公开(公告)号：US20090246030A1

公开(公告)日：2009-10-01

申请号：US12388063

申请日：2009-02-18

申请人： Kohei TANAKA ,  Yoshimasa CHIBA ,  Sadashi TANAKA ,  Koji HAYASHI ,  Tomohiro NARUSE ,  Takaki FUKUCHI ,  Takeshi KAZAMA

发明人： Kohei TANAKA ,  Yoshimasa CHIBA ,  Sadashi TANAKA ,  Koji HAYASHI ,  Tomohiro NARUSE ,  Takaki FUKUCHI ,  Takeshi KAZAMA

IPC分类号： F01D5/30

CPC分类号： F04D29/24

摘要： To provide a can manufacturing pump impeller in which a stress of a base portion of a blade is prevented from increasing while improving the strength of a joint portion of a hub and a boss. In order to reinforce a joint portion of a hub and a boss, a plate is jointed to the inside of an impeller. In order not to overlap a base portion of a blade and the plate with each other on the hub, an opening portion is provided in the plate around the base portion of the blade on the hub. As a shape of the opening portion, a semicircular shape, a semielliptical shape, a rectangular shape, or a trapezoidal shape can be selected. Further, as a plate shape, a flat plate structure, a shell structure, or a curved structure can be selected.

摘要翻译： 为了提供能够防止叶片的基部的应力的提高的罐式制造泵叶轮，同时提高轮毂和轮毂的接合部的强度。 为了加强轮毂和凸台的接合部分，将板连接到叶轮的内部。 为了不使轮毂上的叶片的基部和板彼此重叠，在板上围绕叶片的基部的毂上设置有开口部。 作为开口部的形状，可以选择半圆形，半椭圆形，矩形或梯形形状。 此外，作为板状，可以选择平板结构，壳结构或弯曲结构。