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.The heating assembly comprises a supporting structure, a heating body, a porous body and a heat exchange body, the heating body is arranged in the supporting structure, a heating cavity is formed in the heating body, and an insertion opening is formed in the end, in the axial direction, of the heating cavity; an aerosol generating product is inserted into the heating cavity; the heat exchange body is arranged in the heating cavity and is far away from the insertion opening, the porous body is arranged on the side, facing the insertion opening, of the heat exchange body, and the end face, facing the insertion opening, of the porous body makes contact with the aerosol generating product. By means of heat conduction and airflow conduction, the temperature rising speed of an aerosol generating product can be increased, the amount of aerosol generated in unit time is increased, the consistency of the aerosol is enhanced, the heat utilization rate of the aerosol generating device is increased, and the energy consumption of the aerosol generating device is effectively reduced; aerosol and / or aerosol condensate flowing back in the heating cavity can be adsorbed through the capillary effect, and therefore leakage of the aerosol and / or aerosol condensate is avoided.

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 principle of heating without combustion to generate aerosols from aerosol generating products. Heating without combustion means that the aerosol generating products do not burn directly, but rather the aerosol generating matrix is ​​heated by an external heat source to produce aerosols.

[0003] Current aerosol generation devices use a single heat transfer method to transfer heat to the aerosol generated product, which affects the heating rate of the aerosol generated product, resulting in a smaller amount of aerosol produced per unit time and a reduced user experience. At the same time, this single heat transfer method also reduces the heat utilization rate of the aerosol generation device, resulting in increased energy consumption. Utility Model Content

[0004] This application provides a heating component and an aerosol generating device to solve the technical problems of reduced heat utilization, increased energy consumption, and decreased user experience.

[0005] One aspect of this application provides a heating assembly, comprising:

[0006] Support structure;

[0007] A heating element is disposed within the supporting structure. The heating element has a heating cavity for heating the aerosol generating product. One end of the heating cavity along its axial direction has an insertion port for inserting the aerosol generating product into the heating cavity.

[0008] A heat exchanger is disposed within the heating chamber and disposed away from the insertion port; the heat exchanger has a plurality of heat exchange holes extending through the heat exchanger along the axial direction of the heating chamber; and

[0009] A porous body is disposed on the side of the heat exchanger facing the insertion port, and the end face of the porous body facing the insertion port is used to contact the aerosol generating article.

[0010] In some optional embodiments, the porous body is provided with a first mounting portion, and the heat exchanger includes a heat exchange substrate and a first fixing portion that cooperates with the first mounting portion.

[0011] In some optional embodiments, the first mounting portion includes a first mounting hole disposed on the porous body, and the first fixing portion includes a first fixing protrusion disposed on the heat exchange substrate protruding toward the insertion port.

[0012] In some alternative embodiments, the first mounting hole is a blind hole, and the opening of the first mounting hole faces the heat exchanger; in the axial direction of the heating chamber, the extension length of the first mounting hole is less than the extension length of the first fixing protrusion.

[0013] In some optional embodiments, a plurality of heat exchange holes penetrate the heat exchange substrate along the axial direction of the heating cavity, and the plurality of heat exchange holes are arranged around the axis of the heat exchange substrate to form a plurality of heat exchange hole rows; the plurality of heat exchange hole rows are arranged at intervals from the outer edge of the heat exchange substrate toward the center to form an installation gap between two adjacent heat exchange hole rows; a limiting part is provided at one of the installation gaps, the limiting part protrudes toward the insertion port and is disposed on the heat exchange substrate, and the limiting part is spaced apart outside the mounting part.

[0014] In some alternative embodiments, the porous body comprises a plurality of porous metal felts stacked along the axial direction of the heating cavity; the porous metal felts are insulated from the heating element; and the micropores of the plurality of porous metal felts are at least partially connected in the axial direction of the heating cavity.

[0015] In some optional embodiments, the heating assembly further includes a reflector tube disposed outside the heating element and spaced apart from the heating element.

