Heating assembly and aerosol generating device

Abstract

The utility model relates to the technical field of aerosol generation, and provides a heating assembly and an aerosol generation device.The heating assembly comprises a heating body, a containing cavity is formed in the heating body, and the containing cavity is configured to be capable of containing at least two aerosol matrixes of matrix sections with different axial positions; an insertion opening is formed in one end of the accommodating cavity and is used for inserting an aerosol substrate into the accommodating cavity; the heating body is provided with separation structures and at least three sections of heating structures, the at least three sections of heating structures are sequentially arranged in the axial direction of the containing cavity, the separation structure is arranged between every two adjacent sections of heating structures, and the separation structures are used for blocking heat transfer between the adjacent heating structures; every two adjacent sections of heating structures form a group of heating parts, and different heating parts are used for being correspondingly arranged with substrate sections of different aerosol substrates. The same aerosol generating device can be matched with various aerosol matrixes.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, specifically to a heating component and an aerosol generation device. Background Technology

[0002] An aerosol generating device is a device that heats and atomizes an aerosol matrix to generate aerosols. Aerosol generating devices typically use a heating tube to heat the aerosol matrix. The heating tube has a cylindrical heating chamber with an opening at one end. The aerosol matrix can be inserted into the heating tube through the opening, allowing the heating tube to heat the matrix segment of the aerosol matrix.

[0003] Currently, aerosol matrices can vary in type. Some aerosol matrices include more functional segments in addition to the matrix segment. This results in different positions of the matrix segments in different types of aerosol matrices. When different types of aerosol matrices are inserted into the heating tube, the position of the matrix segment relative to the heating structure on the heating tube is different. Some cannot correspond to the heating structure on the heating tube, resulting in poor heating effect. Therefore, usually one aerosol generating device can only be matched with one type of aerosol matrix, which is difficult to meet the user's need for one aerosol generating device to be matched with multiple aerosol matrices. Utility Model Content

[0004] This application provides a heating component and an aerosol generating device, which can solve the problem that the same aerosol generating device is difficult to match with various aerosol matrices.

[0005] To address the aforementioned technical problems, this application provides a heating assembly, which includes a heating body. The heating body has a receiving cavity configured to accommodate at least two aerosol substrate segments with different axial positions. One end of the receiving cavity has a socket for inserting the aerosol substrate into the receiving cavity.

[0006] The heating element has a partition structure and at least three heating structures. The at least three heating structures are arranged sequentially along the axial direction of the accommodating cavity, and a partition structure is provided between each pair of adjacent heating structures. The partition structure is used to block the heat transfer between adjacent heating structures. Each pair of adjacent heating structures constitutes a set of heating parts, and different heating parts are used to correspond to different aerosol matrix matrix segments.

[0007] In one embodiment, the heating element has at least a first heating structure, a second heating structure, and a third heating structure, which are arranged sequentially from the direction away from the socket to the direction closer to the socket.

[0008] The sum of the thermal resistances of all the partitions between the first and second heating structures is greater than the sum of the thermal resistances of all the partitions between the second and third heating structures.

[0009] In one embodiment, the number of partition structures between the first heating structure and the second heating structure is greater than the number of partition structures between the second heating structure and the third heating structure.

[0010] In one embodiment, the partition structure is a hole, a protrusion, or a groove.

[0011] In one embodiment, the heating element further includes a heat insulation element embedded within a partition structure.

[0012] In one embodiment, the heating assembly further includes a porous element having a plurality of heating channels penetrating the porous element; the porous element is installed at the end of the receiving cavity away from the insertion port; a first heating structure is disposed on the outer periphery of the porous element to heat the airflow in the heating channels into a hot airflow, the hot airflow being used to flow into the aerosol matrix and heat the aerosol matrix.

[0013] In one embodiment, the heating assembly further includes a first aerosol matrix and a second aerosol matrix. The first aerosol matrix includes a first matrix segment. When the first aerosol matrix is ​​inserted into the accommodating cavity, the first matrix segment abuts against the porous component. The first heating structure and the second heating structure are used to heat the first matrix segment.

