Heating element, nebulizer, and aerosol-generating device

Abstract

The utility model discloses a heating body, an atomizer and an aerosol generating device. The heating body comprises a base body and a heating piece. The base body comprises a first end and a second end which are opposite to each other, a side wall for connecting the first end and the second end, and an atomization passage penetrating through the first end and the second end, and the base body further comprises a liquid guide passage which is communicated with the atomization passage and is used for circulation of an aerosol generating substrate. The heating element is embedded in the base body and comprises a heating part, a first conductive part and a second conductive part, the heating part surrounds the atomization path and is used for heating the aerosol generation substrate when being electrified, and the first conductive part and the second conductive part are electrically connected with the heating part and penetrate through the first end of the base body; the second conductive part comprises a first sub-part and a second sub-part, one end of the first sub-part is connected with one end of the heating part and one end of the second sub-part, the other end of the first sub-part penetrates through the first end of the base body, and the other end of the second sub-part extends towards the second end of the base body or the side wall of the base body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic atomization, and more particularly, to a heating element, an atomizer and an aerosol generating device. BACKGROUND

[0002] An aerosol generating device is a small device that can use a heating technique to act on an aerosol generating substrate and generate an aerosol. It mainly includes two types of devices for atomizing solid and liquid substrates. In the related art, the atomizer in the aerosol generating device for the liquid substrate includes a heating element, the heating element includes a base and a heating piece, and the heating piece can heat and atomize the aerosol generating substrate in the base to generate an aerosol. Among them, the heating piece is arranged inside the base, the base includes opposite first and second ends, the heating piece includes a heating portion, the heating portion includes opposite first and second ends, and the first end of the heating portion is closer to the first end of the base than the second end of the heating portion. Generally, the two lead wires connected to the first end and the second end of the heating portion are led out from the same end of the base, for example, from the first end of the base. However, such arrangement can cause the lead wire connected to the second end of the heating portion to have a long lead-out distance, and the structure of the heating element before molding is unstable, which can further cause the heating element after molding to change, and the product consistency is poor. CONTENT OF THE UTILITY MODEL

[0003] The embodiments of the present application provide a heating element, an atomizer and an aerosol generating device.

[0004] The heating element of the embodiments of the present application includes a base and a heating piece. The base includes opposite first and second ends, a side wall connecting the first and second ends, and an atomization passage penetrating the first and second ends, and further includes a liquid guide passage in communication with the atomization passage and for the flow of an aerosol generating substrate. The heating piece is embedded in the base and includes a heating portion, a first conductive portion and a second conductive portion. The heating portion surrounds the atomization passage and is used to heat the aerosol generating substrate when powered on. The first and second conductive portions are both electrically connected to the heating portion and penetrate the first end of the base. The second conductive portion includes a first sub-portion and a second sub-portion. One end of the first sub-portion is connected to the heating portion and one end of the second sub-portion. The other end of the first sub-portion penetrates the first end of the base, and the other end of the second sub-portion extends towards the second end of the base or the side wall of the base.

[0005] In some embodiments, the heating portion is embedded in the base and spaced apart from the first end of the base and the second end of the base.

[0006] In some embodiments, the heating portion includes opposite first and second ends, the first end of the heating portion is closer to the first end of the base than the second end of the heating portion. The first end of the first conductive portion penetrates the first end of the base, and the second end of the first conductive portion is electrically connected to the first end of the heating portion. The first end of the second conductive portion penetrates the first end of the base, and the second end of the second conductive portion is farther away from the first end of the base than the heating portion.

[0007] In some embodiments, the second end of the second conductive portion is flush with the second end of the base.

[0008] In some embodiments, the cross sections of the first and second conductive portions are larger than the cross section of the heating portion.

[0009] In some embodiments, the cross sections of the first and second conductive portions and the heating portion are circular. The cross section of the first conductive portion has a diameter of 0.35-0.50 mm. The cross section of the second conductive portion has a diameter of 0.35-0.50 mm. The cross section of the heating portion has a diameter of 0.10-0.15 mm.

[0010] In some embodiments, the base is porous ceramic, and the liquid conducting passage includes micropores in the base.

[0011] In some embodiments, the first and second sub-portions are integrated structures.

[0012] In some embodiments, the first and second sub-portions are separate structures.

