Oxygen concentration system utilizing pressurized air

An oxygen concentration system for producing oxygen from pressurized air, said system comprising:

• an electrochemical oxygen generator, said generator having an outer surface and selectively extracting oxygen from air by an electrochemical reaction;
• a first enclosure having a top end and a bottom end and an inward surface and an outward surface, said generator contained within said first enclosure;
• a second enclosure having a top end and a bottom end and an inward surface and an outward surface, said first enclosure contained within said second enclosure;
• a third enclosure having a top end and a bottom end and an inward surface and an outward surface, said second enclosure contained within said third enclosure;
• a first annulus formed between said outer surface of said generator and said inner surface of said first enclosure;
• a second annulus formed between said outward surface of said first enclosure and said inward surface of said second enclosure;
• a third annulus formed between said outward surface of said second enclosure and said inward surface of said third enclosure;
• and,
• an orifice in said third enclosure near said top end of said third enclosure, pressurized air entering orifice said and travelling downwardly in said third annulus, upward in said first annulus, and downward in said second annulus, and exiting said oxygen concentration system through said second annulus.

An oxygen generation system suitable for replenishing oxygen storage cylinders on aircraft, said system comprising:

• a plurality of electrochemical oxygen generators, said generators being arranged in a hexagonal array and selectively producing oxygen from air by an electrochemical reaction, said generators having an outer surface;
• a first enclosure, said first enclosure having top and bottom ends and inward and outward surfaces, said plurality of generators received within said first enclosure, said first enclosure being thermally insulated to keep heat generated by said generators within said first enclosure, said top end of said first enclosure being open, said bottom end comprising an outer bottom dome, an apex of said outer bottom dome comprising an orifice,
• a second enclosure having top and bottom ends and inward and outward surfaces, said first enclosure being concentrically received within said second enclosure, said top end comprising an inner upper dome, said inner upper dome being non-insulating and having a reflective surface;
• a third enclosure having top and bottom ends and inward and outward surfaces, said second enclosure being concentrically received within said third enclosure, said top end of said third enclosure comprising an outer upper dome, an apex of said outer upper dome terminating in an orifice;
• a first annulus formed by said outer surface of said plurality of generators and said inward surface of said first enclosure;
• a second annulus formed by said outward surface of said first enclosure and said inward surface of said second enclosure;
• a third annulus formed by said outward surface of said second enclosure and said inward surface of said third enclosure;
• and,
• ports connecting said third annulus to said first annulus, said ports extending through holes in said first and second enclosures, said ports being aerodynamically shaped so as to reduce losses within said second annulus, said ports having fins extending into said second annulus to transfer heat from air in said second annulus to said port, said port having fins extending inwardly into said port to transfer heat from said port to air in said port.