Silencer-carrying rotary vane pump

Details Silencer-carrying rotary vane pump Silencer-carrying rotary vane pump

1986-06-11

1988-05-31

Vrablik, John J.

Rotary expansible chamber devices

With removal or accommodation of solid foreign material in...

418181, 417312, 181272, 181274, F04C 18344, F04C 2906, F01N 110

Patent

active

047477610

ABSTRACT:
A silencer-carrying rotary vane pump wherein a hollow portion is provided between inner and outer circumferential walls of a cylindrical center case of the vane pump. The hollow portion is closed with side covers to form a sealed chamber through which a pumped out medium is discharged to the outside. A plurality of partitions may be provided in a portion of the sealed chamber to divide the sealed chamber into a plurality of sealed compartments, with adjacent compartments being in communication with each other by a passage having a small cross-sectional area. Soundproof members may be provided in the sealed compartments and an additional discharge port may be provided for communicating the sealed chamber with the outside of the pump.

REFERENCES:
patent: 2057262 (1936-10-01), Osgood
patent: 2643731 (1953-06-01), Schmid
patent: 2764342 (1956-09-01), Dills
patent: 3459275 (1969-08-01), Prillwitz et al.
patent: 3936238 (1976-02-01), Wycliffe
patent: 4457671 (1984-07-01), Watanabe

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