Check valve for scroll compressor

Details Check valve for scroll compressor Check valve for scroll compressor

1998-05-15

2000-10-17

Denion, Thomas

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418270, 1375145, 1375147, 137220, 137540, 13753331, 1375133, F04C 1800

Patent

active

061321915

ABSTRACT:
A series of check valves are disclosed for use in a scroll compressor which control and dampen the closing of the check valve to reduce noise during rapid pressure fluctuations encountered during normal operation and to control loss of gas in a discharge passage. In one check valve, a reed valve or poppet valve is employed to control the motion of a main valve to a closed position. In another check valve, suction pressure is used to reduce the closing force of the main valve. In another check valve, the main refrigerant flow passes through a converging, diverging passage to create a relatively low pressure chamber to reduce the closing force of the main valve. In another check valve, the reverse flow from the discharge plenum either does not act to close the valve or acts on a reduced surface area.

REFERENCES:
patent: 1322938 (1919-11-01), Parker
patent: 3134394 (1964-05-01), Ohta
patent: 5531712 (1996-07-01), Malcolm et al.

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