[0014] The second aerosol matrix includes a second matrix segment and a porous segment. When the second aerosol matrix is ​​inserted into the accommodating cavity, the porous segment abuts against the porous component. The second matrix segment is connected to the end of the porous segment facing the insertion port. The second heating structure and the third heating structure are used to heat the second matrix segment.

[0015] In one embodiment, the heating element further includes a first electrode, a second electrode, a third electrode, and a fourth electrode. The first electrode and the second electrode are respectively connected to the two ends of the first heating structure, the third electrode and the fourth electrode are respectively connected to the two ends of the third heating structure, one end of the second heating structure is connected to the first electrode, and the other end of the second heating structure is connected to the third electrode.

[0016] To address the aforementioned technical problems, this application provides an aerosol generating device, which includes a support assembly and a heating assembly from any of the above embodiments, wherein the heating assembly is fixed to the support assembly.

[0017] In one embodiment, the bracket assembly includes a first bracket and a second bracket. The first bracket has a mounting cavity, and both the heating element and the second bracket are disposed in the mounting cavity. The second bracket supports the end of the heating element away from the socket, and the first bracket abuts against the end of the heating element near the socket. An air intake channel is formed between the cavity wall of the mounting cavity and the heating element, and the air intake channel communicates with the receiving cavity.

[0018] Because the heating element of this application has at least three heating structures arranged sequentially along the axial direction, each pair of adjacent heating structures can form a group of heating elements. Since different heating elements have different axial heights, they can correspond to matrix segments with different axial heights. When different aerosol matrices are inserted, each aerosol matrix can have a corresponding heating element to heat the matrix segment. Therefore, the same aerosol generating device can be matched with multiple aerosol matrices. Furthermore, by setting partition structures between the heating structures, heat transfer between them is prevented, thereby improving heating efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a heating assembly provided in one embodiment of this application;

[0020] Figure 2 A schematic diagram of the unfolded structure of a heating assembly provided in an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the structure of a first aerosol matrix provided in an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the structure of a second aerosol matrix provided in an embodiment of this application;

[0023] Figure 5 A cross-sectional view of a heating assembly provided in an embodiment of this application;

[0024] Figure 6 This is a cross-sectional view of an aerosol generating apparatus provided in an embodiment of this application;

[0025] Figure 7 A cross-sectional view of an aerosol generating apparatus provided in another embodiment of this application.

[0026] Reference numerals: heating element 10, accommodating cavity 11, insertion port 111, partition structure 12, heating structure 13, first heating structure 131, second heating structure 132, third heating structure 133, heating part 14, first heating part 141, second heating part 142, first electrode 15, second electrode 16, third electrode 17, fourth electrode 18, first aerosol matrix 20, first matrix section 21, first air passage section 22, first filter section 23, second aerosol matrix 30, second matrix section 31, porous section 32, second air passage section 33, second filter section 34, porous component 40, heating channel 41, support assembly 50, first support 51, mounting cavity 511, air inlet channel 512, second support 52. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0028] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0029] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0030] The terms "parallel" and "perpendicular," etc., are specific to the current technological level, not absolute mathematical definitions. Slight deviations are permissible; approximations of parallelism or perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, with the angle between A and B ranging from 0° to 10°. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, with the angle between A and B ranging from 80° to 100°. The directional terms used in the embodiments of this application, such as "upper," "inner," "outer," and "side," are merely for reference to the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0031] Please refer to Figure 1 and Figure 2This application provides a heating assembly. This heating assembly is applied to an aerosol generating device for heating an aerosol matrix into an aerosol. The heating assembly includes a heating body 10, and a receiving cavity 11 is provided within the heating body 10. Specifically, the heating body 10 has a tubular structure, with open ends along its axial direction. The internal space of the tubular structure is the receiving cavity 11. One end of the receiving cavity 11 has a socket 111 for inserting the aerosol matrix into the receiving cavity 11.

