Oxygen generator capable of automatically adjusting oxygen concentration and oxygen flow and control method

Abstract

According to the embodiment of the invention, the oxygen generator capable of automatically adjusting the oxygen concentration and the oxygen flow and the control method are provided, and the oxygen generator comprises an air compression pump; a molecular sieve adsorption system; an electronic switching valve; a balance valve; the flow adjusting device is used for adjusting the oxygen flow output by the oxygen generator; and a controller that calculates a pump pressure of the air compression pump required to achieve the set oxygen flow rate and oxygen concentration under a steady state condition; feed-forward voltage of the air compression pump is determined according to the pump pressure; according to the difference between the actual oxygen concentration output by the oxygen generator and the set oxygen concentration, the oxygen concentration deviation is calculated, and an adjusting voltage signal is obtained; and the feed-forward voltage is adjusted according to the adjusting voltage signal to obtain the total voltage for driving the air compression pump. According to the oxygen generator and the control method, the oxygen concentration can be automatically adjusted in a relatively wide oxygen concentration and oxygen flow range, and the oxygen generator and the control method are suitable for a relatively wide clinical application scene.

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