[0016] In some optional embodiments, the support structure includes a support body and a base. The support body is spaced apart from the heating element to form an airflow channel between the heating element and the support body. The support body is provided with an air inlet, which connects the airflow channel to the external environment. The base is inserted into the end of the support body away from the insertion port, and the base is spaced apart from the heat exchanger to form an airflow space between the base and the heat exchanger. The airflow space communicates with the airflow channel and with the heating cavity through the heat exchange hole.

[0017] In some optional embodiments, the heat exchanger has a second mounting portion at one end facing the base, and the base has a second fixing portion that cooperates with the second mounting portion.

[0018] Another aspect of this application 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.

[0019] According to the heating component and aerosol generating device in this embodiment, the heating component includes a heating element, a porous body, and a heat exchanger. The end face of the porous body is in contact with the aerosol generating product. Heat is conducted to the aerosol generating product from the circumference through the heating element, and heat is conducted from the end of the aerosol generating product through the porous body and the heat exchanger. At the same time, the heat exchanger is provided with multiple heat exchange holes and multiple micropores, which can be used for airflow conduction, further enhancing the heating rate of the aerosol generating product. By comprehensively utilizing heat conduction and airflow conduction, the heating rate of the aerosol generating product can be improved, the amount of aerosol generated per unit time can be increased, and the consistency before and after the aerosol generation process can also be enhanced. The setting of the heat exchanger and the porous body can also effectively utilize the waste heat of the heating element, thereby improving the heat utilization rate of the aerosol generating device and effectively reducing its energy consumption. The porous structure can also utilize capillary effect to adsorb aerosols and / or aerosol condensate flowing back into the heating chamber, thereby preventing leakage and solving the problem of aerosol generation device lifespan being affected by damage or corrosion to other components due to leakage of aerosols and / or aerosol condensate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the aerosol generating device in use in one embodiment.

[0021] Figure 2 This is a structural cross-sectional view of the aerosol generating device in use in one embodiment;

[0022] Figure 3 This is a cross-sectional view of the heating assembly in one embodiment;

[0023] Figure 4 This is a schematic diagram of the porous body structure in one embodiment;

[0024] Figure 5 This is a schematic diagram of the heat exchanger structure in one embodiment;

[0025] Figure 6 This is a cross-sectional view of the structure of the heat exchanger and the porous body in one embodiment;

[0026] Figure 7 This is a schematic diagram of the structure of the heating element in one embodiment;

[0027] Figure 8 This is a schematic diagram of airflow within the heating component in one embodiment.

[0028] Among them: 1. Aerosol generating device;

[0029] 10. Heating component; 11. Support structure; 111. Support body; 1111. Support protrusion; 1112. Air inlet; 112. Base; 1121. Second fixing part; 12. Heating element; 121. Heating cavity; 1211. Insertion port; 122. Heat pipe; 123. Heating part; 13. Heat exchanger; 131. Heat exchange substrate; 1311. Heat exchange hole; 1312. Installation gap; 132. First fixing part; 133. Limiting part; 134. Second mounting part; 14. Porous body; 141. Porous metal felt; 1411. First hole; 1412. Second hole; 142. First mounting part; 15. Airflow cavity; 16. Reflector tube; 17. Airflow channel; 18. Airflow space;

[0030] 20. Power supply components;

[0031] M, the axis of the heating chamber;

[0032] A. Aerosol-generated products. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] 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).

[0036] Embodiments of this application provide a heating component 10, which can be applied in an aerosol generating device 1, such as... Figure 1 and2 As shown. The aerosol generating apparatus 1 includes a power supply component 20, which provides the heating component 10 with the power required for operation, so that the heating component 10 provides a heat source for the aerosol generated product A after being powered on.

[0037] 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.

[0038] 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.

