This device is equipped with an electric motor along with a compressor mechanism which will suck atmospheric air and perform compression by the means of volume. They are used to separate nitrogen and oxygen from the atmospheric air by allowing large molecules which are larger in size then the pores. They are materials with pores of precise and uniform size and structure which can be utilized as adsorbent. 12 V DC SPST/SPDT Relay is used here to switch the solenoid valves on and off with the use of electrical pulse. While its contacts can handle a high current flow with total electrical isolation from delicate low power electronic circuit. It is controlled/triggered by a low DC voltage. Relay is an electromagnetic switching device which provides complete electrical isolation between controlling circuit and the output circuit. This AC current is converted into DC with the help of full bridge diode rectifier which further is filtered using capacitor and with the use of IC 7812 the voltage is regulated to 12 V DC. The step-down transformer reduces the input AC 230 V to AC 15 V. It consists a step down 15 V 2A transformer where the primary voltage is 230 V AC and secondary voltage is 15 V AC, A full bridge diode rectifier made of 4 * 1N4007 diodes, two capacitors of value 1000 uF 25 V and 1 uF, a 12 V voltage regulator (7812) IC, 4.7 KΩ resistor, 1 LED as indicator. This power supply is used to provide power to Arduino UNO, and control relay. This will switch control relays on and off as per the programmed values. The Arduino is preprogrammed with delays. Arduino Uno:Īrduino Uno board is connected to control relays. Those are Arduino Uno, 12 V DC power supply circuit, Control Relay Circuit, Solenoid Valves, Air Compressor, Air Filtration Unit, Flow Control Valve, Membrane Housing as Canisters, PU Fittings, and Zeolite Sieves. This Oxygen Concentrator is an assembly made of few electronic, mechanical and chemical parts. With the help of easily available stuff one can make an oxygen concentrator with enough capacity which can support a covid or any other patient who is in need of oxygen supply. To get rid of this situation this project is going to be helpful to the society by providing complete details about how to make an oxygen concentrator at home.
Currently relatives have to suffer for cylinder arrangement instead of providing moral support to the patient. At this condition arranging oxygen cylinders for loved ones is a difficult task. With limited resources this fight against Covid 19 virus is an unexpected challenge for the whole world. In the world highly affected by pandemic there is a huge spike in covid infection cases.
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