Heating body, atomizer, and aerosol generation device

Abstract

A heating body (10), an atomizer (100), and an aerosol generation device (1000). The heating body (10) comprises a base body (11) and a heating member (13). One end of a first sub-portion (1355) is connected to one end of a heating portion (131) and one end of a second sub-portion (1357), the other end of the first sub-portion (1355) passes through a first end (111) of the base body (11), and the other end of the second sub-portion (1357) extends towards a second end (113) of the base body (11) or a side wall of the base body (11).

Description

Heating element, atomizer and aerosol generating device

[0001] Priority information

[0002] This application claims priority and benefits to patent application No. 202422629929.2, filed with the China National Intellectual Property Administration on October 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of electronic atomization technology, and more specifically, to a heating element, an atomizer, and an aerosol generating device. Background Technology

[0004] An aerosol generating device is a small device that uses heating technology to act on an aerosol generating matrix and generate aerosols. It mainly includes two types of devices: those for atomizing solid matrices and those for atomizing liquid matrices. In related technologies, the atomizer in an aerosol generating device for a liquid matrix includes a heating element, which comprises a substrate and a heating element. The heating element heats and atomizes the aerosol generating matrix in the substrate to generate aerosols. The heating element is disposed inside the substrate, which includes a first end and a second end. The heating element includes a heating section, which also includes a first end and a second end, with the first end of the heating section being closer to the first end of the substrate than the second end. Generally, the two leads connecting to the first and second ends of the heating section are both led out from the same end of the substrate, for example, both from the first end. However, this arrangement results in a long lead distance for the leads connected to the second end of the heating section, leading to unstable structural support of the heating element before molding, which in turn makes the molded heating element prone to changes and results in poor product consistency. Summary of the Invention

[0005] The embodiments of this application provide a heating element, an atomizer, and an aerosol generating device.

[0006] The heating element of this application includes a substrate and a heating element. The substrate includes a first end, a second end, a sidewall connecting the first end and the second end, and an atomization passage penetrating the first end and the second end. The substrate also includes a liquid guiding passage, which communicates with the atomization passage and is used to allow the aerosol generation matrix to flow. The heating element is embedded in the substrate and includes a heating part, a first conductive part, and a second conductive part. The heating part surrounds the atomization passage and is used to generate heat when energized to heat the aerosol generation matrix. The first conductive part and the second conductive part are both electrically connected to the heating part and pass through the first end of the substrate. The second conductive part includes a first sub-part and a second sub-part. One end of the first sub-part is connected to one end of both the heating part and the second sub-part. The other end of the first sub-part passes through the first end of the substrate, and the other end of the second sub-part extends toward the second end of the substrate or the sidewall of the substrate.

[0007] In some embodiments, the heating element is embedded in the substrate and spaced apart from both the first end and the second end of the substrate.

[0008] In some embodiments, the heating element includes a first end and a second end opposite to each other, wherein the first end of the heating element is closer to the first end of the substrate than the second end of the heating element. The first end of the first conductive element passes through the first end of the substrate, and the second end of the first conductive element is electrically connected to the first end of the heating element; the first end of the second conductive element passes through the first end of the substrate, and the second end of the second conductive element is further away from the first end of the substrate than the heating element.

[0009] In some embodiments, the second end of the second conductive portion is flush with the second end of the substrate.

[0010] In some embodiments, the cross-sections of both the first conductive portion and the second conductive portion are larger than the cross-section of the heating portion.

[0011] In some embodiments, the cross-sections of the first conductive part, the second conductive part, and the heating part are all circular; the cross-sectional diameter of the first conductive part is 0.35mm-0.50mm; and / or, the cross-sectional diameter of the second conductive part is 0.35mm-0.50mm; and / or, the cross-sectional diameter of the heating part is 0.10mm-0.15mm.

[0012] In some embodiments, the substrate is a porous ceramic, and the liquid-conducting pathway includes micropores in the substrate.

[0013] In some embodiments, the first sub-part and the second sub-part are an integral structure.

[0014] In some embodiments, the first sub-part and the second sub-part are separate structures.

[0015] The atomizer according to the embodiments of this application includes the heating element described in any of the above embodiments.

[0016] The aerosol generating device according to the embodiments of this application includes a power supply and the atomizer described in the above embodiments, wherein the power supply is electrically connected to the atomizer.

