Centrifugal compressor

Details Centrifugal compressor Centrifugal compressor

1978-01-20

1980-07-15

Casaregola, Louis J.

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

Cross flow runner

415206, 415207, 415219C, F04D 2944

Patent

active

042125855

ABSTRACT:
An improvement for extending the stable operating range of a centrifugal compressor comprises a circumferentially extending series of slots adjacent the leading edges of a series of compressor vanes such that there is relative motion between the series of slots and the vanes as the compressor impeller is driven in rotation.

REFERENCES:
patent: 1663998 (1928-03-01), Schmidt
patent: 2814434 (1957-11-01), Boyd
patent: 2881972 (1959-04-01), Feilden
patent: 2925952 (1960-02-01), Garre
patent: 3481531 (1969-12-01), MacArthur et al.
patent: 3893787 (1975-07-01), Jones
patent: 4063848 (1977-12-01), Wiggins et al.
Wenzel, et al., "Effect of Casing Treatment on Performance of a Multistage Compressor", Jan., 1975; (NASA).
Takata, et al., "Study on the Mechanism of Stall Margin Improvement of Casing Treatment", Nov. 22, 1974; (ASME).
Horlock, et al., "Propagating Stall in Compressors with Porous Walls", Dec. 2, 1974; (ASME).
Fabri, et al., "Effect of Outer Casing Treatment and Tip Clearance on Stall Margin of a Supersonic Rotating Cascade", Dec. 2, 1974; (ASME).
Holman, et al., "Effects of Casing Treatment on a Small, Transonic Axial-Flow Compressor, Jul. 23, 1975; (ASME).

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