Heating assembly and aerosol generation apparatus

Abstract

This application relates to the technical field of aerosol generation. This application provides a heating assembly equipped with a heating element and an aerosol generating apparatus. [Solution] The heating element includes a heating element base and a heating circuit. The heating element base has a main body and a bottom wall, and the main body and bottom wall enclose each other to form a housing cavity for housing an aerosol product. An inlet and outlet are provided at one end away from the bottom wall of the housing cavity for inserting and removing the aerosol product into and out of the housing cavity. The inlet and outlet are used for inserting and removing the aerosol product into and out of the housing cavity. The heating circuit is located in the bottom wall and is used to generate heat when energized. The heating assembly of this application reduces the heating area of ​​the aerosol product and lowers the temperature of the aerosol inhaled by the user.

Description

Technical Field

[0004] ,

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[0005]

[0001] (Cross - reference to related applications) This application claims priority to Chinese Utility Model Registration No. 2024221240682 filed on August 30, 2024, Chinese Utility Model Registration No. 202422131894X filed on August 30, 2024, Chinese Utility Model Registration No. 2024226355714 filed on October 30, 2024, Chinese Utility Model Registration No. 2024230723136 filed on December 12, 2024, and Chinese Utility Model Registration No. 202423162917X filed on December 20, 2024, and the entire contents of these applications are incorporated herein by reference.

[0002] This application relates to the technical field of aerosol generation, specifically to a heating assembly and an aerosol generation device.

Background Art

[0003] An aerosol generation device is a device that heats an aerosol product to form an aerosol for a user to inhale. The aerosol generation device can heat the aerosol product by a heating assembly. The interior of the heating assembly has a receiving cavity, and an inlet - outlet is provided at one end of the receiving cavity. The aerosol product can be inserted into and withdrawn from the receiving cavity through the inlet - outlet.

[0004] However, the heating member of the heating assembly surrounds the outer periphery of the aerosol product, and the heating assembly heats the circumferential direction of the substrate segment of the aerosol product. With such a heating method, the heating area is large, and it may cause the user's mouth to be burned by the inhaled aerosol.

Summary of the Invention

[0005] This application provides a heating assembly and an aerosol generation device that can solve the problem of burning the user's mouth when inhaling an aerosol.

[0006] To solve the above technical problems, this application provides a heating assembly equipped with a heating element. The heating element includes a heating element substrate and a heating circuit.

[0007] The heating element base includes a main body and a bottom wall provided at one end of the main body. The main body and the bottom wall enclose each other to form a containment cavity for housing an aerosol product. An inlet is provided at one end of the containment cavity away from the bottom wall, and this inlet is used to insert and remove the aerosol product from the containment cavity.

[0008] The aforementioned heating circuit is located in the bottom wall and is used to generate heat when electricity is passed through it.

[0009] In one embodiment, the heating element substrate is provided with a plurality of flow guide grooves on the side of the heating element substrate facing the housing cavity and communicating with the inlet and outlet, the flow guide grooves being used to guide the gas from the inlet and outlet to the end of the aerosol product.

[0010] The main body has a tubular structure and has a first end and a second end that are positioned opposite each other. The entrance is located at the first end of the main body, and the bottom wall is connected to the second end of the main body.

[0011] The flow guide groove is provided in the main body.

[0012] In one embodiment, a positioning portion is provided on the side of the bottom wall facing the containment cavity, and the positioning portion is used to abut against the end of the aerosol product and to form a gap between it and the bottom wall when the aerosol product is inserted into the containment cavity.

[0013] One end of the flow guide groove, away from the inlet and outlet, communicates with the gap, and the gap and the flow guide groove form an airflow passage.

[0014] In one embodiment, the inner wall of the main body is provided with a plurality of recesses that are equally spaced around the center of the main body and constitute the flow guide groove.

[0015] In one embodiment, the heating assembly further comprises a mounting frame assembly. The heating element base is suspended within the mounting frame assembly. The heating element base is provided with a connection portion connected to the mounting frame assembly.

[0016] In one embodiment, a first intake passage communicating with the outside is provided within the mounting frame assembly, and a second intake passage is provided within the housing cavity, with the first and second intake passages communicating with each other. The second intake passage includes the flow guide groove and the gap.

[0017] In one embodiment, the heating circuit is located on the side of the bottom wall that is away from the housing cavity.

[0018] In one embodiment, the heating assembly further comprises a lid provided on the side of the bottom wall away from the housing cavity. The heating circuit is provided between the lid and the bottom wall and is at least co-fired with the lid to form an integral part of it.

[0019] In one embodiment, a fixed cavity is formed surrounding the side of the bottom wall that is away from the housing cavity.

[0020] The heating element and the lid are fired together to form a co-fired ceramic member, and the co-fired ceramic member is fixed within the fixed cavity.

[0021] In one embodiment, the heating assembly further comprises a heat conductor positioned in the bottom wall and connected to the bottom wall and the heating circuit, thereby fixing the heating circuit to the bottom wall.

[0022] In one embodiment, the heating assembly further comprises a mounting frame assembly and a reflective member. The heating element base is located inside the mounting frame assembly, and the reflective member is located between the heating element base and the mounting frame assembly.

[0023] In one embodiment, the thickness of the reflective member is 0.2 mm or less, and / or the reflective member is a reflective thermal insulation film made of a low-emissivity material.

[0024] This application further provides a heating assembly comprising a mounting frame assembly, a heat conduction member, a heat generating member, and a reflecting member. The mounting frame assembly is provided with an air intake, and the heat conduction member and the heat generating member are disposed inside the mounting frame assembly. The heat conduction member has a hollow structure with open ends, and the heat generating member is disposed at an opening of the heat conduction member away from the air intake and, by surrounding the heat conduction member, forms a housing cavity for housing an aerosol product, and an airflow passage is provided inside the housing cavity that connects the air intake to the inside of the aerosol product. The heat generating member is used to generate heat when energized, and the heat conduction member is used to absorb at least a portion of the heat from the heat generating member and to transfer at least a portion of the absorbed heat into the housing cavity. The reflecting member is disposed inside the support assembly and outside the heat conduction member and is used to reflect the heat radiated outward by the heat conduction member and / or the heat generating member.

[0025] In one embodiment, the heating member includes a heat transfer portion and a heating portion. The heating portion is a heating region, a heating film, or a heating circuit provided on the heat transfer portion, and at least a part of the structure of the heat transfer portion is connected to the heat conducting member.

[0026] This application further provides an aerosol generating device comprising a power supply assembly and the heating assembly described above, wherein the power supply assembly supplies power to the heating assembly.

[0027] This application provides a heating assembly provided with a heating element. The heating element includes a heating element substrate and a heating circuit. The heating element substrate has a main body portion and a bottom wall, and the main body portion and the bottom wall enclose to form a receiving cavity. Since the heating circuit is disposed on the bottom wall of the heating element substrate, the air flow is heated at the bottom wall of the heating element substrate to become a hot air flow, and the hot air flow flows into the bottom wall of the aerosol product and is used to heat the aerosol product. That is, in the heating process of this application, since the position with the highest temperature of the hot air flow is near the bottom wall of the heating element substrate, the temperature of the bottom wall of the substrate segment of the aerosol product is the highest, which is different from the fact that the outer peripheral temperature of the entire substrate segment in several related technologies is all high. Therefore, with the heating assembly of this application, the heating area of the aerosol product is reduced, and the temperature of the aerosol sucked by the user is lowered.