[0039] Please see Figure 3 The heating assembly 10 includes a support structure 11, a heating element 12, a heat exchanger 13, and a porous body 14. The support structure 11 can be understood as a collection of multiple structural components, which forms a cavity and assembly structure inside, providing a mounting base for the heating element 12, the heat exchanger 13, and the porous body 14. Specifically, the heating element 12 is disposed within the support structure 11, and the heating element 12 has a heating cavity 121 for heating the aerosol generating product A. The heating cavity 121 has an insertion port 1211 at one end along its axial direction (the direction of axis M, the same below) for inserting the aerosol generating product A into the heating cavity 121. The heat exchanger 13 is disposed within the heating cavity 121 and is disposed away from the insertion port 1211. The heat exchanger 13 has a plurality of heat exchange holes 1311 that penetrate the heat exchanger 13 along the axial direction of the heating cavity 121. The porous body 14 is disposed on the side of the heat exchanger 13 facing the insertion port 1211, and the end face of the porous body 14 facing the insertion port 1211 is used to contact the aerosol generating product A.

[0040] The porous body 14 and the heat exchanger 13 are disposed in the heating chamber 121, and the porous body 14 and the heat exchanger 13 are disposed at the end of the heating chamber 121 away from the insertion port 1211. The end face of the porous body 14 is in contact with the aerosol generating product A. Heat is conducted to the aerosol generating product A from the circumferential direction through the heating element 12, and heat is conducted from the end of the aerosol generating product A through the porous body 14 and the heat exchanger 13. This can increase the heating rate of the aerosol generating product A and increase the amount of aerosol generated per unit time. Meanwhile, the heat exchanger 13 is provided with multiple heat exchange holes 1311. After being heated, the heat exchanger 13 can heat the airflow passing through its heat exchange holes 1311. The heated airflow is then heated again after passing through the porous body 14, and finally flows to the aerosol-generating product A and is heated. Through the synergistic heating of the porous body 14 and the heat exchanger 13, the temperature of the airflow can be increased, further enhancing the heating rate of the aerosol-generating product A, and also enhancing the consistency before and after the aerosol generation process. The arrangement of the heat exchanger 13 and the porous body 14 can also effectively utilize the waste heat of the heating element 12, thereby improving the heat utilization rate of the aerosol generating device 1 and effectively reducing its energy consumption. Since the porous body 14 directly conducts heat to the end of the aerosol-generating product A, while the heat exchanger 13 mainly utilizes the airflow for heat conduction, the thermal conductivity of the porous body 14 is greater than that of the heat exchanger 13, further enhancing the heating rate of the aerosol-generating product A.

[0041] The porous body 14 has many micropores. The porous body 14 not only allows airflow to pass through to heat the aerosol to generate product A, but also uses capillary effect to adsorb the aerosol and / or aerosol condensate flowing back into the heating chamber 121, thereby preventing leakage. This solves the problem of aerosol generation device 1 being damaged or corroded by leakage of aerosol and / or aerosol condensate, which affects the lifespan of aerosol generation device 1.

[0042] The heating element 12 is a hollow circular or square tube structure. In the circular tube embodiment, the heating element 12 has openings at both ends, with one end forming an insertion port 1211, and the other end sequentially fitted with a porous body 14 and a heat exchanger 13. The porous body 14 and the heat exchanger 13 are sequentially arranged along the axial direction of the heating element 12 (the axial direction of the heating cavity 121) on the radial inner side of the heating element 12. The heat exchanger 13 and the heating element 12 can be integrally formed. Integral forming means that the heating element 12 and the heat exchanger 13 are made of the same material, such as ceramic. Furthermore, the heating element 12 and the heat exchanger 13 are manufactured in a single processing step, such as a single sintering process. This reduces the processing steps of the heating assembly 10 and facilitates its assembly in the entire aerosol generating device 1. Of course, the heat exchanger 13 can also be a separate structure from the heating element 12. In this case, both the heat exchanger 13 and the porous body 14 are interference-fitted with the heating element 12. The interference fit not only helps to stably fix the heat exchanger 13 and the porous body 14 inside the heating element 12, but also improves the heat transfer efficiency through their contact.

