Heating assembly and aerosol-generating device

Abstract

This application provides a heating element and an aerosol generating device. The heating element includes: a first cast sheet with a first heating layer printed on its surface; and a second cast sheet with a second heating layer printed on its surface. The first and second cast sheets are stacked and wound to form a column, which is adapted to be inserted into an aerosol generating article to heat the aerosol generating article. The first and second heating layers are staggered along the axial direction of the column. Both the first and second heating layers include multiple spaced heating tracks. The staggered arrangement of the first and second heating layers facilitates segmented heating of the aerosol generating article. Furthermore, the multiple spaced heating tracks in the first and second heating layers allow for adjustment of the resistance distribution of the first and second heating layers according to design requirements, thus facilitating adjustment of the temperature field distribution of the heating element.

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] The heating layer in existing heating components can heat aerosol-generated products uniformly, but it is not convenient for the heating components to heat aerosol-generated products in segments. Utility Model Content

[0004] To address the problem that existing heating components are not convenient for segmented heating of aerosol-generated products.

[0005] This application provides a heating component, including:

[0006] A first cast sheet, wherein a first heating layer is printed on the surface of the first cast sheet;

[0007] A second cast sheet has a second heating layer printed on its surface. The first and second cast sheets are stacked together and wound together to form a column. The column is adapted to be inserted into the aerosol generating article to heat the aerosol generating article.

[0008] Along the axis of the column, the first heating layer and the second heating layer are staggered; both the first heating layer and the second heating layer include multiple spaced heating trajectories.

[0009] This application provides a heating component, wherein in the winding direction of the first cast sheet and the second cast sheet, the first cast sheet is located radially inside the winding direction, and the first heating layer is disposed on the radially inward surface of the first cast sheet;

[0010] And / or, the second heating layer is disposed on the radially inward surface of the second cast sheet layer.

[0011] This application provides a heating assembly in which the first heating layer and the second heating layer are completely staggered along the axis of the column.

[0012] This application provides a heating component in which the length of the first cast sheet is less than the length of the second cast sheet in the winding direction of the first cast sheet and the second cast sheet.

[0013] This application provides a heating assembly in which the edges of the first and second cast sheets are aligned at the starting ends of the winding of the first and second cast sheets; or,

[0014] At the starting end of the winding of the first and second cast sheets, the edges of the first and second cast sheets are offset by a distance of 0.5mm-2mm.

[0015] This application provides a heating component in which the edges of the first and second cast sheets are offset at the termination ends of the winding of the first and second cast sheets.

[0016] This application provides a heating component, wherein the number of turns of the first heating layer or the second heating layer is 0.8-1 turns.

[0017] This application provides a heating component, which further includes a support member, wherein the first cast sheet and the second cast sheet are wound around the support member to form a column.

[0018] This application provides a heating component, wherein the support includes an insertion portion and a support portion connected to the insertion portion, wherein the first cast sheet and the second cast sheet are wound around the support portion when wound, the insertion portion is located outside the column, and the insertion portion is used to guide the aerosol generation article so that the aerosol generation article is inserted into the column.

[0019] 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 starting ends of the first cast sheet and the second cast sheet being wound abut against the clearance portion.

[0020] This application provides a heating component, wherein the heating trajectory is linear and extends along the winding direction;

[0021] Alternatively, the heating trajectory may include multiple straight line segments, with any two adjacent straight line segments being perpendicular to each other.

[0022] This application provides a heating component, wherein within the first heating layer, at least one heating trajectory has a width different from the widths of the other heating trajectories;

[0023] Alternatively, within the second heating layer, at least one of the heating trajectories has a width different from the widths of the other heating trajectories.

[0024] This application provides a heating component, wherein both the first heating layer and the second heating layer include a first electrode and a second electrode.

[0025] The first electrode and the second electrode extend along the axial direction of the winding direction, and the two ends of the heating trajectory are electrically connected to the corresponding first electrode and the corresponding second electrode.

[0026] This application provides a heating component, wherein a first pad is provided on the first electrode, and a first receiving hole is provided on the first cast sheet corresponding to the first pad; and / or a second pad is provided on the second electrode, and a second receiving hole is provided on the second cast sheet corresponding to the second pad.

[0027] This application provides a heating component, wherein the first receiving hole is a circular through hole with a diameter of 0.1mm-0.6mm; and / or the second receiving hole is a circular through hole with a diameter of 0.1mm-0.6mm.

[0028] This application provides a heating component, wherein a first insulating layer is disposed on the side of the first heating layer away from the first cast sheet; and / or a second insulating layer is disposed on the side of the second heating layer away from the second cast sheet.

