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PASSIVE AUTOMATIC DRAINAGE FOR AN OVER WING DOOR TO ALLOW COMPRESSION EVEN WITH FROZEN FLUID INSIDE

IP.com Disclosure Number: IPCOM000250588D
Publication Date: 2017-Aug-04
Document File: 2 page(s) / 119K

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The IP.com Prior Art Database

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Passive Automatic Drainage: IP.COM

Abstract

PASSIVE AUTOMATIC DRAINAGE FOR AN OVER WING DOOR TO ALLOW COMPRESSION EVEN WITH FROZEN FLUID INSIDE

The present idea concerns the mitigation of the influence of frozen water on Door seals in general and in particular on Over Wing Doors (OWD). The solution came around during discussions on how to mitigate water ingress freezing in a pressurized door seal as frozen water can limit door functions.

In the present solution the lowest part of the seal is designed as a separated and closed compartment to which a vertical pipe element ("straw") is added.

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PASSIVE AUTOMATIC DRAINAGE FOR AN OVER WING DOOR TO ALLOW COMPRESSION EVEN WITH FROZEN FLUID INSIDE

The present idea concerns the mitigation of the influence of frozen water on Door seals in general and in particular on Over Wing Doors (OWD). The solution came around during discussions on how to mitigate water ingress freezing in a pressurized door seal as frozen water can limit door functions. If the OWD is closed via an inward movement of the door, a seal inside the door frame is compressed. If the seal contains water (e.g. due to a leakage or via other water ingress) this leads to the risk that – if the water freezes inside of the seal – the seal cannot be compressed with a reasonable load. If the applied load is too high, a destruction or damage of the seal or even the door frame cannot be excluded. At least, the door operation might be limited It is the intention of the present document to show a simple solution that limits the amount of water that could be frozen inside of the seal. Furthermore, the proposed solution has no risk in terms of opening events in adverse conditions. In the present solution the lowest part of the seal is designed as a separated and closed compartment to which a vertical pipe element (“straw”) is added. This straw is located at the lowest area or point of the closed compartment and serves as resp. creates a pump that automatically presses water out of the lowest part of the seal if the outside pressure decreases. In turn, it is refilling the...