Turbomachine
US5458457A · kind A · utility
24Cited by
4References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1993 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Aug 26, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/684
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a turbomachine having an impeller rotating in a casing, nozzles are provided for forming an annular layer of fluid flowing along the inner surface of the casing. The annular flow layer is formed continuously or intermittently under control by detecting the occurrence of unstable characteristics of the turbomachine or a precursor of unstable characteristics, created by conditions represented by a positively-sloped region of the head-capacity curve of the turbomachine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.