Segmented heating wire, manufacturing method thereof and heating element

Abstract

The invention discloses a segmented heating wire, a manufacturing method thereof and a heating element. The heating wire is provided with a heating segment and a non-heating segment, the heating wire comprises an insulating layer, a support, a resistance wire and a wire, the resistance wire is wound on the support, the resistance wire is connected in parallel with at least one segment of the wire, and the parallel connection part of the resistance wire and the wire forms the non-heating segment. The rest part of the heating wire forms a heating section, the resistance wire and the wire form a heating wire body, and the insulating layer wraps the periphery of the heating wire body; the heating element comprises a heating wire and a heat dissipation plate, the heating section of the heating wire makes contact with the heat dissipation plate, and the non-heating section of the heating wire does not make contact with the heat dissipation plate. The heating wire is designed to be of a segmented heating structure, so that the segment, in direct contact with the heat dissipation plate, of the heating wire achieves the heating function, meanwhile, the segment, in non-contact with the heat dissipation plate, of the heating wire greatly reduces the heating function, it is guaranteed that the segment, in non-contact with the heat dissipation plate, of the heating wire cannot be burnt out after being used for a long time, and the service life of the heating element is greatly prolonged.

Description

technical field [0001] The invention relates to a segmented heating wire, a manufacturing method thereof and a heating element, belonging to the field of heating equipment. Background technique [0002] Resistance wire is a common heating device. The heating element generally includes a heat sink and a resistance wire. The resistance wire is clamped on the heat sink and is in contact with the heat sink. When the resistance wire and the heat sink are in contact, the resistance wire often forms a multi-layer arrangement, and the straight section of the resistance wire is embedded in the heat sink. Since the heat sink is mostly a metal part, it is difficult to open the mold for the bent part of the resistance wire. The resistance wire is clamped on the heat sink. Therefore, the bent part of the resistance wire is not in contact with the heat sink. Therefore, in the heating state, the temperature of the resistance wire in the bent section will be higher than that in the straight...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned problems in the prior art, thereby providing a segmented heating wire and its manufacturing method and heating element, which solves the problem that the heating wire is easily disconnected after a long time of use, and improves the heating wire and heating element. Heating element service life

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