Centrifugal compressor with a flow-stabilizing casing

Details Centrifugal compressor with a flow-stabilizing casing Centrifugal compressor with a flow-stabilizing casing

1994-02-04

1995-11-14

Look, Edward K.

Rotary kinetic fluid motors or pumps

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

Open recirculation from and to blade set

4152083, 415 582, F04D 2942

Patent

active

054661188

ABSTRACT:
A centrifugal compressor with a flow-stabilizing casing includes an impeller (2) rotatably supported about a machine axis (7) and having a hub (9) with a plurality of impeller vanes (3) on its periphery; a compressor casing (4), which encloses the impeller, whose inner casing contour (4a) is matched to the outer contour of the impeller vanes (3) and, together with the hub (9), forms a flow duct extending between an axial inlet (10) and a radial outlet (11); and a plurality of elongated stabilizer slots (5), which extend in the flow direction in the inlet region of the flow duct, penetrate from the inner casing contour (4a) into the casing (4) and are distributed over the inner periphery of the casing (4). In order to extend the stable working range to smaller volume flows, the stabilizer slots (7) are arranged relative to the impeller vanes (3) in such a way that their front end facing toward the axial inlet (10) is located at a predetermined distance downstream of the vane leading edge (6).

REFERENCES:
patent: 4063848 (1977-12-01), Wiggins et al.
patent: 4212585 (1980-07-01), Swarden et al.
patent: 4594052 (1986-06-01), Niskanen
patent: 4743161 (1988-05-01), Fisher et al.
patent: 4781530 (1988-11-01), Lauterbach et al.
patent: 5236301 (1993-08-01), Palmer
patent: 5277541 (1994-01-01), Palmer

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