阅读说明：本技术 红外加热体及其制备方法、加热烟具 (Infrared heating body, preparation method thereof and heating smoking set ) 是由 于杰 李振伟 林梓家 苑甫 王恩哥 于 2021-08-25 设计创作，主要内容包括：本申请提供一种红外加热体及其制备方法、加热烟具,涉及不燃烧电子烟技术领域。红外加热体的内部具有用于放置烟草的内置空间,内置空间为柱状,红外加热体包括由内到外设置的加热膜、基体和保温封装外壳；基体的内表面具有绝缘层,绝缘层的表面固定有电极,加热膜与电极连接。其中,基体为金属基体；或者,基体为陶瓷基体,绝缘层为玻纤层。其能够改善现有加热体容易受热不均的问题。(The application provides an infrared heating body, a preparation method thereof and a heating smoking set, and relates to the technical field of non-combustible electronic cigarettes. The infrared heating body is internally provided with a built-in space for placing tobacco, the built-in space is columnar, and the infrared heating body comprises a heating film, a substrate and a heat-preservation packaging shell which are arranged from inside to outside; the inner surface of the substrate is provided with an insulating layer, the surface of the insulating layer is fixed with an electrode, and the heating film is connected with the electrode. Wherein the substrate is a metal substrate; or the substrate is a ceramic substrate, and the insulating layer is a glass fiber layer. It can improve the uneven problem of current heating member easy to be heated.)

1. An infrared heating body is characterized in that a built-in space for placing tobacco is arranged inside the infrared heating body, the built-in space is columnar, and the infrared heating body comprises a heating film, a base body and a heat preservation packaging shell which are arranged from inside to outside; the inner surface of the substrate is provided with an insulating layer, the surface of the insulating layer is fixed with an electrode, and the heating film is connected with the electrode;

wherein the substrate is a metal substrate; or the substrate is a ceramic substrate, and the insulating layer is a glass fiber layer.

2. The infrared heating body of claim 1, wherein the heating film comprises at least one of a carbon fiber film, a graphene film, and a nichrome film.

3. The infrared heating body as set forth in claim 2, wherein the carbon fibers in the carbon fiber film have a diameter of 10 to 10000 nm.

4. The infrared heating body as set forth in any one of claims 1 to 3, wherein the electrode is welded, bonded or interposed with the heating film.

5. The infrared heating body as set forth in any one of claims 1 to 3, wherein the heating film is connected to the insulating layer and the electrode through a conductive adhesive layer.

6. The infrared heating body as set forth in any one of claims 1 to 3, wherein the heating film has a cylindrical shape.

7. The infrared heating body as set forth in any one of claims 1 to 3, wherein the heating film has a notch extending in a predetermined direction, the notch extending to an edge of the heating film, the predetermined direction being parallel to an axial direction of the base.

8. A heating smoking set, characterized in that, the heating smoking set comprises a battery and the infrared heating body of any one of claims 1 to 7, and the electrodes are connected with the positive electrode and the negative electrode of the battery.

9. A preparation method of an infrared heating body is characterized by comprising the following steps:

performing surface treatment on one surface of a metal substrate to form an insulating layer;

connecting the electrode with the heating film and the insulating layer respectively to obtain a plate body;

carrying out rolling treatment on the plate body and enabling the heating film to be on the inner layer to obtain a heating body;

and fixing the heating element in the heat-preservation packaging shell to obtain the infrared heating element.

10. A preparation method of an infrared heating body is characterized by comprising the following steps:

respectively connecting the electrodes with the heating film and the glass fiber layer to obtain a plate body;

carrying out rolling treatment on the plate body and enabling the heating film to be on the inner layer;

forming a ceramic substrate on the other surface of the glass fiber layer to obtain a heating element;

and fixing the heating element in the heat-preservation packaging shell to obtain the infrared heating element.

Technical Field

The application relates to the technical field of non-combustible electronic cigarettes, in particular to an infrared heating body, a preparation method of the infrared heating body and a heating smoking set.

