公开(公告)号：US20110194931A1

公开(公告)日：2011-08-11

申请号：US12701446

申请日：2010-02-05

申请人： Chester V. Swiatek ,  Mikhail Grigoriev ,  James Hitt ,  Noel Blair, JR.

发明人： Chester V. Swiatek ,  Mikhail Grigoriev ,  James Hitt ,  Noel Blair, JR.

IPC分类号： F04D29/44

CPC分类号： F04D29/44 ,  F04D29/444 ,  F04D29/666 ,  F05D2250/52

摘要： A system, in certain embodiments, includes a centrifugal compressor diffuser including a flow path having a first surface and a second surface defining opposite axial sides of the flow path. The centrifugal compressor diffuser also includes multiple vanes extending from the first surface to the second surface of the flow path. A first profile of each vane varies along an axial direction. The centrifugal compressor diffuser further includes multiple vanelets extending from the first surface toward the second surface in the axial direction. A first axial extent of each vanelet is less than a second axial extent of the flow path. In addition, a second profile of each vanelet varies along the axial direction and/or the vanelets form a non-periodic pattern around a circumference of the flow path.

摘要翻译： 在某些实施例中，系统包括离心压缩机扩散器，其包括具有第一表面的流动路径和限定流动路径的相对的轴向侧面的第二表面。 离心压缩机扩散器还包括从流动路径的第一表面延伸到第二表面的多个叶片。 每个叶片的第一轮廓沿轴向方向变化。 离心压缩机扩散器还包括沿轴向从第一表面向第二表面延伸的多个小叶片。 每个叶片的第一轴向范围小于流动路径的第二轴向范围。 此外，每个小叶的第二轮廓沿着轴向方向变化，和/或叶片围绕流动路径的圆周形成非周期性图案。