An oxygen concentration device (1) comprises: a dehumidifying mechanism (11a) which dehumidifies air (AIR) which is taken in from outside a compressor (12) which is disposed downstream of the dehumidifying mechanism (11a) and compresses the air (AIR) which is dehumidified with the dehumidifying mechanism (11a) a nitrogen adsorption mechanism (13) which adsorbs nitrogen included in the air (AIR) which is compressed with the compressor (12) into a catalyst, and generates high-concentration oxygen (OXY) and a humidifying mechanism (11b) which humidifies the high-concentration oxygen (OXY) which is generated with the nitrogen adsorption mechanism (13) before discharging said high-concentration oxygen (OXY) outside. The dehumidifying mechanism (11a) and the humidifying mechanism (11b) are formed integrally with a water-permeable membrane (11c) separating the air (AIR) which is taken in from outside and the high-concentration oxygen (OXY) which is generated with the nitrogen adsorption mechanism (13), and the moisture content of the air (AIR) of the dehumidifying mechanism (11a) is moved to the high-concentration oxygen (OXY) of the humidifying mechanism (11b) via the membrane (11c).Linvention concerne un dispositif de concentration doxygène (1) qui comprend : un mécanisme de déshumidification (11a) qui déshumidifie lair (AIR) qui provient de lextérieur un compresseur (12) qui est disposé en aval du mécanisme de déshumidification (11a) et comprime lair (AIR) qui est déshumidifié à laide du mécanisme de déshumidification (11a) un mécanisme dadsorption dazote (13) qui adsorbe lazote compris dans lair (AIR) qui est comprimé à laide du compresseur (12) dans un catalyseur, et génère de loxygène à forte concentration (OXY) et un mécanisme dhumidification (11b) qui humidifie loxygène à forte concentration (OXY) qui est généré à laide du mécanisme dadsorption dazote (13) avant la décharge dudit oxygène à forte concentration (OXY) à lextérieur. Le mécanisme de déshumidification
