How does the ultrasonic bottle washer work?

Ultrasonic bottle washer is a high-frequency oscillating signal emitted by the ultrasonic generator, which is converted into a high-frequency mechanical oscillation by a transducer and propagated to the medium--cleaning solvent. The ultrasonic wave is radiated in the cleaning liquid in a dense phase to make the liquid It flows and produces tens of thousands of tiny bubbles. These bubbles form and grow in the negative pressure region in which the ultrasonic waves propagate longitudinally, and rapidly close in the positive pressure region. In this process known as the "cavitation" effect, the bubble closure can form an instantaneous high pressure of more than 1000 atmospheres, and the continuous generation of instantaneous high pressure is like a series of small "explosions" constantly impacting the surface of the object, so that the object The dirt in the surface and the gap is rapidly peeled off, thereby achieving the purpose of purifying the surface of the object.
In the middle is a layer of stainless steel plate with a certain thickness. The transducer head is smeared under this layer of steel plate, and an alternating current signal of a certain frequency and voltage is generated by the ultrasonic generating source to drive the transducing head and the stainless steel plate together to perform high-frequency vibration. When the steel plate vibrates upwards, the water is pushed upwards. When the steel plate vibrates downward, the water can't keep up with the vibration speed of the steel plate, and a gap will be formed between the water and the steel plate, so that many bubbles are formed after repeated vibrations, such as The figure shows: This bubble is caused by the "cavitation effect", which we call cavitation bubble. The cavitation bubble propagates in the direction of the vibration. If there is just a workpiece in the water, the cavitation bubble hits the surface of the workpiece to generate an impact force of several thousand atmospheres, which causes the dirt on the surface of the workpiece to fall off.
The mechanism of ultrasonic cleaning mainly has the following aspects:
1. A strong shock wave is generated when the cavitation bubble is broken, and a part of the dirt layer is peeled off by the shock wave, dispersed, emulsified, and peeled off.
2. Because of the bubbles generated by the cavitation phenomenon, the gap between the dirt layer formed by the impact and the surface layer and the gap penetrates. Because of the simultaneous expansion and contraction of the small bubble and the sound pressure, the physical force like peeling repeatedly acts on the dirt layer. The layer of dirt is peeled off and the bubbles continue to penetrate inward until the layer of dirt is completely stripped. This is the secondary effect of cavitation.
3. The impact of the ultrasonic vibration of the cleaning solution on the dirt during ultrasonic cleaning.
4. Ultrasonic accelerated chemical cleaning agent to dissolve the dirt, chemical and physical forces combined to accelerate the cleaning process.

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