Heating assembly and aerosol generating device
By designing a needle-shaped heating element and using independent electrode control, the problem of uneven temperature field was solved, achieving uniform heating and consistent suction taste in the aerosol generation device, thus improving the 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
- 2025-03-14
- Publication Date
- 2026-05-01
AI Technical Summary
The existing heating components have uneven temperature field distribution in the circumferential direction, resulting in large circumferential temperature differences in aerosol products, scorching in some areas, and uneven heating in the length direction, leading to significant differences in the sucking experience.
A needle-shaped heating element is designed, which forms an annular heating part by winding a substrate, and uses a first electrode and a second electrode to independently control the heating temperature, so as to achieve uniform circumferential temperature and segmented axial heating. The first electrode is electrically connected to the common terminal and the second electrode is electrically connected to the independent terminal.
It achieves uniform circumferential temperature field and axial uniform heating of the heating element, improving the user experience and ensuring consistent taste at different stages of vaping.
Smart Images
Figure CN224179164U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aerosol generation technology, and in particular to a heating component and an aerosol generation device. Background Technology
[0002] An aerosol generating device is a heated non-combustible appliance that includes a heating element. The heating element is placed inside the aerosol generating product and heats the product to form an aerosol for users to inhale daily.
[0003] In related technologies, the heating components suffer from two main problems. First, the conductive coating's coating path, after winding and forming, results in an uneven temperature field distribution in the circumferential direction, leading to a large circumferential temperature difference in the aerosol-generated product. This uneven heating can cause localized scorching in areas where heat is concentrated, severely impacting the user experience. Second, because all parts of the aerosol-generated product are heated simultaneously and continuously along its length, the user experiences significant differences in the inhalation sensation during the early, middle, and late stages of use. For example, the sensation may transition from a rich and full flavor in the early stages to a thin and loose mist in the later stages, further diminishing the user experience. Utility Model Content
[0004] The purpose of this invention is to provide a heating element and an aerosol generating device to ensure that the heating element forms a uniformly distributed temperature field in the circumferential direction, and to further realize segmented heating control of aerosol generated products, thereby improving the user experience.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A heating element, the heating element being needle-shaped, and comprising:
[0007] Matrix;
[0008] A heating layer is disposed on the substrate. The heating layer includes a first electrode, a plurality of second electrodes, and a plurality of heating elements. The heating elements are arranged side by side and spaced apart along a first direction. The substrate is wound around the first direction to form a needle-like body. The heating elements extend along the winding direction of the substrate. Each heating element includes a common end and an independent end disposed opposite to each other in the extending direction. The first electrode is electrically connected to the plurality of common ends, and the second electrodes are electrically connected to the independent ends one by one. The heating elements are used to independently control the heating temperature.
[0009] As an alternative to the heating component, each of the heating elements is coated onto the substrate to form a coating portion. The multiple coating portions have different extension lengths in the winding direction of the substrate. A portion of the coating portion is covered by the first electrode or the second electrode, and the portion of the multiple coating portions not covered by the first electrode or the second electrode forms the heating element.
[0010] As an alternative to the heating component, the length of the plurality of coating portions varies gradually in the winding direction of the substrate.
[0011] As an alternative to the heating component, the ends of the first electrode and the second electrode away from the heating element are connected to conductive pins, and the extension length of the coating portion away from the conductive pin is greater than the extension length of the coating portion close to the conductive pin.
[0012] As an alternative to the heating component, the plurality of heating elements have the same length of extension in the winding direction of the substrate.
[0013] As an alternative solution for the heating component, the first electrode and the second electrode are provided with a first connection hole at the end away from the heating part. After the substrate is wound to form a needle-like body, a second connection hole is provided on the substrate at the position corresponding to the first connection hole. The first connection hole and the second connection hole are used to connect conductive pins.
[0014] As an alternative to the heating component, the first connecting hole can be a round hole, an elliptical hole, an oblong hole, or a long strip hole.
