Laser drilled holes for film cooling
US6744010B1 · kind B1 · utility
53Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1992 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Sep 21, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05B2260/202
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hole geometry and laser drilling technique for forming a shaped diffusing film coolant passage having a straight constant cross section metering portion which connects with a conical section which exits on the surface to be cooled. The metering portion of the hole provides for air quantity metering while the tapered portion provides a diffusion effect on the cooling air so that upon exit the cooling air remains attached to the surface to be cooled and thereby provide effective film cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.