Accumulator/oil tank for journal oil supply
AssigneePratt & Whitney Canada Corp.
InventorGiusseppe Rago
Life of this patent
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Abstract
A combined oil tank and oil accumulator vessel having an internal chamber, and a moveable spring-loaded barrier within the internal chamber defining a low pressure oil tank portion and a high pressure accumulator portion separated by the moveable barrier. The combined oil tank accumulator provides the advantages of more consistent oil flow supply as a result of the integral accumulator, but with reduced weight, reduced oil volume requirements, and constant oil levels when compared with conventional external accumulators.
Claims6
A combined oil storage tank and oil accumulator vessel having an internal chamber, the vessel comprising:
- a moveable barrier disposed within the internal chamber having a low pressure surface and a high pressure surface;
- a low pressure oil storage tank portion defined within the chamber bounded by the low pressure surface of the barrier, the oil tank portion including a low pressure inlet and low pressure outlet;
- a high pressure accumulator portion defined within the chamber bounded by the high pressure surface of the barrier, the accumulator portion including a high pressure inlet and a high pressure outlet;
- and
- spring biasing means co-acting with the barrier for resisting the pressure differential between the low and high pressure surfaces of the barrier wherein the vessel operates to continuously provide and reclaim oil without interruption.
Dependencies are inferred from the claim text.