Electronic atomization device and heating net core thereof

Abstract

The utility model discloses an electronic atomization device and a heating net core thereof, the heating net core comprises a net-shaped heating part and at least two pin parts connected with the net-shaped heating part, and the resistivity of the pin parts is lower than that of the net-shaped heating part; a plurality of welding point positions corresponding to the pin parts are formed on the net-shaped heating part, and each pin part is connected with the net-shaped heating part through the plurality of welding point positions; the ratio of the total area of the welding point positions corresponding to the pin parts to the orthographic projection area of the pin parts on the net-shaped heating part is not smaller than 0.1, or the total area of the welding point positions corresponding to the pin parts is not smaller than 0.3 mm < 2 >. In the heating net core, the combination position of the pin part and the net-shaped heating part generates less heat, so that carbon deposition and burnt smell at the combination position can be avoided, the service life of the heating net core is prolonged, the power shared by the combination position is also reduced, the heat of the net-shaped heating part is ensured, the atomization efficiency is improved, and the atomization effect is improved. And the taste of the electronic atomization device is ensured.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of electronic atomization, and in particular to an electronic atomization device and a heating mesh core thereof. Background Art

[0002] The heating cores of current atomizing electronic cigarettes are divided into spring wires and mesh core heating wires according to their shapes. Compared with spring wires, mesh core heating wires have a larger heating area and higher atomization efficiency, and can therefore provide a more restored taste.

[0003] The mesh core heating wire is generally composed of two parts, a mesh heating part and two round rod-shaped leads. The leads are welded to the heating part through spot welding, and the ends of the two leads can be connected to the positive and negative electrodes of the battery respectively. When the heating wire is working, the current enters the heating part through the leads, and the heating part generates heat and heats the e-liquid, thereby generating smoke.

[0004] Since the lead wire and the heating part are connected by a small number of solder joints, the resistance at the connection between the lead wire and the heating part is relatively large. During the power-on process, the contact part between the two parts generates excessive heat, which can easily cause carbon deposits or even a burnt smell at the solder joint, and also reduce the life of the heating wire. At the same time, due to the excessive resistance at the solder joint, the power that should have been provided to the heating part is shared too much, resulting in a decrease in the heat of the heating part, reducing the atomization efficiency of the heating core, and causing the taste of the electronic cigarette to deteriorate. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides an electronic atomization device and a heating mesh core thereof, which can effectively reduce the resistance at the connection between the lead and the heating part, avoid carbon deposition or burnt smell at the connection, increase the life of the heating mesh core, and ensure the atomization efficiency of the heating mesh core and the taste of the electronic atomization device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A heating mesh core is used in an electronic atomization device, comprising a mesh heating portion configured to generate heat when powered on and at least two pin portions connected to the mesh heating portion, wherein the resistivity of the pin portions is lower than that of the mesh heating portion; a plurality of welding points are formed on the mesh heating portion corresponding to each of the pin portions, and each of the pin portions is connected to the mesh heating portion through the plurality of welding points; the ratio of the total area of ​​the welding points corresponding to each of the pin portions to the orthographic projection area of ​​the pin portion on the mesh heating portion is not less than 0.1, or the total area of ​​the welding points corresponding to each of the pin portions is not less than 0.3 mm 2 .

[0008] As one of the implementation methods,

[0009] The diameter of the welding point is not less than 0.5 mm, and / or the distance between adjacent welding points is less than the diameter of each welding point.

[0010] As one of the implementation modes, a plurality of rows of welding points arranged side by side are formed on the mesh-shaped heating portion corresponding to each of the pin portions, and each of the pin portions is connected to the mesh-shaped heating portion via the plurality of rows of welding points.

[0011] As one implementation manner, every two adjacent welding points are connected to each other to form a continuous welding line or welding surface.

