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Centrifugal blowers
General features
The centrifugal (or radial) blowers are generally characterized by high static pressure and high efficiency at the working point.
The air is sucked in the same direction as the wheel’s shaft and pushed in a radial direction.
The centrifugal blowers are classified according to the direction of the blade curvature with respect to the rotation of the wheel. So they are classified as forward curved blade, backward curved blade or radial blade blowers.
The set-up of the blade curvature gives significant differences in the blower performance.
The forward curved blade centrifugal blowers are to be always used with the wheel placed in a housing, contrary to the backward curved blade blowers. The latter in fact increases the air pressure within the blades.
According to the aeraulic or geometric requirements, the suction side of the forward curved blade blowers can be single or dual.
