Heating assembly, heating device, and aerosol-generating apparatus

Abstract

This application relates to the field of aerosol generation technology, and more specifically to a heating component, heating device, and aerosol generation equipment. The heating component includes a heat conductor, a heat exchanger, and a heating element. The heat conductor has a heating cavity for accommodating the aerosol generation product. The heating cavity has a first end and a second end arranged opposite to each other along its own axis. The first end is used for inserting the aerosol generation product into the heating cavity. The heat exchanger is disposed inside the second end. The heat exchanger has a heat exchange channel and an adsorption channel. The heat exchange channel penetrates the heat exchanger and is used to heat the airflow flowing through the heat exchanger, enabling the heat exchanger to heat the flowing airflow. The adsorption channel is spaced apart from the heat exchange channel and is used to adsorb liquid and prevent liquid from passing through. The heating element is attached to the circumferential surface of the heat exchanger and is used to generate heat after being energized. This application can solve the technical problem that the heat exchange core is easily blocked by liquid, affecting its service life and generating impurities.

Description

Technical Field

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

[0002] Aerosol generation equipment utilizes the principle of heating without combustion to generate aerosols from aerosol-generating products. Heating without combustion means that the aerosol-generating product does not burn directly; instead, an external heat source heats the aerosol-generating matrix to produce aerosols. Existing aerosol generation equipment generally employs circumferential heating, central heating, and airflow heating methods to heat the aerosol-generating product. In airflow heating equipment, the heating component includes a heat exchanger core, which heats the flowing airflow. However, since the heat exchanger core is typically located at the end of the aerosol-generating product, condensate from the aerosol easily flows into the heat exchanger core under gravity, clogging the heat exchange holes. This affects the lifespan of the heat exchanger core and the generation equipment. Furthermore, the condensate at the heat exchanger core, when reheated, generates impurities that affect the taste of the aerosol, thus impacting the user experience. Utility Model Content

[0003] This application provides a heating component, a heating device, and an aerosol generating equipment to solve the technical problem that heat exchange cores are easily blocked by liquids, affecting their service life and generating impurities.

[0004] This application provides a heating assembly, including:

[0005] A heat conductor having a heating cavity for accommodating an aerosol-generating product; the heating cavity has a first end and a second end disposed opposite to each other along its own axis, the first end being for inserting the aerosol-generating product into the heating cavity.

[0006] A heat exchanger is disposed inside the second end; the heat exchanger has a heat exchange channel and an adsorption channel, the heat exchange channel penetrating the heat exchanger and used to heat the airflow flowing through the heat exchanger; the adsorption channel is spaced apart from the heat exchange channel and used to adsorb liquid and prevent liquid from passing through; and

[0007] A heating element is attached to the circumferential surface of the heat exchanger and is used to generate heat when energized.

[0008] In some optional embodiments, the pore size of the heat exchange channel is larger than the pore size of the adsorption channel;

[0009] And / or, the inner surface of the adsorption channel is provided with an oleophilic adsorption layer, the oleophilic adsorption layer comprising at least one of a porous ceramic layer, an activated carbon coating, or a polymer resin layer.

[0010] In some alternative embodiments, the heating element is etched from a porous metal felt; the etched pattern of the heating element is one of spiral, grid, or honeycomb.

[0011] In some alternative embodiments, the heating element is adhered to or embedded on the circumferential surface of the heat exchanger.

[0012] In some optional embodiments, the heat exchanger is constructed by stacking multiple porous metal felts along the axial direction of the heating cavity; each porous metal felt is provided with multiple heat exchange holes and adsorption holes, the heat exchange holes are distributed in a ring array on the porous metal felt, and the adsorption holes are distributed in the gaps of the ring array; at least some of the heat exchange holes of the multiple porous metal felts are connected along the axial direction of the heating cavity to form the heat exchange channel, and at least some of the adsorption holes of the multiple porous metal felts are staggered along the axial direction of the heating cavity.

[0013] In some alternative embodiments, the projections of the adsorption holes of two adjacent porous metal felts in the axial direction of the heating chamber are completely staggered.

[0014] In some optional embodiments, the heating assembly further includes a heat insulation element disposed between the heat exchanger and the heat conductor; the extension length of the heat insulation element is greater than the extension length of the heat exchanger in the axial direction of the heating chamber.

