Heating assembly and aerosol generating device

Abstract

A heating assembly (1000) and an aerosol generating device. The heating assembly (1000) is used for heating a matrix section (2100) of an aerosol generating matrix (2000), so that the matrix section (2100) generates vapor without burning. The heating assembly (1000) comprises a heating member (100). The heating member (100) is sleeved outside the matrix section (2100), and the length of the heating member (100) is less than the length of the matrix section (2100). The length of the heating member (100) is designed to be less than the length of the matrix section (2100), so that the heat dissipation amount of the heating member (100) to two ends thereof is reduced, and most of the heat on the heating member (100) is effectively used to atomize the matrix section (2100), thereby increasing the energy utilization, reducing energy loss, and saving more energy.

Description

A heating component and an aerosol generating device

[0001] This application claims the priority of the Chinese patent application with application number 202322366539.6 and application name “Heating module and heating non-combustion device” filed with the China Patent Office on August 31, 2023; the Chinese patent application with application number 202311227403.5 and application name “A heating component and aerosol generating device” filed with the China Patent Office on September 21, 2023; and the Chinese patent application with application number 202311193512.X and application name “A heating component and aerosol generating device” filed with the China Patent Office on September 14, 2023, the entire contents of which are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of atomization technology, and in particular to a heating component and an aerosol generating device. Background Art

[0003] The statements herein provide only background information related to the present application and do not necessarily constitute prior art. Aerosol-generating devices generate smoke for inhalation by heating an aerosol-generating substrate at low temperatures without burning tobacco segments. The smoke generated in this manner contains far fewer harmful components than those in smoke from conventional combustion-type cigarettes. Using heat-not-burn smoking devices can significantly reduce the adverse effects of combustion-type cigarettes on the human body, making it a healthier smoking method.

[0004] Current aerosol generating devices typically heat cigarettes using a hollow heating element to heat the circumference of the tobacco segment. To ensure adequate atomization of the tobacco segment, this is typically accomplished by lengthening the hollow heating element. However, this has been shown to increase energy consumption for heating a tobacco segment of the same length, hindering energy conservation. Technical issues

[0005] One of the purposes of the embodiments of the present application is to provide a heating assembly and an aerosol generating device to solve the problem in the prior art of using an extended heating element to ensure sufficient atomization of the cigarette, which results in increased energy consumption. Technical Solutions

[0006] The technical solution adopted in the embodiment of this application is:

[0007] In a first aspect, a heating assembly is provided for heating a matrix segment so that the matrix segment does not burn but produces atomized gas. The heating assembly includes a heating element, which is mounted outside the matrix segment; the length of the heating element is smaller than the length of the matrix segment.

[0008] In one embodiment, the heating assembly further comprises a connecting member provided at at least one end of the heating element, wherein the thermal conductivity of the connecting member is lower than the thermal conductivity of the heating element.

[0009] In one embodiment, the connecting member is a plastic member.

[0010] In one embodiment, the connecting element is connected to the heating element by thermal melting.

[0011] In one embodiment, the connecting member includes an end connected to the heating member, and the hot melt connection between the connecting member and the heating member is that the end of the connecting member is wrapped around the end of the heating member, and / or the end of the connecting member is wrapped by the end of the heating member.

[0012] In one embodiment, a first connecting member and a second connecting member are respectively provided at opposite ends of the heating member, and a bottom end of at least one of the connecting members is recessed with a receiving groove, and a heat insulating layer is provided in the receiving groove.

[0013] In one embodiment, the first connecting member is a hollow structure for inserting the matrix segment therein, the lower end of the first connecting member is connected to the upper end of the heating member, and the upper end of the second connecting member is connected to the lower end of the heating member; the bottom end of the second connecting member is provided with the accommodating groove.

[0014] In a second aspect, the present application further provides an aerosol generating device, comprising an aerosol generating substrate and a heating component; the aerosol generating substrate comprises the substrate segment.

[0015] In one embodiment, the aerosol-generating substrate is inserted into the heating element from top to bottom; a plane rectangular coordinate system is established with the center point of the upper end of the substrate segment as the coordinate origin, the direction passing through the center point of the upper end of the substrate segment and perpendicular to the length of the substrate segment as the Y-axis direction, and the axial direction from the upper end to the lower end of the substrate segment as the positive X-axis direction; the length of the substrate segment is defined as L, and the X-coordinate range of the plane where the lower end surface of the heating element is located and intersects with the positive X-axis is 0.5L~L; the tube length range of the heating element is 0.5L~1.1L.

[0016] In one embodiment, a gap exists between the substrate segment and the heating element.

[0017] In the third aspect, the present application also provides a heating component, including a containing structure, a heating film and a uniform heating layer; the containing structure is used to contain an aerosol generating matrix; the heating film is arranged on the containing structure to heat the containing structure; the containing structure is used to transfer heat to the aerosol generating matrix; the uniform heating layer includes at least two uniform heating sections arranged at intervals along the axial direction of the heating film; the uniform heating sections are arranged on the heating film along the circumference of the heating film.

[0018] In one embodiment, the uniform heating section is a uniform heating ring connected end to end along the circumference of the heating film.

[0019] In one embodiment, the uniform heat section is a uniform heat plate arranged at intervals along the circumference of the heating film;

[0020] Alternatively, the uniform heating section includes a plurality of uniform heating blocks spaced apart along the circumference of the heating film.

[0021] In one embodiment, the equivalent length of the uniform heating section along the circumference of the heating film is A, and the length of the heating film along its circumference is X, then A / X≥60%.

[0022] In one embodiment, the equivalent length of the uniform heating section along the axial direction of the heating film is B, the number of the uniform heating sections is N, the length of the heating film along its axial direction is Y, and NB / Y≤80%.

[0023] In one embodiment, the spacing between at least two adjacent uniform heating sections along the axial direction of the heating film is greater than 0.8 mm and less than 3 mm.

[0024] In one embodiment, the uniform heating section is disposed around the inner side or the outer side of the heating film.

[0025] In one embodiment, the thermal conductivity of the uniform heat section is greater than 200 W / (m·K);

[0026] And / or, the thickness of the uniform heating section is less than 0.2 mm.

[0027] In one embodiment, the receiving structure includes a tube body and a radiation layer; the tube body is used to receive the aerosol generating matrix; the radiation layer is provided on the inner side wall of the tube body, and the radiation layer is used to radiate infrared rays when heated.

[0028] In a fourth aspect, the present application further provides an aerosol generating device, comprising an aerosol generating substrate and the heating assembly provided in the third aspect; the aerosol generating substrate comprises the substrate segment.

[0029] In a fifth aspect, the present application further provides a heating assembly, comprising a receiving component for receiving an aerosol generating substrate, wherein the receiving component forms a receiving cavity, and a supporting gas-blocking member and a base are disposed in the receiving cavity;

[0030] The accommodating component is provided with a heating element;

[0031] The accommodating cavity has two ends, the base is arranged at one end, and the supporting gas-cutting member is arranged in the accommodating cavity near the other end of the accommodating cavity; at least one of the supporting gas-cutting member and the base is formed with a gas-cutting port.

[0032] In one embodiment, a first gas cutoff port is formed on the supporting gas cutoff member;

[0033] A second air cutoff port is formed on the base.

[0034] In one embodiment, the number of the first air cut-off openings ranges from 2 to 10; and the opening cross-sectional area of ​​the first air cut-off openings ranges from 0.5 mm to 3.0 mm.

[0035] In one embodiment, the first gas cut-off opening is formed by an inward concave inner circumferential surface of the supporting gas cut-off member;

[0036] Alternatively, the first gas cutoff opening is formed at a position between the inner circumferential surface and the outer circumferential surface of the supporting gas cutoff member.

[0037] In one embodiment, the number of the second air cut-off openings ranges from 2 to 10; and the opening cross-sectional area of ​​the second air cut-off openings ranges from 0.5 mm to 3.0 mm.

[0038] In one embodiment, the base has a supporting surface facing the supporting gas-cutting member, the supporting surface is concave to form a groove, and the second gas-cutting opening extends from the outer peripheral wall of the base to the groove.

[0039] In one embodiment, the supporting and gas-cutting member is configured to be sleeved outside the aerosol-generating substrate; and the supporting and gas-cutting member is coaxially arranged with the accommodating chamber.

[0040] In one embodiment, the heating component further includes a positioning member; the positioning member and the base are respectively arranged at the axial ends of the portion of the accommodating component where the heating member is provided; the positioning member and the base are respectively used to axially and radially position the axial ends of the portion of the accommodating component where the heating member is provided.

[0041] In one embodiment, the size of the portion of the accommodating component provided with the heating element along the first direction is larger than the size of the portion of the accommodating component provided with the heating element along the second direction; the size of the portion of the accommodating component provided with the heating element along the second direction is set to be smaller than the outer diameter of the aerosol generating substrate; the first direction and the second direction are respectively perpendicular to the axial direction of the accommodating component.

