An atomizing core, a preparation method thereof, an atomizing core assembly and an electronic cigarette

Abstract

The application discloses an atomizing core, a preparation method thereof, an atomizing core assembly and an electronic cigarette. The atomizing core comprises a first porous metal body, a second porous metal body and a third porous metal body. The first porous metal body, the second porous metal body and the third porous metal body are sequentially stacked to form an integral structure. The thickness of the second porous metal body is greater than the thickness of the first porous metal body and the third porous metal body. The atomizing core of the application is made of the first porous metal body, the second porous metal body and the third porous metal body made of metal, thereby prolonging the service life of the atomizing core and improving the heat conduction rate and heating uniformity. In addition, the second porous metal body can store more tobacco tar due to the relatively large thickness, thereby significantly improving the atomization efficiency of the atomizing core on the tobacco tar and avoiding the atomizing core from being scrapped due to insufficient tobacco tar.

Description

Technical Field

[0001] This application relates to the field of electronic cigarette technology, and in particular to an atomizing core and its preparation method, an atomizing core assembly, and an electronic cigarette. Background Technology

[0002] Currently, most atomizer coils used in e-cigarettes on the market are ceramic coils. A ceramic coil consists of a porous ceramic body and a heating element. During atomization, the heating element is energized and then transfers heat to the porous ceramic body. However, ceramic coils have low overall strength, are easily damaged if dropped, and have a short lifespan. Furthermore, the pore size of ceramic coils is relatively small, resulting in lower e-liquid capacity and limited vapor production, ultimately leading to a less than ideal vaping experience. Summary of the Invention

[0003] This application provides an atomizing core and its preparation method, an atomizing core assembly, and an electronic cigarette to improve the overall strength, atomization effect, and inhalation taste of the atomizing core.

[0004] In a first aspect, embodiments of this application provide an atomizing core, including a first porous metal body, a second porous metal body, and a third porous metal body. The first porous metal body, the second porous metal body, and the third porous metal body are stacked sequentially to form an integral structure. The thickness of the second porous metal body is greater than the thickness of the first porous metal body and the third porous metal body.

[0005] Secondly, embodiments of this application provide an atomizing component, the atomizing component including the aforementioned atomizing core and a fixing member, the fixing member being used to fix the atomizing core.

[0006] Thirdly, embodiments of this application provide an electronic cigarette, which includes the aforementioned atomizing component and a housing, wherein the atomizing component is fixed to the housing.

[0007] Fourthly, embodiments of this application provide a method for preparing the above-mentioned atomizing core, comprising the following steps:

[0008] The metal material and the binder are mixed to obtain a mixture;

[0009] The mixture is shaped according to a preset specification to obtain a first porous metal body, a second porous metal body and a third porous metal body, wherein the thickness of the second porous metal body is greater than the thickness of the first porous metal body and the third porous metal body.

[0010] The first porous metal body, the second porous metal body, and the third porous metal body are pressed together to obtain the atomizing core.

[0011] This application provides an atomizer core, its preparation method, an atomizer core assembly, and an electronic cigarette. The atomizer core of this application, by employing a first porous metal body, a second porous metal body, and a third porous metal body made of metal, can extend the lifespan of the atomizer core, improve the heat conduction rate, and enhance the uniformity of heating. Furthermore, since the second porous metal body is thicker than the first and third porous metal bodies, it can store more e-liquid, thereby significantly improving the atomization efficiency of the atomizer core and preventing the atomizer core from becoming unusable due to insufficient e-liquid. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 A schematic diagram of a portion of the atomizing core assembly and housing of an electronic cigarette provided in an embodiment of this application.

[0014] Figure 2 for Figure 1 A schematic diagram of the structure of the atomizing core of the atomizing component in the first embodiment.

[0015] Figure 3 for Figure 1 A schematic diagram of the structure of the atomizing core of the atomizing component in the second embodiment.

[0016] Figure 4 for Figure 1 A schematic diagram of the third embodiment of the atomizing core of the atomizing component in the image.

[0017] Figure 5 for Figure 1 A schematic diagram of the first embodiment of the oil storage tank of the atomizing component.

[0018] Figure 6 for Figure 1 A schematic diagram of the second embodiment of the oil storage tank of the atomizing component.

[0019] Figure 7 for Figure 1 A schematic diagram of the support structure for the atomizing component.

[0020] Figure 8 for Figure 1 A schematic diagram of the gasket structure of the atomizing component.

[0021] Figure 9A flowchart illustrating the method for manufacturing the atomizing core provided in this application embodiment.

[0022] Explanation of main component symbols

[0023] Electronic cigarette 10

[0024] Smoke Exit Channel 101

[0025] Atomizing component 20

[0026] Casing 30

[0027] Power supply 40

[0028] Fastener 50

[0029] Atomizer coils 100, 100A, 100B

[0030] Overall structure 110

[0031] First porous metal body 111

[0032] Second porous metal body 112

[0033] First metal layer 1121

[0034] Second metal layer 1122

[0035] Third porous metal body 113

[0036] Oil collection hole 114

[0037] Insulation layer 120

[0038] Heating element 130

[0039] Heating wire 131

[0040] Heating plate 132

[0041] Through hole 1321

[0042] First heating section 140

[0043] Second heating section 150

[0044] Oil storage tanks 200, 200A

[0045] First tank 210

[0046] Second tank 220

[0047] First step surface 230

[0048] Second step surface 240

[0049] 221 Clearance Hole

[0050] Positive lead 2211

[0051] Negative lead 2212

[0052] Micropore 222

[0053] Bracket 300

[0054] Limiting space 310

[0055] Annular body 320

[0056] Limit bracket 330

[0057] Support rod 331

[0058] Limit rod 332

[0059] Smoke outlet 340

[0060] Washer 400

[0061] Circular frame 410

[0062] Flange 420 Detailed Implementation

[0063] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0064] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0065] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a” and “an” are intended to include the plural forms unless the context clearly indicates otherwise.

[0066] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0067] Please see Figure 1 , Figure 1This is a schematic diagram of a portion of the structure of the atomizing component 20 and the housing 30 of the electronic cigarette 10 provided in this application embodiment. The electronic cigarette 10 includes an atomizing component 20 and a housing 30. The atomizing component 20 is fixedly mounted on the housing 30. A smoke outlet channel 101 is formed between the atomizing component 20 and the housing 30, so that the smoke atomized by the atomizing component 20 enters the smoke outlet channel 101 and is inhaled by the user.