[0015] In some optional embodiments, the inner wall of the heat insulation body is provided with a first limiting structure and a second limiting structure in sequence along the axial direction of the heating cavity, and the two ends of the heat exchange body along the axial direction of the heating cavity are respectively engaged with the first limiting structure and the second limiting structure; the inner wall of the heat conductor located at the second end is provided with a first engaging structure, and the outer wall of the heat insulation body is provided with a second engaging structure that cooperates with the first engaging structure.

[0016] This application provides a heating device, including:

[0017] Support assembly, the support assembly having an air intake channel; and

[0018] As described above, the heating component is suspended inside the support component, and an airflow channel is formed between the heating component and the support component, the airflow channel connecting the air intake channel and the heat exchange channel.

[0019] This application provides an aerosol generating device, characterized in that it includes a power supply component and a heating device as described above, wherein the power supply component is used to supply power to the heating device.

[0020] According to the heating component, heating device, and aerosol generating equipment in this embodiment, the heating component includes a heat conductor, a heat exchanger, and a heating element. The heat exchanger has a heat exchange channel and an adsorption channel. The heat exchange channel runs through the heat exchanger and is used for airflow to pass through the heat exchanger, so that the heat exchanger can heat the airflow, thereby uniformly heating the aerosol generating product. By using circumferential heating and airflow heating, the heat utilization rate can be improved, and the aerosol generation rate can be accelerated. The adsorption channel can also use capillary effect to adsorb liquid and prevent liquid from passing through, thereby avoiding liquid leakage and solving the problem of liquid leakage damaging or corroding other components of the aerosol generating equipment and affecting the life of the aerosol generating equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the aerosol generating device in use in one embodiment;

[0022] Figure 2 This is a structural cross-sectional view of an aerosol generation device in one embodiment;

[0023] Figure 3 This is a cross-sectional view of the heating device in one embodiment;

[0024] Figure 4 This is a half-sectional view of the heat exchanger and heating element after assembly in one embodiment.

[0025] Figure 5 This is a full sectional view of the heat exchanger and heating element after assembly in one embodiment;

[0026] Figure 6 This is a schematic diagram of the structure of a porous metal felt in one embodiment;

[0027] Figure 7 This is an exploded view of the heating component in one embodiment;

[0028] Figure 8 for Figure 3 A magnified view of a portion of point A in the middle.

[0029] Among them: 1. Aerosol generation equipment;

[0030] 10. Shell;

[0031] 20. Power supply device; 21. Battery; 22. Circuit board;

[0032] 30. Heating device; 31. Heating assembly; 311. Heat conductor; 3111. Heating chamber; 3112. First end; 3113. Second end; 3114. Flange; 3115. First snap-fit ​​structure; 312. Heat exchanger; 3121. Heat exchange channel; 3122. Adsorption channel; 3123. Porous metal felt; 3124. Heat exchange hole; 3125. Adsorption hole; 313. Heating element; 314. Heat insulation body; 3141. First limiting structure; 3142. Second limiting structure; 3143. Second snap-fit ​​structure; 32. Support assembly; 321. Air inlet channel; 3211. Insertion port; 3212. Air inlet; 322. Support body; 3221. Support protrusion; 323. Top cover; 3231. Insertion part; 324. Base; 33. Airflow channel;

[0033] A. Aerosol-generated product; OO. Axis of the heating chamber. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] 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).

[0037] This application provides an aerosol generating device 1 (hereinafter referred to as "generating device"), which can heat aerosol generating product A to generate aerosol using the principle of heating without combustion, for user use. Please refer to... Figures 1 to 8The generating equipment includes a heating device 30 and a power supply device 20. The power supply device 20 can supply power to the heating device 30 and control the operating state of the heating device 30, such as controlling the heating device 30 to start or stop, or adjusting the operating power of the heating device 30 to meet the requirements of the heating curve (the curve of the temperature change of the heating device 30 over time) of different types of aerosol generated products A. The heating device 30 has a heating chamber 3111, and the aerosol generated product A is inserted into the heating chamber 3111 and heated after the heating device 30 is powered on.

[0038] 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.

