz glass, ceramic, or mica, so that the possibility of occurrence of short circuit can be reduced, and a certain heat insulation effect can be achieved. Of course, the housing portion 11 may be made of any other suitable material.

Illustratively, the first housing 11a and the second housing 11b of the shell part 11 may be connected and fixed in a vacuum environment by vacuum welding, thereby forming a vacuum region 11c for heat insulation, and at the same time, the vacuum welding may simplify an assembling process between the first housing 11a and the second housing 11 b.

It will be appreciated by those skilled in the art that the vacuum zone 11c of the shell portion 11 for insulation may also be formed in any other suitable manner.

The aerosol-generating device further comprises a heating assembly 2, the heating assembly 2 being located within the housing assembly 1 for heating the aerosol-generating article 3 inserted into the heating cartridge 4.

The heating temperature of the heating element 2 on the substrate end is typically between 250 ℃ and 350 ℃, so that the heating of the non-combustible aerosol-generating article 3 can substantially reduce the harm of harmful substances in the substrate end to a user while preserving the taste, and the release amount of harmful substances in the substrate end is reduced due to the fact that the high-temperature combustion cracking process does not occur, thereby reducing the harm, compared with the common combustion.

As shown in fig. 1 to 6, in the embodiment of the present disclosure, the first housing 11a as a whole is an exterior piece of the aerosol-generating device, that is, the circumferential outer surface of the first housing 11a is entirely an exterior surface of the aerosol-generating device. In some other embodiments, the first housing 11a may also have only a part of the circumferential outer surface as the exterior surface of the aerosol-generating device.

As shown in fig. 2, 3, 5 and 6, the first housing 11a and the second housing 11b of the jacket portion 11 are each cylindrical, and the heating chamber 4 is located at the center of the jacket portion 11. The first shell 11a and the second shell 11b are concentrically arranged, so that the vacuum area 1c can be uniformly distributed around the heating bin 4, and heat emitted by the heating bin 4 can be uniformly and fully isolated, and a better heat insulation effect is achieved.

In some other embodiments, the heating chamber 4 may not be located at the center of the shell portion 11, and in this case, the first housing 11a and the second housing 11b may also be arranged eccentrically, and the closer to the portion of the heating chamber 4 in the radial direction of the shell portion 11, the greater the distance between the first housing 11a and the second housing 11b, that is, the more space is occupied by the vacuum region 11c, and the farther from the portion of the heating chamber 4, the smaller the distance between the first housing 11a and the second housing 11b, that is, the less space is occupied by the vacuum region 11c. Therefore, the heat insulation can be effectively performed on the part with large heating value, and the overall size of the device is reduced while the heat insulation effect is ensured.

The housing assembly 1 further includes an upper cover 12 provided on the top side of the shell portion 11, and a base assembly 13 provided on the bottom side of the shell portion 12.

At least one end of the shell portion 11 in the length direction is provided with a connection structure 5, and the connection structure 5 is used for detachably connecting with the upper cover 12 and/or the base assembly 13. Because the shell portion 11 is provided with the connection structure 5, the shell portion can be directly connected with other parts of the shell assembly 1, and can be directly formed into a part of the shell assembly 1 without adding other parts, so that assembly can be reduced, errors generated in the assembly process can be reduced, the number of parts can be reduced, and production cost can be reduced.

In addition, the detachable connection can facilitate cleaning, replacement, and maintenance of the parts such as the heating chamber 4 in the subsequent housing part 11.

In the embodiment of the present disclosure, the cover part 11 is located between the upper cover 12 and the base assembly 13, and thus, both the top and bottom sides of the cover part 11 are provided with the connection structure 5 so as to be connected with the upper cover 12 and the base assembly 13. In some other embodiments, the connecting structure 5 may be provided only at one end of the housing portion 11 according to actual situations and different connection relations.

In the embodiment of the present disclosure, the connection structure 5 is disposed on the outer sidewall of the second housing 11b, and the thickness of the portion where the connection structure 5 is located is greater than the thickness of the remaining portion of the second housing 11 b.

Here, since the connection structure 5 is provided on the outer side wall of the second housing 11b, the thickness of the portion where the connection structure 5 is located means the sum of the thickness of the connection structure 5 itself and the thickness of the second housing 11 b.

In the embodiment of the present disclosure, the connection structure 5 is an external thread structure.

As shown in fig. 4, both ends of the case portion 11 in the length direction are provided with external screw structures, and the upper cover 12 and the base assembly 13 are provided with internal screw structures, the external screw structures being opposite to the screw directions of the internal screw structures, so that the case portion 11 is detachably connected with the upper cover 12 and the base assembly 13 in a screw connection manner.

In some other embodiments, the connection structure 5 may be other connection structures such as a buckle. However, the wall thickness of the housing portion 11 with the vacuum area 11c is generally thinner, and the connection structure 5 and the housing portion 11 where the connection structure 5 is located may be damaged by snap-fit or some other fixed connection method, thereby reducing the reliability of the device, and at the same time, increasing the complexity of the device, which is disadvantageous for assembly. The screw structure is simple, the reliability is good, and the size of the device is not increased basically, so that the connection structure 5 arranged at the end of the sleeve part 11 is preferably an external screw structure in consideration of the reliability, the size and other factors.

