Air cooled turbine airfoil with sequential cooling
US8096766B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 2009 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Aug 10, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air cooled turbine airfoil, such as a rotor blade, with a sequential impingement cooling circuit that provides a high level of cooling with a low amount of cooling air. The airfoil is formed of a spar and shell construction in which the spar is formed from a series of alternating layers that form the cooling circuit with the shell forming the gap for the impingement cooling channels. Two different layers form the impingement cooling channels with a third layer being a separation layer. The impingement cooling circuit includes a first impingement circuit to cooling a forward half of the pressure side wall, a second impingement cooling circuit to cool the aft half of the pressure side wall, and a third impingement cooling circuit to cool the entire suction side wall. The spent cooling air is collected and channeled through a series of exit holes in the trailing edge to discharge the cooling air form the airfoil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.