A heating assembly and an aerosol-generating device

Abstract

The application provides a heating assembly and an aerosol generating device, comprising a substrate and a conductive track, the substrate having a heating area; the conductive track is arranged in the heating area; the substrate and the conductive track are used for at least partially inserting an aerosol generating substrate, so that the conductive track generates heat under the condition of being electrified and heats the aerosol generating substrate; wherein the conductive track is configured to form at least two high-temperature zones in the heating area under the condition of being electrified, so that the heating of the heating assembly is more uniform, and the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of atomization, and in particular to a heating element and an aerosol generating device. Background Technology

[0002] Aerosol generating devices are used to heat and atomize aerosol generating substrates, for example, to bake solid substrates of plant leaves with specific aromas in a non-combustible manner so that the solid substrates of the leaves are baked to form aerosols.

[0003] Currently, most heating components in aerosol generating devices use central heating to heat the aerosol generating matrix.

[0004] However, existing heating components do not heat the aerosol generation matrix evenly, resulting in a poor user experience. Summary of the Invention

[0005] In view of the above problems, this application provides a heating element and an aerosol generating device to solve the problem of uneven heating and poor user experience in the prior art.

[0006] To address the aforementioned technical problems, this application provides a heating component, comprising a substrate and a conductive trace, wherein the substrate has a heating region; the conductive trace is disposed in the heating region; the substrate and the conductive trace are used to at least partially insert into an aerosol generating matrix, such that the conductive trace heats up under energized conditions and heats the aerosol generating matrix; wherein the conductive trace is configured such that, under energized conditions, the conductive trace forms at least two high-temperature zones in the heating region.

[0007] In one embodiment, the conductive trace is configured such that, under energized conditions, the conductive trace forms at least one high-temperature zone at both ends of the heating region along the length direction of the substrate.

[0008] In one embodiment, the conductive trajectory includes two sub-conductive trajectories, which are connected in series or in parallel.

[0009] In one embodiment, the two sub-conductive trajectories are respectively disposed on both sides of the centerline of the substrate, and are disposed symmetrically or asymmetrically with respect to the centerline of the substrate.

[0010] In one embodiment, one of the sub-conductive tracks forms a high-temperature zone at one end of the heating region along the length of the substrate, and another sub-conductive track forms a high-temperature zone at the other end of the heating region along the length of the substrate.

[0011] In one embodiment, the conductive trajectory bends multiple times at positions corresponding to the high-temperature zone.

[0012] In one embodiment, the substrate further includes a non-heating region where the conductive trace is not provided, the heating region and the non-heating region are arranged adjacent to each other along the length direction of the substrate, and the end of the heating region away from the non-heating region forms a tip.

[0013] In one embodiment, the heating component further includes a first electrode and a second electrode spaced apart in the non-heating area for electrical connection to a power supply component; one of the first electrode and the second electrode is electrically connected to a first end of the conductive track, and the other electrode is electrically connected to a second end of the conductive track.

[0014] In one embodiment, the heating component further includes a protective layer coated on the substrate and covering the conductive traces, the first electrode, and the second electrode.

[0015] In some embodiments, the substrate is an insulating substrate; or the substrate includes a conductive substrate and an insulating layer disposed on the surface of the conductive substrate, wherein the conductive trace is disposed on the side of the insulating layer away from the conductive substrate.

[0016] To address the aforementioned technical problems, this application also provides an aerosol generating device, comprising: a housing and a heating component and a power supply component disposed within the housing; wherein the power supply component is electrically connected to the heating component and is used to supply power to the heating component, and the heating component is any of the heating components described above.

[0017] Unlike existing technologies, the heating component and aerosol generating device provided in this application include a substrate and a conductive track. The substrate has a heating region; the conductive track is disposed in the heating region; the substrate and the conductive track are used to at least partially insert into the aerosol generating matrix, so that the conductive track heats up under energized conditions and heats the aerosol generating matrix; wherein, the conductive track is configured such that, under energized conditions, the conductive track forms at least two high-temperature zones in the heating region, so that the heating of the heating component is more uniform and the user experience is improved. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an aerosol generating device provided in an embodiment of this application;

[0019] Figure 2 This is a cross-sectional view of an aerosol generating apparatus provided in an embodiment of this application at a certain angle;