[0029] This application provides an aerosol generating device, including a battery assembly and the aforementioned heating assembly, wherein the battery assembly is used to provide electrical energy to the heating assembly.

[0030] The heating element of this application includes a first heating layer and a second heating layer arranged in a staggered manner, which facilitates the heating element to heat the aerosol-generated product in segments; and the first heating layer and the second heating layer include multiple spaced heating trajectories, which facilitates the adjustment of the resistance distribution of the first heating layer and the second heating layer according to design requirements, and facilitates the adjustment of the temperature field distribution of the heating element. Attached Figure Description

[0031] 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.

[0032] Figure 1 This is a schematic diagram of a heating component according to an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of a heating component according to an embodiment of this application;

[0034] Figure 3 This is a schematic diagram of a heating component according to an embodiment of this application;

[0035] Figure 4 This is a schematic diagram of a heating component according to an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of a heating component according to an embodiment of this application;

[0037] Figure 6 This is a schematic diagram of a heating component according to an embodiment of this application;

[0038] Figure 7 This is a schematic diagram of a support member according to one embodiment of this application;

[0039] Figure 8 This is a schematic diagram of a heating component according to an embodiment of this application;

[0040] Figure 9 This is a schematic diagram of a heating component according to an embodiment of this application;

[0041] Figure 10 This is a schematic diagram of an aerosol generating apparatus according to an embodiment of this application.

[0042] In the picture:

[0043] 10. Heating components;

[0044] 1. First cast film; 11. First receiving hole;

[0045] 2. Second cast film; 21. Second receiving hole;

[0046] 3. First heating layer;

[0047] 4. Second heating layer;

[0048] 5. Fever trajectory;

[0049] 6. Support component; 61. Insertion part; 62. Support part; 63. Clearance part;

[0050] 7. First electrode; 71. First pad;

[0051] 8. Second electrode; 82. Second pad; Detailed Implementation

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] This application provides a heating component 10, such as Figures 1-4 As shown, the device includes a first cast sheet 1 and a second cast sheet 2. A first heating layer 3 is printed on the surface of the first cast sheet 1. A second heating layer 4 is printed on the surface of the second cast sheet 2. The first cast sheet 1 and the second cast sheet 2 are stacked and wound to form a column, which is suitable for insertion into the aerosol-generating product to heat the aerosol-generating product. The first heating layer 3 and the second heating layer 4 are staggered along the axial direction of the column. Both the first heating layer 1 and the second heating layer 2 include multiple spaced heating tracks 5.

[0063] The heating component 10 of this application includes a first heating layer 1 and a second heating layer 2 arranged in a staggered manner, which facilitates the heating component 10 to heat the aerosol-generated product in segments; and the first heating layer 1 and the second heating layer 2 include multiple spaced heating tracks 5, which facilitates the adjustment of the resistance distribution of the first heating layer 1 and the second heating layer 2 according to design requirements, and facilitates the adjustment of the temperature field distribution of the heating component 10.

[0064] In one embodiment of this application, the first heating layer 3 and the second heating layer 4 partially overlap, but do not completely overlap, along the axial direction of the column. In other words, a portion of the first heating layer 3 and a portion of the second heating layer 4 are projected onto each other in the radial direction of the column. By controlling the heating of the first heating layer 3 and the second heating layer 4, different areas of the aerosol-generating article can be heated.

[0065] In one embodiment of this application, in the winding direction of the first cast sheet 1 and the second cast sheet 2, the first cast sheet 1 is located radially inward in the winding direction, and the first heating layer 3 is disposed on the radially inward surface of the first cast sheet 1, so that the heat generated by the first heating layer 3 does not need to pass through the first cast sheet 1 to be conducted to the aerosol-generated article. In one embodiment of this application, the second heating layer 4 is disposed on the radially inward surface of the second cast sheet 2.

[0066] In one embodiment of this application, the first heating layer 3 and the second heating layer 4 are completely staggered along the axial direction of the column; it is understood that the first heating layer 3 and the second heating layer do not overlap at all along the axial direction of the column. By controlling the heating of the first heating layer 3 and the second heating layer 4, different areas on the aerosol-generating product can be heated.

[0067] In other embodiments of this application, the first heating layer 3 is disposed on the radially outward surface of the first cast sheet 1. In other embodiments of this application, the second heating layer 4 is disposed on the radially outward surface of the second cast sheet 2.

