Heating assembly and aerosol generating device
By combining radiant heating with hot airflow, the problem of uneven heating of the aerosol matrix is solved, achieving uniform heating and improving the smoking experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG QISITECH CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-10
Smart Images
Figure CN224474066U_ABST
Abstract
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 used to heat an aerosol matrix to generate aerosols. Typically, aerosol generating devices use resistance heating to heat the aerosol matrix, transferring heat through thermal conduction. However, this conduction method can lead to uneven heating of the aerosol matrix, causing parts of the aerosol matrix in contact with the heating element to easily burn. For example, when the heating element surrounds the outermost layer of the aerosol matrix, the paper covering the element can easily burn, resulting in impurities and a poor aerosol suction experience. Utility Model Content
[0003] This application provides a heating component and an aerosol generating device, which can solve the problem of uneven heating of the aerosol matrix, which easily leads to poor sucking experience.
[0004] To address the aforementioned technical problems, this application provides a heating assembly comprising a support assembly, a light-emitting element, and a heat exchanger. The support assembly has a communicating receiving cavity and an airflow channel, the receiving cavity being used to contain an aerosol matrix; at least a portion of the light-emitting element is disposed within the airflow channel, the light-emitting element emitting light to radiate and heat the aerosol matrix; the heat exchanger is disposed within the airflow channel and surrounds the light-emitting element, the light-emitting element heating the heat exchanger, and the heat exchanger exchanging heat with the airflow entering the airflow channel to generate a hot airflow that heats the aerosol matrix.
[0005] In one embodiment, the heat exchanger has a mounting hole, a portion of the light-emitting element is disposed in the mounting hole and fits against the hole wall, and another portion of the light-emitting element is located outside the mounting hole and on the side of the mounting hole facing the receiving cavity.
[0006] In one embodiment, the airflow channel has an air inlet and an air outlet arranged opposite to each other, and the air outlet is connected to the receiving cavity; the heat exchanger is provided with a plurality of heat exchange channels, one end of the heat exchange channel faces the air inlet and is connected to the air inlet, and the other end of the heat exchange channel faces the air outlet and is connected to the air outlet.
[0007] In one embodiment, the heat exchanger includes a plurality of fins arranged at intervals around each other, the plurality of fins surrounding the light-emitting element, and a heat exchange channel is formed between two adjacent fins; or, the heat exchange channel is a perforated structure.
[0008] In one embodiment, the circumferential dimension of the heat exchange channel near the light-emitting element is smaller than the circumferential dimension of the heat exchange channel away from the light-emitting element.
[0009] In one embodiment, the light-emitting element includes a light-emitting body and a light-transmitting outer cover. The light-emitting body is disposed inside the outer cover, and the outer cover is in contact with a heat exchange element. The heat exchange element is configured to have a thermal conductivity greater than or equal to 120 W / (m·K).
[0010] In one embodiment, the light-emitting element has a fixed end and a free end. The fixed end is fixed to the support assembly, and the free end is spaced apart from the inner wall of the airflow channel and the receiving cavity. The heat exchange element is arranged around the free end and spaced apart from the inner wall of the airflow channel.
[0011] In one embodiment, the support assembly includes a reflector having a receiving cavity and an airflow channel within it; the reflector is used to reflect light emitted by the light-emitting element to the aerosol matrix; the reflector is configured to have a reflectivity greater than or equal to 90%;
[0012] Alternatively, the bracket assembly includes a mounting component with a receiving cavity and an airflow channel inside. The inner walls of the receiving cavity and the inner walls of the airflow channel are provided with reflective layers, which are configured to have a reflectivity of ≥90%.
[0013] In one embodiment, the support assembly includes an annular sidewall, within which a support portion is provided. One end of the support portion along the axial direction of the annular sidewall forms a receiving cavity with the annular sidewall, and the other end of the support portion along the axial direction of the annular sidewall forms an airflow channel with the annular sidewall. The support portion is used to support the bottom surface of the aerosol matrix.
[0014] To address the aforementioned technical problems, this application provides an aerosol generating device, which includes the heating component mentioned in any of the above claims.
