Flow energizing system for turbomachinery
US5779440A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1997 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Jan 6, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/914
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention is directed to a flow energizing system for turbomachinery including means for forming a plurality of rotating jet-sheet blades upstream of an impeller and a component for circumferentially varying the blade geometries of the plurality of rotating jet-sheet blades. The a component for forming a plurality of rotating jet-sheet blades includes: impeller shroud 26 having upstream-projecting axial extension 28 attached coaxially with and projecting upstream of shroud 26; recirculation chamber 30 surrounding shroud and axial extension, 26 and 28; recirculation flow inlet 32 formed by a gap between housing 12 and downstream ends, 20a and 26a, respectively, of impeller 20 and shroud 26, for allowing backflow to pressurize recirculation chamber 30; and a plurality of generally axially-extending jet-sheet slots 34 circumferentially distributed around a periphery of axial extension 28 and passing therethrough. The component for circumferentially varying blade geometries of the plurality of rotating jet-sheet blades includes axially-extending stationary liner 36 disposed concentric with and radially inward of axial extension 28 wherein liner 36 is shaped and configured for selec…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.