Pressure variation absorber

Details Pressure variation absorber Pressure variation absorber

1979-02-23

1983-10-25

Casaregola, Louis J.

Rotary kinetic fluid motors or pumps

With sound or vibratory wave absorbing or preventing means...

181225, F04D 2966

Patent

active

044115920

ABSTRACT:
Pressure variation absorbing apparatus is mounted adjacent to a moving fluid stream in the diffuser of a centrifugal compressor for absorbing both acoustic and aerodynamic pressure variations. The absorbing apparatus when mounted as a part of the diffuser wall of a centrifugal compressor not only reduces acoustic noise but also absorbs aerodynamic pressure variations increasing the efficency of the compressor and simultaneously reducing the rate of flow at which surge occurs thereby enlarging the operational flow range of the compressor. A method of absorbing pressure variations in a moving fluid stream is also disclosed.

REFERENCES:
patent: 2225398 (1940-12-01), Hamblin
patent: 2285976 (1942-06-01), Huitson
patent: 2925952 (1960-02-01), Garve
patent: 3286914 (1966-11-01), Baverstock
patent: 3289921 (1966-12-01), Soo
patent: 3540574 (1970-11-01), Coward
patent: 4174020 (1979-11-01), Challis

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