[0015] The heating component of this application employs two heating methods to heat the aerosol matrix: one is radiative heating of the aerosol matrix using a light-emitting element, and the other is heating the airflow entering the airflow channel using a light-emitting element to generate a hot airflow. This hot airflow can enter the aerosol matrix to heat it. Light radiation has strong penetrability and does not require direct contact with the aerosol matrix; light can penetrate the outer layer of the aerosol matrix and uniformly heat the inner layer, resulting in more uniform heating of the entire aerosol matrix and preventing localized burning that leads to poor suction. The hot airflow can penetrate the gaps in the aerosol matrix and enter the interior, heating the aerosol matrix from the inside, further improving heating uniformity. The hot airflow can reach areas that are difficult to heat directly, thereby reducing incomplete vaporization or overheating. Furthermore, since light radiation heating and hot airflow heating act on different parts of the aerosol matrix respectively, they form a complementary spatial distribution and a temperature buffer over time, thus reducing the problem of sudden temperature rises and falls in certain areas. This gentle and uniform heating process facilitates the full vaporization of the active ingredients in the aerosol matrix, avoiding the generation of impurities due to high-temperature charring. In summary, the heating component provided in this application, through a combination of light radiation heating and hot airflow heating, improves the heating uniformity of the aerosol matrix, effectively reduces the risk of local overheating and impurity generation, and thus significantly improves the taste during aerosol inhalation. Attached Figure Description
[0016] Figure 1 A schematic diagram of the structure of an aerosol generating device and an aerosol matrix provided in an embodiment of this application;
[0017] Figure 2 A cross-sectional view of an aerosol generating apparatus and an aerosol matrix provided in an embodiment of this application;
[0018] Figure 3 A cross-sectional view of a heating assembly provided in an embodiment of this application;
[0019] Figure 4 A cross-sectional view of a heating assembly and an aerosol matrix provided in an embodiment of this application;
[0020] Figure 5 A schematic diagram of the structure of a reflector, a light-emitting element, and a heat exchanger provided in an embodiment of this application;
[0021] Figure 6 This is a schematic diagram of the structure of a heat exchanger provided in an embodiment of this application.
[0022] Reference numerals: heating component 10, support component 11, receiving cavity 111, socket 1111, airflow channel 112, air inlet 1121, air outlet 1122, reflector 113, annular sidewall 1131, support part 1132, air inlet channel 114, light-emitting component 12, fixed end 121, free end 122, heat exchange component 13, mounting part 131, mounting hole 1311, heat exchange channel 132, fin 133, outer shell 20, power supply 30, aerosol matrix 40. Detailed Implementation
[0023] 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.
[0024] 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.
[0025] 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).
[0026] 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.
[0027] Please refer to Figure 1 and Figure 2 This application provides an aerosol generating device, which includes a heating element 10. Furthermore, the aerosol generating device may also include components such as a housing 20, a power supply 30, and a controller. The housing 20 has a mounting cavity, in which the heating element 10, the power supply 30, and the controller are all mounted. The power supply 30 supplies power to the heating element 10, and the controller controls the heating of the heating element 10.
[0028] like Figure 3-5 As shown, the heating assembly 10 includes a support assembly 11, a light-emitting element 12, and a heat exchanger 13. The support assembly 11 has a connected receiving cavity 111 and an airflow channel 112. The receiving cavity 111 is used to contain the aerosol matrix 40. Specifically, one end of the receiving cavity 111 has a socket 1111, and the end of the receiving cavity 111 away from the socket 1111 is connected to the airflow channel 112. The socket 1111 is used for the aerosol matrix 40 to be inserted into and removed from the receiving cavity 111, and the airflow channel 112 is used to communicate with the outside atmosphere, allowing outside airflow to enter the airflow channel 112 and then enter the receiving cavity 111 via the airflow channel 112.
[0029] The aerosol matrix 40 includes at least a matrix segment, which is used to generate aerosols upon heating. In one embodiment, the aerosol matrix 40 further includes an encapsulation layer surrounding the matrix segment. The matrix segment is primarily composed of tobacco, herbal or plant leaves, or medicinal materials. It is understood that the materials forming the matrix segment are not limited; the matrix segment can be formed from a single material or from a mixture of multiple materials in different proportions.