[0020] Figure 3 This is a schematic diagram of the structure of an aerosol-generated article provided in an embodiment of this application;

[0021] Figure 4This is a schematic diagram of the structure of a heating component provided in an embodiment of this application;

[0022] Figure 5 This is an exploded view of a heating component provided in an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of a high-temperature zone formed in the heating area by the bend of a conductive trace provided in an embodiment of this application;

[0024] Figure 7 This is a schematic diagram of the structure of a conductive trajectory provided in an embodiment of this application;

[0025] Figure 8 This is a schematic diagram of the structure of a conductive trajectory provided in another embodiment of this application;

[0026] Figure 9 This is a schematic diagram of the structure of a heating component provided in another embodiment of this application;

[0027] Figure 10 This is a schematic diagram of the structure of a heating component provided in another embodiment of this application;

[0028] Figure 11 This is a schematic diagram of the structure of a heating component provided in another embodiment of this application. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0030] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0031] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] See Figures 1-11 , Figure 1 This is a schematic diagram of the structure of an aerosol generating device provided in an embodiment of this application; Figure 2 This is a cross-sectional view of an aerosol generating apparatus provided in an embodiment of this application at a certain angle; Figure 3 This is a schematic diagram of the structure of an aerosol-generated article provided in an embodiment of this application;

[0033] Figure 4 This is a schematic diagram of the structure of a heating component provided in an embodiment of this application; Figure 5 This is an exploded view of a heating component provided in an embodiment of this application; Figure 6 This is a schematic diagram of a high-temperature zone formed in the heating area by the bend of a conductive trace provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of a conductive trajectory provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of a conductive trajectory provided in another embodiment of this application; Figure 9 This is a schematic diagram of the structure of a heating component provided in another embodiment of this application; Figure 10 This is a schematic diagram of the structure of a heating component provided in another embodiment of this application; Figure 11 This is a schematic diagram of the structure of a heating component provided in another embodiment of this application.

[0034] See Figures 1-2 The aerosol generating device 300 can be used to heat and atomize an aerosol generating matrix. It can be used in various fields, such as medical atomization, beauty atomization, and recreational inhalation. Specifically, the aerosol generating device 300 includes a housing 301 and a heating element 100 and a power supply component 200 disposed within the housing 301. The heating element 100 is used to heat the atomized aerosol generating matrix to form an aerosol. The power supply component 200 includes a battery 201, an airflow sensor (not shown), and a controller (not shown). The power supply component 200 supplies power to the heating element 100 and controls its operation to heat the atomized aerosol generating matrix to form an aerosol. The airflow sensor detects changes in airflow within the aerosol generating device 300, and the controller activates the battery 201 to supply power to the heating element 100 based on the airflow changes detected by the airflow sensor. In another optional embodiment, the airflow sensor may be omitted, and the controller activates the battery 201 to supply power to the heating element 100 based on a control signal input by the user.

[0035] In one embodiment, the heating element 100 is at least partially inserted into the aerosol generating article 10. Specifically, the aerosol generating article 10 includes a receiving tube 11 and an aerosol generating matrix disposed within the receiving tube 11. The aerosol generating matrix can be a solid aerosol generating matrix of plant leaves with a specific aroma. The receiving tube 11 can be a cylindrical segmented structure. An aerosol generating matrix is ​​disposed inside the first end of the receiving tube 11 to form a matrix segment 12, and a filter material (not shown) is disposed inside the second end opposite the first end to form a filter segment 13. A hollow segment 14 is also formed between the matrix segment 12 and the filter segment 13.

[0036] In one embodiment, the heating element 100 is at least partially inserted into the matrix section 12, which contains a solid aerosol generating matrix. The solid aerosol generating matrix can be, but is not limited to, an ordered solid aerosol generating matrix, a disordered solid aerosol generating matrix, or a particulate solid aerosol generating matrix. The hollow section 14 may also contain a support material (not shown in the figure), which is used to collect aerosols. The filter section 13 contains a filter material for filtering impurities in the aerosols. The support material and filter material in the hollow section 14 and the filter section 13 include, but are not limited to, cellulose acetate, polylactic acid, polypropylene, and paper filter media. In a specific embodiment, the first end of the accommodating tube 11 is an open structure or has at least a through hole (not shown in the figure), through which outside air and the heating element 100 can enter the aerosol generating article 10.

