AC eddy fan from the outside of the fan rotor induction motor, plastic impeller with a combination of ventilation and heat dissipation from the cooling of the unique advantages. Motor temperature is low, thus extending fan life and reliability, the fan for the backward curved impeller, with a compact, air volume, high static pressure, vibration, low noise, and easy installation. Mainly used for cleaning tables, cleaning unit, the indoor dust pipes, air conditioning system, environmental protection and pollution control and other refrigeration equipment for use. Environment: Environmental temperature: -25 ℃ ~ +55 ℃ Altitude: ≤ 2500m Relative humidity: ≤ 90% RH (25 ℃)