Water jet pump
US7001228B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2004 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Jul 23, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H2011/081
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A water jet pump is provided which reduces cavitation and thereby allows an improvement in pump efficiency. In a water jet pump in which an impeller driven for rotation and is provided in a cylindrical housing, an edge portion of the outer circumferential surface of the impeller that opposes the inner surface of the housing is formed with a radius of curvature. This structure reduces a variation in the pressure of a water stream passing between the outer circumferential surface of the impeller and the inner surface of the housing toward the impeller front surface side, thereby reducing the occurrence of cavitation and improving the pump efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.