Diseño e implementación de un prototipo de limpieza por medio de ultrasonido

Abstract

This modern cleaning system has been directed to hospital-medical instrument washing by ultrasound, is an effect created by the action of high frequency acoustic waves, the ultrasound travels through a medium. These waves react at a certain frequency causing cavitation, this is the explosion of millions of micro bubbles, releasing dirt from the elements exposed to the washing system, resulting in a quality cleaning.

A basic equipment required for ultrasonic cleaning includes transducers, tank, ultrasonic generator, but depending on your application you can add more systems like heating and electronic control.

This prototype implemented for the washing of hospital medical utensils is based on generating ultrasonic signals at 40 KHz for piezoelectric transducers located in the lower part of a vessel, which will house water inside where cavitation occurs, too the installation of silicone resistors attached to the container to bring water to 35 ° C, thus achieving a better washing.

The implementation consists of data acquisition card, where the functions of the washing system were programmed, such as the PID, to control the temperature, a keyboard to choose times according to operating parameters and an LCD to visualize the operating events. In addition, frequency generating power boards were designed for the transducers and an interface circuit for the control of the adhesive resistors.

This prototype is of low cost compared to an imported equipment, this work intends analyze its development and application in public hospitals that do not yet have this type of washing machines, the design complies with the hospital cleaning process, adjusting to their areas in which they was tackling problem, its limitations, objectives, importance and scope.