Shrouding for engine cooling fans

Details Shrouding for engine cooling fans Shrouding for engine cooling fans

1988-06-13

1989-06-06

Argenbright, Tony M.

Internal-combustion engines

Cooling

Devices for cooling liquid by air flow

4151701, 4151731, F01P 710

Patent

active

048361488

ABSTRACT:
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.

REFERENCES:
patent: 3280902 (1966-10-01), Laing
patent: 3842902 (1974-10-01), Poslusny
patent: 4329946 (1982-05-01), Longhouse
patent: 4357914 (1982-11-01), Hauser
patent: 4505641 (1985-03-01), Tsuchikawa et al.
patent: 4685513 (1987-08-01), Longhouse et al.

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