The Structure, Function And Welding Process in The Production of Air Duct Electric Heater

Air duct electric heaters are different from ordinary electric heaters in terms of structure and function. Of course, its production will also have a series of strict requirements. In addition to understanding the basic composition of air duct electric heaters, we must also Be familiar with its function and production process.

The air duct type electric heater is mainly composed of two parts: the body and the control system. The heating element is made of stainless steel pipe as a protective sleeve, and a series of materials such as high-temperature resistance alloy wire and crystalline magnesium oxide powder are placed inside, which are formed by compression process. And its control part is composed of advanced digital circuit, integrated circuit trigger, high reverse voltage thyristor, etc., which realizes the adjustable temperature measurement and constant temperature system, and ensures the normal operation of the electric heater.

Since the corrugated stainless steel belt is used around the air duct electric heater, the cooling area can be effectively increased, and the heat exchange efficiency is greatly improved. And the special design of the heater makes the wind resistance very small, keeps heating evenly, and has no high cold corners.

The double protection design of the air duct electric heater makes the safety performance of the equipment better during operation; in addition, the thermostat and fuse installed on the heater can be used to control the working temperature of the air duct, so that the air duct electric heater is also The scope can be further expanded.

Welding is a very important step in the production of the air duct electric heater system, because most of the system is transported by pipelines, so the connections between pipelines and between pipelines and other components, in addition to bolt connections, are made of Welding.

When welding, the flange should be welded to the pipe inlet first, and then the two pipes should be connected by bolts. Since the pipe is filled with hot oil, the temperature and pressure are relatively high, and the quality of the welding directly affects the entire system. the quality of. It can be seen from this that welding is an important part of the production of air duct electric heaters.