Heating assembly and aerosol generating device
By combining high and low thermal conductivity materials and support components in the heating element, the problem of uneven temperature distribution is solved, resulting in better heat dissipation and user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN FIRST UNION TECH CO LTD
- Filing Date
- 2025-03-24
- Publication Date
- 2026-05-05
AI Technical Summary
The existing heating components have uneven temperature distribution, resulting in a poor user experience. High thermal conductivity materials lead to excessively high overall temperature, while low thermal conductivity materials result in poor thermal conductivity and low smoke output.
The heating substrate design employs a combination of high thermal conductivity and low thermal conductivity materials, which, together with the support components, forms a needle-like structure. The heating layer and the substrate are wound together to form a column, ensuring that the part far from the support dissipates heat quickly, while the part close to the support dissipates heat slowly, resulting in a uniform temperature distribution.
It achieves uniform temperature distribution of the heating element, low shell temperature of the aerosol generator, large amount of smoke, and better user experience.
Smart Images
Figure CN224192962U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of aerosol generation technology, and particularly to heating components and aerosol generation devices. Background Technology
[0002] The heated but non-combustible aerosol generating device includes a heating element that can be inserted into the interior of the aerosol generating article to heat the aerosol generating article. The heating element can have a heating layer on the heating substrate to heat the aerosol generating article.
[0003] When heating elements are made from the same material, using a material with high thermal conductivity can lead to excessively high overall temperature, high power consumption, and excessively high shell temperature. Conversely, using a material with low thermal conductivity can result in poor thermal conductivity and low smoke output. Furthermore, in the past, after the heating element was wound, the isostatic pressing process at the end of the winding made the cross-section of the wound heating element roughly circular. During sintering or repeated heating, the uneven temperature distribution of the heating element made the end of the wound heating element prone to cracking. Utility Model Content
[0004] To address the issues of uneven temperature distribution and poor user experience associated with heating components.
[0005] This application provides a heating component, including:
[0006] Heating substrate;
[0007] A heating layer is disposed on the heating substrate, and the heating layer and the heating substrate are wound together to form a column;
[0008] The heating substrate includes a first substrate portion and a second substrate portion. The first substrate portion includes a material with high thermal conductivity, and the second substrate portion includes a material with low thermal conductivity. The thermal conductivity of the first substrate portion is higher than that of the second substrate portion.
[0009] This application provides a heating component, wherein the first substrate comprises one or more of aluminum oxide, aluminum nitride, silicon nitride, or silicon carbide.
[0010] This application provides a heating component, wherein the second substrate comprises one or more of zirconium oxide or zirconium oxide-doped alumina.
[0011] This application provides a heating component, wherein the length of the first base portion along the axial direction of the winding direction of the heating base is 5mm-12mm.
[0012] This application provides a heating component, wherein the length of the second base portion along the axial direction of the winding direction of the heating base is 5mm-10mm.
[0013] This application provides a heating component, wherein the heating substrate includes a third substrate portion, the third substrate portion being located between a first substrate portion and a second substrate portion, and the first substrate portion, the second substrate portion and the third substrate portion being distributed along the axial direction of the winding direction of the heating substrate.
[0014] This application provides a heating component, wherein the third substrate comprises a mixture of materials from the first substrate and the second substrate.
[0015] This application provides a heating component, wherein the length of the third substrate portion along the axial direction of the winding direction of the heating substrate is 0.5mm-3mm.
[0016] This application provides a heating component, which further includes a support member, wherein the heating substrate is wound around the support member to form a needle shape.
[0017] This application provides a heating component, wherein the support includes an insertion portion and a support portion connected to the insertion portion, the heating substrate is wound around the support portion, and the insertion portion protrudes from the heating substrate.
[0018] This application provides a heating component, wherein the insertion portion is tapered.
[0019] This application provides a heating component, wherein the length of the support portion in the axial direction of the winding direction of the heating substrate is greater than or equal to 3.5 mm.