[0043] The porous body 14 can be a cylinder, or other irregularly shaped structures extending axially into the heating cavity 121. In some embodiments, the porous body 14 is a cylinder, and both end faces of the porous body 14 in the axial direction of the heating cavity 121 are planes perpendicular to the axial direction of the heating cavity 121. This facilitates the processing and shaping of the porous body 14 and helps reduce the mold cost of the heating assembly 10. For example, it helps simplify the mold structure during sintering. Of course, in other embodiments, the two end faces of the porous body 14 in the axial direction of the heating cavity 121 can be conical surfaces, inclined surfaces, arc surfaces, or other irregularly shaped surfaces.

[0044] In some embodiments, the micropores of the porous body 14 serve to adsorb aerosols and / or aerosol condensates, and also guide airflow. (See also...) Figure 4 The porous body 14 can be provided with a first hole 1411 and a second hole 1412. The diameter of the first hole 1411 is larger than the diameter of the second hole 1412, and the first hole 1411 penetrates the porous body 14 along the axial direction of the heating cavity 121. The second hole 1412 can penetrate the porous body 14 or be a blind hole. When the second hole 1412 is a blind hole, its opening faces the insertion port 1211. The porous body 14 is formed by a sintering process. The first hole 1411 and the second hole 1412 on it can be randomly distributed on the porous body 14, and the shape of the first hole 1411 and the second hole 1412 is not limited. They can be circular, elliptical, polygonal, or other irregular structures.

[0045] The heat exchanger 13 can also be a cylinder, or other irregularly shaped structures extending axially in the heating cavity 121. In some embodiments, the heat exchanger 13 is a cylinder, with heat exchange holes 1311 penetrating its two end faces axially in the heating cavity 121. The two end faces of the heat exchanger 13 can also be planes perpendicular to the axial direction of the heating cavity 121. In this case, the end face of the heat exchanger 13 facing the insertion port 1211 can fit against the end face of the porous body 14 facing the heat exchanger 13, and the end face of the heat exchanger 13 facing the insertion port 1211 can also be spaced apart from the end face of the porous body 14 facing the heat exchanger 13. In an embodiment where the end face of the heat exchanger 13 facing the insertion port 1211 and the end face of the porous body 14 facing the heat exchanger 13 are spaced apart, an airflow cavity 15 is formed between the porous body 14 and the heat exchanger 13. The airflow heated by the heat exchanger 13 flows through the airflow cavity 15 and then into the porous body 14, and is heated when passing through the micropores of the porous body 14, and then flows to generate aerosol product A.

[0046] In other embodiments, the heat exchanger 13 has an irregular shape. To simplify the production process of the heat exchanger 13, the heat exchanger 13 may include a heat exchange substrate 131, which is a cylinder. The heat exchange substrate 131 and the porous body 14 may be provided with a mating structure so that there is a connection between the heat exchanger 13 and the porous body 14, so that the two are stably connected and a heat conduction path is formed through the connection. Alternatively, there may be an airflow cavity 15 between the heat exchanger 13 and the porous body 14 to avoid the two being completely attached and affecting the airflow heat transfer effect.

[0047] The mating structure includes a first mounting portion 142 on the porous body 14 and a first fixing portion 132 on the heat exchanger 13 that mates with the first mounting portion 142. This helps to achieve a stable connection between the heat exchanger 13 and the porous body 14. One of the first mounting portion 142 and the first fixing portion 132 can be a mounting hole, and the other can be a mating fixing protrusion. The fixing protrusion is inserted into the mounting hole, which can not only connect the heat exchanger 13 and the porous body 14, but also increase the heat transfer area between them, and also form an airflow cavity 15 without affecting the flow of air.

[0048] In some embodiments, the first mounting portion 142 includes a first mounting hole disposed on the porous body 14, and the first fixing portion 132 includes a first fixing protrusion protruding toward the insertion port 1211 and disposed on the heat exchange substrate 131.

