Heat generating body, method for manufacturing the same, and electronic cigarette

Abstract

The application relates to a heating body, a manufacturing method thereof and an electronic cigarette. The manufacturing method of the heating body comprises the following steps: providing a first heating wire, a second heating wire, a polymer yarn and a porous base; mixing the first heating wire and the polymer yarn to form a composite wire; mixing the second heating wire and the composite wire to form a heating net, the heating net having a plurality of first through holes and a plurality of overlapping points, the overlapping points being located at positions where the composite wire and the second heating wire overlap; performing cutting treatment on the heating net to form a plurality of second through holes in the heating net, the opening of the second through hole being greater than or equal to the opening of the first through hole, and the edges of the second through hole being uniformly distributed with the overlapping points; performing hot-pressing treatment on the heating net; and fixing the heating net on the porous base to form the heating body. The manufacturing method of the heating body provided by the application is simple in forming process, and the formed heating net is good in structural stability, thin in thickness, high in resistance value and good in application on the electronic cigarette.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic cigarettes, in particular to a heating body, a manufacturing method thereof and an electronic cigarette. BACKGROUND

[0002] At present, the electronic cigarette realizes heating atomization by heating the tobacco tar through the heating assembly arranged in the electronic cigarette. The common method is to embed the heating wire into the ceramic heating body to form the heating assembly. However, this arrangement has a long preheating time, a long tobacco tar atomization time and a low heating capacity.

[0003] In view of the above problems, the metal wire is woven into a mesh structure to form a heating mesh, and the heating mesh is arranged on the oil absorption cotton to meet the demand of the electronic cigarette for heating capacity. The resistance of the heating mesh is related to the thickness, mesh count and wire diameter of the metal wire. The thinner the thickness, the lower the mesh count and the smaller the wire diameter of the metal wire, the higher the resistance, and the more it can meet the demand of the heating capacity. However, the atomization effect of the heating mesh is proportional to the mesh count, that is, the higher the mesh count of the heating mesh, the better the atomization effect. In order to meet the demand of the heating capacity, the wire diameter of the metal wire needs to be very small, which increases the difficulty and cost of the preparation process, and the heating mesh is prone to loose and crack.

[0004] Therefore, it is expected to provide a metal mesh with thin thickness, high mesh count, small wire diameter, which can meet the demand of the heating capacity and is easy to prepare without loosening and cracking. SUMMARY

[0005] Therefore, it is necessary to provide a heating body, a manufacturing method thereof and an electronic cigarette in view of the problems that the metal mesh cannot meet the demand of the heating capacity and is prone to loosening and cracking.

[0006] A manufacturing method of a heating body, comprising the following steps:

[0007] S110, providing a first heating wire, a second heating wire, a high molecular yarn and a porous base;

[0008] S120, mixing the first heating wire and the high molecular yarn to form a composite wire;

[0009] S130, mixing the second heating wire and the composite wire to form a mesh structure to obtain a heating mesh, the heating mesh has a plurality of first through holes and a plurality of overlapping points, the overlapping points are located at the overlapping positions of the composite wire and the second heating wire;

[0010] S140, cutting the heating mesh to form a plurality of second through holes in the heating mesh, and the opening of the second through hole is greater than or equal to the opening of the first through hole, and the second through hole edge uniformly distributes a plurality of overlapping points;

[0011] S150, heat pressing the heating net;

[0012] S160, fixing the heating net on the porous matrix to form a heating body;

[0013] The execution sequence of the step S140 and the step S150 can be exchanged.

[0014] The manufacturing method of the heating body comprises the following steps: firstly, mixing the first heating wire and the polymer yarn to form a composite wire; secondly, mixing the second heating wire and the composite wire to form a net structure, obtaining a heating net, the heating net having a plurality of first through holes and a plurality of overlapping points; thirdly, cutting the heating net to form a plurality of second through holes in the heating net, the opening of the second through hole being greater than or equal to the opening of the first through hole, the resistance of the heating net being increased under the premise of ensuring the mesh number of the heating net, and the heating amount of the heating net being further increased; fourthly, heat pressing the heating net, on the one hand, the polymer yarn is heat deformed and fused on the first heating wire and / or the second heating wire, the strength of the overlapping points is greatly enhanced, the edge structure of the heating net can be reinforced due to the uniform distribution of the plurality of overlapping points on the edge of the second through hole, and the adverse phenomena such as loosening and cracking of the edge structure of the heating net in the long-term use process are prevented, on the other hand, the thickness of the heating net can be reduced and the resistance of the heating net can be increased after the heat pressing treatment, and the demand of the electronic cigarette for the heating amount is met; and finally, fixing the heating net after the heat pressing treatment on the porous matrix to form a heating body, the heating net can generate heat when being electrified, and the tobacco oil permeated in the porous matrix is atomized for the user to smoke. The heating net has good structural stability, is especially suitable for the weaving of the first heating wire and the second heating wire with small diameters, has a thin thickness and a large resistance, has a simple forming process, and can be well applied to the electronic cigarette.