[0013] The atomizer of the embodiments of the present application includes the heating body of any of the above embodiments.

[0014] The aerosol generating device of the embodiments of the present application includes a power supply and the atomizer of the above embodiments, and the power supply is electrically connected to the atomizer.

[0015] In the heating element, the atomizer and the aerosol generating device of the embodiments of the present application, the first conductive part and the second conductive part are both electrically connected with the heating part and pass through the first end of the base, and the second conductive part includes a first sub-part and a second sub-part, one end of the first sub-part is connected with the heating part and one end of the second sub-part, the other end of the first sub-part passes through the first end of the base, and the other end of the second sub-part extends towards the second end of the base or the side wall of the base. Therefore, compared with the related art, the heating element in the present application can be supported and fixed by the first conductive part, the first sub-part and the second sub-part before forming, so that the stability of the structure of the heating element before forming can be ensured, the possibility of change of the heating element after forming can be reduced, and the product consistency can be improved.

[0016] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0018] Figure 1 is a structural schematic diagram of an aerosol generating device according to some embodiments of the present application;

[0019] Figure 2 is a perspective structural schematic diagram of a heating element in the aerosol generating device shown in Figure 1

[0020] Figure 3 is a cross-sectional schematic diagram of the heating element shown in Figure 2

[0021] Figure 4 is a perspective structural schematic diagram of a heating element in the aerosol generating device shown in Figure 2

[0022] Figure 5 is a perspective structural schematic diagram of a heating element in the aerosol generating device shown in Figure 2

[0023] Figure 6 is a cross-sectional schematic diagram of the heating element shown in Figure 5

[0024] Main element symbol explanation:

[0025] 1000 aerosol generating device;

[0026] 100 atomizer; 200 power supply;

[0027] 10 heating element; ​​​​​

[0028] 11 base; 111 first end; 113 second end; side wall 114, 115 atomizing passage; 117 liquid guiding passage;

[0029] 13 heating element; 131 heating portion; 1311 first end; 1313 second end; 133 first conductive portion; 1331 first end; 1333 second end; 135 second conductive portion; 1351 first end; 1353 second end; 1355 first sub-portion; 1357 second sub-portion. DETAILED DESCRIPTION

[0030] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners according to other embodiments, and those skilled in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0033] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In this application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature "under", "below" and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0036] The aerosol-generating device is a small device that can act on an aerosol-generating substrate using a heating technology and generate an aerosol, mainly including two types of devices for atomizing solid and liquid substrates. In the related art, the atomizer in the aerosol-generating device for the liquid substrate includes a heating body, the heating body includes a base and a heating piece, and the heating piece can heat and atomize the aerosol-generating substrate in the base to generate an aerosol. Among them, the heating piece is arranged inside the base, the base includes opposite first and second ends, the heating piece includes a heating part, the heating part includes opposite first and second ends, and the first end of the heating part is closer to the first end of the base than the second end of the heating part. Generally, the two lead wires connected with the first end and the second end of the heating part are led out from the same end of the base, for example, both are led out from the first end of the base. However, such arrangement will cause the lead wire connected with the second end of the heating part to have a long lead-out distance, and the structure of the heating body before molding is unstable, which will further easily cause the change of the heating body after molding, and the product consistency is poor. To solve this problem, please refer to Figure 1 and Figure 2 , or refer to Figure 5 and Figure 6 , the present application provides a heating body 10, an atomizer 100 and an aerosol-generating device 1000.

[0037] Please refer to Figure 1The aerosol-generating device 1000 provided by the embodiments of the present application includes a power supply 200 and an atomizer 100, and the power supply 200 is electrically connected to the atomizer 100. Specifically, in the case where the power supply 200 transmits electric energy to the atomizer 100, the atomizer 100 can heat and atomize the aerosol-generating substrate to generate an aerosol.

[0038] It should be noted that the aerosol-generating device 1000 is a structure capable of generating an aerosol by heating an aerosol-generating substrate. The aerosol-generating substrate is a product that is processed and can generate an aerosol after being heated. The aerosol-generating substrate can be in a liquid state, or in a full solid state or a semi-solid state. For example, in the case where the aerosol-generating substrate is in a full solid state, the aerosol-generating substrate can be in a sheet shape or a column shape, etc. The aerosol-generating substrate can be prepared and formed by processes such as rolling, thick paste, die casting, and extrusion. The aerosol can be visible or invisible and can include vapor (e.g., fine particulate matter in a gaseous state, which is usually a liquid or a solid at room temperature), as well as gas and liquid droplets of condensed vapor.