[0012] As one of the embodiments, the heating mesh core also includes a welding material portion, which covers the welding point and is combined with the pin portion; the resistivity of the welding material portion is lower than the resistivity of the mesh heating portion and / or the resistivity of the pin portion.

[0013] As one embodiment, the welding material is partially attached to the outer peripheral surface of the pin portion, and the pin portion is covered on the surface of the mesh heating portion.

[0014] As one embodiment, the mesh heating part includes a main body and a conductive covering layer, the covering layer is located at least in the area where the welding point is located, the pin part is combined with the covering layer, and the resistivity of the covering layer is lower than the resistivity of the mesh heating part and / or the resistivity of the pin part.

[0015] As one embodiment, the material of the mesh heating part is at least one of iron-chromium-aluminum alloy, nickel-chromium alloy, nickel-chromium-iron alloy, nickel-iron alloy, silver alloy, and copper alloy; and / or the material of the pin part is at least one of nickel, gold, silver, platinum, nickel-chromium-iron alloy, nickel-chromium alloy, and iron-chromium-aluminum alloy.

[0016] As one implementation manner, the surface of the pin portion facing the mesh heating portion is a plane.

[0017] As one implementation manner, the cross-section of the pin portion is square.

[0018] As one implementation manner, the pin portion is crimped or riveted to the mesh heating portion.

[0019] Another object of the present invention is to provide an electronic atomization device, comprising the above-mentioned heating mesh core.

[0020] In the heating mesh core of the present invention, since the resistivity of the pin part is lower than that of the mesh heating part, the junction between the pin part and the mesh heating part generates less heat. On the one hand, it can avoid carbon accumulation and burnt smell at the junction and extend the life of the heating mesh core. On the other hand, it reduces the power shared at the junction, and the heat generation of the mesh heating part is guaranteed, which is beneficial to improving the atomization efficiency and ensuring the taste of the electronic atomization device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of an electronic atomization device according to an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of an atomizer core according to an embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of a heating mesh core according to an embodiment of the utility model;

[0024] Figure 4 This is a schematic structural diagram of another heating mesh core according to an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of another heating mesh core according to an embodiment of the utility model;

[0026] Figure 6 for Figure 5 Schematic diagram of the combination of the pin part and the mesh heating part at A in the middle;

[0027] Figures 7A to 7C Schematic diagram of the combination of several other pin parts and the mesh heating part of the heating mesh core of the embodiment of the utility model;

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] In the present invention, the terms "disposed", "provided with", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0034] The present application provides an electronic atomization device, which is used to atomize liquid to form an aerosol for inhalation by a user.

[0035] like Figure 1 As shown, the electronic atomization device includes an atomization component 1 and a battery component 2. The atomization component 1 includes an atomization core 10 and a shell 20. The shell 20 is internally formed with an oil storage tank 21, an atomization chamber 22, and an atomization channel 23. Among them, the battery component 2 is used to provide electrical energy for the atomization component and heat the atomization core 10; the oil storage tank 21 is used to store atomized liquid, the atomization chamber 22 connects the oil storage tank 21 and the atomization channel 23, and the atomization core 10 is installed in the atomization chamber 22. During the operation of the electronic atomization device, the atomized liquid in the oil storage tank 21 can enter the atomization chamber 22, and is heated and atomized by the atomization core 10 to generate an aerosol. As the user inhales, the aerosol can be sucked out through the atomization channel 23.

[0036] It can be understood that the battery assembly 2 can be located in the same shell as the atomizer assembly 1, or in a different shell from the atomizer assembly 1, so that the battery assembly 2 and the atomizer assembly 1 are separately arranged. When the atomizer assembly 1 or the battery assembly 2 needs to be replaced, only the corresponding part needs to be replaced, so that the product can be reused. Moreover, the battery assembly 2 can be recycled to reduce pollution and be more economical and environmentally friendly.