[0015] As an alternative to the heating component, the shapes of the first connection hole and the second connection hole are matched.
[0016] As an alternative to the heating component, the surface of the substrate is coated with a slurry layer located on the outer periphery of the second connection hole.
[0017] As an alternative to the heating component, the slurry layer is made of the same material as the first electrode or the second electrode.
[0018] As an alternative solution for a heating component, when the substrate is wound N turns to form a needle-like body, and when N is not less than 2, the heating layer is wound at least K1 turns, and K1 is not less than 1.
[0019] As an alternative solution for a heating component, when the substrate is wound N turns to form a needle-like body, and N is not less than 2, the heating part is formed by winding at least K2 turns, and K2 is not less than 1.
[0020] As an alternative to the heating component, the heating element includes a plurality of heating units arranged side by side and spaced apart along the first direction, wherein the heating units are conductive traces.
[0021] As an alternative to the heating component, the heating units on the same heating part may have the same or different widths along the first direction.
[0022] As an alternative to the heating component, any adjacent heating units on the same heating part are equally spaced in the first direction.
[0023] As an alternative to the heating component, the heating unit is elongated.
[0024] As an alternative to the heating component, the heating component further includes a rod core, which includes a support portion and a guide portion. The base is wound around the support portion as an axis to the outer periphery of the support portion. The guide portion is located at one end of the support portion and on one side of the base. The guide portion is used to guide the heating component to be inserted into the aerosol generating article.
[0025] As an alternative to the heating component, the length of the support portion is less than or equal to the length of the base in the first direction.
[0026] As an alternative to the heating element, the core is a ceramic rod.
[0027] An aerosol generating device includes a power supply module and a heating component as described in any of the above embodiments, wherein the power supply module is electrically connected to the heating component.
[0028] Beneficial effects:
[0029] In the first aspect of this utility model, the substrate of the heating component is formed into a needle-like body by winding around a first direction as an axis, and the heating part naturally forms a ring. Since the heating part of this heating component is completely consistent along the circumferential direction, the temperature field in the annular area covered by the same heating part is always consistent in the circumferential direction of the heating component. This avoids the problem of large circumferential temperature difference in aerosol-generated products caused by uneven circumferential temperature field distribution, and the problem of local scorching of aerosol-generated products in some areas with concentrated heat distribution, thus improving the user experience. Multiple heating elements are sequentially spaced along the axial direction of the heating assembly. A first electrode extends along a first direction, and the printed trajectory of the first electrode passes through the common end of the multiple heating elements, thereby achieving electrical connection between the first electrode and the common end of the heating elements. Each heating element has its own independent end on one side relative to the common end, and a second electrode is formed on each heating element. The printed trajectory of each second electrode passes through one of the independent ends, thereby allowing independent temperature control of the area where each heating element is located. By independently controlling the heating temperature through the multiple heating elements of this heating assembly, the tobacco segment of the aerosol product can be gradually and evenly consumed along the axial direction. Therefore, this heating assembly can ensure that there is no significant difference in the user's smoking experience in the early, middle, and late stages, thus improving the user's experience.
[0030] In a second aspect of this utility model, an aerosol generating device equipped with the heating element can achieve segmented heating control of the aerosol generating product inserted therein, while optimizing the temperature field of the aerosol generating product and improving the user experience. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the structure of the planar heating element coated on the substrate according to an embodiment of the present invention;
[0032] Figure 2 This is a first structural schematic diagram of an unwound heating component provided in an embodiment of the present invention;
[0033] Figure 3 This is a schematic diagram of a structure in which a heating element composed of heating units is coated onto a substrate, according to an embodiment of the present invention.
[0034] Figure 4 This is a second structural schematic diagram of the unwound heating component provided in this embodiment of the present invention;
[0035] Figure 5 This is a schematic diagram of the structure of a heating component with the heating layer rolled outwards twice, as provided in an embodiment of this utility model.
