Centrifugal fan

Common card · No. 449955

A centrifugal fan is a mechanical device for moving air or other gases from the rotating inlet, in a direction perpendicular to the axis of rotation of the fan, to an outlet. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across an electronic device's heat sink; such a fan is also called a blower, blower fan, turbo fan or squirrel-cage fan (because it resembles a hamster wheel). Tiny ones used in computers are sometimes called biscuit blowers. They are typically used in ducted applications to either push or pull air through ductwork or a heat exchanger; similar to impellers. Centrifugal fans can provide similar air movement from a smaller fan package, and overcome higher resistance in air streams than a comparably sized axial fans. Centrifugal fans use the kinetic energy of the impellers to move the air stream, which in turn moves against the resistance caused by ducts, dampers and other components. Centrifugal fans displace air radially...

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