Heating assembly and aerosol generating device
By adjusting the area ratio of the heating unit and the electrode unit and designing a cylindrical structure, the problem of uneven circumferential temperature of the heating component was solved, achieving a more uniform heating effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN FIRST UNION TECH CO LTD
- Filing Date
- 2025-03-28
- Publication Date
- 2026-05-05
AI Technical Summary
The existing heating element has uneven temperature distribution in the circumferential direction, resulting in uneven heating.
By adjusting the area ratio of the heating element and the electrode element, the ratio of the total resistance of the heating element to the total resistance of the electrode element is made greater than or equal to 8. The width and distribution of the electrode element are optimized and designed into a cylindrical structure to ensure uniform current distribution.
This achieves a more uniform temperature distribution in the circumferential direction of the heating component, avoiding overheating on the side near the solder pad and undercooling on the side away from the solder pad, thus improving the uniformity of heating.
Smart Images
Figure CN224192966U_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 coating on a support to heat the aerosol generating article.
[0003] In the past, the heating coating and electrode coating of heating components were printed using materials with a certain temperature coefficient of resistance. In order to meet the heating requirements, the electrode coating could be set to divide the heating coating into multiple segments. However, since the electrode coating also has resistance, it diverts a certain voltage in the circuit, resulting in a higher temperature on the side of the electrode coating closer to the pad and a lower temperature on the side of the electrode coating farther from the pad, resulting in uneven temperature distribution in the circumferential direction of the heating component. Utility Model Content
[0004] To address the issue of uneven temperature distribution in the circumferential direction of the heating element.
[0005] This application provides a heating component, including:
[0006] Heating substrate;
[0007] A heating layer is disposed on the heating substrate, and the heating substrate and the heating layer are wound together into a cylindrical shape. The heating layer includes multiple electrode units and multiple heating units. Each heating unit is electrically connected to each electrode unit. The electrode units divide the heating unit into multiple segments.
[0008] By adjusting the area ratio of the heating element and the electrode element, the ratio of the total resistance of the heating element to the total resistance of the electrode element is made greater than or equal to 8.
[0009] This application provides a heating component, wherein the ratio of the resistance of the heating unit to the resistance of the electrode unit is greater than or equal to 10 and less than or equal to 30.
[0010] This application provides a heating component, wherein the width of the electrode unit in the direction perpendicular to its extension is greater than the width of the heating unit in the direction perpendicular to its extension.
[0011] This application provides a heating component, wherein each electrode unit extends along the winding direction of the heating substrate, and a plurality of electrode units are spaced apart along the axial direction of the winding direction of the heating substrate.
[0012] This application provides a heating component in which the resistance of a plurality of electrode units gradually increases along the axial direction of the winding direction of the heating substrate.
[0013] This application provides a heating component in which the width of a plurality of electrode units gradually decreases along the axial direction of the winding direction of the heating substrate.
[0014] This application provides a heating component, each of which includes multiple heating tracks. Each heating track extends along the axial direction of the winding direction of the heating substrate, and the multiple heating tracks are distributed at intervals along the winding direction of the heating substrate.
[0015] This application provides a heating component, wherein each electrode unit is provided with a pad for receiving current, and within the same heating unit, each heating trajectory is electrically connected to the corresponding pad, and the resistance of the heating trajectory closer to the pad is greater than the resistance of the heating trajectory farther from the pad.
[0016] This application provides a heating component in which the width of the heating trajectory on both sides of the pad gradually increases.
[0017] This application provides a heating component, wherein the heating substrate includes a guide section, and the radius of the guide section gradually decreases along the direction in which the aerosol-generated article is inserted.
[0018] 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.
[0019] The ratio of the resistance of the heating unit to the resistance of the electrode unit in the heating component of this application is greater than or equal to 8, which makes the voltage of the electrode unit in the circuit smaller, avoiding the situation that the heating unit closer to the solder pad generates more heat and the heating unit farther away from the solder pad generates less heat, and making the temperature distribution in the circumferential direction of the heating component more uniform. Attached Figure Description
[0020] 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.
[0021] Figure 1 This is a schematic diagram of the front of a heating component according to an embodiment of this application;
[0022] Figure 2 This is a schematic diagram of the back side of a heating component according to an embodiment of this application;
[0023] Figure 3This is a schematic diagram of the front of a heating component according to an embodiment of this application;
[0024] Figure 4 This is a schematic diagram of the back side of a heating component according to an embodiment of this application;
[0025] Figure 5 This is a schematic diagram of a heating component according to an embodiment of this application;
[0026] Figure 6 This is a schematic diagram of a heating component according to an embodiment of this application;
[0027] Figure 7 This is a schematic diagram of an aerosol generating apparatus according to an embodiment of this application.
