| 摘要 |
PURPOSE: A continuous oxygen concentrator of three tower-two compressor type is provided, which can achieve an excellent performance that equivalent to the two streams of two tower-one compressor, so that this system can be substituted for the two stream system of two tower-one compressor thus saving one adsorbing tower. This system can shorten the producing period and increase hourly productivity. CONSTITUTION: The system comprises two compressors of No.1 and No.2(100,110), an air flow control valve(300), three adsorbers(200,210,220), an equalizing valve(400), a storage tank(500), a pressure controller(510) and a flow meter(520). Air compressed by compressors(100,110) is fed sequentially to one of three adsorbers(200,210,220) to have oxygen concentrated, the flow being controlled by air flow control valve(300) that controls air to flow sequentially to adsorbers. The oxygen-rich stream is fed to storage tank(500) after equalized by the equalizing valve(400), the adsorbers being sequentially back washed by concentrated oxygen.
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