[0068] Skilled technicians should understand that Figure 1 This is merely a structural example of the electronic cigarette 10 and does not constitute a limitation on the electronic cigarette 10. Furthermore, the electronic cigarette 10 may include components that are more complex than those described above. Figure 1 The electronic cigarette 10 may include more or fewer components, or a combination of certain components, or different components, such as a power supply 40, a controller, etc.

[0069] The atomizing assembly 20 in this application includes an atomizing core 100 and a fixing member 50, wherein the fixing member 50 is used to fix the atomizing core 100. The fixing member 50 includes an oil reservoir 200, a bracket 300, and a gasket 400. The oil reservoir 200 is used to store e-liquid. The atomizing core 100 is housed within the oil reservoir 200. The e-liquid stored in the oil reservoir 200 seeps into the atomizing core 100, and the atomizing core 100 can atomize the e-liquid that seeps into the atomizing core 100. The oil reservoir 200 is fixed to the housing 30 of the electronic cigarette 10 by the bracket 300. The gasket 400 is sealed between the oil reservoir 200 and the atomizing core 100, on the one hand preventing excessive seepage of e-liquid from the oil reservoir 200 into the atomizing core 100, and on the other hand preventing leakage of the e-liquid stored in the oil reservoir 200.

[0070] Please refer to the following: Figure 1 and Figure 2 , Figure 2 for Figure 1 This is a schematic diagram of the structure of the atomizing core 100 of the atomizing component 20 in the first embodiment. The atomizing core 100 includes a first porous metal body 111, a second porous metal body 112, and a third porous metal body 113. The first porous metal body 111, the second porous metal body 112, and the third porous metal body 113 are stacked sequentially to form an integral structure 110. The thickness of the second porous metal body 112 is greater than the thickness of the first porous metal body 111 and the third porous metal body 113. Because the second porous metal body 112 is disposed between the first and second porous metal bodies, and its thickness is greater than that of the first and third porous metal bodies 111, the e-liquid storage capacity of the second porous metal body 112 is increased, improving the atomization effect of the atomizing core 100 on the e-liquid and preventing the atomizing core 100 from being damaged due to excessively high local temperatures when the e-liquid supply is insufficient.

[0071] To accommodate the dimensions of existing electronic cigarettes 10, the atomizer core 100 has a length of approximately 3-7 mm and a width of approximately 2-6 mm. Preferably, the atomizer core 100 has a length of 5 mm and a width of 4 mm. The thickness of the first porous metal body 111 and the third porous metal body 113 is approximately 1.0-1.2 mm. The thickness of the second porous metal body 112 is approximately 2.0-2.2 mm. Optionally, the thickness of the first porous metal body 111 and the third porous metal body 113 can be the same or different.

[0072] Understandably, since the thermal conductivity of metal materials is higher than that of ceramic materials, the materials of the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113 may include, but are not limited to, at least one of porous iron-aluminum-silicon alloy (Fe-Al-Si), porous titanium-aluminum alloy (Ti-Al), and porous stainless steel (SUS), thereby significantly improving the atomization efficiency of the atomizing core 100 for e-liquid.

[0073] In one embodiment, the oil collection hole 114 penetrates through the atomizing core 100. The oil collection hole 114 is a through hole. The number of oil collection holes 114 includes one. In another embodiment, the number of oil collection holes 114 may include multiple holes, which are symmetrically arranged from the center line of the atomizing core 100. In this embodiment, the atomizing core 100 has two oil collection holes 114, so that when the atomizing core 100 has a high draw resistance, it can supply enough e-liquid for airflow atomization, thereby improving atomization efficiency, helping to shorten heating time, thus improving flavor and enhancing the user experience. Specifically, the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113 each have two oil collection holes 114 along their thickness direction, and the two oil collection holes 114 sequentially penetrate the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113. The oil collection holes 114 sequentially penetrate the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113, thereby simplifying the manufacturing process. All the oil collection holes 114 penetrate the top and bottom of the atomizer core 100. When the atomizer core 100 is installed in the oil storage tank 200, the bottom end of the atomizer core 100 is in contact with the oil storage tank 200, thus enabling the oil collection holes 114 to store e-liquid.

[0074] In one embodiment, the oil collection hole 114 does not penetrate the atomizer core 100. The oil collection hole 114 is a blind hole. It is understood that the oil collection hole 114, which does not penetrate the atomizer core 100, serves to store e-liquid. When it partially penetrates the atomizer core 100, the oil reservoir 200 can be used to seal one end of the atomizer core 100, thus allowing the oil collection hole 114 to store e-liquid. For example, the oil collection hole 114 may penetrate the first porous metal body 111 and the second porous metal body 112, with the third porous metal body 113 sealing one end of the oil collection hole 114. Penetrating only the first porous metal body 111 and the second porous metal body 112 can also provide a better seal for the atomizer core 100. As another example, the oil collection hole 114 may penetrate the first porous metal body 111, the second porous metal body 112, and part of the third porous metal body 113. Specifically, the oil collection hole 114 extends from the first porous metal body 111 to the third porous metal body 113, and does not penetrate the end face of the third porous metal body 113 away from the second porous metal body 112. That is, each oil collection hole 114 is constructed as a semi-open storage groove, thereby further preventing the e-liquid in the oil storage tank 200 from seeping into the gap formed between the atomizing core 100 and the oil storage tank 200 through the oil collection hole 114, thereby preventing the e-liquid stored in the oil storage tank 200 from leaking.

[0075] Understandably, if the diameter of the oil collecting hole 114 is too large, the atomization volume of the atomizing core 100 will increase, but this will reduce the structural strength of the overall structure 110 of the atomizing core 100, thereby shortening its service life. To balance the overall support strength of the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113 with the oil storage capacity of the atomizing core 100, the diameter of the oil collecting hole 114 is approximately 1-3 mm, preferably 1.5 mm. Simultaneously, if the distance between two adjacent oil collecting holes 114 is too large, the structural strength of the atomizing core 100 between the two adjacent oil collecting holes 114 will increase, but this will prevent the heat from being fully utilized. To balance the overall structural strength and heat utilization efficiency, the distance between two adjacent oil collecting holes 114 is approximately 1-3 mm, preferably 2 mm.

