COMPRESSOR HOUSING AND CENTRIFUGAL COMPRESSOR - MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD

Title:

COMPRESSOR HOUSING AND CENTRIFUGAL COMPRESSOR

Document Type and Number:

WIPO Patent Application WO/2022/049779

Kind Code:

A1

Abstract:

This compressor housing, in which an intake port side in the axial direction of a centrifugal compressor is defined as the front side, and the side opposite to the intake port side in the axial direction is defined as the rear side, comprises: a shroud surface including a surface facing a distal end of an impeller blade of an impeller with a predetermined gap therebetween; a front-side inner circumferential surface which is formed on the front side in the axial direction of the shroud surface, and positioned outward from a front end of the shroud surface in the radial direction; and a plurality of grooves formed in the front-side inner circumferential surface with gaps therebetween in the circumferential direction, wherein each of the plurality of grooves includes an inclined portion, the depth of which gradually increases toward a rotation direction of the impeller, and a step portion, which is formed on a downstream end in the rotation direction of the inclined portion.

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Inventors:

IWAKIRI KENICHIRO (JP)
KANZAKA TADASHI (JP)
FUJITA YUTAKA (JP)

Application Number:

PCT/JP2020/033826

Publication Date:

March 10, 2022

Filing Date:

September 07, 2020

Export Citation: