Airfoil tip squealer cooling construction
US6602052B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2001 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Oct 18, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D5/18
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An airfoil for a gas turbine includes a pressure sidewall and a suction sidewall, a tip cap, and a tip squealer. Cooling fluid flows from a hollow space within the airfoil through exit passages extending to the pressure side of the airfoil and to the tip cavity defined by the tip cap and the tip squealer. The tip squealer includes a smooth contour with curved and straight portions, allowing an even flow of the cooling fluid about the tip squealer and within the tip cavity. Furthermore, the exit passages are partially diffused and oriented at angles with respect to the radial direction. The smooth contour and shape of the exit passages avoids the formation of vortices and enhances film cooling of the tip squealer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.