Aerosol-generating system, aerosol-generating device and heating assembly

Abstract

The utility model relates to an aerosol generating system, an aerosol generating device and a heating assembly. The aerosol generating system comprises an aerosol generating device and an aerosol generating article. The aerosol generating article comprises a medium section and a first functional section located at the downstream end of the medium section. The aerosol generating device comprises a heating assembly, which comprises: a base tube comprising a heating section and a first extension section located at the downstream end of the heating section; and a heating layer arranged on the heating section. The first extension section is configured to wrap at least part of the first functional section. When the heating layer is powered and heated, the heat generated by the heating layer can be transmitted to the first functional section through the first extension section, so that the temperature of the first functional section is between 60 DEG C and 250 DEG C, and the condensation of aerosol in the first functional section can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of aerosol generation technology, and in particular to an aerosol generation system, an aerosol generation device, and a heating component. Background Technology

[0002] Aerosol generating devices are used to heat the aerosol generating medium of aerosol-generating products (such as tobacco products) to produce an aerosol for users to inhale. Existing heating elements for heating solid media are typically the same length as the solid media being heated. However, during inhalation, the atomized medium, once it exceeds the coverage area of ​​the heating element, easily condenses in the air passage of the functional section, reducing the effective utilization rate of the medium and causing condensate to flow back into the aerosol generating device, leading to cleaning difficulties. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an improved heating component, an aerosol generating device having the heating component, and an aerosol generating system having the aerosol generating device, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a heating component is provided for an aerosol generating device, the aerosol generating device being used to heat an aerosol generating product, the aerosol generating product including a medium section and a first functional section located at the downstream end of the medium section, the heating component including: a base tube, the base tube having a receiving cavity formed therein for accommodating at least a portion of the aerosol generating product, the base tube including a heating section and a first extension section located at the downstream end of the heating section; and a heating layer disposed in the heating section;

[0005] The first extension is configured to enclose at least a portion of the first functional segment, such that when the heating layer is energized and heated, the temperature of the first functional segment is between 60°C and 250°C.

[0006] In some embodiments, the aerosol generating article includes a second functional section located upstream of the medium section; the base tube includes a second extension section located upstream of the heating section, the second extension section being configured to enclose at least a portion of the second functional section such that when the heating layer is energized and heated, the temperature of the second functional section is between 60°C and 250°C.

[0007] In some embodiments, the second extension section is a metallic or inorganic material, and the thermal conductivity of the second extension section is greater than or equal to 5 W / (m*K).

[0008] In some embodiments, the first extension segment and the second extension segment are not provided with the heating layer.

[0009] In some embodiments, the second extension is configured to enclose 30% to 90% of the second functional segment.

[0010] In some embodiments, the first extension segment is configured to enclose 30% to 90% of the first functional segment.

[0011] In some embodiments, the first extension section is a metallic or inorganic material, and the thermal conductivity of the first extension section is greater than or equal to 5 W / (m*K).

[0012] In some embodiments, the heating layer includes at least three heating units arranged in parallel.

[0013] In some embodiments, the heating temperature of the heating unit closest to the second extension section or the first extension section among the at least three heating units is 200°C to 350°C.

[0014] In some embodiments, the at least three heating units are spaced apart along the axial direction of the heating section.

[0015] In some embodiments, the heating component includes: an insulating layer disposed outside the base tube; and at least four conductive units.

[0016] The at least three heating units are disposed on the inner side of the isolation layer, and the at least four conductive units are disposed on the outer side of the isolation layer. Each heating unit is electrically connected to two conductive units respectively.

[0017] This utility model also provides an aerosol generating device, including a heating component as described in any of the above claims and a control circuit connected to the heating layer of the heating component.

[0018] This utility model also provides an aerosol generation system, including the aerosol generation device as described above and an aerosol generation product matched with the aerosol generation device.

