Differences Between Axial and Centrifugal Fans

Although there are some similarities between centrifugal fans and axial fans, there are also distinct differences. Regardless, both types of fans are used for industrial applications.

Centrifugal Fans

Centrifugal fans, also referred to as blowers and squirrel cage fans because they resemble a hamster wheel, were invented in 1832 by Lt. Gen. Alexander Sablukov, a military engineer with the Empire Imperial Russian Army. This type of fan is capable of moving air, as well as other gasses. The speed of the airstream increases thanks to rotating impellers, which are a series of blades.

The various types include forward curved, backward inclined, radial, airfoil, radial tip, and inline. Two specific characteristics of the centrifugal fan are high pressure and low flow rate, with flow perpendicular to the blower axis. Fans designed with paddle impellers are ideal whenever debris passes through the system, thereby preventing clogs. For fans with blades that curve backward, the volume of air produced is less than with axial fans while the amount of pressure generated is more significant.

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