Diseño de un concentrador de oxígeno de 5 litros por minuto de capacidad, para el Laboratorio de Manufactura de la Carrera de Ingeniería Mecánica de la Universidad Técnica de Ambato

Abstract

In this work, the design and construction of an oxygen concentrator of 5 liters per minute was carried out, in order to propose an alternative to the oxygen tanks that obtained a high demand between the second semester of 2020 and the first semester of 2021 at national level. First, the processes involved in commercial oxygen concentrators were analyzed by means of technical data sheets, manuals, scientific articles, standards (ISO 80601-2-69), etc., and complemented with exploratory research in electro-medical equipment workshops to establish alternatives for components such as: compressor, control card, flowmeter, oxygen analyzer, etc., and to find a viable option by means of linear weighting (scoring), Taking as a model the four-stage Skarstrom cycle and 13 x zeolite as adsorbent, the pressurization, feed, exhaust and purge stages were replicated, using solenoid valves controlled by Arduino, a v-flow sensor controlled by a stepper motor to supply oxygen and a VN202-MkII oxygen analyzer to check the purity of oxygen at different flows. Data reflected on an LCD display. At the end of this process it was verified that the solenoid valves perfectly simulate the Skarstrom cycle to generate oxygen and analyzing their results, it was verified that the flow and the degree of oxygen concentration have an inversely proportional relationship, the lower the flow the purer the oxygen supplied.