Axial flow fan improvements

Details Axial flow fan improvements Axial flow fan improvements

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/56 (2006.01) F04D 25/08 (2006.01) F04D 29/32 (2006.01) F04D 29/38 (2006.01) F04D 29/66 (2006.01) F24F 7/007 (2006.01) A01F 25/22 (2006.01) A01G 9/24 (2006.01)

Patent

CA 2550407

An energy efficient and compact axial flow fan having a housing comprising a fan assembly having a drive motor and a propeller coupled thereto. The inlet opening and/ or the outlet opening of the fan are provided with a shutter assembly having a plurality aerodynamically shaped pair of pivoted louvers working in tandem for less air obstruction and noise. The propeller comprises a plurality of radial blades comprising means for reducing the vortex flow of the propeller thereby permitting the shutter to be mounted adjacent the propeller to lessen the dept of the fan housing.

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