[0015] In one embodiment, the first heating wire accounts for 10%-50% in the composite wire.

[0016] In one embodiment, the step S120 specifically comprises the following steps:

[0017] The polymer yarn is bonded or wound on the first heating wire to form a composite wire.

[0018] In one embodiment, the step S130 specifically comprises the following steps:

[0019] The composite wire is bonded or wound on the second heating wire to form a net structure, obtaining a heating net.

[0020] In one embodiment, the step S120 further comprises the following steps before the step S120:

[0021] S111, performing surface pretreatment on the first heating wire, the second heating wire, and the polymer yarn.

[0022] In one of the embodiments, the step S150 specifically comprises:

[0023] The heating net is placed in a hot press for heat pressing treatment, and the pressure is kept at 10-20 MPa.

[0024] In one of the embodiments, the first heating wire is one or more of stainless steel wire, nickel wire, or iron-chromium-aluminum wire, the second heating wire is one or more of stainless steel wire, nickel wire, or iron-chromium-aluminum wire, and the polymer yarn is one or more of polyester, polypropylene, polyamide, or resin.

[0025] In one of the embodiments, the mesh number of the heating net after cutting treatment is 100-500, and the thickness of the heating net after heat pressing treatment is 30-100 pm.

[0026] In one of the embodiments, the step S160 specifically comprises:

[0027] S161, the heating net after heat pressing treatment is cooled to room temperature in a natural environment.

[0028] S162, the cooled heating net is adhered to the porous substrate by heat-conducting adhesive.

[0029] In one of the embodiments, the following steps are further included:

[0030] S170, providing a power supply assembly and a conductor;

[0031] S180, welding the conductor on the heating net, and electrically connecting the conductor with the power supply assembly, or applying conductive silver paste between the heating net and the conductor, and electrically connecting the conductor with the power supply assembly.

[0032] A heating body obtained by the method for manufacturing a heating body according to any one of the above technical solutions, the heating body comprising a porous substrate and a heating net adhered to the porous substrate, the heating net being formed by mixing a second heating wire and a composite wire, the composite wire being formed by mixing a first heating wire and a polymer yarn, the heating net before cutting treatment having a plurality of first through holes and a plurality of overlapping points, the overlapping points being located at positions where the composite wire and the second heating wire overlap, and the heating net after cutting treatment having a plurality of second through holes, the opening of the second through hole being greater than or equal to the opening of the first through hole, and the edges of the second through hole uniformly distributing a plurality of overlapping points.

[0033] The heating body has good structural stability, a thin thickness, a large resistance value, and a simple forming process, and can be well applied to an electronic cigarette.

[0034] An electronic cigarette comprises the heating body, and further comprises a shell and a power component, the power component is fixed on the shell, an atomization cavity is arranged in the shell, the heating body is fixed in the atomization cavity and electrically connected with the power component.

[0035] The heating body is fixed in the atomization cavity and electrically connected with the power component, the heating body is powered by the power component to generate heat to atomize the tobacco tar for a user to smoke. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 A flowchart of a manufacturing method of the heating body;

[0037] Figure 2 A flowchart of the manufacturing method of the heating body after the step S140 and the step S150 are exchanged;

[0038] Figure 3 A structural diagram of the heating body;

[0039] Figure 4 A structural diagram of the heating net in one of the embodiments;

[0040] Figure 5 A structural diagram of the heating net in another of the embodiments;

[0041] Figure 6 A structural diagram of the heating net in another of the embodiments;

[0042] Figure 7 A flowchart of the manufacturing method of the heating body in one of the preferred embodiments;

[0043] Figure 8 A detailed flowchart of the step S160 in one of the preferred embodiments;

[0044] Figure 9 A flowchart of the manufacturing method of the heating body in one of the preferred embodiments.