[0042] In a sixth aspect, the present application further provides an aerosol generating device, comprising an aerosol generating substrate and the heating assembly provided in the fifth aspect; the aerosol generating substrate comprises the substrate segment. Beneficial effects

[0043] The beneficial effects of the atomization assembly and aerosol generating device provided in the embodiments of the present application are: in order to ensure sufficient atomization of the matrix segment, the general practice is to lengthen the hollow heating element. In this application, the applicant does the opposite and designs the length of the heating element to be smaller than the length of the matrix segment. This arrangement reduces the amount of heat dissipated by the heating element to its two ends, so that most of the heat on the heating element is effectively used to atomize the matrix segment, thereby improving energy utilization, reducing energy loss, and being more energy-efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0045] FIG1 is a schematic diagram of a three-dimensional assembly structure of a heating assembly provided in a first embodiment of the present application;

[0046] FIG2 is a schematic structural diagram of the connection between the heating assembly and the connector provided in the first embodiment of the present application;

[0047] FIG3 is a schematic diagram of the structure of the aerosol generating substrate provided in the first embodiment of the present application without being inserted into the heating assembly;

[0048] FIG4 is a schematic structural diagram of an aerosol generating substrate inserted into a heating element according to the first embodiment of the present application;

[0049] FIG5 is a schematic cross-sectional view of a heating assembly provided in the first embodiment of the present application;

[0050] FIG6 is an exploded view of the three-dimensional structure of the heating assembly provided in the first embodiment of the present application;

[0051] FIG7 is a schematic diagram of a portion of the structure of an aerosol generating device provided in the first embodiment of the present application;

[0052] FIG8 is a schematic cross-sectional view of a heating element in an aerosol generating device according to a second embodiment of the present invention;

[0053] FIG9 is an enlarged schematic diagram of a portion A in FIG8 ;

[0054] FIG10 is an exploded schematic diagram of a heating element in an aerosol generating device according to a second embodiment of the present application;

[0055] FIG11 is an exploded schematic diagram of another heating element in the aerosol generating device provided in the second embodiment of the present application;

[0056] FIG12 is a diagram showing the axial position and temperature coordinates of a heating element in an aerosol generating device according to a second embodiment of the present application;

[0057] FIG13 is a schematic structural diagram of a ring-shaped uniform heating section in a heating element in an aerosol generating device provided in a second embodiment of the present application;

[0058] FIG14 is a schematic diagram of a structure in which a uniform heating section in a heating element of an aerosol generating device according to a second embodiment of the present application is in the form of a sheet;

[0059] FIG15 is a schematic structural diagram of a heating element in an aerosol generating device according to a second embodiment of the present application, wherein the uniform heating section includes a plurality of uniform heating blocks;

[0060] FIG16 is a schematic diagram illustrating a uniform heating section and a heating film in a heating element of an aerosol generating device according to a second embodiment of the present application;

[0061] FIG17 is a schematic structural diagram of a heating film in a heating element in an aerosol generating device according to a second embodiment of the present application;

[0062] FIG18 is an exploded schematic diagram of a heating element in an aerosol generating device according to a second embodiment of the present application;

[0063] FIG19 is a schematic cross-sectional view of a heating element in an aerosol generating device according to a second embodiment of the present application;

[0064] FIG20 is a schematic diagram of the airflow direction of the aerosol generating device provided in the third embodiment of the present application;

[0065] FIG21 is a schematic structural diagram of an aerosol generating substrate in an aerosol generating device according to a third embodiment of the present application;

[0066] FIG22 is a schematic longitudinal cross-sectional view of a receiving component, a supporting structure, a positioning member, and an aerosol generating substrate in an aerosol generating device according to a third embodiment of the present application;

[0067] FIG23 is an enlarged schematic diagram of a portion A in FIG22 ;

[0068] FIG24 is an enlarged schematic diagram of a portion B in FIG22 ;

[0069] FIG25 is a schematic transverse cross-sectional view of a supporting gas-blocking member and an aerosol-generating matrix in an aerosol-generating device according to a third embodiment of the present application;

[0070] FIG26 is a schematic structural diagram of a supporting gas-cutting member in an aerosol generating device provided in a third embodiment of the present application;

[0071] FIG27 is a schematic structural diagram of a base in an aerosol generating device according to a third embodiment of the present application;

[0072] FIG28 is a schematic transverse cross-sectional view of a heating element and an aerosol generating substrate in an aerosol generating device provided in a third embodiment of the present application.

[0073] In the figures, the following reference numerals are used: 1000, heating assembly; 100, heating element; 110, tube body; 111, first connecting portion; 112, second connecting portion; 120, heating film; 130, lead wire; 500, first connecting member; 501, first base; 502, second cylinder; 600, second connecting member; 601, second base; 602, second cylinder; 603, receiving groove; 700, thermal insulation layer; 800, thermal insulation sleeve; 900, connecting member; 101, receiving structure; 110, tube body; 114, radiation layer; 120, heating film; 121, connecting section; 122, heating wire; 123, heating wire assembly; 130, lead wire; 140, uniform heating layer; 141, uniform heating section; 141a, uniform heating ring; 141b, uniform heating plate; 141c, uniform heating block; 150, film tape; 160, first insulating layer; 170, welding pad; 180, second insulating layer; 190, wear-resistant protective layer; 102, accommodating component; 100, heating element; 200, supporting air-cutting element; 210, fitting surface; 220, first air-cutting port; 300, base; 310, bottom plate; 320, convex column; 321, supporting surface; 322, groove; 323, second air-cutting port; 400, positioning element; 410, top plate; 420, convex ring; 421, limiting groove; 4211, first abutting surface; 4212, second abutting surface; a, first gap; 2000, aerosol generating matrix; 2100, matrix segment; 2200, hollow segment; 2210, air hole; 2300, cooling segment; 2400, filter segment; Y1, first direction; Y2, second direction. Modes for Carrying Out the Invention

[0074] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0075] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0076] In order to illustrate the technical solution provided by this application, a detailed description is given below with reference to specific drawings and embodiments.

[0077] Currently, Heat Not Burning (HNB) is a new product that combines a heating component and a cigarette. It is a "low-temperature cigarette" designed with the concept of "heating without burning". The heating component uses a heating element to heat the substrate segment of the processed aerosol-generating substrate (similar to the shape of a cigarette) to a certain temperature at low temperature, so that the substrate segment bakes out the flavor, achieving a smoking effect close to that of real cigarettes. Current aerosol generating devices mostly use hollow heating elements to heat the circumference of the cigarette substrate segment. Therefore, in order to ensure sufficient atomization of the substrate segment, the general practice is to lengthen the hollow heating element. However, it has been found that lengthening the heating element increases the energy consumption required to heat the substrate segment of the same length, which is not conducive to energy saving.

[0078] Based on this, in order to solve the above problems, the present application designs a heating component. By designing the length of the heating element to be smaller than the length of the matrix segment, that is, shortening the heating element, such a setting can reduce the amount of heat dissipated by the heating element to its two ends, so that most of the heat on the heating element is effectively atomized to the matrix segment, thereby improving energy utilization, reducing energy loss, and being more energy-efficient.

[0079] Please refer to Figures 1, 2, 3, and 4. The heating component 1000 provided in the first aspect of the embodiment of the present application is used to heat the matrix segment 2100 so that the matrix segment 2100 does not burn but produces atomized gas. The heating component 1000 includes a heating element 100, which is mounted outside the matrix segment 2100. The length of the heating element 100 is less than the length of the matrix segment 2100.

[0080] Specifically, the heating assembly 1000 of the present application is one of the components of an aerosol-generating device and is used in conjunction with an aerosol-generating substrate 2000. Aerosol-generating substrate 2000 is shaped like a cigarette and includes a substrate segment 2100 containing a tobacco product, making it more similar to a traditional cigarette in taste and appearance. During use, aerosol-generating substrate 2000 is inserted into the heating element 100 of the heating assembly 1000. The heating element 100 generates heat to heat the substrate segment 2100 to a sufficient level to emit smoke for inhalation by the user.

[0081] Referring to Figure 3 , aerosol-generating substrate 2000 also includes a filter segment 2400 and a hollow segment 2200. Hollow segment 2200 is located between substrate segment 2100 and filter segment 2400. Filter segment 2400 is used to filter harmful substances from smoke. Hollow segment 2200 provides heat insulation, preventing the filter segment 2400 from overheating and causing burns to the mouth. Furthermore, hollow segment 2200 allows the gas generated by the heated and atomized substrate segment 2100 to mix with air.

[0082] As can be understood, the heating element 100 is used to convert electrical energy into thermal energy. Referring to Figure 6, the heating element 100 includes a tube body 110 and a heating film 120 wound around the tube body 110 along the axial direction of the tube body 110. The heating film 120 can be a heating plate or a resistance wire. The heating film 120 is provided with a lead 130. By electrically connecting the lead 130 to a power source, the heating film 120 will generate heat and transfer it to the tube body 110, thus providing the tube body 110 with a heating function.

[0083] To ensure adequate atomization of the matrix segment 2100, conventional methods employ a longer heating element. However, because the heating element is made of metal, it has good thermal conductivity and axial heat transfer, resulting in significant heat dissipation from the heating element to both ends of the axial direction, leading to energy loss. Therefore, a longer heating element consumes more energy to heat a matrix segment of the same length, hindering energy conservation.

[0084] Therefore, the present application improves the structure of the heating assembly 1000 by designing the length of the heating element 100 to be shorter than the length of the matrix segment 2100. Referring to Figures 2, 3, and 4, the length of the heating element 100 is shown as H. It is understood that the heating assembly 1000 is often used in conjunction with an aerosol-generating matrix 2000. Therefore, the length of the heating assembly 1000 can be designed based on the length of the matrix segment 2100 of a commercially available aerosol-generating matrix 2000, such that the length of the heating element 100 is shorter than the length of the matrix segment 2100.

[0085] The heating component 1000 of the present application, by designing the length of the heating element 100 to be smaller than the length of the matrix segment 2100, can undoubtedly reduce the amount of heat dissipated by the heating element 100 to its two ends, so that most of the heat on the heating element 100 is effectively atomized to the matrix segment 2100, thereby improving energy utilization, reducing energy loss, and being more energy-efficient.

[0086] Please refer to FIG. 2 to FIG. 6 . In some embodiments, the heating assembly 1000 further includes a connecting member 900 provided at at least one end of the heating element 100 . The connecting member 900 is a plastic member.

[0087] It can be understood that the connecting member 900 is connected to the end of the heating member 100, and the connecting member 900 can isolate the heat generated by the heating member 100 and prevent heat dissipation.

