发明申请
- 专利标题: CENTRIFUGAL COMPRESSOR HAVING AN ASYMMETRIC SELF-RECIRCULATING CASING TREATMENT
- 专利标题(中): 具有不对称自回收箱处理的离心式压缩机
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申请号: US13578137申请日: 2011-02-03
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公开(公告)号: US20120308372A1公开(公告)日: 2012-12-06
- 发明人: Xinqian Zheng , Yun Lin , Yangjun Zhang , Mingyang Yang , Takahiro Bamba , Hideaki Tamaki
- 申请人: Xinqian Zheng , Yun Lin , Yangjun Zhang , Mingyang Yang , Takahiro Bamba , Hideaki Tamaki
- 申请人地址: CN Beijing JP Tokyo
- 专利权人: TSINGHUA UNIVERSITY,IHI CORPORATION
- 当前专利权人: TSINGHUA UNIVERSITY,IHI CORPORATION
- 当前专利权人地址: CN Beijing JP Tokyo
- 优先权: CN201010110225.4 20100209; CN201010110248.5 20100209
- 国际申请: PCT/JP2011/052272 WO 20110203
- 主分类号: F04D29/42
- IPC分类号: F04D29/42
摘要:
A centrifugal compressor includes an asymmetric self-recirculating casing treatment that includes, on an inner face of a casing 10, a suction ring groove 1, a ring guide channel 2 and a back-flow ring groove 3 to form a self-recirculating channel. An axial-direction position Sr from an upstream end face of the suction ring groove to an impeller full blade leading edge 4 or a width br of the suction ring groove 1 is represented as A(α·D−β·D)2+A0 and is distributed in a parabolic shape in a circumferential direction. An initial phase angle θ0 is in a range of 0≦θ0≦2π. A circumferential angle α of the casing has a definition range of θ0≦α≦θ0+2λ. In the expression, A denotes a parameter of the parabola in the axial-direction position Sr or the width br, and A0 denotes an extreme of the axial-direction position Sr or the width br when corresponding circumferential angle β and the α are equal at an extreme point of distribution of the parabola.