Bellows-enabled bleed valve
US10920902B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 2018 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Apr 23, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/66
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A bleed valve for use in a gas turbine engine of an aircraft includes a high-pressure cavity coupled to a valve housing, which includes a valve seat configured to be sealed by a system poppet. The system poppet is operably coupled to a shaft that is itself coupled to a movable end of a bellows, which is positioned within the high-pressure cavity. The opening and closing of the valve is controlled by at least one cavity air port that is configured to inject a first fluid into the high-pressure cavity, thus compressing the bellows, and by a servo air port that is configured to inject a second fluid directly into the bellows, to expand it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.