RESEARCH ON HOUSEHOLD ULTRASONIC WASHING MACHINE AND ULTRASONIC TRANSDUCER BASED ON SPHERICAL RADIATION

On the basis of analysis by analytic theory and finite element method, the manufacturing and test are both done about the plane and spherical surface transducer. We can find, on the same radiation diameter, the later can be applied more electric power and have wider radiation range, more beautiful shape than the former. The washing machine using the spherical radiation transducer has the advantages of bigger power, more efficiency, better effect etc. By cooperating with third -party authority, the abilities of sterilization and pesticide residue removal are both tested by using the washing machine based on the spherical radiation transducer. The laws have been grasped about the effects of sterilization and pesticide residue removal changing with temperature, power, the volume of the container. The best working points have been obtained about the sterilization and pesticide residue removal on the specified conditions. We can conclude that the washing machine based on the spherical radiation transducer does not only have the good washing ability, but also have good effect of sterilization and pesticide residue removal.