Method for preventing a leakage loss of gases in a screw compres

Details Method for preventing a leakage loss of gases in a screw compres Method for preventing a leakage loss of gases in a screw compres

1978-11-13

1982-05-11

Vrablik, John J.

Rotary expansible chamber devices

Methods

418 15, 418 83, 418104, 418201, F04C 1816, F04C 2700, F04C 2900

Patent

active

043291260

ABSTRACT:
A method for preventing a leakage loss of gases in an oil-free screw type rotary compressor including a housing, a rotor assembly comprising a pair of male and female rotor members rotatably mounted within said housing and a cooling jacket surrounding said housing, said housing and said pair of male and female rotor members defining therebetween an axially progressive series of sealed cavities for a gas, which method comprises the steps of returning as cooled a leakage gas from rotor shaft seals on the discharge side of said compressor to a first of said axially progressive series of sealed cavities, the leakage gas being returned to the compressor at a point where the suction cycle has been completed and the compression cycle has yet to begin.

REFERENCES:
patent: 3989413 (1976-11-01), McGahan et al.

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