Axial-flow type hydraulic machine
US6736594B2 · kind B2 · utility
22Cited by
4References
15Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 27, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Jun 27, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/688
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In an axial flow hydraulic machine, a plural number of grooves 5 are formed on an inner surface of a casing, directed into a pressure gradient direction, for connecting between an inlet side of an impeller 1 and an inside of blade residing region on the casing inner surface. With movement of movable members 6 provided on the casing inner surface, the grooves appear within the blade residing region in an unstable operation region, while the grooves cause no interference with the blades of the impeller in a stable operation region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.