[0017] In the heating element, atomizer, and aerosol generating device of this application, both the first conductive part and the second conductive part are electrically connected to the heating element and pass through the first end of the substrate. The second conductive part includes a first sub-part and a second sub-part. One end of the first sub-part is connected to one end of both the heating element and the second sub-part. The other end of the first sub-part passes through the first end of the substrate, and the other end of the second sub-part extends toward the second end of the substrate or the side wall of the substrate. Therefore, compared with related technologies, the heating element in this application can be supported and fixed by the user through the first conductive part, the first sub-part, and the second sub-part before molding. This ensures the stability of the heating element structure before molding, reduces the possibility of changes in the heating element after molding, and improves product consistency.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0020] Figure 1 is a schematic diagram of the structure of an aerosol generating apparatus according to certain embodiments of this application;

[0021] Figure 2 is a three-dimensional structural diagram of the heating element in the aerosol generating device shown in Figure 1;

[0022] Figure 3 is a cross-sectional schematic diagram of the heating element shown in Figure 2;

[0023] Figure 4 is a three-dimensional structural diagram of the heating element in the heating body shown in Figure 2;

[0024] Figure 5 is a three-dimensional structural diagram of the second conductive part of the heating element in the heating element shown in Figure 2 when it is not cut off.

[0025] Figure 6 is a cross-sectional schematic diagram of the heating element shown in Figure 5. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] An aerosol generating device is a small device that uses heating technology to act on an aerosol generating matrix and generate aerosols. It mainly includes two types of devices: those for atomizing solid matrices and those for atomizing liquid matrices. In related technologies, the atomizer in an aerosol generating device for a liquid matrix includes a heating element, which comprises a substrate and a heating element. The heating element heats and atomizes the aerosol generating matrix in the substrate to generate aerosols. The heating element is disposed inside the substrate, which includes a first end and a second end. The heating element includes a heating section, which also includes a first end and a second end, with the first end of the heating section being closer to the first end of the substrate than the second end. Generally, the two leads connecting to the first and second ends of the heating section are both led out from the same end of the substrate, for example, both from the first end. However, this arrangement results in a long lead distance for the leads connected to the second end of the heating section, leading to unstable structural support of the heating element before molding, which in turn makes the molded heating element prone to changes and results in poor product consistency. To solve this problem, please refer to Figures 1 and 2, or Figures 5 and 6. This application provides a heating element 10, an atomizer 100, and an aerosol generating device 1000.

[0033] Referring to Figure 1, the aerosol generating apparatus 1000 provided in this embodiment includes a power supply 200 and an atomizer 100, with the power supply 200 and the atomizer 100 electrically connected. Specifically, when electrical energy from the power supply 200 is transmitted to the atomizer 100, the atomizer 100 can heat and atomize the aerosol generating matrix to generate aerosols.

[0034] It should be noted that the aerosol generating apparatus 1000 is a structure capable of generating aerosols by heating an aerosol generating matrix. The aerosol generating matrix is ​​a processed product that, when heated, can generate aerosols. The aerosol generating matrix can be liquid, fully solid, or semi-solid. For example, when the aerosol generating matrix is ​​fully solid, it can be in the form of sheets or columns. The aerosol generating matrix can be prepared using processes such as rolling, slurry preparation, die casting, or extrusion. The aerosol can be visible or invisible and may include vapor (e.g., fine particulate matter in a gaseous state, which is typically liquid or solid at room temperature) as well as liquid droplets of gas and condensed vapor.

[0035] Since the aerosol generating device 1000 in this embodiment includes an atomizer 100, it is understood that the aerosol generating device 1000 has at least the same beneficial effects as the atomizer 100. Therefore, for the beneficial effects of the aerosol generating device 1000, please refer to the beneficial effects of the atomizer 100 described below.

[0036] Please refer to Figures 1 and 2. The atomizer 100 provided in this embodiment includes a heating element 10. Since the atomizer 100 in this embodiment includes a heating element 10, it is understood that the atomizer 100 includes at least the same beneficial effects as the heating element 10. Therefore, for the beneficial effects of the atomizer 100, please refer to the beneficial effects of the heating element 10 described below.

