The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 2015
Filed:
Feb. 03, 2011
Xinqian Zheng, Beijing, CN;
Yun Lin, Beijing, CN;
Yangjun Zhang, Beijing, CN;
Mingyang Yang, Beijing, CN;
Takahiro Bamba, Tokyo, JP;
Hideaki Tamaki, Tokyo, JP;
Xinqian Zheng, Beijing, CN;
Yun Lin, Beijing, CN;
Yangjun Zhang, Beijing, CN;
Mingyang Yang, Beijing, CN;
Takahiro Bamba, Tokyo, JP;
Hideaki Tamaki, Tokyo, JP;
IHI Corporation, Tokyo, JP;
Tsinghua University, Beijing, CN;
Abstract
A centrifugal compressor includes an asymmetric self-recirculating casing treatment that includes, on an inner face of a casing, a suction ring groove, a ring guide channeland a back-flow ring grooveto form a self-recirculating channel. A position or a width of the suction ring grooveis distributed in an arc shape in a circumferential direction, and the arc has a center angle α in a range of 0<α≦30°.