[0088] In one embodiment, the connecting member 900 may be provided at only one end of the heating element 100; for example, the connecting member 900 may be provided at only the upper end of the heating element 100, and the lower end of the heating element 100 may be correspondingly provided as a bottom sealing structure; alternatively, the connecting member 900 may be provided at only the lower end of the heating element 100, and the upper end of the heating element 100 may be correspondingly provided as an open structure.

[0089] In one embodiment, the connecting member 900 is not limited to being provided at only one end of the heating member 100 , but may also be provided at the other end of the heating member 100 .

[0090] The connector 900 is specifically an injection molded part, that is, it is formed by injection molding in a mold using an injection molding device, which is convenient to process and has high product stability.

[0091] 2 and 3 , in some embodiments, the thermal conductivity of the connecting member 900 is lower than the thermal conductivity of the heating member.

[0092] Thermal conductivity, also known as thermal conductivity coefficient or thermal conductivity, is a physical quantity that indicates the heat conduction capacity of a material. The higher the thermal conductivity, the better the thermal conductivity. The unit of thermal conductivity is W / (m·K).

[0093] It is understandable that since the connector 900 is directly connected to the end of the heating element 100, if the thermal conductivity of the connector 900 is high, it will cause further heat loss from the heating element 100. Therefore, the thermal conductivity of the connector 900 is designed to be lower than that of the heating element 100 to reduce heat loss.

[0094] In one embodiment, the thermal conductivity of connector 900 is reduced by adding a high-insulating material, such as micron-sized hollow glass beads, to the basic material components of connector 900 during the injection molding process. The insulating material is evenly mixed with the original molding material before injection molding, thereby reducing the thermal conductivity of connector 900 and, in turn, reducing heat loss from heater 100.

[0095] Specifically, during the mixing process of the thermal insulation material and the original injection molding material, the weight percentage of the thermal insulation material is 10% to 30%.

[0096] For example, taking the thermal conductivity of ordinary injection-molded parts as 0.25-0.3W / (m·K) as a reference, by adding micron-sized hollow glass beads during the injection molding process, the thermal conductivity of the injection-molded parts after injection molding is 0.15-0.21W / (m·K), and the thermal conductivity of the product is significantly reduced.

[0097] By adopting the above technical solution, by adding insulating materials with high insulation performance during the injection molding process of the connecting part 900, the thermal conductivity of the connecting part 900 can be reduced, thereby reducing the heat loss of the heating part 100 to the outside and improving the insulation effect.

[0098] Please refer to FIG. 2 and FIG. 3 . In some embodiments, the connecting member 900 is connected to the heating member 100 by thermal melting.

[0099] The hot melt connection described in this application refers to a process where the heating element 100 is made of metal and the connecting element 900 is made of plastic. To connect, the ends of the heating element 100 are first heated to the melting point of the connecting element 900. Pressure is then applied to bring the ends of the heating element 100 into contact with the corresponding ends of the connecting element 900. The temperature of the heating element 100 partially melts the ends of the connecting element 900. After cooling, the ends of the connecting element 900 and the heating element 100 fuse together.

[0100] By adopting the above technical solution, the heating element 100 and the connecting element 900 are hot-melt connected, the connection is very tight, the structural support and fixation are more reliable; and it can effectively isolate the contact between the inside of the heating element 100 and the external air, reducing heat loss.

[0101] Please refer to Figures 2-6. In some embodiments, the connecting member 900 includes an end connected to the heating member 100. The hot melt connection between the connecting member 900 and the heating member 100 is that the end of the connecting member 900 is wrapped around the end of the heating member 100, and / or the end of the connecting member 900 is wrapped by the end of the heating member 100.

[0102] It can be understood that there are three different connection methods at the hot melt connection between the connecting member 900 and the heating member 100: the end of the connecting member 900 is wrapped around the outer periphery of the end of the heating member 100; or, the end of the connecting member 900 is wrapped by the end of the heating member 100; or, the end of the connecting member 900 wraps the end of the heating member 100 inside and outside.

[0103] In some embodiments, connectors 900 are provided at opposite ends of the heating element 100. Based on the state of the heating assembly 1000 in FIG. 2 , the connector 900 located at the upper end of the heating element 100 is defined as the first connector 500; and the connector 900 located at the lower end of the heating element 100 is defined as the second connector 600. Specifically, the first connector 500 and the second connector 600 are respectively connected to opposite ends of the heating element 100. Both the first connector 500 and the second connector 600 can isolate the heat generated by the heating element 100 and prevent heat dissipation.

[0104] 2 , 3 and 4 , the first connecting member 500 is a hollow structure into which the matrix segment 2100 is inserted. The lower end of the first connecting member 500 is hot-melt-connected to the upper end of the heating member 100 , and the upper end of the second connecting member 600 is hot-melt-connected to the lower end of the heating member 100 .

[0105] The first connector 500 is connected to the upper end of the heating element 100, and the second connector 600 is connected to the lower end of the heating element 100. The substrate segment 2100 is inserted into the heating assembly 1000 from top to bottom. The first connector 500 is hollow and does not interfere with the insertion of the substrate segment 2100. The bottom end of the second connector 600 is closed. After the substrate segment 2100 is inserted into the heating element 100, the bottom end of the substrate segment 2100 abuts the second connector 600.

[0106] The first connecting member 500 is a flange structure and includes a first base 501 and a first barrel 502 disposed on the first base 501 and extending in the axial direction of the heating element. The end of the heating element 100 is connected to the first barrel 502. Furthermore, although the length of the heating element 100 is shortened in this application, the length of the first barrel 502 can be extended accordingly to compensate for the shortened length of the heating element 100, so that the length of the heating assembly 1000 remains unchanged. Ultimately, the original size of the heating assembly 1000 is not affected, and no structural changes are required to other structures of the aerosol generating device other than the heating assembly 1000, greatly reducing the cost of product upgrades.

[0107] It can be understood that the heating element 100 is a tubular structure, and the upper end of the heating element 100 is correspondingly provided with a first connecting portion 111 for thermally melting the first cylinder 502, and the first connecting portion 111 is also an annular structure.

[0108] Here, the diameter of the first connecting portion 111 is not limited, as long as it can be connected to the first cylinder 502 .

[0109] For example, the first connecting portion 111 can be sleeved on the outside of the first barrel 502. After the connection, the outer periphery of the first barrel 502 is wrapped by the first connecting portion 111. Alternatively, the first connecting portion 111 can also be sleeved on the inner wall of the first barrel 502. After the connection, the first barrel 502 wraps the first connecting portion 111.

[0110] Alternatively, since hot melt connection is adopted, the first connection portion 111 may also be directly inserted into the first tube 502 , so that after connection, the first tube 502 is wrapped inside and outside by the first connection portion 111 .

[0111] The second connecting member 600 is a flange structure and includes a second base 601 and a second barrel 602 disposed on the second base 601 and extending in the axial direction of the heating element. The end of the heating element 100 is connected to the second barrel 602. Furthermore, although the length of the heating element 100 is shortened in this application, the length of the second barrel 602 can be extended accordingly to compensate for the shortened length of the heating element 100, so that the length of the heating assembly 1000 remains unchanged. Ultimately, the original size of the heating assembly 1000 is not affected, and no structural changes are required to other structures of the aerosol generating device other than the heating assembly 1000, greatly reducing the cost of product upgrades.

[0112] It can be understood that the heating element 100 is a tubular structure, and the lower end of the heating element 100 is correspondingly provided with a second connecting portion 112 for thermally melting the second cylinder 602, and the second connecting portion 112 is also an annular structure.

[0113] Here, the diameter of the second connecting portion 112 is not limited, as long as it can be connected to the second cylinder 602 .

[0114] For example, the second connecting portion 112 can be sleeved on the outside of the second cylinder 602. After the connection, the outer periphery of the second cylinder 602 is wrapped by the second connecting portion 112. Alternatively, the second connecting portion 112 can also be sleeved on the inner wall of the second cylinder 602. After the connection, the second cylinder 602 wraps the second connecting portion 112.

[0115] Alternatively, since hot melt connection is adopted, the second connection portion 112 can also be directly inserted into the second tube 602 , so that after connection, the second tube 602 is wrapped inside and outside by the second connection portion 112 .

[0116] By adopting the above technical solution, the specific connection position of the heating element 100 and the first connecting member 500 or the second connecting member 600 is not unique, and the most convenient solution can be selected according to actual connection requirements.

[0117] Referring to Figure 5, in some embodiments, connecting parts 900 are provided at opposite ends of the heating element 100, one of the connecting parts 900 is defined as the first connecting part 500, and the other connecting part 500 is defined as the second connecting part 600, and the bottom end of the second connecting part 600 is recessed with a receiving groove 603, and the receiving groove 603 is provided with an insulation layer 700.

[0118] Specifically, based on the state of the heating assembly 1000 in FIG. 2 , the connector 900 located at the upper end of the heating element 100 is defined as the first connector 500 ; the connector 900 located at the lower end of the heating element 100 is defined as the second connector 600 .

[0119] As can be understood, referring to Figure 5 , the bottom end of the existing second connector 600 is a solid structure. The material of the second connector 600 itself has thermal conductivity, which results in heat dissipation. Therefore, the present application provides a receiving groove 603 at the bottom of the second connector 600, and a heat-insulating layer 700 within the receiving groove 603, thereby further reducing heat loss and improving the heating efficiency of the heating element.

[0120] The heat insulation layer 700 has good heat insulation performance. For example, the heat insulation layer 700 can be made of aerogel material, which has good heat insulation performance and slows down heat dissipation.

[0121] Please refer to FIG. 5 and FIG. 6 . In some embodiments, the heating assembly 1000 further includes a heat insulating sleeve 800 which is sleeved around the outer periphery of the heating element 100 . The heat insulating sleeve 800 is sandwiched between the first connecting member 500 and the second connecting member 600 .