[0076] Optionally, all the oil collection holes 114 may have the same diameter; or, some may be identical. In this embodiment, the oil collection holes 114 are circular, thereby increasing the contact area between the e-liquid and the atomizing coil 100, allowing more e-liquid to penetrate into the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113 of the atomizing coil 100. In some embodiments, the shape of the oil collection holes 114 may also be, but is not limited to, elliptical, trapezoidal, etc. In other embodiments, one or more oil collection holes 114 are symmetrically arranged from the center line of the atomizing coil 100, making the atomization effect of the atomizing coil 100 more uniform, thereby improving the user's vaping experience.

[0077] In one embodiment, the atomizing core 100 further includes a heating element 130. The heating element 130 is wound around the outer surface of the second porous metal body 112. Specifically, the heating element 130 is spaced apart from the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113 by an insulating layer 120, that is, the heating element 130 does not contact the surfaces of the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113.

[0078] In one embodiment, the atomizing core 100 further includes an insulating layer 120, and the heating element 130 is insulated from the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113 through the insulating layer 120. The insulating layer 120 is formed on the outer surface of the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113. The insulating layer 120 can be formed on the outer surface of the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113 by means of pressing, spraying, coating, impregnation, etc., which will not be described in detail in this application. A portion of the heating element 130 is sandwiched between the insulating layers 120, and the remaining portion of the heating element 130 is exposed relative to the insulating layers 120. Specifically, a portion of the heating element 130 is sandwiched between two adjacent insulating layers 120 between the first porous metal body 111 and the second porous metal body 112, and between two adjacent insulating layers 120 between the second porous metal body 112 and the third porous metal body 113, and another portion of the heating element 130 is disposed on the side wall of the second porous metal body 112.

[0079] In one embodiment, the insulating layer 120 covers the heating element 130. A cavity is provided inside the insulating layer 120, and the heating element 130 is disposed within the cavity. The insulating layer 120 may be a columnar structure, a flat plate structure, or a cuboid structure, etc. Specifically, the heating element 130 covered by the insulating layer 120 is partially sandwiched between adjacent insulating layers 120 between the first porous metal body 111 and the second porous metal body 112, and between adjacent insulating layers 120 between the second porous metal body 112 and the third porous metal body 113; the other part is disposed on the sidewall of the second porous metal body 112.

[0080] Optionally, to improve the thermal conductivity between the heating element 130 and the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113, the insulating layer 120 is made of a material with both thermal conductivity and insulation properties. Materials with thermal conductivity and insulation properties include, but are not limited to, thermally conductive silicone grease. Specifically, when the heating element 130 is energized, the heat generated by the heating element 130 can be quickly and uniformly conducted to the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113 through the insulating layer 120, thereby improving the atomization efficiency. Understandably, the heating element 130 uses constant power, i.e., constant current heating, and then conducts the heat to the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113 through the insulating layer 120, thereby increasing the heating rate of the atomizing core 100 and thus improving the overall atomization effect of the atomizing core 100.

[0081] In this embodiment, the heating element 130 is made of a material with both thermal and electrical conductivity. The material with thermal and electrical conductivity is a metallic material. Optionally, the metallic material is an alloy material. Alloy materials include, but are not limited to, iron-chromium alloys (Fe-Cr), nickel-chromium alloys (Ni-Cr), iron-chromium-aluminum alloys (Fe-Cr-Al), iron-chromium-nickel alloys (Fe-Cr-Ni), stainless steel, nickel alloys, titanium alloys, etc. Preferably, in this embodiment, the alloy material includes nickel-chromium alloys (Cr20Ni80 or Nickel-chromium 2080), iron-chromium-aluminum alloys (0Cr21Al6Nb), 316 stainless steel, nickel bars (Ni200), and α-type titanium alloys (TA1). The heating element 130 can be constructed as at least one of a heating wire 131 and a heating plate 132. To balance the heating efficiency of the heating element 130 with the bonding strength between the heating element 130 and the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113, the diameter of the heating wire 131 is approximately 0.1-0.2 mm, and the length of the heating wire 131 is approximately 30-50 mm. The thickness of the heating plate 132 is approximately 0.1-0.5 mm.

[0082] like Figure 2As shown, in this embodiment, the heating element 130 is constructed as a heating wire 131. The heating element 130 includes two first heating sections 140 and a second heating section 150 connected in series with the two first heating sections 140. The two first heating sections 140 are respectively sandwiched between a first porous metal body 111 and a second porous metal body 112, and between the second porous metal body 112 and a third porous metal body 113. The second heating section 150 extends along the thickness direction of the second porous metal body 112, that is, the second heating section 150 is disposed on one side of the second porous metal body 112. The heating element 130 is C-shaped and wound around the outer surface of the second porous metal body 112, that is, the two first heating sections 140 and the second heating section 150 surround to form a C-shaped heating element 130. The two first heating sections 140 and the second heating section 150 are integrally formed, thereby simplifying the assembly and manufacturing process of the heating element 130 and ensuring the stability of the electrical connection. In some embodiments, the two first heating sections 140 and the second heating section 150 can also be fixedly connected together by means of snap-fitting, welding, installation structure, etc., which will not be described in detail in this application.

[0083] Specifically, each of the first heating sections 140 is coiled around the two end faces of the second porous metal body 112 and is isolated from the first porous metal body 111, the second porous metal body 112 and the third porous metal body 113 by the insulating layer 120.

[0084] Optionally, the heating element 130 and the oil collection hole 114 are staggered, meaning that the projections of the heating element 130 and the oil collection hole 114 on the first porous metal body 111 or the second porous metal body 112 do not overlap. This prevents the heating element 130 from directly atomizing the e-liquid in the oil collection hole 114, improving the safety of the atomizing core 100. In some embodiments, when each first heating section 140 is constructed as a heating wire 131, each first heating section 140 is arranged around the oil collection hole 114 and spaced apart from it. This allows the heating element 130 to avoid the oil collection hole 114, and thus the heating element 130 can heat the e-liquid that has seeped into the porous structure of the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113 of the atomizing core 100, improving the atomization efficiency of the atomizing core 100.

