FRP centrifugal fans are fans made of fiberglass reinforced plastic (FRP), also known as corrosion-resistant centrifugal fans. They are generally used in applications with corrosive gases for exhausting such gases.

The conveyed gas shall not contain viscous substances. The dust and hard particle content shall be ≤ 150 mg/m³, gas temperature ≤ 60°C, and relative humidity ≤ 100%. FRP centrifugal fans are not suitable for high-temperature environments.

As the name implies, an FRP centrifugal fan is a centrifugal fan with a casing made of corrosion-resistant FRP. Its working principle is as follows:When the motor drives the fan impeller to rotate, the gas between the impeller blades also rotates and is thrown out under centrifugal force. The gas velocity increases, converting kinetic energy into static pressure energy. As the fluid is further pressurized, static pressure energy is converted back into velocity energy, and the gas is discharged through the outlet.Meanwhile, a certain negative pressure is formed at the center of the impeller. Due to the negative pressure at the inlet, external air is immediately drawn in under atmospheric pressure. With the continuous rotation of the impeller, gas is constantly discharged and replenished, achieving continuous air supply.

Under the same power, air pressure and air volume are generally inversely proportional: higher air pressure corresponds to lower air volume, and larger air volume corresponds to lower air pressure, so as to fully utilize the motor efficiency.

Widely used in scenarios involving corrosive gases, including:chemical industry, electroplating, oxidation processes, power plants, laboratories, printed circuit board (PCB) manufacturing, environmental protection equipment, etc.