公开(公告)号：US06595746B1

公开(公告)日：2003-07-22

申请号：US09647531

申请日：2001-01-30

申请人： Akira Goto ,  Kosuke Ashihara ,  Takaki Sakurai ,  Masatoshi Suzuki ,  Mehrdad Zangeneh

发明人： Akira Goto ,  Kosuke Ashihara ,  Takaki Sakurai ,  Masatoshi Suzuki ,  Mehrdad Zangeneh

IPC分类号： F04D2944

CPC分类号： F04D29/444 ,  F04D29/448

摘要： A highly efficient mixed flow pump can prevent flow separation which is likely to occur in a corner portion of a flow passage of a diffuser section. The mixed flow pump includes a casing having an axis and defining an impeller section and a diffuser section disposed downstream of the impeller section with stationary diffuser blades protruding from a hub. The diffuser blades are formed so that an angular difference, between a hub blade angle and a casing blade angle, is chosen to conform to a specific distribution pattern along a flow passage of the diffuser section.

摘要翻译： 高效混合流量泵可以防止在扩散器部分的流动通道的角部可能发生的流动分离。 混合流量泵包括具有轴线并限定叶轮部分的壳体和设置在叶轮部分下游的扩散器部分，其具有从轮毂突出的固定扩散器叶片。 扩散器叶片形成为使得在轮毂叶片角度和壳体叶片角度之间的角度差被选择成符合沿着扩散器部分的流动通道的特定分布图案。

公开(公告)号：US06508626B1

公开(公告)日：2003-01-21

申请号：US09700842

申请日：2001-01-04

申请人： Takaki Sakurai ,  Hideomi Harada ,  Kosuke Ashihara ,  Mehrdad Zangeneh ,  Akira Goto

发明人： Takaki Sakurai ,  Hideomi Harada ,  Kosuke Ashihara ,  Mehrdad Zangeneh ,  Akira Goto

IPC分类号： F01D522

CPC分类号： F04D29/2277 ,  F04D29/284

摘要： Disclosed is an impeller for a turbomachine. The impeller comprises a hub, full blades equidistantly disposed on the hub in a circumferential direction, and a splitter blade disposed between each adjacent two of the full blades. The splitter blade is shaped in such a way that a spanwise distribution of a pitchwise position of a leading edge of the splitter blade is determined according to a spanwise and pitchwise non-uniformity distribution of fluid velocity of a fluid flowing into the splitter blade, whereby a non-dimensional circumferential position of a leading edge of the splitter blade varies in a spanwise direction.

摘要翻译： 公开了一种用于涡轮机的叶轮。 叶轮包括轮毂，沿圆周方向等距地设置在轮毂上的全部叶片，以及设置在每个相邻的两个完整叶片之间的分流叶片。 分流叶片成形为使得分流叶片的前缘的俯仰位置的翼展方向分布根据流入分流叶片的流体的流体速度和间距不均匀分布来确定，由此 分流叶片的前缘的无量纲圆周位置在翼展方向上变化。