Background

The electronic cigarette is not burnt, the tobacco is heated in a low-temperature baking mode, and compared with a traditional mode of directly igniting the tobacco for smoking, the mode can effectively reduce the generation of harmful ingredients. The electronic cigarette can change nicotine in tobacco into steam to be separated out when the electronic cigarette is not combusted, the tobacco is not combusted, no smoke ash exists, the tar content generated by baking is low, and the harm of second-hand smoke to human bodies can be effectively reduced.

The existing non-combustion electronic cigarette in the market mostly takes a ceramic sheet heating element as a main part, and tobacco is easily heated unevenly under the heating element, so that the smell and the taste of the heated tobacco are difficult to keep consistent.

Disclosure of Invention

The embodiment of the application provides an infrared heating body, a preparation method thereof and a heating smoking set, which can solve the problem that the existing heating body is easily heated unevenly.

The embodiment of the application is realized as follows:

in a first aspect, an embodiment of the application provides an infrared heating body, a built-in space for placing tobacco is arranged inside the infrared heating body, the built-in space is columnar, and the infrared heating body comprises a heating film, a base body and a heat preservation packaging shell which are arranged from inside to outside; the inner surface of the substrate is provided with an insulating layer, the surface of the insulating layer is fixed with an electrode, and the heating film is connected with the electrode.

Wherein the substrate is a metal substrate; or the substrate is a ceramic substrate, and the insulating layer is a glass fiber layer.

In the technical scheme, the base body is mainly used as a support, when the base body is a metal base body, the metal base body is insulated from the electrode through the insulating layer on the inner surface of the metal base body, and when the base body is manufactured, the metal base body and the heating film are easily processed together to form a cylinder shape due to good flexibility of the metal base body; when adopting the ceramic base member, the fine layer of glass can regard as the basement, when the preparation, processes the fine layer of glass with the heating film together through the fine layer of glass and forms the tube-shape with the fine layer of glass, conveniently forms the ceramic base member of tube-shape on the surface of one side on the fine layer of glass to make the electrode be located the internal surface on fine layer of glass. When the infrared heating body works, current is introduced into the heating film through the electrodes, the heating film can emit infrared radiation, and the heat-insulating packaging shell can reduce the heat loss of the infrared radiation. The inside of infrared heating body has the built-in space that is used for placing the tobacco, and the inlayer of infrared heating body is the heating film, then the tobacco can be arranged in built-in space, with heating film direct contact, the heating film can wrap up the tobacco and directly heat the tobacco to can improve the homogeneity of heating. The metal matrix and the ceramic matrix both have excellent high-temperature resistance, and normal work of the infrared heating body can be guaranteed when the infrared heating body is used for heating.

In one possible embodiment, the heating film includes at least one of a carbon fiber film, a graphene film, and a nichrome film.

In the technical scheme, the carbon fiber film, the graphene film and the nickel-chromium alloy film have good conductivity and infrared emissivity, and the infrared heating body has good heating and baking effects due to the heating film formed by at least one of the carbon fiber film, the graphene film and the nickel-chromium alloy film.

In one possible embodiment, the carbon fibers in the carbon fiber membrane have a diameter of 10 to 10000 nm.

In the technical scheme, the carbon fiber has a small diameter and a large surface area, so that the built carbon fiber film has a large infrared radiation area and can enhance the infrared radiation baking effect.

In one possible embodiment, the electrodes are welded, glued or inserted into the heating film.

In one possible embodiment, the heating film is connected with the insulating layer and the electrode through a conductive adhesive layer.

In the technical scheme, the electrode is connected with the heating film through the conductive adhesive layer, the conductive adhesive layer can construct a conductive path between the electrode and the carbon fiber layer, the insulating layer is connected with the heating film through the conductive adhesive layer, the heating film can be stably fixed on the insulating layer, and the stability of the heating film when the tobacco is inserted into the built-in space can be improved. In addition, the conductive adhesive layer can also improve the infrared radiation effect of the infrared heating body and enhance the infrared radiation baking effect.

In a possible embodiment, the material of the thermal insulation packaging shell is any one of quartz, alumina, magnesia, ceramic, stainless steel, aluminum, iron, copper, polyimide, polytetrafluoroethylene and polyether ether ketone.