[0068] In one embodiment of this application, in the winding direction of the first cast sheet 1 and the second cast sheet 2, the length of the first cast sheet 1 is less than the length of the second cast sheet 2. For example, after the first cast sheet 1 and the first cast sheet 2 are stacked, the first cast sheet 1 is located radially inside in the winding direction; that is, during the winding process, the first cast sheet 2 wraps around the first cast sheet 1. When the first cast sheet 1 and the second cast sheet 2 are wound to form a cylinder, the number of turns of the second cast sheet 2 is greater than the number of turns of the first cast sheet 1.

[0069] In one embodiment of this application, at the starting end of the winding of the first cast sheet 1 and the second cast sheet 2, the edges of the first cast sheet 1 and the second cast sheet 2 are aligned, so that the first cast sheet 1 and the second cast sheet 2 can be wound simultaneously, and the first cast sheet 1 and the second cast sheet 2 can be wound into a column shape by winding them sequentially.

[0070] In one embodiment of this application, at the starting end of the winding of the first cast sheet 1 and the second cast sheet 2, the edges of the first cast sheet 1 and the second cast sheet 2 are staggered; thus, on the wound cylindrical structure, the seams of the first cast sheet 1 and the second cast sheet 2 can be staggered. This staggers the stress-weak areas of the first cast sheet 1 and the second cast sheet 2, making the structure of the heating component 10 more stable. In one embodiment of this application, the seam stagger of the first cast sheet 1 and the second cast sheet 2 is 0.5mm-2mm. In another embodiment of this application, the seam stagger of the first cast sheet 1 and the second cast sheet 2 is 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 1.8mm, or 2mm.

[0071] In one embodiment of this application, at the termination end of the winding of the first cast sheet 1 and the second cast sheet 2, the edges of the first cast sheet 1 and the second cast sheet 2 are staggered. In this way, after the first cast sheet 1 and the second cast sheet 2 are wound into a cylinder, the stress-weak areas of the first cast sheet 1 and the second cast sheet 2 can be staggered, making the structure of the heating component 10 more stable.

[0072] In one embodiment of this application, the number of turns of the first heating layer 3 or the second heating layer 4 is 0.8-1 turns. In another embodiment of this application, the number of turns of the first heating layer 3 or the second heating layer 4 is 0.8. In this case, after the first casting sheet 1 and the second casting sheet 2 are wound, the starting and ending ends of the first heating layer 3 or the second heating layer 4 are still spaced a certain distance apart, which facilitates the entry of external current into the first heating layer 3 or the second heating layer 4. Furthermore, during the heating process, the heat from the first heating layer 3 or the second heating layer 4 will radiate to the starting and ending ends of the first heating layer 3 or the second heating layer 4, so that the heat of the heating component 10 can still be evenly distributed along the axis. In another embodiment of this application, the number of turns of the first heating layer 3 or the second heating layer 4 is 0.9 turns or 1 turn, so that the heating layer 2 is evenly distributed along the axis and circumference, making the heating of the heating component 10 more uniform.

[0073] In one embodiment of this application, the heating component 10 further includes a support member 6, such as... Figures 6-9 As shown, when the first cast sheet 1 and the second cast sheet 2 are wound, they are wound around the support member 6 to form a column. The support member 3 supports the first cast sheet 1 and the second cast sheet 2, increasing the structural strength of the heating component 10.

[0074] In one embodiment of this application, the support member 6 includes an insertion portion 61 and a support portion 62 connected to the insertion portion 61. When the first cast sheet 1 and the second cast sheet 2 are wound, they are wound around the support portion 62. The insertion portion 61 is located outside the column and is used to guide the aerosol generation article so that the aerosol generation article is inserted into the column.

[0075] In one embodiment of this application, the insertion portion 61 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.

[0076] In one embodiment of this application, the support member 6 is provided with a relief portion 63, which extends along the axis of the support member 6. The starting ends of the first cast sheet 1 and the second cast sheet 2 are stopped by the relief portion 63. The relief portion 63 plays a role in limiting and receiving the starting ends of the first cast sheet 1 and the second cast sheet 2.

[0077] In one embodiment of this application, the heating trajectory 5 is linear and extends along the winding direction.

[0078] In one embodiment of this application, when the heating trajectory 5 includes multiple straight line segments, at least one straight line segment has a width that is different from the width of the other straight line segments, so that the resistance distribution of the heating trajectory 5 can be adjusted according to design requirements.

[0079] In one embodiment of this application, each heating trajectory 5 includes multiple straight line segments, and any two adjacent straight line segments are connected perpendicularly to each other. In one embodiment of this application, the heating trajectory 5 can be formed by connecting straight line segments and present an N-shape, n-shape, M-shape, U-shape, S-shape, or L-shape.