[0028] In the picture:
[0029] 10. Heating components;
[0030] 1. Heating substrate; 11. Guiding section;
[0031] 2. Heating layer; 21. Electrode unit; 211. Pad; 22. Heating unit; 221. Heating trajectory;
[0032] 20. Battery components;
[0033] 100. Aerosol generating device. Detailed Implementation
[0034] 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.
[0035] 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.
[0036] 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.
[0037] 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.
[0038] 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.
[0039] 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.
[0040] 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.
[0041] 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.
[0042] 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.
[0043] 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.
[0044] One embodiment of 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 substrate 1 and the heating layer 2 are wound into a cylindrical shape. The heating layer 2 includes multiple electrode units 21 and multiple heating units 22. Each heating unit 22 is electrically connected to each electrode unit 21. The electrode units 21 divide the heating unit 22 into multiple segments. By adjusting the area of the heating unit 22 and the electrode units 21, the ratio of the total resistance of the heating unit 22 to the total resistance of the electrode units 21 is greater than or equal to 8.
[0045] The ratio of the total resistance of the heating element to the total resistance of the electrode element in this application is greater than or equal to 8, which results in a smaller voltage drop across the electrode element in the circuit. This avoids the situation where the heating element closer to the pad generates more heat while the heating element farther from the pad generates less heat, thus making the temperature distribution in the circumferential direction of the heating element more uniform.
[0046] In one embodiment of this application, the ratio of the total resistance of the heating unit 22 to the total resistance of the electrode unit 21 is greater than or equal to 10 and less than or equal to 30. In another embodiment of this application, the ratio of the total resistance of the heating unit 22 to the total resistance of the electrode unit 21 is 10, 12, 15, 20, 25, 28, or 30.
[0047] In one embodiment of this application, the width of the electrode unit 21 perpendicular to its extension direction is greater than the width of the heating unit 22 perpendicular to its extension direction. By adjusting the width of the electrode unit 21 to be greater than the width of the heating unit 22, the total resistance of the electrode unit 21 is made less than the total resistance of the heating unit 22.
[0048] In one embodiment of this application, the heating unit 22 and the electrode unit 21 are made of materials with different resistivities. In another embodiment, the resistivity of the electrode unit 21 is less than that of the heating unit 22. The electrode unit 21 is mainly used to guide current, while the heating unit 22 is mainly used to generate heat.
[0049] In one embodiment of this application, each electrode unit 21 extends along the winding direction of the heating substrate 1, and multiple electrode units 21 are spaced apart along the axial direction of the winding direction of the heating substrate 1.
[0050] In one embodiment of this application, the resistance of multiple electrode units 21 gradually increases along the axial direction of the winding direction of the heating substrate 1. When multiple electrode units 21 are connected to the circuit, the voltage distributed by each electrode unit 21 tends to be the same along the direction of current inflow, and the heat generated by each electrode unit 21 is also approximately the same, thereby making the heat distribution of the heating component 10 on the axis more uniform.
[0051] In one embodiment of this application, the width of the plurality of electrode units 21 along the axial direction of the winding direction of the heating substrate 1 gradually decreases, thereby causing the resistance of the plurality of electrode units 21 along the axial direction of the winding direction of the heating substrate 1 to gradually increase.
[0052] In one embodiment of this application, each heating unit 22 includes multiple heating tracks 221, each heating track 221 extending along the axial direction of the winding direction of the heating substrate 1, and the multiple heating tracks 221 are distributed at intervals along the winding direction of the heating substrate 1.
[0053] In one embodiment of this application, the dimension of the heating trajectory 221 in the winding direction of the heating substrate 1 is the width of the heating trajectory 221, and at least one heating trajectory 221 has a different width from the other heating trajectories 221. In this way, the resistance distribution on the heating unit 22 can be adjusted according to the requirements, thereby enabling the temperature field distribution of the heating substrate 1 to meet the different heating requirements of the aerosol generation products.
[0054] In one embodiment of this application, such as Figures 5-6 As shown, each electrode unit 21 is provided with a pad 211 for connecting current. Within the same heating unit 22, each heating trajectory 221 is electrically connected to its corresponding pad 211, and the resistance of the heating trajectory 221 closer to the pad 211 is greater than the resistance of the heating trajectory 221 farther from the pad 211. This greater resistance of the heating trajectory 221 closer to the pad 211 results in a more uniform voltage distribution across the multiple heating trajectories 221, leading to a more uniform temperature distribution in the circumferential direction of the heating component 10.
