An encapsulated electrothermal film having an exhaust

Abstract

The utility model discloses a kind of encapsulated electric heating film with exhaust device, it is related to electric heating film encapsulation structure technical field.Its structure includes the heating film encapsulated between upper and lower two waterproof membranes and two conductive metal foil sheets overlapped in the both sides end of heating film;Two waterproof membranes one end encapsulated with two conductive metal foil sheets electric connection power cord connector, two waterproof membranes other end encapsulated with exhaust pipe;Exhaust pipe is cut off by cutting device and ventilates.The utility model adds soft glue exhaust pipe and plastic buckle in traditional encapsulated electric heating film, residual gas in encapsulated electric heating film can be manually discharged when paving, avoid the phenomenon of bulging caused by gas accumulation in airtight structure;Conductive metal foil sheet adopts corrugated structure, and set up the V-shaped gas guide groove in vertical length direction, form gas guide passage;Far-end gas can be extracted by vacuum system efficiently through gas guide groove, solve the problem that gas in long electric heating film is difficult to empty.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrothermal film encapsulation structure, and in particular relates to an encapsulated electrothermal film with an exhaust device. Background Technology

[0002] To meet the requirements for waterproof and flame-retardant electric heating films, they typically require the use of materials such as PVC, TPU, and PE for hot pressing and high-frequency bonding to form a sealed structure with waterproof and flame-retardant properties. The power connection device and the heating film are both placed inside the encapsulation film. However, during the encapsulation process, the outer film often cannot effectively expel air after heat sealing and high-frequency bonding. Current technology mainly uses vacuum extraction to remove air, but in actual production, heating films are often several meters long (10-20 meters), and vacuum extraction can only remove air from about 1 meter of the air intake; air beyond 1 meter cannot be extracted. Therefore, in actual construction and use, the installation structure from top to bottom is generally: a tile / wood flooring layer, a cement / protective film layer, an encapsulated electric heating film layer, an insulation layer, and a reflective layer. In this structural configuration, during the laying of cement and wood flooring, the air inside the encapsulated heating film is forced from one end to the other. Simultaneously, the air expands due to heat. Since the encapsulated heating film is a sealed, waterproof structure, the air often causes it to bulge significantly. Without heat-sealing or high-frequency equipment on-site, workers can only resort to destructive venting, which not only affects the construction quality of the encapsulated heating film but also cannot guarantee against damage to other components. To address these issues, this application provides an encapsulated heating film with a venting device. Utility Model Content

[0003] The purpose of this invention is to provide an encapsulated electrothermal film with an exhaust device. Through structural optimization and innovation of the exhaust system, the problem of gas residue in the encapsulation and use of long-size electrothermal films is systematically solved.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is an encapsulated electric heating film with an exhaust device, comprising a heating film encapsulated between upper and lower waterproof films and two conductive metal foils overlapping the two ends of the heating film; one end of the two waterproof films is encapsulated with a power cord connector electrically connected to the two conductive metal foils, and the other end of the two waterproof films is encapsulated with an exhaust pipe; the exhaust pipe is shut off by a cutting-off device.

[0005] In a preferred embodiment of this utility model, the exhaust pipe is a soft rubber tube; the cutting device is a plastic buckle; the exhaust pipe passes through the plastic buckle, and when the plastic buckle clamps the exhaust pipe, it is flattened and cut off to allow air to pass through.

[0006] As a preferred embodiment of this utility model, the conductive metal foil has a corrugated cross-section, and its upper half is provided with several V-shaped air guide grooves perpendicular to its length direction.

[0007] As a preferred embodiment of the present invention, it further includes an air guide bracket connected to the exhaust pipe, and the air guide bracket is encapsulated within two layers of the waterproof membrane.

[0008] As a preferred embodiment of the present invention, the air guide bracket includes a flat strip; the two ends of the flat strip are respectively placed at the ends of the two conductive metal foils; a rectangular air guide channel is formed on the side of the flat strip opposite to the conductive metal foils; a connecting pipe connected to the exhaust pipe is provided on the other side of the flat strip, and the connecting pipe communicates with the rectangular air guide channel.

[0009] This utility model has the following beneficial effects: This invention utilizes a soft rubber vent pipe and plastic clips to manually expel residual gas (such as gas generated by construction compression or thermal expansion) from the encapsulated heating film during installation, preventing bulging caused by gas accumulation within the sealed structure. The plastic clips remain sealed after being cut, maintaining waterproof performance. No complex equipment is required; workers can achieve venting through simple operation (opening and closing the clips), avoiding destructive treatment that could damage the heating film and other components, thus improving construction quality.

[0010] This invention utilizes a corrugated structure for the conductive metal foil and incorporates V-shaped gas guide grooves along its vertical length to form a gas guide channel. Gas at a distance can be efficiently extracted by the vacuum system through these grooves, solving the problem of difficult venting of gas from distant locations in long heating films. The flat strips of the gas guide bracket, via rectangular gas guide channels and connecting pipes, direct gas from the ends of the two conductive metal foils to the exhaust pipe, forming a complete gas channel and further improving vacuum efficiency while reducing residual gas volume.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the encapsulated electrothermal film with an exhaust device according to this utility model.

[0014] Figure 2 for Figure 1 A schematic diagram of the transverse cross section.

[0015] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0016] Figure 4 This is a schematic diagram of the structure of a conductive metal foil.

[0017] Figure 5 This is a schematic diagram of the plastic clip structure.

[0018] Figure 6 This is a schematic diagram of the air guide support structure.