[0085] In this embodiment, the heating element 130 is constructed as a heating wire 131. The heating wire 131 may be, but is not limited to, a Z-shape, S-shape, U-shape, or C-shape, and is wound around the oil collecting hole 114. Specifically, each first heating segment 140 of the heating wire 131 may be, but is not limited to, a Z-shape, S-shape, U-shape, or C-shape, and is wound around the oil collecting hole 114. Each second heating segment 150 of the heating wire 131 may be straight, thereby reducing the contact area between the second heating segment 150 and the second porous metal body 112, so that the amount of smoke atomized on the side of the second porous metal body 112 is less, thereby ensuring the uniformity of the atomized smoke of the atomizing core 100. In other embodiments, the second heating segment 150 may also be bent, which is not specifically limited in this application.

[0086] Please see Figure 1 and Figure 3 , Figure 3 This is a schematic diagram of the structure of the atomizing core 100A according to the second embodiment of this application. In the second embodiment, the structure of the atomizing core 100A is similar to that of the atomizing core 100 in the first embodiment, but the difference is that the heating element 130 is constructed as a heating plate 132. The heating plate 132 is covered with an insulating layer 120 or a first porous metal body 111, a second porous metal body 112, or a third porous metal body 113, and the insulating layer 120 is disposed on the surface near the heating plate 132.

[0087] In this embodiment, both the first heating section 140 and the second heating section 150 are constructed as heating plates 132. In some other embodiments, the first heating section 140 is constructed as a heating plate 132, and the second heating section 150 is constructed as a heating wire 131; alternatively, the first heating section 140 may be constructed as a heating wire 131, and the second heating section 150 as a heating plate 132. When the first heating section 140 is a heating plate 132, the first heating section 140 is stacked with the first porous metal body 111, the second porous metal body 112, or the third porous metal body 113, and a through hole 1321 is provided at the position corresponding to the oil collection hole 114 in the first heating section 140. The heating plate 132 can further avoid the problem of uneven heating on both sides of the atomizing core 100 perpendicular to the thickness direction of the atomizing core 100, thereby making the atomization effect of the atomizing core 100 more uniform and improving the user's inhalation experience.

[0088] Optionally, when the first heating section 140 is constructed as a heating plate 132, the projection of the first heating section 140 on the second porous metal body 112 coincides with the second porous metal body 112, thereby facilitating the smooth flow of e-liquid into the oil collection hole 114 and improving the heating efficiency of the first heating section 140. Specifically, the first heating section 140, constructed as a heating plate 132, covers the end faces of the first porous metal body 111, the second porous metal body 112, or the third porous metal body 113, so that the heat generated by the first heating section 140 can be more evenly conducted to the first porous metal body 111, the second porous metal body 112, and the third porous metal body 113, thereby improving the uniformity of e-liquid atomization by the atomizing core 100. When the second heating section 150 is constructed as a heating plate 132, the projection of the second heating section 150 on the second porous metal body 112 can coincide with the side of the second porous metal body 112, thereby improving the overall appearance. In another embodiment, the projection of the second heating section 150, configured as a heating plate 132, onto the second porous metal body 112 falls into the side surface of the second porous metal body 112. This results in a more uniform atomization effect of the atomizing core 100, thereby improving the user's inhalation experience.

[0089] In this embodiment, the heating plate 132 has two through holes 1321. The two through holes 1321 are symmetrically distributed from the center of the heating plate 132. The distance between the two through holes 1321 is approximately 1-3 mm, and the diameter of the through holes 1321 is approximately 1-3 mm. Preferably, the diameter of the through holes 1321 is approximately 1.5 mm, and the distance between the two through holes 1321 is approximately 2 mm. The through holes 1321 are directly opposite the oil collecting hole 114. In this embodiment, the shape and size of the through holes 1321 are the same as the shape and size of the oil collecting hole 114, so that the e-liquid can flow more smoothly from the oil storage tank 200 into the oil collecting hole 114. The through holes 1321 are circular. In some modified embodiments of this application, the shape and / or size of the through holes 1321 may be designed to be different from the shape and / or size of the oil collecting hole 114, and this application does not specifically limit this. In this embodiment, the length of the heating plate 132 is approximately 5 mm, and the width of the heating plate 132 is approximately 4 mm.

[0090] In one embodiment, the cross-sectional shape of the heating plate 132 is square, circular, or the like. Optionally, the cross-sectional shape of the heating plate 132 is the same as the cross-sectional shape of the atomizing core 100. The cross-sectional shape of the heating plate 132 can be designed according to the shape of the overall structure 110, and this application does not impose specific limitations. Specifically, the first heating section 140 and the second porous metal body 112 are stacked along the thickness direction of the atomizing core 100, and the second heating section 150 is stacked with the second porous metal body 112 perpendicular to the thickness direction of the atomizing core 100.

[0091] Please refer to the following: Figure 1 and Figure 4 , Figure 4 for Figure 1 A schematic diagram of the third embodiment of the atomizing core 100B of the atomizing component 20 is shown. The structure of the atomizing core 100B in the third embodiment is similar to that of the atomizing core 100 in the first embodiment, except that the second porous metal body 112 includes at least two stacked metal layers, and the heating element 130 is sandwiched between two adjacent metal layers. In this embodiment, the second porous metal body 112 includes a first metal layer 1121 and a second metal layer 1122 stacked. The heating element 130 is wound in an S-shape around the surfaces of the first metal layer 1121 and the second metal layer 1122 along the thickness direction of the second porous metal body 112. In some other embodiments, the heating element 130 is wound in a figure-6 shape around the first porous metal layer 111 along the thickness direction of the second porous metal body 112, or the heating element 130 is wound in a figure-6 shape around the third porous metal layer 113. The heating element 130 is sandwiched between two adjacent metal layers, which can make the heating of the second porous metal body 112 more uniform and the atomization effect better, thereby improving the taste for the smoker.

[0092] Specifically, the heating element 130 includes three first heating sections 140 and two second heating sections 150. The three first heating sections 140 are respectively disposed between the first porous metal body 111 and the first metal layer 1121, between the first metal layer 1121 and the second metal layer 1122, and between the second metal layer 1122 and the third porous metal body 113. The two second heating sections 150 are respectively disposed on one side of the first metal layer 1121 and the second metal layer 1122. The heating element 130 can be constructed as a heating plate 132 and / or a heating wire 131. The arrangement of the heating plate 132 and / or the heating wire 131 can be referred to the description of the atomizing core 100 of the first embodiment and the atomizing core 100A of the second embodiment, and will not be described in detail in this application.

