High-temperature-resistant electric heating film

Abstract

The utility model relates to the technical field of electric heating films, and discloses a high-temperature-resistant electric heating film which comprises a planar heating body, current capacitance absorption layers are fixedly arranged on the upper end face and the lower end face of the planar heating body respectively, and protective layer mechanisms are fixedly arranged on the end faces of the opposite sides of the two current capacitance absorption layers respectively. The two protection layer mechanisms comprise two wear-resistant layers, two polyester film layers, two carbon fiber layers and two copper film layers, the two current capacitance absorption layers comprise two absorption layer bodies and four connecting pieces, and edge strips are fixedly arranged at the positions, close to the front sides and the rear sides, of the upper end faces and the lower end faces of the two absorption layer bodies. According to the electric heating film, the protective layer mechanism is composed of the wear-resistant layer, the polyester film layer, the carbon fiber layer and the copper film layer, the wear resistance of the surface of the protective layer is improved through the wear-resistant layer, and the polyester film layer, the carbon fiber layer and the copper film layer are matched, so that the electric heating film is higher in high temperature resistance and longer in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating films, in particular to a high-temperature resistant electric heating film. Background Art

[0002] An electric heating film is a film made of a conductive material through the principle of resistance heating and is used for heating equipment and devices. Electric heating films are usually made of materials with good electrical conductivity, such as copper, nickel-chromium alloy, carbon nanotubes, etc. When an electric current flows through the surface of the conductive film, a Joule heating effect is generated, causing the film itself to heat up.

[0003] Most of the existing heating films have a single-layer design on the surface layer. However, the function of the single surface layer is too single, resulting in poor high-temperature resistance, thereby reducing the overall service life of the electric heating film. Therefore, the utility model provides a high-temperature resistant electric heating film to solve the problems raised in the above background art. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a high-temperature resistant electric heating film is proposed. The electric heating film is composed of two protective layers, two current capacitance absorption layers and a planar heating element. The protective layer is composed of a wear-resistant layer, a polyester film layer, a carbon fiber layer and a copper film layer, so that the protective layer has higher high-temperature resistance and stronger wear resistance, and the service life of the electric heating film is higher.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a high-temperature resistant electric heating film, including a planar heating element, current capacitance absorption layers are fixedly arranged on the upper and lower end faces of the planar heating element, and protective layer mechanisms are fixedly arranged on the end faces on the opposite sides of the two current capacitance absorption layers;

[0006] The two protective layer mechanisms include two wear-resistant layers, two polyester film layers, two carbon fiber layers and two copper film layers;

[0007] The two current capacitance absorption layers include two absorption layer bodies and four connecting pieces. Edge strips are fixedly arranged on the front and rear positions of the upper and lower end faces of the two absorption layer bodies;

[0008] The planar heating element includes a substrate and a plurality of heating rods. Connecting rods are fixedly arranged on the front and rear positions of the upper and lower end faces of the substrate;

[0009] Through the above technical solution, the electric heating film is composed of two protective layers, two current capacitance absorption layers and a planar heating element. The protective layer is composed of a wear-resistant layer, a polyester film layer, a carbon fiber layer and a copper film layer, which makes the protective layer have higher high-temperature resistance and stronger wear resistance, so that the service life of the electric heating film is longer. And the planar heating element is composed of a substrate, a connecting rod and a heating rod, which makes the heating effect of the planar heating element better and more convenient to use.

[0010] Further, the two wear-resistant layers are respectively fixedly arranged on the upper end faces of the two polyester film layers;

[0011] Through the above technical solution, the wear-resistant layer is made of alumina ceramics, which has excellent wear resistance, high-temperature resistance and chemical stability. The polyester film layer below the wear-resistant layer has good heat resistance and insulation performance.

[0012] Further, the two polyester film layers are respectively fixedly arranged on the upper end faces of the two carbon fiber layers;

[0013] Through the above technical solution, the carbon fiber layer below the polyester film layer is a fiber material composed of carbon atoms, which has extremely high strength and light weight characteristics. Carbon fiber is usually obtained by high-temperature carbonization of polymer matrices such as polypropylene, and finally forms a fibrous structure.

[0014] Further, the two carbon fiber layers are respectively fixedly arranged on the upper end faces of the two copper film layers;

[0015] Through the above technical solution, the copper film layer below the carbon fiber layer is a film made of copper material, which has good electrical conductivity, thermal conductivity and plasticity.

[0016] Further, grooves are formed on the end faces of the plurality of side strips away from one side of the two absorption layer bodies, and the four connecting pieces are respectively fixedly arranged on the upper end faces of the eight side strips;

[0017] Through the above technical solution, grooves are formed on the side strips, which makes the heat transfer effect of the side strips better. And through the connecting pieces on the side strips, they are respectively connected to the planar heating element below the upper protective layer mechanism, so that the current capacitance absorption layers can be used more separately.