[0032] The accommodating cavity 11 is configured to accommodate at least two aerosol matrices, for example Figure 3 and Figure 4 Different types of aerosol matrices have matrix segments with different axial positions. Among these, some matrix segments are solid grass-like matrices, such as tobacco matrices. Tobacco matrices can generate aerosols when heated. The different axial positions of the matrix segments refer to the different heights of the matrix segments along the axial direction of the aerosol matrix, even when the bottom surface height is the same. Different types of aerosol matrices also have different functional segments; the addition of these functional segments leads to different axial positions of the matrix segments within the aerosol matrix.

[0033] For example, Figure 3 The aerosol matrix is ​​a first aerosol matrix 20, and the heating component may or may not include the first aerosol matrix 20. The first aerosol matrix 20 includes a first matrix segment 21. In addition, the first aerosol matrix 20 also includes a first airway segment 22 and a first filter segment 23. The first matrix segment 21, the first airway segment 22 and the first filter segment 23 are connected in sequence. That is, during suction, the user suctions the first filter segment 23. The first filter segment 23 is at the top of the first aerosol matrix 20, and the first matrix segment 21 is at the bottom of the first aerosol matrix 20.

[0034] For example, Figure 4 The aerosol matrix is ​​a second aerosol matrix 30, and the heating component may or may not include the second aerosol matrix 30. The second aerosol matrix 30 includes a second matrix segment 31 and a porous segment 32. In addition, the second aerosol matrix 30 also includes a second air passage segment 33 and a second filter segment 34. The porous segment 32, the second matrix segment 31, the second air passage segment 33 and the second filter segment 34 are connected in sequence. During suction, the user suctions the second filter segment 34. The second filter segment 34 is at the top of the second aerosol matrix 30, and the porous segment 32 is at the bottom of the second aerosol matrix 30.

[0035] Therefore, after the first aerosol matrix 20 and the second aerosol matrix 30 are respectively inserted into the accommodating cavity 11, when the axial height of the bottom surface of the first aerosol matrix 20 and the second aerosol matrix 30 is the same, the axial position of the first matrix segment 21 is further away from the insertion port 111 than the axial position of the second matrix segment 31.

[0036] like Figure 1 and Figure 2 As shown, the heating element 10 has a partition structure 12 and at least three heating structures 13. The at least three heating structures 13 are arranged sequentially along the axial direction of the accommodating cavity 11. Here, "sequential arrangement" means that in two adjacent heating structures 13, the top end of the heating structure 13 on the side closer to the insertion port 111 is higher than the top end of the heating structure 13 on the side farther from the insertion port 111, and the bottom end of the heating structure 13 on the side closer to the insertion port 111 is higher than the bottom end of the side farther from the insertion port 111.

[0037] In this configuration, the bottom of the heating structure 13 on the side closer to the socket 111 can be higher than the top of the heating structure 13 on the side farther from the socket 111. Alternatively, the bottom of the heating structure 13 on the side closer to the socket 111 can be flush with the top of the heating structure 13 on the side farther from the socket 111, or the bottom of the heating structure 13 on the side closer to the socket 111 can be lower than the top of the heating structure 13 on the side farther from the socket 111. In other words, a portion of the axial height of the adjacent heating structures 13 is the same.

[0038] A partition structure 12 is provided between each pair of adjacent heating structures 13. The partition structure 12 can be used to block the heat transfer between adjacent heating structures 13, so that the heat of each heating structure 13 is transferred to the radially inward aerosol matrix to a greater extent, and transferred to the axial direction of the heating body 10 to a lesser extent, so that the heat at the location of each heating structure 13 is more independent.

[0039] Each pair of adjacent heating structures 13 constitutes a group of heating elements 14, and different heating elements 14 are used to correspond to different aerosol matrix segments. The number of heating elements 14 is the same as the number of aerosol matrix types that the heating element 10 can match. The correspondence between the heating elements 14 and the matrix segments means that different heating elements 14 and different aerosol matrix segments are at the same axial height, and the heating elements 14 generally surround the outer periphery of their corresponding matrix segments.

