Centrifugal Fan Blade Types. A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. As with the backward curved centrifugal fan, the suction side of the impeller blade draws air from the centre of the fan which results in a directional change of the airflow between the inlet and the exhaust of 90 o.
Centrifugal fans rely on blades to drag air into a circular motion. A centrifugal can contains blades mounted around a circular hub. The motion of the hub pulls air in and around the hub, increasing the air pressure as it goes.
The Different Blades Can Be Characterized As Shown In The Capacity Diagram Below:
Click image below to enlarge. Each wheel type has its own application range and limits. The motion of the hub pulls air in and around the hub, increasing the air pressure as it goes.
(Upto 2Inch Of Wg) Pressure Rise Is Mostly Due To High Absolute Velocity Of Air At Outlet Of Impeller.
Centrifugal fans can either have no exterior housing or structure to offer protection or they can be built with some protective housing. The optimum operating area for a forward curved centrifugal fan is when it is operating at higher pressure. Radial or straight blade each type has its own application range and limits.
The Latter Creates Higher Pressure Ratios Than A Centrifugal Fan Can Achieve.
Types of centrifugal blower fans. A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Straight steel plate paddle wheel;
