Heating assembly and aerosol generating device

Abstract

The utility model relates to the technical field of aerosol generation, in particular to a heating assembly and an aerosol generation device.A heating cavity is formed in the heating assembly and used for containing and heating an aerosol generation product, the cross section contour of the heating cavity is in an oval shape, and the oval shape is provided with a long axis and a short axis; the size of the short shaft is smaller than the outer diameter of the aerosol generating product before being extruded, and after the aerosol generating product is inserted into the heating cavity, at least part of the cavity wall of the heating cavity can extrude the aerosol generating product, so that the aerosol generating product deforms inwards in the radial direction, and the distance of part of the structure of the aerosol generating product from the outer wall to the center is reduced; the heat transfer distance is shortened, so that the heat efficiency is improved, the power consumption is reduced, the temperature difference between the surface and the center of the aerosol generating product is reduced, meanwhile, the risk that the aerosol generating product is not fully heated due to too low temperature and an external paper tube burns to generate burnt smell due to too high temperature can be avoided, and the taste of aerosol is improved.

Description

Technical Field

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

[0002] Aerosol generating devices utilize the thermal effect of electronic heating elements to bake and heat aerosol-generating products, enabling them to produce volatile substances such as aerosols without combustion. Currently, a major heating method for aerosol generating devices is tubular circumferential heating. Specifically, the heating element is a hollow cylindrical structure, and the heat generated when the heating element is energized is transferred radially from the circumference of the aerosol generating product towards the center. After the aerosol generating product is inserted into the heating element, its circumference is in contact with the inner wall of the heating element. This structure increases the distance of heat transfer from the circumference to the center, resulting in a large radial temperature difference in the aerosol generating product. This can easily reduce heating efficiency and increase power consumption. Furthermore, the temperature difference can cause some aerosol generating substrates to develop a burnt odor due to high temperatures. Utility Model Content

[0003] This application provides a heating component and an aerosol generating device, which can shorten the heat transfer distance within the aerosol-generated product, improve heating efficiency, and reduce power consumption.

[0004] This application provides a heating assembly having a heating chamber for containing and heating an aerosol-generated product, the heating chamber having an elliptical cross-sectional profile.

[0005] The ellipse has a major axis and a minor axis, the size of which is smaller than the outer diameter of the aerosol-generating article before it is compressed; after the aerosol-generating article is inserted into the heating chamber, at least a portion of the chamber wall of the heating chamber is capable of compressing the aerosol-generating article.

[0006] In some alternative embodiments, the length of the long axis is greater than the outer diameter of the aerosol-generated article before it is extruded.

[0007] In some optional embodiments, after the aerosol generating article is inserted into the heating chamber, at least a portion of the cavity wall of the heating chamber is formed between the outer wall of the aerosol generating article and the airflow channel is in communication with the outside.

[0008] In some optional embodiments, the heating assembly includes a heating substrate and a heating element, wherein the heating cavity is formed inside the heating substrate, and the heating element is disposed on the outer wall of the heating substrate.

[0009] In some optional embodiments, the outer wall of the heating substrate is provided with a heat insulation layer, and at least part of the heating element is embedded in the heat insulation layer.

[0010] In some alternative embodiments, the heating element includes a heating film, a heating wire, a heating mesh, a heating sheet, or a heating circuit.

[0011] In some alternative embodiments, the heating substrate is a hollow tube.

[0012] In some optional embodiments, the heating substrate includes a plurality of arc-shaped heating units, which are arranged in an elliptical array to enclose the heating cavity between the plurality of heating units.

[0013] In some alternative embodiments, the plurality of heating units are spaced apart or insulated from each other, and each heating unit is individually electrically connected to a power supply component to control the operation of the heating unit individually.

[0014] This application also provides an aerosol generating apparatus, including a power supply component and a heating component as described above, wherein the power supply component is used to provide the power required for the heating component to operate.