[0037] Please refer to Figures 2 to 5. The heating element 10 provided in this embodiment includes a substrate 11 and a heating element 13. The substrate 11 includes a first end 111 and a second end 113, a sidewall connecting the first end 111 and the second end 113, and an atomization passage 115 penetrating the first end 111 and the second end 113. The substrate 11 also includes a liquid guiding passage 117, which communicates with the atomization passage 115 and is used to allow the aerosol generation matrix to flow. The heating element 13 is embedded in the substrate 11 and includes a heating part 131, a first conductive part 133, and a second conductive part 135. The heating part 131 surrounds the atomization passage 115 and is used to generate heat when energized to heat the aerosol generation matrix. The first conductive part 133 and the second conductive part 135 are both electrically connected to the heating part 131 and pass through the first end 111 of the substrate. The second conductive part 135 includes a first sub-part 1355 and a second sub-part 1357. One end of the first sub-part 1355 is connected to one end of both the heating part 13 and the second sub-part 1357. The other end of the first sub-part 1355 passes through the first end 111 of the base 11. The other end of the second sub-part 1357 extends toward the second end 113 of the base 11 or the side wall of the base 11.

[0038] The substrate 11 is the structure in the heating element 10 used to mount the heating element 13 and other components. The material of the substrate 11 includes, but is not limited to, glass, ceramic, and metal. The outer contour shape of the substrate 11 includes, but is not limited to, cuboid, cube, and cylinder. It is understood that the substrate 11 can be manufactured using molding methods such as casting, dry pressing, and injection molding. The outer contour shape of the substrate 11 may include, but is not limited to, cube, cuboid, triangular prism, hexagonal prism, and cylinder. In this embodiment, a cylindrical outer contour shape of the substrate 11 is used as an example for explanation.

[0039] The cross-sectional shapes of the atomization passage 115 and the liquid guiding passage 117 can be regular or irregular shapes such as square, circle, and triangle, and are not limited here. The liquid guiding passage 117 allows the aerosol generating matrix to flow inside the substrate 11 and to the area that can be heated by the heating element 10, thereby heating the aerosol generating matrix to generate aerosols, and the generated aerosols can be discharged from the atomization passage 115 to the outside of the substrate 11.

[0040] In some embodiments, the substrate 11 is a porous ceramic, and the liquid-conducting passage 117 includes micropores in the substrate 11. The porous ceramic is typically prepared by mixing a ceramic slurry with a pore-forming agent and then sintering it, resulting in a large number of micropores within the sintered ceramic body. In some embodiments of this application, the micropores serve as the liquid-conducting passage 117 for the aerosol-generating matrix within the substrate 11. Multiple micropores are interconnected, thereby storing and conducting the aerosol-generating matrix to a certain extent, thus ensuring the normal operation of the heating element 10. It should be noted that in some embodiments, the liquid-conducting passage 117 can also be other artificially created channels. For example, the user can use laser drilling or mechanical drilling to punch holes in the substrate 11 to form through holes, which can serve as the liquid-conducting passage 117 for the aerosol-generating matrix within the substrate 11.

[0041] The heating element 13 is a structure in the heating body 10 used to heat the aerosol generation matrix. The heating element 13 includes, but is not limited to, heating circuits, heating films, heating sheets, heating wires, and heating meshes. The heating element 13 can be made of at least one of the following materials with appropriate impedance: metal materials, metal alloys, graphite, carbon, conductive ceramics, tin-antimony oxide, other ceramic materials, and composite materials of metal materials. Suitable metal or alloy materials include at least one of nickel, cobalt, zirconium, titanium, nickel alloys, cobalt alloys, zirconium alloys, titanium alloys, nickel-chromium alloys, nickel-iron alloys, iron-chromium alloys, iron-chromium-aluminum alloys, titanium alloys, iron-manganese-aluminum based alloys, or stainless steel. For example, the first conductive part 133 and the second conductive part 135 can both be made of nickel; the heating part 131 can be made of stainless steel or a nickel-chromium alloy. In this embodiment, only the heating element 13 being a heating wire is described as an example.

[0042] The heating element 13 is embedded in the base 11. On the one hand, compared with the heating element 13 being located on the outer side of the side wall of the base 11, the possibility of the heating element 13 interfering with the external structure and being damaged can be reduced, the service life of the heating element 13 can be extended, and the stability and reliability of the heating element 10 can be guaranteed. On the other hand, the space occupied by the heating element 13 can be reduced, which is conducive to the miniaturization of the heating element 10.