[0122] It can be understood that providing a heat insulating sleeve 800 on the periphery of the heating element 100 can effectively isolate heat and reduce heat loss of the heating element 100 .

[0123] Specifically, the thermal insulation sleeve 800 is a sleeve structure, and the thermal insulation sleeve 800 is sleeved outside the heating element 100; and the opposite ends of the thermal insulation sleeve 800 are respectively connected to the first connecting member 500 and the second connecting member 600, thereby sealing the heating element 100 to avoid energy dissipation.

[0124] For example, the thermal insulation sleeve 800 may be made of aerogel material, which has good thermal insulation performance and slows down heat dissipation.

[0125] Please refer to FIG. 7 . A second aspect of an embodiment of the present application provides an aerosol generating device, including an aerosol generating substrate 2000 and the above-mentioned heating assembly 1000 .

[0126] Specifically, the aerosol generating device is a new product that combines a heating component 1000 and an aerosol generating matrix 2000; the sol generating matrix 2 is in the shape of a cigarette. When in use, the matrix segment 2100 of the aerosol generating matrix 2000 is inserted into the heating element 100 of the heating component 1000. The heating element 100 generates heat to heat the matrix segment 2100 of the aerosol generating matrix 2000 to a degree sufficient to emit smoke for the user to inhale.

[0127] 3 and 4 , in some embodiments, the aerosol generating substrate 2000 is inserted into the heating element 100 from top to bottom; a plane rectangular coordinate system is established with the center point of the upper end of the substrate segment 2100 as the coordinate origin O, the direction passing through the center point of the upper end of the substrate segment 2100 and perpendicular to the length of the substrate segment 2100 as the Y-axis direction, and the axial direction from the upper end to the lower end of the substrate segment 2100 as the positive X-axis direction; the length of the substrate segment 2100 is defined as L, and the X-coordinate range of the plane where the lower end surface of the heating element is located and intersecting with the positive X-axis is 0.5L to L; the tube length range of the heating element is 0.5L to 1.1L.

[0128] It is understood that the length of the matrix segment 2100 is defined as L. To ensure that the heating element 100 can sufficiently heat the matrix segment 2100, the heating element 100 should not be too short. The length of the heating element 100 ranges from 0.5L to 1.1L. For example, the length of the heating element 100 can be 0.5L, 0.6L, 0.7L, 0.8L, 0.9L, 1.0L, 1.1L, etc.

[0129] Furthermore, after the aerosol-generating substrate 2000 is inserted into the heating element 100, it does not completely overlap with the heating element 100. The two will partially overlap and partially offset. Therefore, the X-coordinate range where the plane of the lower end surface of the heating element 100 intersects the positive direction of the X-axis is further limited to 0.5L to L. For example, the X-coordinate where the plane of the lower end surface of the heating element 100 intersects the positive direction of the X-axis can be 0.5L, 0.6L, 0.7L, 0.8L, 0.9L, 1.0L, etc.

[0130] Therefore, it can be concluded that the length of the overlapping portion between the heating element 100 and the aerosol generating matrix 2000 is at least 0.5L, so that the heating element 100 can sufficiently heat the matrix segment 2100 and ensure that the matrix segment 2100 is fully atomized.

[0131] 3-4 , in some embodiments, a gap exists between the outer surface of the aerosol generating substrate 2000 and the heating element 100 .

[0132] As can be understood, referring to FIG4 , after the aerosol-generating substrate 2000 is inserted into the heating assembly 1000, the lower end of the aerosol-generating substrate 2000 may not partially overlap with the heating element 100. However, if a gap exists between the outer surface of the aerosol-generating substrate 2000 and the heating element 100, during the heating process, the airflow in the gap, after being heated by the heating element 100, can flow to the lower end of the substrate segment 2100 and heat the lower end of the substrate segment 2100, allowing the lower end of the substrate segment 2100 to be fully heated and atomized, thereby improving the atomization effect.

[0133] Secondly, the aerosol generating substrate 2000 needs to be inserted into the heating element 100 . There is a gap between the outer surface of the aerosol generating substrate 2000 and the heating element 100 so that the aerosol generating substrate 2000 can be smoothly inserted into the heating element 100 .

[0134] In some embodiments, referring to the table below, the present application also provides a data comparison table of the energy consumption required to fully atomize the substrate segment 2100 of the aerosol generating substrate 2000 under different parameters.

[0135] Here, the length of the substrate segments 2100 of the aerosol-generating substrates 2000 used is 20 mm.

[0136] By comparing data 1, data 2 and data 3, we can see that:

[0137] The longer the heating element 100 is, the greater the energy consumption required to heat the same length of the substrate segment 2100. Specifically, when the length of the heating element 100 is 19.6 mm, which is smaller than the length of the substrate segment 2100 of 20 mm, the required energy consumption is minimal.

[0138] By comparing data 3 and data 4, we can see that:

[0139] On the premise that the length of the heating element 100 is the same, by using the connecting piece 900 with the heat insulating material added during the injection molding process, the energy consumption required for heating the matrix segment 2100 of the same length is reduced.

[0140] Therefore, the present application combines the above two methods, designs the length of the heating element 100 to be smaller than the length of the matrix segment 2100, and adds insulation material during the injection molding process of the connecting element 900, thereby maximizing the reduction of energy loss and being more energy-efficient.

[0141] Thirdly, circumferential heating is currently a common heating method for aerosol generating devices to heat the aerosol generating matrix. Specifically, the aerosol generating matrix is ​​inserted into the heating element so that the aerosol generating matrix is ​​heated in a circumferential direction by the heating element. However, due to processing errors such as the thickness, width and gap of the heating film or unreasonable design, the existing heating element will inevitably have local heat concentration and uneven heating. In order to improve the heating uniformity of the aerosol generating matrix by the heating element, a uniform heating layer can be set on the surface of the heating element to transfer the heat generated by the heating film to the surrounding of the heating film through the uniform heating layer. Among them, the uniform heating layer is a whole piece structure, so that the heat of the heating element can be transferred in the axial and circumferential directions, which improves the heating uniformity of the aerosol generating matrix by the heating element to a certain extent. However, the applicant's research found that the setting of the uniform heating layer will cause the heat in the central area of ​​the heating element to be quickly transferred to the axial ends of the heating element, which ultimately leads to the problem of low heating efficiency in the central area of ​​the heating element and low overall energy efficiency.

[0142] In order to solve the above problems, the present application sets a uniform heating layer 140 in the heating element 100, and sets the uniform heating layer 140 in sections along the axial direction of the heating element 100, and sets the uniform heating sections 141 along the circumference of the heating element 100, so that the heat generated by the heating element 100 can be transferred circumferentially through each uniform heating section 141, and at the same time, it can avoid quickly transferring the heat in the central area of ​​the heating element 100 to the axial end positions, so as to improve the heating efficiency of the central area, and thereby improve the energy efficiency of the entire heating element 100.

[0143] Please refer to Figures 8 to 11. The heating element 100 includes a containing structure 101, a heating film 120 and a uniform heating layer 140; the containing structure 101 is used to contain the aerosol generating matrix 2000; the heating film 120 is arranged on the containing structure 101 to heat the containing structure 101; the containing structure 101 is used to transfer heat to the aerosol generating matrix 2000; the uniform heating layer 140 includes at least two uniform heating sections 141 arranged at intervals along the axial direction of the heating film 120; the uniform heating sections 141 are arranged on the heating film 120 along the circumference of the heating film 120.

[0144] In the embodiment of the present application, a uniform heating layer 140 is provided, and the uniform heating layer 140 includes at least two uniform heating segments 141 spaced apart along the axial direction of the heating film 120. The uniform heating segments 141 are disposed circumferentially around the heating film 120. The uniform heating segments 141 are disposed circumferentially around the heating film 120, so that heat generated at corresponding portions of the heating film 120 can be transferred circumferentially through the uniform heating segments 141. This increases the circumferential temperature uniformity of the heating film 120, improves the circumferential heat conduction efficiency of the aerosol generating substrate 2000, and improves the temperature difference between the surface and the center of the aerosol generating substrate 2000. At the same time, each uniform heating section 141 is arranged at intervals along the axial direction of the heating film 120, so that the uniform heating sections 141 can be arranged according to the heating conditions of the heating film 120 along its axial direction. For example, one of the uniform heating sections 141 can be set at an axial position of the heating film 120 with higher heating, and another uniform heating section 141 can be set at an axial position of the heating film 120 with lower heating, or even other uniform heating sections 141 can be set at an axial position of the heating film 120 with relatively medium heating. Therefore, the temperature of each heating layer of the heating film 120 can be transferred circumferentially and axially through the uniform heating layer 140 to form a more obvious temperature gradient, without directly transferring heat from the higher temperature area to the lower temperature area along the axial direction, thereby improving the heating efficiency of the central area of ​​the heating element 100 and improving the overall energy efficiency of the heating element 100.

[0145] Furthermore, a specific temperature gradient is formed along the axis of the aerosol-generating matrix 2000, improving the temperature distribution according to desired settings. This allows the aroma of the aerosol-generating matrix 2000 to be stimulated layer by layer, resulting in a more sustained and comprehensive aroma experience. Furthermore, the formation of this temperature gradient helps lower the aerosol temperature during the first two puffs.

[0146] 8 to 11 , the uniform heating section 141 surrounds the outside of the heating film 120. It is understood that in other embodiments of the present application, the uniform heating section 141 may also surround the inside of the heating film 120, which is not a limitation here.