[0015] According to the heating component and aerosol generating device in this embodiment, since the cross-sectional profile of the heating chamber in the heating component is elliptical, the ellipse has a major axis and a minor axis. The size of the minor axis is smaller than the outer diameter of the aerosol generating product before it is squeezed. This causes the aerosol generating product to be squeezed and deformed by the cavity wall of the heating chamber after it is inserted into the heating chamber. This reduces the distance from the outer wall of a portion of the aerosol generating product to the center, thereby shortening the heat transfer distance. This can improve thermal efficiency and reduce power consumption. At the same time, it can also avoid the risk of insufficient heating of the aerosol generating product due to excessively low temperature and the risk of burnt smell caused by burning of the external paper tube due to excessively high temperature. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the generating device in use in one embodiment;

[0017] Figure 2 This is a structural cross-sectional view of the generating device in use in one embodiment;

[0018] Figure 3 This is a schematic diagram of the lateral structure of the heating component in one embodiment;

[0019] Figure 4 This is a schematic diagram of the transverse structure of the heating component after aerosol is inserted to generate the product in one embodiment.

[0020] Figure 5 This is a schematic diagram of the airflow channel in the heating assembly in one embodiment;

[0021] Figure 6 This is a disassembly diagram of the heating component in the first embodiment;

[0022] Figure 7 This is a cross-sectional view of the heating component in the second embodiment;

[0023] Figure 8 This is a schematic diagram of the lateral structure of the heating component in the third embodiment;

[0024] Figure 9 This is a schematic diagram of the structure of the heating unit in one embodiment;

[0025] Figure 10 This is a cross-sectional view of the structure of an article formed by inserting aerosol into a heating component in one embodiment.

[0026] Wherein: 1. Generating device; 100. Outer shell; 200. Power supply component; 300. Heating component; 310. Heating cavity; 320. Airflow channel; 330. Heating substrate; 331. Heating unit; 340. Heating element; 341. Heating wire; 342. Conductive part; 343. Heating core; 3431. First part; 3432. Second part; 350. Insulation layer; 360. Insulation tube;

[0027] 2. Aerosol-generating products;

[0028] A1, Major axis of the heating chamber; B1, Minor axis of the heating chamber; r, Radius of the aerosol-generated product; A2, Major axis of the aerosol-generated product after extrusion; B2, Minor axis of the aerosol-generated product after extrusion. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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).

[0032] Please see Figures 1 to 10 The aerosol generating device 1 (hereinafter referred to as "generating device 1") is an apparatus used to heat the aerosol generating product 2 to atomize it into an aerosol. The generating device 1 includes a housing 100, a power supply component 200, and a heating component 300. The housing 100 can be understood as an assembly of multiple structural components, which provides installation space for the power supply component 200 and the heating component 300. The power supply component 200 can provide the power required for the operation of the heating component 300. Correspondingly, after the heating component 300 is connected to the power supply component 200 and energized, it can generate heat to heat the aerosol generating product 2.

[0033] It should be noted that the term "aerosol" in this context refers to a dispersion of solid or liquid particles in a gas. The term "aerosol" as used herein can generally refer to substances that have been vaporized, atomized, sprayed, or jetted, or otherwise transformed from a solid or liquid form into an inhalable form containing suspended solid or liquid drug particles.

[0034] Aerosol generating article 2 is generally cylindrical in shape and uses a paper tube as a support structure to avoid the problem of the support section collapsing due to deformation caused by heat, thus losing its support function. The interior of the paper tube contains a substance capable of atomizing and generating an aerosol. This substance is any suitable compound or mixture of compounds that facilitates aerosol formation during use. This substance includes, but is not limited to: polyols, such as triethylene glycol, 1,3-butanediol, and glycerol; esters of polyols, such as mono-, di-, or triacetic acid esters of glycerol; and aliphatic esters of mono-, di-, or polycarboxylic acids, such as dimethyl dodecanoate and dimethyl tetradecanoate. Nicotine may also be included. Alternatively, glycerol (also known as glycerol) with a higher boiling point than nicotine may be included. Propylene glycol or plant-based materials may also be included.

[0035] In related technologies, to accommodate the structure of the aerosol-generating article 2 and to enclose and heat it, the heating component 300 in the generating device 1 forms a circular heating cavity 310. The inner wall of the heating cavity 310 is either completely fitted to or spaced apart from the outer wall of the aerosol-generating article 2 to allow gas to pass uniformly between them. In this design, when the heat from the heating component 300 is transferred radially from the outer wall to the center of the aerosol-generating article 2, the heat transfer distance in each part is relatively long, thereby reducing thermal efficiency and increasing the power consumption of the device.