[0043] In some embodiments, the heating element 13 may be completely embedded in the substrate 11, that is, the heating part 131, the first conductive part 133 and the second conductive part 135 are all disposed in the substrate 11, and one end of the first conductive part 133 and the second conductive part 135 extends out of the substrate 11 from the first end 111 of the substrate and is electrically connected to the power supply 200 (shown in FIG1).

[0044] In other embodiments, a portion of the heating element 13 is embedded in the substrate 11. For example, a portion of the heating element 131 is embedded in the substrate 11 and exposed in the atomization passage 115, the first conductive part 133 and the second conductive part 135 are completely embedded in the substrate 11, and one end of the first conductive part 133 and the second conductive part 135 extends out of the substrate 11 from the first end 111 of the substrate and is electrically connected to the power supply 200.

[0045] Specifically, in some embodiments, when the first conductive part 133 and the second conductive part 135 are electrically connected to the power supply 200, the current from the power supply 200 can be conducted to the heating part 131, causing the heating part 131 to generate heat and heat the aerosol generating matrix in the substrate 11, thereby generating aerosols from the aerosol generating matrix. It should be noted that in some embodiments, the heating part 131 is spiral-shaped. For example, a user can wind the heating wire into a spiral shape using a spring winding machine to form the heating part 131.

[0046] In related technologies, the heating element in the heating body has a nautilus structure, that is, the first end of the first conductive part passes through the first end of the base, and the second end of the first conductive part is electrically connected to the first end of the heating part; the first end of the second conductive part passes through the first end of the base, and the second end of the second conductive part is electrically connected to the second end of the heating part. In this case, during the preparation of the heating body, only the first end of the second conductive part can be fixed, while the second end of the second conductive part cannot be fixed in the cavity of the mold. Furthermore, since the lead-out distance of the second conductive part is relatively long, the second conductive part is prone to movement when impacted by the base slurry, which leads to unstable structural support of the heating body, changes in the shape of the heating part, and consequently changes in the prepared heating body, affecting the consistency of the heating body.

[0047] In some embodiments of this application, the other end of the second sub-part 1357 extends toward the second end 113 of the base 11 or the side wall of the base 11. Thus, during the preparation of the heating element 10, the second sub-part 1357 can be fixed in the cavity of the mold. At this time, both the first sub-part 1355 and the second sub-part 1357 can be fixed in the cavity of the mold, thereby reducing the possibility of the second conductive part 135 shifting when impacted by the slurry, ensuring that the structure of the heating element 10 is stable before molding, and that the shape of the heating part 131 does not change, thereby improving the consistency of the heating element 10.

[0048] It is understood that, referring to Figures 2 and 3, in some embodiments, the other end of the second sub-part 1357 may extend toward the second end 113 of the base 11 and be flush with the second end 113 of the base. Referring to Figures 5 and 6, in other embodiments, the other end of the second sub-part 1357 may extend toward the second end 113 of the base 11 and protrude from the second end 113 of the base 11 to the outside of the base 11. In still other embodiments, the other end of the second sub-part 1357 may extend toward the sidewall of the base 11 and protrude from the sidewall of the base 11 to the outside of the base 11.

[0049] In the heating element 10 of this application embodiment, the first conductive part 133 and the second conductive part 135 are both electrically connected to the heating part 131 and pass through the first end 111 of the substrate. The second conductive part 135 includes a first sub-part 1355 and a second sub-part 1357. One end of the first sub-part 1355 is connected to one end of both the heating part 131 and the second sub-part 1357. The other end of the first sub-part 1355 passes through the first end 111 of the substrate 11. The other end of the second sub-part 1357 extends toward the second end 113 of the substrate 11 or the side wall of the substrate 11. Therefore, compared with the related technology, the heating element 10 of this application can be supported and fixed by the user through the first conductive part 133, the first sub-part 1355 and the second sub-part 1357 before molding, thereby ensuring the stability of the heating element 10 structure before molding, reducing the possibility of changes in the heating element 10 after molding and improving product consistency.