[0036] Figure 6 This is a schematic diagram of the structure of a heating component with the heating layer rolled inward twice, provided in an embodiment of this utility model.
[0037] Figure 7 This is a cross-sectional view of a heating component with the heating layer rolled inward twice, provided in an embodiment of this utility model.
[0038] Figure 8 This is a schematic diagram of the core structure provided in an embodiment of the present invention;
[0039] Figure 9 This is a flowchart of the manufacturing process of the heating component provided in this embodiment of the utility model.
[0040] In the picture:
[0041] X, first direction;
[0042] 1. Matrix;
[0043] 2. Heating layer; 200. Coating part; 21. Heating part; 211. Common terminal; 212. Independent terminal; 213. Heating unit; 22. First electrode; 23. Second electrode;
[0044] 3. Slurry layer;
[0045] 4. Core rod; 41. Support section; 42. Guide section;
[0046] 5. Lead wire;
[0047] 6. Flange components;
[0048] 7. Glaze layer;
[0049] 10. First connecting hole; 20. Second connecting hole. Detailed Implementation
[0050] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0051] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0052] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0053] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0054] This embodiment provides a heating element and an aerosol generating device including the heating element. The aerosol generating device can be used in conjunction with an aerosol generating product to generate aerosols.
[0055] 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.
[0056] As used herein, the term "aerosol-generating matrix" refers to a matrix capable of releasing volatile substances to form inhalable aerosols. An 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.
[0057] 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.
[0058] 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.
[0059] The heating element in this embodiment 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 aerosol-generating matrix can exit from the proximal end of the aerosol-generating matrix and be inhaled into the user's mouth.
[0060] Please see the appendix Figure 1 - Appendix Figure 4 The first aspect of this embodiment provides a heating component, which is needle-shaped and is inserted into an aerosol generating product during use. The heating component contacts a tobacco segment circumferentially, thereby heating the aerosol generating matrix to produce aerosol for the user to inhale. The heating component includes a substrate 1 and a heating layer 2. The heating layer 2 is disposed on the substrate 1 and includes a first electrode 22, a plurality of second electrodes 23, and a plurality of heating elements 21. The heating elements 21 are arranged side-by-side and spaced apart along a first direction X. The substrate 1 is wound around the first direction X to form a needle-shaped body. The heating elements 21 extend along the winding direction of the substrate 1 and include a common end 211 and an independent end 212 disposed opposite each other in the extending direction. The first electrode 22 is electrically connected to the plurality of common ends 211, and the second electrodes 23 are electrically connected to the independent ends 212 one by one. The heating elements 21 are used to independently control the heating temperature.
[0061] Specifically, before winding, the substrate 1 is a rectangular plate structure with a small thickness. The substrate 1 is made of ceramic material and can be formed by sintering ceramic tape. The tape can include ceramic powder, solvent, dispersant, plasticizer and functional additives, etc.
[0062] The heating layer 2 is a conductive paste coated or printed on the surface of the substrate 1. The heating element 21 is made of a material with high resistivity and is used to heat the aerosol-generated product by generating heat through the thermal effect of current. The first electrode 22 and the second electrode 23 are made of materials with low resistivity and are used to guide the current. The substrate 1 is formed into a needle-like body by winding around the first direction X as the axis, and the heating element 21 naturally forms a ring shape. Since the heating element 21 of this heating component is completely consistent along the circumferential direction, the temperature field in the annular area covered by the same heating element 21 is always consistent in the circumferential direction of the heating component. This avoids the problem of large circumferential temperature difference in the aerosol-generated product due to uneven circumferential temperature field distribution, and the problem of local scorching of the aerosol-generated product in some areas with concentrated heat distribution, thus improving the user experience.