[0045] Reference signs:

[0046] 100, heating body;

[0047] 110, first heating wire; 120, second heating wire; 130, polymer yarn; 140, porous base; 150, composite wire; 160, heating net; 161, first through hole; 162, overlapping point; 163, second through hole. DETAILED DESCRIPTION

[0048] In order to make the above objectives, characteristics and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and it is intended that the present application cover all modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

[0049] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0050] In addition, the terms "first", "second", "third" and the like are used only for descriptive purposes and are not intended to indicate or imply relative importance or a specific number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0051] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "over", "above" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0053] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0054] The technical solutions provided by the embodiments of the present application are described below with reference to the accompanying drawings.

[0055] As shown in Figures 1-6 The present application provides a manufacturing method of a heating body 100, and the manufacturing method of the heating body 100 comprises the following steps:

[0056] Step S110: providing a first heating wire 110, a second heating wire 120, a high-molecular yarn 130 and a porous base 140. The provided first heating wire 110 and the second heating wire 120 need to have high resistivity, heat resistance and small wire diameter, so that when the first heating wire 110 and the second heating wire 120 are powered, the first heating wire 110 and the second heating wire 120 can generate a large amount of heat, meet the heat demand of the heating body 100 after forming, and the volume of the heating body 100 is small after the first heating wire 110 and the second heating wire 120 are formed, which meets the space arrangement requirement of the heating body 100 for the electronic cigarette.

[0057] Step S120: mixing the first heating wire 110 with the polymer yarn 130 to form a composite wire 150. Specifically, the polymer yarn 130 is adhered or wound on the first heating wire 110 to form the composite wire 150. In one embodiment, the polymer yarn 130 is adhered on the first heating wire 110 by an adhesive to form the composite wire 150, wherein the adhesive needs to have the property of high temperature resistance. In another embodiment, the polymer yarn 130 is wound on the first heating wire 110, i.e., the first heating wire 110 and the polymer yarn 130 are cross-woven to form the composite wire 150, the first heating wire 110 and the polymer yarn 130 are woven into one body, and the first heating wire 110 and the polymer yarn 130 are wound on each other to improve the stability of the composite wire 150 after forming.

[0058] Step S130: mixing the second heating wire 120 with the composite wire 150 to form a mesh structure to obtain a heating mesh 160, the heating mesh 160 has a plurality of first through holes 161 and a plurality of overlapping points 162, the overlapping points 162 are located at the positions where the composite wire 150 and the second heating wire 120 overlap. Specifically, the composite wire 150 is adhered or wound on the second heating wire 120 to form a mesh structure to obtain the heating mesh 160. In one embodiment, the composite wire 150 is adhered on the second heating wire 120 by an adhesive to obtain the heating mesh 160, wherein the adhesive needs to have the property of high temperature resistance. In another embodiment, the composite wire 150 is wound on the second heating wire 120, i.e., the second heating wire 120 and the composite wire 150 are cross-woven to form a mesh structure to obtain the heating mesh 160, the second heating wire 120 and the composite wire 150 are woven into one body, and the second heating wire 120 and the composite wire 150 are wound on each other to improve the stability of the heating mesh 160 after forming.

[0059] Step S140: cutting the heating mesh 160 to form a plurality of second through holes 163 in the heating mesh 160, and the opening of the second through hole 163 is greater than or equal to the opening of the first through hole 161, and the edges of the second through hole 163 are uniformly distributed with a plurality of overlapping points 162. By cutting the heating mesh 160, the resistance of the heating mesh 160 can be increased under the premise of ensuring the mesh number of the heating mesh 160, and then the heating amount of the heating mesh 160 is increased. Specifically, during the cutting process of the heating mesh 160, the heating mesh 160 can be cut according to actual needs, as long as the opening of the second through hole 163 in the heating mesh 160 after cutting is greater than or equal to the opening of the first through hole 161, and the edges of the second through hole 163 are uniformly distributed with a plurality of overlapping points 162. For example, in one embodiment, the heating mesh 160 is cut into a plurality of heating mesh pieces 160a, and the edges of the second through hole 163 of each heating mesh piece 160a are uniformly distributed with a plurality of overlapping points 162. Figure 4As shown, the whole heating net 160 is cut to have only the second through holes 163, so that the resistance of the heating net 160 can be maximally increased. In another embodiment, as shown in Figure 5 the edge region of the heating net 160 is cut to have a plurality of second through holes 163 distributed in the edge region of the heating net 160. In yet another embodiment, as shown in Figure 6 the center region of the heating net 160 is cut to have a plurality of second through holes 163 distributed in the center region of the heating net 160. Of course, other regions of the heating net 160 can also be cut in a similar manner as the above embodiments, which will not be described herein.

