| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pressure depending adsorption oxygen-concentrating device which is approximately equivalent to the conventional device regardless of the frequencies of commercial power sources, and increase the efficiency of oxygen concentration by optimizing the operating conditions, and save the electricity consumption. SOLUTION: This pressure depending adsorption oxygen concentrating device for medical treatment is equipped with a plurality of adsorption beds, an air-feeding means, an oxygen-feeding means, and a rotary valve. In the plurality of adsorption beds, an adsorbent which adsorbs nitrogen with priority over oxygen is filled. The air-feeding means feeds a material air to the adsorption beds. The oxygen-feeding means feeds an oxygen-concentrated air generated from the adsorption beds to a user. The rotary valve periodically switches the cycle of the adsorption and the desorption-reproduction of the material air in the adsorption beds. Such a pressure depending adsorption oxygen concentrating device is also equipped with a flow rate- setting means which sets the flow rate of the oxygen-concentrated air which is fed to the user, and a control means. The control means simultaneously controls the amount of the material air to be fed to the adsorption beds, and the switching period of time for the switching valve, based on the set value by the flow rate setting means.</p> |