In the technical scheme, quartz, alumina, magnesia, ceramic, stainless steel, aluminum, iron, copper, polyimide, polytetrafluoroethylene and polyether-ether-ketone all have good heat preservation and insulation effects.

In one possible embodiment, the heating film is cylindrical.

In the technical scheme, the cylindrical heating film can wrap the tobacco more comprehensively, so that the tobacco can be baked more uniformly.

In a possible embodiment, the heating film has a notch extending in a predetermined direction, the notch extending to an edge of the heating film, the predetermined direction being parallel to the axial direction of the substrate.

In the above technical solution, when the electrode is connected to the battery, the heating film with such a structure is equivalent to that the electrode is connected to the battery in series.

In a second aspect, an embodiment of the present application provides a heating smoking set, where the heating smoking set includes a battery and the infrared heating body of the embodiment of the first aspect, and electrodes are connected to a positive electrode and a negative electrode of the battery.

In the technical scheme, the battery supplies power to the electrode, the electrode introduces current into the heating film, the heating film can emit infrared radiation, and the heat-insulating packaging shell can reduce the heat loss of the infrared radiation. The inside of infrared heating body has the built-in space that is used for placing the tobacco, and the inlayer of infrared heating body is the heating film, then the tobacco can be arranged in built-in space, with heating film direct contact, the heating film can wrap up the tobacco and directly heat the tobacco to can improve the homogeneity of heating.

In a third aspect, an embodiment of the present application provides a method for preparing an infrared heating body, including:

performing surface treatment on one surface of a metal substrate to form an insulating layer;

respectively connecting the electrodes with the heating film and the insulating layer to obtain a plate body;

rolling the plate body and enabling the heating film to be on the inner layer to obtain a heating body;

and fixing the heating element in the heat-preservation packaging shell to obtain the infrared heating element.

In the above technical solution, the surface of the metal substrate is treated to form the insulating layer, the insulating layer can insulate the electrode from the metal base, the metal substrate is formed into a cylindrical metal base after the plate body is subjected to the rolling treatment, and the heating film is located inside the metal base. Since the metal substrate has good flexibility, it is easily processed together with the heating film to form a cylindrical shape. The current can be introduced into the heating film through the electrodes, the heating film can emit infrared radiation, and the heat-insulating packaging shell can reduce the heat loss of the infrared radiation. During the use, arrange the tobacco in the built-in space that is used for placing the tobacco, tobacco and heating film direct contact, heating film can wrap up the tobacco and directly heat the tobacco to can improve the homogeneity of heating.

In a fourth aspect, an embodiment of the present application provides a method for preparing an infrared heating body, including:

respectively connecting the electrodes with the heating film and the glass fiber layer to obtain a plate body;

carrying out rolling treatment on the plate body and enabling the heating film to be arranged on the inner layer;

forming a matrix on the other surface of the glass fiber layer to obtain a heating element;

and fixing the heating element in the heat-preservation packaging shell to obtain the infrared heating element.

In the technical scheme, the glass fiber layer is used as a substrate and is processed together with the heating film to form the glass fiber layer into a cylindrical shape, and then the cylindrical ceramic substrate is formed on the other surface of the glass fiber layer. During operation, the current can be introduced into the heating film through the electrodes, the heating film can emit infrared radiation, and the heat-insulating packaging shell can reduce the heat loss of the infrared radiation. During the use, arrange the tobacco in the built-in space that is used for placing the tobacco, tobacco and heating film direct contact, heating film can wrap up the tobacco and directly heat the tobacco to can improve the homogeneity of heating.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural view of an infrared heating body according to an embodiment of the present application;

fig. 2 is a schematic structural view of another infrared heating body according to an embodiment of the present application;

FIG. 3 is a schematic structural view of another infrared heating body according to an embodiment of the present application;

FIG. 4 is a schematic view of an arrangement of electrodes according to an embodiment of the present application;

FIG. 5 is a schematic view of another arrangement of electrodes according to an embodiment of the present application;

FIG. 6 is a schematic view of another arrangement of electrodes according to an embodiment of the present application;

fig. 7 is a schematic structural view of a heating smoking set according to an embodiment of the present application.