[0037] like Figure 2 As shown, in one embodiment, the atomizer core 10 includes a heating mesh core 101 and a liquid guiding member 102 in surface contact with the heating mesh core 101. The liquid guiding member 102 can be liquid guiding cotton, porous ceramics, etc., which are used to temporarily store the atomized liquid transmitted from the oil storage tank 21 and conduct it to the heating mesh core 101 in contact therewith; the heating mesh core 101 is electrically connected to the battery assembly 2, and can heat the atomized liquid transmitted by the liquid guiding member 102 after power is turned on, thereby forming an aerosol.

[0038] Specifically, Figure 2 In the illustrated embodiment, the heating mesh core 101 is cylindrical, and the liquid guide member 102 is also cylindrical accordingly. The liquid guide member 102 is wrapped around the outer peripheral surface of the heating mesh core 101. After the atomizer core 10 is installed in the atomizer chamber 22, the atomizer core 10 is axially consistent with the atomizer chamber 22, and the hollow part inside the atomizer core 10 is connected to the atomizer channel 23. It can be understood that in other embodiments, the heating mesh core 101 can also be sheet-shaped, and the liquid guide member 102 is also sheet-shaped accordingly. The heating mesh core 101 is attached to one side of the liquid guide member 102, and the other side of the liquid guide member 102 can face the oil storage tank 21 to receive the atomized liquid transmitted by the oil storage tank 21.

[0039] like Figure 3 As shown, the present application provides a heating mesh core 101, comprising a mesh heating portion 11 configured to generate heat when powered on and at least two pin portions 12 connecting the mesh heating portion 11, wherein the resistivity of the pin portions 12 is lower than the resistivity of the mesh heating portion 11.

[0040] In the heating mesh core of the present application, since the resistivity of the pin part is lower than that of the mesh heating part, the junction between the pin part and the mesh heating part generates less heat. On the one hand, it can avoid carbon accumulation and burnt smell at the junction and extend the life of the heating mesh core. On the other hand, it reduces the power shared at the junction, and the heat generation of the mesh heating part is guaranteed, which is beneficial to improving the atomization efficiency and ensuring the taste of the electronic atomization device.

[0041] Specifically, the mesh heating part 11 and the pin part 12 are welded together, and a plurality of welding points P are formed on the mesh heating part 11 corresponding to each pin part 12, and each pin part 12 is connected to the mesh heating part 11 through a plurality of welding points P. The welding points P may not need to be filled with welding material, and the material of the welding points P of the mesh heating part 11 may be melted by laser welding to be combined with the pin part 12; or the welding points P may also be filled with welding material, and the mesh heating part 11 and the pin part 12 are welded together through the welding material.

[0042] For example, the total area of ​​the welding points P corresponding to each pin portion 12 is not less than 0.1, such as 0.15, 0.2, 0.3, etc., to the orthographic projection area of ​​the pin portion 12 on the mesh heating portion 11; or the total area of ​​the welding points P corresponding to each pin portion 12 is not less than 0.3mm 2 For example, 0.5mm 2 , 0.6mm 2 , 0.8mm 2 After repeated experiments, the inventors found that when the setting of the welding point P meets any of the above condition parameters, the heat generated at the joint between the pin portion 12 and the mesh heating portion 11 has little effect on the atomization effect, the life of the heating mesh core 101 is longer, and the taste of the aerosol is significantly improved.

[0043] In one embodiment, the welding point P does not need to be filled with welding material, and the material of the welding point P of the mesh heating part 11 is melted and combined with the pin part 12. At this time, since the resistivity of the pin part 12 is lower than the resistivity of the mesh heating part 11, the resistance at the junction of the pin part 12 and the mesh heating part 11 is small, so the heat generated at this place is small, which is conducive to reducing the temperature and power loss at this place. Under the same heating power conditions, the atomization efficiency of the mesh heating part 11 is higher. Exemplarily, the material of the mesh heating part 11 is at least one of iron-chromium-aluminum alloy, nickel-chromium alloy, nickel-chromium-iron alloy, nickel-iron alloy, silver alloy, and copper alloy; the material of the pin part 12 is at least one of nickel, gold, silver, platinum, nickel-chromium-iron alloy, nickel-chromium alloy, and iron-chromium-aluminum alloy. For example, when the material of the mesh heating part 11 is iron-chromium-aluminum, the material of the pin part 12 can be nickel, aluminum, silver, gold, etc. with lower resistivity.

