Oil-free screw compressor apparatus

Details Oil-free screw compressor apparatus Oil-free screw compressor apparatus

1989-04-25

1991-04-30

Vrablik, John J.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

Vent or non-seal means prevents working and non-working...

418DIG1, 4182011, 184 624, F04C 1816, F04C 2902

Patent

active

050113887

ABSTRACT:
An oil-free screw compressor prevents a filter for separating oil mist from a gear case exhaust gas from clogging due to increase pressure loss in the filter, thereby suppressing increasing of an gear case inner pressure and further ensuring a removing of the oil mist from the exhaust gas. The oil-free screw compressor comprises a gear case exhaust pipe connected to a filter container containing a filter element for separating the oil mist, and a vacuum ejector having a suction port connected to second side space of the filter element contained in the container so as to make the pressure of the second side space of the filter element in the container negative pressure.

REFERENCES:
patent: 3905729 (1975-09-01), Bauer
patent: 4035114 (1977-07-01), Sato
patent: 4632650 (1986-12-01), Frieden et al.
patent: 4725210 (1988-02-01), Suzuki et al.

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