[0060] Step S150: heat pressing the heating net 160. The high-molecular yarn 130 is heat deformed and fused on the first heating wire 110 and / or the second heating wire 120, so that the strength of the overlapping points 162 is greatly increased, the edge structure of the heating net 160 can be reinforced to prevent the edge structure of the heating net 160 from loosening or cracking during long-term use. Moreover, the heating net 160 after heat pressing can be reduced in thickness and increased in resistance to meet the demand of the electronic cigarette for heating amount;

[0061] Step S160: fixing the heating net 160 on the porous base 140 to form the heating body 100, as shown in Figure 3 Specifically, the heating net 160 after heat pressing and the surface of the porous base 140 matched therewith are uniformly coated with glue, so that the heating net 160 and the porous base 140 can be glued together.

[0062] The manufacturing method of the heating body 100 comprises the following steps: firstly, mixing the first heating wire 110 with the polymer yarn 130 to form a composite wire 150; secondly, mixing the second heating wire 120 with the composite wire 150 to form a mesh structure, and obtaining a heating mesh 160, wherein the heating mesh 160 has a plurality of first through holes 161 and a plurality of overlapping points 162; thirdly, cutting the heating mesh 160 to form a plurality of second through holes 163 in the heating mesh 160, wherein the opening of the second through hole 163 is greater than or equal to the opening of the first through hole 161, the resistance of the heating mesh 160 is increased under the premise of ensuring the mesh number of the heating mesh 160, and the heat generation of the heating mesh 160 is further increased; fourthly, heat pressing the heating mesh 160, on the one hand, the polymer yarn 130 is thermally deformed and fused on the first heating wire 110 and / or the second heating wire 120, and the strength of the overlapping point 162 is greatly enhanced, the edge structure of the heating mesh 160 can be reinforced by the uniform distribution of the plurality of overlapping points 162 on the edge of the second through hole 163, and the adverse phenomena such as loosening and cracking of the edge structure of the heating mesh 160 in the long-term use process can be prevented, and on the other hand, the thickness of the heating mesh 160 can be reduced and the resistance of the heating mesh 160 can be increased after the heat pressing treatment, and the demand of the electronic cigarette for the heat generation can be met; and finally, fixing the heating mesh 160 after the heat pressing treatment on the porous substrate 140 to form the heating body 100, and when the heating mesh 160 is electrified, heat can be generated to atomize the tobacco oil permeated in the porous substrate 140 for the user to smoke. The heating mesh 160 of the heating body 100 has good structural stability, is especially suitable for the weaving formation of the first heating wire 110 and the second heating wire 120 with small diameters, has a thin thickness, a large resistance, a simple forming process, and can be well applied to the electronic cigarette.

[0063] It should be noted that in the present application, the execution order of steps S140 and S150 can be exchanged, and the flowchart after the execution order of steps S140 and S150 is exchanged is shown in Figure 2 .

[0064] Further, as shown in Figures 3-6As shown, the first heating wire 110 accounts for 10%-50% of the composite wire 150. In a specific arrangement, after the first heating wire 110 is mixed with the polymer yarn 130 to form the composite wire 150, the first heating wire 110 can account for one of 10%, 20%, 30%, 40%, and 50%, and correspondingly, the polymer yarn 130 accounts for 90%, 80%, 70%, 60%, and 50%. Of course, the proportion of the first heating wire 110 in the composite wire 150 is not limited to the above specific values, and the proportion of the first heating wire 110 in the composite wire 150 can also be other values within the range of 10%-50%. After the heating net 160 is subjected to heat pressing treatment, the first heating wire 110 and the polymer yarn 130 mixed in the above proportions to form the composite wire 150 can not only ensure the strength of the overlapping points 162, but also ensure that the heating net 160 has a large resistance value and can generate sufficient heat to atomize the tobacco oil permeating in the porous matrix 140 for the user to smoke.