[0018] Further, the plurality of heating rods are respectively fixedly arranged on the opposite end faces of the four connecting rods, and conductive sheets are fixedly arranged at one side positions near the upper end faces of two of the four connecting rods;

[0019] Through the above technical solution, the planar heating element conducts electricity to the connecting rod, and then transmits electric power to the heating rod, so that the heating rod starts to heat on the substrate, realizing the heating effect of the film. And through the conductive sheets on the connecting rod, they are connected to the external wires.

[0020] Further, one of the upper end faces of the two conductive sheets is fixedly provided with a positive electrode wire, and the other of the upper end faces of the two conductive sheets is fixedly provided with a negative electrode wire;

[0021] Through the above technical solution, the conductive sheet is connected to the external positive electrode wire and negative electrode wire, and then the positive electrode wire and negative electrode wire are connected to the external power supply to supply power to the electric heating film.

[0022] The utility model has the following beneficial effects:

[0023] 1. A high-temperature resistant electric heating film proposed by the utility model, the outer layer of the electric heating film is provided with a protective layer mechanism, the protective layer mechanism is composed of a wear-resistant layer, a polyester film layer, a carbon fiber layer and a copper film layer, the wear resistance of the surface of the protective layer is improved through the wear-resistant layer, and the high-temperature resistance of the electric heating film is higher due to the cooperation of the polyester film layer, the carbon fiber layer and the copper film layer, so that the practicability of the film is higher and the service life is longer.

[0024] 2. A high-temperature resistant electric heating film proposed by the utility model, the electric heating film is composed of two protective layer mechanisms, two current capacitance absorption layers and a planar heating element, the current capacitance absorption layer is provided with connection pieces and side strips, and the planar heating element is provided with connecting rods and heating rods. The planar heating element generates heat and then the heat is transmitted by the current capacitance absorption layer, making the electric heating film more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is an exploded axonometric schematic diagram of the utility model;

[0026] Figure 2 is a front sectional schematic diagram of the protective layer of the utility model;

[0027] Figure 3 is an axonometric schematic diagram of the current capacitance absorption layer of the utility model;

[0028] Figure 4 is an axonometric schematic diagram of the planar heating element of the utility model.

[0029] LEGEND DESCRIPTION:

[0030] 1. Protective layer mechanism; 2. Current capacitance absorption layer; 3. Planar heating element; 101. Wear-resistant layer; 102. Polyester film layer; 103. Carbon fiber layer; 104. Copper film layer; 201. Connection piece; 202. Absorption layer main body; 203. Side strip; 204. Groove; 301. Positive electrode wire; 302. Conductive sheet; 303. Connecting rod; 304. Heating rod; 305. Substrate; 306. Negative electrode wire. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0032] Referring to Figures 1-4 , an embodiment provided by the present utility model: a high-temperature resistant electric heating film, including a planar heating element 3, current capacitance absorption layers 2 are fixedly arranged on both the upper end face and the lower end face of the planar heating element 3, and protective layer mechanisms 1 are fixedly arranged on the end faces on the opposite sides of the two current capacitance absorption layers 2;

[0033] The two protective layer mechanisms 1 include two wear-resistant layers 101, two polyester film layers 102, two carbon fiber layers 103 and two copper film layers 104;

[0034] The electric heating film is composed of two protective layers, two current capacitance absorption layers 2 and a planar heating element 3. The protective layer is composed of a wear-resistant layer 101, a polyester film layer 102, a carbon fiber layer 103 and a copper film layer 104, so that the high-temperature resistance of the protective layer is higher and the wear resistance is stronger, making the service life of the electric heating film higher.

[0035] The two current capacitance absorption layers 2 include two absorption layer bodies 202 and four connecting pieces 201. Edge strips 203 are fixedly arranged on the front and rear positions of the upper end face and the lower end face of the two absorption layer bodies 202;

[0036] The planar heating element 3 includes a substrate 305 and a plurality of heating rods 304. Connecting rods 303 are fixedly arranged on the front and rear positions of the upper end face and the lower end face of the substrate 305;

[0037] The planar heating element 3 is composed of a substrate 305, connecting rods 303 and heating rods 304, so that the heating effect of the planar heating element 3 is better and it is more convenient to use.

[0038] The two wear-resistant layers 101 are respectively fixedly arranged on the upper end faces of the two polyester film layers 102, the two polyester film layers 102 are respectively fixedly arranged on the upper end faces of the two carbon fiber layers 103, and the two carbon fiber layers 103 are respectively fixedly arranged on the upper end faces of the two copper film layers 104;

[0039] The wear-resistant layer 101 is made of alumina ceramics, which has excellent wear resistance, high-temperature resistance, and chemical stability. The polyester film layer 102 below the wear-resistant layer 101 has good heat resistance and insulation properties. The carbon fiber layer 103 below the polyester film layer 102 is a fiber material composed of carbon atoms, which has extremely high strength and lightweight characteristics. Carbon fiber is usually obtained by high-temperature carbonization of polymer matrices such as polypropylene, and finally forms a fibrous structure. The copper film layer 104 below the carbon fiber layer 103 is a film made of copper material, which has good electrical conductivity, thermal conductivity, and plasticity.

