Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Patent
1989-03-14
1990-04-17
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
1376252, F04C 210, F04C 1502, F03C 208
Patent
active
049175858
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 teeth than the number of the internal teeth on the stator. The rotary valve selectively communicates 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 means of the width of the spacer. The commutator comprises spaced members that move in unison with radially spaced sealing rings interposed between the two members.
REFERENCES:
patent: 4449898 (1984-05-01), Lambeck
Niemiec Albin J.
Walrad John F.
Cavanaugh David L.
Vickers Incorporated
Vrablik John J.
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