Recirculating rotary gas compressor

Details Recirculating rotary gas compressor Recirculating rotary gas compressor

1994-01-27

1995-08-08

Vrablik, John J.

Rotary expansible chamber devices

With plural working fluid inlet or outlet passages

418 83, 418180, 418206, F04C 1818, F04C 2904

Patent

active

054393582

ABSTRACT:
A positive displacement, recirculating Roots-type rotary gas compressor which operates on the basis of flow work compression is disclosed. The compressor includes a pair of large diameter recirculation conduits (30 and 32) which return compressed discharge gas to the compressor housing (16), where it is mixed with low pressure inlet gas, thereby minimizing adiabatic heating of the gas. The compressor includes a pair of involutely lobed impellers (12 and 14) and an associated port configuration which together result in uninterrupted flow of recirculation gas. The large diameter recirculation conduits equalize and accelerate gas flow velocities within the compressor and minimize gas flow losses. The compressor is particularly suited to applications requiring sustained operation at higher gas compression ratios than have previously been feasible with rotary pumps, for example continuous pumping of natural gas in gas transmission facilities.

REFERENCES:
patent: 4215977 (1980-08-01), Weatherston
patent: 4859158 (1989-08-01), Weinbrecht
patent: 5090879 (1992-02-01), Weinbrecht

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