[0080] In one embodiment of this application, within the first heating layer 3, at least one heating trajectory 5 has a width different from the widths of the other heating trajectories 5, thereby allowing the resistance of the heating trajectory 5 to be adjusted according to design requirements, thus adjusting the temperature field distribution of the heating component 10. In another embodiment of this application, within the second heating layer 4, at least one heating trajectory 5 has a width different from the widths of the other heating trajectories, thereby allowing the resistance of the heating trajectory 5 to be adjusted according to design requirements, thus adjusting the temperature field distribution of the heating component 10.

[0081] In one embodiment of this application, when the heating trajectory 5 includes multiple straight segments, at least one straight segment has a width different from the widths of the other straight segments, so that the resistance of the heating trajectory 5 can be adjusted according to design requirements, thereby adjusting the temperature field distribution of the heating component 10. When the heating trajectory 5 is bent, the resistance at the bend is greater and the heat distribution at the bend is more concentrated.

[0082] In one embodiment of this application, for example Figure 1 The heating trajectory is U-shaped, including a first side, a second side, and a third side. The second side connects the first and third sides, which are positioned opposite each other. In one embodiment of this application, the width of the second side can be set smaller than the widths of the first and third sides, thereby increasing the resistance of the second side compared to the first or third side. This results in greater heat generation on the second side, and the high-temperature zone of the heating element 10 is concentrated at the location corresponding to the second side. In another embodiment of this application, the ratio of the lengths of the first, second, and third sides can be adjusted to regulate their resistance, thereby adjusting the temperature field distribution of the heating element 10.

[0083] In one embodiment of this application, when there are multiple heating tracks, all of them are U-shaped, and the multiple heating tracks are stacked and arranged in an outer layer, with the length of the outermost heating track being greater than the length of its innermost heating track, such as... Figure 4 As shown.

[0084] In the design process of multiple stacked heating tracks with outer jackets, the width of the outermost heating track can be set to be greater than the width of its innermost heating track, so that the resistance of the outermost heating track is approximately equal to the resistance of its innermost heating track, and the heat generation of the U-shaped stacked heating tracks and the U-shaped inner heating tracks is approximately the same.

[0085] In one embodiment of this application, the first heating layer 3 and the second heating layer 4 each include a first electrode 7 and a second electrode 8. The first electrode 7 and the second electrode 8 extend along the axial direction of the winding direction, and the two ends of the heating trajectory 5 are electrically connected to the corresponding first electrode 7 and the corresponding second electrode 8.

[0086] In one embodiment of this application, a first pad 71 is provided on the first electrode 7, and a first receiving hole 11 is provided on the first pad 71 corresponding to the first tape 1. In one embodiment of this application, a second pad 81 is provided on the second electrode 8, and a second receiving hole 21 is provided on the second pad 81 corresponding to the second tape 2.

[0087] In one embodiment of this application, the first receiving hole 11 is a circular through hole with a diameter of 0.1mm-0.6mm. In one embodiment of this application, the diameter of the first receiving hole 11 is 0.15mm-0.3mm. In another embodiment of this application, the first receiving hole 11 is a circular through hole with a diameter of 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, or 0.6mm.

[0088] In one embodiment of this application, the second receiving hole 21 is a circular through hole with a diameter of 0.1mm-0.6mm. In one embodiment of this application, the diameter of the second receiving hole 21 is 0.15mm-0.3mm. In another embodiment of this application, the second receiving hole 21 is a circular through hole with a diameter of 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, or 0.6mm.

[0089] In one embodiment of this application, electrode paste is disposed in the first receiving hole 11 or the second receiving hole 21, resulting in lower resistance at the first pad 71 or the second pad 81, and lower contact resistance when the first pad 71 or the second pad 81 is soldered to the electrode lead. In another embodiment of this application, the electrode paste in the first receiving hole 11 or the second receiving hole 21 is formed during the printing of electrode units on the first casting film 1 or the second casting film 2, when the electrode paste seeps into the first receiving hole 11 or the second receiving hole 21.

[0090] In one embodiment of this application, a first groove is provided on the side of the first cast sheet 1 away from the first heating layer 3, and a first receiving hole 11 is exposed in the first groove. The first groove facilitates the soldering of electrode leads to the first pad 71. In one embodiment of this application, a second groove is provided on the side of the second cast sheet 2 away from the second heating layer 4, and a second receiving hole 12 is exposed in the second groove. The second groove facilitates the soldering of electrode leads to the second pad 81.

