Positive-displacement, fluid machine

Details Positive-displacement, fluid machine Positive-displacement, fluid machine

1976-07-30

1978-01-17

Freeh, William L.

Rotary expansible chamber devices

Trapped fluid relief

418206, F04C 1704, F04C 2900

Patent

active

040689883

ABSTRACT:
In the embodiment of the invention as depicted, the same comprising a rotary compressor, a channel or passageway is provided in the machine to communicate two variable volume chambers which are formed by rotary pistons and walls of the compressor housing, to equalize pressure in the two chambers. The purpose here is to prevent one chamber from pre-compressing before the other, so that a small pocket formed between the rotors by the inter-engaging teeth will not come up to pressure, and be expanded back into the inlet, to avoid a clearance loss and a waste of horsepower.

REFERENCES:
patent: 3392676 (1968-07-01), Bizier
patent: 3844695 (1974-10-01), Weatherston
patent: 3989413 (1976-11-01), McGahan

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