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

Abstract

According to the present invention, an electric heating tube embedded with a thermal fuse and its preparation method, the electric heating tube external lead rod, thermal fuse, electric heating tube internal lead rod and electric heating wire are fixed in sequence from left to right in the electric heating tube empty tube , the part of the external guide rod of the electric heating tube is exposed outside the empty tube of the electric heating tube, and the exposed part is provided with a ceramic insulating head and a nut. The fixing position of the thermal fuse, the fixing position of the thermal fuse and the inner lead rod of the thermal fuse and the electric heating tube are all wrapped by the insulating heat-resistant tube, and the silicone gasket isolates the heating wire in the cavity of the right heating tube, and the left side Both the empty tube cavity of the electric heating tube and the empty tube cavity of the right electric heating tube are filled with magnesium oxide powder. When the electric heating tube is overloaded, the thermal fuse is blown to ensure the safe operation of the electric heating tube, prevent fire and other safety hazards, reduce personal injury or property loss, and the preparation method is simple, efficient, and reliable in quality.

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...

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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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