[0065] In order to improve the forming quality of the heating net 160, one preferred embodiment is as follows: Figures 1-7 As shown, the step S120 further includes a step S111. The step S111 specifically includes surface pretreatment of the first heating wire 110, the second heating wire 120, and the polymer yarn 130. The first heating wire 110 and the second heating wire 120 can be wiped with fine gauze to remove rust, dust, or other impurities on the surfaces of the first heating wire 110 and the second heating wire 120. The polymer yarn 130 can be cleaned and dried with an ethanol solution to remove oil stains or other impurities attached to the surface of the polymer yarn 130. By surface pretreating the first heating wire 110, the second heating wire 120, and the polymer yarn 130, the surface cleanliness of the first heating wire 110, the second heating wire 120, and the polymer yarn 130 is ensured, and the resistance value of the heating net 160 formed by mixing the second heating wire 120 and the composite wire 150 is prevented from being affected by impurities, thereby improving the forming quality of the heating net 160.

[0066] It should be noted that the first heating wire 110 and the second heating wire 120 can also be surface pretreated with metallographic sandpaper or other means capable of removing rust, dust, and other impurities on the surfaces of the first heating wire 110 and the second heating wire 120; similarly, the polymer yarn 130 can also be surface pretreated with a nitric acid solution or other plasma solution.

[0067] Specifically, as shown in Figures 3-6As shown, the first heating wire 110 is one or more of stainless steel wire, nickel wire or iron-chromium-aluminum wire, the second heating wire 120 is also one or more of stainless steel wire, nickel wire or iron-chromium-aluminum wire, and the high polymer yarn 130 is one or more of polyester, polypropylene, polyamide or resin. In one embodiment, the first heating wire 110 is provided as stainless steel wire, the second heating wire 120 is provided as nickel wire, and the high polymer yarn 130 is provided as polyester. The stainless steel wire and the polyester are mixed and woven to form a composite wire 150, and the nickel wire and the composite wire 150 are mixed and woven to form the heating net 160. In another embodiment, two first heating wires 110 are provided as stainless steel wire and iron-chromium-aluminum wire, the number of the two first heating wires 110 can be selected according to the preset resistance value, two second heating wires 120 are provided as stainless steel wire and nickel wire, the number of the two second heating wires 120 can also be selected according to the preset resistance value, and two high polymer yarns 130 are provided as polyester and polypropylene, and the number of the two high polymer yarns 130 can also be selected according to the firmness of the heating net 160 after molding. The stainless steel wire, the iron-chromium-aluminum wire, the polyester and the polypropylene are mixed and woven to form the required composite wire 150, and the stainless steel wire, the nickel wire and the composite wire 150 are mixed and woven to form the required heating net 160.

[0068] Of course, in other embodiments, other numbers and types of first heating wires 110, second heating wires 120 and other numbers and types of high polymer yarns 130 can be mixed to form the required heating net 160, and the arrangement is similar to the above two embodiments, which will not be described here. In addition, the first heating wire 110 and the high polymer yarn 130 are not limited to the types provided above, and the first heating wire 110 and the second heating wire 120 can also be other materials with high resistivity and heat resistance, such as carbon fiber, and the high polymer yarn 130 can also be other high polymer materials that can melt. The specific types of the first heating wire 110, the second heating wire 120 and the high polymer yarn 130 are not limited by the present application.

[0069] Further, in the present embodiment, as shown in Figures 4-6 the heating net 160 after the cutting process has a mesh number of 100-500 meshes to ensure that the molded heating net 160 has a large resistance value, so that the molded heating body 100 can meet the demand of the electronic cigarette for heating amount. In specific arrangement, the mesh number of the heating net 160 after the cutting process can be one of 100 meshes, 200 meshes, 300 meshes, 400 meshes and 500 meshes, of course, the mesh number of the heating net 160 after the cutting process is not limited to the above specific values, but can also be other values within the range of 100-500 meshes. In addition, for electronic cigarettes with small demand for heating amount, the mesh number of the heating net 160 after the cutting process can also be other values outside the range of 100-500 meshes.

[0070] And, as Figures 4-6 shown in the embodiment, the thickness of the heat-generating net 160 after the heat pressing treatment is 30-100 μm, so that the formed heat-generating net 160 can be applied to the electronic cigarette with small internal space, realizing the miniaturization design of the electronic cigarette and ensuring that the heat-generating net 160 has a high resistance value, so that the heat-generating net 160 can generate a large amount of heat after being powered on. In the specific setting, the thickness of the heat-generating net 160 after the heat pressing treatment can be one of 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm and 100 μm. Of course, the thickness of the heat-generating net 160 after the heat pressing treatment is not limited to the above specific values, but can also be other values within the range of 30-100 μm. In addition, for the occasions where the internal space of the electronic cigarette and the heat generation requirement are not high, the thickness of the heat-generating net 160 after the heat pressing treatment can also be other values outside the range of 30-100 μm.