[0020] This application provides a heating component, wherein the support member is provided with a clearance portion, the clearance portion extends along the axis of the support member, and the edge of the heating substrate is disposed at the clearance portion.
[0021] This application provides a heating component, wherein the support includes an alumina ceramic needle, a zirconia ceramic needle, or a zirconia-toughened alumina ceramic needle.
[0022] This application provides a heating component in which the heating layer and the heating substrate are wound together to form a hollow cylindrical shape, and the aerosol-generated product is suitable for insertion into the hollow structure of the cylindrical structure.
[0023] This application provides a heating component, wherein the heating layer includes a first electrode, a second electrode, and a plurality of heating units. The plurality of heating units are spaced apart along the axial direction of the winding direction of the heating substrate. Each heating unit extends along the winding direction of the heating substrate and is electrically connected to both the first electrode and the second electrode. The first electrode and the second electrode extend along the axial direction of the winding direction of the heating substrate. Each heating unit has a first end and a second end at two ends in the winding direction of the heating substrate. The first end is electrically connected to the first electrode, and the second end is electrically connected to the second electrode.
[0024] This application provides a heating component, wherein when the heating substrate is wound to form a needle-like structure, the heating substrate includes at least one wound layer.
[0025] This application provides a heating component, wherein the heating layer is wound with 0.8-3 turns.
[0026] This application provides an aerosol generating device, characterized in that it includes a battery assembly and the aforementioned heating assembly, wherein the battery assembly is used to provide electrical energy to the heating assembly.
[0027] The heating element of this application comprises a first substrate of high thermal conductivity material and a second substrate of low thermal conductivity material, giving the heating element both high and low thermal conductivity parts. This allows the heating element to dissipate heat quickly in the part away from the support and closer to the aerosol generating product after it is installed in the bracket, while the part closer to the support dissipates heat slowly. On the one hand, the part of the heating element away from the support and closer to the aerosol generating product has good thermal conductivity, uniform temperature distribution, and produces more smoke from the aerosol generating product; on the other hand, the part of the heating element closer to the support loses less heat, resulting in a lower temperature of the shell of the aerosol generating device, thus providing a better user experience. Attached Figure Description
[0028] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0029] Figure 1 This is a schematic diagram of a heating component according to an embodiment of this application;
[0030] Figure 2 This is a schematic diagram of a heating component according to an embodiment of this application;
[0031] Figure 3 This is a schematic diagram of a support member according to one embodiment of this application;
[0032] Figure 4This is a schematic diagram of a heating component according to an embodiment of this application;
[0033] Figure 5 This is a schematic diagram of a heating component according to an embodiment of this application;
[0034] Figure 6 This is a schematic diagram of an aerosol generating apparatus according to an embodiment of this application.
[0035] In the picture:
[0036] 10. Heating components;
[0037] 1. Heating substrate; 11. First substrate portion; 12. Second substrate portion; 13. Third substrate portion;
[0038] 2. Heating layer; 21. First electrode; 22. Second electrode; 23. Heating unit; 231. First end; 232. Second end;
[0039] 3. Support component; 31. Insertion part; 32. Support part;
[0040] 20. Battery components;
[0041] 100. Aerosol generating device. Detailed Implementation
[0042] 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.
[0043] The terms "first," "second," and "third" used in this application are for descriptive purposes only and should not be construed as indicating or implying the quantity or order of the indicated technical features relative to their importance. 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 relationship or movement of the components in a specific orientation (as shown in the accompanying drawings). If the specific orientation changes, the directional indication will 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.
[0044] 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.
[0045] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be intervening elements. When an element is referred to as being "connected to" another element, it can be directly connected to the other element, or there may be one or more intervening elements. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.
[0046] It should be noted that the embodiments of this application provide a heating component and an aerosol generating device including the heating component. The aerosol generating device can be used in conjunction with an aerosol generating product to generate aerosols.
