Screw compressor with scavenging port

Details Screw compressor with scavenging port Screw compressor with scavenging port

1986-09-11

1988-09-13

Vrablik, John J.

Rotary expansible chamber devices

With plural working fluid inlet or outlet passages

418201, F04C 1816, F04C 2900

Patent

active

047706155

ABSTRACT:
A screw compressor including a scavenging port, which is separate from a discharge port, located on or in a vicinity of a discharge-side end face of the working space of the casing, for scavenging gas therethrough from a compression chamber near to a completion of a suction stroke. Gas of high temperature leaking from a compression chamber on high-pressure side into a compression chamber on a low-pressure side (in the suction stroke) can be scavenged from the compressor to outside, thereby avoiding a reduction in suction volume efficiency, an increase in consumption of power, and a rise in temperature of gas to be compressed which might otherwise be caused by the gas of high temperature leaking into the compression chambers during a suction stroke.

REFERENCES:
patent: 2620968 (1952-12-01), Nilsson
patent: 3057543 (1962-10-01), Marsden
patent: 3275226 (1966-09-01), Whitfield
patent: 3423017 (1969-01-01), Schibbye
patent: 3526470 (1970-09-01), Swanson
patent: 3610787 (1971-10-01), Borisoglebsky
patent: 3877846 (1975-04-01), Lundberg
patent: 4042310 (1977-08-01), Schibbye et al.
patent: 4487563 (1984-12-01), Mori
patent: 4560333 (1985-12-01), Fujiwara

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