[0044] like Figure 3In the embodiment shown in , the distance between adjacent welding points P is less than the diameter of each welding point P. By reducing the distance between the welding points P, the number of welding points P can be increased, the contact area between the mesh heating part 11 and the pin part 12 can be increased, the contact resistance between the mesh heating part 11 and the pin part 12 can be reduced, the heat loss therein can be reduced, and the atomization ability and service life of the heating mesh core 101 can be improved. It has been experimentally verified that the amount of smoke generated by the heating mesh core 101 using such welding points P can be increased by at least 10%, and the service life can be increased by 30%. Exemplarily, the diameter of the welding point P is not less than 0.5 mm.

[0045] Figure 4 This is a schematic structural diagram of another heating mesh core according to an embodiment of the utility model.

[0046] like Figure 4 In another embodiment, every two adjacent welding points P are connected to each other to form a continuous welding line or welding surface to achieve a line welding effect. By increasing the number of welding points P to a certain extent, the welding points P are connected or overlapped with each other, so that the welding point of the mesh heating part 11 and the pin part 12 is continuously combined.

[0047] Through software simulation, the simulation results of the heating mesh core 101 under three process conditions, namely, 4 welding points P, 8 welding points P, and wire welding, with a constant voltage current of 3.7V were compared. It was found that the power density of the process with 4 welding points P was the highest at 1.8e10W / m near the welding point. 3 The highest power density of the process near the welding point of 8 welding points P is 1.1e10W / m 3 The maximum power density of wire welding near the welding point is 4.5e8 W / m 3 , the maximum power density differs by 40 times, that is, by increasing the number of welding points, the power loss can be effectively reduced and the atomization efficiency can be improved.

[0048] Through experiments, it was found that the heating mesh core with 4 welding points at P at the lead was compared with the heating mesh core with 8 welding points at P. After being pumped through an 800-port machine and disassembled, it was found that the heating mesh core with 4 welding points had significantly more fouling than the heating mesh core with 8 welding points. In the process of separating the heating mesh core from the oil-conducting cotton, the heating mesh core would tear off more cotton threads at the pin welding point. At the same time, by comparing the fouling inside the oil-conducting cotton, it was found that the fouling at 4 welding points was significantly more than that at 8 welding points. From the side, the heating mesh core with 4 welding points almost "burned through" the multiple layers of oil-conducting cotton. Therefore, the effect of the heating mesh core with 8 welding points on improving fouling is consistent with the simulation results: increasing the flow area at the welding point and reducing the connection resistance can effectively reduce the heating at the pin, thereby reducing fouling.

[0049] In one embodiment, a plurality of rows of welding points P arranged side by side are formed on the mesh heating portion 11 corresponding to each pin portion 12, and each pin portion 12 is connected to the mesh heating portion 11 through the plurality of rows of welding points P. That is, the circumference of the same pin portion 12 is welded to the mesh heating portion 11 through the plurality of rows of welding points P, which can further increase the contact area between the pin portion 12 and the mesh heating portion 11, and reduce the heat generation and resistance at the joint.

[0050] Figure 5 This is a schematic diagram of the structure of another heating mesh core according to an embodiment of the utility model; Figure 6 for Figure 5 Schematic diagram of the connection between the pin part at A in the middle and the mesh heating part.

