Common faults and solutions of electric heater in air duct

Electric heating is the process of converting electrical energy into thermal energy. Since the discovery of the heat effect of the power supply through the wire, many inventors in the world have been engaged in the research and manufacture of various electric electric appliances. The development and popularization of electrothermal technology, like other industries, follows such a rule: from the advanced country to the rest of the world, from the city to the countryside, from collective use to family and then to individuals, and products from low-grade to high-grade. In nineteenth Century, electric appliances are mostly poor germination stage, the earliest is used for electric appliance life, 1893 provide iron prototype in the United States and the first to use, then in 1909 the use of the electric cooker, electric heater is placed on the stove, i.e. heating firewood to transfer from the electrical, from electricity energy into heat. But the rapid development of the real electric electric appliance industry is after the invention of nickel chromium alloy used as an electric heating element. In 1910, the United States first developed the electric iron made of nickel chromium alloy heating wire, which fundamentally improved the structure of the electric iron, and the iron was quickly popularized. By 1925, in Japan, the product of installing electric heating elements in the pot became the original form of the modern electric cooker. In this stage, there are also electric heating products such as electric furnace, melting furnace, heater and so on. From 1910 to 1925, the development stage of the electrothermal appliances has been greatly developed. In family and industrial fields, the emergence and popularization of various kinds of electric heating.

appliances have been developing rapidly, especially family. So the invention of nickel chromium alloy is the foundation of the development of electric electric appliance industry.

The fluid explosion-proof electric heater is a kind of electric energy conversion to heat energy to heat the material to be heated. In the work of low temperature fluid through a pipe under pressure into the input port, along the electric heating container specific heat flow path using fluid thermodynamic principle, take heat energy generated in the heating element, the heating medium temperature, high temperature medium electric heater export process requirements. The electric heater internal control system according to the automatic regulation of the heater power output temperature sensor signal output port, the output port of the uniform medium temperature; when the heating element overheating, overheating protection device independent of the heating element immediately cut off the heating power, heating the material to avoid overheating caused by coking, metamorphism, carbonization, leading to severe fever element burn, prolong the service life of the electric heater.

Common faults in electric heaters:

Cannot be heated (the electric heater inside the electric heater is fired or the wiring box is broken)

Rupture or fracture of the electric heating tube (heat pipe crack, corrosion rupture of electric heating tube, etc.)

Leakage (mainly automatic circuit breaker or leakage protection switch tripping, electric heating tube can not be heated), usually this situation accounts for more than 90% of the electrical heater failure.

Treatment of electric heater failure:

If the heater can not be heated, and the inner part of the heating tube is broken, it can't be repaired. It can only be replaced. If the line or joint is open or loose, it can be reconnected.

If the electric heating pipe is broken or broken, then only the electric heating tube is replaced.

If the leakage is to confirm the leakage point, the situation is considered. If it is the electric heating tube itself, it can be roasted in the oven. If the insulation resistance doesn't go up, it may need to replace the electric heating tube. If the junction box is heated by water heater, it can be dried by hot air gun. If the wire breaks, then it can be wrapped or replaced by the tape.