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      Anyone who has used ultrasonic cleaning equipment knows that the ultrasonic cleaner will make an uncomfortable sound when it works. This kind of sound is produced by the high-frequency operation of ultrasonic cleaning, so people will have doubts in their hearts , Does such an ultrasonic device emit radiation? In fact, this is nothing to worry about. Although most electronic devices have more or less radiation, and ultrasonic cleaners also have it, the harm to the human body is minimal. After all, ultrasonic waves are different from microwaves in microwave ovens. Ultrasonic transmission requires a medium, which is generally water, so we usually add water to the tank of the ultrasonic cleaner.

     Ultrasonic cleaning machine is operated by the action of ultrasonic high-frequency oscillation on water molecules, and the energy is also absorbed by water, so it will not cause any damage to people. The reason why the sound is made is that the sound is not an ultrasonic wave, and humans cannot hear the ultrasonic wave. This also needs to be explained by the principle of the ultrasonic cleaning machine: when the ultrasonic wave acts on the liquid, tens of thousands of bubbles will be generated in the liquid, which will burst all the time, resulting in a shock wave with great energy, which is equivalent to generating a high temperature of hundreds of degrees in an instant. And up to thousands of atmospheres, this phenomenon is called "cavitation", ultrasonic cleaning uses the shock wave generated by the explosion of bubbles in the liquid to scour and clean the inside or outside of the workpiece gap. Ultrasonic waves will propagate in the liquid, causing the liquid and the tank to oscillate together at the ultrasonic frequency. The liquid and the cleaning tank have their own natural frequencies when they vibrate, so when people use ultrasonic machines, they will hear " tsk tsk" sound. At the beginning, you may not be used to it, and you may not feel very at ease, but this is a psychological effect, and it is actually not harmful to the human body.

     The attenuation rate of ultrasonic waves in the air is the largest, so ultrasonic waves will not have much impact on the human body.

     If you have to say that the industrial ultrasonic cleaning machine is harmful to the human body, it is the contact problem with the human body. During the working time of the cleaning machine, if you directly touch the water in the working ultrasonic tank without gloves, you will feel subtle changes and feel uncomfortable. Users should try to avoid putting their hands directly in the working sink. If you must touch, you should wear gloves for safety. If you are still not at ease, it is recommended not to stay next to the machine for a long time when the ultrasonic cleaner is working, and to minimize contact with cleaning agents.