[0039] In the embodiments of the present application, the aerosol-generating device 1000 includes the atomizer 100, and it can be understood that the aerosol-generating device 1000 at least includes the same beneficial effects as the atomizer 100. Therefore, the beneficial effects of the aerosol-generating device 1000 are described below in the beneficial effects of the atomizer 100.

[0040] Please refer to Figure 1 and Figure 2 In the embodiments of the present application, the atomizer 100 includes the heating element 10, and it can be understood that the atomizer 100 at least includes the same beneficial effects as the heating element 10. Therefore, the beneficial effects of the atomizer 100 are described below in the beneficial effects of the heating element 10.

[0041] Please refer to Figures 2 to 5The heating body 10 provided by the embodiment of the present application comprises a base body 11 and a heating element 13. The base body 11 comprises a first end 111, a second end 113, a side wall 114 connecting the first end 111 and the second end 113, an atomization passage 115 penetrating through the first end 111 and the second end 113, and a liquid guide passage 117. The liquid guide passage 117 is in communication with the atomization passage 115 and is used for the flow of the aerosol generating substrate. The heating element 13 is embedded in the base body 11 and comprises a heating portion 131, a first conductive portion 133 and a second conductive portion 135. The heating portion 131 surrounds the atomization passage 115 and is used for heating the aerosol generating substrate when powered on. The first conductive portion 133 and the second conductive portion 135 are both in electrical connection with the heating portion 131 and penetrate through the first end 111 of the base body. The second conductive portion 135 comprises a first sub-portion 1355 and a second sub-portion 1357. One end of the first sub-portion 1355 is connected with the heating portion 131 and one end of the second sub-portion 1357. The other end of the first sub-portion 1355 penetrates through the first end 111 of the base body 11. The other end of the second sub-portion 1357 extends towards the second end 113 of the base body 11 or the side wall 114 of the base body 11.

[0042] The base body 11 is a structure for loading the heating element 13 and other elements in the heating body 10. The material of the base body 11 includes but is not limited to glass, ceramic, metal and the like. The outer contour shape of the base body 11 includes but is not limited to a cuboid, a square, a cylinder and the like. It can be understood that the base body 11 can be processed and manufactured by flow casting, dry pressing, injection molding and the like. The outer contour shape of the base body 11 can include but is not limited to a square, a cuboid, a triangular prism, a hexagonal prism and a cylinder. The outer contour shape of the base body 11 is taken as a cylinder in the embodiment of the present application.

[0043] The cross-sectional shape of the atomization passage 115 and the liquid guide passage 117 can be a regular shape such as a square, a circle, a triangle or an irregular shape, which is not limited herein. The liquid guide passage 117 can be used for the flow of the aerosol generating substrate in the base body 11 and flow to the area that can be heated by the heating body 10 through the liquid guide passage 117, so that the aerosol generating substrate is heated to generate aerosol, and the generated aerosol can be guided out of the base body 11 through the atomization passage 115.

[0044] In some embodiments, the base body 11 is a porous ceramic, and the liquid guiding passage 117 comprises micropores in the base body 11. In some embodiments, the porous ceramic is prepared by mixing a ceramic slurry with a pore-forming agent and then sintering, and the sintered ceramic body has a large number of micropores. In some embodiments of the present application, the micropores can serve as the liquid guiding passage 117 of the aerosol generating substrate in the base body 11, and the micropores are interconnected, thereby being capable of storing the aerosol generating substrate to some extent and conducting the aerosol generating substrate, thereby ensuring the normal operation of the heating element 10. It should be noted that, in some embodiments, the liquid guiding passage 117 can also be other artificially formed passages. For example, the user can punch holes on the base body 11 by means of laser drilling or mechanical drilling to form through holes, and the through holes can serve as the liquid guiding passage 117 of the aerosol generating substrate in the base body 11.

