Rotary compressors

Details Rotary compressors Rotary compressors

1980-05-07

1983-06-14

Gluck, Richard E.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417290, 417292, 417298, 417307, F04B 4902, F04B 4908, F04B 4910

Patent

active

043880460

ABSTRACT:
A rotary oil sealed compressor including an unloader valve to restrict or close the compressor intake when the compressor pressure rises above the normal working pressure (i.e. when the demand for compressed air drops or ceases) and a minimum pressure valve arranged to ensure that the pressure within the compressor never drops below a predetermined minimum value, further includes venting means responsive to the rise in pressure in the compressed air supply line above a predetermined value exceeding the normal working valve arranged to vent the delivery and compression spaces of the compressor. Thus under no-load conditions the pressure within the compressor is reduced to a relatively low level which considerably reduces the power consumed when the compressor is idling.

REFERENCES:
patent: 2961147 (1960-11-01), Osterkamp
patent: 3059832 (1962-10-01), Cox et al.
patent: 3602610 (1971-08-01), Bloom
patent: 3737252 (1973-06-01), Pilarczyk et al.
patent: 3788776 (1974-01-01), Post et al.
patent: 4068980 (1978-01-01), Fine et al.
patent: 4089623 (1978-05-01), Hofman

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