[0047] Aerosol generating articles may include a mouthpiece, a connecting section, and a tobacco segment capable of generating aerosols. The connecting section, located between the mouthpiece and the tobacco segment, guides the aerosol to the mouthpiece. The mouthpiece is for a user to hold in their mouth, allowing the user to inhale the aerosol by sucking on the mouthpiece. The tobacco segment in the aerosol generating article may contain an aerosol generating matrix.
[0048] As used herein, the term "aerosol-generating matrix" refers to a matrix capable of releasing volatile substances to form inhalable aerosols. The aerosol-generating matrix may include tobacco-containing materials containing volatile tobacco flavor compounds that are released from the substrate upon heating. Specifically, the aerosol-generating matrix may be a tobacco-containing aerosol-generating matrix or an aerosol-generating matrix containing solid tobacco. Alternatively, the aerosol-generating matrix may include non-tobacco materials. The aerosol-generating matrix may also include aerosol-forming agents. Examples of suitable aerosol-forming agents are glycerol and propylene glycol.
[0049] If desired, the aerosol generating matrix may contain additional tobacco or non-tobacco volatile flavor compounds released when the aerosol generating matrix is heated. The aerosol generating matrix may also contain microcapsules, such as those containing additional tobacco or non-tobacco volatile flavor compounds, and these microcapsules may melt during heating of the solid aerosol generating matrix.
[0050] The aerosol-generating article can be generally a rod-shaped structure extending longitudinally. The mouthpiece can be positioned adjacent to the proximal end of the aerosol-generating article. The tobacco segment can be positioned adjacent to the distal end of the aerosol-generating article.
[0051] The heating element releases heat to the aerosol-generating product, causing the aerosol-generating matrix to produce volatile substances. These volatile substances combine with air flowing into the aerosol-generating matrix to form an aerosol. The air flowing into the aerosol-generating matrix and the aerosol generated by the matrix can exit from the proximal end of the matrix and be inhaled into the user's mouth.
[0052] This application provides a heating component 10, such as Figure 1 As shown, it includes a heating substrate 1 and a heating layer 2. The heating layer 2 is disposed on the heating substrate 1, and the heating layer 2 and the heating substrate 1 are wound together to form a column. The heating substrate 1 includes a first substrate portion 11 and a second substrate portion 12. The first substrate portion 11 includes a high thermal conductivity material, and the second substrate portion 12 includes a low thermal conductivity material. The thermal conductivity of the first substrate portion 11 is higher than that of the second substrate portion 12.
[0053] The heating element 10 of this application comprises a first base portion 11 of high thermal conductivity material and a second base portion 12 of low thermal conductivity material, so that the heating element 10 has two parts with high thermal conductivity and low thermal conductivity. This allows the part of the heating element 10 away from the support and close to the aerosol generating product to dissipate heat quickly, while the part close to the support dissipates heat slowly. On the one hand, the part of the heating element 10 away from the support and close to the aerosol generating product has good thermal conductivity, uniform temperature field distribution, and produces more smoke from the aerosol generating product. On the other hand, the part of the heating element 10 close to the support loses less heat, and the temperature of the shell of the aerosol generating device is lower, thereby improving the user experience.
[0054] In one embodiment of this application, the first substrate 11 includes one or more of aluminum oxide, aluminum nitride, silicon nitride or silicon carbide, which makes the thermal conductivity of the first substrate 11 high and the heat distribution on the first substrate relatively uniform.
[0055] In one embodiment of this application, the length of the first base portion 11 along the axial direction of the winding direction of the heating substrate is 5mm-12mm. In one embodiment of this application, the length of the first base portion 11 along the axial direction of the winding direction of the heating substrate is 8mm-10mm. In one embodiment of this application, the length of the first base portion 11 along the axial direction of the winding direction of the heating substrate is 5mm, 6mm, 8mm, 10mm, or 12mm.
[0056] In one embodiment of this application, the second substrate 12 includes one or more of zirconium oxide or zirconium oxide doped with aluminum oxide, which makes the thermal conductivity of the second substrate low and the heat dissipation slow, thus preventing the heat of the heating component 10 from being lost from the second substrate 12.
