Weight-optimized portable oxygen concentrator

Gas separation: apparatus – Solid sorbent apparatus – Plural solid sorbent beds

Reexamination Certificate

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C128S205120

Reexamination Certificate

active

10851858

ABSTRACT:
System for producing an oxygen-rich gas comprising (a) a primary gas mover including a first and a second compressor, wherein the primary gas mover is characterized by a weight Wp; (b) a drive motor adapted to drive the first and second compressors; (c) a rechargeable power supply characterized by a weight, Wb; and (d) a pressure/vacuum swing adsorption unit adapted to separate the pressurized feed air into an oxygen-rich product at a product flow rate Fpand an oxygen-depleted waste gas, wherein the adsorption unit comprises a plurality of adsorber beds containing an adsorbent and characterized by a total adsorbent weight Wa; and wherein the combined weight, Wt, of the adsorbent, the primary gas mover, and the rechargeable power supply is characterized by the expressionin-line-formulae description="In-line Formulae" end="lead"?0.75 Fp<Wt<2.02 Fpin-line-formulae description="In-line Formulae" end="tail"?where Fpis in liters per min (at 23° C. and 1 atma pressure), and Wa, Wp, and Wbare in pounds.

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