[0019] The attached diagram lists the components represented by each number as follows: 1-Waterproof membrane, 2-Heating membrane, 3-Conductive metal foil, 4-Power cord connector, 5-Exhaust pipe, 6-Plastic buckle, 7-Air guide bracket, 31-V-shaped air guide groove, 71-Flat strip, 72-Rectangular air guide channel, 73-Connecting pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Specific Implementation Example 1: Please see Figure 1-3 As shown, this utility model is an encapsulated electric heating film with an exhaust device, comprising a heating film 2 encapsulated between two layers of waterproof film 1 and two conductive metal foils 3 overlapping the two ends of the heating film 2. The conductive metal foils 3 can be made of aluminum foil or copper foil, but the same material is used for all encapsulated electric heating films. One end of each layer of waterproof film 1 is encapsulated with a power cord connector 4 that is electrically connected to the two conductive metal foils 3, and the other end of each layer of waterproof film 1 is encapsulated with an exhaust pipe 5. The exhaust pipe 5 is shut off by a cutting-off device. The waterproof film 1 is made of materials such as PVC, TPU, and PE. During encapsulation, hot pressing and high-frequency bonding are performed to form an encapsulated electric heating film with a sealed structure and waterproof and flame-retardant properties.

[0022] The exhaust pipe 5 is a soft rubber tube, and its material is the same as that of the encapsulation sleeve used in the encapsulation of the electrothermal film, facilitating fusion bonding. The cutting device is a plastic clip 6. The exhaust pipe 5 passes through the plastic clip 6, and when clamped by the clip 6, the exhaust pipe 5 is flattened and cut off, allowing air to pass through. Figure 5As shown in the figure, the specific structure of the plastic buckle 6 is as follows. The plastic buckle 6 is an existing product and has the function of cutting off the air passage of the exhaust pipe 5 of the soft rubber tube. It will not be described in detail here.

[0023] One specific application of this embodiment is as follows: during installation, the gas remaining in the encapsulated heating film is squeezed from one end of the power cord connector 4 to one end of the exhaust pipe 5. The plastic buckle 6 is opened to release the gas bulge in the encapsulated heating film. After the air is exhausted, the plastic buckle 6 is closed again to cut off the ventilation of the exhaust pipe 5. Specific Implementation Example 2: Based on Specific Embodiment 1, the difference in this embodiment is that the length range of vacuuming is extended during the encapsulation and production of the encapsulated electrothermal film, thereby reducing the amount of gas residue inside the encapsulated electrothermal film.

[0025] like Figure 4-6 As shown, the conductive metal foil 3 has a corrugated cross-section, and its upper half is provided with several V-shaped air guide grooves 31 perpendicular to its length direction.

[0026] To facilitate convenient ventilation between the two conductive metal foils 3 and the exhaust pipe 5, a gas guide bracket 7 connected to the exhaust pipe 5 is provided, and the gas guide bracket 7 is encapsulated within two layers of waterproof membrane 1. The gas guide bracket 7 includes a flat strip 71. The two ends of the flat strip 71 are respectively positioned at the ends of the two conductive metal foils 3. A rectangular gas guide channel 72 is formed on the side of the flat strip 71 opposite the conductive metal foils 3. A connecting pipe 73 is provided on the opposite side of the flat strip 71, connecting to the exhaust pipe 5, and the connecting pipe 73 communicates with the rectangular gas guide channel 72, forming a complete gas flow channel. The gas guide bracket 7 is made of non-conductive plastic.

[0027] One specific application of this embodiment is: when the encapsulated heating film is vacuum heat-sealed, the gas between the two waterproof films 1 at the part far from the vacuum plug enters the air guide channel of the corrugated structure of the conductive metal foil 3 through the V-shaped air guide groove 31 of the conductive metal foil 3. The gas is output from the V-shaped air guide groove 31 closer to the vacuum plug and is drawn away, which solves the problem that the gas inside the long encapsulated heating film is not easy to be drawn away.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sealed electric heating film with an exhaust device, comprising a heating film (2) sealed between upper and lower waterproof films (1) and two conductive metal foils (3) overlapping both ends of the heating film (2); one end of the two waterproof films (1) is sealed with a power cord connector (4) electrically connected to the two conductive metal foils (3), characterized in that: The other end of the two layers of waterproof membrane (1) is sealed with an exhaust pipe (5); the exhaust pipe (5) is shut off by a cut-off device.

2. The encapsulated electrothermal film with an exhaust device according to claim 1, characterized in that, The exhaust pipe (5) is a soft rubber tube; the cutting device is a plastic buckle (6); the exhaust pipe (5) passes through the plastic buckle (6), and when the plastic buckle (6) clamps it, the exhaust pipe (5) is flattened and cut off to allow air to pass through.

3. The encapsulated electrothermal film with an exhaust device according to claim 1, characterized in that, The conductive metal foil (3) has a corrugated cross-section, and its upper half is provided with several V-shaped air guide grooves (31) perpendicular to its length direction.

4. The encapsulated electrothermal film with an exhaust device according to claim 1, characterized in that, It also includes an air guide bracket (7) connected to the exhaust pipe (5), and the air guide bracket (7) is encapsulated within two layers of the waterproof membrane (1).

5. The encapsulated electrothermal film with an exhaust device according to claim 4, characterized in that, The air guide bracket (7) includes a flat strip (71); the two ends of the flat strip (71) are respectively placed at the ends of the two conductive metal foils (3); a rectangular air guide channel (72) is opened on the side of the flat strip (71) opposite to the conductive metal foil (3); a connecting pipe (73) connected to the exhaust pipe (5) is provided on the other side of the flat strip (71), and the connecting pipe (73) is connected to the rectangular air guide channel (72).

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