Anti-slug suction muffler for hermetic refrigeration compressor

Pumps – With muffler acting on pump fluid

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Details

55276, 55385R, 55458, 417902, F04B 3916

Patent

active

043137156

ABSTRACT:
A hermetic refrigeration motor-compressor assembly includes a motor driving a compressor having suction and discharge ports. A hermetically sealed casing encloses the motor and compressor and has a gas inlet opening coupled by a conduit to the evaporator of the refrigeration system. A discharge conduit is coupled to the compressor discharge port and extends out of the casing to the condenser. The casing also encloses a suction muffler having a wall defining a chamber, the wall having inlet and outlet openings communicating with the chamber, the casing and muffler inlet openings being in closely spaced alignment to provide a semi-direct suction coupling. The muffler outlet opening is directly coupled to the compressor suction port. The wall of the muffler has another opening therein spaced from the inlet and outlet openings and communicating with the chamber. A passage in the muffler chamber extends between the inlet and other opening and has opposite ends respectively coupled thereto. The passage has a vent opening therein communicating with the chamber so that gas entering the passage through the muffler inlet opening flows outwardly through the vent opening into the chamber and then through the outlet opening to the compressor suction port whereas, a slug of liquid refrigerant flows through the passage and out of the other opening to the sump in the casing.

REFERENCES:
patent: 971823 (1910-10-01), Bishop
patent: 2133875 (1938-10-01), Steenstrup
patent: 2501794 (1950-03-01), Stephens
patent: 3084523 (1963-04-01), Bottum et al.
patent: 3180567 (1965-04-01), Quiggle et al.
patent: 3387774 (1968-06-01), Gannaway et al.
patent: 3514225 (1970-05-01), Monden et al.
patent: 3563053 (1971-02-01), Bottum
patent: 4105374 (1978-08-01), Scharf
patent: 4147479 (1979-04-01), Morse

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