[0019] The aerosol generation system, aerosol generation device, and heating component of this utility model have at least the following beneficial effects: When the heating layer of the heating component of this utility model is energized and heated, the heat generated by the heating layer can be transferred to the first extension section through the heating section by heat conduction. The first extension section then transfers the heat to the first functional section by heat conduction, thus keeping the first functional section warm and maintaining its temperature between 60°C and 250°C. This reduces the condensation of aerosols in the first functional section, improves the utilization rate of the medium, and achieves better consistency in taste. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the aerosol generation system in some embodiments of this utility model;

[0022] Figure 2 yes Figure 1 A schematic diagram of the longitudinal cross-sectional structure of the aerosol generation system shown.

[0023] Figure 3 yes Figure 2 A schematic diagram of the longitudinal cross-sectional structure of the heating element containing the aerosol-generated product.

[0024] Figure 4 yes Figure 3 A schematic diagram of the longitudinal cross-sectional structure of the heating element;

[0025] Figure 5 yes Figure 4 A schematic diagram showing the distribution of heating units on the base tube of the heating component.

[0026] Figure 6 yes Figure 4 The exploded structural diagram of the heating component is shown.

[0027] Figure 7 This is a numerical simulation temperature cloud map of the temperature distribution of aerosol-generated products when the extended section of the heating component adopts different coverage ratios.

[0028] Figure 8 This is a numerical simulation temperature cloud map of the temperature distribution of aerosol-generated products when the heating unit of the heating component adopts different temperatures. Detailed Implementation

[0029] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] The terms "longitudinal", "lateral", "up", "down", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, four, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] Figures 1 to 2 An aerosol generation system 1 according to some embodiments of the present invention is shown. The aerosol generation system 1 may include an aerosol generation device 100 and an aerosol generation article 200. The aerosol generation article 200 is movably inserted into the aerosol generation device 100, facilitating removal and replacement with a new aerosol generation article 200 after heating is complete. The aerosol generation device 100 can heat the aerosol generation article 200 inserted therein after being powered on, to release the aerosol extract in the aerosol generation article 200 in a non-combustible state.

[0035] In some embodiments, the aerosol generating article 200 may be cylindrical. Of course, in other embodiments, the aerosol generating article 200 may also be elliptical, polygonal, or other columnar shapes.

[0036] The aerosol generating apparatus 100 may include a housing 30 and a heating element 10 disposed in the housing 30. The heating element 10 is used to heat the aerosol generating article 200, which is at least partially inserted into the aerosol generating apparatus 100, after being powered on.

[0037] One end of the outer casing 30 has a socket 320 for inserting the aerosol generating article 200. The shape of the socket 320 can be adapted to the cross-sectional shape of the aerosol generating article 200; for example, the socket 320 is circular. Of course, the socket 320 can also be roughly circular or other shapes, as long as it allows the aerosol generating article 200 to pass through.

[0038] When the aerosol generating product 200 is inserted into the aerosol generating device 100, one end (suction end) of the aerosol generating product 200 can be partially exposed outside the outer casing 30 for easy suction by the user.

[0039] In some embodiments, the aerosol generating device 100 further includes a battery cell 60 and a circuit board 50 disposed in the housing 30. A control circuit is disposed on the circuit board 50, and the control circuit is electrically connected to both the battery cell 60 and the heating element 10 to control the power supply between the battery cell 60 and the heating element 10. Furthermore, the control circuit can also control the power output of the battery cell 60 to the heating element 10.

[0040] like Figures 3 to 6 As shown, the aerosol generating article 200 may include a medium segment 220 and two functional segments (a first functional segment 230 and a second functional segment 210) located at opposite ends of the medium segment 220. The first functional segment 230 is located downstream of the medium segment 220, and the second functional segment 210 is located upstream of the medium segment 220. In other embodiments, the second functional segment 210 may be omitted.

[0041] In this invention, the terms "upstream end" and "downstream end" describe the relative positions of components or parts of components in the aerosol generation system 1 based on the direction of airflow during suction. The end through which the airflow first passes is the upstream end, and the end through which the airflow passes later is the downstream end.