[0063] Furthermore, multiple heating elements 21 are sequentially spaced along the axial direction of the heating assembly. The first electrode 22 extends along the first direction X and is strip-shaped. The printing trajectory of the first electrode 22 passes through the common end 211 of the multiple heating elements 21, thereby achieving electrical connection between the first electrode 22 and the common end 211 of the heating elements 21. Each heating element 21 has its own independent end 212 on one side relative to the common end 211. A second electrode 23 is formed on each heating element 21. The printing trajectory of each second electrode 23 passes through one of the independent ends 212, thereby allowing independent control of the temperature field of each heating element 21.
[0064] The multiple heating elements 21 of this heating assembly can independently control their heating temperature. It is understood that the multiple heating elements 21 can heat up simultaneously, but their heating power is not the same. Specifically, the power can gradually vary along the axial direction of the tobacco segment, resulting in different temperatures at different points along the axial direction of the tobacco segment at the same time. For example, the heating element 21 furthest from the mouthpiece in the tobacco segment starts heating up first and has a higher heating power, thus achieving rapid heating of the furthest heating element 21; while the heating element 21 near the mouthpiece in the tobacco segment has a relatively lower heating power, thus achieving continuous preheating of the near-end heating element 21; as the internal matrix of the furthest tobacco segment is gradually consumed, the power of the near-end heating element 21 is gradually increased.
[0065] Furthermore, the multiple heating elements 21 can operate at different times. For example, the heating element 21 at the far end of the tobacco segment from the mouthpiece can start generating heat first, thus achieving rapid heating of the far-end heating element 21; while the heating element 21 at the near end of the tobacco segment from the mouthpiece can start heating after a certain period of time and gradually increase in temperature. By independently controlling the heating of multiple heating elements 21, the tobacco segment can be gradually and evenly heated and consumed axially. Therefore, when heating the cigarette, it can be ensured that the aerosol inhaled by the user has a consistent taste and flavor in the early, middle and late stages of heating, thus improving the user experience.
[0066] Please continue to refer to the appendix. Figure 1 and attached Figure 2 When each heating element 21 is coated on the substrate 1, a coating element 200 is formed. The multiple coating elements 200 have different extension lengths in the winding direction of the substrate 1. A portion of the coating element 200 is covered by the first electrode 22 or the second electrode 23. The portion of the multiple coating elements 200 that is not covered by the first electrode 22 or the second electrode 23 forms the heating element 21.
[0067] Specifically, the two ends of the heating element 21 extend outward by a certain length to form a coating element 200, and multiple coating elements 200 are distributed sequentially at intervals in the first direction X. The coating tracks of the first electrode 22 and the second electrode 23 cover both sides of the coating element 200, thereby realizing the electrical connection between the heating element 21 and the first electrode 22 and the second electrode 23 respectively.
[0068] In this embodiment, the two ends of the coating portion 200 are respectively covered by the first electrode 22 or the second electrode 23, which can increase the conductive contact area and thus improve the reliability of the electrical connection; at the same time, the area not covered by the first electrode 22 or the second electrode 23 forms a heating portion 21, and the multiple heating portions 21 have the same extension length in the winding direction of the substrate 1, which can effectively ensure that the needle-shaped heating component generates heat uniformly in the circumferential direction, thereby balancing the temperature field.
[0069] Furthermore, the extension length of the multiple coating portions 200 gradually changes in the winding direction of the substrate 1.
[0070] The extension length of the coating portion 200 in the winding direction of the substrate 1 gradually changes, accommodating a layout where multiple coating portions 200 are arranged sequentially at intervals in the first direction X, and the corresponding multiple second electrodes 23 are all arranged parallel to the first direction X. Specifically, the first electrode 22 and the second electrode 23 are connected to conductive pins at the ends away from the heating portion 21, and the extension length of the coating portion 200 away from the conductive pin is greater than the extension length of the coating portion 200 closer to the conductive pin. The coating portion 200 closest to the conductive pin has the shortest extension length, and the second electrode 23 connected here can be directly coated with a straight trajectory; while the coating portion 200 farther from the conductive pin has a larger extension length, and the second electrode 23 connected here can be coated with an L-shaped trajectory. For example, the coating portion 200 can be coated first in a direction perpendicular to the first direction X, and then rotated 90 degrees and coated again along the first direction X, so that the multiple second electrodes 23 extend parallel to the first direction X.
