Method of producing oxygen rich gas utilizing an oxygen concentrator having good start-up characteristics
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United States of America Patent
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May 25, 1982
Grant Date -
N/A
app pub date -
May 9, 1980
filing date -
May 11, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of producing oxygen rich gas utilizing an oxygen concentrator having a plurality of parallel-connected moisture/nitrogen removing units alternately operated to produce an oxygen-rich gas and connected through respective flow regulating valves to a common buffer tank for storing the gas thus produced. The flow regulating valves are operated so that, throughout substantially the second half of the operation cycle of each moisture/nitrogen removing unit, a portion of the gas having been processed by that unit is supplied to the other moisutre/nitrogen removing unit to restore its ability to remove the moisture and nitrogen and further so that, when the concentrator is to be stopped, a portion of the oxygen-rich gas stored in the buffer tank is caused to flow back into the one of the units having just finished a complete operation cycle to restore its ability to remove the moisture and nitrogen, thus providing immediate start-up of the units as well as immediate supply of oxygen-rich gas upon restarting the concentrator.
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