[0030] The coating layer can be formed of a coating material such as paper, thereby maintaining the shape of the matrix segment. The material forming the coating layer is not limited to this; in other embodiments, the coating layer can also be formed of other materials such as aluminum foil to meet different requirements. In one embodiment, the aerosol matrix 40 further includes a nozzle segment, a cooling segment, and a sealing segment, which are arranged sequentially along the axis of the matrix segment. The nozzle segment mainly has a filtering function, through which the user inhales the aerosol. The nozzle segment may contain a filter medium that can filter tar, suspended particles, etc., in the aerosol, thereby reducing unwanted substances in the aerosol inhaled by the user. The filter medium can be, for example, a polylactic acid filament tow or a cellulose acetate filament tow. The main function of the cooling segment is to reduce the temperature of the aerosol to prevent burns to the mouth. The cooling segment has a cooling channel, and the inner wall of the cooling channel has cooling holes communicating with the outside of the cooling segment. The sealing section is located at the end of the aerosol matrix 40 and serves as a physical support base to prevent particles or materials of the aerosol matrix 40 from loosening or falling off during heating, maintaining the integrity of the aerosol matrix 40 and avoiding leakage due to thermal expansion or movement of the matrix section, which would affect the user experience. Furthermore, if condensate is generated in the cooling section or matrix section, the fiber structure of the sealing section can prevent the liquid from flowing out of the aerosol matrix 40. In addition, the sealing section can control airflow resistance through fiber density to ensure smooth suction. The sealing section can be made of materials such as polypropylene fiber, polyester fiber, cotton, or cellulose acetate. In other embodiments, the aerosol matrix 40 may not have at least one of the cooling section, sealing section, or nozzle section, or it may have other functional sections, which will not be elaborated here.
[0031] At least a portion of the light-emitting element 12 is disposed within the airflow channel 112. The light-emitting element 12 emits light, which is used to radiate and heat the aerosol matrix 40. Specifically, when the light emitted by the light-emitting element 12 heats the aerosol matrix 40, the heating temperature must reach the baking temperature of the aerosol matrix 40 without overheating; preferably, the heating temperature does not exceed 600 degrees Celsius. Thus, the wavelength of the light emitted by the light-emitting element 12 can be determined. Preferably, the light emitted by the light-emitting element 12 is infrared light, with a wavelength range preferably between 3.5 micrometers and 12 micrometers.
[0032] The heat exchanger 13 is disposed within the airflow channel 112 and surrounds the light-emitting element 12. The light-emitting element 12 is used to heat the heat exchanger 13, and the heat exchanger 13 is used to exchange heat with the airflow entering the airflow channel 112 to generate a hot airflow. The hot airflow can flow from the airflow channel 112 to the receiving cavity 111 and enter the interior of the aerosol matrix 40 to heat the aerosol matrix 40. Since air has extremely low thermal conductivity, without the heat exchanger 13, the light-emitting element 12 cannot directly and efficiently heat the air. The heat exchanger 13 is usually made of a material with high thermal conductivity, and the light-emitting element 12 can quickly transfer heat to the heat exchanger 13. Moreover, the heat exchanger 13 usually has a larger heat exchange area than the light-emitting element 12. The heat exchanger 13 exchanges heat with the airflow, which can improve the heating efficiency of the air.
[0033] The heating component 10 of this application employs two heating methods to heat the aerosol matrix 40: one is radiative heating of the aerosol matrix 40 using the light-emitting element 12, and the other is heating of the airflow entering the airflow channel 112 using the light-emitting element 12 to generate a hot airflow. This hot airflow can enter the aerosol matrix 40 to heat it. Light radiation has strong penetrability and does not require direct contact with the aerosol matrix 40. Light can penetrate the outer layer of the aerosol matrix 40 and uniformly heat the inner layer, resulting in more uniform heating of the entire aerosol matrix 40 and preventing localized burning that leads to poor suction. The hot airflow can penetrate the gaps in the aerosol matrix 40 and enter the interior, heating the aerosol matrix 40 from the inside, further improving heating uniformity. The hot airflow can reach areas that are difficult to heat directly, thereby reducing incomplete vaporization or overheating. Furthermore, since light radiation heating and hot airflow heating act on different parts of the aerosol matrix 40 respectively, they form a complementary distribution in space and a temperature buffer in time, thereby reducing the problem of sudden temperature rises and falls in certain areas. This gentle and uniform heating process facilitates the full vaporization of the active ingredients in the aerosol matrix 40, avoiding the generation of impurities due to high-temperature charring. In summary, the heating component 10 provided in this application, through a combination of light radiation heating and hot airflow heating, improves the heating uniformity of the aerosol matrix 40, effectively reduces the risk of local overheating and impurity generation, and thus significantly improves the taste during aerosol inhalation.
[0034] In one embodiment, such as Figure 5 and Figure 6As shown, the heat exchanger 13 has a mounting portion 131, within which a mounting hole 1311 is provided. A portion of the light-emitting element 12 is disposed within the mounting hole 1311 and fits against the wall of the mounting hole 1311. The other portion of the light-emitting element 12 is located outside the mounting hole 1311 and on the side of the mounting hole 1311 facing the receiving cavity 111. Preferably, the light-emitting element 12 can be mounted in the mounting hole 1311 with an interference fit or a transition fit. The mounting hole 1311 can limit the light-emitting element 12 in the radial direction to prevent the light-emitting element 12 from moving easily. The mounting hole 1311 not only limits the light-emitting element 12 but also allows the light-emitting element 12 to fit against the heat exchanger 13, so that the heat from the light-emitting element 12 can be transferred to the surface of the heat exchanger 13 to heat the heat exchanger 13. The light-emitting element 12 located outside the mounting hole 1311 is positioned towards the receiving cavity 111, so that the light-emitting element 12 located outside the mounting hole 1311 can use light radiation to heat the aerosol matrix 40 inside the receiving cavity 111, thereby achieving the heating of the aerosol matrix 40 by combining light radiation and hot airflow in this application.
[0035] In one embodiment, such as Figure 3 and Figure 4 As shown, the airflow channel 112 has an air inlet 1121 and an air outlet 1122 arranged opposite to each other, and the air outlet 1122 is connected to the receiving cavity 111. Figure 3 , Figure 5 and Figure 6 As shown, the heat exchanger 13 has multiple heat exchange channels 132. One end of each heat exchange channel 132 faces and communicates with the air inlet 1121, and the other end faces and communicates with the air outlet 1122. Figure 3 As shown by the arrow Figure 3 The arrow points to the airflow direction of the heating component 10. The airflow enters the airflow channel 112 from the air inlet 1121 and then enters the heat exchange channel 132 from the end near the air inlet 1121. The airflow fully exchanges heat with the heat exchanger 13 within the heat exchange channel 132 to form a hot airflow, which then flows out of the heat exchange channel 132 from the end near the air outlet 1122, and finally enters the aerosol matrix 40 within the receiving cavity 111 from the air outlet 1122. By aligning the two ends of the heat exchange channel 132 with the air inlet 1121 and the air outlet 1122 respectively, the airflow can more easily enter the heat exchange channel 132 and be heated, and the heated airflow can more easily flow into the receiving cavity 111, improving the energy utilization rate of the light-emitting component 12.
[0036] Specifically, such as Figure 3As shown, the receiving cavity 111 and the airflow channel 112 are arranged sequentially along the first direction X. The length extension direction of the heat exchange channel 132 is consistent with the first direction X. This allows the airflow to more easily enter the heat exchange channel 132 and flow from the heat exchange channel 132 to the receiving cavity 111. In this embodiment, the heat exchange channel 132 is a straight channel. In other embodiments, the heat exchange channel 132 can also be a tortuous channel, so that the airflow can have more time to flow in the heat exchange element 13, allowing the airflow and the heat exchange element 13 to fully exchange heat.
[0037] In one embodiment, such as Figure 6 As shown, the heat exchanger 13 includes a plurality of fins 133 arranged at intervals around the light-emitting element 12, and a heat exchange channel 132 is formed between two adjacent fins 133. Specifically, each fin 133 can be connected to the mounting portion 131 of the heat exchanger 13, and the fins 133 are arranged at intervals around the mounting portion 131. Since the light-emitting element 12 can be installed in the mounting portion 131, the plurality of fins 133 are arranged around the light-emitting element 12. In some embodiments, the circumferential dimension of the end of the heat exchange channel 132 near the light-emitting element 12 is smaller than the circumferential dimension of the end of the heat exchange channel 132 away from the light-emitting element 12, and the circumferential direction of the heat exchange channel 132 can be consistent with the circumferential direction of the mounting hole 1311 of the mounting portion 131. The heat exchange channel 132 is narrow at the end near the mounting section 131 and wide at the end away from the mounting section 131. The fins 133 are radially arranged around the outer periphery of the mounting section 131, allowing more airflow to contact the surface of the fins 133. This effectively improves the heat exchange efficiency between the fins 133 and the airflow, enabling the cold airflow entering the heat exchange channel 132 to be quickly heated into hot airflow. The narrower section of the heat exchange channel 132 accelerates the airflow, with the high-speed fluid forcefully scouring the high-temperature zone at the root of the fins 133, breaking down the air boundary layer that hinders heat exchange and solving the problem of insufficient heat transfer in the initial stage. Conversely, the wider section of the heat exchange channel 132 has a relatively lower flow velocity, extending the contact time between the airflow and the middle and far ends of the fins 133, compensating for the low thermal conductivity of air, and allowing heat to be fully released into the airflow.