[0057] In one embodiment of this application, the length of the second substrate portion along the axial direction of the winding direction of the heating substrate is 5mm-10mm. In one embodiment of this application, the length of the second substrate portion along the axial direction of the winding direction of the heating substrate is 8mm-10mm. In one embodiment of this application, the length of the second substrate portion along the axial direction of the winding direction of the heating substrate is 5mm, 6mm, 8mm, 9mm, or 10mm.
[0058] In one embodiment of this application, the heating substrate 1 includes a third substrate portion 13, which is located between the first substrate portion 11 and the second substrate portion 12. The first substrate portion 11, the second substrate portion 12 and the third substrate portion 13 are distributed along the axial direction of the winding direction of the heating substrate 1.
[0059] In one embodiment of this application, the third substrate 13 comprises a mixture of materials from the first substrate 11 and the second substrate 12. The third substrate 13 is used to improve the bonding strength between the first substrate 11 and the second substrate 12, preventing mismatch in thermal expansion coefficients caused by material differences, which could ultimately lead to breakage of the heating component 10. In one embodiment of this application, when the first substrate 11 comprises alumina and the second substrate 12 comprises zirconium oxide, the third substrate 13 can be made using a slurry composed of mixed alumina and zirconium oxide particles.
[0060] In one embodiment of this application, the length of the third substrate portion 13 along the axial direction of the winding direction of the heating substrate 1 is 0.5mm-3mm. In one embodiment of this application, the length of the third substrate portion 13 along the axial direction of the winding direction of the heating substrate 1 is 1mm-2mm. In one embodiment of this application, the length of the third substrate portion 13 along the axial direction of the winding direction of the heating substrate 1 is 0.5mm, 0.8mm, 1mm, 1.5mm, 2mm, 2.5mm, or 3mm.
[0061] In one embodiment of this application, the heating component 10 further includes a support member 3. The heating substrate 1 is wound around the support member 3 to form a needle shape. The support member 3 provides support for the heating substrate 1, increasing the structural strength of the heating component 10. The needle-shaped heating substrate 1 can be inserted into the aerosol-generated article to achieve central heating.
[0062] In other embodiments of this application, such as Figure 2-3As shown, the heating component 10 may also be without the support member 3, with the heating substrate 1 serving as the support for the heating layer 2.
[0063] In one embodiment of this application, the support member 3 may include an insertion part 31 and a support part 32 connected to the insertion part 31, the heating base 1 is wound around the support part 32, and the insertion part 31 protrudes from the heating base 1.
[0064] In one embodiment of this application, the heating substrate 1 is wound to form a hollow tube, the support portion 32 is inserted into the hollow tube structure, and the insertion portion 31 is used to guide the heating component 10 so that the heating component 10 is inserted into the interior of the aerosol generating article.
[0065] In one embodiment of this application, the insertion portion 31 is tapered, facilitating the insertion of the heating component 10 into the interior of the aerosol-generating article. In another embodiment of this application, the support member 3 is umbrella-shaped.
[0066] In one embodiment of this application, the length of the heating substrate 1 in the axial direction of its winding direction is greater than or equal to the length of the support portion 32. The heating substrate 1 has sufficient support strength for the heating layer 2. The support 3 is mainly provided to the heating assembly 10 for insertion into the solvent-generated product via an insertion portion 31. The insertion portion 31 is connected to the heating substrate 1 through the support portion 32.
[0067] In one embodiment of this application, such as Figure 5 As shown, the support member 3 may also be provided with a clearance portion 33, which extends along the axis of the support member 3. The starting edge of the winding of the heating substrate 1 can be located at the clearance portion 33. In one embodiment of this application, the starting point of the winding of the heating substrate 1 is located at the clearance portion 33, and the clearance portion 33 serves to limit and accommodate the starting point of the heating substrate 1. In addition, the provision of the clearance portion 33 also avoids the height difference between the starting point of the winding of the heating substrate 1 and the inner winding layer of the heating substrate 1, thus preventing cracks from appearing in the heating assembly 10 during sintering or repeated heating.