[0071] In some embodiments, the first electrode 22 and the second electrode 23 are provided with a first connection hole 10 at the end away from the heating part 21. After the substrate 1 is wound to form a needle-like body, a second connection hole 20 is provided on the substrate 1 at the position corresponding to the first connection hole 10. The first connection hole 10 and the second connection hole 20 are used to connect conductive pins.
[0072] Specifically, the first electrode 22 and the second electrode 23 need to be electrically connected to the wires through conductive pins to achieve continuous power supply to the entire heating component. The end of the needle-shaped heating component away from the heating part 21 is used to connect the conductive pin. In some examples, a first connecting hole 10 is provided at the end of the first electrode 22 and the second electrode 23 away from the heating part 21. The first connecting hole 10 can be a round hole, an elliptical hole, a waist-shaped hole, or a long hole. In this embodiment, a second connecting hole 20 is further provided on the substrate 1. The shapes of the first connecting hole 10 and the second connecting hole 20 match. The second connecting hole 20 can also be a round hole, an elliptical hole, a waist-shaped hole, or a long hole. The conductive pin can be directly inserted into the first connecting hole 10 and the second connecting hole 20.
[0073] In this embodiment, after the entire substrate 1 is wound several times to form a needle-like body, the first connecting hole 10 and the second connecting hole 20 can be aligned and connected. Before connecting the conductive pins, solder can be injected into the first connecting hole 10 and the second connecting hole 20. On the one hand, this facilitates the electrical connection between the first electrode 22 and the second electrode 23 and the corresponding conductive pins; on the other hand, increasing the amount of solder can enhance the stability and reliability of the electrical connection between the conductive pins and the first electrode 22 and the second electrode 23.
[0074] Please see the appendix Figure 5 -Appendix Figure 7 It should be noted that the heating element 21 can be wound in two ways: inward winding and outward winding. Inward winding means that the heating surface of the heating element 21 faces inward after being wound through the substrate 1, while outward winding means that the heating surface of the heating element 21 faces outward after being wound through the substrate 1. Each winding method has its own advantages: inward winding allows the heating element 21 to face inward, preventing wear on the coating of the heating element 21 when the aerosol-generated product is frequently inserted and removed from the needle-shaped heating component, thus maintaining a longer service life; outward winding allows the heating element 21 to face outward, enabling rapid heating upon energization and improving heating efficiency.
[0075] Furthermore, the surface of the substrate 1 is coated with a slurry layer 3, which is located on the outer periphery of the second connecting hole 20.
[0076] In this embodiment, the second connecting hole 20 penetrates the substrate 1, and the first connecting hole 10 penetrates the substrate 1 and the electrode on the substrate 1. Therefore, the conductive paste of the electrode is covered around the first connecting hole 10. For the second connecting hole 20, since the substrate 1 is not conductive, a paste layer 3 is further formed on the outer periphery of the second connecting hole 20. The material of the paste layer 3 is the same as that of the first electrode 22 or the second electrode 23. By further coating the outer periphery of the second connecting hole 20 with conductive paste to form the paste layer 3, the area of the conductive material can be increased. On the one hand, this facilitates electrical connection with the corresponding conductive pin, and on the other hand, it can enhance the stability and reliability of the electrical connection between the conductive pin and the corresponding electrode.
[0077] Optionally, when the substrate 1 is wound N turns to form a needle-like body, and when N is not less than 2, the heating layer 2 is wound at least K1 turns, and K1 is not less than 1.