[0042] The medium section 220 is used to generate aerosols upon heating, and includes an aerosol generating medium. The aerosol generating medium may include solid materials in the form of strips, flakes, or granules made from the leaves and / or stems of plants (such as tobacco or tea), and aroma components may be further added to the solid material.

[0043] The second functional section 210 can be a plug section. The second functional section 210 is located at the end of the medium section 220 away from the suction end, and it can absorb the reflux condensate. In addition, the end of the aerosol generating product 200 inserted into the aerosol generating device 100 is sealed by the second functional section 210, so that the residue of the aerosol generating medium will not fall and contaminate the aerosol generating device 100.

[0044] The second functional section 210 can be made of a porous material, allowing outside air to flow into the medium section 220 through the second functional section 210, carrying away the aerosol generated after the medium section 220 is heated. Of course, in other embodiments, the second functional section 210 can also be made of a non-porous material, which can form air passages for airflow through micromachining or other methods.

[0045] The first functional section 230 is located at the end of the medium section 220 facing the suction end, and its functions may include, but are not limited to, cooling the atomized aerosol, adjusting flavor substances, filtering aerosol components, or adjusting airflow.

[0046] The heating element 10 is tubular, such as cylindrical, and may include a base tube 11 and a heating layer 12. The base tube 11 carries the heating layer 12 and defines a receiving cavity 110 for accommodating at least a portion of the aerosol-generating article 200. The heating layer 12 generates heat upon energization to heat the aerosol-generating article 200 housed in the receiving cavity 110.

[0047] The end of the base tube 11 facing the socket 320 may also have a flared structure 114. The inner radial direction of the flared structure 114 gradually increases towards the socket 320, which can facilitate the smooth insertion of the aerosol-generated product 200.

[0048] The heating layer 12 may be disposed on the inner and / or outer side of the base tube 11. In this embodiment, the heating layer 12 is disposed on the outer side of the base tube 11. After the heating layer 12 is energized and generates heat, it transfers heat to the base tube 11 and then to the aerosol generating article 200 contained in the base tube 11.

[0049] The heating layer 12 can be a heating film formed by screen printing or deposition, or it can be a mesh, array or fabric formed by conductive wires or conductive sheets.

[0050] In some embodiments, the heating layer 12 may include at least one heating unit 120, each heating unit 120 being individually connected to a control circuit, the control circuit being able to individually control the energization and de-energization of each heating unit 120. Preferably, there are multiple heating units 120 (e.g., two, three, or more), and the multiple heating units 120 can be connected to the control circuit in parallel, enabling zoned heating of the aerosol generating article 200. The multiple heating units 120 can be spaced apart in the axial and / or circumferential directions of the base tube 11.

[0051] In some embodiments, the heating component 10 may further include an insulating layer 13, at least two conductive units 14, and at least two electrodes 15. Each heating unit 120 is connected to two conductive units 14, and the at least two conductive units 14 are connected one-to-one with the at least two electrodes 15, thereby electrically connecting the heating unit 120 to the control circuit through the conductive units 14 and the electrodes 15. The electrodes 15 may be electrode leads, electrode sheets, electrode posts, or other electrode connection structures.

[0052] An insulating layer 13 is fitted over the base tube 11. The insulating layer 13 is made of insulating material and is used to support the heating unit 120 and the conductive unit 14. The heating unit 120 is disposed on the inner side of the insulating layer 13, and the conductive unit 14 is disposed on the outer side of the insulating layer 13. The connection between the heating unit 120 and the conductive unit 14 can be achieved by drilling holes in the insulating layer 13.

[0053] By placing the heating unit 120 and the conductive unit 14 on different sides of the insulating layer 13, the placement space for at least one heating unit 120 can be increased, the heating area can be increased, the heating consistency can be improved, and the consistency of the suction feel can be improved. In addition, the heating unit 120 is placed on the inner side of the insulating layer 13, which can isolate the heating unit 120 from the outside air, thereby reducing the corrosive effect of oxygen and impurities on the heating unit 120.

