A manufacturing method for a new type of immersion heater
【 Technical field 】
[0001] The present utility model relates to a novel immersion heater for heating aluminum liquid, particularly a novel immersion heater.

[0002] Immersion heater is a commonly used device for heating or insulation of aluminum liquid, which can be applied in insulation furnaces, online refining processing units, in plant transfer packages, large land transport packages, flow channels, and other fields. However, current immersion heaters are generally straight type, which can be divided into junction boxes, protective shells, heating elements, and other parts. The heating elements are vertically arranged inside the protective shell. This straight type heater has two installation methods: vertical and horizontal. One is to insert this straight type immersion heater vertically or obliquely into the aluminum liquid during use. As the aluminum liquid is used, the liquid level changes, which will cause a part of the heating part to be exposed outside the aluminum liquid. Due to the low thermal conductivity of the air, this part generates too much heat, and the heat exposed to the air cannot be quickly dissipated, resulting in overheating of the heating element and ultimately damage to the heater; At the same time, the surface temperature of the aluminum liquid is too high, which increases the oxidation of the aluminum liquid. Another method is to install horizontally, placing the heating part of the heater at the bottom of the aluminum liquid. However, this method requires sealing the heater with the container containing the aluminum liquid. Due to the complex sealing structure and poor reliability, there is a risk of aluminum leakage, and installation and replacement are inconvenient, which poses a safety hazard.