Design and characterization of automatic hand washing and drying machine

Abstract

The unhealthy pattern of washing and drying of hands in various restaurants and places of food selling has prompted the need for this project. We have taken the standard mechanical Hand washing and drying machine and made it a technological engineering wonder of touch-less Hand washing And Drying. The machine comprises a housing having a top portion and a bottom portion. The top portion is quasi-rectangular shaped structure comprising a fluid injection system for injecting water and liquid soap to users’ hands. The bottom portion comprises a box shaped structure wherein by the side is the heating chamber for drying the hands. The machine further comprises a wash basin coupled in the interior  of  said   box  shaped   structure with circular opening under where the used water or liquid soap pass through, an electronic eye for detecting the insertion of hands in said wash basin and a control unit for timing the activation of said water injection. Also in the heating chamber comprising an air injection system for injecting air through said heating chamber, a thermostat to control the temperature and a sensor that activate the drying process whenever the hands cast dark shadow across it. This research work has successfully presented a functional and highly efficient low cost sensor controlled hand washing and drying machine which is usable in different places within our geographical environment.