Tuesday, November 29, 2011

Centrifugal Fans

Centrifugal fans and blowers are mechanical device where air or gases are flowed from side of a fan having few blades. And the supplied air or gases come out perpendicularly to the rotating fan because of the centrifugal force. This is why it is called centrifugal fans. With this fan direction of flow is controlled.  If the speed of the fan is raised highly using electric energy then a huge blast of air come out of the device which may be used for cleaning or blowing light particles. That is why it is called blower. Therefore engineers consider centrifugal fans and blowers are related devices. Centrifugal fans and blowers were designed by a Russian engineer named Alexander Sablukov. Now the device has been of three kinds depending on the blades of the fan. These are: ‘forward curved blades’, ‘backward curved blades’ and ‘straight radial blades’ .All these are being used in different purpose. But all the fans are following the same equation-rotation of fan = (rotation of motor*diameter of motor)/diameter of fan.

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