Impeller and diffuser with a rotating and converging hub
US7789617B2 · kind B2 · utility
2Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2006 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Oct 13, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/448
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A suction stage for a pump with a centrifugal wheel, the suction stage including a rotational impeller equipped with a hub and arranged upstream of the centrifugal wheel, the suction stage further including a diffuser arranged between the impeller and the centrifugal wheel, the diffuser including a plurality of blades. The hub has a downstream surface extending axially so as to converge toward the centrifugal wheel, and the blades of the diffuser have free ends, the blades protruding radially toward the downstream surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.