Operating system for dual-sieve oxygen concentrators
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United States of America Patent
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Aug 23, 1994
Grant Date -
N/A
app pub date -
May 17, 1993
filing date -
May 17, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An operating system for dual-sieve oxygen concentrators, as used by invalids, provides a method and apparatus for controlling the purging and release of product gas and the cycling period in response to the pressure build-up in each sieve column. The cycling period is thereby self-adjusting to changes in the capacity of the columns. Restricting flow of product gas and purge gas to the higher-pressure part of the adsorption period provides product gas of higher purity and reduces the loss of oxygen in the purge.
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