[0093] Understandably, the number of metal layers in the second porous metal body 112 can be greater than two, and this application does not impose a specific limitation. The thicknesses of the first metal layer 1121 and the second metal layer 1122 can be the same or different. Optionally, the thickness of at least two metal layers in the second porous metal body 112 gradually decreases from the center of the second porous metal body 112 towards both sides to improve the atomization efficiency and vapor quality of the atomizing core 100B.

[0094] Please refer to the following: Figure 1 and Figure 5 , Figure 5 for Figure 1A schematic diagram of the structure of the oil storage tank 200 in the first embodiment is shown. The atomizing coil 100 is housed within the oil storage tank 200. In this embodiment, the oil storage tank 200 includes a first tank 210 and a second tank 220 that are interconnected. The first tank 210 is used to store e-liquid, and the second tank 220 houses the atomizing coil 100. The first tank 210 and the second tank 220 are arranged in a stepped manner, and in the orthogonal projection direction along the center line of the oil storage tank 200, the projection of the second tank 220 lies within the projection of the first tank 210. By designing the first tank 210 and the second tank 220 with different sizes, assembly is not only convenient, but the risk of leakage of the e-liquid stored in the first tank 210 is further avoided.

[0095] The first groove 210 includes two first stepped surfaces 230 that are exposed to the second groove 220. The second groove 220 includes two second stepped surfaces 240 that are respectively connected to the two first stepped surfaces 230. Both second stepped surfaces 240 of the second groove 220 are provided with a plurality of microholes 222, so that the smoke atomized by the atomizing core 100 can flow out from the microholes 222 and enter the smoke outlet channel 101 of the electronic cigarette 10.

[0096] Understandably, since metal powder easily remains in the atomizer core 100 during manufacturing, and the particle size of this metal powder is approximately 25-50 micrometers, the pore size of the micropores 222 is approximately 10-20 micrometers. Therefore, the micropores 222 can filter out the metal powder and other impurities remaining in the atomizer core 100 during manufacturing, thus preventing the user from inhaling metal powder and other impurities overflowing from the e-liquid reservoir 200 when using the electronic cigarette 10. Preferably, the pore size of the micropores 222 is 10 micrometers. Furthermore, because the pore size of the micropores 222 is so small, e-liquid is less likely to overflow from the micropores 222 into the e-liquid reservoir 200, thus preventing e-liquid overflow and the user from inhaling it or contaminating the components inside the electronic cigarette 10, thereby reducing the safety hazards of the electronic cigarette 10. In summary, the pore size design of the micropores 222 not only filters out metal powder and other impurities remaining in the atomizer core 100 during manufacturing, but also prevents e-liquid from overflowing from the micropores 222 in the e-liquid reservoir 200. Simultaneously, it allows aerosols smaller than 300 nanometers to pass through, thereby improving the quality of the vapor and allowing users to inhale a finer vapor, thus enhancing the user experience. The micropores 222 can be formed using laser engraving, precisely creating micropores 222 of a preset size on the second step surface 240 of the second reservoir 220.

[0097] In this embodiment, the end face of the atomizing core 100 near the first groove 210 is approximately coplanar with the first stepped surface 230, thereby enabling more precise control of the vapor output of the atomizing core 100 and improving the user's smoking experience. In some embodiments, the end face of the atomizing core 100 near the first groove 210 may also be higher than the first stepped surface 230. It is understood that those skilled in the art can design the structure of the atomizing core 100 according to the type of electronic cigarette 10, such as a men's electronic cigarette or a women's electronic cigarette, or according to the vapor output.

[0098] Both the first groove 210 and the second groove 220 are quadrangular prism structures. The cross-section of the first groove 210 and the second groove 220 perpendicular to the central axis of the electronic cigarette 10 is rectangular. Optionally, to accommodate the dimensions of the overall structure 110 and considering the processing performance of the oil storage tank 200, the wall thickness of the first groove 210 and the second groove 220 is approximately 0.2-0.4 mm, the length of the first groove 210 is approximately 8-10 mm, the width of the first groove 210 is approximately 4-5 mm, and the height of the first groove 210 is approximately 4-6 mm. The length of the second groove 220 is approximately 5-6 mm, the width of the second groove 220 is approximately 4-5 mm, and the height of the second groove 220 is approximately 4-4.6 mm.

[0099] It should be noted that, in this embodiment, the length, width, and height of the oil storage tank 200 together constitute the three orthogonal directions of the oil storage tank 200. The term "length" in this document refers to the length of the longer side of the bottom surface of the tank; the term "width" refers to the length of the shorter side of the bottom surface of the tank; and the term "height" refers to the depth of the tank, i.e., the distance between the bottom and top surfaces of the tank.

[0100] Please refer to the following: Figure 1 and Figure 6 , Figure 6 for Figure 1 The diagram shows a second embodiment of the oil reservoir 200A of the atomizing component 20. The oil reservoir 200A of the second embodiment is structurally similar to the oil reservoir 200 of the first embodiment, except that the projection of the first tank 210 onto the second tank 220 completely overlaps with the second tank 220; that is, no stepped surface is formed between the first tank 210 and the second tank 220. The first tank 210 is positioned above the second tank 220, and the atomizing core 100 is housed within the second tank 220.

[0101] Please refer to the following: Figure 1 , Figure 5 and Figure 7 , Figure 7 for Figure 1A schematic diagram of the support 300 for the atomizing component 20 is shown. The support 300 is used to mount the oil reservoir 200. A limiting space 310 is provided in the middle of the support 300. The second groove 220 passes through the limiting space 310, and the first groove 210 stops against the support 300, thereby achieving support and fixation for the oil reservoir 200.

[0102] The bracket 300 includes an annular body 320 and a limiting frame 330 fixed to the annular body 320. The annular body 320 and the limiting frame 330 can be integrally formed, or fixedly connected together by welding, snap-fitting, screwing, gluing, or other methods. The limiting frame 330 forms a limiting space 310 on the side opposite to the annular body 320.

