Multiple staged compressor with last stage airfoil cooling
US8721265B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2013 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Sep 23, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A high compression ratio compressor having multiple stages of airfoils to produce the high pressure rations, where the last stage airfoils are cooled by passing cooling air through the airfoils without discharging film cooling air. A portion of the compressed air from the discharge of the compressor is bled off and passed through a heat exchanger to preheat a fuel and to cool the compressed air. The cooled compressed air is then passed through the last stage airfoil of the compressor to provide cooling. The cooling air is then reintroduced back into the compressor at an earlier stage or passed through an airfoil in the turbine to provide cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.