Icon: 20-heating the smoking set; 10-infrared heating body; 11-a substrate; 111-an insulating layer; 12-an electrode; 13-heating the film; 14-insulating packaging shell; 15-built-in space; 16-tobacco.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The embodiment of the application provides an infrared heating body 10, referring to fig. 1-3, a built-in space 15 for placing tobacco 16 is arranged inside the infrared heating body 10, the built-in space 15 is columnar, and the infrared heating body 10 comprises a heating film 13, a base body 11 and a heat preservation packaging shell 14 which are arranged from inside to outside; the inner surface of the substrate 11 has an insulating layer 111, an electrode 12 is fixed to the surface of the insulating layer 111, and the heating film 13 is connected to the electrode 12.

When the infrared heating body 10 works, current is introduced into the heating film 13 through the electrode 12, the heating film 13 can emit infrared radiation, and the heat-insulating packaging shell 14 can reduce heat loss of the infrared radiation.

Optionally, the material of the thermal insulation package casing 14 is any one of quartz, alumina, magnesia, ceramic, stainless steel, aluminum, iron, copper, polyimide, polytetrafluoroethylene, and polyetheretherketone. The heat-preservation packaging shell 14 made of the materials has good heat-preservation and heat-insulation effects. Illustratively, the length of the thermal insulation packaging shell 14 is 5-200 mm, the inner diameter is 2-25 mm, and the outer diameter is 3-30 mm. The wall of the thermal insulation packaging shell 14 may be a compact type, or a vacuum wall formed by a plurality of layers of pipes, or the wall has a hole structure.

The infrared heating body 10 is provided with a built-in space 15 for placing the tobacco 16, the innermost layer of the infrared heating body 10 is the heating film 13, the tobacco 16 can be placed in the built-in space 15 and directly contacted with the heating film 13, and the heating film 13 can wrap the tobacco 16 to directly heat the tobacco 16, so that the heating uniformity can be improved.

Wherein, the substrate 11 is a metal substrate; alternatively, the substrate 11 is a ceramic substrate and the insulating layer 111 is a glass fiber layer.

The metal matrix and the ceramic matrix both have excellent high temperature resistance, and can ensure normal work when the infrared heating body 10 is heated, and the insulating layer 111 can avoid short circuit in the heating process of the infrared heating body.

When the substrate 11 is a metal substrate, the metal substrate is insulated from the electrode 12 by the insulating layer 111 on the inner surface of the metal substrate, and the metal substrate is easily processed into a cylindrical shape together with the heating film 13 because of its good flexibility in manufacturing.

Illustratively, the material of the metal matrix includes at least one of nickel, copper, iron, aluminum and zinc. The materials have high strength and can provide good support, and the metal matrix formed by the materials has good flexibility and can be easily processed into a cylinder shape. Optionally, the metal matrix has a thickness of 5 to 5000 μm, for example, 5 μm, 10 μm, 50 μm, 100 μm, 300 μm, 500 μm, 800 μm, 1000 μm, 3000 μm and 5000 μm or a range between any two.

When adopting the ceramic base member, the glass fiber layer can be as the basement, and when making, process together with heating film 13 through the glass fiber layer and form the tube-shape with the glass fiber layer, then conveniently form the base member of tube-shape on one side surface on the glass fiber layer to make electrode 12 be located the internal surface on glass fiber layer. If the glass fiber layer is not provided, the cylindrical ceramic substrate needs to be manufactured first, and then the electrode 12 is formed on the inner surface of the ceramic substrate, which is very inconvenient in the operation process.

Further, the electrode 12 is welded, bonded, or interposed with the heating film 13. Here, the insertion connection means that the electrodes 12 are inserted through both surfaces of the heating film 13.

In one embodiment, the heating film 13 is connected to the insulating layer 111 and the electrode 12 through a conductive adhesive layer.

