How to use the air duct electric heater to effectively extend its life

How to effectively extend the lifespan of an air duct heater?

The meltblowing process requires large quantities of hot air. Compressed air from the air compressor is dehumidified and filtered before being delivered to an air heater for heating and then to the meltblowing die assembly. The input-to-output voltage ratio is equal to the coil turns ratio, while maintaining constant energy. Therefore, the secondary coil generates a high current at low voltage. The principle behind air duct heaters is that when thick metal is exposed to an alternating magnetic field, electromagnetic induction generates a current. The heat generated by the current flow is absorbed by the metal itself, causing it to heat up rapidly. The heating and cooling rates are fast, reaching up to 10°C/s, and the regulation is fast and stable. Temperature drift due to lead or lag in the controlled air temperature is eliminated, making it ideal for automatic control.

Explosion-proof electric heaters are generally used in hazardous environments where explosions are a possibility. Because the surrounding environment contains flammable and explosive materials such as oils, gases, and dust, sparks can cause explosions. Therefore, explosion-proof electric heaters are essential for heating in such environments. The heater's internal control system automatically adjusts the heater's output power based on the output temperature sensor signal to maintain a uniform temperature at the outlet.

The heater's internal control system automatically adjusts the heater's output power based on the output temperature sensor signal to maintain a uniform temperature at the outlet. This effectively extends the heater's service life by preventing overheating of the heated material, which can cause coking, deterioration, or carbonization, and in severe cases, burnout of the heating element. The primary protection measure for explosion-proof electric heaters is a flameproof device within the heater's junction box to eliminate the risk of explosions from sparks.