PROBLEM TO BE SOLVED: To provide a pressure-swing adsorption type oxygen concentrator which solves issues of enlargement of facilities, cost increase, and power consumption up by setting the initial oxygen concentration in the oxygen concentrator relatively high.SOLUTION: The pressure-swing adsorption type oxygen concentrator is equipped with at least one adsorption bed filled with an adsorbent which selectively adsorbs nitrogen than oxygen, an air supply means to supply air to the adsorption bed, an absorption process to supply the air from the air supply means to the adsorption bed and take out concentrated oxygen, and a passage switch means to repeat a desorption process to decompress the adsorption bed and regenerate the adsorbent at predetermined timing, and is further equipped with an accumulation time counter to count accumulated operation time of the concentrator and a control means to control air supply by an air supply means based on the accumulated operation time by the accumulation time counter.COPYRIGHT: (C)2008,JPO&INPIT【課題】酸素濃縮装置の初期酸素濃度値を高めに設定することによる、装置大型化、コスト、消費電力アップの問題を解消した酸素濃縮装置を提供する。【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、装置の積算運転時間を計測する積算時間計を備え、該積算時間計の積算運転時間に基づいて、該空気供給手段の空気供給量を制御する制御手段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3