[0037] In another embodiment, see Figure 3To prevent the generated aerosol from being too hot and affecting the user experience, a cooling section 15 with cooling materials is also provided between the hollow section 14 and the filter section 13. The cooling materials include, but are not limited to, polylactic acid and other phase change materials.

[0038] See Figures 4-6 In one embodiment, the heating component 100 includes a substrate 20 and conductive traces 30. The substrate 20 has a heating region 21, and the conductive traces 30 are disposed in the heating region 21. The substrate 20 and conductive traces 30 are used to at least partially insert into the aerosol forming matrix, so that the conductive traces 30 heat up under energized conditions and heat the aerosol forming matrix. The substrate 20 can be columnar or sheet-like, and the material of the substrate 20 can be insulating ceramic or an insulating metal. The material of the conductive traces 30 can be one or more of aluminum and its alloys, copper and its alloys, silver and its alloys, gold and its alloys, platinum and its alloys, iron and its alloys, nickel and its alloys, and titanium and its alloys. The heating lines can be formed on the surface of the substrate 20 by physical vapor deposition (e.g., magnetron sputtering, vacuum evaporation, ion plating) or chemical vapor deposition (ion-assisted chemical deposition, laser-assisted chemical deposition, metal-organic compound deposition). The conductive traces 30 can also be formed by printing and sintering conductive paste.

[0039] The inventors of this application have discovered that existing heating elements 100 typically have only one high-temperature zone 31 under energized conditions, and this high-temperature zone 31 is usually located near the tip of the heating element 100. This results in uneven heating of the aerosol-generating matrix by the heating element 100, poor heating effect, and a low content of generated aerosols. To solve the above problems, the conductive trace 30 provided in this application is configured such that, under energized conditions, the conductive trace 30 forms at least two high-temperature zones 31 in the heating region 21, making the high-temperature zones 31 of the heating element 100 widely distributed, resulting in better heating effect, which is beneficial to improving the taste and enhancing the user experience.

[0040] Understandably, the higher the resistance of the material in the conductive trace 30, the more heat is generated and the higher the temperature is when energized. In one embodiment, the conductive trace 30 includes at least two heating sections with different resistances, and a high-resistance heating section is provided at the location corresponding to the high-temperature region 31. In another embodiment, the material of the conductive trace 30 includes at least two materials with different resistances, and a material with higher resistance is provided at the location corresponding to the high-temperature region 31. This ensures that, under energized conditions, the temperature generated in the high-temperature region 31 is higher than the temperature in other regions of the heating region 21.

[0041] For example, the conductive trace 30 forms at least two high-temperature zones 31 and several low-temperature zones (not shown) in the heating region 21. The conductive trace 30 is made of silver and iron, wherein the resistance of iron is greater than that of silver. Iron is placed at the positions corresponding to the high-temperature zones 31, and silver is placed at other positions in the heating region 21.

[0042] For example, the conductive trace 30 forms at least two high-temperature zones 31, several medium-temperature zones (not shown), and several low-temperature zones in the heating region 21. The conductive trace 30 is made of materials including silver, gold, and iron, with silver having the lowest resistance and iron having the highest resistance. Iron is placed at the positions corresponding to the high-temperature zones 31, gold at the positions corresponding to the medium-temperature zones, and silver at the positions corresponding to the low-temperature zones.

[0043] It should be noted that the above-mentioned medium-temperature zone and low-temperature zone are only illustrative descriptions. Specifically, the heating temperature of the aerosol generating matrix in a non-combustible heating manner is usually 240℃-350℃, the temperature of the high-temperature zone 31 is 330℃-350℃, and the temperature of the low-temperature zone is not less than 240℃. That is, the temperature of the medium-temperature zone and the low-temperature zone is 240℃-330℃, and the temperature of the medium-temperature zone is higher than the temperature of the low-temperature zone. The specific temperature can be set according to actual needs.