[0054] In some embodiments, the conductive unit 14 may also have a high thermal conductivity. For example, the conductive unit 14 may be made of pure silver. With appropriate shape design, it can also play a role in heat equalization, thereby reducing the temperature difference of the heating unit 120 and equalizing the heat.

[0055] In some embodiments, one pole of each of the plurality of heating units 120 is connected to the same conductive unit 14, and the other pole of each of the plurality of heating units 120 is connected to other conductive units 14 respectively. In this way, the number of conductive units 14 required can be reduced. Specifically, the number of conductive units 14 only needs to be one more than the number of heating units 120, and the number of electrodes 15 is equal to the number of conductive units 14.

[0056] For example, in this embodiment, there are three heating units 120, namely a first heating unit 121, a second heating unit 122, and a third heating unit 123; and four conductive units 14, namely a first conductive unit 141, a second conductive unit 142, a third conductive unit 143, and a fourth conductive unit 144. The first heating unit 121, the second heating unit 122, and the third heating unit 123 are distributed sequentially at intervals along the axial direction of the base tube 11. One pole of each of the first heating unit 121, the second heating unit 122, and the third heating unit 123 is connected to the first conductive unit 141, and the other pole of each of the first heating unit 121, the second heating unit 122, and the third heating unit 123 is connected to the second conductive unit 142, the third conductive unit 143, and the fourth conductive unit 144, respectively.

[0057] When preparing the heating element 10, a sheet-like insulating layer 13 can be prepared first by a process such as casting molding. A heating unit 120 is printed on one side of the sheet-like insulating layer 13, and a conductive unit 14 is printed on the other side of the sheet-like insulating layer 13. Then, the sheet-like insulating layer 13 with the heating unit 120 and the conductive unit 14 printed on it is wound onto the base tube 11 and sintered.

[0058] Of course, in other embodiments, the heating component 10 may not have the isolation layer 13 and the conductive unit 14. The heating unit 120 may be directly fabricated on the base tube 11 and directly connected to the control circuit through the electrode 15.

[0059] The base tube 11 includes a heating section 112 and two extension sections (a first extension section 113 and a second extension section 111) located at both ends of the heating section 112. The first extension section 113 is located downstream of the heating section 112, and the second extension section 111 is located upstream of the heating section 112. When the aerosol generating article 200 is inserted into the heating component 10, the first extension section 113 can enclose at least a portion of the first functional section 230, and the second extension section 111 can enclose at least a portion of the second functional section 210.

[0060] Understandably, in other embodiments, when the aerosol generating article 200 does not include the second functional segment 210, the second extension segment 111 may be omitted accordingly.

[0061] The inner diameters of the second extension section 111, the heating section 112, and the first extension section 113 are respectively adapted to the outer diameters of the second functional section 210, the medium section 220, and the first functional section 230, so that heat can be transferred to the second functional section 210, the medium section 220, and the first functional section 230 through contact.

[0062] The first extension segment 113 and the second extension segment 111 are respectively connected to both ends of the heating segment 112, so that the heat from the heating segment 112 can be transferred to the first extension segment 113 and the second extension segment 111 at both ends. The material of the first extension segment 113 and / or the second extension segment 111 may be the same as or different from the material of the heating segment 112. The first extension segment 113 and / or the second extension segment 111 may be integrally formed with the heating segment 112, or it may be formed in a secondary manner based on the heating segment 112.