Brief Description of the Drawings

[0028] <​​​​​​​​​​​​This is a schematic diagram of another perspective of the heating element provided in one embodiment of this application. [Figure 6] This is a schematic diagram of another perspective of the heating element provided in one embodiment of this application. [Figure 7] This is a schematic diagram of the heating assembly in another embodiment. [Figure 8] This is a schematic diagram of the exploded configuration of the heating assembly in another embodiment. [Figure 9] This is a cross-sectional view of the heating assembly in another embodiment. [Figure 10] This is a schematic diagram of the heating assembly in another embodiment. [Figure 11] This is a schematic diagram of another embodiment, showing the configuration without the heating assembly installed. [Figure 12] This is a cross-sectional view of the heating assembly in another embodiment. [Figure 13] This is a schematic diagram of the aerosol generating device in another embodiment. [Figure 14] This is a schematic diagram of the aerosol generating device in another embodiment. [Figure 15] This is a schematic diagram of the heating assembly and aerosol product provided in another embodiment. [Figure 16] This is a cross-sectional view of Figure 15. [Figure 17] Figure 16 is a exploded view of the three-dimensional structure. [Figure 18] Figure 16 is a schematic diagram of the airflow direction. [Figure 19] Figure 15 is a schematic diagram of the heating element. [Figure 20] This is a schematic diagram of the configuration from another perspective of Figure 19. [Figure 21] Figure 19 is a exploded view of the three-dimensional structure. [Figure 22] Figure 15 is a cross-sectional view of the heating element. [Figure 23] This is a cross-sectional view of the configuration of an aerosol generating device in another embodiment. [Figure 24] Figure 23 is a cross-sectional view of the heating assembly. [Figure 25] Figure 23 is a schematic diagram of the heat-generating component. [Figure 26] This is a schematic diagram of a reflective member in one embodiment. [Figure 27] This is a cross-sectional view of the heating element in another embodiment. [Figure 28] This is an exploded view of the heating assembly in another embodiment. [Figure 29] This is a cross-sectional view of the configuration shown in Figure 28. [Figure 30] This is a magnified view of area A in Figure 29. [Modes for carrying out the invention]

[0029] The present application will be described in more detail below with reference to the drawings through specific embodiments. Similar components in different embodiments have the same corresponding component number. The following detailed description includes many details to make the present application easier to understand. However, those skilled in the art will readily understand that some features may be omitted or replaced by other components, materials, or methods under different circumstances. In some cases, some operations related to the present application are not illustrated or described herein to avoid over-explanation of the core parts of the application, but those skilled in the art will not need these related operations to be described in detail and will be able to fully grasp the related operations based on the description in the specification and general knowledge in the art.

[0030] Furthermore, the features, operations, or characteristics described in this specification can be combined in any suitable manner to form various embodiments, and the operating steps in each embodiment can also be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the specification and drawings are for illustrative purposes only and do not imply any essential configurations and / or sequences.

[0031] The numbering of parts in this specification, such as "Part 1," "Part 2," etc., is used solely to distinguish the described objects and has no order or technical meaning. Unless otherwise specified, "connection" and "linking" in this application include both direct and indirect connections (linking).

[0032] Terms such as "parallel" and "perpendicular" are not absolutely rigorous definitions in a mathematical sense, but are defined based on current construction standards. Some deviations, such as "approximately parallel" or "approximately perpendicular," are acceptable. For example, A and B being parallel means that A and B are parallel or approximately parallel, and the angle between A and B may be between 0° and 10°. For example, A and B being perpendicular means that A and B are perpendicular or approximately perpendicular, and the angle between A and B may be between 80° and 100°. Directional terms used in the embodiments of this application, such as "up," "inside," "outside," and "side," are merely directions to which the drawings are referred. Therefore, the directional terms used are for the purpose of better and clearer description and understanding of the embodiments of this application, and do not suggest or imply that the referred devices or elements necessarily have a specific orientation or must be configured and operated in a specific orientation, and should therefore not be understood as limiting the embodiments of this application.

[0033] Referring to Figures 1 to 6, one embodiment of the present application provides a heating assembly 103 (also called a “heating unit,” and the same applies hereinafter) and an aerosol generator 100. The aerosol generator 100 comprises a housing 101, a power supply assembly 102, and a heating assembly 103, both of which are located within the housing 101. Here, the heating assembly 103 comprises a heating element 10 and a mounting frame assembly 20. The heating element 10 is connected to the mounting frame assembly 20, which is connected to the housing 101, and the power supply assembly 102 is used to supply power to the heating element 10. An aerosol product 200 (also called an “aerosol substrate” or “aerosol generating substrate”) is located within the heating element 10, which, when energized, generates heat that heats the aerosol product 200 located inside it, thereby generating an aerosol. The aerosol product 200 may be used as a consumable for the aerosol generator. Generally, the aerosol product 200 may include a substrate segment for containing a grass substrate, a cooling segment for cooling the aerosol generated by the substrate segment, and a filter segment capable of filtering the aerosol. The user can inhale the aerosol generated by the substrate segment by sucking through the filter segment. In this embodiment, the aerosol generator 100 may or may not include the aerosol product 200.

[0034] Referring to Figures 2 to 5, the heating element 10 includes a heating element base 11 and a heating circuit 12. The heating element base 11 is provided with a housing cavity 111 and an inlet / outlet 112 communicating with the housing cavity 111. The housing cavity 111 is used to house the aerosol product 200, and the inlet / outlet 112 is used to allow the aerosol product 200 to pass through and be inserted into and out of the housing cavity 111. The heating circuit 12 is located in the region of the heating element base 11 opposite the inlet / outlet 112 and is used to generate heat when energized. Here, a power supply assembly 102 is used to supply power to the heating circuit 12, and the heating element base 11 is thermally conductive. The heat generated when the heating circuit 12 is energized is transferred to the housing cavity 111 via the heating element base 11, thereby heating the aerosol product 200 located in the housing cavity 111.

[0035] According to the above technical solution, by providing a containment cavity 111 and an inlet / outlet 112 communicating with the containment cavity 111, the aerosol product 200 can enter and exit the containment cavity 111 through the inlet / outlet 112. The aerosol product 200 is usually columnar in shape, and when the aerosol product 200 is inserted into the containment cavity 111 through the inlet / outlet 112, its end corresponds to the region of the heating element base 11 facing the inlet / outlet 112. By arranging the heating circuit 12 in the region of the heating element base 11 facing the inlet / outlet 112, the heat generated when the heating circuit 12 is energized can rapidly heat the gas located at the end of the aerosol product 200. Since the heating circuit 12 is located only in the region facing the inlet / outlet 112 of the heating element base 11 (i.e., the heating circuit 12 is located locally on the heating element base 11), the heating element 10 is heated locally, and the thermal energy loss of the heating element 10 can be reduced compared to a technical solution for overall heating (i.e., the heating circuit 12 is located over the entire region of the heating element base 11).

[0036] In practical implementation, the heating element substrate 11 may be manufactured from a highly thermally conductive material such as an aluminum alloy, copper, aluminum nitride, aluminum oxide, or ceramic. By manufacturing the heating element substrate 11 using a highly thermally conductive material, the thermal conductivity of the heating element substrate 11 is improved, and the heat generated by the heating circuit 12 is transferred to the housing cavity 111 as much as possible, thereby reducing thermal energy loss.

[0037] Referring to Figures 3 to 5, the heating element base 11 includes a main body 113 and a bottom wall 114. The main body 113 has a tubular structure and has a first end and a second end that are opposite each other. An inlet / outlet 112 is located at the first end of the main body 113, and the bottom wall 114 is connected to the second end of the main body 113. The main body 113 and the bottom wall 114 enclose each other to form a housing cavity 111. In specific implementation, the diameter of the main body 113 is adapted to the aerosol product 200 so that the aerosol product 200 is stably housed in the housing cavity 111.

[0038] In some embodiments, the heating element base 11 may be named "cup body," and based on the function of the main body 113 and the bottom wall 114 together enclosing it to form a housing cavity 111, and the main body 113 has a tubular structure, the heating element base 11 also has a heat conduction function, and the main body 113 may be named "side wall" or "heat conductor." The bottom wall 114 may be named "bottom" or "heat conduction part," and the housing cavity 111 is used to house and heat the aerosol product 200, and the housing cavity 111 may be named "heating cavity."