[0039] Aerosol-generating article A is any suitable compound or mixture of compounds that facilitates aerosol formation during use. Aerosol-generating article A 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. Glycerol (also known as glycerol) with a higher boiling point than nicotine may also be included. Propylene glycol or plant-based materials may also be included. Aerosol-generating article A generally comprises forming paper, which is wrapped and shaped into a cylinder or other shape.

[0040] The aerosol generating product A includes a matrix section, an airflow section, a cooling section, and a filter rod section arranged along its axial direction. When the aerosol generating product A is placed in the generating equipment, the matrix section is completely contained within the heating chamber 3111 to ensure that the matrix section can be fully heated. Furthermore, the upper end of the matrix section (the side of the airflow outlet) is flush with the upper end of the heating chamber 3111, which can further effectively ensure uniform heating.

[0041] Please see Figure 2The generating device also includes a housing 10, within which a heating device 30 and a power supply device 20 are housed. The housing 10 facilitates the protection of the heating device 30 and the power supply device 20, and also allows for their portability and movement. The housing 10 can be understood as an assembly of multiple components, with an internal cavity to house the heating device 30 and the power supply device 20. The housing 10 also includes corresponding assembly structures to secure the heating device 30 and the power supply device 20; for example, mounting protrusions or mounting grooves may be provided within the housing 10. The power supply device 20 includes a battery 21 and a circuit board 22 that are electrically connected. The battery 21 can be a disposable rechargeable battery or a rechargeable battery capable of multiple charge-discharge cycles. The circuit board 22 includes a flexible circuit board or a PCBA board. The circuit board 22 facilitates the adjustment of the operating state of the heating device 30, and in some designs, allows for the self-starting of the heating device 30. The assembly of the housing 10, heating device 30, and power supply device 20, as well as the structure of the power supply device 20, are matters of prior art and will not be elaborated upon here. The core improvement of this application, namely the heating device 30, will be described in detail below.

[0042] Please see Figure 3 The heating device 30 includes a support assembly 32 and a heating assembly 31. The support assembly 32 is disposed inside the housing 10 and has an installation space inside. The heating assembly 31 is disposed within this installation space. The support assembly 32 facilitates the installation and fixation of the heating assembly 31. A heating chamber 3111 is formed within the heating assembly 31 for accommodating the aerosol-generated product A. An air inlet channel 321 is provided on the support assembly 32. The heating assembly 31 is suspended within the support assembly 32, and an airflow channel 33 is formed between the heating assembly 31 and the support assembly 32. The airflow channel 33 connects the air inlet channel 321 and the heating chamber 3111.

[0043] During user aspiration, air from the external environment flows into the airflow channel 33 between the heating component 31 and the support component 32 through the air intake channel 321. The heating component 31 heats the flowing air to form a hot airflow. This hot airflow enters the heating chamber 3111 and flows axially from the end of the aerosol-generated product A, effectively improving heating uniformity and ensuring that the aerosol-generated product A is heated from all directions. Since the heating component 31 forms the heating chamber 3111, it can also transfer heat radially along the heating chamber 3111 to heat the aerosol-generated product A using circumferential heating, reducing local temperature differences. The combined method of airflow heating and circumferential heating effectively improves heating efficiency and heating uniformity, increasing the speed and uniformity of aerosol generation.

[0044] Please continue reading. Figure 3The support assembly 32 includes a support body 322, an upper cover 323, and a base 324. The upper cover 323 and the base 324 are respectively disposed at both ends of the support body 322. The upper cover 323 is provided with an insertion port 3211 for inserting the aerosol-generated product A into the heating chamber 3111. The upper cover 323 also has an insertion part 3231 that can be inserted into the interior of the support body 322. The inner wall of the support body 322 has a support protrusion 3221 that protrudes inward. The insertion part 3231 and the support protrusion 3221 cooperate to... The heating component 31 is clamped and fixed. An air inlet 3212 is provided on the insertion part 3231. This air inlet 3212 communicates with the insertion port 3211 and together form an air intake channel 321. The end of the heating component 31 furthest from the insertion port 3211 is spaced apart from the base 324. This design allows an airflow channel 33 to be formed between the heating component 31, the support body 322, and the base 324. This airflow channel 33 connects the air intake channel 321 and the heating chamber 3111, guiding the hot airflow. A schematic diagram of the airflow is shown below. Figure 3 As indicated by the middle arrow; on the other hand, this design reduces the contact area between the heating component 31 and the support component 32, thereby reducing heat loss due to heat conduction, which helps to improve heat utilization and reduce the power consumption of the generating equipment.