[0040] Grooves 204 are provided on the end faces of multiple side strips 203 away from one side of the two absorber layer bodies 202. Four connecting pieces 201 are respectively fixedly arranged on the upper end faces of the eight side strips 203.

[0041] The side strip 203 is provided with a groove 204, which makes the heat transfer effect of the side strip 203 better. Moreover, the connecting pieces 201 on the side strip 203 are respectively connected to the planar heating element 3 below the upper protective layer mechanism 1, so that the current capacitance absorber layer 2 can be used more separately.

[0042] Multiple heating rods 304 are respectively fixedly arranged on the opposite end faces of the four connecting rods 303. On one side position of the upper end faces of two of the four connecting rods 303, conductive sheets 302 are respectively fixedly arranged. On the upper end face of one of the two conductive sheets 302, a positive wire 301 is fixedly arranged. On the upper end face of the other of the two conductive sheets 302, a negative wire 306 is fixedly arranged.

[0043] The planar heating element 3 conducts electricity to the connecting rods 303, and then transmits electric power to the heating rods 304, so that the heating rods 304 start to heat on the substrate 305, realizing the heating effect of the film. Moreover, the conductive sheets 302 on the connecting rods 303 are connected to external wires, and are connected to the external positive wire 301 and negative wire 306 through the conductive sheets 302, and then are connected to an external power supply through the positive wire 301 and negative wire 306 to supply power to the electric heating film.

[0044] Working principle: The electric heating film is composed of two protective layer mechanisms 1, two current capacitance absorber layers 2, and a planar heating element 3. The current capacitance absorber layer 2 is provided with connecting pieces 201 and side strips 203. The connecting rods 303 and heating rods 304 are arranged on the planar heating element 3. The planar heating element 3 generates heat and then is transmitted by the current capacitance absorber layer 2 for heating. The protective layer mechanism 1 is composed of a wear-resistant layer 101, a polyester film layer 102, a carbon fiber layer 103, and a copper film layer 104. The wear resistance of the surface of the protective layer is improved through the wear-resistant layer 101. Moreover, the cooperation of the polyester film layer 102, the carbon fiber layer 103, and the copper film layer 104 makes the electric heating film have higher high-temperature resistance, higher practicality, and longer service life.

[0045] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-temperature resistant electric heating film, comprising a planar heating element (3), characterized in that: Current capacitance absorption layers (2) are fixedly arranged on both the upper end face and the lower end face of the planar heating element (3), and protective layer mechanisms (1) are fixedly arranged on the end faces on the opposite sides of the two current capacitance absorption layers (2); The two protective layer mechanisms (1) include two wear-resistant layers (101), two polyester film layers (102), two carbon fiber layers (103) and two copper film layers (104); The two current capacitance absorption layers (2) include two absorption layer bodies (202) and four connecting pieces (201), and side strips (203) are fixedly arranged on the front side and the rear side positions of the upper end face and the lower end face of the two absorption layer bodies (202); The planar heating element (3) includes a substrate (305) and a plurality of heating rods (304), and connecting rods (303) are fixedly arranged on the front side and the rear side positions of the upper end face and the lower end face of the substrate (305).

2. The high-temperature resistant electrothermal film according to claim 1, characterized in that: The two wear-resistant layers (101) are respectively fixedly arranged on the upper end faces of the two polyester film layers (102).

3. The high-temperature resistant electric heating film according to claim 1, wherein: The two polyester film layers (102) are respectively fixedly arranged on the upper end faces of the two carbon fiber layers (103).

4. A high-temperature resistant electric heating film according to claim 1, characterized in that: The two carbon fiber layers (103) are respectively fixedly arranged on the upper end faces of the two copper film layers (104).

5. The high-temperature resistant electric heating film according to claim 1, wherein: Grooves (204) are formed in the end faces on the sides of the plurality of side strips (203) far away from the two absorption layer bodies (202), and the four connecting pieces (201) are respectively fixedly arranged on the upper end faces of the eight side strips (203).

6. The high-temperature resistant electric heating film according to claim 1, wherein: The plurality of heating rods (304) are respectively fixedly arranged on the end faces on the opposite sides of the four connecting rods (303), and conductive pieces (302) are fixedly arranged on the positions on one side of the upper end faces of two of the four connecting rods (303).

7. The high-temperature resistant electric heating film according to claim 6, wherein: A positive electrode wire (301) is fixedly arranged on the upper end face of one of the two conductive pieces (302), and a negative electrode wire (306) is fixedly arranged on the upper end face of the other of the two conductive pieces (302).

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