[0044] In another embodiment, see Figures 5-8 The conductive trace 30 comprises only one material, and the conductive trace 30 is bent multiple times at the position corresponding to the high-temperature zone 31 to form a bent portion 32. The shape of the conductive trace 30 in the bent portion 32 region can be at least one of acute angles, right angles, obtuse angles, and arcs, or a combination thereof, and is not limited herein. Specifically, bending the metal causes a change in resistance at the bend, typically resulting in increased resistance. Consequently, under energized conditions, the bent portion 32 generates more heat and reaches a higher temperature, thus forming a high-temperature zone 31 in the heating region 21.

[0045] In addition, the distribution density of conductive traces 30 in the bent portion 32 is greater than that in the unbent area. As a result, under energized conditions, the bent portion 32 generates more heat and has a higher temperature than the unbent area for the same unit area, thus forming a high-temperature zone 31 in the heating area 21.

[0046] See Figure 6 , Figure 9 and Figure 10To avoid uneven heating temperatures across different areas of the heating component 100, for example, under energized conditions, if one end of the heating component 100 has a high heating temperature and the other end has a low heating temperature, the temperature of the high-temperature zone 31 will become even higher and the temperature of the low-temperature zone will become even lower during user suction, thus posing a risk of overheating. This could even lead to fatigue cracking and increased fatigue resistance of the conductive trace 30 at the high-temperature zone 31, reducing its service life. In one embodiment, the conductive trace 30 is configured such that, under energized conditions, at least one high-temperature zone 31 is formed at both ends of the heating region 21 along the length of the substrate 20. This ensures that both ends of the heating region 21 can fully heat the aerosol generating matrix, thereby making the heating component 100 heat the atomized aerosol generating matrix more uniformly, quickly, and thoroughly, while avoiding the risks of overheating, fatigue cracking of the conductive trace 30, and increased fatigue resistance.

[0047] In some implementations, see Figure 6 , Figure 9 and Figure 10 The conductive trajectory 30 includes two sub-conductive trajectories 33, which are connected in series or in parallel. Each of the two sub-conductive trajectories 33 forms at least one high-temperature zone 31 on the heating region 21.

[0048] In one specific implementation, see Figure 6 Each of the two sub-conductive tracks 33 includes a connecting end (not shown in the figure) and a free end 331. The connecting ends of the two sub-conductive tracks 33 are connected to each other, and the free ends 331 of the two sub-conductive tracks 33 are used to electrically connect to the positive and negative poles of the power supply component 200.

[0049] In another specific embodiment, see Figure 9 Two sub-conductive tracks 33 are connected end-to-end to form a ring-shaped conductive track. Two extensions 332 are provided on the ring-shaped conductive track, and these extensions 332 are used for electrical connection with the positive and negative terminals of the power supply assembly 200. Specifically, one extension 332 is located at the bottom end of the ring-shaped conductive track along the length direction of the substrate 20; the other extension 332 is located at the top end of the ring-shaped conductive track along the length direction of the substrate 20, and extends from the other surface of the substrate 20 where the sub-conductive tracks 33 are not located to the bottom end of the substrate 20. For example, it extends from the back side of the surface where the sub-conductive tracks 33 are located to the bottom end of the substrate 20.

[0050] Understandable, see Figure 10In other parallel embodiments, the two extensions 332 may be disposed at the middle of the sub-conductive traces 33 along the length direction of the base 20, and spaced apart. For example, the two extensions 332 extend from the other surface of the base 20 where no sub-conductive traces 33 are disposed to the bottom end of the base 20, for electrical connection with the positive and negative terminals of the power supply assembly 200. In some embodiments, see [link to relevant documentation]. Figure 6 and Figure 11 Two sub-conductive tracks 33 are respectively set on both sides of the center line M of the substrate 20, and are arranged symmetrically or asymmetrically with respect to the center line M of the substrate 20. The center line M of the substrate 20 refers to the center line along the length of the substrate 20. By adjusting the position of the two sub-conductive tracks 33 on the substrate 20, the heating effect is improved, thereby achieving a better suction experience.