[0045] The heating element 13 is a structure for heating the aerosol generating substrate in the heating body 10. The heating element 13 includes, but is not limited to, a heating wire, a heating film, a heating sheet, a heating wire, and a heating net. In some embodiments, the heating element 13 can be made of at least one of a metal material, a metal alloy, graphite, carbon, a conductive ceramic, tin antimony oxide, other ceramic materials, a composite material of metal materials, and the like. In some embodiments, the suitable metal or alloy material includes at least one of nickel, cobalt, zirconium, titanium, a nickel alloy, a cobalt alloy, a zirconium alloy, a titanium alloy, a nickel-chromium alloy, a nickel-iron alloy, a ferrochrome alloy, a ferrochrome-aluminum alloy, a titanium alloy, an iron-manganese-aluminum-based alloy, or stainless steel. For example, the material of the first conductive part 133 and the second conductive part can be nickel, and the material of the heating part 131 can be stainless steel or a nickel-chromium alloy. In some embodiments, the heating element 13 is taken as a heating wire for example.

[0046] In some embodiments, the heating element 13 is embedded in the base body 11. In this way, on the one hand, compared with the case where the heating element 13 is arranged on the outside of the side wall of the base body 11, the possibility of interference and damage of the heating element 13 with the external structure can be reduced, the service life of the heating element 13 can be prolonged, and the stability and reliability of the heating body 10 can be ensured. On the other hand, the space occupied by the heating element 13 can be reduced, which is conducive to the miniaturization of the heating body 10.

[0047] In some embodiments, the heating element 13 can be completely embedded in the base body 11, i.e., the heating part 131, the first conductive part 133, and the second conductive part 135 are arranged in the base body 11, and one end of the first conductive part 133 and the second conductive part 135 protrudes from the first end 111 of the base body 11 and is electrically connected with the power supply 200. Figure 1

[0048] ​In some embodiments, the heating element 13 is partially embedded in the base 11. For example, the heating portion 131 is partially embedded in the base 11 and exposed in the atomization passage 115, and the first and second conductive portions 133 and 135 are completely embedded in the base 11, and one end of the first and second conductive portions 133 and 135 extends out of the base 11 from the first end 111 of the base and is electrically connected to the power supply 200.

[0049] Specifically, in some embodiments, when the first and second conductive portions 133 and 135 are electrically connected to the power supply 200, the current of the power supply 200 can be conducted to the heating portion 131 to generate heat and heat the aerosol generating substrate in the base 11, so that the aerosol generating substrate generates aerosol. It should be noted that, in some embodiments, the heating portion 131 is in a spiral shape. For example, the user can wind the heating wire into a spiral heating portion 131 by a spring winding machine.

[0050] In the related art, the heating element in the heating body is in a nautilus structure, that is, the first end of the first conductive portion penetrates the first end of the base, and the second end of the first conductive portion is electrically connected to the first end of the heating portion; the first end of the second conductive portion penetrates the first end of the base, and the second end of the second conductive portion is electrically connected to the second end of the heating portion. At this time, in the preparation process of the heating body, only the first end of the second conductive portion can be fixed, and the second end of the second conductive portion cannot be fixed in the cavity of the mold. In addition, since the lead-out distance of the second conductive portion is long, the second conductive portion is prone to shift when impacted by the base slurry, thereby causing the structure of the heating body to be unstable, causing the shape of the heating portion to change, and further causing the prepared heating body to change, thereby affecting the consistency of the heating body.

[0051] In some embodiments of the present application, the other end of the second sub-portion 1357 extends towards the second end 113 of the base 11 or the side wall 114 of the base 11. In this way, in the preparation process of the heating body 10, the second sub-portion 1357 can be fixed in the cavity of the mold. At this time, both the first sub-portion 1355 and the second sub-portion 1357 can be fixed in the cavity of the mold, thereby reducing the possibility of the second conductive portion 135 shifting when impacted by the slurry, ensuring that the structure of the heating body 10 is stable before forming, the shape of the heating portion 131 will not change, and further improving the consistency of the heating body 10.