[0036] In order to solve the above-mentioned technical problems, this application has improved the heating component 300. The housing 100 and the power supply component 200 are consistent with the prior art and will not be described in detail here. The heating component 300 in this application will be described in detail below.

[0037] Please continue reading. Figures 3 to 5 The heating assembly 300 has a heating chamber 310 for accommodating and heating the aerosol-generating article 2. The heating chamber 310 has an elliptical cross-sectional profile, with a major axis A1 and a minor axis B1. The size of the minor axis B1 is smaller than the outer diameter r of the aerosol-generating article 2 before compression. After the aerosol-generating article 2 is inserted into the heating chamber 310, at least a portion of the cavity wall of the heating chamber 310 can compress the aerosol-generating article 2, causing the aerosol-generating article 2 to deform radially inward. Figure 4 As shown, the cylinder indicated by the dashed line is compressed into an ellipse indicated by the solid line, thereby reducing the distance from the outer wall to the center of the aerosol-generating product 2 from L1 to L2. L1 is the radius r of the aerosol-generating product 2, and L2 is the minor axis B2 of the compressed aerosol-generating product 2. This shortens the heat transfer distance, thereby improving thermal efficiency and reducing power consumption. It also avoids the risk of insufficient heating of the aerosol-generating product 2 due to excessively low temperature and the risk of burnt taste caused by burning of the external paper tube due to excessively high temperature. At the same time, after the aerosol-generating product 2 is compressed and deformed, the air inside can be squeezed out, and its internal density increases, which can further improve the thermal conductivity, reduce the temperature difference between the surface and the center of the aerosol-generating product 2, and thus improve the taste of the aerosol.

[0038] It should be noted that the ellipse mentioned in this application is not strictly limited to an elliptical structure; elliptical-like structures are also within the scope of protection of this application.

[0039] In some embodiments, the major axis A1 of the ellipse is larger than the outer diameter r of the aerosol generating article 2 before it is compressed, which facilitates the insertion of the aerosol generating article 2 into the heating chamber 310. Since the major axis A1 of the ellipse is larger than the outer diameter r of the aerosol generating article 2 before it is compressed, the aerosol generating article 2 is compressed inward by the heating chamber 310 along the minor axis B1. After being compressed, the aerosol generating article 2 also has a major axis A2 and a minor axis B2. The major axis A2 is larger than its diameter r before it is compressed, and the minor axis B2 is smaller than its diameter r before it is compressed. It is approximately the same length as the minor axis B1 of the heating chamber 310, so that this part of the aerosol generating article 2 is fitted against the inner wall of the heating chamber 310 to transfer heat from the heating assembly 300 to the aerosol generating article 2 by means of thermal conduction. In this embodiment, the size of the long axis A2 of the aerosol-generating article 2 after being extruded can also be approximately the same as the size of the long axis A1 of the heating chamber 310, so that all the outer walls of the aerosol-generating article 2 are fitted to the inner wall of the heating chamber 310.

[0040] In some embodiments, the major axis A2 of the compressed aerosol generating article 2 is smaller than the major axis A1 of the heating chamber 310. This results in an airflow channel 320 being formed between at least a portion of the wall of the heating chamber 310 and the outer wall of the aerosol generating article 2 after the aerosol generating article 2 is inserted into the heating chamber 310. The airflow channel 320 is connected to the outside. When the user inhales, based on the Bernoulli negative pressure principle, outside air flows into the airflow channel 320. Part of the heat generated by the heating component 300 directly heats the aerosol generating article 2 through heat conduction, and part of it heats the air into a hot airflow, further improving the heat utilization rate of the heating component 300 and reducing heat loss. At the same time, the hot airflow can also accelerate the aerosol generation speed, improving the user experience. At least one airflow channel 320 can be provided. When the heating chamber 310 is a regular ellipse, symmetrically distributed airflow channels 320 are formed on both sides of the aerosol generating article 2, thereby ensuring that the aerosol generating article 2 is heated evenly, which helps to improve the taste of the aerosol. The airflow channel 320 also extends along the axial direction of the heating chamber 310, which can ensure smooth airflow during suction.

