Electric heating tube with internally embedded thermal fuse and preparation method thereof

Abstract

The invention provides an electric heating tube with an internally embedded thermal fuse and a preparation method thereof. An electric heating tube external leading rod, a thermal fuse, an electric heating tube internal leading rod and heating wires are successively and fixedly connected with an electric heating blank tube from left to right; the electric heating tube external leading rod is exposed from the electric heating blank tube; the exposed portion is provided with a ceramic insulated head and a nut; the contact position of the electric heating tube external leading rod and the electric heating blank tube are sealed with sealant; the fixation position of the electric heating tube external leading rod and the thermal fuse, the thermal fuse and the fixation position of the thermal fuse and the electric heating tube internal leading rod are wrapped by insulating heatproof tubes; the heating wires are isolated in a right side electric heating blank tube chamber by a silica gel gasket; a left electric heating tube blank tube chamber and the right side electric blank tube chamber are both filled with magnesium oxide powder. When the electric heating tube is overloaded, the thermal fuse is fused, which ensures the safety of the electric heating tube, prevents fire and other hidden dangers, reduces personal injury and property loss, and the preparation method is simple, efficient and reliable.

Description

technical field [0001] The invention relates to an electric heating tube, in particular to an electric heating tube embedded with a thermal fuse and a preparation method thereof. Background technique [0002] The electric heating tube is composed of metal tube, spiral resistance wire and crystalline magnesium oxide powder with good thermal conductivity and good insulation. It is suitable for heating air, oil, water, chemical medium, hot pressing mold, molten salt, alkali and low temperature melting point alloys, etc. It has the characteristics of high thermal efficiency, long service life, high mechanical strength, convenient installation, safety and reliability. Therefore, electric heating tubes are widely used in civil heating, especially in electrical products such as electric water heaters, electric faucets, air conditioners, and water dispensers. [0003] However, due to the use environment and the abnormal operation of the machine, the control devices of many machine...

AI Technical Summary

Problems solved by technology

[0003] However, due to the use environment and the abnormal operation of the machine, the control devices of many machines cannot disconnect the circuit in time, and the electric heating tube has been heating, resulting in countless safety hazards such as fires, which will virtually bring personal injury to consumers. Property loss, there is a great security risk

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