[0078] Specifically, when the substrate 1 is wound to form a needle-like body, the substrate 1 forms at least two winding layers, and the entire heating layer 2 is wound at least one winding layer. At this time, the heating part 21 can cover the entire circumferential area with one winding layer or less than one winding layer. If the heating part 21 occupies a single winding layer, it can ensure that the heating part 21 covers the entire circumferential area, thereby ensuring a uniform temperature field in the circumferential direction. If the heating part 21 covers the entire circumferential area with less than one winding layer, but since the heating layer 2 is wound at least one winding layer, there is a gap between the beginning and end of the heating part 21. However, the heat generated by the heating part 21 can be transferred between the first electrode 22 or the second electrode 23 at both ends of the heating part 21, so that the heat in the circumferential direction of the entire needle-like body can still be nearly uniformly distributed. Of course, this method requires optimization of the width parameters of the first electrode 22 or the second electrode 23. Under the premise of ensuring smooth circuit conduction, the width of the first electrode 22 or the second electrode 23 is reduced so that the winding of the heating part 21 is as close as possible to one winding layer.
[0079] Optionally, when the substrate 1 is wound N turns to form a needle-like body, and N is not less than 2, the heating part 21 is formed by winding at least K2 turns, and K2 is not less than 1.
[0080] In this embodiment, regardless of the winding method used, the substrate 1 can be wound several times along the first direction X. For example, when the substrate 1 is wound two times, the heating element 21 is wound at least one time, thus forming a 360° circumferential arrangement throughout the entire circumferential direction. This ensures that the heating element 21 covers an area throughout the entire circumferential direction, thereby ensuring a uniform temperature field in the circumferential direction. Of course, as the number of windings of the substrate 1 increases, the number of circumferential turns of the heating element 21 can also remain at one turn or increase accordingly.
[0081] Please continue to refer to the appendix. Figure 3 and attached Figure 4 Optionally, the heating element 21 includes a plurality of heating units 213 arranged in parallel and spaced apart along the first direction X, and the heating units 213 are conductive traces.
[0082] Specifically, the heating element 213 is elongated and arranged in parallel with each other, and each heating element 213 can be used to carry current independently. Therefore, multiple heating elements 213 form parallel currents. In this embodiment, each heating part 21 includes four heating elements 213. The width of the heating elements 213 on the same heating part 21 along the first direction X can be the same or different, and usually the width of the heating element 213 is greater than 0.2 mm.
[0083] By dividing the overall heating element 21 into multiple heating units 213, the temperature field in the first direction X can be further optimized while ensuring a uniform temperature field. This allows for an alternating distribution of high and low temperatures, thereby dispersing the high-temperature heat more effectively, improving the heating state of the aerosol-generated product, and enhancing the user's inhalation experience. The width of the multiple heating units 213 can be adjusted according to the type of aerosol-generated product; this embodiment does not impose specific limitations.
[0084] Furthermore, the spacing between any adjacent heating elements 213 on the same heating element 21 is equal in the first direction X.
[0085] In this embodiment, the spacing between multiple adjacent heating units 213 in the first direction X represents the density of the heating units 213 arranged on the same heating part 21. By adjusting the spacing, the density of the multiple heating units 213 can be adjusted, thereby further adjusting the temperature field distribution of the needle-shaped heating component. By making the spacing between the heating units 213 equal in the first direction X, the temperature field change in the first direction X of the same heating part 21 can be made more consistent. Of course, in other embodiments, the distance between adjacent heating units 213 on the same heating part 21 can be unequal according to the adjustment needs of the temperature field distribution of the heating component.
[0086] Please see the appendix Figure 8 In some embodiments, the heating element further includes a core 4. The core 4 includes a support portion 41 and a guide portion 42. The base 1 is wound around the support portion 41 around its outer periphery. The guide portion 42 is located at one end of the support portion 41 and on one side of the base 1. The guide portion 42 is used to guide the heating element into the aerosol generating article.
