"220V AC Cooling Fan" is a new gas source generating device, the choice of high-strength, high-quality aluminum alloy material fatigue as the main material, it has a compact structure, small size and light weight, vortex pump motor for direct-coupled , "220V AC Cooling Fan" does not require any transmission mechanism, because of its simple structure, the form of direct transmission, it also has low noise, energy-consuming province, stable performance, easy maintenance, etc., and sent dry air, no oil low temperature rise, "220V AC Cooling Fan" is another gas source generating device can not match.