[0068] In one embodiment of the application, the heating substrate 1 is ceramic, which is formed by sintering a cast sheet. The cast sheet includes ceramic powder, solvent, dispersant, plasticizer and functional additives, etc.
[0069] It should be noted that, as Figure 4-5 As shown, there is a certain height difference between the termination point of the winding of the heating substrate 1 and the inner winding layer of the heating substrate 1, resulting in an uneven outer surface of the wound heating substrate. Based on this, in one embodiment of this application, an isostatic pressing process can be used to form a smooth surface on the outer surface of the wound heating substrate 1.
[0070] In one embodiment of this application, if the heating substrate 1 is wound to form a hollow tube, the heating substrate 1 is wound around the winding fixture, and then an isostatic pressing process is performed to make the outer surface of the wound heating substrate 1 flat. The winding fixture is then removed, and then the support member 3 is installed.
[0071] In one embodiment of this application, the support 3 includes an alumina ceramic needle, a zirconia ceramic needle, or a zirconia-toughened alumina ceramic needle.
[0072] In one embodiment of this application, the length of the support portion 3 in the axial direction of the winding direction of the heating substrate 1 is greater than or equal to 3.5 mm. In another embodiment of this application, the length of the support portion 3 in the axial direction of the winding direction of the heating substrate 1 is 3.5 mm, 3.8 mm, 4.0 mm, 4.5 mm, or 5.0 mm.
[0073] In one embodiment of this application, the heating layer 2 and the heating substrate 1 are wound together to form a hollow cylindrical shape, and the aerosol generating article is suitable for insertion into the hollow structure of the cylindrical structure, so that the heating component 10 can heat the aerosol generating article in the circumferential direction.
[0074] In one embodiment of this application, the heating layer 2 is disposed on the surface of the heating substrate 1. In other embodiments of this application, the heating layer 2 is disposed in an internal interlayer of the heating substrate 1.
[0075] In one embodiment of this application, the heating layer 2 is disposed on the radially inward surface or the radially outward surface of the heating substrate 1.
[0076] This application provides a heating component. The heating layer 2 includes a first electrode 21, a second electrode 22, and a plurality of heating units 23. The plurality of heating units 23 are spaced apart along the axial direction of the winding direction of the heating substrate 1. Each heating unit 23 extends along the winding direction of the heating substrate 1. Each heating unit 23 is electrically connected to the first electrode 21 and the second electrode 22. The first electrode 21 and the second electrode 22 extend along the axial direction of the winding direction of the heating substrate 1. Each heating unit 23 has a first end 231 and a second end 232 at both ends in the winding direction of the heating substrate 1. The first end 231 is electrically connected to the first electrode 21, and the second end 232 is electrically connected to the second electrode 22.
[0077] In one embodiment of this application, the dimension of the heating layer 2 along the axial direction of the winding direction is 6mm-15mm. In one embodiment of this application, the dimension of the heating layer 2 along the axial direction of the winding direction is 8mm-11mm. In one embodiment of this application, the dimension of the heating layer 2 along the axial direction of the winding direction is 6mm, 7mm, 7.5mm, 8mm, 8.8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, or 15mm.
[0078] In one embodiment of this application, the dimension of the heating layer 2 along the axial direction of the winding direction is less than or equal to the length of the tobacco segment of the aerosol-generating article, and the heating area corresponding to the heating layer 2 is less than or equal to the length of the tobacco segment. In another embodiment of this application, the dimension of the heating layer 2 along the axial direction of the winding direction is less than or equal to the length of the portion of the aerosol-generating article excluding the filter tip, and the heating area corresponding to the heating layer 2 is less than or equal to the portion of the aerosol-generating article excluding the filter tip.
[0079] In one embodiment of this application, the thickness of the heating layer 2 is 5μm-30μm. In another embodiment of this application, the thickness of the heating layer 2 is 8μm-18μm. In yet another embodiment of this application, the thickness of the heating layer 2 is 5μm, 6μm, 7μm, 8μm, 10μm, 12μm, 15μm, 18μm, 20μm, 25μm, 27μm, 28μm, or 30μm.