[0103] Specifically, the limiting frame 330 includes a plurality of support rods 331 extending from the annular body 320 toward the central axis of the annular body 320, and limiting rods 332 connecting the plurality of support rods 331. The space enclosed by the limiting rods 332 serves as the limiting space 310. In this embodiment, the limiting rods 332 are constructed in an annular structure. Optionally, the shape of the limiting rods 332 matches the shape of the second tank 220, thereby facilitating the assembly and disassembly of the oil storage tank 200 and making the structure of the oil storage tank 200 and the support 300 more compact. The annular body 320, together with several support rods 331 and limiting rods 332, forms several smoke outlet holes 340 around the limiting space 310, which communicate with the smoke outlet channel 101. Thus, the smoke atomized by the atomizing core 100 flows out of the second groove 220 and enters the smoke outlet channel 101 of the electronic cigarette 10 through the smoke outlet holes 340, allowing the e-liquid of the electronic cigarette 10 to pass through more smoothly, thereby enhancing the user's taste. Understandably, in some embodiments, the limiting frame 330 may omit the limiting rods 332, meaning the space enclosed by the support rods 331 serves as the limiting space 310.

[0104] In this embodiment, the limiting rod 332 is constructed as a rectangular frame, meaning the shape of the limiting rod 332 is rectangular. The number of support rods 331 includes four, each fixed to the center of one of the four sides of the rectangular frame. It is understood that the number of support rods 331 can also include one, two, three, or more than four, which will not be elaborated upon in this application. The more support rods 331 there are, the better the support performance of the bracket 300. The length of the limiting rod 332 is approximately 5-5.5 mm, and the width of the limiting rod 332 is approximately 4-4.5 mm. The shape of the annular body 320 includes, but is not limited to, circles, rectangles, triangles, etc. The shape of the limiting rod 332 can also include, but is not limited to, circles, rhombuses, etc. The shape of the limiting rod 332 matches the outer shape of the second groove 220.

[0105] Please refer to the following: Figure 1 and Figure 8 , Figure 8 for Figure 1 A schematic diagram of the gasket 400 of the atomizing component 20 is shown. The first porous metal body 111 is sealed to the wall of the first groove 210 or the second groove 220 through the gasket 400, thereby preventing excessive e-liquid stored in the first groove 210 from flowing into the second groove 220 and causing oil leakage.

[0106] Optionally, the gasket 400 is disposed on the circumferential edge of the first porous metal body 111 away from the second porous metal body 112, and the gasket 400 is staggered from a number of micropores 222, thereby improving the smoothness of the vapor flow generated by the atomizing core 100.

[0107] The gasket 400 is a closed-loop structure. The gasket 400 includes an annular frame 410 and a flange 420 extending outward from the peripheral edge of the annular frame 410. The annular frame 410 seals the gap between the atomizing core 100 and the oil reservoir 200. In this embodiment, the annular frame 410 is sealed between the walls of the atomizing core 100 and the second reservoir 220, i.e., the annular frame 410 seals the gap between the walls of the atomizing core 100 and the second reservoir 220. The flange 420 stops the end face of the first porous metal body 111 of the atomizing core 100 away from the second porous metal body 112, thereby preventing the annular frame 410 from shifting due to vibration of the electronic cigarette 10 or pressure of the e-liquid, thus ensuring the connection stability between the gasket 400 and the atomizing core 100 and the oil reservoir 200, and preventing oil leakage from the oil reservoir 200. Understandably, in some embodiments, the flange 420 may be omitted, i.e., the washer 400 only includes the annular frame 410, thereby saving costs.

[0108] The annular frame 410 and the flange 420 are integrally formed. The projection of the flange 420 onto the annular frame 410 is connected to the annular frame 410. The flange 420 does not cover the oil collection hole 114 of the atomizing core 100, so that the atomizing core 100 can smoothly absorb the e-liquid stored in the first groove 210. The flange 420 can be constructed as a closed annular structure or an open annular structure.

[0109] The shape of the annular frame 410 matches the shape of the first porous metal body 111 of the atomizing core 100. To accommodate the size of the atomizing core 100, the gasket 400 is approximately 5-6 mm long and 4-5 mm wide. The material of the gasket 400 includes, but is not limited to, silicone or flexible graphite sandwiched with metal, thereby improving the seal between the atomizing core 100 and the groove walls of the second groove 220.

[0110] Please refer to it again. Figure 1The atomizing assembly 20 also includes a positive electrode lead 2211 and a negative electrode lead 2212 electrically connected to the heating element 130. Specifically, in some embodiments, one of the second stepped surfaces 240 has two clearance holes 221 for the positive electrode lead 2211 and the negative electrode lead 2212 to pass through. In another embodiment, the two second stepped surfaces 240 respectively have two clearance holes 221 for the positive electrode lead 2211 and the negative electrode lead 2212 to pass through. In this way, the connection line between the heating element 130 and the battery is shortened, and the stability of the electrical connection between the heating element 130 and the positive electrode lead 2211 and the negative electrode lead 2212 is ensured. In other embodiments, the two clearance holes 221 may also be provided on the groove wall of the first groove 210.

[0111] Please see Figure 9 , Figure 9 A flowchart illustrating a method for manufacturing an atomizing core according to an embodiment of this application. Specifically, the method for manufacturing an atomizing core according to an embodiment of this application includes the following steps, wherein the method is applicable to the manufacturing of atomizing cores 100, 100A, and 100B in the first, second, and third embodiments.

[0112] Step S1: Mix the metal material and the binder to obtain a mixture.

[0113] In some embodiments, the metallic material includes at least one selected from iron powder, aluminum powder, silicon powder, nickel powder, and titanium powder. The mass percentage of iron powder is 70-80%, the mass percentage of aluminum powder is 20-30%, and the mass percentage of silicon powder is 1-2%. Preferably, the mass percentages of iron powder and aluminum powder are 75% and 25%, respectively. The binder includes, but is not limited to, paraffin wax, sodium chloride, and potassium chloride. In some embodiments, the mixing time is approximately 1800 r / min to ensure uniform mixing, making the density of the resulting porous metal body more uniform, improving heating uniformity, and resulting in better atomization. In other embodiments, the atomizer core's own resistance heat is used for heating and atomizing the e-liquid, simplifying the structure and improving efficiency. This can increase the resistance of the porous atomizer core material, eliminating the need for a heating element and facilitating direct connection of the power supply 40 terminals to the two ends of the porous atomizer core. In other embodiments, semiconductor elements, including but not limited to boron and tin, are added to the mixture.

[0114] Step S2: The mixture is shaped according to a preset specification to obtain a first porous metal body, a second porous metal body and a third porous metal body, wherein the thickness of the second porous metal body is greater than the thickness of the first porous metal body and the third porous metal body.

[0115] Step S3: Press the first porous metal body, the second porous metal body and the third porous metal body together to obtain the atomizing core.

