Aircraft breathing system using obogs

A - Human Necessities – 62 – B

Patent

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Details

A62B 7/14 (2006.01) B64D 13/02 (2006.01)

Patent

CA 2715435

A device for delivering a breathing gas to an on-demand breathing mask (23) comprises - an Onboard Oxygen Generator (1 ) comprising an oxygen-rich gas outlet end; - compressor means (7) comprising inlet means (6) and outlet means (12), said inlet means being connected to oxygen-rich gas outlet end of said Onboard Oxygen Generator (1 ) for receiving said gas, said compressor means being operable to increase the pressure of said gas for delivery from said outlet means to the on-de-mand breathing mask. The device further comprises a connecting means (17) to connect said compressor outlet means (12) to said compressor inlet means (6) so that oxygen-rich gas in excess at the outlet means is redirected to the inlet means.

La présente invention concerne un dispositif servant à fournir un gaz respiratoire à un masque respiratoire fonctionnant à la demande (23). Ce dispositif comprend, d'une part un générateur d'oxygène (1) comprenant une extrémités de sortie pour gaz enrichi en oxygène, et d'autre part un compresseur (7) comprenant des orifices d'entrée (6) et des orifices de sortie (12). Ces orifices d'entrée sont raccordés à l'extrémité de sortie de gaz enrichi en oxygène du générateur d'oxygène (1) de façon à recevoir ce gaz. Le compresseur sert à augmenter la pression du gaz pour alimenter depuis l'orifice de sortie le masque respiratoire fonctionnant à la demande. Le dispositif comprend en outre un raccord permettant de brancher sur l'orifice d'entrée du compresseur (6) les orifices de sortie de ce même compresseur (12), de façon à renvoyer sur l'orifice d'entrée l'excédant de gaz enrichi en oxygène arrivant à l'orifice de sortie.

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