Thursday, January 19, 2017

Centrifugal Fans – Basic Types and Associated Benefits

There are several different types of centrifugal fans, each with unique design characteristics, performance capabilities, and benefits. Often referred to as blowers, these industrial fans are used for high-pressure applications by a variety of industries, as well as air pollution systems.

These fans work by increasing the pressure of an incoming airstream by turning a series of blades (impeller) mounted on a circular hub. This accelerates the air as well as changes the direction of the air flowing outward, often by 90 degrees. In addition, these fans produce a steady airflow.

Basic Types of Centrifugal Fans

Below are the six most common types of centrifugal fans, each with a unique blade configuration.


  • Forward Curved Fan – Also known as a squirrel cage fan due to the wheel type, this fan’s impeller is forward and somewhat small. In addition, the blades curve in the same direction as the rotation of the wheel. Because the impeller, shaft, housing, and bearings are delicately made, there are some limitations for sustainability when used for industrial applications. However, this fan is great for low-speed and low-pressure applications.

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