[0116] The first porous metal body, the second porous metal body, and the third porous metal body are pressed together to obtain the atomizing core, which specifically includes:

[0117] A heating element is pressed together with a first porous metal body, a second porous metal body, and a third porous metal body, and an insulating material to form an atomizing core. The atomizing core includes a first porous metal body, a second porous metal body, a third porous metal body, a heating element, and an insulating layer. The heating element is wound around the surface of the second porous metal body and is insulated from the first porous metal body, the second porous metal body, and the third porous metal body by the insulating layer.

[0118] Understandably, to ensure a tighter bonding between the first, second, and third porous metal bodies, the bonding temperature is approximately 560℃, the bonding time is approximately 1-2 hours, and the bonding stress is approximately 50 MPa. The insulating material is, but is not limited to, thermally conductive silicone grease.

[0119] Following step S3, the atomizing core preparation method further includes sintering the pressed atomizing core; and removing excess material and burrs from the sintered atomizing core to prevent powder particles from clogging the micropores of the oil reservoir and to prevent the powder particles from being inhaled by the user. The sintering temperature is approximately 700℃, and the sintering time is approximately 2 hours.

[0120] The atomizing core prepared by the method of this application has a porosity of approximately 45-55%, a pore size of approximately 15-25 μm, and an oil absorption rate of 20-30%. Thus, the porous structure of the atomizing core can absorb e-liquid. Therefore, after the atomizing core is working, the e-liquid stored in the first porous metal body, the second porous metal body, and the third porous metal body is atomized into smoke for the user to inhale.

[0121] This application tests the oil absorption rate and water absorption rate of Products 1, 2, 3, and 4 prepared using the above-described method. Specifically, the first, second, and third porous metal bodies in Products 1 and 3 are all made of Ti-48Al, while the first, second, and third porous metal bodies in Products 2 and 4 are all made of FeAlSi. The heating elements for Products 1, 2, 3, and 4 are all heating wires made of Ni-20Cr, while the heating wires for Products 3 and 4 are made of FeCrAl. The resistance of the first, second, and third porous metal bodies is approximately 0.3-0.5Ω, their length is approximately 5mm, and their width is approximately 4mm. The thickness of the heating wire is approximately 0.2mm, and its length is approximately 5mm.

[0122] The test method for water absorption / oil absorption rate includes the following steps: (1) Clean the product surface with alcohol and water, and dry it at 120°C for 1 hour to remove water / oil from the pores and surface of the first, second, and third porous metal bodies; (2) After drying, wait for the product to cool to room temperature and measure the sample mass M0; (3) Immerse the product in water / oil, keep it for 15 minutes, take it out, wipe off excess water / oil from the surface, let it stand for 10 minutes, and measure the product mass M1. Wherein, water / oil absorption rate: Q(water / oil)=(M1-M0) / M0×100%.

[0123] The test results for the water absorption / oil absorption rates of Products 1, 2, 3, and 4 using the aforementioned test method are as follows. The oil absorption rates of the first, second, and third porous metal bodies in Products 1 and 3 are approximately 20%-40%. The oil absorption rates of the first, second, and third porous metal bodies in Products 2 and 4 are all 25%. From the above test results, it can be deduced that the materials of the first, second, and third porous metal bodies of the products affect the oil absorption and water absorption rates of the products.

[0124] This application tests the atomization effect of porous metal (Ti-Al) and porous SiO2 ceramic atomizing cores. The atomization effect test method includes the following steps: (1) Select a porous Ti-Al alloy with a size of Φ5.5×(3~4)mm. The mass of the porous Ti-Al alloy is about 10mg, which is basically the same as the mass of the porous SiO2 ceramic; (2) Inject e-liquid drop by drop into the porous Ti-Al alloy (porous SiO2 / Ti-Al). Observe whether the e-liquid is completely absorbed after each drop is injected until the e-liquid stays on the surface and no longer penetrates the material; (3) Stop dripping at this time to ensure that the material reaches the maximum e-liquid absorption capacity; (4) Use a DC power supply to contact the material surface with copper wire, copper sheet, and stainless steel sheet respectively to form a circuit, so that the material produces an atomization effect. The test results of the atomization effect test show that because the resistance of porous metal (Ti-Al) is very small (0.2-0.4Ω), porous metal (Ti-Al) is suitable for adjusting the atomization effect by constant current. The Ni-Cr metal heating element printed on porous SiO2 ceramic has a relatively high resistance (1.2Ω), so porous SiO2 ceramic is suitable for adjusting the atomization effect by constant voltage.

[0125] This application also measures other performance parameters of Products 1, 2, 3, and 4. Specifically, the porosity of the first, second, and third porous metal bodies of Products 1 and 3 is approximately 55%, the average pore size is approximately 60-100 μm, the specific heat capacity is approximately 0.65 J / g·K, the thermal conductivity is approximately 3.6 W / (m·K), and the thermal diffusivity is approximately 3.4 mm. 2 / s. The porosity of the first, second, and third porous metal bodies of Products 2 and 4 is approximately 50%, and the average pore size is approximately 20 μm. The compressive strength of the first, second, and third porous metal bodies of Products 2 and 3 is approximately 30-50 MPa, and the density of the first, second, and third porous metal bodies of Products 2 and 4 is approximately 3.0-3.5 g / cm³. 3 The densities of the first, second, and third porous metal bodies in Product 1 are approximately 2.0-2.5 g / cm³. 3 The densities of the first, second, and third porous metal bodies in Product 3 are approximately 1.5-1.6 g / cm³. 3 The heating wires of Products 1 and 2 have a resistivity of approximately 100-120 μΩ / m and a resistance of approximately 1.0-1.4 Ω at 20℃, and the heating wires are printed using thick film printing. The heating wires of Products 3 and 4 have a resistivity of 120-140 μΩ / m and a resistance of approximately 1.2-1.8 Ω at 20℃.

[0126] This application provides an atomizer core, its preparation method, an atomizer core assembly, and an electronic cigarette. The atomizer core of this application, by employing a first porous metal body, a second porous metal body, and a third porous metal body made of metal, can extend the lifespan of the atomizer core, improve the heat conduction rate, and enhance the uniformity of heating. Furthermore, since the second porous metal body is thicker than the first and third porous metal bodies, it can store more e-liquid, thereby significantly improving the atomization efficiency of the atomizer core and preventing the atomizer core from becoming unusable due to insufficient e-liquid.