[0041] In some embodiments, the heating component 300 can employ electromagnetic heating, resistance heating, infrared radiation heating, or a combination of heating methods. The heating component 300 includes a heating substrate 330, with a heating cavity 310 formed inside. The heating substrate 330 can be directly composed of conductive metal, conductive ceramic materials, etc., and heats up directly after being energized. Alternatively, the heating substrate 330 can be a metallic sensor that can heat up in a magnetic field. The heating substrate 330 can also be made of a metal or non-metal material with a high thermal conductivity. As a supporting and heat-conducting structure, the high thermal conductivity of the heating substrate 330 facilitates heat transfer and promotes temperature uniformity during rapid heating. The heating substrate 330 can be made of stainless steel, aluminum, aluminum alloy, or ceramic materials.

[0042] In one embodiment, when the heating substrate 330 serves as both a support structure and a heat-conducting structure, the heating assembly 300 further includes a heating element 340. The heating element 340 acts as a heat source, generating heat upon energization and transferring the heat to the aerosol-generating article 2. The heating element 340 can be disposed on the inner or outer wall of the heating substrate 330, and the heating element 340 at least covers at least a portion of the wall surface of the heating substrate 330.

[0043] When the heating element 340 is disposed on the outer wall of the heating substrate 330, the heating element 340 is made of conductive ceramic or conductive metal material and can directly generate heat after being energized. The heat generated by the heating element 340 is transferred to the aerosol generating product 2 after passing through the heating substrate 330, which can prevent the heating element 340 from directly contacting the aerosol generating product 2, thereby preventing the paper tube of the aerosol generating product 2 from burning at high temperature.

[0044] When the heating element 340 is disposed on the inner wall of the heating substrate 330, the heating element 340 can form a heating cavity 310 after it is attached to the heating substrate 330. The heat generated by the heating element 340 is directly transferred to the aerosol generating product 2. In this embodiment, the power of the heating element 340 can be reduced to avoid the high-temperature aerosol generating product 2 from burning.

[0045] In some embodiments, the heating element 340 includes a heating film, a heating wire 341, a heating mesh, a heating plate, or a heating circuit. The heating film is formed by coating a conductive paste onto the inner or outer wall of the heating substrate 330. The heating wire, heating mesh, or heating plate can be connected to the heating substrate 330 by embedding or bonding. The heating circuit can be formed by circuit printing on the inner or outer wall of the heating substrate 330.

[0046] Please continue reading. Figure 6When the heating element 340 is a heating mesh, it includes multiple heating wires 341 and conductive parts 342. The multiple heating wires 341 form a mesh structure, and the conductive parts 342 are used to realize the electrical connection between the heating wires 341 and the power supply component 200. In this embodiment, the mesh structure may include at least one of rectangular, rhomboid, polygonal, circular, or elliptical shapes. In order to ensure that the aerosol generating product 2 is heated uniformly, the mesh structure may be designed with a centrally symmetrical shape.

[0047] In some embodiments, multiple heating elements 340 may be provided, and each heating element 340 is individually connected to the power supply component 200, so that each heating element 340 can be individually controlled. Multiple heating elements 340 can be arranged sequentially along the axial direction of the heating base 330, or they can be arranged along the outer peripheral surface of the heating base 330, so as to achieve temperature control in different areas and achieve better suction effect.

[0048] Please see Figure 7 When the heating element 340 is a heating circuit, it includes a bent and extended heating core 343 and conductive portions 342 disposed at both ends of the heating wire 341. The conductive portions 342 are used to realize the electrical connection between the heating core 343 and the power supply component 200. In this embodiment, the heating core 343 may include at least one part. For example, the heating core 343 includes two parts, namely a first part 3431 and a second part 3432 connected in sequence. A conductive portion 342 is provided at the end of the first part 3431 away from the second part 3432, and a conductive portion 342 is also provided at the end of the second part 3432 away from the first part 3431. The two conductive portions 342 correspond to the positive and negative terminals in the circuit. The specific shape of each part of the heating core 343 can be designed according to actual needs. For example, the first part 3431 and the second part 3432 can both be arcs with equal radii, or arcs with unequal radii, or other arc shapes. The first part 3431 and the second part 3432 can extend along the same straight line or along different straight lines, which is not limited here.