The electrode 12 and the heating film 13 are connected by the conductive adhesive layer, the conductive adhesive layer can construct a conductive path between the electrode 12 and the carbon fiber layer, the insulating layer 111 and the heating film 13 are connected by the conductive adhesive layer, the heating film 13 can be stably fixed to the insulating layer 111, and the stability of the heating film 13 when the tobacco 16 is inserted into the built-in space 15 can be improved. In addition, the conductive adhesive layer can also improve the infrared radiation effect of the infrared heating body 10 and enhance the infrared radiation baking effect.

Optionally, the material of the electrode 12 includes at least one of gold, silver, platinum, nickel, copper, iron, aluminum, and zinc. Wherein, the number of the electrodes 12 is 2 or 3 optionally, the length of the electrodes 12 is 6-150 mm, and the width is 0.1-10 mm. For example, the length of the electrode 12 is any one of 6mm, 20mm, 50mm, 80mm, 100mm, 120mm, and 150mm or a range between any two, and the width of the electrode 12 is 0.1mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10 mm.

The electrode 12 may be formed on the surface of the insulating layer 111 by one or a combination of several methods of metal paste printing, electroplating, chemical plating, vacuum evaporation, and screen printing.

Alternatively, the electrode 12 may be connected to the battery in series or in parallel, and when the heating film 13 has a cylindrical shape, the electrode 12 is connected to the battery to form a parallel circuit. Further, when the film 13 is heated, the cylindrical heating film 13 can wrap the tobacco 16 relatively completely, and can more uniformly bake the tobacco 16.

Illustratively, in some embodiments, the heating film 13 has a notch extending in a predetermined direction, the notch extending to an edge of the heating film 13, the predetermined direction being parallel to the axial direction of the substrate 11. In the heating film 13 having such a structure, when the electrode 12 is connected to the battery, the electrode 12 is connected to the battery in series.

Optionally, the substrate of the conductive adhesive layer includes at least one of epoxy resin, polyurethane, polyamic acid, polytetrafluoroethylene, polyetheretherketone, and phenolic resin. Optionally, the conductive filler in the conductive adhesive layer includes at least one of carbon black, acetylene black, carbon fiber, carbon tube, graphene sheet, and three-dimensional graphene.

The conductive paste can be coated on the surface of the insulating layer 111 by spraying, dipping, brushing or blade coating, and dried to obtain the conductive adhesive layer.

In addition, the heating film 13 may be coated on the conductive paste liquid film on the surface of the insulating layer 111 by natural adhesion, molding, or the like, and the conductive paste may be dried to form a conductive adhesive layer, so that the heating film 13 is formed on the surface of the conductive adhesive layer, and the heating film 13 is connected to the electrode 12. The drying may be, for example, natural drying, freeze drying or heat drying.

In some embodiments, the heating film 13 includes at least one of a carbon fiber film, a graphene film, and a nichrome film.

The carbon fiber film, the graphene film and the nickel-chromium alloy film have good conductivity and infrared emissivity, and the infrared heating body 10 has good heating and baking effects due to the heating film 13 formed by at least one of the carbon fiber film, the graphene film and the nickel-chromium alloy film. Compared with a graphene film, the carbon fiber film has more conductive networks and has a better infrared heating effect.

Illustratively, the diameter of the carbon fibers in the carbon fiber film is 10 to 10000 nm.

The carbon fiber has a small diameter and a large surface area, so that the carbon fiber film has a large infrared radiation area and can enhance the infrared radiation baking effect.

The embodiment of the present application also provides a method for manufacturing the infrared heating body 10, wherein when the substrate 11 is a metal substrate and a substrate, respectively, the manufacturing steps are slightly different, and they are described below.

When the substrate 11 is a metal substrate, the infrared heating body 10 is prepared by the following steps:

performing surface treatment on one surface of a metal substrate to form an insulating layer 111;

respectively connecting the electrode 12 with the heating film 13 and the insulating layer 111 to obtain a plate body;

rolling the plate body and enabling the heating film 13 to be on the inner layer to obtain a heating body;

and fixing the heating element in the heat-preservation packaging shell 14 to obtain the infrared heating body 10.