Illustratively, as shown in fig. 4, in some embodiments, the heating assembly 2 includes a cylindrical film carrier 21 and heating elements 22 disposed on the film carrier 21, the inner side walls of the film carrier 21 defining the heating chamber 4, the heating elements 22 being uniformly disposed on the outer side walls of the film carrier 21 along the circumferential direction of the film carrier 21, so that the substrate end of the aerosol-generating article 3 inserted into the heating chamber 4 can be uniformly heated, and the possibility of uneven heating of the substrate end of the aerosol-generating article 3 is reduced.

In the presently disclosed embodiment, the heating element 22 is a heat generating film that generates heat when energized, thereby heating the substrate end of the aerosol-generating article 3 inserted into the heating cartridge 4. The heat generating film may be, for example, a metal heat generating film, a conductive ceramic heat generating film, a conductive carbon heat generating film, or the like. The shape of the heating film may be a continuous film shape, a porous net shape, a strip shape, or the like. The embodiments of the present disclosure are not particularly limited in terms of materials and shapes.

In some other embodiments, the heating element 22 may also be any other suitable heating element.

The outer side wall of the film carrier 21 is spaced from the inner side wall of the second housing 11b, and wires are provided in the spaced region, through which the heating element 22 is connected to a power supply assembly (not shown) of the aerosol-generating device, so as to supply power to the heating element 22. The spacer region may also be filled with aerogel or other insulating medium to further enhance the insulating properties of the device.

As illustrated in fig. 5 to 7, in some embodiments, the inner sidewall of the second housing 11b of the shell portion 11 may further directly define the heating chamber 4, that is, the sidewall of the heating chamber 4 is directly formed with the vacuum region 11c for heat insulation, so that the number of parts can be reduced, and the production cost can be saved.

As shown in fig. 7, in the case where the inner side wall of the second housing 11b directly defines the heating chamber 4, the heating assembly 2 may be directly provided on the inner side wall of the second housing 11b for heating the aerosol-generating article 3 inserted into the heating chamber 4.

As shown in fig. 2 and 3, in the embodiment of the present disclosure, the upper cover 12 includes a first sidewall 121 and a second sidewall 122, the first sidewall 121 is spaced apart from the second sidewall 122 at an outer side, and a top side of the first sidewall 121 is inclined toward a top side direction of the second sidewall 122 and is sealingly connected with the top side of the second sidewall 122. The upper cover 12 is formed with an opening for insertion of the aerosol-generating article 3.

The connection structure 5 provided at the top side of the case portion 11 is connected to the inner sidewall of the first sidewall 121 of the upper cover 12, and the top side of the heating assembly 2 is connected to the second sidewall 122 of the upper cover 12. In the presently disclosed embodiment, it is the top side of the film carrier 21 of the heating assembly 2 that is connected to the second side wall 122 of the upper cover 12.

In some embodiments, the inner sidewall of the second sidewall 122 may be formed with a plurality of protruding structures, and the plurality of protruding structures may be arranged at intervals along the circumference of the inner sidewall of the second sidewall 122, for clamping and fixing the aerosol-generating article 3, so as to reduce the possibility of shaking or dropping the aerosol-generating article 3, and improve the reliability of the device.

As shown in fig. 2 to 4, the aerosol-generating device comprises a fixing bracket 6, the fixing bracket 6 extending from the housing portion 11 into the second housing 11b, and the bottom side of the heating assembly 2 being connected to the fixing bracket 6. In the disclosed embodiment, it is the bottom side of the membrane carrier 21 of the heating assembly 2 that is connected to the fixing support 6, and the membrane carrier 21 and the fixing support 6 together define the heating chamber 4, wherein the membrane carrier 21 defines the side walls of the heating chamber 4 and the fixing support 6 defines the bottom wall of the heating chamber 4, the fixing support 6 being for supporting the substrate end of the aerosol-generating article 3.

A plurality of protrusions 61 are formed on the bottom wall of the heating chamber 4, the plurality of protrusions 61 being adapted to contact the bottom end portion of the substrate end of the aerosol-generating article 3 such that a void for gas flow is formed between the substrate end of the aerosol-generating article 3 and the bottom wall of the heating chamber 4.

As shown in fig. 2 to 4, the aerosol-generating device comprises a first sealing ring 7a, a first metal ring 7b, a second sealing ring 8a and a second metal ring 8b. The first sealing ring 7a is sealed at the junction between the bottom side of the film carrier 21 of the heating assembly 2 and the fixing bracket 6, and the second sealing ring 8a is sealed at the junction between the top side of the film carrier 21 of the heating assembly 2 and the second side wall 122 of the upper cover 12.