[0071] In order to heat press the heat-generating net 160, a preferred embodiment is shown in Figures 1-6 S130, which specifically includes placing the heat-generating net 160 in the heat press to heat press it, and keeping the pressure at 10-20 MPa. In the specific setting, when heat treating the heat-generating net 160, the pressure applied by the heat press to the heat-generating net 160 can be one of 10 MPa, 12 MPa, 14 MPa, 16 MPa, 18 MPa and 20 MPa. The pressure of the heat press to the heat-generating net 160 is not limited to the above specific values, but can also be other values within the range of 10-20 MPa. In addition, for the heat-generating net 160 with other thickness values, the pressure of the heat press to the heat-generating net 160 during the molding process of the heat-generating net 160 can also be other values outside the range of 10-20 MPa. During the molding process of the heat-generating net 160, the pressure of the heat press to the heat-generating net 160 is kept within the range of 10-20 MPa, so that the thickness of the heat-generating net 160 after the heat pressing treatment is 30-100 μm, facilitating the setting of the heat-generating net 160 in the electronic cigarette.

[0072] And, as Figures 3-6As shown, when the heat-generating net 160 is subjected to heat treatment, the temperature setting of the hot press can be set according to the type of the polymer yarn 130 selected, as long as the polymer yarn 130 can be heat-deformed and fused to the surface of the first heating wire 110 and / or the second heating wire 120 at the temperature range, so as to reinforce the overlapping points 162 and the edge structure of the heat-generating net 160. For example, when polyester is selected as the polymer yarn 130, the temperature setting inside the hot press is set to 90-120°C, and at this temperature range, the polyester can be heat-deformed and fused to the surface of the first heating wire 110 and / or the second heating wire 120. For another example, when polypropylene is selected as the polymer yarn 130, the temperature setting inside the hot press is set to 110-140°C, and at this temperature range, the polypropylene can be heat-deformed and fused to the surface of the first heating wire 110 and / or the second heating wire 120. For another example, when polyamide is selected as the polymer yarn 130, the temperature setting inside the hot press is set to 160-180°C, and at this temperature range, the polyamide can be heat-deformed and fused to the surface of the first heating wire 110 and / or the second heating wire 120. For another example, when resin is selected as the polymer yarn 130, the temperature setting inside the hot press is set to 210-230°C, and at this temperature range, the resin can be heat-deformed and fused to the surface of the first heating wire 110 and / or the second heating wire 120.

[0073] In order to facilitate the molding of the heat-generating body 100, a preferred embodiment is as follows: Figures 1-6 With Figure 8 As shown, the step S160 specifically includes:

[0074] Step S161: After the heat-pressing treatment, the heat-generating net 160 is cooled to room temperature in the natural environment. It should be noted that, if the molding efficiency of the heat-generating body 100 is to be accelerated, the heat-generating net 160 can also be placed in a cooling mechanism for cooling, so as to accelerate the cooling efficiency of the heat-generating net 160 and further improve the molding efficiency of the heat-generating body 100.

[0075] Step S162: The cooled heat-generating net 160 is adhered to the porous substrate 140 by means of heat-conducting glue. Specifically, the heat-conducting glue is uniformly applied on the surface of the heat-generating net 160 and the porous substrate 140, so that the heat generated by the heat-generating net 160 is well transmitted to the porous substrate 140 through the heat-conducting glue, and the heat concentrated on the porous substrate 140 atomizes the tobacco tar permeated in the porous substrate 140 for the user to smoke. The heat-conducting glue is preferably made of silica gel material.

[0076] The heating body 100 cools the heating net 160 after the heat pressing treatment to room temperature, and bonds the cooled heating net 160 to the porous substrate 140 by the heat conductive glue, which can make the bonding process of the heating body 100 at room temperature, and the operator can complete the whole bonding process more safely and conveniently, and facilitate the molding of the heating body 100. Compared with the traditional bonding process of the heating body 100 by high temperature sintering, the heating body 100 in the embodiment does not need to go through high temperature sintering, which meets the manufacturing concept of low carbon and environmental protection.

[0077] Further, in order to realize the electrical conduction of the heating net 160, a preferred embodiment is as shown in Figures 1-6 and Figure 9 The manufacturing method of the heating body 100 further includes the following steps:

[0078] Step S170: providing a power supply assembly and a conductor.

