The centrifugal fan is a driven fluid machine that relies on the input mechanical energy to increase the gas pressure and discharge gas.

Axial flow fans are very widely used, that is, the airflow in the same direction as the axis of the fan blades, such as electric fans, air conditioner outdoor fans are axial flow fans. It is called "axial flow" because the gas flows parallel to the fan axis.

The centrifugal fan is a driven fluid machine that relies on the input mechanical energy to increase the gas pressure and discharge gas.

Axial flow fans are very widely used, that is, the airflow in the same direction as the axis of the fan blades, such as electric fans, air conditioner outdoor fans are axial flow fans. It is called "axial flow" because the gas flows parallel to the fan axis.