[0087] In this embodiment, the core 4 is made of ceramic material, and the support portion 41 and the guide portion 42 are an integral structure. The support portion 41 is cylindrical, and the substrate 1 coated with the heating layer 2 is directly wound around the support portion 41. The guide portion 42 is exposed on one side of the substrate 1. The guide portion 42 is conical. After the heating component is wound and formed, it can be easily inserted into the aerosol generation product through the guide portion 42. The core 4 has sufficient support strength for the substrate 1 so that the heating component has sufficient strength to meet the requirement of frequent insertion and removal of the aerosol generation product without bending.
[0088] Furthermore, the length of the support portion 41 is less than or equal to the length of the base 1 in the first direction X.
[0089] For example, the support portion 41 can be equal to the length of the base 1 in the first direction X, thus keeping the bottom of the heating element flat. Alternatively, the support portion 41 can be less than the length of the base 1 in the first direction X, thus forming a columnar groove at the bottom of the heating element. After the wound base 1 undergoes a sintering process, its structural strength is significantly enhanced, meeting its own support strength requirements. Therefore, by reducing the length of the support portion 41, while ensuring sufficient support strength, material usage can be appropriately reduced, lowering costs. Furthermore, this columnar groove can be used in conjunction with positioning posts on other mounting structures to ensure accurate positioning and improve assembly efficiency.
[0090] The second aspect of this embodiment also relates to an aerosol generating device, which includes a power supply module and a heating component, wherein the power supply module is electrically connected to the heating component.
[0091] In this embodiment, the power supply module is used to provide electrical energy. The aerosol generating device, which integrates this heating component, can realize segmented heating control of the aerosol generating product inserted therein, and at the same time optimize the temperature field of the aerosol generating product, thereby improving the user experience.
[0092] The following is in conjunction with the appendix Figure 9 This section introduces the specific manufacturing process of this heating element.
[0093] S1. Cut the cast film to the preset size to form the substrate 1;
[0094] S2. A heating layer 2 is printed on the surface of the substrate 1. Based on the surface structure and strip structure of the heating part 21, multiple heating parts 21 are printed at intervals to form multiple segments of the heating area. A first electrode 22 and multiple second electrodes 23 are printed at both ends of the heating part 21 respectively.
[0095] S3. Form a first connecting hole 10 on the first electrode 22 and the second electrode 23, and form a second connecting hole 20 at the corresponding position on the substrate 1.
[0096] S4, provides core 4 (see attached) Figure 8 Step I) involves winding the substrate 1 around the core 4 and using an isostatic pressing sintering process to form a ring structure with a certain structural strength (see attached diagram). Figure 8 Step II in the process);
[0097] S5. Insert the conductive pins of lead 5 into the first connecting hole 10 and the second connecting hole 20, and complete the soldering (see attached diagram). Figure 8 Step III in the process;
[0098] S6. Fit the flange 6 onto the end of the heating element away from the guide portion 42 of the rod core 4, and pass the lead wire 5 through the flange 6 (see attached). Figure 8 (Step IV in the process); the flange 6 ensures that the heating element is stably fixed in the inner cavity of the aerosol generating device;
[0099] S7. Apply a glazing process to the outer periphery of the installed heating element (see attached document). Figure 8 (Step V in the process); The glazing process can form a glaze layer 7 on the surface of the heating element. The glaze layer 7 can provide protection and further enhance the surface structural strength of the heating element. It can also insulate the heating element from the outside.
[0100] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A heating element, characterized in that, The heating element is needle-shaped and includes: Matrix (1); A heating layer (2) is disposed on the substrate (1). The heating layer (2) includes a first electrode (22), a plurality of second electrodes (23), and a plurality of heating parts (21). The heating parts (21) are arranged side by side and spaced apart along a first direction (X). The substrate (1) is wound around the first direction (X) to form a needle-like body. The heating parts (21) extend along the winding direction of the substrate (1). The heating parts (21) include a common end (211) and an independent end (212) arranged opposite to each other in the extension direction. The first electrode (22) is electrically connected to the plurality of common ends (211), and the second electrodes (23) are electrically connected to the independent ends (212) one by one. The heating parts (21) are used to independently control the heating temperature.
