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oxygen machine is a device providing oxygen therapy to a patient2012-08-08 06:17:01
oxygen machine is a device providing oxygen therapy to a patient at minimally to substantially higher concentrations than available in ambient air. They are used as a safer, less expensive, and more convenient alternative to tanks of compressed oxygen. Common models retail at around $800. Leasing arrangements may be available through various medical-supply companies and/or insurance agencies.Oxygen concentrators operate on the principle of pressure swing adsorption of atmospheric nitrogen onto zeolite materials. At high pressure, nitrogen sticks to the surface of the zeolite. Because the zeolite is extremely porous, it has a very large surface area and can absorb large volumes of gas. At low pressure the nitrogen is released.An oxygen concentrator has two cylinders filled with zeolite pellets. Air is compressed to a few times normal atmospheric pressure (typically 20 psi/138 kPa gauge, or 2.36 atmospheres absolute) and passed through the zeolite bed. The bed adsorbs the nitrogen, leaving nearly-pure oxygen (plus small amounts of argon, water vapor and other minor atmospheric components) in the output.