[0147] Please refer to Figure 12, which is a coordinate relationship diagram of the axial position and temperature of the heating element 100, wherein the horizontal L represents the axial position of the heating element 100. For example, the axial position of the bottom end of the heating element 100 can be set as the coordinate origin, and L represents the position coordinate of the heating element 100 from bottom to top. T represents the temperature of the heating element 100 corresponding to different axial positions. N1 is the relationship line between the axial position and temperature of the heating element 100 when the uniform heating layer 140 is a whole structure in the prior art, and N2 is the relationship line between the axial position and temperature of the heating element 100 when the uniform heating layer 140 includes a plurality of uniform heating segments 141 arranged at intervals along the axial direction in the embodiment of the present application. As can be seen from Figure 8, when the uniform heating layer 140 is arranged in sections, the heat generated by the heating element 100 can form a more obvious temperature gradient.

[0148] In one embodiment, when the heating film 120 is powered, the middle region of the heating film 120 generates higher heat along its axis, while the end regions generate lower heat. It should be noted that the middle region is not necessarily located in the middle of the heating film 120, but may be located slightly offset from the middle to the ends.

[0149] In one embodiment, the number of uniform heating sections 141 is at least three, of which two uniform heating sections 141 correspond to the axial end regions of the heating film 120, and the remaining uniform heating sections 141 are arranged between the two end uniform heating sections 141. The two end uniform heating sections 141 can achieve uniform temperature transfer in the circumferential direction in the two end regions of the heating film 120, and the middle uniform heating section 141 can achieve uniform temperature transfer in the circumferential direction in the middle region of the heating film 120. Since the uniform heating sections 141 are arranged at intervals along the axial direction, no heat transfer will occur between adjacent uniform heating sections 141, that is, the heat of the heating film 120 can be uniformly transferred in the circumferential direction, while the temperature gradient of the heating film 120 in the axial direction can be maintained, that is, the distribution of the temperature field can be improved according to the set requirements, so that the fragrance of the aerosol generating matrix 2000 is stimulated layer by layer, and a more lasting and full fragrance experience is obtained.

[0150] In one embodiment, referring to Figures 11 and 13, the uniform heating section 141 is a uniform heating ring 141a connected end to end along the circumference of the heating film 120, that is, the uniform heating section 141 is arranged around the heating film 120, so that the heat of the heating film 120 can be evenly transferred along its circumference, thereby increasing the temperature uniformity of the heating film 120 along the circumference, improving the circumferential heat conduction efficiency of the aerosol generating matrix 2000, and improving the temperature difference problem between the surface and the center of the aerosol generating matrix 2000.

[0151] In another embodiment of the present application, referring to Figures 10 and 14, the uniform heating section 141 is a uniform heating sheet 141b spaced at intervals along the circumference of the heating film 120. That is, the uniform heating section 141 is a non-closed loop structure, but a sheet-like structure. During installation, the opposite ends of the uniform heating section 141 along the circumference can be aligned with the circumferentially higher heating areas of the heating film 120, so that the heat from the higher heating areas of the heating film 120 can be transferred circumferentially to the lower heating areas through the uniform heating section 141, so that the heat of the heating film 120 is transferred along its circumferential direction. In addition, the sheet-like structure is easy to manufacture and install, and the installation position of the sheet-like structure can be adjusted according to the need for uniform heating.

[0152] In another embodiment of the present application, referring to FIG15 , the uniform heating section 141 includes a plurality of uniform heating blocks 141 c spaced apart along the circumference of the heating film 120. Due to the structural design of the heating film 120 (the structure of the heating film 120 will be described later), the heating capacity of the heating film 120 is unevenly distributed along the circumference. By providing a plurality of uniform heating blocks 141 c spaced apart along the circumference of the heating film 120, the uniform heating blocks 141 c can distribute the higher heating positions toward the periphery. In this way, the heat of the heating film 120 can be transferred circumferentially, while also reducing the circumferential area of ​​the uniform heating section 141 and the material cost of the uniform heating section 141.

[0153] In one embodiment, the uniform heating section 141 is rectangular or square when unfolded. In other embodiments of the present application, the uniform heating section 141 may also be in other shapes, such as circular, elliptical, polygonal, or other irregular shapes, such as a roughly rectangular shape enclosed by curves, or having one or more through holes in the middle of the rectangle, which is not intended to be the only limitation.

[0154] In one embodiment, referring to FIG. 16 , the equivalent length of the uniform heating section 141 along the circumference of the heating film 120 is A, and the length of the heating film 120 along its circumference is X, then A / X≥60%.

[0155] When the uniform heating section 141 is a regular rectangle or square, the equivalent length A of the uniform heating section 141 along the circumference of the heating film 120 is the length of the uniform heating section 141. When the uniform heating section 141 is an irregular shape, the equivalent length A of the uniform heating section 141 along the circumference of the heating film 120 is the length of the equivalent rectangle or square after filling the hole or periphery of the uniform heating section 141.

[0156] When the uniform heating section 141 includes a plurality of uniform heating blocks 141 c spaced apart along the circumference of the heating film 120 , A is the sum of the equivalent lengths of the uniform heating blocks 141 c along the circumference of the heating film 120 .

[0157] In the embodiment of the present application, through the design of A / X ≥ 60%, it can be ensured that the heat of the heating film 120 can be effectively distributed along the circumference, reducing the situation of local heat accumulation.

[0158] In one embodiment, referring to FIG16 , the equivalent length of the uniform heating section 141 along the axial direction of the heating film 120 is B, the number of uniform heating sections 141 is N, and the length of the heating film 120 along its axial direction is Y, then NB / Y ≤ 80%. It should be noted that NB refers to N multiplied by B.

[0159] When the uniform heating section 141 is a regular rectangle or square, the equivalent length B of the uniform heating section 141 along the axial direction of the heating film 120 is the width of the uniform heating section 141. When the uniform heating section 141 is an irregular shape, the equivalent length B of the uniform heating section 141 along the axial direction of the heating film 120 is the width of the equivalent rectangle or square after filling the hole or periphery of the uniform heating section 141.

[0160] In the embodiment of the present application, through the design of NB / Y≤80%, it is ensured that the uniform heat layer 140 will not conduct a large amount of heat from the middle area of ​​the heating film 120 to the axial ends of the heating film 120, thereby reducing the heat loss in the middle area of ​​the heating film 120, ensuring the heating efficiency of the middle area of ​​the heating film 120, and improving the situation where the overall energy efficiency of the heating film 120 is too low.

[0161] In one embodiment, the spacing between at least two adjacent uniform heating sections 141 along the axial direction of the heating film 120 is greater than 0.8 mm and less than 3 mm. When the spacing between two adjacent uniform heating sections 141 is too small, heat transfer can be carried out between the adjacent uniform heating sections 141, thereby transferring the heat in the middle area of ​​the heating film 120 to both ends and causing heat loss; when the spacing between two adjacent uniform heating sections 141 is too large, circumferential heat transfer cannot be achieved at a larger axial position of the heating film 120, thereby causing local overheating. When the spacing between two adjacent uniform heating sections 141 is between 0.8 mm and 3 mm, it is possible to ensure that the heat of the heating film 120 can be evenly transferred along the circumference while preventing the heat in the middle area of ​​the heating film 120 from being transferred to both ends in the axial direction.

[0162] In one embodiment, the uniform heating layer 140 includes two uniform heating segments 141 spaced apart from each other, and the distance between the two uniform heating segments 141 is between 0.8 mm and 3 mm.

[0163] In another embodiment of the present application, the uniform heating layer 140 includes three, four, five, or more uniform heating segments 141 spaced apart in sequence along the axial direction of the heating film 120. The spacing between at least two adjacent uniform heating segments 141 is between 0.8 mm and 3 mm, while the spacing between other adjacent uniform heating segments 141 may be less than 0.8 mm or between 0.8 mm and 3 mm.

[0164] In one embodiment, the thermal conductivity of the uniform heating section 141 is greater than 200 W / (m·K). The greater the thermal conductivity of the uniform heating section 141, the better the uniform heating effect of the uniform heating section 141. Generally, the heating film 120 is made of steel, and the thermal conductivity of steel is 50-60 W / (m·K). The thermal conductivity of the uniform heating section 141 is greater than 200 W / (m·K). This can achieve a better uniform heating effect based on the heating film 120, and the resulting temperature gradient is more obvious.

[0165] In one embodiment, the uniform heat section 141 is made of copper, silver, or graphite. The thermal conductivity of copper, silver, or graphite is greater than 200 W / (m·K), thereby achieving better heat conduction effect.

[0166] In one embodiment, the thickness of the uniform heating section 141 is less than 0.2 mm. The thicker the uniform heating section 141 is, the more difficult it is for the uniform heating section 141 to conduct heat. Therefore, the thickness of the uniform heating section 141 needs to be set smaller.

[0167] In one embodiment, referring to FIG. 17 , the heating film 120 includes two connecting segments 121 and a plurality of heating wires 122 . The heating wires 122 are connected in parallel to each other. One end of each heating wire 122 is connected to the two connecting segments 121 , respectively, and the other ends of at least two heating wires 122 are connected together.

[0168] Specifically, referring to Figure 17 , the two connecting segments 121 are each disposed near one end of the containment structure 101 and spaced apart along the circumference of the containment structure 101. The heating film 120 includes at least two heating wire groups 123, each of which includes two heating wires 122. The bottom ends of the two heating wires 122 are respectively connected to the two connecting segments 121, and the top ends of the two heating wires 122 are connected by a connecting line extending along the circumference of the containment structure 101. Each heating wire 122 extends in an upward curved manner along the axis of the containment structure 101, for example, along an S-shaped curve.

[0169] In the embodiment of the present application, the heating film 120 is provided with a plurality of heating wires 122 that curve and extend along the axial direction of the containment structure 101. Each heating wire 122 is sequentially spaced along the circumference of the containment structure 101. This allows the heat generated by the heating film 120 to be distributed along the axial and circumferential directions of the containment structure 101, ensuring that all positions of the aerosol-generating substrate 2000 along the axial and circumferential directions are heated. In addition, the temperature gradient generated by the heating film 120 can be achieved by adjusting various parameters such as the degree of curvature, length, width, and spacing between the heating wires 122.