[0050] In addition, compared to the other end of the second sub-part 1357 extending toward the side wall of the base 11 and protruding through the side wall of the base 11, the other end of the second sub-part 1357 extending toward the second end 113 of the base 11 and protruding through the second end 113 of the base 11 allows the user to wrap cotton on the outside of the side wall of the base 11 without having to go around the second sub-part 1357. That is, the second sub-part 1357 will not affect the wrapping, thereby simplifying the wrapping process and improving product consistency.

[0051] In addition, the fact that the first conductive part 133 and the second conductive part 135 both pass through the first end 111 of the substrate can facilitate the electrical connection between the heating element 13 and the power supply 200 (shown in FIG1), reduce the complexity of the wiring, prevent the leads (including the first conductive part 133 and the second conductive part 135) from being too long or bent too much, thus generating additional resistance and improving the heating performance of the heating element 10.

[0052] The heating element 10 will be further explained below with reference to the accompanying drawings.

[0053] Please refer to Figures 2 and 3. In some embodiments, the heating element 131 is embedded in the substrate 11 and spaced apart from both the first end 111 and the second end 113 of the substrate. That is, in the direction from the first end 111 to the second end 113 of the substrate, the heating element 131 is disposed in the middle region of the substrate 11, and there is a void area between the heating element 131 and both the first end 111 and the second end 113 of the substrate. Thus, when both the first conductive part 133 and the second conductive part 135 are electrically connected to the heating element 131, portions of the first conductive part 133 and the second conductive part 135 are located within the substrate 11, that is, portions of the first conductive part 133 and the second conductive part 135 are located within the void area. This prevents the lead wire (including the first conductive part 133 and the second conductive part 135) from shaking, which could cause the connection between the lead wire and the heating element 131 to break, thereby improving the stability and reliability of the heating element 10.

[0054] Referring to Figure 4, in some embodiments, the heating element 131 includes a first end 1311 and a second end 1313, with the first end 1311 of the heating element being closer to the first end 111 of the substrate than the second end 1313. The first end 1331 of the first conductive element passes through the first end 111 of the substrate, and the second end 1333 of the first conductive element is electrically connected to the first end 1311 of the heating element. The first end 1351 of the second conductive element passes through the first end 111 of the substrate, and the second end 1353 of the second conductive element is further away from the first end 111 of the substrate than the heating element 131. It should be noted that in some embodiments, the first end 1311 of the heating element may be spaced apart from the first end 111 of the substrate, and the second end 1313 of the heating element may be spaced apart from the second end 113 of the substrate.

[0055] Specifically, in some embodiments, the first end 1311 of the heating element is electrically connected to the second end 1333 of the first conductive element, and the second end 1313 of the heating element is electrically connected to any position between the first end 1351 and the second end 1353 of the second conductive element. The first end 1331 of the first conductive element extends from the first end 111 of the substrate to the outside of the substrate 11 and is electrically connected to the power supply 200 (shown in FIG. 1). The first end 1351 of the second conductive element extends from the first end 111 of the substrate to the outside of the substrate 11 and is electrically connected to the power supply 200. The second end 1353 of the second conductive element is further away from the first end 111 of the substrate than the second end 1313 of the heating element.

[0056] It is understood that, referring to Figures 2 and 3, in some embodiments, the second end 1353 of the second conductive portion is flush with the second end 113 of the substrate. Referring to Figures 5 and 6, in other embodiments, the second end 1353 of the second conductive portion passes through the second end 113 of the substrate and extends outside the substrate 11. For ease of explanation, the embodiments described below will only be illustrated by the example of the second end 1353 of the second conductive portion being flush with the second end 113 of the substrate.

[0057] In some embodiments, the preparation steps of the heating element 10 may include: first, welding the heating part 131 and the first conductive part 133, and welding the heating part 131 and the second conductive part 135 to form the heating element 13; then, fixing the heating element 13 in the cavity of the mold; subsequently, adding a matrix slurry to the cavity in which the heating element 13 is placed, so that the matrix slurry and the heating element 13 together form an injection molded body; then, degreasing and sintering the injection molded body to form the heating element to be processed (as shown in Figures 5 and 6); finally, cutting off the second conductive part 135 that extends beyond the second end 113 of the matrix so that the second end 1353 of the second conductive part is flush with the second end 113 of the matrix (as shown in Figures 2 and 3), thus completing the preparation of the heating element 10.

