Screw compressor

Details Screw compressor Screw compressor

1984-02-07

1985-12-24

Smith, Leonard E.

Rotary expansible chamber devices

Apertured bypass to pressurize or relieve working chamber...

418189, 418201, F04C 2500

Patent

active

045603332

ABSTRACT:
A screw compressor having a recess formed in the high-pressure end surface of the casing. This recess receives the fluid from a closed working space which has just been isolated from the discharge port and closed in the compression step. Consequently, the abnormal pressure rise in the closed working space, which is caused due to the compression of the fluid confined, is completely eliminated. The recess has a configuration involving a curve conforming with the leading flank of the female rotor at the instant at which the working space is isolated from the discharge port and closed.

REFERENCES:
patent: 2540235 (1951-02-01), Berkley
patent: 3057543 (1962-10-01), Marsden
patent: 3423017 (1969-01-01), Schibbye
patent: 3874828 (1975-04-01), Herschler
Japanese Laid Open Application No. 58-214693, Dec. 1983.

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