[0091] In one embodiment of this application, the second casting sheet 2 is provided with a through hole corresponding to the first sink, and the first receiving hole 11 is exposed to the through hole.

[0092] In one embodiment of this application, a first insulating layer is disposed on the side of the first heating layer 3 away from the first cast sheet 1. In one embodiment of this application, a second insulating layer is disposed on the side of the second heating layer away from the second cast sheet.

[0093] This application provides an aerosol generating device, such as... Figure 10 As shown, it includes a battery assembly 20 and the aforementioned heating assembly 10, wherein the battery assembly 20 is used to provide electrical energy to the heating assembly 10.

[0094] 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: A first cast sheet, wherein a first heating layer is printed on the surface of the first cast sheet; A second cast sheet has a second heating layer printed on its surface. The first and second cast sheets are stacked together and wound together to form a column. The column is adapted to be inserted into the aerosol generating article to heat the aerosol generating article. Along the axis of the column, the first heating layer and the second heating layer are staggered; both the first heating layer and the second heating layer include multiple spaced heating trajectories.

2. The heating component according to claim 1, characterized in that, In the winding direction of the first cast sheet and the second cast sheet, the first cast sheet is located radially inside the winding direction, and the first heating layer is disposed on the radially inward surface of the first cast sheet; And / or, the second heating layer is disposed on the radially inward surface of the second cast sheet layer.

3. The heating component according to claim 1, characterized in that, The first heating layer and the second heating layer are completely staggered along the axis of the column.

4. The heating component according to claim 1, characterized in that, In the winding direction of the first and second cast sheets, the length of the first cast sheet is less than the length of the second cast sheet.

5. The heating component according to claim 1, characterized in that, At the starting end of the winding of the first and second cast sheets, the edges of the first and second cast sheets are aligned; or, At the starting end of the winding of the first and second cast sheets, the edges of the first and second cast sheets are offset by a distance of 0.5mm-2mm.

6. The heating component according to claim 1, characterized in that, At the termination of the winding of the first and second cast sheets, the edges of the first and second cast sheets are offset.

7. The heating component according to claim 1, characterized in that, The number of turns of the first heating layer or the second heating layer is 0.8-1 turns.

8. The heating component according to claim 1, characterized in that, It also includes a support member, around which the first and second cast sheets are wound to form a column.

9. The heating element according to claim 8, characterized in that, The support includes an insertion portion and a support portion connected to the insertion portion. When the first cast sheet and the second cast sheet are wound, they are wound around the support portion. The insertion portion is located outside the column and is used to guide the aerosol-generated product so that the aerosol-generated product is inserted into the column.

10. The heating component according to claim 8, characterized in that, The support member is provided with a clearance portion that extends along the axis of the support member, and the starting ends of the first cast sheet and the second cast sheet are abutted against the clearance portion.

11. The heating component according to claim 1, characterized in that, The heating trajectory is linear and extends along the winding direction of the first and second cast sheets; Alternatively, the heating trajectory may include multiple straight line segments, with any two adjacent straight line segments connected perpendicularly to each other.

12. The heating component according to claim 1, characterized in that, Within the first heating layer, at least one of the heating trajectories has a width different from the widths of the other heating trajectories; Alternatively, within the second heating layer, at least one of the heating trajectories has a width different from the widths of the other heating trajectories.

13. The heating component according to claim 1, characterized in that, Both the first heating layer and the second heating layer include a first electrode and a second electrode. The first electrode and the second electrode extend along the axial direction of the winding direction of the first cast sheet and the second cast sheet, and the two ends of the heating trajectory are electrically connected to the corresponding first electrode and the corresponding second electrode.

14. The heating component according to claim 13, characterized in that, The first electrode is provided with a first pad, and the first tape is provided with a first receiving hole corresponding to the first pad; and / or the second electrode is provided with a second pad, and the second tape is provided with a second receiving hole corresponding to the second pad.

15. The heating component according to claim 14, characterized in that, The first receiving hole is a circular through hole with a diameter of 0.1mm-0.6mm; and / or the second receiving hole is a circular through hole with a diameter of 0.1mm-0.6mm.

16. The heating component according to claim 1, characterized in that, A first insulating layer is provided on the side of the first heating layer away from the first cast sheet; and / or a second insulating layer is provided on the side of the second heating layer away from the second cast sheet.

17. An aerosol generating device, characterized in that, It includes a battery assembly and a heating component as described in any one of claims 1-16, wherein the battery assembly is used to provide electrical energy to the heating component.

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