[0051] See Figure 6 Two sub-conductive tracks 33 are respectively disposed on both sides of the center line M of the substrate 20, and are asymmetrically arranged with respect to the center line M of the substrate 20. Each sub-conductive track 33 includes a bend 32 that can form a high-temperature zone 31 under energized conditions. One bend 32 is disposed along the length of the substrate 20 at the top of the substrate 20 and offset from the center line M, while the other bend 32 is disposed along the length of the substrate 20 at the bottom of the substrate 20 and offset from the center line M. Specifically, one sub-conductive track 33 forms a high-temperature zone 31 at one end of the heating area 21 along the length of the substrate 20, and the other sub-conductive track 33 forms a high-temperature zone 31 at the other end of the heating area 21 along the length of the substrate 20, thereby making the heating component 100 heat the aerosol generating matrix more uniformly and achieving a better suction experience.

[0052] See Figure 11 Two sub-conductive tracks 33 are respectively disposed on both sides of the center line M of the substrate 20, and are symmetrically arranged with respect to the center line M of the substrate 20. Each of the two sub-conductive tracks 33 includes a bend 32 that can form a high-temperature zone 31 under energized conditions, and the two bends 32 are symmetrically arranged along the center line M of the substrate 20. Specifically, one sub-conductive track 33 forms a high-temperature zone 31 on one side of the heating area 21, and the other sub-conductive track 33 forms a high-temperature zone 31 on the other side of the heating area 21, thereby enabling the heating component 100 to heat the aerosol generating matrix more fully and achieve a better suction experience.

[0053] In one embodiment, the substrate 20 further includes a non-heat-generating region 22 where the conductive traces 30 are not provided (see [link]). Figure 5The heating region 21 and the non-heating region 22 are arranged adjacent to each other along the length of the substrate 20. Specifically, at least a portion of the non-heating region 22 is used for fixed connection with the housing 301, and the connection medium between the conductive trace 30 and the power supply assembly 200 is disposed on the non-heating region 22. The connection medium can be a metal wire or a conductive coating used to connect the conductive trace 30 and the power supply assembly 200. It is understood that due to the presence of the metal wire or conductive coating, the non-heating region 22 is not completely heat-free under energized conditions and will still generate a small amount of heat, but this is negligible.

[0054] In some specific embodiments, the heating element 100 further includes a mounting base (not shown) fixedly connected to the heating element 100 to mount the heating element 100 within the housing 301. Specifically, the mounting base can be made of organic or inorganic materials with a melting point higher than 160 degrees Celsius. The mounting base can be fixed to the heating element 100 by a clamping structure or an adhesive, and the adhesive can be a high-temperature resistant glue.

[0055] In one embodiment, see Figure 4 The end of the heating area 21 away from the non-heating area 22 is formed into a tip 211 to reduce the resistance when the heating component 100 is inserted into the aerosol-generated article 10.

[0056] In one embodiment, see Figure 5 The heating component 100 also includes a first electrode 34 and a second electrode 35 spaced apart in the non-heating region 22, for electrically connecting the conductive trajectory 30 to the power supply component 200. One of the first electrode 34 and the second electrode 35 is electrically connected to a first end of the conductive trajectory 30, and the other electrode is electrically connected to a second end of the conductive trajectory 30. Specifically, when the conductive trajectory 30 is a non-closed conductive trajectory 30 or consists of two series-connected sub-conductive trajectories 33, one of the first electrode 34 and the second electrode 35 is electrically connected to a free end 331 of the conductive trajectory 30, and the other electrode is electrically connected to the other free end 331 of the conductive trajectory 30. When the conductive trajectory 30 consists of two parallel sub-conductive trajectories 33, one of the first electrode 34 and the second electrode 35 is electrically connected to an extension 332 on the annular conductive trajectory, and the other electrode is electrically connected to another extension 332 on the annular conductive trajectory. In this embodiment, both the first electrode 34 and the second electrode 35 are conductive leads.

[0057] In one embodiment, see Figure 5The heating component 100 also includes a protective layer 36, which is coated on the substrate 20 and covers the conductive trace 30, the first electrode 34, and the second electrode 35 to prevent the aerosol formed when heating the aerosol-generating matrix from damaging the first electrode 34, the second electrode 35, and the conductive trace 30. The protective layer 36 may be a glass enamel layer.

[0058] In one specific embodiment, the protective layer 36 is only coated on the surface of the substrate 20 where the conductive trace 30, the first electrode 34 and the second electrode 35 are provided, to prevent the conductive trace 30, the first electrode 34 and the second electrode 35 from being damaged or even falling off.

