Scroll compressor having a discharge muffler chamber

Details Scroll compressor having a discharge muffler chamber Scroll compressor having a discharge muffler chamber

1997-01-17

1999-01-26

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 554, 418181, F04C 1804, F04C 2906

Patent

active

058631917

ABSTRACT:
The invention concerns a scroll compressor which is low in noise caused by water hammering of a refrigerant gas just after a discharge valve is closed. The scroll compressor includes a discharge member (45) having a discharge port (8) opposed to a discharge port (5) of a fixed scroll (2) and a discharge valve (9) opposed to the discharge port (8) of the discharge member (45) and opened/closed depending on a difference between flow passage pressure of a refrigerant gas and pressure in a high pressure space (27) in a sealed vessel (1). At least either of the fixed scroll (2) and the discharge member (45) is formed with a muffler chamber communicated with the discharge port (5, 8) and having a diameter larger than a diameter of the discharge port (5) of the fixed scroll (2) for suppressing occurrence of an impulse wave caused by water hammering when the discharge valve (9) is closed. Noise caused by a pressure ripple of the discharge port lessens, quieting the operation of the scroll compressor.

REFERENCES:
patent: 4427351 (1984-01-01), Sano
patent: 5090880 (1992-02-01), Mashimo
patent: 5346375 (1994-09-01), Akiyama et al.
Patent Abstracts of Japan, vol. 11, No. 272, p. 122, Sep. 4, 1987, JP-A-62 075 089, Apr. 6, 1987.

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