[0051] Considering that when the pin part 12 is a round rod, when the pin part 12 contacts the flat mesh heating part 11, the pin part 12 can only make line contact with the mesh heating part 11 at the tangent point, resulting in a small contact area between the two, which causes the contact resistance when the current passes through the heating mesh core to be too large, generating unnecessary heat, which not only shares the heat of the heating sheet but also easily causes high temperature burning of the lead wire and shortens the life. Therefore, if Figure 5 and Figure 6 As shown, in one embodiment, the surface of the pin portion 12 facing the mesh heating portion 11 is a plane. For example, the cross section of the pin portion 12 is a square, that is, the pin portion 12 is a square rod. The pin portion 12 of this embodiment and the mesh heating portion 11 are in contact with each other by plane-to-plane lamination, which can greatly increase the contact area between the pin portion 12 and the mesh heating portion 11, thereby reducing the generation of contact resistance, improving the energy utilization rate of the mesh heating portion 11, and reducing the generation of carbon deposits, thereby improving the product life.

[0052] Figures 7A to 7C Schematic diagram of the combination of several other pin parts and the mesh heating part of the heating mesh core according to the embodiment of the utility model.

[0053] like Fig. 7A In one embodiment, the heating mesh core 101 includes a welding material portion 13 in addition to the mesh heating portion 11 and the pin portion 12. The welding material portion 13 covers the welding point P and is combined with the pin portion 12; the resistivity of the welding material portion 13 is lower than the resistivity of the mesh heating portion 11, or the resistivity of the welding material portion 13 is lower than the resistivity of the pin portion 12, or the resistivity of the welding material portion 13 is lower than the resistivity of both the mesh heating portion 11 and the pin portion 12.

[0054] Exemplarily, the material of the mesh heating portion 11 is at least one of iron-chromium-aluminum alloy, nickel-chromium alloy, nickel-chromium-iron alloy, nickel-iron alloy, silver alloy, and copper alloy; the material of the pin portion 12 is at least one of nickel, gold, silver, platinum, nickel-chromium-iron alloy, nickel-chromium alloy, and iron-chromium-aluminum alloy. For example, the welding material portion 13 can be made of the same material as the pin portion 12, and its resistivity is lower than that of the mesh heating portion 11.

[0055] In one embodiment, the solder portion 13 may be attached to the outer circumference of the pin portion 12, and the pin portion 12 may be covered on the surface of the mesh heating portion 11. It is understood that in other embodiments, the entire outer circumference of the pin portion 12 may not be covered, but only the contact portion between the pin portion 12 and the mesh heating portion 11 may be filled, and the solder portion 13 may be used as a bonding material.

[0056] Specifically, when welding the solder part 13 to the mesh heating part 11 and the pin part 12, the pin part 12 can be placed directly above the mesh heating part 11, and then the solder part 13 can be coated on the connection between the pin part 12 of the mesh heating part 11 by coating or printing, and then the product coated with the solder part 13 is heated and welded, and the solder part 13 is heated and melted after heating, and the mesh heating part 11 and the pin part 12 are welded together. Through such a setting, the contact area between the mesh heating part 11 and the pin part 12 is greatly increased, and the contact resistance between the mesh heating part 11 and the pin part 12 can be effectively reduced.

[0057] In the actual simulation process, it was found that by changing the material of the welding material part 13, under the condition of online welding, the material of the welding material part 13 was changed from iron-chromium-aluminum with lower conductivity (the same material as the heating core mesh heating part 11) to nickel with higher conductivity (the same material as the pin part 12). 3 Down to 1.2e8 W / m 3 , the power loss density at the soldering point can be reduced to 1 / 3.

[0058] like Figure 7B and Figure 7C In one embodiment, the mesh heating portion 11 includes a main body portion 11A and a conductive covering layer 11B, the covering layer 11B is at least located in the area where the welding point P is located, the pin portion 12 is combined with the covering layer 11B, and the resistivity of the covering layer 11B is lower than the resistivity of the mesh heating portion 11 and / or the resistivity of the pin portion 12. Exemplarily, the material of the covering layer 11B includes but is not limited to metal materials such as silver, gold, aluminum, nickel, and conductive ceramic materials such as aluminum nitride, silicon nitride, titanium nitride, and aluminum oxide.

