PROBLEM TO BE SOLVED: To provide an oxygen concentrator controlling an adsorption/desorption sequence by detecting deterioration of each adsorption bed with age and controlling it in an optimal operation state.SOLUTION: A pressure swing adsorption type oxygen concentrator is provided with the plurality of adsorption beds filled with adsorbent capable of selectively adsorbing nitrogen more than oxygen, an air feed means feeding air to the adsorption beds, and a channel changeover means for repeating an adsorption process for feeding the air from the air feed means to the adsorption beds and extracting enriched oxygen, and a desorption process for decomposing the adsorption beds and recovering the adsorbent, at a specific timing and is further provided with a pressure sensor for measuring a peak pressure and/or a bottom pressure of each adsorption bed caused by the changeover of the channel changeover means.COPYRIGHT: (C)2008,JPO&INPIT【課題】各吸着床の経時的劣化を検知することで吸脱着シーケンスを制御し、最適の運転状態に制御する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複数の吸着床と、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、該流路切替手段の切替えに伴う各吸着床のピーク圧及び/又はボトム圧を測定する圧力センサを備える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2