[0170] In one embodiment, the heating element 100 also includes two soldering pads 170 and two leads 130. The two soldering pads 170 are respectively connected to the two connecting sections 121. One end of the two leads 130 is respectively welded to the two soldering pads 170. The other end of the two leads 130 is used to connect to a power supply component, so that the heating film 120 can be powered by the power supply component.

[0171] In one embodiment, referring to Figures 10 and 11 , the heating element 100 further includes a film strip 150 . The heating film 120 is attached to the outer wall of the receiving structure 101 , and the film strip 150 is sleeved over the heating film 120 . The film strip 150 is made of an insulating material. The provision of the film strip 150 insulates the heating film 120 and the heat-leveling layer 140 , both of which are made of a metallic material, from each other, preventing the heat-leveling layer 140 from generating unreasonable heat due to electrical conduction with the heating film. Furthermore, the provision of the film strip 150 facilitates the installation of the various heat-leveling segments 141 within the heat-leveling layer 140 .

[0172] In one embodiment, referring to Figures 9 and 11 , the containment structure 101 includes a tube body 110 and a radiation layer 114. The tube body 110 is used to house the aerosol-generating substrate 2000. The radiation layer 114 is disposed on the inner sidewall of the tube body 110. When heated, the radiation layer 114 radiates infrared light, thereby utilizing the infrared light to heat and atomize the aerosol-generating substrate 2000 housed within the tube body 110. Because infrared light has a certain degree of penetrability and does not require a medium, it has high heating efficiency. This effectively improves the preheating efficiency of the aerosol-generating substrate 2000 and reduces the temperature difference between the inside and outside of the aerosol-generating substrate 2000, thereby achieving more uniform baking of the aerosol-generating substrate 2000 and avoiding the problem of locally high temperatures causing the aerosol-generating substrate 2000 to burn. Furthermore, by disposing the radiation layer 114 on the inner sidewall of the tube body 110, the infrared light radiated by the radiation layer 114 can directly reach the aerosol-generating substrate 2000 without passing through the tube body 110, thereby increasing the utilization rate of the infrared light.

[0173] In one embodiment, the radiation layer 114 can be formed on the inner wall of the tube body 110 by screen printing, sputtering, coating, printing, etc. The radiation layer 114 can be an infrared layer, and the material of the infrared layer includes at least one of high infrared emissivity materials such as perovskite system, spinel system, carbide, silicide, nitride, oxide, and rare earth material.

[0174] In one embodiment, the tube body 110 is a hollow tubular structure, and the tube body 110 can be made of insulating material. For example, the tube body 110 can be a quartz tube, a ceramic tube or a mica tube, etc. Preferably, the tube body 110 can be a transparent quartz tube to facilitate the passage of infrared rays. Of course, the tube body 110 can also be made of non-insulating materials, such as stainless steel, aluminum and other metals. Please refer to Figures 10 and 11. When the tube body 110 is made of metal material, a first insulating layer 160 is further provided between the tube body 110 and the heating film, and the first insulating layer 160 is used to isolate the tube body 110 from the heating film.

[0175] In another embodiment of the present application, the aforementioned containment structure 101 can also be used to conduct heat directly to the aerosol-generating substrate 2000. In this case, the containment structure 101 includes a tubular body 110 but does not include a radiant layer 114. The tubular body 110 is made of a thermally conductive material, such as copper, aluminum, or stainless steel. Furthermore, in other embodiments, the upper containment structure 101 can also transfer heat to the aerosol-generating substrate 2000 via convection.

[0176] In another embodiment of the present application, please refer to Figures 18 and 19. The receiving structure 101 includes a tube body 110, the inner wall of the tube body 110 is affixed with a second insulating layer 180, and the heating film 120 is affixed to the inner wall of the second insulating layer 180. In this embodiment, by setting the heating film 120 on the inner side of the tube body 110, the heating path of the aerosol generating matrix 2000 by the heating film 120 is shortened, so that the heat transfer efficiency can be significantly improved, which is conducive to the rapid generation of aerosols and the stimulation of fragrance, and the utilization efficiency of the battery energy of the power supply component is improved. In addition, the provision of the second insulating layer 180 allows the heating film 120 and the tube body 110 to be insulated from each other.

[0177] In addition, in this embodiment, the heat-leveling layer 140 can be directly attached to the outer wall of the tube body 110 .

[0178] 18 and 19 , a wear-resistant protective layer 190 is provided on the inner side of the heating film 120. The wear-resistant protective layer 190 can prevent the heating film 120 from peeling off due to long-term insertion and removal of the aerosol generating matrix 2000.

[0179] Optionally, the wear-resistant protective layer 190 may be made of ceramic or glass, and the thickness of the wear-resistant protective layer 190 is less than 0.2 mm.

[0180] Optionally, the heating film 120 is made of a mixture of glass phase and metal phase, and the thickness of the heating film 120 is less than 0.3 mm.

[0181] Optionally, the second insulating layer 180 is made of ceramic or glass, and the thickness of the second insulating layer 180 is less than 0.2 mm.

[0182] Optionally, the tube body 110 is made of ceramic material, such as zirconium oxide or aluminum oxide; the thickness of the tube body 110 ranges from 0.1 mm to 0.8 mm.

[0183] Fourthly, the current heating assembly 1000 suffers from poor airflow stability during use, resulting in a poor puffing experience. To address this issue, referring to FIG. 20 , the heating assembly 1000 includes a container 102 for accommodating an aerosol-generating substrate 2000. The container 102 defines a chamber in which a support and gas-blocking member 200 and a base 300 are disposed. In an optional embodiment, the container 102 is provided with a heater 100. In an optional embodiment, the portion of the container 102 corresponding to the chamber is at least partially provided with the heater 100. Alternatively, in an optional embodiment, the container 102 includes a support member (not shown) and a heater 100. The chamber has two ends, with the base 300 disposed at one end and the support and gas-blocking member 200 disposed in the container chamber near the other end. At least one of the support and gas-blocking member 200 and the base 300 is formed with a gas cutoff opening.

[0184] Specifically, when the heating assembly 1000 is vertically positioned, the base 300 and the support and gas-blocking member 200 are respectively disposed at the bottom and top of the accommodating chamber. The base 300 and the support and gas-blocking member 200 not only support the aerosol-generating substrate 2000 but also form an airflow channel and achieve gas interception.

[0185] After the aerosol-generating substrate 2000 is inserted into the accommodating chamber, the accommodating member 102 is positioned over the aerosol-generating substrate 2000, forming a first gap a between the accommodating member 102 and the aerosol-generating substrate 2000. The heating element 100 heats the aerosol-generating substrate 2000 to generate aerosol. Simultaneously, external airflow enters the first gap a through the supporting air interceptor 200, passes through the base 300, and enters the aerosol-generating substrate 2000 from the distal lip end of the aerosol-generating substrate 2000, thereby carrying the aerosol out for inhalation by the user.

[0186] In the embodiment of the present application, the heating element 100 is provided within the receiving component 102. This allows airflow to flow between the receiving component 102, where the heating element 100 is provided, and the aerosol-generating substrate 2000. This allows the receiving component 102 to intercept the airflow, improving airflow stability. Furthermore, the airflow can be preheated before entering the aerosol-generating substrate, thereby improving aerosol generation efficiency. Furthermore, by providing an air cutoff port on at least one of the supporting air cutoff member 200 and the base 300, the airflow can be intercepted before and / or after passing through the heating element 100, further improving airflow stability and enhancing the inhalation experience of the aerosol-generating device.

[0187] In one embodiment, as shown in Figures 25 to 27 , a first air cutoff port 220 is formed on the support air cutoff member 200, and a second air cutoff port 323 is formed on the base 300. External airflow is first cut off at the first air cutoff port 220, then cut off at the first gap a, and finally cut off at the third air cutoff port, thereby ensuring airflow stability. It is understood that in other embodiments of the present application, only the first air cutoff port 220 may be provided, without cutting off air at the base 300; alternatively, air cutoff may be provided only at the base 300, without cutting off air at the support air cutoff member 200. This is not intended to be a limitation.

[0188] In one embodiment, the number of the first air cutoffs 220 ranges from 2 to 10; the opening cross-sectional area of ​​the first air cutoffs 220 ranges from 0.5 mm to 3.0 mm. Specifically, the number of the first air cutoffs 220 can be 2, 3, 4, 5, 6, 7, 8, 9, or 10, and the opening cross-sectional area of ​​the first air cutoffs 220 can be 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm. In this embodiment, by limiting the number range and the opening cross-sectional area range of the first air cutoffs 220, the setting of the first air cutoffs 220 can achieve the purpose of flow limitation. That is, during the design process, the number of the first air cutoffs 220 can be adjusted according to actual needs, and the appropriate opening cross-sectional area can be used to achieve the required flow rate, thereby improving the airflow stability while ensuring smooth airflow. It is understandable that in other embodiments of the present application, the number of the first air cutoff openings 220 may be one or greater than ten, and the opening cross-sectional area of ​​the first air cutoff openings 220 may be greater than 3 mm, or even greater, so that the airflow is not obstructed or restricted when passing through the supporting air cutoff member 200.

[0189] It should be noted that the opening cross-sectional area of ​​the first gas cut-off opening 220 refers to the cross-sectional area of ​​the first gas cut-off opening 220 along a radial plane parallel to the supporting gas cut-off member 200 .