[0049] Please see Figure 5 and Figure 6In some embodiments, the first mounting hole is located in the middle of the porous body 14, and correspondingly, the first fixing protrusion is located in the middle of the heat exchange substrate 131. Both the first mounting hole and the first fixing protrusion extend along the axial direction of the heating cavity 121. The first mounting hole is a blind hole, and the opening of the first mounting hole faces the heat exchanger 13. The first fixing protrusion is inserted into the first mounting hole. This arrangement can isolate the heat exchanger 13 installed in the first mounting hole from the heating cavity 121 through the bottom wall of the first mounting hole. The bottom wall of the first mounting hole adsorbs the aerosol and / or aerosol condensate in the heating cavity 121, thereby preventing the aerosol and / or aerosol condensate from leaking along the mating gap between the first mounting hole and the first fixing protrusion.

[0050] Furthermore, in the axial direction of the heating chamber 121, the extension length of the first mounting hole is less than the extension length of the first fixed protrusion. After the first fixed protrusion is inserted into the first mounting hole, the bottom wall of the first mounting hole can limit the insertion limit position of the first fixed protrusion. The extension length of the first mounting hole is less than the extension length of the first fixed protrusion, which effectively ensures that the porous body 14 and the heat exchanger 13 are spaced apart to form the aforementioned airflow chamber 15.

[0051] Of course, in other embodiments, the first mounting hole may also penetrate through both end faces of the porous body 14 in the axial direction of the heating chamber 121. This allows for an interference fit between the first mounting hole and the first fixing protrusion during installation of the porous body 14, minimizing the clearance between them and preventing leakage of aerosols and / or aerosol condensate. Alternatively, the porosity of the second pore body 1412 around the first mounting hole can be increased to enhance the adsorption rate around the first mounting hole, reducing the possibility of aerosol and / or aerosol condensate leakage.

[0052] Please continue reading. Figure 5 and Figure 6Multiple heat exchange holes 1311 penetrate the heat exchange substrate 131 along the axial direction of the heating cavity 121. These multiple heat exchange holes 1311 are arranged around the axis of the heat exchange substrate 131 to form multiple rows of heat exchange holes 1311. The multiple rows of heat exchange holes 1311 are spaced apart from the outer edge to the center of the heat exchange substrate 131. This arrangement allows for the formation of installation gaps 1312 between adjacent rows of heat exchange holes 1311. A limiting part 133 is provided at one of the installation gaps 1312. The limiting part 133 protrudes towards the insertion port 1211 and is disposed on the heat exchange substrate 131. The limiting parts 133 are spaced apart. The spacer is positioned outside the mounting portion. This arrangement ensures that when the porous body 14 is installed, the end face of the porous body 14 facing the heat exchanger 13 abuts against the limiting portion 133, thereby forming the aforementioned airflow cavity 15 between the porous body 14 and the heat exchanger 13. At the same time, the limiting portion 133 is positioned outside the mounting portion, and a partial airflow cavity 15 is also formed between the limiting portion 133 and the mounting portion. The limiting portion 133 is positioned on the mounting gap 1312 between the rows of heat exchange holes 1311, so as not to affect the airflow in the heat exchange holes 1311 to the porous body 14, thereby effectively ensuring the heat transfer effect.

[0053] Furthermore, the multiple heat exchange holes 1311 can be arranged evenly and at intervals from the outer edge to the center of the heat exchange substrate 131. This arrangement helps to improve the uniformity of airflow distribution within the radial cross-section of the heating chamber 121, effectively preventing local overheating of the aerosol-generated product A and improving the temperature uniformity of the aerosol-generated product A. Of course, the multiple heat exchange holes 1311 can also be arranged in a rectangular array, which can also achieve uniform airflow distribution within the radial cross-section of the heating chamber 121.

