Análisis de la tasa de fallos del control eléctrico de secadoras de ropa industrial en condiciones de operación variables

Abstract

This research is presented to investigate the most likely causes of failure in operating conditions, nominal and variable, to which the control cards of the speed queen industrial dryers, std32dg, are exposed. It proposes to improve and extend the service life of the fresh laundry located in Cuenca City. Economic factors of time and operation make the study of mainboard failure be mandatory. Presumably, the heat excessive humidity and the flow, has as effect that the boards get damaged easily, and it causes, waste of money and time. When any of the controller boards fails, the downtime of the dryer is typically indefinite. This study will allow to know the most probable causes of failure of the control boards of the drying machines through data taken by the sensors and to carry out an analysis by means of graphs to determine the possible failures. Using the dht 11 sensor, the humidity and temperature data of the control board will be gotten, with the current sensor sct-013-30a, the current data will be obtained on the control boards and with the micro sd module we backed up the information. Data was gotten at the input of the control board both on the card without failure vs the card with failure, the data obtained are temperature, humidity and flow, in the same way data was gotten at the output of the control card, it was obtained data of vacuum current and with different types of clothes (light, jean, towels), weight (5, 10, 20lbs). The comparisons of temperature, humidity, flow were made and it was determined that there was no anomaly in the control card, because the peaks that were presented were at the start of the machine and was within the established parameters. It is recommended to the owner of the laundry the placement of a capacitor bank due to the penalty because of the existing power factor.