Electric heating equipment

Abstract

The invention provides electric heating equipment capable of enhancing safety when the heating of a heating wire is abnormal. The electric heating equipment comprises heating bodies comprising heating wires and detection wires, wherein the heating wires are wound on a winding core, the detection wires are spirally wound on a shaft installing a heat sensing layer between the detection wires and the heating wires and being coated by an insulation jacket, and the heating bodies are connected with a power supply by a temperature fuse in series to form the electric heating equipment. In the electric heating equipment, two heating bodies are arranged, and the heating wire contained in one heating body and the heating wire contained in the other heating body are connected with the power supply in series in a mode of reverse flowing current direction. The electric heating equipment comprises a control part. Because the abnormal heating of the heating wires causes the fusion of the heat sensing layer, the control part enables the temperature fuse to be fused after the heating wires and the detection wires generate short circuit and are heated because of current flowing through the detection wires.

Description

technical field [0001] The present invention relates to electric heating equipment used in electric heating blankets, electric heating carpets or electric kottoves, etc., and in particular to an electric heating equipment, which includes a heating element, the heating element includes a heating wire and a detection wire, and the heating wire is wound on a roll On the core, the detection line is helically wound on the coaxial with the heat-sensitive layer interposed between the detection line and the heating line, and covered with an insulating jacket, and the heating element is connected in series through a thermal fuse. power supply. Background technique [0002] In the electric heating equipment described above, it is necessary to take measures to avoid accidents such as fire and smoke due to abnormal heat generation of the heating element. Proposals have been made, for example, using a heating element composed of a heating wire wound on a winding core and a shorting wire...

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned Patent Document 1, the heating wire and the short-circuit wire are divided into two sections respectively, so that although the potential difference applied between the two sections of wires can be reduced, when the heating wire generates heat abnormally, the heat-sensitive layer melts, thereby It leads to a short circuit between the heating wire and the short-circuit wire. Therefore, although the current flowing through the heating wire is small, it cannot be ignored, so there are hidden dangers in safety, and there is still room for improvement.

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