[0045] Please continue reading. Figure 3 , Figure 4 In some embodiments, the heating assembly 31 includes a heat conductor 311, a heat exchanger 312, and a heating element 313. The heat conductor 311 has a heating cavity 3111 for accommodating the aerosol-generating product A. The heating cavity 3111 has a first end 3112 and a second end 3113 along its own axis OO. The first end 3112 is the end near the insertion port 3211, used for inserting the aerosol-generating product A into the heating cavity 3111. The second end 3113 is the other end opposite to the first end 3112. At one end, a heat exchanger 312 is disposed inside the second end 3113; the heat exchanger 312 has a heat exchange channel 3121 and an adsorption channel 3122. The heat exchange channel 3121 penetrates the heat exchanger 312 and is used to heat the airflow flowing through the heat exchanger 312; the adsorption channel 3122 is distributed at intervals with the heat exchange channel 3121 and is used to adsorb liquid (including condensate) and prevent liquid from passing through; the heating element 313 is attached to the circumferential surface of the heat exchanger 312 and is used to generate heat after being energized.

[0046] Because the heat exchanger 312 has a heat exchange channel 3121, one end of which is connected to the airflow channel 33 and the other end is connected to the heating chamber 3111, the air can be heated when it flows through the heat exchanger 312. Since the air first passes through the heat conductor 311 during the airflow process, and the heat conductor 311 comes into contact with the heating element 313, part of the heat transferred to the heat conductor 311 can pre-heat the air, thereby increasing the temperature of the hot airflow and reducing heat loss. Because the heat exchanger 312 is provided with an adsorption channel 3122, when the aerosol generating product A is inserted into the heating chamber 3111, the end of the aerosol generating product A is positioned above the heat exchanger 312 (according to usage habits, the first end 3112 is the upper end, and the second end 3113 is the lower end). The condensate in the heating chamber 3111 and the aerosol generating product A flows to the heat exchanger 312 under the action of gravity and is adsorbed by the adsorption channel 3122. This can solve the problem of liquid leakage caused by the condensate continuing to flow downward along the heat exchanger 312 and damaging other components in the generating equipment diagram, thereby effectively improving the user experience.

[0047] In some embodiments, a flange 3114 is provided on the outer surface of the heat conductor 311. The flange 3114 can be engaged between the insertion portion 3231 and the support protrusion 3221, so that the heat conductor 311 is suspended in the support assembly 32. The heat exchanger 312 and the heating element 313 are disposed inside the second end 3113 of the heat conductor 311, and the heat exchanger 312 and the heating element 313 are also spaced apart from the base 324. The flange 3114 can be a ring structure, or multiple point-like or block-like structures. Multiple point-like or block-like structures are evenly arranged around the circumference of the heat conductor 311 so that the heat conductor 311 is uniformly stressed.

[0048] The heat conductor 311 can be cylindrical (including circular and near-circular), rectangular, polygonal, or other irregularly shaped, without much limitation. For example, the heat conductor 311 is cylindrical, forming a cylindrical heating cavity 3111 inside, which matches the shape of the aerosol generating product A, so that the aerosol generating product A can be uniformly and centrally inserted into the heating cavity 3111, and its matrix segment can be inserted in place, thereby ensuring uniform and sufficient heating of the aerosol generating product A.

[0049] The heat conductor 311 can be made of a material with good thermal conductivity, such as a metal or ceramic material. When the heat conductor 311 is made of a metal material, the heating element 313 and the heat conductor 311 are insulated from each other. For example, the heat conductor 311 is made of aluminum or an aluminum alloy. Aluminum or aluminum alloys have the advantages of being lightweight, having good thermal conductivity, and being easy to process, which helps to suspend the heat conductor 311 within the support assembly 32 and can reduce production costs.