[0063] A heating layer 12 is disposed on the heating section 112. When the heating layer 12 is energized and generates heat, the heat generated by the heating layer 12 can be transferred through the heating section 112 to the first extension section 113 and the second extension section 111 via thermal conduction. The first extension section 113 and the second extension section 111 then transfer the heat to the first functional section 230 and the second functional section 210 via thermal conduction, respectively, to keep the first functional section 230 and the second functional section 210 at a temperature of 60℃ to 250℃, preferably 120℃ to 170℃. This reduces the condensation of aerosols in the first functional section 230 and the second functional section 210, improves the utilization rate of the medium, and achieves better consistency in taste. It also reduces the backflow of condensate to the aerosol generating device 100. In addition, this solution does not require an additional heating layer on the first extension section 113 and the second extension section 111, thereby avoiding additional costs and improving manufacturability. Of course, in other embodiments, without considering cost and structural complexity, a heating layer may also be provided on the first extension 113 or the second extension 111.

[0064] To ensure that the functional section reaches the target temperature, the following factors can be adjusted: (1) the material of the extension section; (2) the coverage ratio of the extension section; and (3) the temperature of the heating unit 120 closest to the extension section.

[0065] The material of the extension section can be a metal (such as stainless steel, aluminum, silver, etc.) or other inorganic materials (such as ceramic or glass materials).

[0066] In some embodiments, the thermal conductivity of the extension section can be greater than or equal to 5 W / (m*K). A higher thermal conductivity in the extension section results in a better temperature increase for the functional section. For example, when the material of the extension section is changed from 316L stainless steel (thermal conductivity 16.3 W / (m*K)) to silver (thermal conductivity 429 W / (m*K)), according to the heat conduction formula Q=ΔT*k*Ac / L, where ΔT is the temperature difference (K), k is the thermal conductivity (W / m·K), L is the heat conduction distance (m), and Ac is the cross-sectional area of ​​the object through which the heat is transferred (m²). 2The heat passing through a given cross section per unit time will increase by 25-26 times, and the temperature increase effect of the extension section and functional section will be significantly increased.

[0067] The greater the coverage ratio (the ratio of the length of the extension segment to the length of the corresponding functional segment), the better the temperature improvement effect on the functional segment. In some embodiments, the coverage ratio of each extension segment can be 30% to 90%, that is, the ratio of the length of each extension segment to the length of the corresponding functional segment is 30% to 90%, or it can be said that each extension segment can cover / enclose 30% to 90% of the corresponding functional segment. Specifically, the length ratio of the first extension segment 113 to the length of the first functional segment 230 is 30% to 90%, and the length ratio of the second extension segment 111 to the length of the second functional segment 210 is 30% to 90%.

[0068] Figure 7 The numerical simulation temperature contour maps of the temperature distribution within the medium layer and functional layer during the first suction are shown. In Figure (a), the coverage ratio of the first extension segment 113 and the second extension segment 111 is 0.3, and in Figure (b), the coverage ratio of the first extension segment 113 and the second extension segment 111 is 0.6. Figure 7 It can be seen that, under the same heating strategy, when the coverage ratio is 0.6, the average temperature of the functional section is about 150℃, while when the coverage ratio is 0.3, the average temperature of the functional section is only 85℃.

[0069] The higher the temperature of the heating unit 120 closest to the extension section, the better the temperature improvement effect on the functional section. Specifically, such as... Figure 3 , Figure 5 As shown, the first heating unit 121, the second heating unit 122, and the third heating unit 123 are arranged sequentially along the axial direction of the base tube 11. The first heating unit 121 is closest to the second functional section 210. A higher temperature in the first heating unit 121 results in a better temperature increase for the second functional section 210. The temperature range of the first heating unit 121 is 200℃ to 350℃. The third heating unit 123 is closest to the first functional section 230. A higher temperature in the third heating unit 123 results in a better temperature increase for the first functional section 230. The temperature range of the third heating unit 123 is also 200℃ to 350℃.

[0070] Figure 8 The numerical simulation temperature cloud maps of the temperature distribution within the medium layer and functional layer during the first suction are shown. In Figure (a), the temperature of the third heating unit 123 is 275℃, and in Figure (b), the temperature of the third heating unit 123 is 250℃. Figure 8It can be seen that, under the same coverage ratio (coverage ratio of 0.6), when the third heating unit 123 is 250°C, the average temperature of the first functional section 230 is about 150°C, while when the third heating unit 123 is 275°C, the average temperature of the first functional section 230 is about 195°C.

