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1. (WO2018198808) CENTRIFUGAL COMPRESSOR

Pub. No.:    WO/2018/198808    International Application No.:    PCT/JP2018/015443
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 13 01:59:59 CEST 2018
IPC: F04D 29/44
F04D 17/10
F04D 29/66
Applicants: IHI CORPORATION
株式会社IHI
Inventors: UENO, Takahiro
上野 貴大
Title: CENTRIFUGAL COMPRESSOR
Abstract:
Provided is a centrifugal compressor comprising: an impeller (compressor impeller 10); a primary flow path 12 that has the impeller disposed therein and extends in a direction of a rotation axis of the impeller; a secondary flow path 21 that is formed radially outside the impeller from the primary flow path 12; an upstream communication path 23 that communicates the secondary flow path 21 and the primary flow path 12 with each other; a downstream communication path 22 that communicates the secondary flow path 21 and the primary flow path 12 with each other at the impeller side with respect to the upstream communication path 23; and a partition portion (rib 6g, fin 20) that maintains a gap Sa within the secondary flow path 21 and partitions the secondary flow path 21 in a circumferential direction, the gap Sa being longer than a flow path width of the downstream communication path 22.