[0038] In other embodiments, the heat exchange channel 132 may also be a perforated structure, which may be distributed around the outer periphery of the mounting hole 1311.
[0039] In one embodiment, the light-emitting element 12 includes a light-emitting body (not shown) and a light-transmitting outer cover (not shown). The light-emitting body is disposed inside the outer cover, and the outer cover contacts the heat exchange element 13, i.e., the outer cover can be disposed within the mounting hole 1311. The light-emitting body is used to emit light, while the outer cover is used to protect the light-emitting body. Preferably, the outer cover is a fully transparent outer cover so that the light emitted by the light-emitting body can penetrate the outer cover. Generally, the light-emitting element 12 can be a standard component, such as a lamp tube or LED bead. The outer cover of the light-emitting element 12 is usually made of a material with low thermal conductivity, such as glass. Therefore, a heat exchange element 13 is needed to assist in heat exchange with the air. Generally, the heat exchange element 13 is configured to have a thermal conductivity greater than or equal to 120 W / (m·K). Preferably, a metal heat exchange element 13 can be used, such as an aluminum alloy heat exchange element 13. The thermal conductivity of the outer cover is usually not greater than 1.5 W / (m·K), and glass is usually used. It is evident that it is necessary to place the heat exchanger 13 on the outer periphery of the light-emitting element 12 to exchange heat with the air.
[0040] In one embodiment, such as Figure 3 As shown, the light-emitting element 12 has a fixed end 121 and a free end 122. The fixed end 121 is fixed to the support assembly 11, and the free end 122 is spaced apart from the inner wall of the airflow channel 112 and the receiving cavity 111. The heat exchange element 13 is arranged around the free end 122 and spaced apart from the inner wall of the airflow channel 112. Therefore, the energy of the light-emitting element 12 and the heat exchange element 13 can be used to heat the aerosol matrix 40 as much as possible, while minimizing heat conduction to the support assembly 11, thus improving the energy utilization rate of the heating assembly 10.
[0041] In one embodiment, such as Figure 3 As shown, the support assembly 11 includes a reflector 113, which has a receiving cavity 111 and an airflow channel 112. The reflector 113 is used to reflect the light emitted by the light-emitting element 12 to the aerosol matrix 40. The reflector 113 is configured to have a reflectivity greater than or equal to 90%, meaning that the material of the reflector 113 itself is a high-reflectivity material. Generally, the reflector 113 can be made of aluminum tubing, and the surface of the aluminum tubing is polished to improve the reflectivity of the aluminum tubing surface. Of course, the reflector 113 can also be made of other materials.
[0042] In other embodiments, the bracket assembly 11 includes a mounting member (not shown), which has a receiving cavity 111 and an airflow channel 112. The inner walls of the receiving cavity 111 and the inner walls of the airflow channel 112 are provided with reflective layers. In this embodiment, the material of the mounting member is not limited, and the reflective layer is configured to have a reflectivity of 90% or higher.
[0043] In one embodiment, such as Figure 3-5As shown, the support assembly 11 includes an annular sidewall 1131, and a support portion 1132 is provided inside the annular sidewall 1131. One end of the support portion 1132 along the axial direction of the annular sidewall 1131 surrounds the annular sidewall 1131 to form a receiving cavity 111. The other end of the support portion 1132 along the axial direction of the annular sidewall 1131 surrounds the annular sidewall 1131 to form an airflow channel 112. The support portion 1132 is used to support the bottom surface of the aerosol matrix 40. An opening for connecting the airflow channel 112 and the receiving cavity 111 can be formed on the support portion 1132 so that the light emitted by the light-emitting element 12 in the airflow channel 112 can pass through the opening to irradiate the aerosol matrix 40, and the hot airflow in the airflow channel 112 can pass through the opening to flow into the interior of the aerosol matrix 40. In some embodiments, the support portion 1132 includes a plurality of protrusions disposed on the inner wall of the annular sidewall 1131 and spaced apart along the circumferential direction of the annular sidewall 1131 to support the bottom surface of the aerosol matrix 40.