[0039] Here, the heating circuit 12 is located on the bottom wall 114. When the aerosol product 200 is inserted into the containment cavity 111, the ends of the aerosol product 200 correspond to the bottom wall 114, and by positioning the heating circuit 12 on the bottom wall 114, the gas located at the ends of the aerosol product 200 can be rapidly heated. Also, when the aerosol generator 100 is in use, the first end of the main body 113 is located above the second end. That is, the bottom wall 114 is located below, and heat moves upward. Therefore, by positioning the heating circuit 12 on the bottom wall 114, the heat generated when the heating circuit 12 is energized moves upward and is sufficiently used to heat the aerosol product 200, improving the heat utilization rate, reducing thermal energy loss, and decreasing the heating area of ​​the aerosol product 200, thus lowering the temperature of the aerosol inhaled by the user.

[0040] In one embodiment, the heating circuit 12 is located on the side of the bottom wall 114 that faces away from the housing cavity 111. That is, the heating circuit 12 is located on the outside of the bottom wall 114. When implemented specifically, the heating circuit 12 is electrically connected to a power supply assembly 102, which supplies power to the heating circuit 12 so that it generates heat. Placing the heating circuit 12 on the outside of the bottom wall 114 is advantageous for achieving the electrical connection between the heating circuit 12 and the power supply assembly 102, and also makes operation of the heating circuit 12 on the outside of the bottom wall 114 more convenient and faster for assembly workers. Of course, in other embodiments, the heating circuit 12 may be located on the side of the bottom wall 114 facing the housing cavity 111, or it may be located inside the bottom wall 114.

[0041] Referring to Figures 2, 4, and 6, the heating circuit 12 includes a circuit body 121 and two heating ends 122. The heating ends 122 are located on opposite sides of the bottom wall 114, and both ends of the circuit body 121 are connected to the two heating ends 122, with the circuit body 121 being curved. Here, the two heating ends 122 are used to connect to electrical connection pins (not shown), thereby achieving an electrical connection between the heating circuit 12 and the power supply assembly 102. In specific implementation, the curved arrangement of the circuit body 121 allows the heating circuit 12 to cover the entire bottom wall 114, so that all parts of the housing cavity 111 corresponding to the bottom wall 114 can receive heat, and furthermore, each part of the ends of the aerosol product 200 can receive heat simultaneously. Note that the shape formed by the curvature of the circuit body 121 is not limited and may be the shape shown in Figure 6 or other shapes. In this embodiment, the heating circuit 12 is configured as one set. In other embodiments, it should be understood that the heating circuit 12 may be configured as at least two sets.

[0042] In one embodiment, the heating circuit 12 is arranged on the heating element substrate 11 by a thick-film printing method. When implemented in practice, this may be metal thick-film printing or ceramic thick-film printing.

[0043] Regarding printing the heating circuit 12 onto the heating element base 11 using a thick-film printing method, due to the characteristics of the thick-film printing method itself, the heating circuit 12 exhibits a layered structure and is formed as an integrated structure with the heating element base 11. Compared to a technical solution in which the heating circuit 12 is separately placed on the heating element base 11, the assembly step is eliminated, the assembly efficiency of the heating element 10 is improved, and the robustness of the connection between the heating circuit 12 and the heating element base 11 is also improved due to the integrated structure.

[0044] Those skilled in the art should understand that the shape and heating method of the heating circuit 12 are not limited, and for example, the heating method of the heating circuit 12 may be resistance heating or electromagnetic induction heating, and the shape of the heating circuit 12 may be snake-like, circular, rectangular, or other shapes. The heating circuit 12 may take the form of a heating wire, a heating sheet, etc., and the shape of the heating circuit 12 may be circular or flat.

[0045] In some embodiments, the material of the heating circuit 12 may be a metal such as tungsten or platinum. The heating circuit 12 may be configured as an iron-nickel alloy heating circuit or a titanium heating circuit. By using a metal material with good chemical stability at high temperatures, such as tungsten or platinum, as the heating circuit 12, it is possible not only to adapt to the heating temperature in the co-firing process, but also to maintain stable heat generation during use and contribute to improving the heating effect.

[0046] In some embodiments, the heating circuit 12 may be a heating element, a heating component, a heating layer, or a heating section, depending on its heating function.

[0047] Referring to Figures 3 and 4, the heating element base 11 is provided with a plurality of flow guide grooves 115 (also called "intake grooves" or "first passages," and the same applies hereinafter) on the side facing the housing cavity 111, communicating with the inlet / outlet 112. The inlet / outlet 112 is also used for gas to pass through and flow into the flow guide grooves 115, and the flow guide grooves 115 are used to guide the gas from the inlet / outlet 112 to the end of the aerosol product 200. Here, the flow guide grooves 115 are provided on the side of the main body 113 facing the housing cavity 111. That is, the flow guide grooves 115 are provided on the inside of the main body 113. With this arrangement, the airflow from outside the heating element 10 can pass through the inlet / outlet 112 and the flow guide grooves 115 in sequence and flow to the end of the aerosol product 200. When implemented, as the airflow passes through the flow guide groove 115, the heating element base 11 can heat the flowing airflow, thereby causing the temperature of the gas flowing to the end of the aerosol product 200 to be higher than the temperature of the gas outside the heating element.

[0048] Referring to Figures 3 and 4, a positioning portion 116 (also called a "support projection" or "support portion," and the same applies hereinafter) is provided on the side of the bottom wall 114 facing the containment cavity 111. That is, the positioning portion 116 is provided on the inside of the bottom wall 114, and the positioning portion 116 is used to contact the end of the aerosol product 200 and, when the aerosol product 200 is inserted into the containment cavity 111, to form a gap 13 (also called an "air guide gap" or "gap," and the same applies hereinafter) between the positioning portion 116 and the bottom wall 114, and the structure of the gap 13 and the flow guide groove 115 forms an airflow passage. One end of the flow guide groove 115 away from the inlet / outlet 112 communicates with the gap 13, and the flow guide groove 115 can guide the airflow from the inlet / outlet 112 into the gap 13. With this arrangement, the inlet / outlet 112, flow guide groove 115, and gap 13 constitute an airflow passage, allowing airflow to flow from outside the heating element 10, sequentially through the inlet / outlet 112 and flow guide groove 115 to the gap 13, and then enter the aerosol product 200 from its end through the gap 13. The positioning unit 116 may be provided on the main body 113.

[0049] When implemented, as the airflow passes through the flow guide groove 115 and gap 13, the heating element base 11 heats the passing airflow, thereby heating the cold airflow into a hot airflow. In other words, the airflow that enters the aerosol product 200 is a hot airflow, which in turn heats the aerosol product 200.

[0050] Here, the diameter of the main body 113 matches the diameter of the aerosol product 200, so that when the aerosol product 200 is placed in the containment cavity 111, the inside of the main body 113 comes into contact with the outer circumference of the aerosol product 200. In this way, the main body 113 can heat the airflow flowing through the flow guide groove 115, while also directly heating the outer circumference of the aerosol product 200 by contacting it, thereby improving the heating efficiency for the aerosol product 200.

[0051] In one embodiment, the main body 113 is provided with a plurality of flow guide grooves 115 on its interior side, and the plurality of flow guide grooves 115 are arranged at equal intervals along the circumferential direction of the main body 113. As a result, the airflow flowing from the flow guide grooves 115 into the gaps 13 can be uniformly dispersed and uniformly heated along the circumferential direction of the aerosol product 200, and the main body 113 can also uniformly and directly heat the circumferential direction of the aerosol product 200.

[0052] Referring to Figures 2 to 4, the heating element base 11 is positioned at the first end of the main body 113 and further includes a connector 117 for connecting to the mounting frame assembly 20 of the heating assembly 103. The bottom wall 114 is connected to the second end of the main body 113, and by positioning the heating circuit 12 in the bottom wall 114, the heating circuit 12 is positioned at the second end of the main body 113, while the connector 117 is positioned at the first end of the main body 113, allowing for a relatively long distance between the heating circuit 12 and the connector 117. Because of the distance between the heating circuit 12 and the mounting frame assembly 20, most of the heat generated by the heating circuit 12 is transferred to the corresponding containment cavity 111 during the process of being transferred to the mounting frame assembly 20, and is further used to heat the aerosol product 200. In this way, the amount of heat absorbed by the mounting frame assembly 20 is reduced, and thermal energy loss is further reduced.

