Fast acting aircraft engine bleed air check valve
US8015825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2007 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Jan 18, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7898
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine air supply system includes an air source, which is a gas turbine engine in one example. A component, such as an environmental control system component, is interconnected to the air source by a conduit that includes a supply flow direction. A check valve is arranged in the conduit. The check valve includes a valve portion moveable in the supply flow direction from a closed position to an open position. The closed position is arranged at an acute angle relative to the supply flow direction. The check valve includes first and second valve portions that are hemi-elliptical in shape. The first and second valve portions are non-planar and arranged approximately 90 degrees apart when in the closed position. The first and second valve portions move toward one another from the closed position to the open position. Each of the first and second valve portions moves approximately 30-40 degrees from the open position to the closed position in response to a stall condition, which significantly reduces the response time and forces generated by the first and second valve portions when closing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.