Method of ultrasonic waves degassing and device using the same

摘要

In an apparatus for defoaming liquid with ultrasonic wave in order to eliminate foam or bubble from the liquid, provided with an ultrasonic wave liquid tank, a defoaming tank, and an ultrasonic oscillator for irradiating ultrasonic wave through the ultrasonic wave transmitting liquid to the defoaming tank; at least a part of the defoaming tank is immersed in the ultrasonic wave transmitting liquid in the ultrasonic wave liquid tank, and a degree of unsaturation of dissolved air in the ultrasonic wave transmitting liquid under defoaming operation is not lower than 10%.