[0053] In one embodiment, the connection portion 117 includes a flange 1171 (also referred to as a “convex edge,” “second engagement projection,” or “projection,” and the same applies hereinafter), the flange 1171 being provided to surround the main body portion 113 in the circumferential direction. In specific implementation, the flange 1171 is connected to the mounting frame assembly 20, thereby connecting the heating element 10 to the mounting frame assembly 20.

[0054] Referring to Figures 3 and 4, the mounting frame assembly 20 includes a first sleeve 21 (also called the “top cover” or “lid,” and so forth hereafter) and a second sleeve 22 (also called the “mounting tube” or “support tube,” and so forth hereafter). The first sleeve 21 includes a coaxially arranged first tube 211 and a first internal shrink tube 212 (also called the “first engagement projection”), the first internal shrink tube 212 shrinking inward from one end or inside of the first tube 211. The second sleeve 22 includes a coaxially arranged second tube 221 and a second internal shrink tube 222, the second internal shrink tube 222 shrinking inward from one end or inside of the second tube 221. The first tube 211 is connected to one end of the second tube 221, and the first internal shrink tube 212 is inserted into the second tube 221 and extends toward the second internal shrink tube 222. The heating element 10 is connected between the first internal shrink tube 212 and the second internal shrink tube 222 and suspended within the second sleeve 22. In specific implementation, the connection part 117 is connected between the first internal shrink tube 212 and the second internal shrink tube 222, and the connection part 117 is connected to the mounting frame assembly 20, so that the heating element 10 is installed in a suspended manner, which is advantageous in reducing thermal energy loss.

[0055] In this embodiment, the connecting portion 117 is provided as a flange 1171, the flange 1171 is supported by the second internal shrink tube 222, and the first internal shrink tube 212 is located above the flange 1171. That is, the flange 1171 is interposed between the first internal shrink tube 212 and the second internal shrink tube 222, and this arrangement improves the robustness of the connection between the heating element 10 and the mounting frame assembly 20.

[0056] Referring to Figures 2 and 3, the heating assembly 103 further comprises a base 30 (also called the "base") connected to one end of the second cylinder 221 away from the first cylinder 211. The first sleeve 21, the second sleeve 22, and the base 30 all provide insulation, further reducing thermal energy loss. In addition, in the heating assembly 103, the heating element 10 is suspended within the mounting frame assembly 20.

[0057] In one embodiment, referring to Figures 7 to 14, the heating assembly comprises a heating element base 100a, a lid 150, and a heating circuit 200a.

[0058] The heating element base 100a may be understood as the structural body of the heating assembly, and the lid 150 is used to fix the heating circuit 200a to the heating element base 100a. The lid 150 is located on the side of the bottom wall 120 away from the housing cavity 130, and the heating circuit 200a is located between the bottom wall 120 and the lid 150 and is at least co-fired with the lid 150 to form an integral part of it.

[0059] By positioning the heating circuit 200a between the bottom wall 120 and the lid 150, the heat generated by the heating circuit 200a is conducted to the containment cavity 130 via the bottom wall 120, thereby heating the aerosol product 600 inside the containment cavity 130. Since the heating circuit 200a is co-fired with at least the lid 150 and integrated into it, the position of the heating circuit 200a is restricted by at least the coupling with the lid 150, and when the heating assembly is heated, the heating circuit 200a is less likely to separate due to the difference in the degree of thermal expansion between the lid 150 and the bottom wall 120, contributing to improved operational stability and extended service life of the heating assembly.

[0060] In one embodiment, referring to Figures 7 to 9, the bottom wall 120, the heating circuit 200a, and the lid 150 are co-fired and integrated, thereby improving the fixing effect of the bottom wall 120 and the lid 150 to the heating circuit 200a and contributing to reducing the risk of separation of the heating circuit 200a.

[0061] In some embodiments, to improve the heating efficiency of the heating assembly and reduce heat loss, the thermal conductivity of the bottom wall 120 and / or lid 150 is 15 W / (m·K) or higher. That is, the bottom wall 120 and / or lid 150 may be a high thermal conductivity ceramic material with a thermal conductivity of 15 W / (m·K) or higher, such as aluminum nitride, silicon carbide, or aluminum oxide. Those skilled in the art will understand that, depending on the needs of co-firing, the same or similar material may be used for the bottom wall 120 and lid 150 to improve the degree of matching between the bottom wall 120 and lid 150 and to avoid stress problems caused by too large a difference in the thermal expansion coefficients of the materials used.

[0062] In another embodiment, referring to Figures 10 and 11, a fixed cavity 140 is formed on the side of the bottom wall 120 away from the housing cavity 130, and the heating circuit 200a and the lid 150 are co-fired to form a co-fired ceramic member 160, which is fixed within the fixed cavity 140. In another embodiment, to reduce the risk of separation between the heating circuit 200a and the lid 150, the heating circuit 200a may be co-fired inside the lid 150 as needed.

[0063] By co-firing the heating circuit 200a and the lid 150 as a co-firing ceramic member 160, and by fixing the co-firing ceramic member 160 within the fixed cavity 140, the heating circuit 200a is fixed within the fixed cavity 140, making it less prone to expansion and separation.

[0064] To reduce the thermal resistance of the heating assembly, the heating element base 100a and the lid 150 can be manufactured using materials with high thermal conductivity. In some embodiments, the materials of the main body 110, the bottom wall 120, and the lid 150 may all be ceramic materials with a thermal conductivity of 15 W / (m·K) or higher, such as aluminum nitride, silicon carbide, or aluminum oxide. The co-fired ceramic member 160 formed by co-fired firing may be adhesively fixed within the fixing cavity 140 using a high-temperature resistant ceramic adhesive.

[0065] In some other embodiments, the material of the bottom wall 120 and the main body 110 may be a metallic material with a thermal conductivity of 15 W / (m·K) or higher, such as copper or an aluminum alloy.

[0066] In one embodiment, referring to Figures 10 and 11, the metal body portion 110 extends away from the housing cavity 130 to form a fixing projection 111a, which surrounds and forms a fixing cavity 140, and the co-fired ceramic member 160 can be engaged and fixed to the fixing cavity 140 by the fixing projection 111a.

[0067] For example, the main body 110 may be provided with a fixing projection 111a that extends away from the housing cavity 130, and the fixing projection 111a is provided with a protruding portion 1111 that extends away from the housing cavity 130. After the co-fired ceramic member 160 is installed in the fixing cavity 140, the protruding portion 1111 is bent in a direction toward the co-fired ceramic member 160, and the co-fired ceramic member 160 is fixed to the fixing cavity 140 by the bent protruding portion 1111.

[0068] Those skilled in the art will understand that the method by which the co-fired ceramic member 160 is fixed within the fixed cavity 140 may be bonding, welding, engagement, screw connection, or other connection methods, provided that they meet the design and usage needs.

[0069] To further improve the heat transfer effect of the co-fired ceramic member 160 to the bottom wall 120, in one embodiment, a heat conductive layer may be placed on the surface of the co-fired ceramic member 160 closer to the bottom wall 120, and the thermal conductivity of the heat conductive layer is greater than that of the co-fired ceramic member 160. In some embodiments, the heat conductive layer may be a heat conductive plating layer, such as a copper plating layer, plated on the surface of the co-fired ceramic member 160. In some other embodiments, the heat conductive layer may be a heat conductive coating, such as a graphite coating, applied to the surface of the co-fired ceramic member 160 and co-fired and hardened. Those skilled in the art will understand that the method of forming the heat conductive layer and the material used are not limited, and that it is sufficient to improve the heat transfer effect of the co-fired ceramic member 160 to the bottom wall 120.

[0070] In some further embodiments, referring to Figure 12, a lead wire 210 is connected to the heating circuit 200a, which penetrates from the cover 150 to supply power to the heating circuit 200a via the lead wire 210, and when current passes through the heating circuit 200a, the heating circuit 200a generates heat based on the Joule effect. In other embodiments, the lead wire 210 may penetrate from the main body 110 or other members. Conduction can also be performed by using contacts or other conductive elements instead of the lead wire 210. The conductive element only needs to have an electrical connection point that is exposed to the outside of the heating element substrate 100a or the cover 150.

[0071] In one embodiment, a heating circuit 200a may be arranged in the main body 110 in order to increase the heating area of ​​the heating element base 100a. In some embodiments, the main body 110 and the heating circuit 200a arranged within it may be co-fired and integrated. For specific methods, please refer to the arrangement method in which the heating circuit 200a is co-fired between the bottom wall 120 and the lid 150, and the explanation will be omitted here.

[0072] In one embodiment, referring to Figures 9 to 14, a second intake passage 131 (referred to as the "airflow passage" or "airway" in the above embodiment, and used to guide airflow into the heating cavity, and the same applies hereinafter) is provided in the cavity wall of the housing cavity 130. The second intake passage 131 communicates with an opening in the housing cavity 130 (also referred to as the "inlet" or "outlet," and the same applies hereinafter), and the second intake passage 131 is used to allow airflow from outside the heating assembly to flow into the housing cavity 130 and into the aerosol product 600 housed in the housing cavity 130. By providing the second intake passage 131, the heating assembly can heat the aerosol product 600 by hot airflow, contributing to improved heating uniformity and heating efficiency.

[0073] For example, the main body 110 is provided with a first projection 112a (corresponding to a "protruding rib" or "protrusion 3212" in Figure 29) on the side facing the housing cavity 130, and multiple first projections 112a are installed at intervals along the circumferential direction of the housing cavity 130, so that flow guide grooves 1311 communicating with the opening of the housing cavity 130 can be formed between adjacent first projections 112a, and the area formed by the encirclement of each first projection 112a can be used to insert an aerosol product 600. A second projection 121a (i.e., the "positioning part" in the above embodiment, and so on hereinafter) is provided on the side of the bottom wall 120 facing the containment cavity 130. The second projection 121a may be provided one or multiple at intervals. When the aerosol product 600 is inserted into the containment cavity 130, a gap 1312 is formed between the aerosol product 600 and the bottom wall 120. The gap 1312 communicates with the flow guide groove 1311, and together they form a second intake passage 131. As a result, after the airflow passes through the opening of the containment cavity 130 and enters the second intake passage 131, it is heated during the flow process, and the resulting hot airflow re-enters and heats the aerosol product 600, improving heating uniformity and heating efficiency.

[0074] As those skilled in the art will understand, the first projection 112a may be provided only on the cavity wall of the housing cavity 130 on the side closer to the opening (as shown in Figure 12), or only on the cavity wall of the housing cavity 130 on the side further from the opening, or the first projection 112a may be provided along the entire cavity wall of the housing cavity 130 to form a flow guide groove 1311. The gap 1312 may be formed by a groove provided in the bottom wall 120. In short, the arrangement of the second intake passage 131 is not limited as long as it can meet the design and usage needs.

[0075] In one embodiment, referring to Figures 13 and 14, the housing 300 is provided with a mounting frame assembly 500 having a mounting cavity 540 for mounting a heating assembly, and when the heating assembly is mounted in the mounting cavity 540, the outside of the heating assembly has an isolation space 550. The isolation space 550 can form an air insulation layer for the heating assembly, thereby reducing heat loss during heating of the heating assembly and contributing to improved heating efficiency.

[0076] In some embodiments, referring to Figures 12 to 14, the housing 300 is provided with a substrate insertion port 310, and a mounting frame assembly 500 is mounted inside the housing 300 corresponding to the substrate insertion port 310. The mounting frame assembly 500 includes a second sleeve 510, bases 520 attached to both ends of the second sleeve 510, and a first sleeve 530, and the second sleeve 510, bases 520 and first sleeve 530 together enclose a mounting cavity 540. The first sleeve 530 is provided with a through hole 531 corresponding to the substrate insertion port 310, and when the heating assembly is mounted in the mounting cavity 540, the housing cavity 130 communicates with the substrate insertion port 310 through the through hole 531. The second sleeve 510, the base 520, and the first sleeve 530 may all be made of materials with low thermal conductivity, such as PEEK (polyetheretherketone) and PPSU (polyphenylsulfone), thereby improving heat retention and reducing heat loss.

[0077] Here, the inner wall of the mounting cavity 540 may be provided with a positioning projection 541 along the circumferential direction of the mounting cavity 540, and a flange 113a is provided on the circumferential side of the opening of the housing cavity 130 of the main body 110. The flange 113a is locked to the positioning projection 541, thereby allowing the heating assembly to be hung inside the mounting cavity 540 and forming an isolation space 550 between the outside of the heating assembly and the cavity wall of the mounting cavity 540. The first sleeve 530 may further have a positioning portion 532, which cooperates with the positioning projection 541 to clamp the flange 113a and restrict the flange 113a, thereby fixing the heating assembly.

[0078] In some embodiments, referring to Figure 8, the second sleeve 510 and base 520 may be replaced with a mounting cup.

[0079] In one further embodiment, a heat radiation reflective layer may be provided on the cavity wall of the mounting cavity 540 to improve the heat retention effect on the heating assembly. For example, aluminum foil may be provided on the inner wall of the second sleeve 510 as a heat radiation reflective layer.

[0080] As those skilled in the art will understand, the power supply assembly 400 (also called the "energy supply unit," and the same applies hereinafter) is used to supply energy to the heating circuit 200a, and depending on the difference in the heating principle of the heating circuit 200a, the power supply assembly 400 may have various arrangements. For example, if the heating circuit 200a is a resistive heating circuit, the power supply assembly 400 may be a battery cell or a collection of a battery cell and related components such as a circuit board, and can supply electrical energy to the heating circuit 200a. If the heating circuit 200a is an electromagnetic induction heating circuit, the power supply assembly 400 may be a collection of an electromagnetic coil and a battery cell, or a collection of an electromagnetic coil and related components such as a battery cell and a circuit board, thereby providing an induced magnetic field to the heating circuit 200a via the electromagnetic coil, and the heating circuit 200a can generate heat via induced eddy currents. In short, as long as the energy necessary for heating can be supplied to the heating circuit 200a, the arrangement of the power supply assembly 400 is not limited.

[0081] Referring to Figures 15 to 22, in some embodiments, the heating assembly 20a includes a mounting frame assembly 21a, a heating circuit 22a, and a heat conductor 23. The mounting frame assembly 21a includes a first sleeve 213 and a second sleeve 212a, and a first intake passage 211a communicating with the outside is provided within the mounting frame assembly. The heating circuit 22a includes a heating element base 221a, a heating element 222a, and a conductor 223. A second intake passage 2215 (corresponding to the airflow passage in the above embodiments, and so on) communicating with the first intake passage 211a is provided within the housing cavity 2213, and the second intake passage 2215 is provided in the main body 2211. Here, the main body 2211 may be used to form the second intake passage 2215, or the main body 2211 may be used together with other parts to form the second intake passage 2215. The second intake passage 2215 has one end communicating with the first intake passage 211a and the other end communicating with the containment cavity 2213. As a result, as shown in Figure 18, when a user inhales the aerosol product 10a, the external airflow can enter the aerosol product 10a located in the containment cavity 2213 via the first intake passage 211a and the second intake passage 2215.

[0082] The heat conductor 23 is positioned on the bottom wall 2212 of the heating element base 221a and connected to the bottom wall 2212 and the heating circuit 22a, and is used to fix the heating circuit 22a to the bottom wall 2212. The heat conductor 23 can fix the heating circuit 22a, and the heat conductor 23 may be made of a material with high thermal conductivity. For example, the heat conductor 23 may be set as a ceramic adhesive heat conductor 23, thereby allowing the energy from the heating circuit 22a to be rapidly conducted to the second intake passage 2215 and the airflow to be heated.

