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.

Centrifugal blower fan.

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. It also adds kinetic energy to the air. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink. Centrifugal blowers or fans are among the most efficient and versatile pieces of air moving equipment.

Direct drive fans have fewer moving parts than belt drive fans for less maintenance. 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. The low pressure area at the center of the fan creates a vacuum that draws air into the fan. 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.

The two most common types of centrifugal blowers are pressure blowers and volume blowers. In addition to material handling applications centrifugal air blowers are popular for the hvac industry and air pollution control systems.