Positive displacement rotary compressors

Details Positive displacement rotary compressors Positive displacement rotary compressors

1984-09-26

1985-11-19

Gluck, Richard E.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417310, 418 97, 418DIG1, F04B 4902, F04B 4908, F04B 4910

Patent

active

045539065

ABSTRACT:
A positive displacement rotary compressor includes a stator which contains a rotor and has a stator inlet communicating with atmosphere via a first pilot operated valve and a stator outlet connected to a primary lubricant reservoir via a non-return valve and to an auxiliary lubricant reservoir via a second pilot operated valve and one or more lubricant injection orifices arranged to inject oil into the stator and connected to the primary reservoir via a third pilot operated valve and to the secondary reservoir. The compressor also includes a pilot control system responsive, in use, to the compressed air load to which the compressor is subjected and arranged to switch the first and third pilot operated valves from an open position to a closed position and the second pilot operated valve from a closed position to an open position when the compressed air load falls below a predetermined value. The auxiliary lubricant reservoir is always at substantially atmospheric pressure.

REFERENCES:
patent: 3395856 (1968-08-01), Clark
patent: 3448916 (1969-06-01), Fraser
patent: 4068980 (1978-01-01), Fine et al.
patent: 4388046 (1983-06-01), Boller

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