Refrigerant injection into oil for sound reduction

Details Refrigerant injection into oil for sound reduction Refrigerant injection into oil for sound reduction

1988-11-02

1990-02-13

Smith, Leonard E.

Pumps

With muffler acting on pump fluid

417902, 62296, F04B 2102

Patent

active

049002341

ABSTRACT:
In a low side hermetic compressor, a small portion of the compressed refrigerant gas is diverted and discharged into the oil sump through an orifice into the upper level of the oil in the sump. This results in a supersaturated solution of refrigerant in oil in the upper level which drives the refrigerant out of the oil, thereby creating froth which provides sound reduction without disturbing the lower level which remains stratified. A check valve is provided for preventing reverse flow while requiring a predetermined pressure differential for diversion.

REFERENCES:
patent: 3066857 (1962-12-01), McCloy
patent: 3155312 (1964-11-01), Douglas

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