Patent ID: 7066985
Filing Date: 2006-06-27
Classification: A61M,B01D

Abstract:
1. A portable gas fractionalization apparatus, comprising: a PSA unit comprising plural adsorbent beds which produce oxygen having a purity of at least 87%, said unit including valves operating in accordance with a PSA cycle that includes a pressure equalization step so as to provide greater than about 31% recovery of oxygen from air; a compressor connected to supply compressed air to said PSA unit, said compressor being non-reciprocating to reduce compressor noise, wherein the compressor is configured to draw ambient air at a flow rate of no more than about 15 slpm; a blower which produces an air stream across said compressor, wherein said valves of said PSA unit are disposed upstream of said air stream across said compressor such that thermal load on said PSA valves is reduced.