PROBLEM TO BE SOLVED: To provide an oxygen concentrator precisely recognizing the operation condition of the oxygen concentrator and accurately recognizing the cause of equipment abnormality.SOLUTION: The oxygen concentrator comprises a sensor for detecting the operation state of the oxygen concentrator, a memory for recording the detection information of the sensor, and an operation element for comparing the detection information with a preset setting value. The memory is a nonvolatile memory provided with a primary storage region for recording the detection information at all times, a detection information normal operation recording region, an abnormal operation recording region, and the recording region of an alarm history flag. When a compared result is off a preset value, the operation element is provided with a function of recording the recording information of the time going back by prescribed time from the abnormal detection time among the recording information recorded in the primary storage region in the abnormal operation recording region as the continuous operation information of a fixed period immediately before abnormality detection and intermittent operation information for each fixed time.COPYRIGHT: (C)2008,JPO&INPIT【課題】装置の運転状況を的確に把握し、機器異常の原因を正確に把握することができる酸素濃縮装置を提供する。【解決手段】酸素濃縮装置の運転状態を検知するセンサ、該センサの検知情報を記録するメモリ、検知情報が予め設定された設定値と比較する演算素子を備え、該メモリが、検知情報を常時記録する一次記憶領域と、検知情報の正常運転記録領域、異常運転記録領域、および警報履歴フラグの記録領域を有する不揮発性メモリであり、比較結果が予め設定された設定値から外れた場合、該演算素子が、該一次記憶領域に記録された記録情報のうち異常検知時刻から所定時間遡った時間の記録情報を、異常検知直前の一定期間の連続運転情報および一定時間毎の間歇運転情報として異常運転記録領域に記録すること機能を備えたことを特徴とする酸素濃縮装置。【選択図】なし
