Ultra rapid cycle portable oxygen concentrator

A portable oxygen concentrator, comprising:

• at least one removable module comprising
• a housing;
• at least one adsorbent bed contained in said housing;
• wherein said adsorbent bed comprises at least one molecular sieve material;
• wherein said molecular sieve material has a substantially spherical shape;
• wherein the ratio of the length of said absorbent bed to the diameter of said absorbent bed is less than about 4.8:1;
• and
• wherein said absorbent bed is capable of a ratio of product flow rate to mass of said molecular sieve material of greater than 3.3 ml/min/g;
• a compressor;
• a manifold to control gas flow into and out of said removable module;
• at least one removable battery cell;
• wherein said portable oxygen concentrator weighs less than about 5 kg;
• and
• wherein said portable oxygen concentrator is capable of producing up to 3 liters of oxygen per minute at 22° C. and 1 atmosphere pressure.

A portable oxygen concentrator, comprising:

• at least one removable module comprising
• a housing;
• at least one adsorbent bed contained in said housing;
• wherein said adsorbent bed comprises at least one molecular sieve material;
• wherein said molecular sieve material has a substantially spherical shape;
• wherein the ratio of the length of said absorbent bed to the diameter of said absorbent bed is less than about 4.8:1;
• and
• wherein said absorbent bed is capable of a ratio of product flow rate to mass of said molecular sieve material of greater than 3.3 ml/min/g;
• a compressor;
• a manifold to control gas flow into and out of said removable module;
• and
• at least one removable battery cell;
• wherein said portable oxygen concentrator is capable of producing up to 5 liters of oxygen per minute at 22° C. and 1 atmosphere pressure.