An ultrasonic cleaner is a sound wave with a frequency higher than 20,000 Hertz, which is completely inaudible to the human ear. Ultrasonic waves propagate in the liquid, causing the liquid to vibrate together with the cleaning tank at ultrasonic frequencies. When the liquid and the cleaning tank vibrate, they have their own natural frequencies. This vibration frequency is sound frequency, so people can hear a buzzing sound and it won't harm the human body.

        When ultrasonic cleaners diffuse in living organisms, they cause changes in the functions and structures of the organisms through the interaction between tissues, which is known as the biological effect of ultrasonic waves. The mechanisms of biological effects are thermal effects and cavitation effects.

        The so-called thermal effect refers to the conversion of part of the energy absorbed by biological tissues during the propagation of ultrasonic waves into thermal energy, which increases the temperature of the tissues. Cavitation effect refers to the interaction between the ultrasonic wave propagation process and the gas nuclei or microbubbles in the tissue, which causes sudden explosions, generates huge instantaneous pressure, and alters the internal structure of the tissue.

        Ultrasonic cleaning agent dosage: Ultrasonic is a potential carcinogenic and teratogenic factor. Different sound frequencies and intensifiers are harmful to different people. Due to the strong penetrating power of ultrasonic waves on solids and liquids, when the energy is large, it can cause particles to vibrate at high frequencies, and part of the energy can be converted into heat energy, thereby increasing the local temperature.

        When high-intensity pulsed ultrasonic waves propagate in liquids containing micrometer-sized bubbles, they can cause the bubbles to contract, expand and explode violently. This phenomenon is called "cavitation". Not long ago, the renowned American super physics expert Castanson pointed out that the maximum output intensity of some ultrasound image diagnostic instruments used in clinical practice has reached 1000. For organisms, cells near explosive bubbles are damaged during transient space-time. Generally speaking, damage to a small number of cells in most organs and organisms does not cause harm to the human body.

        The working principle of an ultrasonic cleaning machine is to use ultrasonic waves to change the molecular movement on the surface of the workpiece, and ultrasonic waves are used to heat the molecular movement. Under the action of pressure, thermoplastic materials melt instantly. Imagine that the leaked ultrasonic waves would also act on the workers' skin, thereby altering the body's thermal balance and affecting the new and old.

        Metabolism affects blood circulation. Of course, there are national standards. If the standards are met, the impact of ultrasonic waves on the human body is not significant and can be ignored. However, the manufacturers of ultrasonic cleaning machines strongly advise pregnant women to stay away from them!

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