abstract |
(57) Abstract: Provided is an oxygen concentrator having an induction motor control function for a compressor that can stably supply oxygen-concentrated air having a predetermined concentration even when oxygen concentration fluctuations occur. SOLUTION: In an oxygen concentrating apparatus provided with an adsorption column filled with an adsorbent for selectively adsorbing nitrogen rather than oxygen and an electric motor-driven air compression means for supplying air to the adsorption column, oxygen-enriched air A medical oxygen concentrator comprising: oxygen concentration detection means for detecting the oxygen concentration of the air; and control means for controlling the number of revolutions of the electric motor of the air compression means based on the detection result. |