[0080] In one embodiment of this application, the thickness of the heating unit 23 is 5μm-30μm. In another embodiment, the thickness of the heating unit 23 is 8μm-20μm. In another embodiment, the thickness of the heating unit 23 is 10μm-18μm. In another embodiment, the thickness of the heating unit 23 is 12μm-18μm. In yet another embodiment, the thickness of the heating unit 23 is 5μm, 6μm, 7μm, 8μm, 10μm, 12μm, 15μm, 18μm, 20μm, 25μm, 27μm, 28μm, or 30μm.
[0081] In one embodiment of this application, the thickness of the first electrode 21 or the second electrode 22 is 5 μm-30 μm. In one embodiment of this application, the thickness of the first electrode 21 or the second electrode 22 is 8 μm-20 μm. In one embodiment of this application, the thickness of the first electrode 21 or the second electrode 22 is 10 μm-18 μm. In one embodiment of this application, the thickness of the first electrode 21 or the second electrode 22 is 12 μm-18 μm. In one embodiment of this application, the thickness of the first electrode 21 or the second electrode 22 is 5 μm, 6 μm, 7 μm, 8 μm, 10 μm, 12 μm, 15 μm, 18 μm, 20 μm, 25 μm, 27 μm, 28 μm, or 30 μm.
[0082] In one embodiment of this application, the thickness of the heating substrate 1 is 0.08mm-0.35mm; in another embodiment, the thickness of the heating substrate 1 is 0.10mm-0.20mm. In yet another embodiment, the thickness of the heating substrate 1 is 0.08mm, 0.10mm, 0.12mm, 0.15mm, 0.18mm, 0.20mm, 0.25mm, 0.28mm, 0.30mm, 0.33mm, or 0.35mm.
[0083] In one embodiment of this application, the diameter of the heating element 10 is greater than or equal to 2 mm. In another embodiment, the diameter of the heating element 10 is related to the diameter of the aerosol-generating article; when the heating element 10 is used for central heating, its diameter is smaller than the diameter of the aerosol-generating article; when the heating element 10 is used for circumferential heating, its diameter is larger than the diameter of the aerosol-generating article. In one embodiment of this application, the diameter of the heating element 10 is 2 mm, 2.13 mm, 2.15 mm, 2.20 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 6 mm, 7 mm, 8 mm, or 8.5 mm.
[0084] In one embodiment of this application, when the heating substrate 1 is wound to form a columnar structure, the heating substrate 1 includes at least one wound layer, such that the heating substrate 1 can form a column after being wound. The heating substrate 1 has a good supporting function, which facilitates the placement of the heating layer 2 on the surface of the heating substrate 1. During winding, the heating layer 2 can be wound to the radially inner surface of the wound layer, or the heating layer can be wound to the radially outer surface of the wound layer.
[0085] It should be noted that the term "winding layer" here can be understood as a columnar structure formed when the heating substrate 1 is wound; when the heating substrate 1 is wound multiple times, a corresponding number of winding layers can be formed. In one embodiment of this application, the number of winding layers of the heating substrate 1 can be 1, 1.5, 1.8, 2, 2.2, 3, etc.
[0086] In one embodiment of this application, the heating layer 2 is wound with 0.8-3 turns. In another embodiment, the heating layer 2 is wound with 0.8 turns. In this case, after the heating substrate 1 is wound, the two ends of the heating unit 23 are still spaced a certain distance apart. The two ends of the heating unit 23 are respectively provided with a first electrode 21 and a second electrode 22, facilitating the entry of external current into the heating unit 23. Furthermore, during the heating process, heat radiates between the two ends of the heating unit 23, ensuring that the heat in the heating component 10 is still evenly distributed in the circumferential direction. In another embodiment, the heating layer 2 is wound with 1, 2, or 3 turns, ensuring that the heating layer 2 is evenly distributed in both the axial and circumferential directions, resulting in more uniform heating of the heating component 10.
