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Method and apparatus for controlling the purity of oxygen produced by an oxygen concentrator

  • US 20060174872A1
  • Filed: 02/09/2005
  • Published: 08/10/2006
  • Est. Priority Date: 02/09/2005
  • Status: Active Grant
First Claim
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1. An oxygen concentrator comprising:

  • a plurality of adsorbent columns, each having an inlet, an outlet and a bed of adsorbent material;

    a vacuum pump for removing separated nitrogen rich gas from the column inlets;

    a control valve for controlling flow of fluids in and out of the columns; and

    a breakthrough sensor for signaling the position of a mass transfer zone (MTZ), the breakthrough sensor controlling operation of the control valve as a function of the breakthrough sensor signal.

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