Patent ID: 8052087

Claim:
A device for improving the breathing air quality for the crew and/or the passengers in an aircraft cabin including a locally delimited area and a region surrounding the locally delimited area, the device comprising: an oxygen source, a water source, and a feed line, wherein the feed line is connectable to the oxygen source and the water source in order to oxygenate and/or humidify air that is introduced into the feed line, wherein the feed line is further connected to an inlet port of the locally delimited area of the aircraft cabin and adapted so as to feed oxygenated and/or humidified air having a first oxygen partial pressure to the locally delimited area of the aircraft cabin during normal operation of the aircraft, the first oxygen partial pressure being higher than a second oxygen partial pressure located in the region surrounding the locally delimited area, and wherein the feed line feeds oxygenated and/or humidified air to the locally delimited area of the aircraft cabin at a third oxygen partial pressure that is higher than the first oxygen partial pressure during emergency operation of the aircraft, such that the feed line is used as an emergency oxygen supply system during depressurization of the aircraft cabin.