Rotor-type pump having a communication passage interconnecting w

Details Rotor-type pump having a communication passage interconnecting w Rotor-type pump having a communication passage interconnecting w

1997-05-22

1999-08-31

Vrablik, John J.

Rotary expansible chamber devices

Multistage

Working fluid engages working member serially in...

418 612, 418 75, F04C 222, F04C 1500

Patent

active

059444991

ABSTRACT:
A rotor-type pump comprises a housing having a trochoidal curved surface and an intake port and a discharge port. A drive shaft is mounted rotatably about a first axis in the housing. A rotor having a second axis eccentric to the first axis is rotatably mounted to the drive shaft. The rotor cooperates with the trochoidal curved surface. A plurality of working-fluid chambers are defined by the trochoidal curved surface and an outer peripheral surface of the rotor and variable in volume as the rotor rotates. The intake port is open into one chamber of the chambers and the discharge port is open into another chamber thereof. A communication passage fluidly interconnects at least adjacent two of the chambers. A rotor control mechanism is provided for controlling the rotor to move along the trochoidal curved surface with a predetermined clearance therebetween upon rotation of the rotor.

REFERENCES:
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patent: 5391067 (1995-02-01), Saunders
patent: 5410998 (1995-05-01), Paul et al.
patent: 5443375 (1995-08-01), Cureton et al.
patent: 5769619 (1998-06-01), Crvelin et al.

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