[0052] It can be understood that, please refer to Figure 2 and Figure 3 In some embodiments, the other end of the second sub-portion 1357 can extend towards the second end 113 of the base 11 and be flush with the second end 113 of the base. Please refer to Figure 5 and Figure 6, in some other embodiments, the other end of the second sub - part 1357 may extend towards the second end 113 of the base body 11 and penetrate out of the base body 11 from the second end 113 of the base body 11. In still some other embodiments, the other end of the second sub - part 1357 may extend towards the side wall 114 of the base body 11 and penetrate out of the base body 11 from the side wall 114 of the base body 11.

[0053] In the heating element 10 of the embodiment of the present application, both the first conductive part 133 and the second conductive part 135 are electrically connected to the heating part 131 and penetrate through the first end 111 of the base body. And 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 both the heating part 131 and one end of the second sub - part 1357. The other end of the first sub - part 1355 penetrates through the first end 111 of the base body 11. The other end of the second sub - part 1357 extends towards the second end 113 or the side wall 114 of the base body 11. Thus, compared with the related art, before the heating element 10 is formed, the user can support and fix the structure of the heating element 10 through the first conductive part 133, the first sub - part 1355 and the second sub - part 1357, so as to ensure the stable structural support of the heating element 10 before forming, reduce the possibility of changes in the formed heating element 10, and improve the product consistency.

[0054] In addition, compared with the case where the other end of the second sub - part 1357 extends towards the side wall 114 of the base body 11 and penetrates through the side wall 114 of the base body 11 and extends out, when the other end of the second sub - part 1357 extends towards the second end 113 of the base body 11 and penetrates through the second end 113 of the base body 11 and extends out, it enables the user not to bypass the second sub - part 1357 when wrapping cotton on the outside of the side wall 114 of the base body 11. That is, the second sub - part 1357 will not affect the cotton wrapping, so as to simplify the cotton - wrapping process and improve the product consistency.

[0055] In addition, both the first conductive part 133 and the second conductive part 135 penetrating through the first end 111 of the base body can also facilitate the electrical connection between the heating element 13 and the power supply 200 ( Figure 1 as shown), reduce the complexity of wire routing, prevent the leads (including the first conductive part 133 and the second conductive part 135) from being too long or bent too much to generate additional resistance, and improve the heating performance of the heating element 10.

[0056] The following further describes the heating element 10 with reference to the drawings.

[0057] Please refer to Figure 2 and Figure 3In some embodiments, the heating portion 131 is embedded in the base body 11 and is spaced apart from the first end 111 of the base body and the second end 113 of the base body. That is, in the direction from the first end 111 of the base body to the second end 113 of the base body, the heating portion 131 is arranged in the middle region of the base body 11, and there is a vacant region between the heating portion 131 and the first end 111 of the base body and the second end 113 of the base body. Thus, when the first conductive portion 133 and the second conductive portion 135 are both electrically connected to the heating portion 131, part of the first conductive portion 133 and the second conductive portion 135 is located in the base body 11, i.e., part of the first conductive portion 133 and the second conductive portion 135 is located in the vacant region, so as to prevent the lead wire (including the first conductive portion 133 and the second conductive portion 135) from shaking and causing the connection between the lead wire and the heating portion 131 to be disconnected, thereby improving the stability and reliability of the heating body 10 in operation.

[0058] Please refer to Figure 4 In some embodiments, the heating portion 131 includes opposite first and second ends 1311 and 1313, and the first end 1311 of the heating portion is closer to the first end 111 of the base body than the second end 1313 of the heating portion. The first end 1331 of the first conductive portion penetrates the first end 111 of the base body, and the second end 1333 of the first conductive portion is electrically connected to the first end 1311 of the heating portion. The first end 1351 of the second conductive portion penetrates the first end 111 of the base body, and the second end 1353 of the second conductive portion is farther away from the first end 111 of the base body than the second end 1313 of the heating portion. It should be noted that in some embodiments, the first end 1311 of the heating portion can be spaced apart from the first end 111 of the base body, and the second end 1313 of the heating portion can be spaced apart from the second end 113 of the base body.