[0083] Since the heating circuit 22a is located on the bottom wall 2212 of the heating element base 221a, the airflow is heated at the bottom wall 2212 of the heating element base 221a to become a hot airflow, which flows into the bottom of the aerosol product 10a and is used to heat the aerosol product 10a. In other words, in the heating process of this application, the highest temperature of the hot airflow is near the bottom wall 2212 of the heating element base 221a, so the temperature at the bottom of the substrate segment of the aerosol product 10a is the highest, unlike in some related technologies where the periphery temperature of the entire substrate segment is high. Therefore, the heating assembly 20a of this application reduces the heating area of ​​the aerosol product 10a and lowers the temperature of the aerosol inhaled by the user.

[0084] In one embodiment, as shown in Figures 16 and 17, the heat conductor 23 encloses the heating circuit 22a, sealing the heating circuit 22a within the heat conductor 23. By enclosing the heating circuit 22a with the heat conductor 23, it is possible to prevent the heating circuit 22a from being damaged during use and to facilitate fixing the heating circuit 22a to the bottom wall 2212 of the heating element base 221a. During the manufacture of the heating assembly 20a, the heating circuit 22a is placed on the bottom wall 2212 of the heating element base 221a, then the heating circuit 22a is sealed using a liquid ceramic adhesive, and then sintered, thereby sintering the ceramic adhesive together with the heating circuit 22a and the heating element base 221a.

[0085] As shown in Figure 19, in one embodiment, the heat conductor 23 and the heating circuit 22a are located within the housing cavity 2213 and on the bottom wall 2212, or, as shown in Figures 20 to 22, the main body 2211 and the bottom wall 2212 further enclose each other to form a mounting space 2216, which is located on the side of the bottom wall 2212 away from the housing cavity 2213. The heat conductor 23 and the heating circuit 22a are located within the mounting space 2216. When the heat conductor 23 and the heating circuit 22a are located within the housing cavity 2213, the heating circuit 22a is closer to the second airflow passage, which can improve the heat transfer efficiency of the hot airflow. When the heat conductor 23 and the heating circuit 22a are arranged within the mounting space 2216, the heat from the heating circuit 22a is first transferred to the heating element base 221a, thereby improving contact heat transfer between the heating element base 221a and the aerosol product 10a. These two arrangement methods can be selected as needed.

[0086] In one embodiment, as shown in Figure 19, the main body 2211 has a heat conduction portion 2218 for contacting the side surface of the aerosol product 10a. The heat conduction portion 2218 is used for positioning the aerosol product 10a and for heat transfer to the aerosol product 10a by contact. The second intake passage 2215 includes a flow guide groove 2215a and a communication portion 2215b, and the heat conduction portion 2218 is used to define the flow guide groove 2215a. That is, the heat conduction portion 2218 may form the flow guide groove 2215a, or the heat conduction portion 2218 may form the flow guide groove 2215a together with other structures. The intake end of the flow guide groove 2215a is positioned close to the inlet / outlet 2214 and communicates with the first intake passage 211a, while the exhaust end of the flow guide groove 2215a is positioned close to the bottom wall 2212. As a result, the airflow in the first intake passage 211a can enter the flow guide groove 2215a from its intake end, flow towards the exhaust end of the flow guide groove 2215a, and further flow to the bottom wall 2212 of the heating element base 221a. The airflow is heated into a hot airflow by the heating circuit 22a of the bottom wall 2212 before entering the aerosol product 10a from its bottom surface.

[0087] By positioning the intake end of the flow guide groove 2215a close to the inlet / outlet 2214 and the exhaust end of the flow guide groove 2215a close to the bottom wall 2212, the airflow passes through the outer circumference of the outer body portion 2211 of the aerosol product 10a as it passes through the flow guide groove 2215a, and is heated by the heat conduction section 2218 as it enters the flow guide groove 2215a, thereby preheating the aerosol product 10a from the outside. The heat conduction section 2218 can not only perform contact heat transfer to the aerosol product 10a, but can also preheat the airflow in the flow guide groove 2215a, and by combining the methods of hot airflow and contact heat transfer, the efficiency of heating the aerosol product 10a is higher and the energy utilization rate is higher.

[0088] As shown in Figure 19, in one embodiment, the heat conduction section 2218 includes a plurality of protruding ribs. The protruding ribs extend from the side of the main body 2211 closer to the inlet 2214 to the side of the main body 2211 further away from the inlet 2214, and the plurality of protruding ribs are spaced apart along the circumferential direction of the main body 2211, thereby forming flow guide grooves 2215a between adjacent protruding ribs, preferably the plurality of protruding ribs are uniformly arranged along the circumferential direction. One end of the protruding rib closer to the central axis of the heating assembly 20a is used to contact the side surface of the aerosol product 10a, preferably the contact surface between the protruding rib and the side surface of the aerosol product 10a is an arc-shaped surface, the arc-shaped surface can adhere better to the cylindrical outer surface of the aerosol product 10a, and the contact between the protruding rib and the aerosol product 10a is surface contact, which, compared to point contact, can avoid the generation of locally excessive heat on the outer surface of the aerosol product 10a.

[0089] In one embodiment, the heating assembly 20a may further include a clamping member 24 attached to the mounting frame assembly 21a. Preferably, the clamping member 24 is attached to the first sleeve 213 and is used to clamp the aerosol product 10a, thereby preventing the aerosol product 10a from moving during use.

[0090] Referring to Figures 23 to 27, in some embodiments, the heating assembly 300a comprises a mounting frame assembly 310a, a heating element 320, and a reflector 330. The mounting frame assembly 310a is provided with an air intake 311 that can communicate with the external environment, and when a user inhales, external air enters the interior of the heating assembly 300a through the air intake. The heating element 320 is located inside the mounting frame assembly 310a and includes a heat conduction member 321 (corresponding to the main body in the above embodiments) and a heating element 322 (corresponding to the combination of the heating circuit and bottom wall in the above embodiments). The heat conduction member 321 is a hollow structure with open ends, and the heating element 322 is located at an opening of the heat conduction member 321 away from the air intake 311 and, together with the heat conduction member 321, forms a containment cavity 323 for containing an aerosol product. The containment cavity 323 is provided with an airflow passage 324 that connects the air intake to the inside of the aerosol product. The heat-generating element 322 is used to generate heat when energized, and the heat-conducting element 321 is used to absorb at least a portion of the heat from the heat-generating element 322 and to transfer at least a portion of the absorbed heat into the containment cavity 323. The containment cavity 323 is used to contain the aerosol product. After the heat from the heat-generating element 322 is transferred to the containment cavity 323, the aerosol product can be heated by heat conduction through contact and by the hot airflow. The reflective element 330 is located inside the mounting frame assembly 310a and outside the heat-conducting element 321, and is used to reflect the heat radiated outward by the heat-conducting element 321 and / or the heat-generating element 322.

[0091] In this application, "inward" refers to the direction toward the center of the housing cavity 323, and "outward" refers to the direction toward the direction away from the center of the housing cavity 323.

[0092] Because thermal radiation is present in the heat conduction member 321 and the heat generating member 322, some heat may be radiated outward, and the direction of transfer of this portion of heat is opposite to the direction of transfer to the containment cavity 323, and therefore it cannot be fully utilized by the containment cavity 323. That is, it is understood that it is absorbed by the aerosol product and cannot be used, thereby causing heat loss and increasing the power consumption of the power supply assembly 200.

[0093] To solve the above problems, according to this application, a reflective member 330 is arranged on the outside of the heat conduction member 321, and the arrangement of the reflective member 330 allows the heat transferred to it to be reflected back in the reverse direction. That is, the heat radiation outward from the heat conduction member 321 is reflected by the heat conduction member 321 and then finally transferred to the aerosol product via the heat conduction member 321, and similarly, the heat radiation outward from the heat generating member 322 is reflected by the heat generating member 322 and then finally transferred to the aerosol product via the heat conduction member 321. As a result, heat loss due to heat radiation is reduced, the heat utilization rate is improved, the power consumption of the power supply assembly 200 is reduced, and the operating cost of the aerosol generating device is reduced.