[0079] Step S180: welding the conductor on the heating net 160, and making the conductor electrically connected with the power supply assembly, or smearing the conductive silver glue between the heating net 160 and the conductor, so as to make the conductor electrically connected with the power supply assembly. Specifically, in one of the embodiments, the conductor is welded on the heating body 100, and the conductor is electrically connected with the power supply assembly, so that the power supply assembly can integrate the current on the conductor, and transmit the current to the heating net 160 through the conductor, realize the electrical conduction of the heating net 160, generate heat on the heating net 160, and atomize the tobacco oil permeated in the porous substrate 140. In another embodiment, the conductive silver glue is uniformly smeared on the surface of the heating net 160 and the conductor matched with the heating net 160, and the conductor is electrically connected with the power supply assembly, so that the power supply assembly can integrate the current on the conductor, and transmit the current to the heating net 160 through the conductor, realize the electrical conduction of the heating net 160, generate heat on the heating net 160, and atomize the tobacco oil permeated in the porous substrate 140.

[0080] In addition, as shown in Figures 3-6As shown, the present invention also provides a heating element 100, which is obtained by the manufacturing method of the heating element 100 of any of the above technical solutions. The heating element 100 includes a porous matrix 140 and a heating net 160, and the heating net 160 is bonded to the porous matrix 140 by a thermally conductive adhesive. The heating net 160 is formed by mixing the second heating wire 120 and the composite wire 150, and the composite wire 150 is formed by mixing the first heating wire 110 and the polymer yarn 130. The heating net 160 before cutting has a plurality of first through holes 161 and overlapping points 162, and the overlapping points 162 are located at the position where the composite wire 150 and the second heating wire 120 overlap. The heating net 160 after cutting has a plurality of second through holes 163, the opening of the second through hole 163 is greater than or equal to the opening of the first through hole 161, and the edges of the second through hole 163 are evenly distributed with a plurality of overlapping points 162.

[0081] In the aforementioned heating element 100, the opening of the second through-hole 163 is greater than or equal to the opening of the first through-hole 161. This increases the resistance of the heating mesh 160 while ensuring the mesh size of the heating mesh 160, thereby increasing the heating output of the heating mesh 160. The heating mesh 160 is subjected to a heat pressing treatment. This, on the one hand, causes the polymer yarn 130 to be thermally deformed and melted onto the first heating wire 110 and / or the second heating wire 120, significantly enhancing the strength of the intersections 162. The multiple intersections 162 evenly distributed around the edges of the second through-hole 163 reinforce the edge structure of the heating mesh 160, improving its structural stability and preventing undesirable phenomena such as loosening and cracking during prolonged use. Furthermore, the heat pressing treatment reduces the thickness of the heating mesh 160, satisfying the spatial arrangement requirements of the heating element 100 in electronic cigarettes, and also increases its resistance, meeting the heating output requirements of electronic cigarettes. The molding process is simple, making it suitable for electronic cigarettes.

[0082] And, as Figures 3-6 As shown, the present invention also provides an electronic cigarette, which includes the heating element 100 of the above technical solution, and also includes a housing and a power supply assembly. The power supply assembly is fixed to the housing by means of snap-fitting, embedding, etc., thereby achieving the installation and fixation of the power supply assembly. An atomization chamber is defined within the housing, and the heating element 100 is fixed within the atomization chamber by means of snap-fitting, embedding, etc., and the heating element 100 is electrically connected to the power supply assembly.

[0083] The electronic cigarette fixes the heating body 100 in the atomization cavity, and the heating body 100 is electrically connected with the power supply assembly. The heating body 100 is powered by the power supply assembly to generate heat to atomize the tobacco tar for the user to smoke. The structure of the heating net 160 of the electronic cigarette is stable, and the first heating wire 110 and the second heating wire 120 are particularly suitable for being woven into the shape. The thickness of the heating net 160 is thin, the resistance value is large, the forming process is simple, the heating net 160 in the mesh structure is heated, and the tobacco tar and the smoke are beneficial to pass through.