[0040] Since the heating body 10 of this application has at least three heating structures 13 arranged sequentially along the axial direction, each pair of adjacent heating structures 13 can form a group of heating elements 14. Different heating elements 14 have different axial heights, thus corresponding to matrix segments with different axial heights. When different aerosol matrices are inserted, each aerosol matrix can have a corresponding heating element 14 to heat the matrix segment. Therefore, the same aerosol generating device can be matched with multiple aerosol matrices, resulting in good heating effects for matrix segments with different axial heights when different types of aerosol matrices are inserted. Furthermore, by providing a partition structure 12 between each heating structure 13, heat transfer between the heating structures 13 is prevented, thereby improving heating efficiency.

[0041] Furthermore, since each heating element 14 has two heating structures 13, when one heating element 14 heats the substrate segment, the upper and lower parts of the substrate segment can be heated by different heating powers by adjusting the heating power of the two heating structures 13, thereby satisfying more heating modes of the substrate segment.

[0042] In one embodiment, such as Figure 1 and Figure 2 As shown, the heating element 10 has at least a first heating structure 131, a second heating structure 132, and a third heating structure 133, which are arranged sequentially from the direction away from the socket 111 to the direction closer to the socket 111. The first heating structure 131 and the second heating structure 132 can form a first heating part 141, and the second heating structure 132 and the third heating structure 133 can form a second heating part 142. The first heating part 141 and the second heating part 142 are used to heat two different types of aerosol matrices (for example, to heat a first aerosol matrix 20 and a second aerosol matrix 30, respectively).

[0043] The sum of the thermal resistances of all the partition structures 12 between the first heating structure 131 and the second heating structure 132 is greater than the sum of the thermal resistances of all the partition structures 12 between the second heating structure 132 and the third heating structure 133. Thermal resistance reflects the ability of the partition structures 12 to prevent heat transfer. When the second heating element 142 is used to heat the aerosol, for example, when the second heating element 142 is used to heat the second aerosol matrix 30, the axial position of the matrix segment is relatively high. Below the matrix segment, there is also a functional segment, such as a porous segment 32. The porous segment 32 is generally made of fiber cotton. If the porous segment 32 is heated by excessive heat, it may damage the physical structure of the fiber cotton and may also produce some harmful gases or odors. Therefore, not only must the controller prevent the first heating structure 131 from heating, but the structure must also be designed with relatively high thermal resistance for the partition structures 12 between the first heating structure 131 and the second heating structure 132 to prevent damage to the physical structure of the porous segment 32 when the second heating element 142 heats the second aerosol matrix 30.

[0044] In one embodiment, such as Figure 1 and Figure 2As shown, the number of partition structures 12 between the first heating structure 131 and the second heating structure 132 is greater than the number of partition structures 12 between the second heating structure 132 and the third heating structure 133. In this embodiment, the thermal resistance of each partition structure 12 is the same or has a small difference. By increasing the number of partition structures 12 between the first heating structure 131 and the second heating structure 132, the total thermal resistance of all partition structures 12 between the first heating structure 131 and the second heating structure 132 can be increased. In addition to increasing the number, the type of partition structure 12 between the second heating structure 132 and the first heating structure 131 can be changed, and a type with a higher thermal resistance can be selected.

[0045] like Figure 2 As shown, there are multiple rows of partition structures 12 between the first heating structure 131 and the second heating structure 132, and one row of partition structures 12 between the second heating structure 132 and the third heating structure 133. In the multiple rows of partition structures 12 between the first heating structure 131 and the second heating structure 132, the partition structures 12 in each row can be staggered in the axial direction, which can further improve the thermal resistance of the multiple rows of partition structures 12.

[0046] In one embodiment, the partition structure 12 is a hole-shaped structure, a protrusion, a groove, etc. The heating body 10 may have only one type of partition structure 12 or multiple types of partition structures 12. In one embodiment, the heating body 10 may also include a heat insulation body (not shown), which is embedded in the partition structure 12. The heat insulation body is made of heat insulation material, thereby further improving the thermal resistance at the partition structure 12 on the heating body 10.

[0047] In one embodiment, such as Figure 5 As shown, the heating assembly also includes a porous element 40, which has multiple heating channels 41 extending through it. The porous element 40 is mounted on the end of the accommodating cavity 11 away from the insertion port 111. A first heating structure 131 is disposed on the outer periphery of the porous element 40 to heat the airflow within the heating channels 41 into a hot airflow, which flows into the aerosol matrix and heats the aerosol matrix. Preferably, the end of the first heating structure 131 away from the insertion port 111 surrounds the outer periphery of the porous element 40.

