Oxygen enriched air

Details Oxygen enriched air Oxygen enriched air

B - Operations, Transporting

01

D

183/23

B01D 53/02 (2006.01) B01D 53/04 (2006.01) B01D 53/047 (2006.01) A62B 7/14 (2006.01)

Patent

CA 1059040

ABSTRACT The invention provides apparatus for producing oxygen-enriched air for respiration which apparatus comprises at least one bed containing an adsorbent which preferentially adsorbs nitrogen from air, an air inlet at one end of the bed, an oxygen-enriched air product outlet line connected to the other end of the bed, reservoir in the outlet line for storing pressurised product gas, a pressure regulator located in the outlet line downstream of the reservoir and adapted to regulate the pressure of product gas in the outlet line downstream of the regulator to a predetermined value, a restriction device located in the portion of the outlet line between the bed and the reservoir to control gas flow in such portion of the outlet line, a valved vent line from the air inlet end of the, or each, bed to permit release of any superatmospheric pressure in such bed and a valved line leading from the air inlet end of the or each, bed to a vacuum pump to permit evacuation of such bed.

242891

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