[0054] In some embodiments, the porous body 14 includes a plurality of porous elements stacked along the axial direction of the heating chamber 121. These porous elements are porous metal felts 141 sintered from a metallic material. The micropores of the plurality of porous metal felts 141 are at least partially connected axially in the heating chamber 121, thereby providing an airflow path connecting the heat exchange holes 1311 and the heating chamber 121, effectively ensuring that the heating assembly 10 heats the aerosol to generate product A through airflow. The number of porous metal felts 141 is not limited; one, two, three, or more can be used. Figure 6 As shown, the porous metal felt 141 has three parts, and the micropores on the porous metal felt 141 are at least partially connected, so that the airflow flows from one end of the porous body 14 toward the heat exchanger 13 to the end toward the heating chamber 121 and flows into the aerosol generating product A.

[0055] In some embodiments, the heating element 12 may include a heating tube mainly made of conductive metal material or conductive ceramic, with openings at both ends. One end is provided with a heat exchanger 13 and a porous body 14 to form a heating cavity 121. The heating tube has a conductive part that is electrically connected to the power supply component 20. After being energized, the heating tube can directly generate heat as a heat source. By using the heating tube to wrap the aerosol-generated product A, not only can the aerosol-generated product A be prevented from falling out, but it can also directly contact the outer periphery of the aerosol-generated product A for heat conduction. Since the porous body 14 is formed by multiple porous metal felts 141, and the porous metal felts 141 also have certain conductivity, in order to avoid short circuits and ensure the normal operation of the heating component 10, the porous body 14 and the heating tube are insulated, for example, by filling with ceramic glue. This can achieve a stable connection between the porous body 14 and the heating tube, and also prevent short circuits between the two circuits.

[0056] In other embodiments, the heating element 12 may further include a heat-conducting pipe 122 and a heating portion 123 disposed on the inner or outer surface of the heat-conducting pipe 122, with the porous body 14 and heat exchanger 13 disposed inside the heat-conducting pipe 122. In this embodiment, the heat-conducting pipe 122 only has thermal conductivity and is made of a material with good thermal conductivity, such as a metal or ceramic material. When the heat-conducting pipe 122 is made of a metal material, the heating portion 123 and the heat-conducting pipe 122 are insulated from each other. When the heating portion 123 is disposed on the inner surface of the heat-conducting pipe 122, since the porous body 14 is disposed inside the heat-conducting pipe 122, the heating portion 123 and the porous body 14 are also insulated from each other.

[0057] The heating element 123 is disposed on the inner or outer surface of the heat pipe 122. It may include the heating element 123 being directly attached to the inner or outer surface of the heat pipe 122, or the heating element 123 being embedded in the inner or outer surface of the heat pipe 122.

[0058] Furthermore, the heating element 123 may include a heating wire, a heating circuit, or a heating film. When the heating element 123 is a heating wire, the heating wire may be wound in a spiral structure around the heat-conducting pipe 122 to increase the heating area and thus improve the heating efficiency. When the heating element 123 is a heating circuit, the heating element 123 is formed by printing a conductive coating paste on the inner or outer surface of the heat-conducting pipe 122. Please refer to [link / reference]. Figure 7 The heating element 12 includes a heat pipe 122 and a heating part 123 disposed on the outer surface of the heat pipe 122. The heating part 123 is a heating line printed on the surface of the heat pipe 122, which bends and extends on the surface of the heat pipe 122.

[0059] In some embodiments, the heating assembly 10 further includes a reflector tube 16, which is disposed outside the heating element 12 and spaced apart from it. The reflector tube reflects the heat radiated outwards by the heating element 12 back to the heating element 12 for utilization, reducing heat loss and fully utilizing the residual heat of the heating element 12. In this embodiment, the heating assembly 10 includes a heating element 12, a reflector tube 16, a heat exchanger 13, and a porous body 14, effectively combining three heat conduction methods: heat conduction, heat convection, and heat radiation. This significantly improves the heat utilization rate of the heating element 12, reduces energy consumption at the heating assembly 10, and rapidly increases the heating temperature of the aerosol-generating product A, resulting in consistent aerosol generation throughout the heating process. The reflector tube 16 can be made of a smooth, highly radiolucent material, such as aluminum foil. The thinner reflector tube 16 reduces heat loss. Please refer to [link to relevant documentation]. Figure 8 The reflector tube 16 is fitted to the inner wall of the support structure 11, which can effectively reduce the size of the heating assembly 10 perpendicular to the heating cavity 121 while ensuring that there is a sufficient reflection distance between the reflector tube 16 and the heating element 12.

