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US 2015/0104524 A1Published application
Portable Oxygen Enrichment Device and Method of Use
AssigneeSeparation Design Group LLC
InventorsStephen Douglas Galbraith, David K. Walker, Kenneth J. McGowan, Elise N. DePetris, Judith C. Galbraith
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Abstract
Lightweight, small, portable devices and methods are disclosed that provide oxygen-enriched air using an ultra rapid adsorption cycle based on advanced molecular sieve materials.
Claims28
1-34. (canceled)
A method, comprising:
- compressing an ambient air flow comprising oxygen and nitrogen to form a compressed air flow;
- transporting said compressed flow through an adsorbent bed in a device to adsorb at least a portion of said nitrogen to form an oxygen-enriched gas flow;
- wherein the pressure drop across said adsorbent bed is less than about 50 kPa;
- and
- wherein said device is portable;
- removing said oxygen-enriched gas flow to form an oxygen-enriched product;
- transporting said oxygen-enriched product to first vessel and second vessel;
- retaining a defined volume of oxygen-enriched product in second vessel;
- desorbing from said adsorbent bed said portion of said nitrogen;
- purging said adsorbent bed with product gas from first vessel;
- and
- permitting a substantially continuous delivery of a volume of said oxygen-enriched product to a user from second vessel.
9 more elements
37-38. (canceled)
A method, comprising:
- compressing in a device an ambient air flow comprising oxygen and nitrogen to form a compressed air flow;
- transporting said compressed flow through an adsorbent bed and adsorbing at least a portion of said nitrogen to form an oxygen-enriched gas flow;
- wherein the pressure drop across said adsorbent bed is less than about 50 kPa;
- removing said oxygen-enriched gas flow to form an oxygen-enriched product;
- transporting said oxygen-enriched product to first vessel and second vessel;
- retaining a defined volume of oxygen-enriched product in second vessel;
- desorbing from said adsorbent bed said portion of said nitrogen;
- purging said adsorbent bed with product gas from first vessel;
- and
- repeating said previous steps until a predetermined pressure is achieved in said second vessel.
7 more elements
(canceled)
51-53. (canceled)
Dependencies are inferred from the claim text.