Engine cooling fan shroud having vortex-type recirculation...

Details Engine cooling fan shroud having vortex-type recirculation... Engine cooling fan shroud having vortex-type recirculation...

F - Mech Eng,Light,Heat,Weapons

01

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230/22

F01P 7/10 (2006.01) F01P 5/06 (2006.01) F04D 29/16 (2006.01) F04D 29/66 (2006.01)

Patent

CA 1335585

Shrouded engine cooling fan in which the interface between an outer stationary shroud fixed with respect to a radiator and an inner and rotating shroud fixed to the tips of the fan blades define a generally toroidal chamber in which a vortex of air is generated in response to the rotational drive of said fan that acts as a seal to block the flow of recirculation air from the fan discharge to the fan entrance over a wide range of fan operating points to increase fan operating efficiency and reduce fan generated noises.

600620

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