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US 2016/0257409 A1Published application
Air-conditioning system with a redundant feed of supply air
AssigneeLiebherr-Aerospace Lindenberg GmbH
InventorsFrank STEINMAIER, Norbert MAIDHOF
Life of this patent
Estimating the term…
Abstract
The invention relates to an air-conditioning system with a redundant feed of supply air comprising at least one pack which is supplied with air, with at least one valve being arranged in the feed for the air flow control. In accordance with the invention, an electrical flow control valve and a pneumatic flow control valve are arranged in parallel connection in front of the pack for the air flow control.
Claims11
1-11. (canceled)
An air-conditioning system, comprising:
- at least one pack which is supplied with air;
- a redundant valve system including an electrical flow control valve (EFCV), which only provides electrical air flow control, and a pneumatic flow control valve (PBV), which only provides pneumatic air flow control, the EFCV and PBV arranged in a parallel connection upstream of the pack, the EFCV comprising an electrically-controlled actuator unit and a first flap unit which is set via a first pressure membrane, and the PBV comprising a pneumatically-controlled actuator unit and a second flap unit which is set via a second pressure membrane;
- wherein if the EFCV fails, the flap unit of the EFCV is closed and the PBV is opened.
Dependencies are inferred from the claim text.