[0049] In other embodiments, the first portion 3431 and the second portion 3432 of the heating core 343 can be designed as straight extensions to improve the heat concentration of the heating core 343. Alternatively, at least a portion of the first portion 3431 and the second portion 3432 can be designed as straight extensions, while the other portions are designed as arcs, thereby making it easier for heat to disperse to the periphery and avoiding local heat concentration. Specifically, when the heating core 343 is designed as a bent extension, it can be bent into various shapes such as circles, ellipses, polygons, waves, and broken lines (such as "V" shapes).

[0050] Please continue reading. Figure 8In some embodiments, a heat insulation layer 350 may be provided on the outer wall of the heating substrate 330, and at least a portion of the heating element 340 is embedded within the heat insulation layer 350. The heat insulation layer 350 may be made of a non-metallic material with a high thermal conductivity. When the heating substrate 330 is made of a metallic material, the heat insulation layer 350 not only improves heat utilization but also insulates the heating substrate 330 and the heating element 340, preventing short circuits between them. Simultaneously, the heat insulation layer 350 provides a connection structure between the heating substrate 330 and the heating element 340, allowing the heating element 340 to be fixedly mounted on the outer wall of the heating substrate 330. The heat insulation layer 350 may include a ceramic material, such as zirconium oxide, alumina, silicon carbide, aluminum nitride, or silicon nitride. Under certain conditions, this ceramic material is in a flowable molten state and can harden under other conditions, thus facilitating the embedding and fixing of the heating element 340.

[0051] In some embodiments, the heating substrate 330 is a hollow tube. The cross-sectional outline of the hollow region of the hollow tube is elliptical, so that the hollow region can be used as a heating cavity 310 to meet the extrusion requirements of the aerosol-generated product 2.

[0052] In some embodiments, the hollow tube can be cylindrical or quasi-cylindrical in shape, with a heating cavity having an elliptical cross-sectional profile only inside. Of course, when the heating element 340 is disposed on the outer wall of the hollow tube, or when the hollow tube is directly electrically conductive or heated in a magnetic field, the thickness of the hollow tube should be uniform to ensure uniform heating. In this case, the hollow tube can be elliptical cylindrical in shape, with a cross-sectional profile of a uniformly sized elliptical ring.

[0053] Please see Figure 9 In some embodiments, the heating substrate 330 includes a plurality of arc-shaped heating elements 331 arranged in an elliptical array to form a heating cavity 310 between the plurality of heating elements 331. Since the plurality of heating elements 331 are arranged in an elliptical array, a heating cavity 310 with an elliptical cross-sectional profile is formed between the plurality of heating elements 331.

[0054] Multiple heating units 331 can be spaced apart or insulated from each other, so that each heating unit 331 is individually electrically connected to the power supply component 200, thereby enabling individual control of the operation of the heating unit 331. Specifically, since multiple heating units 331 are arrayed to form a heating substrate 330, which surrounds the aerosol generating article 2, and the distance from the cavity wall of the heating chamber 310 within the heating substrate 330 to the outer wall of the aerosol generating article 2 is different, in order to achieve zoned heating of the aerosol generating article 2 or to control the heating consistency of the aerosol generating article 2, the corresponding heating units 331 can be set to work individually, multiple heating units 331 can work in combination, or all heating units 331 can work together.

[0055] When multiple heating units 331 are spaced apart, the spacing between adjacent heating units 331 is consistent, ensuring uniform heating of the aerosol-generating product 2. The multiple heating units 331 are insulated from each other, meaning an insulating structure is installed between them to prevent short circuits. This insulating structure can be made of materials such as insulating ceramics. Because insulating ceramics have adhesive properties, they can be placed between adjacent heating units 331 or connected into a single structure, forming a heating cavity 310 with stable shape and size. Alternatively, the insulating structure can be connected using threaded connections, snap-fit ​​connections, or other methods. When multiple heating units 331 are connected by an insulating structure, the insulating structure can be designed to be adjustable, allowing adjustment of the dimensions of the heating cavity 310 (major axis A1 and minor axis B1) to accommodate aerosol-generating products 2 of different sizes (diameter 2r or radius r).

