Rotary positive-displacement fluid-pressure machines

Details Rotary positive-displacement fluid-pressure machines Rotary positive-displacement fluid-pressure machines

1985-06-11

1986-08-19

Smith, Leonard E.

Rotary expansible chamber devices

With mechanical sealing

Axially movable end wall or end wall portion

418132, 418206, F04C 1827

Patent

active

046067132

ABSTRACT:
A rotary positive-displacement fluid-pressure machine of bi-directional type including a casing, intermeshing rotors, and a pressure-balancing arrangement, associated with the end face, remote from said rotors, of the or each end plate means of the machine. Each arrangement comprises sealing means which separate a plurality of areas on said end face, certain being subjectable to high, and others to low, fluid pressures. A further area defined by further sealing means and subjectable only to high fluid pressure is in a zone opposite, and is in positional correspondence with, that zone of the face of the end plate means engaging the rotors which is in registry with the region where the rotors mesh. The further area extends through and beyond the common plane of the rotor axes towards the low pressure side of the machine.

REFERENCES:
patent: 2759426 (1956-08-01), Blomgren
patent: 2809592 (1957-10-01), Miller
patent: 2842066 (1958-07-01), Hilton
patent: 3251309 (1966-05-01), Schmiel
patent: 3924029 (1966-12-01), Clark

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