Portable oxygen concentration system and method of using the same

A portable oxygen concentrator system adapted to be readily transported by a user, comprising;

• an internal rechargeable energy source;
• an air separation device powered by said energy source and adapted to convert ambient air into concentrated oxygen gas for said user, the air separation device including a plurality of adsorber columns and a rotating valve, the rotating valve relatively rotatable with respect to the plurality of adsorber columns to provide valving action for selectively transferring fluids through the plurality of adsorber columns for converting ambient air into concentrated oxygen gas for said user,
• wherein the portable oxygen concentrator system weighs 2-15 pounds and the adsorber columns each including a layered adsorbent bed having two or more distinct adsorbent material layers.

A portable oxygen concentrator system adapted to be readily transported by a user, comprising:

• an internal rechargeable energy source;
• an air separation device powered by said energy source and adapted to convert ambient air into concentrated oxygen gas for said user, the air separation device including a plurality of adsorber columns each including a feed end and a product end and at least one valve operable with respect to the plurality of adsorber columns to provide valving action for selectively transferring fluids through the plurality of adsorber columns for convening ambient air into concentrated oxygen gas for said user,
• wherein the portable oxygen concentrator system weighs 2-15 pounds and tie adsorber columns each including a layered adsorbent bed having two or more distinct adsorbent material layers, the two or more distinct adsorbent material layers including at least a water adsorption layer and a nitrogen adsorption layer, the water adsorption layer located closer to the feed end than the nitrogen adsorption layer.