Axial flow fan

Details Axial flow fan Axial flow fan

F - Mech Eng,Light,Heat,Weapons

04

D

230/18

F04D 19/00 (2006.01) F04D 29/32 (2006.01)

Patent

CA 1223577

ABSTRACT OF THE DISCLOSURE An axial flow fan has a plurality of impeller blades spaced around a hub assembly. The leading edge of each blade overlaps completely the trailing edge of the preceding blade, and the angular spacing between the radial center lines of the blades is unequal, preferably varying in a sinusoidal pattern, so that tonal noise of the fan is effectively attenuated.

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