[0048] When the first aerosol matrix 20 is inserted into the accommodating cavity 11, the first matrix segment 21 abuts against the porous component 40. The end of the first heating structure 131 near the insertion port 111 and the second heating structure 132 surround the outer periphery of the first matrix segment 21 to heat the first matrix segment 21. The third heating structure 133 is controlled by a controller not to generate heat. During preheating, the power of the second heating structure 132 is controlled to be greater than that of the first heating structure 131, so that the upper part of the first matrix segment 21 can quickly generate aerosol, which is beneficial to generate more aerosol in the early stage. During the second half of heating, the power of the second heating structure 132 is controlled to be less than that of the first heating structure 131, so that the first matrix segment 21 is heated evenly mainly by hot airflow, while the second heating structure 132 has a certain amount of heat to ensure that the aerosol does not condense.

[0049] When the second aerosol matrix 30 is inserted into the accommodating cavity 11, the second matrix segment 31 is connected to the end of the porous segment 32 facing the insertion port 111. The porous segment 32 abuts against the porous component 40. The end of the first heating structure 131 near the insertion port 111 surrounds the outer periphery of the porous segment 32. The second heating structure 132 and the third heating structure 133 surround the outer periphery of the second matrix segment 31 to heat the second matrix segment 31. To prevent the porous segment 32 from overheating and damaging its physical structure, the first heating structure 131 needs to be controlled by a controller to prevent it from heating. During preheating, the power of the third heating structure 133 is controlled to be greater than that of the second heating structure 132, so that the upper part of the second matrix section 31 can quickly generate aerosols, which is beneficial to generate more aerosols in the early stage. In the second half of heating, the power of the third heating structure 133 is controlled to be less than that of the second heating structure 132, so that the lower part of the second matrix section 31 can further generate aerosols. The third heating structure 133 also has a certain amount of heat to ensure that the aerosols do not condense.

[0050] In one embodiment, such as Figure 2 As shown, the heating element 10 also has a first electrode 15, a second electrode 16, a third electrode 17, and a fourth electrode 18. The first electrode 15 and the second electrode 16 are respectively connected to both ends of the first heating structure 131, and the third electrode 17 and the fourth electrode 18 are respectively connected to both ends of the third heating structure 133. One end of the second heating structure 132 is connected to the first electrode 15, and the other end of the second heating structure 132 is connected to the third electrode 17. By sharing electrodes with the first heating structure 131 and the third heating structure 133, the number of electrodes can be reduced, the circuit structure can be simplified, the connection points and welding processes can be reduced, and the production complexity and failure rate can be lowered. In other embodiments, the second heating structure 132 may also have its own independent electrode.

[0051] like Figure 6 and Figure 7This application also provides an aerosol generating device, which includes a support assembly 50 and a heating assembly, the heating assembly being fixed to the support assembly 50. Furthermore, the aerosol generating device may also include components such as a housing, a power supply, a controller, and a microphone.

[0052] In one embodiment, the support assembly 50 includes a first support 51 and a second support 52. The first support 51 has a mounting cavity 511, and both the heating element 10 and the second support 52 are disposed within the mounting cavity 511. The second support 52 supports the end of the heating element 10 away from the socket 111, and the first support 51 abuts against the end of the heating element 10 near the socket 111. An air intake channel 512 is formed between the cavity wall of the mounting cavity 511 and the heating element 10, and the air intake channel 512 communicates with the receiving cavity 11. Both the first support 51 and the second support 52 have openings to allow the end of the air intake channel 512 near the socket 111 to communicate with the outside atmosphere, and the end of the air intake channel 512 away from the socket 111 communicates with the receiving cavity 11 through the second support 52. Therefore, the aerosol generating device can be equipped with air intake from the top, eliminating the need for an additional air duct connected to the bottom of the aerosol generating device, thus simplifying the structure of the aerosol generating device. Of course, in other embodiments, an air duct can also be provided to connect to the second support 52 to achieve bottom air intake of the aerosol generating device.