[0087] One embodiment of this application also provides an aerosol generating apparatus 100, such as... Figure 6 As shown, it includes a battery assembly 20 and the aforementioned heating assembly 10, with the battery assembly 20 providing electrical energy to the heating assembly 10.
[0088] It should be noted that the preferred embodiments of this application are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A heating element, characterized in that, include: Heating substrate; A heating layer is disposed on the heating substrate, and the heating layer and the heating substrate are wound together to form a column; The heating substrate includes a first substrate portion and a second substrate portion. The first substrate portion includes a material with high thermal conductivity, and the second substrate portion includes a material with low thermal conductivity. The thermal conductivity of the first substrate portion is higher than that of the second substrate portion.
2. The heating component according to claim 1, characterized in that, The first substrate portion includes one or more of aluminum oxide, aluminum nitride, silicon nitride, or silicon carbide.
3. The heating component according to claim 1, characterized in that... The second substrate includes one or more of zirconium oxide or zirconium oxide-doped alumina.
4. The heating component according to claim 1, characterized in that, The length of the first base portion along the axial direction of the winding direction of the heating base portion is 5mm-12mm.
5. The heating component according to claim 1, characterized in that, The length of the second substrate portion along the axial direction of the winding direction of the heating substrate is 5mm-10mm.
6. The heating component according to claim 1, characterized in that, The heating substrate includes a third substrate portion located between the first substrate portion and the second substrate portion. The first substrate portion, the second substrate portion, and the third substrate portion are distributed along the axial direction of the winding direction of the heating substrate.
7. The heating element according to claim 6, characterized in that, The third substrate portion comprises a mixture of materials from the first substrate portion and the second substrate portion.
8. The heating element according to claim 6, characterized in that, The length of the third substrate portion along the axial direction of the winding direction of the heating substrate is 0.5mm-3mm.
9. The heating component according to claim 1, characterized in that, It also includes a support member, around which the heating substrate is wound to form a needle shape.
10. The heating component according to claim 9, characterized in that, The support member includes an insertion part and a support part connected to the insertion part, the heating substrate is wound around the support part, and the insertion part protrudes from the heating substrate.
11. The heating component according to claim 10, characterized in that, The insertion part is conical.
12. The heating component according to claim 10, characterized in that, The length of the support portion in the axial direction of the winding direction of the heating substrate is greater than or equal to 3.5 mm.
13. The heating component according to claim 9, characterized in that, The support member is provided with a clearance portion, which extends along the axis of the support member, and the edge of the heating substrate is located at the clearance portion.
14. The heating component according to claim 9, characterized in that, The support includes alumina ceramic needles, zirconia ceramic needles, or zirconia-toughened alumina ceramic needles.
15. The heating component according to claim 1, characterized in that, The heating layer and the heating substrate are wound together to form a hollow cylindrical shape, and the aerosol-generated product is suitable for insertion into the hollow structure of the cylindrical structure.
16. The heating component according to claim 1, characterized in that, The heating layer includes a first electrode, a second electrode, and a plurality of heating units. The plurality of heating units are spaced apart along the axial direction of the winding direction of the heating substrate. Each heating unit extends along the winding direction of the heating substrate and is electrically connected to both the first electrode and the second electrode. The first electrode and the second electrode extend along the axial direction of the winding direction of the heating substrate. Each heating unit has a first end and a second end at two ends in the winding direction of the heating substrate. The first end is electrically connected to the first electrode, and the second end is electrically connected to the second electrode.
17. The heating component according to claim 1, characterized in that, When the heating substrate is wound to form a needle-like structure, the heating substrate includes at least one wound layer.
18. The heating element according to claim 17, characterized in that, The heating layer is wound 0.8-3 times.
19. An aerosol generating device, characterized in that, It includes a battery assembly and a heating component as described in any one of claims 1-18, wherein the battery assembly is used to provide electrical energy to the heating component.