Oxygen concentrating apparatus

C - Chemistry – Metallurgy – 01 – B

Patent

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Details

C01B 13/02 (2006.01) A61M 16/10 (2006.01) B01D 53/04 (2006.01) G01N 29/18 (2000.01)

Patent

CA 2437031

An apparatus 150, for generating an oxygen enhanced gas by removing nitrogen gas from air, includes a compressor 156 absorption columns 152a and 152b for removing the nitrogen gas from the pressurized air supplied from the compressor 156, a flow rate measuring device 168 provided downstream of the absorption columns 152a and 152b, ultrasonic oxygen concentration measuring means 170 provided downstream of the flow rate measuring device 168. The ultrasonic oxygen concentration measuring means 170 includes means for generating a correction coefficient for the ratio between oxygen and argon gases contained in the oxygen enhanced gas on the basis of the flow rate of the oxygen enhanced gas measured.

L'invention concerne un dispositif d'enrichissement en oxygène (150) produisant un gaz enrichi en oxygène par élimination de l'azote contenue dans l'air. Ce dispositif comprend un compresseur (156), des tubes d'adsorption (152a, 152b) destinés à éliminer l'azote contenue dans l'air pressurisé provenant du compresseur (156), un mesureur de flux (168) disposé sur le côté aval des tubes d'adsorption (152a, 152b), et un moyen de mesure par ultrasons de densité d'oxygène (170) disposé sur le côté aval du mesureur de flux (168), ce moyen de mesure par ultrasons de densité d'oxygène (170) comprenant également un moyen de production de coefficient de correction destiné à produire un coefficient de correction pour le rapport oxygène/argon du gaz enrichi en oxygène, en fonction du flux de gaz d'oxygène enrichi, la densité d'oxygène du gaz enrichi en oxygène pouvant être corrigée en fonction du coefficient de correction produit par ce moyen de production de coefficient de correction.

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