[0094] The arrangement of the airflow passage 324 allows external air to be heated as it passes through the containment cavity 323, forming a hot airflow. This hot airflow enters the interior of the aerosol product, achieving airflow heating. The aerosol product is also contained within the containment cavity 323 and heated by heat conduction with the heat conduction member 321. By employing both heat conduction and airflow heating, heating efficiency is improved, effectively ensuring that the aerosol product is heated sufficiently and uniformly.

[0095] Since the heat-generating element 322 is positioned at one end of the heat-conducting element 321 as a heat source, the heat source is positioned at the end of the aerosol product in accordance with the structural characteristics of the aerosol generator in use (with the aerosol product incorporated). This increases the heat at the end of the aerosol product, accelerating aerosol generation, and also lowers the temperature at the end closest to the exhaust port 311, thus preventing burns to the user.

[0096] In some embodiments, the thermal conductive member 321 is made of a material with high thermal conductivity and the ability to transmit infrared radiation, such as aluminum nitride, silicon carbide, or aluminum oxide. Preferably, the thermal conductive member 321 has a thermal conductivity > 15 W / (m·K) and an emissivity > 0.5, so that the thermal conductive member 321 can sufficiently absorb the heat from the heat generating member 322 and the heat transmitted through the radiation reflected by the reflecting member 330, thereby improving the heat utilization rate of the aerosol generating device.

[0097] In some embodiments, a material with high thermal conductivity and low emissivity, such as an aluminum alloy or silver, is used as the reflector 330. Preferably, the thermal conductivity of the reflector 330 is >15 W / (m·K) and the emissivity is <0.3. The low emissivity causes the internal temperature of the reflector 330 to rise, more heat is transferred to the aerosol product, and further improves the heat utilization rate of the aerosol generator.

[0098] In some embodiments, the heat-generating element 322 may be a highly thermally conductive material such as an aluminum alloy, aluminum nitride, silicon carbide, aluminum oxide, or stainless steel. Preferably, the thermal conductivity of the heat-generating element 322 is >15 W / (m·K), which allows more heat to be transferred into the heat-conducting element 321 or the containment cavity 323, and further, more heat to be transferred to the aerosol product, thereby improving the heat utilization rate of the aerosol generator.

[0099] In some embodiments, the heat conduction member 321 and the reflector member 330 are arranged in a non-contact structure, and a certain structural gap exists between the heat conduction member 321 and the reflector member 330. As a result, the heat absorbed by the heat conduction member 321 is transferred to the reflector member 330 only in the form of thermal radiation, and the heat can be reflected back to the heat conduction member 321 using the reflector member 330. This effectively reduces heat loss due to thermal radiation, allows the heat generated by the heat generating member 322 to be utilized to the maximum extent in the aerosol product, and improves the heat utilization rate.

[0100] In some embodiments, the surface of the reflective member 330 facing the heat conduction member 321 (which may be understood as the inner surface of the reflective member 330) is a glossy surface structure, and by utilizing the specular reflection of the glossy surface structure, the heat reflection performance of the reflective member 330 can be effectively improved, thereby reflecting back more heat radiated from the heat conduction member 321 and / or the heat generating member 322, and reducing heat loss in the reflective member 330.

[0101] Naturally, in some other embodiments, the reflective member 330 may include a reflective film or reflective layer positioned toward the heat conductive member 321. Both the reflective film and the reflective layer may be made of a highly reflective material; for example, the reflective layer may be formed by coating its inner surface with a highly reflective material.

[0102] Referring to Figure 27, in some embodiments, the heating element 322 includes a heat transfer section 3221 and a heating element 3222. The heating element 3222 and the positioning section 3213 are positioned opposite two sides of the heat transfer section 3221, and at least a portion of the structure of the heat transfer section 3221 is connected to the heat conduction member 321, thereby increasing the contact area, improving heat transfer efficiency, and improving heat utilization rate.

[0103] In some embodiments, the heating element 3222 is a heating region, heating film, or heating circuit 3223 provided on the heat transfer element 3221, and as shown in Figure 27, the heating element 3222 is a heating circuit 3223 located on the heat transfer element 3221. To reduce heat at the edges of the aerosol product, the heating element 3222 is located on a side of the heat transfer element 3221 away from the housing cavity 323.

[0104] In some embodiments, the heating region, heating film, or heating circuit 3223 may be made of a resistive material and fixed to the heat transfer section 3221 by coating, fitting, or bonding.

[0105] In some embodiments, the heat conduction member 321 and the heat generating member 322 are configured as an integrated structure, which simplifies the assembly process, improves assembly efficiency, and effectively ensures contact between the heat conduction member 321 and the heat generating member 322, thereby improving heat conduction efficiency.

[0106] In some embodiments, the reflector 330 extends along the axial direction of the heat conduction member 321, with one end away from the exhaust port 311 in contact with a portion of the structure of the heat generating member 322, so that the reflector 330 can reflect the heat radiated outward by the heat conduction member 321 in the reverse direction, so that the heat acts on the air or aerosol product in the containment cavity 323 after passing through the heat conduction member 321.

[0107] In some other embodiments, referring to Figure 26, the reflector 330 includes a first reflector 331 and a second reflector 332. The first reflector 331 is coaxial with the heat conductor 321 and is positioned to surround the outside of the heat conductor 321, while the second reflector 332 is connected to the first reflector 331 and is positioned outside the heat generating member 322. The first reflector 331 is used to reflect heat radiated outward by the heat conductor 321, and the second reflector 332 is used to reflect heat radiated outward by the heat generating member 322. The arrangement of the first reflector 331 and the second reflector 332 can improve heat reflection efficiency and reduce heat loss.

[0108] In some embodiments, referring to Figure 27, the inner wall of the heat conduction member (corresponding to the main body) 321 is provided with a plurality of recesses 3211, which are equally spaced around the center of the heat conduction member 321 and constitute flow guide grooves (also called first ventilation segments). Protrusions 3212 are formed between adjacent recesses 3211, and these protrusions 3212 abut against the outer wall surface of the aerosol product to achieve clamping and fixing of the aerosol product. The uniform arrangement of the protrusions 3212 is also advantageous for centering (which may be understood as coaxial with the containment cavity 323) the aerosol product, resulting in uniform airflow around the aerosol product and uniform heating of the aerosol product. Positioning portions 3213 are provided on the inner wall of the heat conduction member 321 or the heating member 322, which abut against the end of the aerosol product and are used to form a gap (also called a second ventilation segment) between the heating member 322 and the aerosol product. The formation of a gap allows the ends of the aerosol product to be kept away from the heat source (i.e., the heat-generating element 322), thus avoiding the impact on the mouthfeel of the aerosol due to the generation of impurities caused by excessively high temperatures at the ends of the aerosol product. There may be one or more positioning sections 3213. If one or more positioning sections 3213 are provided, they are also spaced apart to form a gap between two adjacent positioning sections 3213 through which airflow can pass (this gap is formed between the positioning sections 3213 and is different from the gap described above). The gap between two adjacent positioning sections 3213 connects the flow guide groove to the gap, and the positioning sections 3213 are also uniformly arranged around the center of the mounting cavity 323 to ensure uniform airflow.

[0109] In some embodiments, to further reduce heat loss, the mounting frame assembly 310a is made of a material with low thermal conductivity and high temperature resistance, such as polyetheretherketone (PEEK). This not only reduces heat loss in the mounting frame assembly 310a but also prevents structural failure of the mounting frame assembly 310a due to high temperatures, thus avoiding an impact on the service life of the aerosol generator.

