What fans are

square exhaust fans called fans, Hong Kong called fan, Japan and South Korea called Ventilator, is a use of a motor-driven fan rotation, to achieve the air speed up the flow of household appliances, mainly for the hot weather and the flow of cool air. Widely used in homes, offices, shops, hospitals and hotels and other places. Fan mainly by the fan head, blades, grilles and control devices and other components. electric industrial fans head includes an electric motor, end cap and shook his head before blowing institutions.