Centrifugal Blower Fan

The low pressure area at the center of the fan creates a vacuum that draws air into the fan.

Centrifugal blower fan.

How a centrifugal fan works the rotating fan blade creates a low pressure area at the center of the blade and a high pressure area at the edges of the blade. It also adds kinetic energy to the air. Such a fan is also called a blower fan biscuit blower or squirrel cage fan because it looks like a hamster wheel. Centrifugal blowers or fans are among the most efficient and versatile pieces of air moving equipment.

Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink. These fans increase the speed and volume of an air stream with the rotating impellers. Equipment cooling blowers create a more concentrated stream of air than equipment cooling fans to blow away the heat generated by electronic equipment induction heaters and high wattage bulbs. In addition to material handling applications centrifugal air blowers are popular for the hvac industry and air pollution control systems.

Centrifugal fans also known as centrifugal air blowers are one of the most widely used fans because it s more cost effective than axial fans and these fans are simpler in terms of construction. Centrifugal fans and blowers typically have one of eight types of wheels that draw the air into the inlet of the blower housing through the wheel and discharges it at 90 degrees out through the discharge of the housing.