[0050] In some embodiments, the pore size of the heat exchange channel 3121 is larger than that of the adsorption channel 3122. The heat exchange channel 3121 is a channel for air circulation, and its pore size is set to effectively ensure air passage. While the adsorption channel 3122 can also allow some air passage, it primarily utilizes capillary effect to adsorb liquids. Therefore, the pore size of the adsorption channel 3122 is much smaller than that of the heat exchange channel 3121. For example, the pore size of the heat exchange channel 3121 can be 50 μm-200 μm, and the pore size of the adsorption channel 3122 can be 5 μm-50 μm.

[0051] In some other embodiments, an oleophilic adsorption layer may be provided on the inner surface of the adsorption channel 3122. Since the aerosol condensate has a certain viscosity and its properties are similar to oil, providing an oleophilic adsorption layer on the inner surface of the adsorption channel 3122 can improve the adsorption effect. The oleophilic adsorption layer includes at least one of a porous ceramic layer, an activated carbon coating, or a polymer resin layer.

[0052] In one embodiment, the heating element 313 is etched from a porous metal felt 3123. Since the porous metal felt 3123 is a material made from extremely fine metal fibers (diameter accurate to micrometers) through non-woven fabrication, stacking, and high-temperature sintering, it has multiple micropores. Using the porous metal felt 3123 to etch the heating element 313 reduces its weight, preventing it from slipping out of the heat conductor 311 under gravity. Furthermore, the multiple micropores on the heating element 313 allow air to pass through and absorb condensate. In this embodiment, the etching pattern of the heating element 313 can be one of a spiral, a grid, or a honeycomb shape, further reducing its weight and increasing the heating area to improve heating efficiency.

[0053] In other embodiments, the heating element 313 may also be a hollow cylindrical shape, sleeved on the outside of the heat exchanger 312. The heating element 313 may also be made of heating wire, with a pattern of spiral, mesh, or honeycomb. The heating element 313 may also be a heating film or heating circuit, etc. To improve the stability of the connection between the heating element 313 and the heat exchanger 312, the heating element 313 is adhered to or embedded on the circumferential surface of the heat exchanger 312. For example, when the heating element 313 is a heating wire, the heating wire is set on the outer surface of the heat exchanger 312 by adhesive bonding, embedding, or other methods. In the embedded connection embodiment, a groove may be provided on the outer surface of the heat exchanger 312, and the heating wire is embedded in the groove. If necessary, it can be reinforced again with adhesive. The material used for adhesive bonding can be ceramic adhesive, which has good insulation and thermal conductivity, contributing to the insulation between the heating element 313 and the heat exchanger 312 and improving the thermal conductivity.

[0054] Please see Figure 5 and Figure 6In some embodiments, the heat exchanger 312 is constructed by stacking multiple porous metal felts 3123 along the axial direction of the heating cavity 3111 (the direction of the axis OO of the heating cavity, the same below). Each porous metal felt 3123 is provided with multiple heat exchange holes 3124. At least some of the heat exchange holes 3124 of the multiple porous metal felts 3123 are connected along the axial direction of the heating cavity 3111 to form a heat exchange channel 3121, so as to effectively ensure the passage of hot air. As mentioned above, the porous metal felt 3123 can be sintered during processing to form adsorption pores 3125 and heat exchange pores 3124. The heat exchange pores 3124 are used for airflow, and the adsorption pores 3125 can adsorb condensate using capillary effect. The heat exchanger 312 prepared by the porous metal felt 3123 can not only heat the airflow flowing through it, but also adsorb the condensate falling from the heating chamber 3111 and the aerosol generation product A, and prevent the condensate from flowing to other components, and can also prevent the liquid from blocking the heat exchange channel 3121.

[0055] At least some of the heat exchange holes 3124 are connected along the axial direction of the heating chamber 3111 to form a heat exchange channel 3121. This includes the heat exchange holes 3124 of two adjacent porous metal felts 3123 being aligned along the axial direction of the heating chamber 3111 and having their projections completely overlapping. It also includes the projections of the heat exchange holes 3124 of two adjacent porous metal felts 3123 being partially overlapping. For example, the heat exchanger 312 includes a first porous metal felt 3123, a second porous metal felt 3123, a third porous metal felt 3123 and a fourth porous metal felt 3123 arranged sequentially along the axial direction of the heating chamber 3111. The heat exchange holes 3124 of the first porous metal felt 3123 and the second porous metal felt 3123 are completely aligned and their projections completely overlap. The projected portions of the heat exchange holes 3124 of the second porous metal felt 3123 and the third porous metal felt 3123 overlap. The projected portions of the heat exchange holes 3124 of the third porous metal felt 3123 and the fourth porous metal felt 3123 also overlap. However, a connected heat exchange channel 3121 is also formed along the axial direction of the heating chamber 3111, through which airflow can also pass.

