Hermetic dynamoelectric device with two-phase refrigerant coolin

Details Hermetic dynamoelectric device with two-phase refrigerant coolin Hermetic dynamoelectric device with two-phase refrigerant coolin

1982-03-03

1983-03-15

Shoop, William M.

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 920

Patent

active

043769020

ABSTRACT:
A hermetic dynamoelectric device includes a hollow stepped shaft. Liquid refrigerant is introduced through a pipe into the shaft, where it flashes behind the step. Rotation of the shaft separates the liquid and gas phases. The liquid phase is sprayed outwardly for cooling, and the gas phase flows around the shaft into a refrigerant plenum, where it acts upon a bearing seal to prevent leakage of lubricating oil into the refrigerant circuit.

REFERENCES:
patent: 3188833 (1965-06-01), Robinson
patent: 3422635 (1969-01-01), Trenkowitz
patent: 3445695 (1969-05-01), Schultz
patent: 3445695 (1969-05-01), Schultz
patent: 4176292 (1979-11-01), Kalsi et al.

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