Self-temperature-control heating wire and heating element with self-temperature-control heating wire

The self-temperature-controlled heating wire, designed with a C-shaped cross-section and insulation layer, solves the problems of high hardness and easy damage in existing technologies, enabling flexible application and safe heating in small spaces.

CN224265137UActive Publication Date: 2026-05-19YANGZHOU E-POLY TECH CO LTD
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Patent Information

Application Number
CN202520938406.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-12
Publication Date
2026-05-19
Estimated Expiration
2035-05-12

AI Technical Summary

Technical Problem

Existing self-regulating electric heating cables have high rigidity due to their flat structure, making them difficult to use in environments with limited space or small bending radii. They are also easily damaged at bends, which limits their application range.

Method used

The temperature-controlled heating layer and insulation layer are designed with a C-shaped cross-section, combined with polymer composite materials and a metal braided mesh shielding layer to form a cylindrical structure, which enhances flexibility and safety. The extrusion molding process ensures creepage distance and insulation protection between conductors.

Benefits of technology

It achieves increased heating width and stability with a small outer diameter, avoids the risk of overheating, is suitable for construction in small areas, and improves the application range and safety.

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Abstract

The utility model relates to an automatic temperature control heating wire and a heating element with the same. The automatic temperature control heating wire comprises a plurality of leads, a temperature control heating layer and an insulating layer. The wires comprise first wires and second wires which are arranged in parallel and at intervals. The resistivity of the temperature control heating layer is increased along with temperature rise, one end of the temperature control heating layer wraps the first wire, the other end of the temperature control heating layer wraps the second wire, the temperature control heating layer is bent to enable the transverse section of the temperature control heating layer to be in a C shape, an opening is formed between the first wire and the second wire, and the insulating layer fills and extrudes the opening and wraps the temperature control heating layer. Therefore, the practicability and the safety of the self-temperature-control heating wire are improved.
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