[0056] To ensure uniform heating of the aerosol-generating product 2, the thickness, material, and corresponding arc angle of the multiple heating units 331 are all consistent. Alternatively, the multiple heating units 331 can be configured with different thicknesses, materials, or arc angles depending on the heating requirements of the aerosol-generating product 2. For example, the heating units 331 located closer to the center can be designed to be made of a material with low resistance to reduce their heating temperature, while the heating units 331 located further from the center, especially those forming the airflow channel 320 with the aerosol-generating product 2, can be designed to be made of a material with high resistance to increase their heating temperature.

[0057] Please see Figure 10 In some embodiments, the heating assembly 300 further includes a heat insulation tube 360 ​​disposed outside the heating substrate 330 to reduce heat loss within the heating assembly 300. The heat insulation tube 360 ​​is made of a material with low thermal conductivity, preferably a material with low thermal conductivity such as silicone.

[0058] When the heating substrate 330 is composed of multiple spaced-apart heating units 331, a support tube should also be provided on the outside of the heating substrate 330 so that the multiple heating units 331 can be arranged to form a heating cavity 310. Since the support tube is in direct contact with the heating units 331, in order to reduce heat loss, the support tube is also made of a material with low thermal conductivity, and the thickness of the support tube is designed to be small, so as to support multiple heating units 331 and reduce heat loss. The support tube can also be a support film.

[0059] In practical applications, the heating unit 331 can be understood as the heating substrate 330, and its composition is consistent with that of the heating substrate 330. That is, the heating unit 331 can also include a substrate and a heating element 340 mounted thereon as a heat source, or it can directly use the substrate as a heat source. When the heating unit 331 also uses a heating wire 341, heating mesh, heating plate, heating film, or heating circuit mounted on the substrate as a heat source, the substrate is an arc-shaped plate made of a metal or non-metal material with a high thermal conductivity, and the support tube can be made of a metal or non-metal material with a low thermal conductivity. When the heating unit 331 does not include a heating wire 341, heating mesh, heating plate, heating film, or heating circuit, and the substrate is directly used as a heat source, the substrate can be made of a conductive metal material or conductive ceramic, and the support tube is made of an insulating material to avoid short circuits.

[0060] 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, The heating assembly has a heating chamber for containing and heating the aerosol-generated product, and the cross-sectional profile of the heating chamber is elliptical. The ellipse has a major axis and a minor axis, the size of which is smaller than the outer diameter of the aerosol-generating article before it is compressed; after the aerosol-generating article is inserted into the heating chamber, at least a portion of the chamber wall of the heating chamber is capable of compressing the aerosol-generating article.

2. The heating assembly according to claim 1, characterized in that, The length of the long axis is greater than the outer diameter of the aerosol-generated product before it is extruded.

3. The heating assembly according to claim 1, characterized in that, After the aerosol generating article is inserted into the heating chamber, at least a portion of the cavity wall of the heating chamber and the outer wall of the aerosol generating article form an airflow channel, which communicates with the outside.

4. The heating assembly according to claim 1, characterized in that, The heating assembly includes a heating base and a heating element. The heating base has a heating cavity formed inside it, and the heating element is disposed on the outer wall of the heating base.

5. The heating assembly according to claim 4, characterized in that, The outer wall of the heating substrate is provided with a heat insulation layer, and at least part of the heating element is embedded in the heat insulation layer.

6. The heating assembly according to claim 4, characterized in that, The heating element includes a heating film, heating wire, heating mesh, heating plate, or heating circuit.

7. The heating assembly according to claim 4, characterized in that, The heating substrate is a hollow tube.

8. The heating assembly according to claim 4, characterized in that, The heating substrate includes multiple arc-shaped heating units, which are arranged in an elliptical array to form the heating cavity between the multiple heating units.

9. The heating assembly according to claim 8, characterized in that, Multiple heating units are spaced apart or insulated from each other, and each heating unit is individually electrically connected to a power supply component to control the operation of the heating unit independently.

10. An aerosol generating device, characterized in that, It includes a power supply component and a heating component as described in any one of claims 1-9, wherein the power supply component is used to provide the power required for the heating component to operate.

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