[0058] It is understood that the preparation steps of the heating element 10 in the above embodiments are merely illustrative examples. In other embodiments, the preparation steps of the heating element 10 may be other existing methods, which will not be described one by one here.

[0059] In some embodiments of this application, the second end 1353 of the second conductive part is further away from the first end 111 of the substrate than the heating part 131. Thus, during the preparation of the heating element 10, the portion of the second conductive part 135 near the second end 1353 can be fixed in the cavity of the mold. At this time, both the portion of the second conductive part 135 near the second end 1353 and the portion of the second conductive part 135 near the first end 1351 can be fixed in the cavity of the mold, thereby reducing the possibility of the second conductive part 135 shifting when impacted by the slurry, and the shape of the heating part 131 will not change, thereby improving the consistency of the heating element 10.

[0060] Please refer to Figures 3 and 4. In some embodiments, the first sub-part 1355 and the second sub-part 1357 are an integral structure, that is, the first sub-part 1355 and the second sub-part 1357 can be formed as a single integral structure by integral molding. In this embodiment, the heating element 13 can be prepared by: welding the first end 1311 of the heating part to the second end 1333 of the first conductive part; welding the second end 1313 of the heating part to any position between the first end 1351 and the second end 1353 of the second conductive part, thereby forming the heating element 13.

[0061] In other embodiments, the first sub-part 1355 and the second sub-part 1357 are separate structures, that is, the first sub-part 1355 and the second sub-part 1357 are two different structures. In this embodiment, the heating element 13 can be prepared by: welding the first end 1311 of the heating part to the second end 1333 of the first conductive part; welding the second end 1313 of the heating part to one end of the first sub-part 1355; and welding the second sub-part 1357 to the end of the first sub-part 1355 that is connected to the second end 1313 of the heating part, thereby forming the heating element 13.

[0062] Referring to Figure 3, in some embodiments, the cross-sections of the first conductive part 133 and the second conductive part 135 are both larger than the cross-section of the heating part 131. This ensures the mechanical strength of the first conductive part 133 and the second conductive part 135, enabling them to provide stable support for the heating part 131 and preventing morphological changes in the heating part 131. For example, during the fabrication of the heating element 10, the first conductive part 133 and the second conductive part 135 provide stable support to prevent morphological changes in the heating part 131 that could affect the consistency of the heating element 10. Furthermore, it reduces the resistance of the first conductive part 133 and the second conductive part 135, lowering losses during current transmission and improving the heating efficiency of the heating element 13.

[0063] Furthermore, in some embodiments, the cross-sections of the first conductive part 133, the second conductive part 135, and the heating part 131 are all circular. The cross-sectional diameter of the first conductive part 133 is 0.35mm-0.50mm. Specifically, in some embodiments, the cross-sectional diameter of the first conductive part 133 is any one of 0.35mm, 0.37mm, 0.39mm, 0.40mm, 0.41mm, 0.42mm, 0.44mm, 0.46mm, 0.48mm, and 0.50mm, or any value between any two of these values.

[0064] If the cross-sectional diameter of the first conductive part 133 is less than 0.35 mm, its mechanical strength will be low, making it unable to provide stable support for the heating part 131, and the heating part 131 will be prone to shape changes. If the cross-sectional diameter of the first conductive part 133 is greater than 0.50 mm, its size will be large, which is not conducive to the miniaturization of the heating element 13. In this embodiment, the cross-sectional diameter of the first conductive part 133 is 0.35 mm to 0.50 mm. This ensures the mechanical strength of the first conductive part 133, enabling it to provide stable support for the heating part 131 and reducing the possibility of shape changes in the heating part 131. Furthermore, it prevents the first conductive part 133 from being too large, which is beneficial for the miniaturization of the heating element 13.

[0065] In some embodiments, the cross-sectional diameter of the second conductive portion 135 is 0.35mm-0.50mm. Specifically, in some embodiments, the cross-sectional diameter of the second conductive portion 135 is any one of 0.35mm, 0.37mm, 0.39mm, 0.40mm, 0.41mm, 0.42mm, 0.44mm, 0.46mm, 0.48mm, and 0.50mm, or any value between any two of these values.