[0055] In one embodiment of this application, the spacing between any two adjacent heating tracks 221 is equal in the winding direction of the heating substrate 1. That is, the multiple heating tracks 221 are evenly distributed. In another embodiment of this application, the density of the multiple heating tracks 221 gradually changes in the winding direction of the heating substrate 1. It should be noted that the "density of the multiple heating units 22" here can be understood as the distribution of the multiple heating tracks 221. When the multiple heating tracks 221 are relatively concentrated (the spacing between any two adjacent heating tracks 221 is small), the distribution of the multiple heating tracks 221 is relatively dense; when the multiple heating tracks 221 are relatively dispersed (the spacing between any two adjacent heating tracks 221 is large), the distribution of the multiple heating tracks 221 is relatively sparse. Here, "relatively concentrated" and "relatively dispersed" can be understood as relative concepts. In one embodiment of this application, the density of the multiple heating tracks 221 gradually decreases in the winding direction of the heating substrate 1.
[0056] In one embodiment of this application, the resistance of the heating traces 221 on both sides of the pad 211 gradually decreases. In another embodiment of this application, the width of the heating traces 221 on both sides of the pad 211 gradually increases.
[0057] In one embodiment of this application, a plurality of pads 211 are spaced apart along the axial direction of the winding direction of the heating substrate 1. In another embodiment of this application, the plurality of pads 211 are located on the same straight line.
[0058] In one embodiment of this application, the heating trajectory 221 and the electrode unit 21 are perpendicular. In one embodiment of this application, multiple heating trajectories 221 are parallel to each other. In one embodiment of this application, multiple electrode units 21 are parallel to each other. It should be noted that the perpendicularity or parallelism described in this application are generally perpendicular or parallel. For example, when multiple heating trajectories 221 are parallel, the angle between two heating trajectories 221 is 0°-10°, and when multiple heating trajectories 221 are perpendicular, the angle between two heating trajectories 221 is 80°-90°.
[0059] In one embodiment of this application, the heating substrate 21 is wound into a hollow cylindrical shape and forms a hollow cavity, which can be inserted into the aerosol generation article.
[0060] In one embodiment of this application, the heating substrate 1 includes a guide section 11, the radius of which gradually decreases along the direction of insertion of the aerosol generating article. That is, the end of the heating substrate 1 for insertion of the aerosol generating article has a flared section to facilitate insertion of the aerosol generating article.
[0061] 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.
[0062] It should be noted that 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.
[0063] 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.
[0064] One embodiment of this application provides an aerosol generating apparatus, such as... Figure 7 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.
[0065] 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 substrate and the heating layer are wound together into a cylindrical shape. The heating layer includes multiple electrode units and multiple heating units. Each heating unit is electrically connected to each electrode unit. The electrode units divide the heating unit into multiple segments. By adjusting the area ratio of the heating element and the electrode element, the ratio of the total resistance of the heating element to the total resistance of the electrode element is made greater than or equal to 8.
2. The heating component according to claim 1, characterized in that, The ratio of the resistance of the heating unit to the resistance of the electrode unit is greater than or equal to 10 and less than or equal to 30.
3. The heating component according to claim 1, characterized in that, The width of the electrode unit in the direction perpendicular to its extension is greater than the width of the heating unit in the direction perpendicular to its extension.
4. The heating component according to claim 1, characterized in that, Each of the electrode units extends along the winding direction of the heating substrate, and the plurality of electrode units are spaced apart along the axial direction of the winding direction of the heating substrate.
5. The heating component according to claim 1, characterized in that, The resistance of the plurality of electrode units gradually increases along the axial direction of the winding direction of the heating substrate.
6. The heating component according to claim 1, characterized in that, The width of the plurality of electrode units gradually decreases along the axial direction of the winding direction of the heating substrate.
7. The heating component according to claim 1, characterized in that, Each heating unit includes multiple heating tracks, each heating track extending along the axial direction of the winding direction of the heating substrate, and the multiple heating tracks are distributed at intervals along the winding direction of the heating substrate.
8. The heating element according to claim 7, characterized in that, Each electrode unit is provided with a pad for receiving current. Within the same heating unit, each heating trajectory is electrically connected to the corresponding pad, and the resistance of the heating trajectory closer to the pad is greater than the resistance of the heating trajectory farther from the pad.
9. The heating element according to claim 8, characterized in that, The width of the heating trajectory on both sides of the pad gradually increases.
10. The heating component according to claim 1, characterized in that, The heating substrate includes a guide section, the radius of which gradually decreases along the direction in which the aerosol-generated product is inserted.
11. An aerosol generating device, characterized in that, It includes a battery assembly and a heating component as described in any one of claims 1-10, wherein the battery assembly is used to provide electrical energy to the heating component.