| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pump device capable of suppressing pulsation of fluid discharged on a radial direction outer side of a runner. <P>SOLUTION: A leakage-flow flow path 24 in which fluid leaks and flows from the outer periphery of the runner 2 to a radial direction inner side is provided between one axial direction end face of a runner 2 and a casing 3. Each blade 11 of the runner 2 is provided with: a base side path 25 extending in a runner axial direction of each blade 11 from the leakage-flow flow path 24; and a radial direction path 26 extending from the base side path 25 to the distal end face of each blade 11. The fluid which flows into the leakage-flow flow path 24 from the outer periphery of the runner 2 is made to flow into the base side path 25 and the radial direction path 26, and is discharged from the distal end face of each blade 11 by centrifugal force accompanying the turning of each blade 11. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
