Electrothermal film mechanism for drying room

Abstract

The utility model relates to the technical field of electrothermal films, in particular to an electrothermal film mechanism for a drying room, which is characterized in that a high-temperature-resistant double-sided adhesive tape is arranged on an electrothermal film main body, the electrothermal film main body comprises a polyimide film, a graphene film, a top polyester film, an outer heating layer, an inner polyester film and an inner heating layer, and the inner heating layer comprises an inner conductive strip; the outer heating layer comprises an aluminum foil heating strip, a high-temperature-resistant elastic framework strip and an outer conductive strip; the beneficial effects are that only the outer conductive strip and the inner conductive strip are bent at the folding rotation position of the structure, the phenomenon of local overheating of the device caused by bending of the aluminum foil heating strip is avoided, meanwhile, the outermost side is covered with the polyimide film, the structure is endowed with good flame retardance through the polyimide film, and the service life of the structure is prolonged. Through the graphene film, uniform heating work can be realized, the phenomenon of local overheating on the electrothermal film main body can be avoided, the overall flame resistance of the structure is improved, the phenomenon of local overheating is avoided, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrothermal film technology, specifically to an electrothermal film mechanism for drying ovens. Background Technology

[0002] Electric heating film for drying ovens is a highly efficient heating element widely used in various drying and heating applications. It converts electrical energy into heat energy, providing uniform heat distribution within the drying oven, and offers advantages such as energy saving, environmental friendliness, and easy installation.

[0003] In the prior art, the electrothermal film consists of a heating layer, an insulating layer, and an adhesive layer.

[0004] However, traditional electric heating films often experience localized overheating at the bending points of the heating elements during use, resulting in poor heating performance and safety hazards. Therefore, this invention proposes an electric heating film mechanism for drying rooms to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an electric heating film mechanism for a drying oven to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electric heating film mechanism for a drying oven, comprising high-temperature resistant double-sided adhesive, wherein the high-temperature resistant double-sided adhesive is disposed on the electric heating film body, the electric heating film body comprising: a polyimide film, a graphene film, a top polyester film, an outer heating layer, an inner polyester film, and an inner heating layer, wherein the inner heating layer comprises an inner conductive strip;

[0007] The external heating layer includes an aluminum foil heating strip, a high-temperature resistant elastic skeleton strip, and an external conductive strip.

[0008] Preferably, the electrothermal film body is composed of a polyimide film, a graphene heat-equalizing layer, a bottom polyester film, an inner heating layer, an inner polyester film, an outer heating layer, a top polyester film, and a graphene film.

[0009] Preferably, the high-temperature resistant double-sided adhesive is connected to the graphene heat-equalizing layer, the graphene heat-equalizing layer is connected to the bottom polyester film, an inner heating layer is provided between the bottom polyester film and the inner polyester film, and a square plate-shaped high-temperature resistant elastic skeleton strip is provided in the inner heating layer, and the two sides of the high-temperature resistant elastic skeleton strip are respectively connected to the bottom polyester film and the inner polyester film.

[0010] Preferably, the polyimide film is connected to the graphene film, the graphene film is connected to the top polyester film, an outer heating layer is provided between the top polyester film and the inner polyester film, and a high-temperature resistant elastic skeleton strip is provided in the outer heating layer, with its two sides connected to the top polyester film and the inner polyester film respectively.

[0011] Preferably, the outer heating layer is disposed between the top polyester film and the inner polyester film, and the outer heating layer includes aluminum foil heating strips, which are square plate-shaped structures and are all connected to the outer conductive strips.

[0012] Preferably, the inner heating layer is disposed between the bottom polyester film and the inner polyester film. The bottom polyester film includes aluminum foil heating strips, all of which are connected to the inner conductive strip. A conductive block is fixedly connected to the inner conductive strip.

[0013] Preferably, the conductive block has a circular plate-like structure, and the conductive block is connected to the outer conductive strip through a circular hole in the inner polyester film.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention proposes an electric heating film mechanism for a drying oven. The high-temperature elastic skeleton strip enhances the structure's flexibility and provides support. Each aluminum foil heating strip is connected to the inner and outer conductive strips for power supply. Compared to the traditional method where a single aluminum foil heating strip is folded and rotated, leading to bending at the fold and causing localized overheating, this structure only involves bending at the outer and inner conductive strips, avoiding this problem. Furthermore, a polyimide film covering the outermost layer provides excellent flame retardancy, while a graphene film ensures uniform heating, preventing localized overheating of the heating film itself and improving overall flame resistance and safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the device structure of this utility model;

[0017] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the internal structure of the device of this utility model;

[0019] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0020] Figure 5 This is a partial structural diagram of the device of this utility model;

[0021] Figure 6 This is a schematic diagram of part of the structure of the device of this utility model;

[0022] Figure 7 for Figure 6 Enlarged structural diagram at point C.

