Turbine airfoil with micro cooling channels
US8317475B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2010 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Jun 13, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/304
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air cooled turbine airfoil having micro cooling air passages formed within the airfoil that is of such size that the present day investment coating process cannot be used. The internal cooling air features of the airfoil are formed using the Tomo Lithographic Molding (TLM) process. The TLM process is a low pressure casting process that can produce precise micro-features integral to macro-scale structures using any of the exotic alloys or other metallic materials currently being used in airfoil production. The normal internal cooling air passages as well as very small features such as trip strips, pin fins, dimples, pedestals and enclosed passages such as film holes can be produced using the TLM process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.