[0066] If the cross-sectional diameter of the second conductive part 135 is less than 0.35 mm, its mechanical strength will be low, making it unable to provide stable support for the heating part 131, and the heating part 131 will be prone to shape changes. If the cross-sectional diameter of the second conductive part 135 is greater than 0.50 mm, its size will be large, which is not conducive to the miniaturization of the heating element 13. In this embodiment, the cross-sectional diameter of the second conductive part 135 is 0.35 mm to 0.50 mm. This ensures the mechanical strength of the second conductive part 135, enabling it to provide stable support for the heating part 131 and reducing the possibility of shape changes in the heating part 131. Furthermore, it prevents the second conductive part 135 from being too large, which is beneficial for the miniaturization of the heating element 13.

[0067] In some embodiments, the cross-sectional diameter of the heating element 131 is 0.10 mm to 0.15 mm. Specifically, in some embodiments, the cross-sectional diameter of the second conductive element 135 is any one of 0.10 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, and 0.15 mm, or any value between any two of these values.

[0068] If the cross-sectional diameter of the heating element 131 is less than 0.10 mm, its strength is low, making it prone to deformation during the fabrication of the heating element 10 and affecting its consistency. If the cross-sectional diameter of the heating element 131 is greater than 0.15 mm, its resistance is low, requiring a longer time to reach the temperature needed to generate the atomized aerosol matrix during operation, resulting in poor heating efficiency. In this embodiment, the cross-sectional diameter of the heating element 131 is 0.10 mm to 0.15 mm. This ensures the strength of the heating element 131, reduces the possibility of deformation during fabrication, and improves the consistency of the heating element 10. Furthermore, it enables the heating element 131 to reach the temperature required to generate the atomized aerosol matrix in a shorter time, improving the heating efficiency and enhancing the user experience.

[0069] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. Furthermore, other implementation methods can be derived from the above embodiments, allowing for structural and logical substitutions and changes without departing from the scope of this disclosure.

[0070] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A heating element, wherein, include: The matrix includes a first end, a second end, a sidewall connecting the first end and the second end, and an atomization passage penetrating the first end and the second end. The matrix also includes a liquid guiding passage communicating with the atomization passage and used for the flow of the aerosol generation matrix. A heating element is embedded in the substrate and includes a heating part, a first conductive part, and a second conductive part. The heating part surrounds the atomization channel and is used to generate heat when energized to heat the aerosol generation matrix. The first conductive part and the second conductive part are both electrically connected to the heating part and pass through a first end of the substrate. The second conductive part includes a first sub-part and a second sub-part. One end of the first sub-part is connected to one end of both the heating part and the second sub-part. The other end of the first sub-part passes through the first end of the substrate, and the other end of the second sub-part extends toward the second end of the substrate or the sidewall of the substrate.

2. The heating element according to claim 1, wherein, The heating element is embedded in the substrate and is spaced apart from both the first end and the second end of the substrate.

3. The heating element according to claim 1, wherein, The heating element includes a first end and a second end opposite to each other, wherein the first end of the heating element is closer to the first end of the substrate than the second end of the heating element. The first end of the first conductive part passes through the first end of the substrate, and the second end of the first conductive part is electrically connected to the first end of the heating part; the first end of the second conductive part passes through the first end of the substrate, and the second end of the second conductive part is further away from the first end of the substrate than the heating part.

4. The heating element according to claim 3, wherein, The second end of the second conductive part is flush with the second end of the substrate.

5. The heating element according to claim 1, wherein, The cross-sections of both the first conductive part and the second conductive part are larger than the cross-section of the heating part.

6. The heating element according to claim 5, wherein, The cross-sections of the first conductive part, the second conductive part, and the heating part are all circular. The cross-sectional diameter of the first conductive part is 0.35mm-0.50mm; and / or, The cross-sectional diameter of the second conductive part is 0.35mm-0.50mm; and / or, The cross-sectional diameter of the heating element is 0.10mm-0.15mm.

7. The heating element according to claim 1, wherein, The substrate is a porous ceramic, and the liquid-conducting pathway includes micropores in the substrate.

8. The heating element according to any one of claims 1-7, wherein, The first sub-part and the second sub-part are a single integrated structure; or, The first sub-part and the second sub-part are separate structures.

9. An atomizer, wherein, include: The heating element according to any one of claims 1-8.

10. An aerosol generating apparatus, wherein, include: The atomizer as described in claim 9; and A power source, which is electrically connected to the atomizer.

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