超声波清洗机原理主要是将换能器，将功率超声频源的声能，并且要转换成机械振动，通过清洗槽壁使之将槽子中的清洗液辐射到超声波。由于受到辐射的超声波，使之槽内液体中的微气泡能够在声波的作用下从而保持振动。

The principle of ultrasonic cleaning machine is to convert the ultrasonic energy of transducer and power ultrasonic frequency source into mechanical vibration, and make the cleaning solution in the tank radiate to ultrasonic through cleaning the tank wall. Because of the ultrasonic radiation, the microbubbles in the liquid in the tank can keep vibration under the action of acoustic wave.

当声压或者声强受到压力到达一定程度时候，气泡就会迅速膨胀，然后又突然闭合。在这段过程中，气泡闭合的瞬间产生冲击波，使气泡周围产生1012-1013pa的压力及局调温，这种超声波空化所产生的巨大压力能破坏不溶性污物而使他们分化于溶液中，蒸汽型空化对污垢的直接反复冲击。

When the sound pressure or sound intensity reaches a certain level, the bubble will expand rapidly and then close suddenly. In this process, shock wave is generated at the moment of bubble closure, which makes 1012-1013 PA pressure and local temperature around the bubble. The huge pressure generated by ultrasonic cavitation can destroy insoluble pollutants and make them differentiate into solution. The direct counter impact of steam cavitation on the fouling.

超声波是一种振动频率高于声波的机械波，由换能晶片在电压的激励下发生振动产生的，它具有频率高、波长短、绕射现象小，特别是方向性好、能够成为射线而定向传播等特点。

Ultrasonic wave is a kind of mechanical wave whose vibration frequency is higher than that of sound wave. It is generated by the vibration of transducer chip under the excitation of voltage. It has the characteristics of high frequency, short wavelength, small diffraction phenomenon, especially good directivity, and can become a ray and propagate directionally.

超声波对液体、固体的穿透本领很大，尤其是在阳光不透明的固体中，它可穿透几十米的深度。超声波碰到杂质或分界面会产生显著反射形成反射成回波，碰到活动物体能产生多普勒效应。因此超声波检测广泛应用在工业、国防、生物医学等方面。

Ultrasonic has great penetration ability to liquid and solid, especially in the opaque solid of sunlight, it can penetrate tens of meters deep. When the ultrasonic wave touches the impurity or interface, it will produce significant reflection and echo. When it touches the moving object, it will produce Doppler effect. Therefore, ultrasonic testing is widely used in industry, national defense, biomedicine and other aspects.