[0053] The first support 51 and the second support 52 can be made of high-temperature resistant, low-thermal-conductivity materials, such as polyetheretherketone (PEEK), to prevent heat from the heating element 10 from being transferred to the outside of the support assembly 50. The base material of the heating element 10 can be a metal or ceramic circumferential heating tube, and the heating structure is a thick-film printed heating structure on the heating tube. Of course, the heating element 10 can also be an infrared heating element, an electromagnetic induction heating element, or a heating tube wrapped with an electric heating film. The porous component 40 can be made of a high-thermal-conductivity material, such as aluminum or copper.

[0054] The above examples illustrate this application only to aid in understanding the invention and are not intended to limit the scope of the application. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the concept of this application.

Claims

1. A heating assembly, characterized by, The heating body is internally provided with a containing cavity configured to respectively accommodate at least two aerosol substrates with different axial positions; One end of the containing cavity is provided with a socket for inserting the aerosol substrate into the containing cavity; The heating body is provided with a partition structure and at least three heating structures, the at least three heating structures are sequentially arranged along the axial direction of the containing cavity, and the partition structure is arranged between each adjacent two heating structures to block heat transfer between the adjacent heating structures; each adjacent two heating structures form a heating unit, and different heating units are arranged corresponding to different substrate segments of the aerosol substrate. The heating body is provided with at least a first heating structure, a second heating structure and a third heating structure, which are sequentially arranged from the direction away from the socket to the direction close to the socket; 2. The heating assembly of claim 1, wherein, The total thermal resistance of all partition structures between the first heating structure and the second heating structure is greater than the total thermal resistance of all partition structures between the second heating structure and the third heating structure. The number of partition structures between the first heating structure and the second heating structure is greater than the number of partition structures between the second heating structure and the third heating structure.

3. The heating assembly of claim 2, wherein, The partition structure is a hole type, a protrusion or a groove.

4. The heating assembly of claim 2, wherein, The heating body further comprises a heat insulation body embedded in the partition structure.

5. The heating assembly of claim 2, wherein, Further comprising a porous member provided with a plurality of heating channels penetrating through the porous member; the porous member is installed at one end of the containing cavity away from the socket; the first heating structure is arranged on the outer periphery of the porous member to heat the airflow in the heating channel into a hot airflow, and the hot airflow is used to flow into the aerosol substrate and heat the aerosol substrate.

6. The heating assembly of any one of claims 2-5, wherein, Further comprising a first aerosol substrate and a second aerosol substrate, the first aerosol substrate comprises a first substrate segment, when the first aerosol substrate is inserted into the containing cavity, the first substrate segment abuts against the porous member, and the first heating structure and the second heating structure are used to heat the first substrate segment; 7. The heating assembly of claim 6, wherein, The second aerosol substrate comprises a second substrate segment and a porous segment, when the second aerosol substrate is inserted into the containing cavity, the porous segment abuts against the porous member, and one end of the second substrate segment and the porous segment are connected towards the socket; the second heating structure and the third heating structure are used to heat the second substrate segment. The heating body is further provided with a first electrode, a second electrode, a third electrode and a fourth electrode, the first electrode and the second electrode are respectively connected to two ends of the first heating structure, the third electrode and the fourth electrode are respectively connected to two ends of the third heating structure, one end of the second heating structure is connected to the first electrode, and the other end of the second heating structure is connected to the third electrode.

8. The heating assembly of any one of claims 2-5, wherein, The bracket assembly and the heating assembly as claimed in any one of claims 1-8 are fixed on the bracket assembly.

9. An aerosol generating device, characterized by, ​ 10. An aerosol generation device according to claim 9, wherein, The support assembly comprises a first support and a second support, the first support has a mounting cavity therein, the heating body and the second support are arranged in the mounting cavity, the second support supports the heating body away from one end of the socket, the first support abuts one end of the heating body close to the socket, a gas inlet channel is formed between a cavity wall of the mounting cavity and the heating body, and the gas inlet channel communicates with the accommodating cavity.

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