Double-core heating cable for electric floor heating

Abstract

The invention relates to a double-core heating cable for electric floor heating. The profile of the cable is in an ellipse shape. The double-core heating cable comprises two alloy heating cores, an insulation layer, a grounding layer, a shielding layer, and an external protection sleeve, wherein the alloy heating cores are wrapped by a high temperature-resistant insulation layer; double layers of metal wires are woven and wrap the insulation layer to form the grounding layer; the grounding layer is wrapped by the polyvinyl chloride protection sleeve; the grounding layer is integrally connected with the protection sleeve; the shielding layer is disposed outside the grounding layer; the shielding layer comprises an internal layer and an external layer; the internal layer is formed by aluminum foil full wrapping or metal wire weaving; the external layer is formed by winding metal wires around the internal layer taking the internal layer as an axis clockwise; and the protection sleeve is disposed outside the shielding layer. Compared with the prior art, the double-core heating cable is good in mechanical strength, durable and anti-tensile, long time aging-resistant, high in safety performance, rapid in heating and temperature rise, environment-protecting and energy-saving.

Description

technical field [0001] The invention relates to a heating cable, in particular to a double-core heating cable used for electric floor heating. Background technique [0002] Heating cable is a cable structure made of heating wire, using electricity as the energy source, and using alloy resistance wire to energize and convert the electrical energy into heat energy to achieve the effect of heating or moisturizing. Usually, there are single-conductor and double-conductor. The heating cable is usually composed of a heating core, an insulating layer, a grounding layer, a shielding layer and an outer sheath. After the heating cable is energized, the current passes through the heating cable. The form of radiation is emitted to heat the heated body. With the development of economy and society, people's awareness of safety, environmental protection and health are constantly improving, and more stringent requirements are put forward for the safety performance, heating performance, mec...

AI Technical Summary

Problems solved by technology

With the development of economy and society, people's awareness of safety, environmental protection, and health are constantly improving, and more stringent requirements are put forward for the safety performance, heating performance, mechanical performance, and environmental protection performance of heating cables. The insulation layer and protective cover of the existing heating cable are made of polyvinyl chloride (PVC) material. After a long time of electrification and heating, the material is easy to age, easy to produce plasticizer smell, and has a short service life. The heating core uses nickel aluminum alloy as the heating conductor. It heats up slowly and consumes a lot of power. The shielding layer is formed by directly covering the insulating layer with a metal shielding material. The heating cable is not easy to install and bend, and it is easy to twist. The shielding effect is not good. The grounding wire uses a single grounding wire , once it is bent and twisted during the installation process, it will cause poor connection and cause serious safety hazards

During the actual use of existing heating cables, problems such as aging, poor grounding, slow heating, reduced calorific value, non-environmental protection, and increased energy consumption will occur after long-term use

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