[0084] In order to make the heating net 160 in the electronic cigarette heat, a preferred embodiment is shown in Figures 3-6 The electronic cigarette further includes a conductive body. One end of the conductive body is welded or glued to the heating body 100, and the other end of the conductive body is electrically connected with the power supply assembly. In one embodiment, one end of the conductive body is welded to the heating body 100, and the other end of the conductive body is electrically connected with the power supply assembly. The power supply assembly can integrate the current on the conductive body and transmit it to the heating body 100 through the conductive body to realize the electrical conduction of the heating net 160. The heating net 160 can heat and atomize the tobacco tar permeated in the porous matrix 140. The atomized tobacco tar flows in the electronic cigarette for the user to smoke. In another embodiment, one end of the conductive body is glued to the heating body 100 by conductive silver glue, and the other end of the conductive body is electrically connected with the power supply assembly. The power supply assembly can integrate the current on the conductive body and transmit it to the heating body 100 through the conductive body to realize the electrical conduction of the heating net 160. The heating net 160 can heat and atomize the tobacco tar permeated in the porous matrix 140. The atomized tobacco tar flows in the electronic cigarette for the user to smoke.

[0085] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0086] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A method of manufacturing a heat generating body, characterized by, The method comprises the following steps: S110, providing a first heating wire, a second heating wire, a polymer yarn and a porous base; S120, mixing the first heating wire and the polymer yarn to form a composite wire, the first heating wire accounting for 10%-50% in the composite wire; S130, mixing the second heating wire and the composite wire to form a mesh structure to obtain a heating mesh, the heating mesh having a plurality of first through holes and a plurality of overlapping points, the overlapping points being located at positions where the composite wire and the second heating wire overlap; S140, cutting the heating mesh to form a plurality of second through holes in the heating mesh, the opening of the second through hole being greater than or equal to the opening of the first through hole, and the edges of the second through hole uniformly distributing a plurality of overlapping points; S150, heat pressing the heating mesh; S160, fixing the heating mesh on the porous base to form a heating body; The execution sequence of the steps S140 and S150 can be exchanged.

2. The method of manufacturing a heat generating body according to claim 1, wherein The step S120 specifically comprises: The polymer yarn is bonded or wound on the first heating wire to form a composite wire.

3. The method of manufacturing a heat-generating body according to claim 1, wherein The step S130 specifically comprises: The composite wire is bonded or wound on the second heating wire to form a mesh structure to obtain a heating mesh.

4. The method of manufacturing a heat generating body according to claim 1, wherein Before the step S120, it further comprises: S111, performing surface pretreatment on the first heating wire, the second heating wire and the polymer yarn.

5. The method of manufacturing a heat generating body according to claim 1, wherein The step S150 specifically comprises: The heating mesh is placed in a heat press to perform heat pressing treatment, and the pressure is maintained at 10-20 MPa.

6. The method of manufacturing a heat generating body according to claim 1, wherein The first heating wire is one or more of stainless steel wire, nickel wire or iron-chromium-aluminum wire, the second heating wire is one or more of stainless steel wire, nickel wire or iron-chromium-aluminum wire, and the polymer yarn is one or more of polyester or resin.

7. The method of manufacturing a heat generating body according to claim 1, wherein The mesh number of the heating mesh after cutting treatment is 100-500 meshes, and the thickness of the heating mesh after heat pressing treatment is 30-100 μm.

8. The method of manufacturing a heat generating body according to claim 1, wherein The step S160 specifically comprises: S161, the heating mesh after heat pressing treatment is cooled to room temperature in a natural environment; S162, the cooled heating mesh is bonded on the porous base by heat-conducting adhesive.

9. The method of manufacturing a heat-generating body according to claim 1, wherein It further comprises the following steps: S170, providing a power supply assembly and a conductor; S180, welding the conductor on the heating mesh, and electrically connecting the conductor with the power supply assembly, or applying conductive silver paste between the heating mesh and the conductor, and electrically connecting the conductor with the power supply assembly.

10. A heat generating body, characterized by comprising: The heating body is obtained by the method for manufacturing the heating body according to any one of claims 1-9, and comprises a porous base and a heating net bonded to the porous base, the heating net is formed by mixing second heating wires and composite wires, the composite wires are formed by mixing first heating wires and polymer yarns, the heating net before cutting treatment has a plurality of first through holes and a plurality of overlapping points, the overlapping points are located at positions where the composite wires and the second heating wires overlap, and the heating net after cutting treatment has a plurality of second through holes, the opening of the second through holes is greater than or equal to the opening of the first through holes, and the edges of the second through holes are uniformly distributed with a plurality of overlapping points.

11. An electronic cigarette, characterized in that The electronic cigarette comprises the heating body according to claim 10, and further comprises a shell and a power supply assembly, the power supply assembly is fixed to the shell, an atomization cavity is formed in the shell, the heating body is fixed in the atomization cavity and electrically connected with the power supply assembly.

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