[0060] The support structure 11 serves as the mating structure between the heating assembly 10 and other components of the aerosol generating device 1 (such as the housing assembly or power supply assembly 20), and also provides a mounting base for other structures of the heating assembly 10. The support structure 11 can be an integral structure extending approximately along the axial direction of the heating chamber 121. An opening is also provided at one end of the support structure 11 at the insertion port 1211. This facilitates the installation of the aerosol generating product A and other components in the heating assembly 10 (such as the heating element 12, the porous body 14, and the heat exchanger 13), and also helps to form an airflow path for the external environment to enter the heating chamber 121. The end of the support structure 11 furthest from the insertion port 1211 is a closed structure to effectively ensure that the airflow is heated after passing through the heat exchanger 13 and the porous body 14.

[0061] In some embodiments, the support structure 11 includes a support body 111 and a base 112. The support body 111 is disposed outside the heating element 12, and the base 112 is inserted into the end of the support body 111 away from the insertion port 1211. A support protrusion 1111 is provided on a certain inner wall of the support body 111 away from the base 112. The support protrusion 1111 is used to abut against the end of the heating element 12 that forms the insertion port 1211. To improve the fixing stability, the support protrusion 1111 and the heating element 12 can be fixed together by adhesive. The end of the heating element 12 away from the insertion port 1211 can abut against the end face of the base 112 facing the insertion port 1211, or it can be spaced apart from the end face of the base 112 facing the insertion port 1211. The support body 111, the base 112, and the heating element 12 cooperate to form an air passage structure. This air passage structure communicates with the heating chamber 121 in sequence through a heat exchange hole 1311, an airflow cavity 15, and a porous body 14. The air passage structure includes an air inlet 1112, an airflow channel 17, and an airflow space 18. The air inlet 1112 is connected to the external environment, the airflow channel 17 connects the air inlet 1112 and the airflow space 18, and the airflow space 18 is connected to the heat exchange hole 1311.

[0062] Please continue reading. Figure 8 In some specific embodiments, the support body 111 is spaced apart from the heating element 12 to form an airflow channel 17 between the heating element 12 and the support body 111. The support body 111 is provided with an air inlet 1112. The base 112 and the heat exchanger 13 are spaced apart to form an airflow space 18 between the base 112 and the heat exchanger 13. The airflow space 18 communicates with the airflow channel 17 and is connected to the heating chamber 121 through a heat exchange hole 1311. The air inlet 1112, the airflow channel 17, and the airflow space 18 form the aforementioned airflow structure. Figure 8 As shown in the figure, the arrows represent the airflow flow diagram in this embodiment. In this embodiment, the ends of the heating element 12 facing the base 112 and the heat exchanger 13 facing the base 112 are flush, so the heating element 12 is also spaced apart from the base 112. The heating element 12 is fixed by an interference fit with the heat exchanger 13 and by the support protrusion 1111 on the support body 111. Of course, the heat exchanger 13 can be disposed between the two ends of the heating element 12 to form an airflow space 18 between the heat exchanger 13, the heating element 12, and the base 112. The heating element 12 or the base 112 is provided with vent holes that connect the airflow space 18 and the airflow channel 17.

