To provide an oxygen concentrating apparatus capable of reliably supplying oxygen to a user who has different breathing patterns from a normal user while suppressing oxygen supply amount.SOLUTION: The oxygen concentrating apparatus of the present invention comprises an intake air state detecting means, a period definition means, a supply condition adjusting means and a supply control means. The intake state detecting means detects the intake state of the user. The period defining means defines a first half period t 1 in which the oxygen inhalation effectiveness is relatively high and a second half period t 2 in which the oxygen inhalation effectiveness is relatively low. The supply condition adjusting means adjusts the supply condition of oxygen based on the intake state detected by the intake state detecting means and the first half period t 1 defined by the period definition means. Based on the supply condition, the supply control means performs control to supply oxygen in a plurality of times in a pulse manner during the first half period t 1.(FIG.【課題】酸素供給量を抑えつつ、正常な使用者とは呼吸パターンが異なる使用者に対しても確実に酸素を供給することが可能な酸素濃縮装置を提供すること。【解決手段】本発明の酸素濃縮装置は、吸気状態検知手段、期間定義手段、供給条件調整手段及び供給制御手段を備える。吸気状態検知手段は使用者の吸気状態を検知する。期間定義手段は、酸素吸入の有効度が相対的に高い前半期間t1と、酸素吸入の有効度が相対的に低い後半期間t2とを定義する。供給条件調整手段は、吸気状態検知手段によって検知された吸気状態と、期間定義手段によって定義付けられた前半期間t1とに基づいて、酸素の供給条件を調整する。供給制御手段は、供給条件に基づいて、前半期間t1中において酸素を複数回に分けてパルス方式で供給する制御を行う。【選択図】図5