[0071] To ensure that the first functional segment 230 and the second functional segment 210 can reach the target temperature range, the first heating unit 121 and the third heating unit 123 can be continuously heated during the suction process.

[0072] For example Figure 2 As shown, in some embodiments, the aerosol generating device 100 may further include at least one heat insulation layer 20 (e.g., cylindrical aerogel) disposed outside the heating component 10, the heat insulation layer 20 being able to reduce the heat transferred from the heating component 10 to the outer casing 30.

[0073] In some embodiments, the outer casing 30 is provided with an air inlet 310. The aerosol generating device 100 may also include an air inlet pipe 40, the inner wall of which defines an air inlet channel 410. The lower end of the heating element 10 may be embedded in the upper end of the air inlet pipe 40. Of course, in other embodiments, the lower end of the heating element 10 may also be sleeved outside the upper end of the air inlet pipe 40, or the lower end face of the heating element 10 may abut against the upper end face of the air inlet pipe 40. Outside air can enter the bottom (plug section) of the aerosol generating article 200 sequentially through the air inlet 310 and the air inlet channel 410.

[0074] The air inlet 310 can be located on the bottom wall of the housing 30, and the air inlet pipe 40 can be located below the heating element 10 and can be coaxially arranged with the heating element 10. Of course, in other embodiments, the heating element 10 can also be located on the side wall, top wall, or any other location of the housing 30.

[0075] The above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A heating element for an aerosol generating apparatus (100), the aerosol generating apparatus (100) being used to heat an aerosol generating article (200), the aerosol generating article (200) comprising a medium section (220) and a first functional section (230) located downstream of the medium section (220), characterized in that, The heating component (10) includes: A base tube (11) having a receiving cavity (110) formed therein for accommodating at least a portion of the aerosol-generating article (200), the base tube (11) including a heating section (112) and a first extension section (113) located at the downstream end of the heating section (112); and A heating layer (12) is disposed in the heating section (112); The first extension segment (113) is configured to enclose at least a portion of the first functional segment (230) such that when the heating layer (12) is energized and heated, the temperature of the first functional segment (230) is between 60°C and 250°C.

2. The heating component according to claim 1, characterized in that, The aerosol generating article (200) includes a second functional section (210) located at the upstream end of the medium section (220). The base tube (11) includes a second extension (111) located at the upstream end of the heating section (112). The second extension segment (111) is configured to enclose at least a portion of the second functional segment (210) such that when the heating layer (12) is energized and heated, the temperature of the second functional segment (210) is between 60°C and 250°C.

3. The heating component according to claim 2, characterized in that, The first extension section (113) and the second extension section (111) are not provided with the heating layer (12).

4. The heating component according to claim 2, characterized in that, The second extension segment (111) is configured to enclose 30% to 90% of the second functional segment (210).

5. The heating component according to claim 1, characterized in that, The first extension segment (113) is configured to enclose 30% to 90% of the first functional segment (230).

6. The heating component according to claim 1, characterized in that, The first extension segment (113) is made of metallic or inorganic material. The thermal conductivity of the first extension section (113) is greater than or equal to 5 W / (m*K).

7. The heating component according to claim 1, characterized in that, The heating layer (12) includes at least three heating units (120) arranged in parallel.

8. The heating element according to claim 7, characterized in that, The at least three heating units (120) are spaced apart along the axial direction of the heating section (112). The heating temperature of the heating unit (120) closest to the first extension section (113) among the at least three heating units (120) is 200°C to 350°C.

9. An aerosol generating device, characterized in that, It includes a heating element (10) as described in any one of claims 1-8 and a control circuit connected to the heating layer (12) of the heating element (10).

10. An aerosol generation system, characterized in that, It includes the aerosol generating apparatus (100) as described in claim 9 and the aerosol generating article (200) that is compatible with the aerosol generating apparatus (100).

Images