Rotary valve for fluid motor or pump

Details Rotary valve for fluid motor or pump Rotary valve for fluid motor or pump

1979-11-27

1981-11-03

Smith, Leonard E.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

13762521, 418144, F01C 2112

Patent

active

042983185

ABSTRACT:
A rotary valve for changing the connections of the fluid inlet passages and the fluid outlet passages of a Gerotor type fluid rotary machine in which the fluid is contracted and expanded by a plurality of cavities defined by the teeth formed on a stator and a rotor in response to the orbital rotation of the rotor formed with one less external tooth than the number of the internal teeth on the stator. The rotary valve selectively connects the fluid passages with the Gerotor cavities by means of its rotary commutator which orbits with a phase difference of 90.degree. with respect to the Gerotor rotor, and the commutator is rotatably accommodated in a spacer disposed between an end cover and a port member having a plurality of fluid passages. The clearance at each side of the commutator is permanently determined by the width of the spacer. A seal is disposed between the opposed sides of the commutator and the port member and that of the commutator and the end cover so as to prevent reduction in the Volumetric efficiency due to leakage of the fluid flowing through the clearances caused at both sides of the commutator.

REFERENCES:
patent: 3316814 (1967-05-01), Charlson
patent: 3452680 (1969-07-01), White, Jr.
patent: 3513879 (1970-05-01), Adams
patent: 3976407 (1976-08-01), Gerlach

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