Oxygen concentrator
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United States of America Patent
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-
Dec 31, 1985
Issued Date -
N/A
app pub date -
Jul 26, 1984
filing date -
Jul 9, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An oxygen concentrator having molecular sieve beds for selectively adsorbing nitrogen from atmospheric air for increasing the oxygen concentration of a product gas, a reservoir for receiving the product gas, a compressor for charging atmospheric air to the sieve beds and a valve and valve switching means for directing atmospheric air from the compressor to alternate sieve beds includes means for sensing the withdrawal rate of product gas from the reservoir and a microprocessor provided with the minimum time required for charging the respective sieve beds to achieve a product gas having a selected oxygen concentration at the sensed rate of withdrawal and means for switching the valve to charge the beds for the minimum charge time.
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