One end of the first metal ring 7b along the axial direction is fastened to the outer periphery of the fixed support 6, and the other end of the first metal ring 7b along the axial direction is fastened to the outer periphery of the first sealing ring 7b, so that the bottom side of the membrane carrier 21 of the heating assembly 2 and the fixed support 6 are in sealing connection through extrusion of the first metal ring 7b to the first sealing ring 7 a.

One end of the second metal ring 8b along the axial direction is fastened to the outer periphery of the second side wall 122 of the upper cover 12, and the other end of the second metal ring 8b along the axial direction is fastened to the outer periphery of the second sealing ring 8a, so that the film carrier 21 of the heating assembly 2 and the upper cover 12 are in sealing connection through the extrusion of the second metal ring 8b to the second sealing ring 8 a.

The first sealing ring 7a and the second sealing ring 8a may be, for example, silicone rings, which have a relatively low hardness and good high temperature resistance. As such, when the first metal ring 7b is fastened to the outer circumference of the first sealing ring 7a, the first sealing ring 7a may be slightly deformed and closely fitted at the interface of the bottom side of the membrane carrier 21 and the fixing bracket 6, and when the second metal ring 8b is fastened to the outer circumference of the second sealing ring 8a, the second sealing ring 8a may be also slightly deformed and closely fitted at the interface of the top side of the membrane carrier 21 and the second sidewall 122. In this way, the gaps at the junction of the bottom side of the film carrier 21 and the fixed bracket and the junction of the top side of the film carrier 21 and the second side wall 122 are reduced, the possibility of heat escape is reduced, and a good sealing and heat insulation effect is further achieved.

The first metal ring 7b and the second metal ring 8b are both made of a metal material, and the metal ring made of a metal material can have a thinner thickness in the radial direction thereof than a plastic member made of a plastic material, and thus, it is advantageous to reduce the size of the device. In the presently disclosed embodiment, the first metal ring 7b has a radial thickness of between 0.1mm and 0.3mm, and the second metal ring 8b has a radial thickness of between 0.1mm and 0.3 mm.

Illustratively, the thickness of the first metal ring 7b in the radial direction may be 0.1mm, 0.2mm, 0.3mm, or the like. The thickness of the second metal 8b in the radial direction may be 0.1mm, 0.2mm, 0.3mm, or the like.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. Within the scope of the technical idea of the utility model, a number of simple variants of the technical solution of the utility model are possible, including combinations of individual specific technical features in any suitable way. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.

Claims

1. An aerosol-generating device, characterized in that the aerosol-generating device comprises:

2. An aerosol-generating device according to claim 1, wherein the first housing as a whole acts as an outer appearance of the aerosol-generating device.

3. An aerosol-generating device according to claim 1, wherein,

the first shell and the second shell are cylindrical and are concentrically arranged.

4. An aerosol-generating device according to claim 1, wherein,

the shell assembly further comprises an upper cover arranged on the top side of the shell part and a base assembly arranged on the bottom side of the shell part;

5. An aerosol-generating device according to claim 4, wherein the connection structure is provided on an outer side wall of the second housing and the connection structure is provided at a location having a thickness greater than a thickness of a remaining portion of the second housing.

6. An aerosol-generating device according to claim 4 or 5, wherein the connection structure is an external thread structure.

7. An aerosol-generating device according to claim 1, wherein the heating assembly comprises a cylindrical membrane carrier and a heating element disposed on the membrane carrier, an outer sidewall of the membrane carrier being spaced from an inner sidewall of the second housing, the inner sidewall of the membrane carrier defining the heating chamber.

8. An aerosol-generating device according to claim 1, wherein the inner side wall of the second housing defines the heating chamber, the heating assembly being disposed on the inner side wall of the second housing.

9. An aerosol-generating device according to claim 1, characterized in that the aerosol-generating device comprises: a fixed bracket;

10. An aerosol-generating device according to claim 9, comprising a first sealing ring sealingly arranged at the junction of the bottom side of the heating assembly and the stationary support.

11. An aerosol-generating device according to claim 10, wherein the aerosol-generating device comprises: a first metal ring;

12. An aerosol-generating device according to claim 11, wherein the first metal ring has a radial thickness of between 0.1mm and 0.3 mm.

13. An aerosol-generating device according to claim 4, wherein the upper cover comprises: the first side wall and the second side wall are arranged on the outer side of the second side wall at intervals, and the top side of the first side wall is connected with the top side of the second side wall in a sealing mode; the connecting structure arranged on the top side of the shell part is connected with the inner side wall of the first side wall, and the top side of the heating component is connected with the second side wall.

14. An aerosol-generating device according to claim 13, wherein the aerosol-generating device comprises a second sealing ring;

15. An aerosol-generating device according to claim 14, wherein the aerosol-generating device comprises: a second metal ring;

one end of the second metal ring along the axial direction is fastened on the periphery of the second side wall of the upper cover, and the other end of the second metal ring along the axial direction is fastened on the periphery of the second sealing ring, so that the sealing connection between the heating assembly and the upper cover is realized.

16. An aerosol-generating device according to claim 15, wherein the second metal ring has a radial thickness of between 0.1mm and 0.3 mm.