[0190] In one embodiment, the number of the second air cutoffs 323 ranges from 2 to 10; the opening cross-sectional area of ​​the second air cutoffs 323 ranges from 0.5 mm to 3.0 mm. Specifically, the number of the second air cutoffs 323 can be 2, 3, 4, 5, 6, 7, 8, 9, or 10, and the opening cross-sectional area of ​​the second air cutoffs 323 can be 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm. In this embodiment, by limiting the number range and the opening cross-sectional area range of the second air cutoffs 323, the setting of the second air cutoffs 323 can achieve the purpose of flow limitation. That is, during the design process, the number of the second air cutoffs 323 can be adjusted according to actual needs, and the appropriate opening cross-sectional area can be used to achieve the required flow rate, thereby improving the airflow stability while ensuring smooth airflow. It is understandable that in other embodiments of the present application, the number of the second air cutoff openings 323 may be one or greater than ten, and the opening cross-sectional area of ​​the second air cutoff openings 323 may be greater than 3 mm, or even greater, so that the airflow is not obstructed or restricted when passing through the supporting air cutoff member 200.

[0191] It should be noted that the opening cross-sectional area of ​​the second air cutoff opening 323 refers to the cross-sectional area of ​​the second air cutoff opening 323 along a circumferential surface parallel to the base 300 .

[0192] In one embodiment, the number of first air cutoffs 220 ranges from 2 to 10, and the cross-sectional area of ​​the openings of the first air cutoffs 220 ranges from 0.5 mm to 3.0 mm. The number of second air cutoffs 323 ranges from 2 to 10, and the cross-sectional area of ​​the openings of the second air cutoffs 323 ranges from 0.5 mm to 3.0 mm. By simultaneously limiting flow at two locations, airflow regulation is achieved to improve airflow stability.

[0193] In one embodiment, referring to Figures 25 and 26 , the first cutoff opening 220 is formed as a recessed portion of the inner circumferential surface of the support and air-cutting member 200. This means that airflow passing through the first cutoff opening 220 directly contacts the outer circumferential wall of the aerosol-generating substrate 2000. In other embodiments of the present application, the first cutoff opening 220 may be formed between the inner and outer circumferential surfaces of the support and air-cutting member 200 rather than on the inner circumferential surface of the support and air-cutting member 200. This is not intended to be a limitation.

[0194] In one embodiment, referring to FIG. 25 and FIG. 26 , the first air cutoff opening 220 is semicircular in shape and has an arc-shaped surface to facilitate airflow.

[0195] In one embodiment, referring to Figure 20 , the support and air-cutting member 200 is configured to be sleeved outside the aerosol-generating substrate 2000; the inner circumferential surface of the support and air-cutting member 200 is configured to abut against the outer circumferential surface of the aerosol-generating substrate 2000. The inner circumferential surface of the support and air-cutting member 200 refers to the inner side surface of the support and air-cutting member 200 along the circumferential direction. In this embodiment, the inner circumferential surface of the support and air-cutting member 200 is positioned against the circumferential outer wall of the aerosol-generating substrate 2000, thereby ensuring the installation stability of the aerosol-generating substrate 2000. It is understood that in other embodiments of the present application, the support and air-cutting member 200 may also be composed of a plurality of stoppers disposed around the aerosol-generating substrate 2000, and this is not intended to be the sole limitation herein.

[0196] In one embodiment, referring to FIG20 , the support-and-cutoff member 200 is configured to be sleeved over the aerosol-generating substrate 2000; the inner circumferential surface of the support-and-cutoff member 200 is configured to abut the outer circumferential surface of the aerosol-generating substrate 2000; and the support-and-cutoff member 200 is coaxially disposed with the accommodating member 102. In this embodiment, by coaxially disposing the support-and-cutoff member 200 and the accommodating member 102, and by abutting the inner circumferential surface of the support-and-cutoff member 200 with the outer circumferential surface of the aerosol-generating substrate 2000, after the aerosol-generating substrate 2000 is inserted into the support-and-cutoff member 200, the support-and-cutoff member 200 and the aerosol-generating substrate 2000 are also coaxially disposed, thereby ensuring that the accommodating member 102 and the aerosol-generating substrate 2000 are coaxially disposed. That is, by providing the supporting air-cutting member 200, the centrality of the aerosol generating substrate 2000 in the accommodating component 102 can be improved, so that the gap between the outer peripheral wall of the aerosol generating substrate 2000 and the inner peripheral wall of the accommodating component 102 is evenly distributed in the axial and circumferential directions of the aerosol generating substrate 2000, which not only ensures the stability of the airflow but also ensures uniform heating of the aerosol generating substrate 2000.

[0197] In one embodiment, referring to Figures 22 and 26 , the base 300 has a support surface 321 facing the support cutoff member 200. The support surface 321 is concave to form a groove 322. A second gas cutoff opening 323 extends from the outer peripheral wall of the base 300 to the groove 322. When the aerosol-generating substrate 2000 is inserted into the accommodating chamber, the distal lip end of the aerosol-generating substrate 2000 abuts the support surface 321 of the support cutoff member 200. Airflow flowing to the bottom of the accommodating chamber enters the groove 322 through the second gas cutoff opening 323 and then enters the aerosol-generating substrate 2000 from the distal lip end.

[0198] In one embodiment, the support gas-cutting member 200 has a fitting surface 210, and the base 300 has a supporting surface 321; the fitting surface 210 is configured to fit and abut against the outer peripheral wall of the aerosol-generating substrate 2000 to radially limit the aerosol-generating substrate 2000; the supporting surface 321 is configured to abut against the axial end face of the aerosol-generating substrate 2000 to axially limit the aerosol-generating substrate 2000.

[0199] It should be noted that the outer peripheral wall of the aerosol-generating substrate 2000 refers to the outer peripheral wall of the aerosol-generating substrate 2000 along the circumference of the aerosol-generating substrate 2000. When the outer peripheral wall of the aerosol-generating substrate 2000 is in contact with the bonding surface 210, the aerosol-generating substrate 2000 cannot move in any radial direction, so the bonding surface 210 can radially limit the aerosol-generating substrate 2000.

[0200] In this embodiment, the aerosol-generating substrate 2000 can be radially limited by the contact surface 210, and the aerosol-generating substrate 2000 can be axially limited by the support surface 321. This ensures that, after the aerosol-generating substrate 2000 is inserted into the accommodating component 102, the aerosol-generating substrate 2000 does not change position during the heating process. This improves the consistency of the heating effect of the aerosol-generating substrate 2000 during the heating process, thereby improving the consistency of the puffing of the aerosol-generating substrate 2000. In addition, after the aerosol-generating substrate 2000 is stabilized in the accommodating component 102, the gap between the aerosol-generating substrate 2000 and the inner wall of the accommodating component 102 can also be maintained consistently, thereby improving the consistency of air intake from the bottom of the aerosol-generating substrate 2000, thereby ensuring the consistency of the puffing effect of the aerosol-generating substrate 2000.

[0201] In one embodiment, referring to FIG. 21 , aerosol-generating substrate 2000 includes a substrate segment 2100 . Substrate segment 2100 stores an aerosol-generating substrate. The aerosol-generating substrate is a solid substrate of plant leaves having a specific aroma and capable of generating an aerosol when heated. The aerosol-generating substrate may be in the form of an ordered solid aerosol-generating substrate, a disordered solid aerosol-generating substrate, or a particulate solid aerosol-generating substrate. When powered, heating assembly 1000 heats and bakes the aerosol-generating substrate in substrate segment 2100 of aerosol-generating substrate 2000 to generate an aerosol.

[0202] In one embodiment, referring to Figure 21 , aerosol-generating substrate 2000 further includes a hollow section 2200, a cooling section 2300, and a filter section 2400. Hollow section 2200 and cooling section 2300 are disposed between substrate section 2100 and filter section 2400, with hollow section 2200 located at one end of cooling section 2300 proximal to substrate section 2100. Aerosol generated by heating the aerosol-generating substrate 2000 accumulates in hollow section 2200, is cooled by cooling section 2300, and ultimately flows through filter section 2400 to be inhaled by the user.

[0203] It should be noted that the aforementioned hollow section 2200 and cooling section 2300 are optional structures. The only required structure of the aerosol-generating matrix 2000 is the matrix section 2100, which is used to generate the aerosol for inhalation by the user. In other embodiments, the aerosol-generating matrix 2000 may include the matrix section 2100 and the filter section 2400; alternatively, the aerosol-generating matrix 2000 may include the matrix section 2100, the hollow section 2200, and the filter section 2400; alternatively, the aerosol-generating matrix 2000 may include, in addition to the matrix section 2100, the hollow section 2200, the cooling section 2300, and the filter section 2400, other structures that enhance the user experience.

[0204] In one embodiment, referring to FIG. 21 , a receiving component 102 equipped with a heating element 100 is at least sheathed around a substrate segment 2100 of an aerosol-generating substrate 2000 to heat the substrate segment 2100. By completely sheathing the substrate segment 2100 of the aerosol-generating substrate 2000 with the receiving component 102 equipped with the heating element 100, the substrate segment 2100 can be fully heated, ensuring that the substrate segment 2100 can generate aerosol sufficiently and stably.

[0205] In one embodiment, referring to Figure 21 , the portion of the receiving component 102 provided with the heating element 100 is sheathed over the substrate segment 2100 and a portion of the hollow segment 2200. The cooling segment 2300 and the filter segment 2400 of the aerosol-generating substrate 2000 extend outside the receiving component 102 to prevent heat buildup within the receiving component 102 from affecting the cooling effect of the cooling segment 2300.

