Patent ID: 9254493
Filing Date: 2016-02-09
CPC Classification: B01D,B03C,C01B

Claim Text:
1. An oxygen-enriched air producing device that produces oxygen-enriched air, an oxygen concentration of the oxygen-enriched air being higher than that of input air, the oxygen-enriched air producing device comprising: a hermetically sealed container unit that surrounds a specified pressure reduction region so as to hermetically seal the pressure reduction region; a flow channel tube, at least part of the flow channel tube extending through the hermetically sealed container unit; an air supply unit that supplies air into the flow channel tube; a pressure reducing unit that reduces pressure in the hermetically sealed container unit so that the pressure in the hermetically sealed container unit is lower than that in the flow channel tube; and a magnetic field forming unit that forms a magnetic field in the flow channel tube, wherein the flow channel tube has a region therein where the air supplied by the air supply unit flows at least under laminar flow conditions, and wherein a tube wall of a pressure reduction region portion of the flow channel tube, the pressure reduction region portion being positioned in the hermetically sealed container unit, is formed of a non-magnetic material that allows part of the air flowing in the pressure reduction region portion to pass through the tube wall to be exhausted to an outside of the pressure reduction region portion when the pressure in the hermetically sealed container unit is lower than that in the pressure reduction region portion.