[0023] In the diagram: 1. Main body of the electric heating film; 2. Polyimide film; 3. High-temperature resistant double-sided adhesive; 4. Graphene heat spreader layer; 5. Bottom polyester film; 6. Inner heating layer; 7. Inner polyester film; 8. Outer heating layer; 9. Top polyester film; 10. Graphene film; 11. Aluminum foil heating strip; 12. High-temperature resistant elastic skeleton strip; 13. Outer conductive strip; 14. Connecting hole; 15. Conductive block; 16. Inner conductive strip. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Example 1

[0026] Please see Figures 1 to 7 This utility model provides a technical solution: an electric heating film mechanism for a drying oven, including a high-temperature resistant double-sided adhesive 3, which is disposed on the electric heating film body 1. The electric heating film body 1 includes: a polyimide film 2, a graphene film 10, a top polyester film 9, an outer heating layer 8, an inner polyester film 7, and an inner heating layer 6, the inner heating layer 6 including an inner conductive strip 16; and an outer heating layer 8, the outer heating layer 8 including an aluminum foil heating strip 11, a high-temperature resistant elastic skeleton strip 12, and an outer conductive strip 13.

[0027] In practical applications, due to the extremely high thermal conductivity of graphene material, uniform heating can be achieved through the graphene film 10, which can avoid local overheating on the main body of the electric heating film 1. The thickness of the graphene film 10 is 0.007-0.009mm, the thickness of the polyimide film 2 is 0.025-0.050mm, and the thicknesses of the bottom polyester film 5, the inner polyester film 7, and the top polyester film 9 are 0.05-0.1mm.

[0028] Example 2

[0029] Based on Embodiment 1, to improve the practicality of the mechanism, an electrothermal film body 1 is provided. The electrothermal film body 1 is composed of a polyimide film 2, a graphene heat-equalizing layer 4, a bottom polyester film 5, an inner heating layer 6, an inner polyester film 7, an outer heating layer 8, a top polyester film 9, and a graphene film 10. By providing the graphene heat-equalizing layer 4, local overheating on the back of the electrothermal film body 1 can be avoided, improving the reliability of the structure. It is connected to the object by a high-temperature resistant double-sided adhesive 3, and heating is performed by the inner heating layer 6 and the outer heating layer 8, and the graphene... The film 10 can achieve uniform heating, which can avoid local overheating on the main body of the electric heating film 1 and improve the reliability of the device. The bottom polyester film 5, inner polyester film 7 and top polyester film 9 are all made of PET material. PET has excellent electrical insulation and its electrical performance is still good even at high temperature and high frequency. However, its corona resistance is poor. It has good creep resistance, fatigue resistance, heat resistance, friction resistance and dimensional stability. The bottom polyester film 5, inner polyester film 7 and top polyester film 9 cover the inner heating layer 6 and the outer heating layer 8.

[0030] The polyimide film 2 is connected to the graphene film 10, and the graphene film 10 is connected to the top polyester film 9. An outer heating layer 8 is provided between the top polyester film 9 and the inner polyester film 7. A high-temperature resistant elastic skeleton strip 12 is provided in the outer heating layer 8, and its two sides are connected to the top polyester film 9 and the inner polyester film 7 respectively. The polyimide film 2 has properties such as high temperature resistance, chemical stability and flame retardancy. By covering the outermost side with the polyimide film 2, the structure is given good flame retardancy and the safety is improved.

[0031] Example 3

[0032] Based on Embodiment 2, in order to improve the reliability of the mechanism, a high-temperature resistant double-sided adhesive 3 is provided. The high-temperature resistant double-sided adhesive 3 is connected to the graphene heat-equalizing layer 4. The graphene heat-equalizing layer 4 is connected to the bottom polyester film 5. An inner heating layer 6 is provided between the bottom polyester film 5 and the inner polyester film 7. A square plate-shaped high-temperature resistant elastic skeleton strip 12 is provided in the inner heating layer 6. The two sides of the high-temperature resistant elastic skeleton strip 12 are connected to the bottom polyester film 5 and the inner polyester film 7, respectively. The high-temperature resistant elastic skeleton strip 12 can improve the flexibility of the structure, provide support for the structure, improve the stability of the structure, and avoid the phenomenon of local overheating caused by bending of the aluminum foil heating strip 11.

[0033] The conductive block 15 has a circular plate-like structure. The conductive block 15 passes through the circular hole 14 on the inner polyester film 7 and is connected to the outer conductive strip 13. The outer conductive strip 13 and the inner conductive strip 16 are connected through the conductive block 15 in the connection hole 14.

