Centrifugal compressor having an asymmetric self-recirculating casing treatment

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United States of America Patent

PATENT NO 9816522
SERIAL NO

13578188

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Abstract

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A centrifugal compressor has a casing 7. In the casing 7 is formed a back-flow channel 9 to return fluid from a downstream position of an impeller full blade leading edge 6a to an upstream position of the impeller full blade leading edge 6a. The back-flow channel 9 includes a suction ring groove 9a and a back-flow ring groove 9b. The suction ring groove opens at the downstream position on the inner face 7a of the casing 7, and extends in the circumferential direction. The back-flow ring groove opens at the upstream position on the inner face 7a, and extends in the circumferential direction. Distribution in the circumferential direction of the axial-direction position of the suction ring groove 9a or a width of the suction ring groove 9a is asymmetric with reference to the rotation axis.

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Patent Owner(s)

Patent OwnerAddress
TSINGHUA UNIVERSITY100084 TSINGHUA YUAN BEIJING HAIDIAN DISTRICT BEIJING CITY BEIJING CITY 100084
IHI CORPORATION1-1 TOYOSU 3-CHOME KOTO-KU TOKYO 1358710 JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bamba, Takahiro Tokyo, JP 15 66
Lin, Yun Beijing, CN 119 2554
Tamaki, Hideaki Tokyo, JP 8 42
Yang, Mingyang Beijing, CN 10 42
Zhang, Yangjun Beijing, CN 9 34
Zheng, Xinqian Beijing, CN 6 30

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