The insulating layer 111 is formed by performing surface treatment on the surface of the metal substrate, the insulating layer 111 can insulate the electrode 12 from the metal base, the metal substrate is formed into a cylindrical metal base after the plate body is subjected to rolling treatment, and the heating film 13 is located inside the metal base. Since the metal base has good flexibility, it is easily processed into a cylindrical shape together with the heating film 13. The electrode 12 can introduce current into the heating film 13, the heating film 13 can emit infrared radiation, and the heat-insulating packaging shell 14 can reduce heat loss of the infrared radiation. When the tobacco heating device is used, the tobacco 16 is placed in the built-in space 15 for placing the tobacco, the tobacco 16 is in direct contact with the heating film 13, and the heating film 13 can wrap the tobacco 16 to directly heat the tobacco 16, so that the heating uniformity can be improved.

Optionally, the surface treatment of the metal substrate includes one or more of anodic oxidation, chemical reaction, coating of the insulating layer 111, or sand blasting. Wherein the metal oxide can be formed by anodic oxidation, the metal oxide being insulating.

In some embodiments, the electrode 12 (see fig. 4-6) may be selectively formed on the surface of the insulating layer 111, and the heating film 13 is fixed on the surface of the insulating layer 111, so that the heating film 13 is connected to the electrode 12 and the insulating layer 111, thereby obtaining a plate body.

In other embodiments, the electrode 12 and the heating film 13 may be fixed first, and the electrode 12 and the insulating layer 111 may be connected, for example, welded.

When the substrate 11 is a ceramic substrate, the preparation steps of the infrared heating body 10 include:

the plate body is subjected to rolling treatment, and a heating film 13 is arranged on the inner layer;

respectively connecting the electrode 12 with the heating film 13 and the glass fiber layer to obtain a plate body;

forming a matrix on the other surface of the glass fiber layer to obtain a heating element;

and fixing the heating element in the heat-preservation packaging shell 14 to obtain the infrared heating body 10.

It is easy to handle to process the glass fiber layer as a substrate together with the heating film 13 to form the glass fiber layer into a cylindrical shape and then form the cylindrical ceramic substrate on the other surface of the glass fiber layer. During operation, the electrode 12 can introduce current into the heating film 13, the heating film 13 can emit infrared radiation, and the heat-insulating packaging shell 14 can reduce heat loss of the infrared radiation. When the tobacco heating device is used, the tobacco 16 is placed in the built-in space 15 for placing the tobacco 16, the tobacco 16 is in direct contact with the heating film 13, and the heating film 13 can wrap the tobacco 16 to directly heat the tobacco 16, so that the heating uniformity can be improved.

Since the ceramic substrate does not have flexibility, if the glass fiber layer is not provided, the cylindrical ceramic substrate needs to be manufactured first, and then the electrode 12 is formed on the inner surface of the ceramic substrate, which is very inconvenient in the operation process.

In some embodiments, an electrode 12 (refer to fig. 4-6) may be formed on one surface of the glass fiber layer, and the heating film 13 is fixed on the surface of the glass fiber layer having the electrode 12, so that the heating film 13 is connected with the electrode 12 and the glass fiber layer, thereby obtaining the plate body.

In other embodiments, the electrode 12 may be first connected and fixed to the heating film 13, and the electrode 12 may be connected to the glass fiber layer by, for example, welding.

In the above two manufacturing methods, the electrodes 12 formed on the surface of the insulating layer 111 of the metal substrate or on the surface of the glass fiber layer may be at opposite side edges of the surface of the insulating layer 111 or the surface of the glass fiber layer, or at both side edges and the middle position.

The embodiment of the present application further provides a heating smoking set 20 (refer to fig. 7), the heating smoking set 20 includes a battery and the above infrared heating body 10, and the electrode 12 is connected to the positive electrode and the negative electrode of the battery.

The electrode 12 is powered by the battery, the electrode 12 introduces current into the heating film 13, the heating film 13 can emit infrared radiation, and the heat-insulating packaging shell 14 can reduce the heat loss of the infrared radiation. When the tobacco heating device is used, the tobacco 16 is placed in the built-in space 15 for placing the tobacco, the tobacco 16 is in direct contact with the heating film 13, and the heating film 13 can wrap the tobacco 16 to directly heat the tobacco 16, so that the heating uniformity can be improved.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.