[0110] Referring to Figures 28 to 30, in some embodiments, the heating assembly 101a further comprises a connecting assembly 40. The connecting assembly 40 is connected between the mounting frame assembly 10b and one end of the heating element 20b having an opening 212b (corresponding to the "inlet / outlet" in the above embodiments), thereby suspending the heating element 20b within the mounting frame assembly 10b, with a gap 50 between the heating element 20b and the mounting frame assembly 10b. Specifically, the mounting frame assembly 10b includes a sleeve 11a and a base 12a, the sleeve 11a including a first cylindrical body 111b and a second cylindrical body 112b. The connecting assembly 40 is connected between the inner wall of the sleeve 11a and one end of the heating element base having an opening 212b. This arrangement reduces the contact area between the heating element base and the mounting frame assembly 10b, thereby reducing thermal energy loss. Furthermore, there is a gap 50 between the heating element base and the mounting frame assembly 10b, and since gas is present in the gap 50 and gas has low thermal conductivity, thermal energy loss can be further reduced.

[0111] In one embodiment, the width of the gap 50 is 0.3 mm or more. When actually implemented, the width of the gap 50 may be set to 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, etc.

[0112] The connecting assembly 40 includes a first connecting member 41 (corresponding to the first internal shrink tube 212 in Figures 3 and 4) and a second connecting member 42 (corresponding to the second internal shrink tube 222 in Figures 3 and 4). The first connecting member 41 is connected to one end or inside of the first cylindrical body 111b and extends into the second cylindrical body 112b, and the second connecting member 42 is connected to one end or inside of the second cylindrical body 112b. The heating element 20b is connected between the first connecting member 41 and the second connecting member 42 and suspended inside the second cylindrical body 112b. This suspended arrangement of the heating element 20b is realized and is advantageous in reducing thermal energy loss. In specific implementation, one end of the heating element base, which has an opening 212b, is connected between the first connecting member 41 and the second connecting member 42.

[0113] In some embodiments, the reflective member 30a is coated on the inner surface of the mounting frame assembly 10b. In specific implementation, the reflective member 30a is coated on the inside of the second cylindrical body 112b and on the side of the base 12a facing the housing space 13a. Of course, in specific applications, in an alternative embodiment, the reflective member 30a may be coated on the outer surface of the heating element 20b, in which case the heating circuit is interposed between the heating element base and the reflective member 30a. In another alternative embodiment, the reflective member 30a is coated on either the inner surface of the mounting frame assembly 10b or the outer surface of the heating element 20b, or there may be no gap 50 between the heating element 20b and the mounting frame assembly 10b, and the reflective member 30a is interposed between the heating element 20b and the mounting frame assembly 10b.

[0114] In one embodiment, the thickness of the reflective member 30a is 0.2 mm or less. This saves material and reduces costs. In specific implementation, the thickness of the reflective member 30a may be 0.08 mm, 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm, 0.2 mm, etc.

[0115] In one embodiment, the reflective member 30a is a reflective thermal insulation film made of a low emissivity material, thereby improving the thermal radiation reflection performance of the reflective member 30a. Here, the reflective member 30a includes one of an aluminum layer, a silver layer, a stainless steel layer, or a ceramic layer.

[0116] In the aerosol generating apparatus according to the embodiment of this application, a reflective member 30a is placed between the heating element 20b and the mounting frame assembly 10b, and the reflective member 30a surrounds the outer surface of the heating element 20b. This improves the heat insulation effect of the aerosol generating apparatus, is advantageous in reducing the cost of the aerosol generating apparatus, and also avoids the aerosol generating apparatus having an excessively large volume.

[0117] The present application has been described in detail using specific examples above, but the above explanation is merely for the purpose of deepening the understanding of the present invention and does not limit this application. A person skilled in the art to which this application belongs can perform several simple deductions, modifications, or substitutions based on the idea of ​​this application.

Claims

1. A heating assembly comprising a heating element, wherein the heating element comprises a heating element base and a heating circuit, The heating element base includes a main body and a bottom wall provided at one end of the main body, and the main body and the bottom wall enclose each other to form a containment cavity for containing an aerosol product, and an entrance / exit is provided at one end of the containment cavity away from the bottom wall, and the entrance / exit is used to insert and remove the aerosol product into the containment cavity. The heating assembly is characterized in that the heating circuit is arranged in the bottom wall and is used to generate heat when an electric current is passed through it.

2. The heating element base is provided with a plurality of flow guide grooves on the side of the heating element base facing the containment cavity and communicating with the inlet and outlet, the inlet and outlet are used to allow the aerosol product to pass through and into the containment cavity and to remove it from the containment cavity, and the flow guide grooves are used to guide the gas from the inlet and outlet to the end of the aerosol product. The main body has a tubular structure and has a first end and a second end that are positioned opposite each other, the entrance is located at the first end of the main body, and the bottom wall is connected to the second end of the main body. The heating assembly according to claim 1, characterized in that the flow guide groove is provided in the main body.

3. A positioning portion is provided on the side of the bottom wall facing the containment cavity, and the positioning portion is used to contact the end of the aerosol product and to form a gap between it and the bottom wall when the aerosol product is inserted into the containment cavity. The heating assembly according to claim 2, characterized in that one end of the flow guide groove, away from the inlet and outlet, communicates with the gap, and the gap and the flow guide groove form an airflow passage.

4. The heating assembly according to claim 2, characterized in that the inner wall of the main body portion is provided with a plurality of recesses that are provided at equal intervals around the center of the main body portion and constitute the flow guide groove.

5. The heating assembly according to claim 2, further comprising a mounting frame assembly, wherein the heating element base is suspended within the mounting frame assembly, and the heating element base is provided with a connecting portion connected to the mounting frame assembly.

6. The heating assembly according to claim 5, wherein a first intake passage communicating with the outside is provided within the mounting frame assembly, a second intake passage is provided within the housing cavity, the first intake passage and the second intake passage are in communication, and the second intake passage includes the flow guide groove and the gap.

7. The heating assembly according to claim 1, characterized in that the heating circuit is arranged on the side of the bottom wall that is away from the housing cavity.

8. The heating assembly according to claim 1, further comprising a lid provided on the side of the bottom wall away from the housing cavity, wherein the heating circuit is provided between the lid and the bottom wall and is at least co-fired with the lid to form an integral part of it.

9. A fixed cavity is formed surrounding the side of the bottom wall that is away from the housing cavity, The heating assembly according to claim 8, characterized in that the heating element and the lid are co-fired to form a co-fired ceramic member, and the co-fired ceramic member is fixed within the fixed cavity.

10. The heating assembly according to claim 1, further comprising a heat conductor disposed on the bottom wall and connected to the bottom wall and the heating circuit to fix the heating circuit to the bottom wall.

11. The heating assembly according to claim 1, further comprising a mounting frame assembly and a reflective member, wherein the heating element base is disposed inside the mounting frame assembly, and the reflective member is disposed between the heating element base and the mounting frame assembly.

12. The heating assembly according to claim 11, characterized in that the thickness of the reflective member is 0.2 mm or less, and / or the reflective member is a reflective heat insulating film made of a low emissivity material.

13. A heating assembly comprising a mounting frame assembly, a heat conduction member, a heat generating member, and a reflecting member, wherein the mounting frame assembly is provided with an air intake, the heat conduction member and the heat generating member are arranged inside the mounting frame assembly, the heat conduction member has a hollow structure with open ends, the heat generating member is arranged at an opening of the heat conduction member away from the air intake and, by surrounding the heat conduction member, forms a housing cavity for housing an aerosol product, an airflow passage is provided inside the housing cavity that connects the air intake and the inside of the aerosol product, the heat generating member is used to generate heat by being energized, the heat conduction member is used to absorb at least a portion of the heat from the heat generating member and to transfer at least a portion of the absorbed heat into the housing cavity, and the reflecting member is arranged inside the support assembly and outside the heat conduction member and is used to reflect the heat radiated outward by the heat conduction member and / or the heat generating member.

14. The heating assembly according to claim 13, wherein the heating element includes a heat transfer element and a heating element, the heating element being a heating region, heating film, or heating circuit provided in the heat transfer element, and at least a part of the structure of the heat transfer element is connected to the heat conduction element.

15. An aerosol generating apparatus comprising a power supply assembly and a heating assembly according to any one of claims 1 to 12 or claim 13 or 14, wherein the power supply assembly supplies power to the heating assembly.

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