[0056] In one specific embodiment, the heat exchange holes 3124 of two adjacent porous metal felts 3123 are aligned along the axial direction of the heating chamber 3111 and their projections completely overlap. This reduces the resistance to airflow and the suction resistance during user suction, thereby accelerating the aerosol generation rate. The heat exchange hole 3124 can be straight or curved. A straight heat exchange hole 3124 can further reduce suction resistance, while a curved heat exchange hole 3124 can extend the heat exchange distance and increase the temperature of the hot airflow.

[0057] In some embodiments, the porous metal felt 3123 is also provided with a plurality of adsorption pores 3125, and the heat exchange pores 3124 are distributed in a ring array on the porous metal felt 3123. The adsorption pores 3125 are distributed in the gaps of the ring array. This design can make full use of the space between the heat exchange pores 3124, increase the number of adsorption pores 3125 in a limited space, improve the adsorption area and adsorption capacity of the porous metal felt 3123, and at the same time, do not affect the normal function of the heat exchange pores 3124. The ring array layout can make the adsorption pores 3125 evenly distributed around the heat exchange pores 3124, which can improve the uniformity of adsorption and avoid the situation of local over- or under-adsorption caused by uneven distribution of adsorption pores 3125. This is beneficial to improving the stability and consistency of the overall adsorption performance of the porous metal felt 3123.

[0058] In some embodiments, at least some of the adsorption pores 3125 of the plurality of porous metal felts 3123 are staggered along the axial direction of the heating chamber 3111, thereby blocking further liquid flow along the axial direction of the porous metal felts 3123 and effectively improving the adsorption and blocking effects. In some specific embodiments, the projections of the adsorption pores 3125 of two adjacent porous metal felts 3123 onto the axial direction of the heating chamber 3111 are completely staggered to effectively cut off the liquid passage, allowing the condensate to be adsorbed and stored in the heat exchanger 312.

[0059] When the heat exchanger 312 is made of porous metal felt 3123 and the heating element 311 is also etched from porous metal felt 31233, the heat exchanger 312 and the heating element 311 are insulated from each other to avoid the circuit between them affecting the heating effect.

[0060] Please see Figure 7 and Figure 8 In some embodiments, the heating assembly 31 further includes a heat insulation body 314, which is disposed between the heat exchanger 312 and the heat conductor 311. In the axial direction of the heating chamber 3111, the extension length of the heat insulation body 314 is greater than the extension length of the heat exchanger 312, thereby preventing direct contact between the end of the aerosol-generating product A and the heating element 313 and the heat exchanger 312. This reduces the instability of the end of the aerosol-generating product A and prevents the outer forming paper from generating impurities that affect the taste of the aerosol due to high-temperature combustion. By using the heat insulation body 314 to block direct contact between the end of the aerosol-generating product A and the heat exchanger 312, a buffer space can be formed between them, allowing for uniform hot airflow and ensuring a continuous flow of hot air from the end of the aerosol-generating product A, thus guaranteeing the continuity of suction.

[0061] In some embodiments, the heat insulation body 314 is made of ceramic material, which has good insulation properties, enabling it to insulate the heat conductor 311 and the heating element 313, and also has good thermal conductivity, enabling it to transfer heat from the heating element 313 to the heat conductor 311.

[0062] To prevent the heat exchanger 312 and the heating element 313 from falling out of the heat conductor 311, the heat insulation body 314 and the heat conductor 311 are interference-fitted, and the heat exchanger 312, the heating element 313 and the heat insulation body 314 are all interference-fitted.

