Improved self-temperature-limiting electric heating belt

Abstract

The utility model discloses an improved self-temperature-limiting ribbon heater, which comprises core wires and a PTC (Positive Temperature Coefficient) conductive polymer heating tape, the core wires are arranged in the PTC conductive polymer heating tape in parallel, an inner insulating layer, a shielding layer and an outer insulating layer are sequentially sleeved outside the PTC conductive polymer heating tape, an outer functional coating layer is coated on the outer insulating layer, and an outer functional coating layer is coated on the outer functional coating layer. And the lower end surface of the PTC conductive polymer heating tape is connected with a plurality of insulating heat conductors along the length direction of the PTC conductive polymer heating tape. Compared with the prior art, the improved self-temperature-limiting ribbon heater has the advantages of being convenient to use and high in heat utilization efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating tapes, in particular to an improved self-limiting temperature electric heating tape. Background Art

[0002] In a low-temperature environment, components such as compressors and pipelines in air conditioners often have problems such as difficult startup and oil freezing, thus affecting the normal operation of the air conditioner. Therefore, auxiliary heat tracing components need to be equipped at these parts to play the roles of antifreeze, anti-condensation, and heat preservation.

[0003] In the prior art, PTC self-limiting temperature electric heating tapes are usually used. However, in the prior art, most PTC self-limiting temperature electric heating tapes are used through a shielding layer, a wire core, and a PTC tape. Among them, the heat transfer efficiency of the tape body is relatively low, and more heat is dissipated from the side that is not in contact with the equipment, resulting in low heat utilization efficiency. At the same time, due to environmental impacts, the wire body may be corroded during use, affecting its performance. Summary of the Utility Model

[0004] (1) Problems to be Solved

[0005] The technical problem to be solved by the utility model is to overcome the above technical defects and provide an improved self-limiting temperature electric heating tape that is convenient to use and has high heat utilization efficiency.

[0006] (2) Technical Solutions

[0007] To solve the above technical problem, the technical solution provided by the utility model is: an improved self-limiting temperature electric heating tape, including a core wire and a PTC conductive polymer heating tape. The core wires are arranged in parallel in the PTC conductive polymer heating tape. An inner insulating layer, a shielding layer, and an outer insulating layer are sequentially sleeved outside the PTC conductive polymer heating tape. An outer functional coating layer is also coated on the outer insulating layer. A plurality of insulating heat conductors are connected and arranged along the length direction of the lower end surface of the PTC conductive polymer heating tape.

[0008] As an improvement, the outer functional coating layer includes a heat insulation coating layer and an anti-corrosion coating layer from the inside to the outside.

[0009] As an improvement, the shielding layer is a metal shielding layer.

[0010] As an improvement, the insulating heat conductor is silicone rubber or a ceramic body.

[0011] (3) Beneficial Effects

[0012] The advantages of the utility model compared with the prior art are as follows: In this application, by improving the structure of the electric heating tape, additional functions are added through the additionally provided outer functional coating layer to extend the service life. Through the cooperation of the heat insulation coating layer and the insulating heat conductor, directional heat transfer is realized, greatly improving the heat utilization efficiency. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the cross-section of an improved self-limiting temperature heating cable.

[0014] As shown in the figure: 1. Core wire; 2. PTC conductive polymer heating tape; 3. Inner insulating layer; 4. Shielding layer; 5. Outer insulating layer; 6. Outer functional coating layer; 7. Insulating heat conductor. Specific embodiments

[0015] The following will further illustrate the specific embodiments of the present invention with reference to the accompanying drawings. The same components are denoted by the same reference numerals.

[0016] It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0017] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0019] In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] Please refer specifically to the attached Figure 1 , The improved self-limiting temperature heating cable includes a core wire 1 and a PTC conductive polymer heating tape 2, and the core wires 1 are arranged in parallel within the PTC conductive polymer heating tape 2.

[0021] In the use of the present application, an inner insulating layer 3, a shielding layer 4 and an outer insulating layer 5 are sequentially sleeved outside the PTC conductive polymer heating tape 2, and an outer functional coating layer 6 is also coated on the outer insulating layer 5. In order to meet the functional requirements of use, the outer functional coating layer 6 includes a heat insulation coating and an anti-corrosion coating from the inside to the outside.

[0022] Along the length direction of the lower end surface of the PTC conductive polymer heating tape 2, a plurality of insulating heat conductors 7 are connected and arranged. At the same time, the insulating heat conductor 7 is made of silicone rubber or ceramic, and preferably magnesium oxide ceramic is used for heat conduction.

[0023] During use, the shielding layer 4 is a metal shielding layer 4. After wiring, the insulating heat conductor contacts the pipe to be heated for heat conduction. When the temperature rises, the resistance decreases and the power reduces, so that the heat generation of the self-limiting temperature heating tape decreases; on the contrary, when the temperature drops, the resistance of the self-limiting temperature heating tape increases and the power rises, so that the heat generation of the self-limiting temperature heating tape increases, thereby raising the temperature and keeping the temperature constant to achieve automatic temperature control.

[0024] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0025] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, details are not described here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0026] The above describes the present utility model and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those skilled in the art are inspired by it and without departing from the creative purpose of the present utility model, they design similar structural manners and embodiments to this technical solution without creative efforts, which should all fall within the protection scope of the present utility model.

Claims

1. Improved self-limiting temperature heating cable, comprising a core wire (1) and a PTC conductive polymer heating tape (2), characterized in that: The core wires (1) are arranged in parallel within the PTC conductive polymer heating tape (2), and an inner insulating layer (3), a shielding layer (4), and an outer insulating layer (5) are successively sleeved outside the PTC conductive polymer heating tape (2). An outer functional coating layer (6) is further coated on the outer insulating layer (5). A plurality of insulating heat conductors (7) are connected and arranged along the length direction of the lower end surface of the PTC conductive polymer heating tape (2).

2. The improved self-limiting temperature heating cable according to claim 1, wherein: The outer functional coating layer (6) includes a heat insulation coating and an anti-corrosion coating from the inside to the outside.

3. The improved self-limiting temperature heating cable according to claim 1, characterized in that: The shielding layer (4) is a metal shielding layer (4).

4. The improved self-limiting temperature heating cable according to claim 1, wherein: The insulating heat conductor (7) is silicone rubber or a ceramic body.

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