Scavenge oil system

Details Scavenge oil system Scavenge oil system

1987-02-24

1988-07-12

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Including additional means causing or controlling fluid flow...

415110, F01D 2520

Patent

active

047566647

ABSTRACT:
The scavenge oil system disclosing the invention has a scavenge oil outlet located at the bottom of a blower housing whereby lubricating oil can flow thereto by gravity in most attitudinal positions of the housing. When the blower housing is in an attitude that a portion thereof, such as the rear, is at a level lower than the scavenge oil outlet, a scavenge pump, having an impeller driven by the blower shaft, is rendered effectively operable by having an inlet beneath the level of oil at the rear of the housing and the scavenge pump pumps the oil to a higher level whereby it may flow from the housing by gravity through either the scavenge oil outlet of the housing or through other passages. The scavenge oil system utilizes passages for oil flow formed as cored passages in the wall of the blower housing to minimize cost and weight addition to the blower and minimizes the power demands on the blower drive, since the scavenge pump will run dry in most attitudes of the blower and will only require power when effectively operating to pump oil to a higher level.

REFERENCES:
patent: 1958145 (1934-05-01), Jones
patent: 2234777 (1941-03-01), Puffer
patent: 2492020 (1949-12-01), Thoresen
patent: 3442444 (1969-05-01), Kievit
patent: 3976165 (1976-08-01), Pilarezyk
patent: 4308464 (1981-12-01), Yamamoto

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