[0063] Please continue reading. Figure 7 and Figure 8 In some embodiments, a first limiting structure 3141 and a second limiting structure 3142 are sequentially provided on the inner wall of the heat insulation body 314 along the axial direction of the heating cavity 3111. The two ends of the heat exchanger 312 along the axial direction of the heating cavity 3111 are respectively engaged with the first limiting structure 3141 and the second limiting structure 3142, so that the heat exchanger 312 is fixed inside the heat insulation body 314. The first limiting structure 3141 and the second limiting structure 3142 are both protruding structures used to limit and fix the heat exchanger 312. A first snap-fit ​​structure 3115 is provided on the inner wall of the heat conductor 311 at the second end 3113, and a second snap-fit ​​structure 3143 is provided on the outer wall of the heat insulation body 314 to cooperate with the first snap-fit ​​structure 3115. This allows the heat insulation body 314 to be fixedly installed inside the heat conductor 311, thereby preventing the heating assembly 31 from falling off due to gravity when it is suspended inside the support assembly 32. One of the first snap-fit ​​structure 3115 and the second snap-fit ​​structure 3143 can be a slot, and the other can be a protrusion. The protrusion is snapped into the slot to achieve fixation. In other embodiments, adhesive structures can also be provided between the heat conductor 311 and the heat insulation body 314, and between the heat insulation body 314 and the heat exchanger 312 to improve connection stability.

[0064] 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 heat conductor having a heating cavity for containing an aerosol-generating product; The heating chamber has a first end and a second end arranged opposite to each other along its own axis, the first end being used for inserting the aerosol-generating product into the heating chamber; A heat exchanger is disposed inside the second end; the heat exchanger has a heat exchange channel and an adsorption channel, the heat exchange channel penetrating the heat exchanger and used to heat the airflow flowing through the heat exchanger; the adsorption channel is spaced apart from the heat exchange channel and used to adsorb liquid and prevent liquid from passing through; and A heating element is attached to the circumferential surface of the heat exchanger and is used to generate heat when energized.

2. The heating assembly according to claim 1, characterized in that, The pore size of the heat exchange channel is larger than that of the adsorption channel; And / or, the inner surface of the adsorption channel is provided with an oleophilic adsorption layer, the oleophilic adsorption layer comprising at least one of a porous ceramic layer, an activated carbon coating, or a polymer resin layer.

3. The heating assembly according to claim 1, characterized in that, The heating element is formed by etching a porous metal felt; the etching pattern of the heating element is one of spiral, grid, or honeycomb.

4. The heating assembly according to claim 1, characterized in that, The heating element is attached or embedded on the circumferential surface of the heat exchanger.

5. The heating assembly according to claim 1, characterized in that, The heat exchanger is constructed by stacking multiple porous metal felts along the axial direction of the heating cavity; each porous metal felt is provided with multiple heat exchange holes and adsorption holes, the heat exchange holes are distributed in a ring array on the porous metal felt, and the adsorption holes are distributed in the gaps of the ring array; at least some of the heat exchange holes of the multiple porous metal felts are connected along the axial direction of the heating cavity to form the heat exchange channel, and at least some of the adsorption holes of the multiple porous metal felts are staggered along the axial direction of the heating cavity.

6. The heating assembly according to claim 5, characterized in that, The projections of the adsorption holes of two adjacent porous metal felts on the axial direction of the heating chamber are completely staggered.

7. The heating assembly according to claim 1, characterized in that, The heating assembly further includes a heat insulation body disposed between the heat exchanger and the heat conductor; in the axial direction of the heating chamber, the extension length of the heat insulation body is greater than the extension length of the heat exchanger.

8. The heating assembly according to claim 7, characterized in that, The inner wall of the heat insulation body is provided with a first limiting structure and a second limiting structure in sequence along the axial direction of the heating cavity. The two ends of the heat exchange body along the axial direction of the heating cavity are respectively snapped into the first limiting structure and the second limiting structure. The inner wall of the heat conductor located at the second end is provided with a first snap-fit ​​structure, and the outer wall of the heat insulation body is provided with a second snap-fit ​​structure that cooperates with the first snap-fit ​​structure.

9. A heating device, characterized in that, include: Support assembly, wherein the support assembly has an air intake channel; as well as The heating component as described in any one of claims 1-8, wherein the heating component is suspended inside the support component and an airflow channel is formed between the heating component and the support component, the airflow channel connecting the air intake channel and the heat exchange channel.

10. An aerosol generating device, characterized in that, It includes a power supply component and a heating device as described in claim 9, wherein the power supply component is used to supply power to the heating device.

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