[0034] The inner heating layer 6 is disposed between the bottom polyester film 5 and the inner polyester film 7. The bottom polyester film 5 includes aluminum foil heating strips 11, all of which are connected to the inner conductive strips 16. Conductive blocks 15 are fixedly connected to the inner conductive strips 16. Heating is achieved through the inner heating layer 6. The outer heating layer 8 is disposed between the top polyester film 9 and the inner polyester film 7. The outer heating layer 8 includes aluminum foil heating strips 11, which have a square plate-like structure. All aluminum foil heating strips 11 are connected to the outer conductive strips 13 and work together with the outer heating layer 8 to heat the material. The cooperation of these structures can improve the reliability of the device. The high-temperature resistant elastic skeleton strips 12 can improve the flexibility of the structure, provide support for the structure, improve the stability of the structure, and prevent the aluminum foil heating strips 11 from bending and causing local overheating.

[0035] Working Principle: In actual use, the high-temperature elastic skeleton strip 12 improves the flexibility of the structure and provides support. Each aluminum foil heating strip 11 is connected to the inner conductive strip 16 via the outer conductive strip 13 for power supply. Compared to the traditional method of folding and rotating the entire aluminum foil heating strip 11, which can cause bending at the folding point and lead to local overheating when laid flat, this structure only involves bending at the outer conductive strip 13 and the inner conductive strip 16, thus avoiding the problem of bending of the aluminum foil heating strip 11 and causing local overheating. At the same time, the polyimide film 2 covers the outermost side, giving the structure good flame retardancy. The graphene film 10 enables uniform heating, preventing local overheating on the main body of the heating film 1, improving the overall flame resistance of the structure, avoiding local overheating, and enhancing safety.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric film mechanism for a drying room, comprising a high-temperature-resistant double-sided tape (3) provided on an electric film main body (1), characterized in that: The electric heating film body (1) comprises a polyimide film (2), a graphene film (10), a top polyester film (9), an outer heating layer (8), an inner polyester film (7) and an inner heating layer (6), wherein the inner heating layer (6) comprises an inner conductive strip (16). The outer heating layer (8) comprises an aluminum foil heating strip (11), a high-temperature-resistant elastic skeleton strip (12) and an outer conductive strip (13).

2. An electric film heating mechanism for a drying room according to claim 1, characterized in that: The electric heating film body (1) is composed of a polyimide film (2), a graphene uniform heating layer (4), a bottom polyester film (5), an inner heating layer (6), an inner polyester film (7), an outer heating layer (8), a top polyester film (9) and a graphene film (10).

3. An electric film heating mechanism for a drying room according to claim 1, characterized in that: The high-temperature-resistant double-sided adhesive tape (3) is connected with the graphene uniform heating layer (4), the graphene uniform heating layer (4) is connected with the bottom polyester film (5), the inner heating layer (6) is arranged between the bottom polyester film (5) and the inner polyester film (7), the high-temperature-resistant elastic skeleton strip (12) in the form of a square plate is arranged in the inner heating layer (6), and the high-temperature-resistant elastic skeleton strip (12) is connected with the bottom polyester film (5) and the inner polyester film (7) on both sides.

4. An electric film heating mechanism for a drying room according to claim 1, characterized in that: The polyimide film (2) is connected with the graphene film (10), the graphene film (10) is connected with the top polyester film (9), the outer heating layer (8) is arranged between the top polyester film (9) and the inner polyester film (7), the high-temperature-resistant elastic skeleton strip (12) is arranged in the outer heating layer (8), and the high-temperature-resistant elastic skeleton strip (12) is connected with the top polyester film (9) and the inner polyester film (7) on both sides.

5. An electric film heating mechanism for a drying room according to claim 1, characterized in that: The outer heating layer (8) is arranged between the top polyester film (9) and the inner polyester film (7), the outer heating layer (8) comprises the aluminum foil heating strip (11), and the aluminum foil heating strip (11) is in the form of a square plate structure and connected with the outer conductive strip (13).

6. An electric film heating mechanism for a drying room according to claim 1, characterized in that: The inner heating layer (6) is arranged between the bottom polyester film (5) and the inner polyester film (7), the bottom polyester film (5) comprises the aluminum foil heating strip (11), and the aluminum foil heating strip (11) is connected with the inner conductive strip (16), and the inner conductive strip (16) is fixedly connected with the conductive block (15).

7. An electric film heating mechanism for a drying room according to claim 6, characterized in that: The conductive block (15) is in the form of a circular plate structure, and the conductive block (15) is connected with the outer conductive strip (13) through the connecting hole (14) in the form of a circular hole arranged in the inner polyester film (7).

Images