Ultrasonic transducer system

摘要

The method is for treating a liquid or slurry with an ultrasonic energy. A movable endless member (102) is provided that is permeable to a liquid (156). A transverse foil (106) is disposed below the member and extends across the member (102) and a transducer (108) is in operative engagement with the foil (106). The member (102) is moved about rollers (104). The transducer (108) generates pressure pulses into the foil (106) to form implosion bubbles (158) in the liquid (156) disposed above the member (102). The implosion bubbles (158) has a first diameter d1. A gap (155) is formed between the member (102) and the foil (106). The gap (155) represents a distance d2 that is less than the diameter d1 of the bubbles (158) to prevent any bubbles of critical size (158) to be captured in the gap (155).