Centrifugal fans from ebm-papst are the supreme high-pressure specialists in centrifugal design, featuring 90° air deflection and aerodynamically optimized impellers. Ideal for use in extremely compact 1U and 2U rack-mount servers. Come in many sizes and configuration levels. Centrifugal fans move air radially — the direction of the outward flowing air is changed, usually by 90°, from the direction of the incoming air. The airflow created by centrifugal fans is directed through a system of ducts or tubes. This helps create a higher pressure airflow than axial fans.
A centrifugal blower is a motor or pump that moves air using centrifugal force created by the rotation of an impeller that pulls air or fluids into the blower and pushes it out through the blower’s outlet. In the discussion of centrifugal blowers, the use of the terms blower and fan are used interchangeably. Centrifugal fans are based around a rotating wheel of blades called impellers, which drag the entering air or gas into a circular motion. It is then pushed out of the fan by the centrifugal force created by the rotation. The flow of air changes direction when both exiting and entering the fan.
Centrifugal fans consist of an impeller in a casing having a spirally shaped contour. The air enters the impeller in an axial direction and is discharged at the impeller outer periphery. The air flow moves along the centrifugal direction (or radial direction). Constant airflow allows centrifugal fans to generate energy that reaches up to 84% static efficiency. These higher efficiency levels are ideal for sustaining larger air systems.
