Nickname for centrifugal fans, common in the field of PC cooling, used a small centrifugal fan called a turbofan. Turbofan gas flow perpendicular to the shaft and axial fans air flows parallel to the axis of the common.

Compared to conventional cooling fans, centrifugal fans can be output in a smaller footprint greater air flow to improve cooling effect. Centrifugal fan blade Machining accuracy of ordinary fans are demanding higher impeller fouling or noise nuisance from high speeds and more. Is CPU power consumption down, CPU large diameter low speed normal turbofan being replaced by axial silent fan, but in high-performance graphics, especially video card heatsink is still frequently used.

Centrifugal type fan is by motor led impeller rotating, impeller in the of leaves forced gas rotating, on gas work, makes its momentum increased, gas in centrifugal force of role Xia, to impeller around dumped out, through Vortex type machine shell will kinetic energy conversion into pressure can, dang impeller within of gas discharge Hou, impeller within of pressure below into wind tube pressure, new of gas in pressure poor of role Xia inhalation impeller, gas on continuous of from fan within discharge.