[0127] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0128] Those skilled in the art will recognize that, in conjunction with the embodiments disclosed herein, the components and steps of each example have been generally described in terms of functionality in the foregoing description. The specific implementation of these functions depends on the particular application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

Claims

1. An atomizing core, characterized in that, It includes a first porous metal body, a second porous metal body, and a third porous metal body; the first porous metal body, the second porous metal body, and the third porous metal body are stacked sequentially to form an integral structure; the thickness of the second porous metal body is greater than the thickness of the first porous metal body and the third porous metal body, and the atomizing core also includes a heating element, which is wound around the outer surface of the second porous metal body.

2. The atomizing core according to claim 1, characterized in that, It also includes an insulating layer, through which the heating element is insulated from the first porous metal body, the second porous metal body and the third porous metal body.

3. The atomizing core according to claim 2, characterized in that, The insulating layer covers the heating element.

4. The atomizing core according to claim 2, characterized in that, The outer surfaces of the first porous metal body, the second porous metal body, and the third porous metal body are all provided with the insulating layer; a portion of the heating element is sandwiched between the insulating layers, and the remaining portion of the heating element is exposed relative to the insulating layers.

5. The atomizing core according to claim 2, characterized in that, The second porous metal body includes at least two stacked metal layers, with the heating element sandwiched between two adjacent metal layers.

6. The atomizing core according to claim 2, characterized in that, The heating element includes two first heating sections and a second heating section connected in series with the two first heating sections. The two first heating sections are respectively sandwiched between the first porous metal body and the second porous metal body and between the second porous metal body and the third porous metal body. The second heating section extends along the thickness direction of the second porous metal body.

7. The atomizing core according to claim 2, characterized in that, The atomizing core has an oil collection hole.

8. The atomizing core according to claim 7, characterized in that, The number of oil collecting holes includes multiple holes, which are symmetrically arranged from the center line of the atomizing core.

9. The atomizing core according to claim 7, characterized in that, The heating element is offset from the oil collection hole.

10. The atomizing core according to claim 7, characterized in that, The oil collecting hole passes through the first porous metal body, the second porous metal body, and the third porous metal body in sequence.

11. The atomizing core according to claim 7, characterized in that, The oil collection hole penetrates the first porous metal body and the second porous metal body, and the third porous metal body covers one end of the oil collection hole.

12. The atomizing core according to claim 7, characterized in that, The heating element is constructed as a heating wire, which is wound around the oil collection hole.

13. The atomizing core according to claim 12, characterized in that, The heating wire is arranged in a Z, S, U, or C shape around the oil collection hole.

14. The atomizing core according to claim 7, characterized in that, The heating element is constructed as a heating plate, which is stacked with the first porous metal body, the second porous metal body, or the third porous metal body. The heating plate has a through hole at the position corresponding to the oil collection hole.

15. An atomizing component, characterized in that, It includes the atomizing core and the fixing member according to any one of claims 1 to 14, wherein the fixing member is used to fix the atomizing core.

16. The atomizing component according to claim 15, characterized in that, The fixing component includes an oil reservoir, and the atomizing core is housed within the oil reservoir.

17. The atomizing component according to claim 16, characterized in that, The oil storage tank includes a first tank and a second tank that are connected to each other. The first tank is used to store e-liquid, and the second tank houses the atomizing core.

18. The atomizing component according to claim 17, characterized in that, The first tank and the second tank are arranged in a stepped manner. In the orthogonal projection direction along the center line of the oil storage tank, the projection of the second tank is located within the projection of the first tank.

19. The atomizing component according to claim 17, characterized in that, The first groove includes two first stepped surfaces that are exposed outside the second groove, and the second groove includes two second stepped surfaces that are respectively connected to the two first stepped surfaces. Each of the two second stepped surfaces of the second groove is provided with a plurality of microholes.

20. The atomizing component according to claim 19, characterized in that, The atomizing component also includes a positive electrode lead and a negative electrode lead that are electrically connected to the heating element, wherein the second stepped surface of one of the components has two clearance holes for the positive electrode lead and the negative electrode lead to pass through.

21. The atomizing component according to claim 20, characterized in that, The two second step surfaces are respectively provided with two clearance holes for the positive electrode lead and the negative electrode lead to pass through.

22. The atomizing component according to claim 19, characterized in that, The fastener includes a washer, and the first porous metal body is sealed to the wall of the first groove or the second groove through the washer.

23. The atomizing component according to claim 22, characterized in that, The washer is disposed on the circumferential edge of the first porous metal body away from the second porous metal body, and the washer is offset from the plurality of micropores.

24. The atomizing component according to claim 17, characterized in that, The fastener includes a bracket for mounting the oil storage tank, a limiting space is provided in the middle of the bracket, the second tank passes through the limiting space, and the first tank stops against the bracket.

25. An electronic cigarette, characterized in that, The atomizing component and housing are included according to any one of claims 15 to 24, wherein the atomizing component is fixed to the housing.

26. A method for preparing an atomizing core, characterized in that, Includes the following steps: The metal material and the binder are mixed to obtain a mixture; The mixture is shaped according to a preset specification to obtain a first porous metal body, a second porous metal body and a third porous metal body, wherein the thickness of the second porous metal body is greater than the thickness of the first porous metal body and the third porous metal body. The first porous metal body, the second porous metal body, and the third porous metal body are pressed together to obtain the atomizing core.

27. The method for preparing the atomizing core according to claim 26, characterized in that, The metallic material includes at least one of iron powder, aluminum powder, silicon powder, nickel powder, and titanium powder, wherein the iron powder accounts for 70-80% by mass, the aluminum powder accounts for 20-30% by mass, and the silicon powder accounts for 1-2% by mass.

28. The method for preparing the atomizing core according to claim 26, characterized in that, The atomizing core is obtained by pressing the first porous metal body, the second porous metal body, and the third porous metal body together, specifically including: The atomizing core is obtained by pressing the heating element with the first porous metal body, the second porous metal body, and the third porous metal body together with an insulating material. The atomizing core includes the first porous metal body, the second porous metal body, the third porous metal body, the heating element, and an insulating layer. The heating element is wound around the outer surface of the second porous metal body and is insulated from the first porous metal body, the second porous metal body, and the third porous metal body through the insulating layer.

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