Fan blade assembly for electric fan

Details Fan blade assembly for electric fan Fan blade assembly for electric fan

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/32 (2006.01) F04D 25/08 (2006.01) F04D 29/38 (2006.01)

Patent

CA 2578514

Fan blade assemblies are provided for quiet and efficient operation in portable electric axial flow fans intended for home or office use. The blades of the fan blade assemblies include a forward sweep to provide relatively quiet operation. The camber lines of the blades are curved to provide generally concave pressure surfaces and generally convex suction surfaces.

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