[0206] In one embodiment, referring to FIG20 , the support gas interceptor 200 and the base 300 are respectively located at the axial ends of the portion of the accommodating component 102 where the heater 100 is disposed. For the aerosol-generating substrate 2000, the primary heating portion is located in the substrate segment 2100, while the portion of the accommodating component 102 where the heater 100 is disposed is also disposed outside the substrate segment 2100. If the substrate segment 2100 is not securely mounted within the portion of the accommodating component 102 where the heater 100 is disposed, the substrate segment 2100 may tilt within the accommodating component 102. This may result in some portions of the substrate segment 2100 being overheated while others are underheated, leading to uneven heating. This may also lead to an inconsistent gap between the substrate segment 2100 and the accommodating component 102, causing blockages in some locations and affecting airflow stability. In this embodiment, by locating the support and air-blocking member 200 and the base 300 at the axial ends of the accommodating member 102, respectively, the mounting stability of the substrate segment 2100 relative to the accommodating member 102 is ensured. This maintains the gap between the substrate segment 2100 and the accommodating member 102, resulting in uniform heating distribution of the substrate segment 2100 and smooth airflow, thereby ensuring stable suction. It is understood that in other embodiments of the present application, the support and air-blocking member 200 and the base 300 may also be located at the same end of the accommodating member 102 where the heating element 100 is located. For example, the support and air-blocking member 200 and the base 300 may both be located below the heating element 100. Any such arrangement is acceptable as long as the aerosol-generating substrate 2000 can be stably positioned.

[0207] In one embodiment, referring to Figures 22 and 23 , the heating assembly 1000 further includes a positioning member 400. The positioning member 400 is detachably connected to the accommodating member 102. The positioning member 400 and the base 300 are respectively disposed at the axial ends of the portion of the accommodating member 102 where the heating member 100 is disposed. The positioning member 400 and the base 300 are respectively used to axially and radially position the axial ends of the portion of the accommodating member 102 where the heating member 100 is disposed. By axially and circumferentially limiting the axial ends of the portion of the accommodating member 102 where the heating member 100 is disposed, the installation stability of the heating member 100 in the accommodating member 102 is ensured, thereby improving the relative stability between the heating member 100 and the aerosol generating substrate 2000, ensuring consistent heating and air intake of the aerosol generating substrate 2000, and thus ensuring consistent inhalation effects.

[0208] In one embodiment, referring to Figures 20 and 24, the bottom end of the portion of the accommodating component 102 on which the heating element 100 is provided is sleeved on the base 300, and the bottom end of the portion of the accommodating component 102 on which the heating element 100 is provided is abutted against the base 300, thereby radially and axially limiting the bottom end of the portion of the accommodating component 102 on which the heating element 100 is provided through the base 300.

[0209] In one embodiment, referring to Figures 24 and 27 , the base 300 includes a bottom plate 310 and a protruding post 320 protruding from the center of one side of the bottom plate 310. The bottom end of the portion of the accommodating component 102 where the heating element 100 is disposed is sleeved onto the protruding post 320, and the bottom end surface of the portion of the accommodating component 102 where the heating element 100 is disposed abuts against the bottom plate 310, thereby preventing the heating element 100 from shifting on the base 300.

[0210] In one embodiment, referring to Figures 22 and 23 , the positioning member 400 is sleeved over the aerosol generating substrate 2000. A limiting groove 421 is formed on the inner wall of the bottom end of the positioning member 400. The limiting groove 421 has a first abutting surface 4211 facing the heater 100 and a second abutting surface 4212 perpendicularly connected to the first abutting surface 4211. The second abutting surface 4212 sleeves over the top of the portion of the accommodating component 102 where the heater 100 is located. The second abutting surface 4212 abuts against at least a portion of the outer peripheral wall of the top of the portion of the accommodating component 102 where the heater 100 is located, thereby radially and axially limiting the top of the portion of the accommodating component 102 where the heater 100 is located.

[0211] In one embodiment, referring to Figures 22 and 23 , the positioning member 400 includes a top plate 410 and a raised ring 420 formed on the bottom side of the top plate 410. The top plate 410 is fixed to the top end surface of the accommodating component 102. The raised ring 420 is inserted into the accommodating component 102 and sleeved over the aerosol-generating substrate 2000. A retaining groove 421 is formed on the inner sidewall of the bottom end of the raised ring 420.

[0212] In one embodiment, the supporting gas-cutting member 200 is mounted on the positioning member 400. The supporting gas-cutting member 200 is engaged with the positioning member 400.

[0213] In one embodiment, referring to Figure 28, the size of the portion of the accommodating component 102 where the heating element 100 is provided along the first direction Y1 is larger than the size of the portion of the accommodating component 102 where the heating element 100 is provided along the second direction Y2; the size of the portion of the accommodating component 102 where the heating element 100 is provided along the second direction Y2 is set to be smaller than the outer diameter of the aerosol generating matrix 2000; the first direction Y1 and the second direction Y2 are respectively perpendicular to the axial direction of the accommodating component 102.

[0214] The portion of the accommodating component 102 provided with the heating element 100 is dimensioned in the second direction Y2 to be smaller than the outer diameter of the aerosol-generating substrate 2000. Therefore, when the aerosol-generating substrate 2000 is inserted into the portion of the accommodating component 102 provided with the heating element 100, the sidewall of the portion of the accommodating component 102 provided with the heating element 100 along the second direction Y2 will squeeze the aerosol-generating substrate 2000, thereby ensuring sufficient contact between the portion of the accommodating component 102 provided with the heating element 100 and the aerosol-generating substrate 2000. This allows the heat generated by the portion of the accommodating component 102 provided with the heating element 100 to be quickly and efficiently transferred to the aerosol-generating substrate 2000, thereby ensuring a heating effect on the aerosol-generating substrate 2000. Furthermore, the portion of the accommodating component 102 provided with the heating element 100 can also be used to position the aerosol-generating substrate 2000 for installation, thereby ensuring the stability of the aerosol-generating substrate 2000 within the portion of the accommodating component 102 provided with the heating element 100.

[0215] In addition, the size of the portion of the accommodating component 102 on which the heating element 100 is provided along the first direction Y1 is larger than the size of the heating element 100 along the second direction Y2, so that when the portion of the accommodating component 102 on which the heating element 100 is provided squeezes the aerosol generating matrix 2000 along the second direction Y2, although the aerosol generating matrix 2000 is deformed in the first direction Y1, a first gap a can still be formed between the aerosol generating matrix 2000 and the portion of the accommodating component 102 on which the heating element 100 is provided along the first direction Y1 for airflow to flow through.

[0216] The first direction Y1 and the second direction Y2 are both perpendicular to the axial direction of the portion of the accommodating component 102 where the heating element 100 is disposed. The first direction Y1 and the second direction Y2 are perpendicular to each other.

[0217] In one embodiment, referring to Figures 20 and 21 , a plurality of air holes 2210 are formed in the hollow section 2200 of the aerosol-generating substrate 2000. When the external airflow enters the accommodating component 102, a portion thereof enters the hollow section 2200 through the air holes 2210. In the present application, because the portion of the accommodating component 102 provided with the heating element 100 is disposed outside the substrate section 2100 of the aerosol-generating substrate 2000, the airflow passes through the portion of the accommodating component 102 provided with the heating element 100 before entering the substrate section 2100. This results in a higher temperature of the airflow entering the substrate section 2100. The high-temperature airflow carries away the aerosol generated by the substrate section 2100, which cools down more slowly and can easily cause mouth burns. The airflow introduced into the hollow section 2200 is a low-temperature airflow, which can heat the cooling of the aerosol and reduce mouth burns.

[0218] The above are merely optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included within the scope of the claims of the present application.

Claims

1. A heating assembly for heating a substrate segment so that the substrate segment does not burn but produces atomized gas, characterized in that: The heating assembly comprises a heating element, which is sleeved outside the matrix segment, and the length of the heating element is smaller than the length of the matrix segment.

2. The heating assembly according to claim 1, characterized in that The heating assembly further comprises a connecting member disposed at at least one end of the heating element, wherein the thermal conductivity of the connecting member is lower than the thermal conductivity of the heating element.

3. The heating assembly according to claim 2, characterized in that The connecting piece is a plastic piece.

4. The heating assembly according to claim 2, characterized in that: The connecting element is connected to the heating element by thermal melting.

5. The heating assembly according to claim 4, characterized in that The connecting member includes an end connected to the heating member, and the hot melt connection between the connecting member and the heating member is that the end of the connecting member is wrapped around the end of the heating member, and / or the end of the connecting member is wrapped by the end of the heating member.

6. The heating assembly according to any one of claims 2 to 5, characterized in that: A first connecting member and a second connecting member are respectively provided at opposite ends of the heating member, and a groove is concavely provided at the bottom end of at least one of the connecting members, and a heat insulating layer is provided in the groove.

7. The heating assembly according to any one of claim 6, characterized in that: The first connecting member is a hollow structure for inserting the matrix segment therein, the lower end of the first connecting member is connected to the upper end of the heating member, the upper end of the second connecting member is connected to the lower end of the heating member; the bottom end of the second connecting member is provided with the groove.

8. An aerosol generating device, characterized in that: Comprising an aerosol-generating substrate and a heating assembly as described in any one of claims 1 to 7; the aerosol-generating substrate comprises the substrate segment.

9. The aerosol generating device according to claim 8, characterized in that: The aerosol generating matrix is ​​inserted into the heating element from top to bottom; a plane rectangular coordinate system is established with the center point of the upper end of the matrix segment as the coordinate origin, the direction passing through the center point of the upper end of the matrix segment and perpendicular to the length of the matrix segment as the Y-axis direction, and the axial direction from the upper end to the lower end of the matrix segment as the positive direction of the X-axis; the length of the matrix segment is defined as L, and the X-coordinate range of the plane where the lower end surface of the heating element is located and intersecting with the positive direction of the X-axis is 0.5L~L; the tube length range of the heating element is 0.5L~1.1L.

10. The aerosol generating device according to claim 8 or 9, characterized in that: There is a gap between the substrate segment and the heating element.

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