Oil purge system for a mid turbine frame
US8944749B2 · kind B2 · utility
16Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2012 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Aug 18, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D25/18
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An oil purge system for a mid turbine frame (MTF) of a gas turbine engine has an oil transfer tube surrounded by a heat shield tube. The oil transfer and heat shield tubes extend at their respective inner ends downwardly from an oil port of a bearing housing and terminate at their respective outer ends projecting outwardly from an annular wall of an outer case of the MTF. Oil leaked from the oil port is purged by pressurized air through an annular cavity formed between the oil transfer and heat shield tubes, and is discharged out of the MTF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.