[0059] The covering layer 11B may be formed on the surface of the main body 11A by plating, or may be formed on the surface of the main body 11A by other composite methods.

[0060] By forming a covering layer 11B on the surface of the mesh heating portion 11, the covering layer 11B can be welded to the lead portion 12, and the welding point P is located on the surface of the covering layer 11B. Figure 7B As shown in FIG. 7C , when there is a solder material portion 13 , the pin portion 12 can be directly soldered to the covering layer 11B, which can be achieved by melting the covering layer 11B. For example, as shown in FIG. 7C , when there is a solder material portion 13 , the pin portion 12 can be soldered to the covering layer 11B by solidifying the solder material portion 13 .

[0061] In addition, the pin portion 12 and the mesh heating portion 11 of the present application can also be directly crimped or riveted, or they can be combined by crimping or riveting and then welded together in the above manner.

[0062] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A heating mesh core, used in an electronic atomization device, characterized in that: The invention comprises a mesh heating portion configured to generate heat when powered on and at least two pin portions connected to the mesh heating portion, wherein the resistivity of the pin portion is lower than that of the mesh heating portion; a plurality of welding points are formed on the mesh heating portion corresponding to each of the pin portions, and each of the pin portions is connected to the mesh heating portion through the plurality of welding points; the ratio of the total area of ​​the welding points corresponding to each of the pin portions to the orthographic projection area of ​​the pin portion on the mesh heating portion is not less than 0.1, or the total area of ​​the welding points corresponding to each of the pin portions is not less than 0.3 mm 2 .

2. The heating network core according to claim 1, characterized in that: The diameter of the welding point is not less than 0.5 mm, and / or the distance between adjacent welding points is less than the diameter of each welding point.

3. The heating mesh core according to claim 1, characterized in that: The mesh-shaped heating part has a plurality of rows of welding points arranged side by side corresponding to each of the pin parts, and each of the pin parts is connected to the mesh-shaped heating part through the plurality of rows of welding points.

4. The heating mesh core according to claim 1, characterized in that: Every two adjacent welding points are connected to each other to form a continuous welding line or welding surface.

5. The heating network core according to claim 1, characterized in that: It also includes a welding material part, which covers the welding point and is combined with the pin part; the resistivity of the welding material part is lower than the resistivity of the mesh heating part and / or the resistivity of the pin part.

6. The heating network core according to claim 5, characterized in that: The solder material is partially attached to the outer peripheral surface of the pin portion, and covers the pin portion on the surface of the mesh-shaped heating portion.

7. The heating network core according to claim 1, characterized in that: The mesh heating part includes a main body and a conductive covering layer, the covering layer is located at least in the area where the welding point is located, the pin part is combined with the covering layer, and the resistivity of the covering layer is lower than the resistivity of the mesh heating part and / or the resistivity of the pin part.

8. The heating mesh core according to claim 1, characterized in that: The material of the mesh heating part is one of iron-chromium-aluminum alloy, nickel-chromium alloy, nickel-iron alloy, silver alloy, and copper alloy; and / or the material of the pin part is one of nickel, gold, silver, platinum, nickel-chromium alloy, and iron-chromium-aluminum alloy.

9. The heating network core according to claim 1, characterized in that: The material of the mesh heating part is nickel-chromium-iron alloy.

10. The heating network core according to claim 1, characterized in that: The material of the pin portion is nickel-chromium-iron alloy.

11. The heating network core according to any one of claims 1 to 10, characterized in that: The surface of the pin portion facing the mesh heating portion is a plane, and the cross section of the pin portion is a square; And / or, the pin portion is crimped or riveted to the mesh heating portion.

12. An electronic atomization device, characterized in that: It comprises the heating mesh core according to any one of claims 1 to 11.

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