Positive displacement pump

Details Positive displacement pump Positive displacement pump

1998-05-18

2000-10-03

Nguyen, Hoang

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

4182011, F01C 2104

Patent

active

061264253

ABSTRACT:
A positive displacement pump is provided which is high both in reliability and in durability being durable in a continuous operation for a long period of time with the suction side of the pump temperature-controlled. In the positive displacement pump, rotors (21, 22) are accommodated in a pump housing (10) to form a plurality of operating chambers (31, 32), in such a manner that the operating chambers (31, 32) are increased on the suction side and decreased on the discharge side. A temperature control system (40) for controlling the temperature (12) of the suction inlet (12) of the pump is provided.

REFERENCES:
patent: 1590964 (1926-06-01), Street
patent: 3923433 (1975-12-01), Hermes et al.
patent: 3937602 (1976-02-01), Sharples
patent: 3950116 (1976-04-01), Sharples
patent: 4158531 (1979-06-01), Ito
patent: 4228654 (1980-10-01), Hill
patent: 5533566 (1996-07-01), Fineblum

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