[0059] In another specific embodiment, the protective layer 36 may also cover the entire substrate 20, thereby protecting the entire heating component 100 and giving the heating component 100 a smooth surface, further reducing the resistance when the heating component 100 is inserted into the aerosol generating article 10.

[0060] In one embodiment, the substrate 20 is an insulating substrate, for example, the substrate 20 is a sheet-like insulating ceramic, and the conductive traces 30 are disposed on one surface of the insulating substrate. The insulating ceramic substrate 20 can have a thermal conductivity of 4-18 W / (mk), a flexural strength of over 600 MPa, a thermal stability exceeding 450 degrees Celsius, and a fire resistance exceeding 1450 degrees Celsius. The substrate 20 can also be a ZTA material (zirconia-toughened alumina ceramic) or an MTA (mullite-alumina composite).

[0061] In other embodiments, the substrate 20 may further include an uninsulated conductive substrate 23. For example, the substrate 20 may include a sheet-like metal substrate and an insulating layer 24 disposed on the surface of the metal substrate, with the conductive trace 30 disposed on the side of the insulating layer 24 away from the conductive substrate 23. This improves the strength of the heating element 100, prevents bending or breakage, and allows the heat generated when the conductive trace 30 is energized to diffuse to the aerosol generation matrix in contact with the substrate 20, thereby improving the heating uniformity of the aerosol generation matrix. The substrate 20 may also be made of a novel composite zirconia material, which can insulate and transfer the heat generated by the conductive trace 30, thereby improving the energy utilization rate of the heating element 100.

[0062] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A heating element, characterized in that, include: The substrate has a heating area; A conductive trace is provided in the heating area; The substrate and the conductive trace are used to at least partially insert into the aerosol generation matrix, so that the conductive trace heats up under energized conditions and heats the aerosol generation matrix; The conductive track is configured such that, under energized conditions, it forms at least two high-temperature zones in the heating area; the conductive track is bent multiple times at positions corresponding to the high-temperature zones to form bends; the high-temperature zones are formed by the increased resistance at the bends due to the metal bending of the bends. The conductive trajectory includes two sub-conductive trajectories, which are respectively disposed on both sides of the centerline of the substrate, and each sub-conductive trajectory includes at least one high-temperature zone.

2. The heating component according to claim 1, characterized in that, The conductive trace is configured such that, under energized conditions, the conductive trace forms at least one high-temperature zone at both ends of the heating region along the length of the substrate.

3. The heating component according to claim 1, characterized in that, The two sub-conductive trajectories are connected in series or in parallel.

4. The heating component according to claim 3, characterized in that, The two sub-conductive trajectories are arranged symmetrically or asymmetrically with respect to the centerline of the substrate.

5. The heating component according to claim 4, characterized in that, One of the sub-conductive tracks forms a high-temperature zone at one end of the heating region along the length of the substrate, and the other sub-conductive track forms a high-temperature zone at the other end of the heating region along the length of the substrate.

6. The heating component according to claim 1, characterized in that, The substrate also includes a non-heating region where the conductive trace is not provided. The heating region and the non-heating region are arranged adjacent to each other along the length of the substrate, and the end of the heating region away from the non-heating region forms a tip.

7. The heating element according to claim 6, characterized in that, The heating component further includes a first electrode and a second electrode spaced apart in the non-heating area for electrical connection to the power supply component; one of the first electrode and the second electrode is electrically connected to a first end of the conductive track, and the other electrode is electrically connected to a second end of the conductive track.

8. The heating element according to claim 7, characterized in that, The heating component also includes a protective layer coated on the substrate and covering the conductive traces, the first electrode, and the second electrode.

9. The heating component according to claim 1, characterized in that, The substrate is an insulating substrate; or The substrate includes a conductive substrate and an insulating layer disposed on the surface of the conductive substrate, wherein the conductive trace is disposed on the side of the insulating layer away from the conductive substrate.

10. An aerosol generating device, characterized in that, It includes: a housing and a heating component and a power supply component disposed within the housing; wherein the power supply component is electrically connected to the heating component and is used to supply power to the heating component, and the heating component is the heating component as described in any one of claims 1-9.

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