[0044] like Figure 3 As shown, the support assembly 11 of this application may include an air intake channel 114. The air intake channel 114 is arranged around the outer periphery of the receiving cavity 111 and the airflow channel 112. One end of the air intake channel 114 is connected to the outside atmosphere, and the other end of the air intake channel 114 is connected to the end of the airflow channel 112 away from the receiving cavity 111. Thus, the outside atmosphere enters the airflow channel 112 through the air intake channel 114. By setting the air intake channel 114 around the outer periphery of the receiving cavity 111 and the airflow channel 112, even if heat diffuses outward from the receiving cavity 111 and the airflow channel 112, the energy can be used to preheat the gas in the air intake channel 114, thereby further improving the energy utilization rate. Of course, in other embodiments, the support assembly 11 may also adopt a bottom air intake method, that is, the air intake channel 114 is entirely arranged on the side of the airflow channel 112 away from the receiving cavity 111.
[0045] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.
Claims
1. A heating assembly, characterized in that, include: A support assembly having a communicating receiving cavity and an airflow channel, the receiving cavity being used to contain an aerosol matrix; A light-emitting element, at least a portion of which is disposed within the airflow channel, the light-emitting element being used to emit light, the light being used to radiate and heat the aerosol matrix; The light-emitting element is disposed within the airflow channel and surrounding the light-emitting element. The light-emitting element is used to heat the heat exchanger, and the heat exchanger is used to exchange heat with the airflow entering the airflow channel to generate a hot airflow that heats the aerosol matrix.
2. The heating assembly according to claim 1, characterized in that, The heat exchanger has a mounting hole. A portion of the light-emitting element is disposed in the mounting hole and fits against the hole wall. Another portion of the light-emitting element is located outside the mounting hole and on the side of the mounting hole facing the receiving cavity.
3. The heating assembly according to claim 1, characterized in that, The airflow channel has an air inlet and an air outlet arranged opposite to each other, and the air outlet is connected to the receiving cavity; the heat exchanger is provided with a plurality of heat exchange channels, one end of the heat exchange channel faces the air inlet and is connected to the air inlet, and the other end of the heat exchange channel faces the air outlet and is connected to the air outlet.
4. The heating assembly according to claim 3, characterized in that, The heat exchanger includes a plurality of fins arranged at intervals around each other, the plurality of fins surrounding the light-emitting element, and the heat exchange channel is formed between two adjacent fins; or, the heat exchange channel is a perforated structure.
5. The heating assembly according to claim 3, characterized in that, The circumferential dimension of the heat exchange channel near the light-emitting element is smaller than the circumferential dimension of the heat exchange channel away from the light-emitting element.
6. The heating assembly according to any one of claims 1-5, characterized in that, The light-emitting element includes a light-emitting body and a light-transmitting outer cover. The light-emitting body is disposed inside the outer cover, and the outer cover is in contact with the heat exchange element. The heat exchange element is configured to have a thermal conductivity greater than or equal to 120 W / (m·K).
7. The heating assembly according to any one of claims 1-5, characterized in that, The light-emitting element has a fixed end and a free end. The fixed end is fixed to the support assembly, and the free end is spaced apart from the inner wall of the airflow channel and the receiving cavity. The heat exchange element is arranged around the free end and spaced apart from the inner wall of the airflow channel.
8. The heating assembly according to any one of claims 1-5, characterized in that, The support assembly includes a reflector, which has the receiving cavity and the airflow channel inside; the reflector is used to reflect the light emitted by the light-emitting element to the aerosol matrix; the reflector is configured to have a reflectivity of 90% or higher. Alternatively, the bracket assembly includes a mounting member having the receiving cavity and the airflow channel therein, and a reflective layer having a reflectivity of 90% or greater on the inner wall of the receiving cavity and the inner wall of the airflow channel.
9. The heating assembly according to any one of claims 1-5, characterized in that, The support assembly includes an annular sidewall, and a support portion is provided inside the annular sidewall. One end of the support portion along the axial direction of the annular sidewall surrounds the annular sidewall to form the receiving cavity, and the other end of the support portion along the axial direction of the annular sidewall surrounds the annular sidewall to form the airflow channel. The support portion is used to support the bottom surface of the aerosol matrix.
10. An aerosol generating device, characterized in that, Includes the heating assembly as described in any one of claims 1-9.