PROBLEM TO BE SOLVED: To provide a device which compensates for an oxygen concentration decrease involved with a time-dependent change in the concentration of generated oxygen and a time-dependent deterioration of a device and keeps the oxygen concentration constant for downtime deterioration of an oxygen enricher.SOLUTION: The pressure variation adsorption-type oxygen enricher has at least one adsorption bed filled with an adsorbing agent capable of selectively adsorbing nitrogen rather than oxygen, and an air supplying means to supply air to the adsorption bed, a channel switching means to repeat an adsorption process to supply air from the air supplying means to the adsorption bed and extract enriched oxygen, and a desorption process to decompress the adsorption bed and regenerate the adsorbing agent with a fixed timing. The oxygen enricher is equipped with an operating time measuring means 402 and a control means 401 to control the supply amount of air of the air supply means and/or switching time of the channel switching means on the basis of operating time information of the operating time measuring means.COPYRIGHT: (C)2008,JPO&INPIT【課題】酸素濃縮装置の休止劣化に対し、生成する酸素濃度の経時的変化、装置の経時劣化に伴う酸素濃度低下を補償し、酸素濃度を一定に保持する装置を提供する。【解決手段】酸素よりも窒素を選択的に吸着し得る吸着剤を充填した少なくとも1個の吸着床と、該吸着床へ空気を供給する空気供給手段、該空気供給手段からの空気を該吸着床へ供給し濃縮酸素を取り出す吸着工程、該吸着床を減圧し吸着剤を再生する脱着工程を一定タイミングで繰り返すための流路切替手段を具備した圧力変動吸着型酸素濃縮装置において、該装置の運転時間計測手段402を備え、該運転時間計測手段の運転時間情報に基づいて、該空気供給手段の空気供給量及び/または該流路切替手段の切り替え時間を制御する制御手段401を備えたことを特徴とする圧力変動吸着型酸素濃縮装置。【選択図】図1