2. The heating component according to claim 1, characterized in that, When each of the heating elements (21) is coated onto the substrate (1), a coating element (200) is formed. The multiple coating elements (200) have different extension lengths in the winding direction of the substrate (1). A portion of the coating element (200) is covered by the first electrode (22) or the second electrode (23). The portion of the multiple coating elements (200) that is not covered by the first electrode (22) or the second electrode (23) forms the heating element (21).
3. The heating component according to claim 2, characterized in that, The length of the multiple coating portions (200) gradually changes in the winding direction of the substrate (1).
4. The heat generating component of claim 2, wherein, The first electrode (22) and the second electrode (23) are connected to a conductive pin at the end away from the heating part (21), and the extension length of the coating part (200) away from the conductive pin is greater than the extension length of the coating part (200) close to the conductive pin.
5. The heating component according to claim 1, characterized in that, The multiple heating elements (21) have the same length of extension in the winding direction of the substrate (1).
6. The heating component according to claim 1, characterized in that, The first electrode (22) and the second electrode (23) are provided with a first connection hole (10) at one end away from the heating part (21). After the substrate (1) is wound to form a needle-like body, a second connection hole (20) is provided on the substrate (1) at a position corresponding to the first connection hole (10). The first connection hole (10) and the second connection hole (20) are used to connect conductive pins.
7. The heat generating assembly of claim 6, wherein, The first connecting hole (10) is a round hole, an elliptical hole, a waist-shaped hole, or a long strip hole.
8. The heat generating component of claim 6, wherein, The shapes of the first connecting hole (10) and the second connecting hole (20) are matched.
9. The heating element according to claim 6, characterized in that, The surface of the substrate (1) is coated with a slurry layer (3), which is located on the outer periphery of the second connecting hole (20).
10. The heat generating component of claim 9, wherein, The slurry layer (3) is made of the same material as the first electrode (22) or the second electrode (23).
11. The heat generating component of claim 1, wherein, When the substrate (1) is wound N turns to form a needle-like body, and when N is not less than 2, the heating layer (2) is wound at least K1 turns, and K1 is not less than 1.
12. The heat generating component of claim 1, wherein, When the substrate (1) is wound N turns to form a needle-like body, and N is not less than 2, the heating part (21) is formed by winding at least K2 turns, and K2 is not less than 1.
13. The heating component according to claim 1, characterized in that, The heating element (21) includes a plurality of heating units (213) arranged side by side and spaced apart along the first direction (X), and the heating unit (213) is a conductive trajectory.
14. The heating component according to claim 11, characterized in that, The widths of the heating units (213) on the same heating part (21) along the first direction (X) may be the same or different.
15. The heat generating component of claim 14, wherein, The spacing between any adjacent heating units (213) on the same heating part (21) is equal in the first direction (X).
16. The heating component according to claim 14, characterized in that, The heating unit (213) is elongated.
17. The heating component according to any one of claims 1-16, characterized in that, The heating element also includes a core (4), which includes a support (41) and a guide (42). The base (1) is wound around the support (41) as an axis to the outer periphery of the support (41). The guide (42) is located at one end of the support (41) and on one side of the base (1). The guide (42) is used to guide the heating element to be inserted into the aerosol generating product.
18. The heating element according to claim 17, characterized in that, The length of the support (41) is less than or equal to the length of the base (1) in the first direction (X).
19. The heat generating component of claim 17, wherein, The core rod (4) is a ceramic rod.
20. An aerosol-generating device comprising, It includes a power supply module and a heating component as described in any one of claims 1-19, wherein the power supply module is electrically connected to the heating component.