公开(公告)号：US20090117790A1

公开(公告)日：2009-05-07

申请号：US12209614

申请日：2008-09-12

申请人： Hiroyuki MAKITA

发明人： Hiroyuki MAKITA

IPC分类号： B63H11/08 ,  F01D5/14 ,  F04F5/44

CPC分类号： B63H11/08

摘要： A water-jet pump includes a cylindrical housing and an impeller. The impeller is disposed in the cylindrical housing and is configured to be rotated in a rotating direction. The impeller includes a shaft body and plural blades. The plural blades are provided on an outer circumference of the shaft body. A front portion of one of the plural blades overlaps a rear portion of another of the plural blades adjacent to one of the plural blades when viewed in an axial direction of the shaft body. When viewed in the axial direction, at least a part of a rear edge of the rear portion is formed obliquely with respect to a radial direction of the impeller towards the rotating direction. A cutaway portion is formed in each of the plural blades between at least a part of the rear edge and the outer circumference.

摘要翻译： 喷水泵包括圆柱​​形壳体和叶轮。 叶轮设置在圆筒形壳体中并构造成沿旋转方向旋转。 叶轮包括轴体和多个叶片。 多个叶片设置在轴体的外周。 当沿轴体的轴向观察时，多个叶片中的一个叶片的前部与多个叶片中的另一个叶片的后部相邻重叠。 当沿轴向观察时，后部的后边缘的至少一部分相对于叶轮的径向相对于旋转方向倾斜地形成。 在后边缘的至少一部分和外周之间，在多个叶片的每一个上形成切口部分。