CENTRIFUGAL COMPRESSOR AND METHOD FOR PRODUCING SAME

Title:

CENTRIFUGAL COMPRESSOR AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2012/102146

Kind Code:

A1

Abstract:

A centrifugal compressor is provided with: an impeller; an impeller storage unit for storing a casing and the impeller; an intake port provided concentrically with the impeller; a ring-shaped channel provided so as to surround the impeller; a discharge port for connecting to the ring-shaped channel; a circular space provided around the intake port; a downstream slot for connecting the downstream end of the circular space and the impeller storage unit; and an upstream slot for connecting the upstream end of the circular space and the intake port. The downstream slot draws the curve of a cycle that displaces at a prescribed amplitude in the axis center direction of the intake port. When viewed in a direction perpendicular to the direction of the rotation axis of the impeller, the most upstream point on the center line of the downstream slot is positioned in the upstream end section of an impeller blade. This centrifugal compressor makes it possible to improve a surging suppression effect and expand operating range through a more effective casing treatment.

Inventors:

TAMAKI HIDEAKI (JP)

Application Number:

PCT/JP2012/050961

Publication Date:

August 02, 2012

Filing Date:

January 18, 2012

Export Citation:

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Assignee:

IHI CORP (JP)
TAMAKI HIDEAKI (JP)

International Classes:

F04D29/66; F04D29/44

Foreign References:

JP2001263296A	2001-09-26
EP1134427A1	2001-09-19
JPH05509142A	1993-12-16
JP2004332734A	2004-11-25
JP2008255996A	2008-10-23

Other References: