Geared gas turbine with oil scavenge ejector pump assist
US11668247B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2021 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Apr 16, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/98
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas turbine engine has a low pressure turbine driving a fan rotor through a gear reduction gearbox. The low pressure turbine has an input shaft driving a sun gear. The sun gear drives intermediate gears. There is an output shaft driven by one of a carrier and a ring gear in the gear reduction to in turn drive a fan drive shaft to drive the fan. A bearing compartment housing encloses the gear reduction gearbox. A fan shaft bearing supports the fan drive shaft. An oil supply system delivers oil to at least one of the sun gear, the intermediate gears and the ring gear. A scavenge system returns oil from the bearing compartment housing to a sump. An ejector pump communicates with a source of pressurized fluid to assist in driving oil from within the bearing compartment housing into a scavenge tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.