[0059] Specifically, in some embodiments, the first end 1311 of the heating portion is electrically connected to the second end 1333 of the first conductive portion, and the second end 1313 of the heating portion is electrically connected to any position between the first end 1351 of the second conductive portion and the second end 1353 of the second conductive portion. The first end 1331 of the first conductive portion extends out of the base body 11 from the first end 111 of the base body and is electrically connected to the power supply 200 (as shown), and the first end 1351 of the second conductive portion extends out of the base body 11 from the first end 111 of the base body and is electrically connected to the power supply 200. The second end 1353 of the second conductive portion is farther away from the first end 111 of the base body than the second end 1313 of the heating portion. Figure 1

[0060] It can be understood that please refer to Figure 2 and Figure 3 In some embodiments, the second end 1353 of the second conductive portion is flush with the second end 113 of the base body. Please refer to Figure 5 and Figure 6 ​In other embodiments, the second end 1353 of the second conductive part penetrates the second end 113 of the base and extends out of the base 11. For the sake of illustration, the following embodiments are described with the second end 1353 of the second conductive part flush with the second end 113 of the base.

[0061] In some embodiments, the preparation of the heat-generating body 10 can include the following steps: first, welding the heat-generating part 131 and the first conductive part 133, and welding the heat-generating part 131 and the second conductive part 135 to form the heat-generating member 13; then, fixing the heat-generating member 13 in the cavity of the mold; subsequently, adding the base slurry into the cavity in which the heat-generating member 13 is placed, so that the base slurry and the heat-generating member 13 jointly form the injection-molded body; then, debinding and sintering the injection-molded body to form the heat-generating body to be processed (as shown in Figure 5 Figure 6 Figure 2 Figure 3

[0062] It should be understood that the above-mentioned preparation steps of the heat-generating body 10 are only exemplary, and in other embodiments, the preparation steps of the heat-generating body 10 can also be other existing methods, which are not described one by one here.

[0063] In some embodiments of the present application, the second end 1353 of the second conductive part is farther away from the first end 111 of the base than the heat-generating part 131, so that during the preparation of the heat-generating body 10, the part of the second conductive part 135 close to the second end 1353 of the second conductive part can be fixed in the cavity of the mold, at this time, both the part of the second conductive part 135 close to the second end 1353 of the second conductive part and the part of the second conductive part 135 close to the first end 1351 of the second conductive part can be fixed in the cavity of the mold, thereby reducing the possibility of the second conductive part 135 moving when impacted by the slurry, the shape of the heat-generating part 131 does not change, and the consistency of the heat-generating body 10 can be improved.

[0064] Please refer to Figure 3 Figure 4 ​​​​​In some embodiments, the first sub-portion 1355 and the second sub-portion 1357 are an integral structure, i.e., the first sub-portion 1355 and the second sub-portion 1357 can be an integral structure formed by integral molding. In the present embodiment, the heating element 13 can be prepared by welding the first end 1311 of the heating portion to the second end 1333 of the first conductive portion, and welding the second end 1313 of the heating portion to any position between the first end 1351 of the second conductive portion and the second end 1353 of the second conductive portion, so as to prepare the heating element 13.

[0065] In other embodiments, the first sub-portion 1355 and the second sub-portion 1357 are a split structure, i.e., the first sub-portion 1355 and the second sub-portion 1357 are two different structures. In the present embodiment, the heating element 13 can be prepared by welding the first end 1311 of the heating portion to the second end 1333 of the first conductive portion, welding the second end 1313 of the heating portion to one end of the first sub-portion 1355, and welding the second sub-portion 1357 to one end of the first sub-portion 1355 connected to the second end 1313 of the heating portion, so as to prepare the heating element 13.

[0066] Please refer to Figure 3 In some embodiments, the cross sections of the first conductive portion 133 and the second conductive portion 135 are larger than the cross section of the heating portion 131. On the one hand, this can ensure the mechanical strength of the first conductive portion 133 and the second conductive portion 135, so that the first conductive portion 133 and the second conductive portion 135 can provide stable support for the heating portion 131 to prevent the heating portion 131 from changing in shape, for example, during the preparation of the heating body 10, the first conductive portion 133 and the second conductive portion 135 can provide stable support for the heating portion 131 to prevent the heating portion 131 from changing in shape and affecting the consistency of the heating body 10; on the other hand, this can reduce the resistance of the first conductive portion 133 and the second conductive portion 135, reduce the loss generated during current transmission, and improve the heating efficiency of the heating element 13.

