A circulation fan is a fan used to circulate air in a closed space. Its working principle is as follows:
Impeller structure:
Circulation fans usually adopt a volute-free impeller design.
The impeller consists of multiple blades, and the blades are in the shape of an airfoil.
Working process:
Air enters the fan: Air enters the impeller through the fan inlet.
Impeller rotation: The motor drives the impeller to rotate at high speed.
Air acceleration: The blades on the impeller accelerate the air and generate kinetic energy.
Pressure increase: The accelerated air flows through the fan, and the pressure of the air increases due to the conversion of kinetic energy into pressure energy.
Air discharge: The pressurized air is discharged through the fan outlet.
Aerodynamic characteristics:
Circulation fans have medium pressure and large air volume characteristics.
Pressure and air volume can be controlled by adjusting the impeller speed or blade angle.