[0063] In an embodiment where the ends of the heating element 12 and the heat exchanger 13 facing the base 112 are flush, to effectively ensure the stable fixation of the heating element 12 and the heat exchanger 13, a second mounting portion 134 is provided at one end of the heat exchanger 13 facing the base 112, and a second fixing portion 1121 that cooperates with the second mounting portion 134 is provided on the base 112. One of the second mounting portion 134 and the second fixing portion 1121 can also be a mounting hole, and the other a fixing protrusion. In some embodiments, please continue reading. Figure 8 The second mounting portion 134 is a second mounting hole, which extends axially along the heating cavity 121 and is located in the middle of the heat exchanger 13. The second mounting hole is a blind hole, and its axial extension from the heat exchanger base 131 to the first fixing portion 132 within the heating cavity 121 is part of the structure. The second fixing portion 1121 is a second fixing protrusion, extending axially along the heating cavity 121 and located in the middle of the base 112. This arrangement simplifies the assembly process of the heating assembly 10 and reduces the axial dimensions of the heating assembly 10 within the heating cavity 121. To effectively ensure the formation of the airflow space 18, the extension length of the second fixing portion 1121 is greater than the extension length of the second mounting portion 134 in the axial direction of the heating cavity 121. Alternatively, a limiting structure can be provided between the second mounting portion 134 and the second fixing portion 1121 to further ensure the formation of the airflow space 18.

[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: Support structure; A heating element is disposed within the supporting structure. The heating element has a heating cavity for heating the aerosol generating product. One end of the heating cavity along its axial direction has an insertion port for inserting the aerosol generating product into the heating cavity. A heat exchanger is disposed within the heating chamber and is located away from the insertion port; the heat exchanger has a plurality of heat exchange holes that penetrate the heat exchanger along the axial direction of the heating chamber. as well as A porous body is disposed on the side of the heat exchanger facing the insertion port, and the end face of the porous body facing the insertion port is used to contact the aerosol generating article.

2. The heating assembly according to claim 1, characterized in that, The porous body is provided with a first mounting part, and the heat exchanger includes a heat exchange substrate and a first fixing part that cooperates with the first mounting part.

3. The heating assembly according to claim 2, characterized in that, The first mounting portion includes a first mounting hole disposed on the porous body, and the first fixing portion includes a first fixing protrusion protruding toward the insertion port and disposed on the heat exchange substrate.

4. The heating assembly according to claim 3, characterized in that, The first mounting hole is a blind hole, and the opening of the first mounting hole faces the heat exchanger; in the axial direction of the heating chamber, the extension length of the first mounting hole is less than the extension length of the first fixing protrusion.

5. The heating assembly according to claim 4, characterized in that, Multiple heat exchange holes penetrate the heat exchange substrate along the axial direction of the heating cavity, and the multiple heat exchange holes are arranged around the axis of the heat exchange substrate to form multiple heat exchange hole rows; the multiple heat exchange hole rows are arranged at intervals from the outer edge of the heat exchange substrate to the center to form an installation gap between two adjacent heat exchange hole rows; a limiting part is provided at one of the installation gaps, the limiting part protrudes towards the insertion port and is disposed on the heat exchange substrate, and the limiting part is spaced apart outside the mounting part.

6. The heating assembly according to any one of claims 1-5, characterized in that, The porous body includes a plurality of porous metal felts stacked along the axial direction of the heating cavity; the porous metal felts are insulated from the heating element; and the micropores of the plurality of porous metal felts are at least partially connected in the axial direction of the heating cavity.

7. The heating assembly according to claim 1, characterized in that, The heating assembly also includes a reflector tube, which is disposed outside the heating element and spaced apart from the heating element.

8. The heating assembly according to claim 1, characterized in that, The support structure includes a support body and a base. The support body is spaced apart from the heating element to form an airflow channel between the heating element and the support body. The support body is provided with an air inlet, which connects the airflow channel to the external environment. The base is inserted into the end of the support body away from the insertion port, and the base is spaced apart from the heat exchanger to form an airflow space between the base and the heat exchanger. The airflow space is connected to the airflow channel and is connected to the heating chamber through the heat exchange hole.

9. The heating assembly according to claim 8, characterized in that, The heat exchanger has a second mounting part at one end facing the base, and the base has a second fixing part that cooperates with the second mounting part.

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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