[0067] Further, in some embodiments, the cross sections of the first conductive portion 133, the second conductive portion 135, and the heating portion 131 are circular. The cross section diameter of the first conductive portion 133 is 0.35mm-0.50mm. Specifically, in some embodiments, the cross section diameter of the first conductive portion 133 is any one value or any value between any two values of 0.35mm, 0.37mm, 0.39mm, 0.40mm, 0.41mm, 0.42mm, 0.44mm, 0.46mm, 0.48mm, and 0.50mm.

[0068] If the cross-sectional diameter of the first conductive part 133 is less than 0.35 mm, the mechanical strength of the first conductive part 133 is low, and the first conductive part 133 cannot provide stable support for the heating part 131, and the heating part 131 is prone to change in shape. If the cross-sectional diameter of the first conductive part 133 is greater than 0.50 mm, the size of the first conductive part 133 is large, which is not conducive to the miniaturization of the heating element 13. In the embodiments of the present application, the cross-sectional diameter of the first conductive part 133 is 0.35 mm-0.50 mm. On the one hand, the mechanical strength of the first conductive part 133 can be ensured, so that the first conductive part 133 can provide stable support for the heating part 131, and the possibility of change in shape of the heating part 131 is reduced. On the other hand, the size of the first conductive part 133 can be prevented from being too large, which is conducive to the miniaturization of the heating element 13.

[0069] In some embodiments, the cross-sectional diameter of the second conductive part 135 is 0.35 mm-0.50 mm. Specifically, in some embodiments, the cross-sectional diameter of the second conductive part 135 is any one value or any value between any two values in 0.35 mm, 0.37 mm, 0.39 mm, 0.40 mm, 0.41 mm, 0.42 mm, 0.44 mm, 0.46 mm, 0.48 mm and 0.50 mm.

[0070] If the cross-sectional diameter of the second conductive part 135 is less than 0.35 mm, the mechanical strength of the second conductive part 135 is low, and the second conductive part 135 cannot provide stable support for the heating part 131, and the heating part 131 is prone to change in shape. If the cross-sectional diameter of the second conductive part 135 is greater than 0.50 mm, the size of the second conductive part 135 is large, which is not conducive to the miniaturization of the heating element 13. In the embodiments of the present application, the cross-sectional diameter of the second conductive part 135 is 0.35 mm-0.50 mm. On the one hand, the mechanical strength of the second conductive part 135 can be ensured, so that the second conductive part 135 can provide stable support for the heating part 131, and the possibility of change in shape of the heating part 131 is reduced. On the other hand, the size of the second conductive part 135 can be prevented from being too large, which is conducive to the miniaturization of the heating element 13.

[0071] In some embodiments, the cross-sectional diameter of the heating part 131 is 0.10 mm-0.15 mm. Specifically, in some embodiments, the cross-sectional diameter of the second conductive part 135 is any one value or any value between any two values in 0.10 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm and 0.15 mm.

[0072] If the cross-sectional diameter of the heating portion 131 is less than 0.10 mm, the strength of the heating portion 131 is low, and deformation of the heating portion 131 is likely to occur during preparation of the heating body 10, affecting the consistency of the heating body 10; if the cross-sectional diameter of the heating portion 131 is greater than 0.15 mm, the resistance of the heating portion 131 is small, and during operation of the heating body 10, the heating portion 131 needs a longer time to reach the required temperature of the aerosol generating substrate, and the heating efficiency of the heating element 13 is poor. In the embodiments of the present application, the cross-sectional diameter of the heating portion 131 is 0.10 mm-0.15 mm, which can on the one hand ensure the strength of the heating portion 131, reduce the possibility of deformation of the heating portion 131 during preparation of the heating body 10, and improve the consistency of the heating body 10; on the other hand, the heating portion 131 can reach the required temperature of the aerosol generating substrate in a shorter time, improve the heating efficiency of the heating element 13, and ensure the user's experience.

[0073] Each of the technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure. Meanwhile, other embodiments can be derived from the above-described embodiments, so that structural and logical substitutions and changes can be made without departing from the scope of the present disclosure.

[0074] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

Claims

1. A heating element, characterized in that, 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, characterized in that, 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, characterized in that, 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, characterized in that, 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, characterized in that, 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, characterized in that, 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, characterized in that, 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, characterized in that, The first sub-part and the second sub-part are an integral structure; or, The first sub-part and the second sub-part are separate structures.

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

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

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