The principle of cleaning ultrasonic application is that the high-frequency oscillation signal sent by the ultrasonic generator is converted into high-frequency mechanical oscillation by the transducer and propagated to the medium. The ultrasonic wave in the cleaning solvent radiates forward in the dense and dense phases of the cleaning liquid to make the liquid The flow produces tens of thousands of tiny bubbles. The tiny bubbles (cavitation nuclei) in the liquid vibrate under the action of the sound field. When the sound pressure reaches a certain value, the bubbles grow rapidly and then suddenly close. When the bubbles close Generate shock waves, generate thousands of atmospheric pressures around it, destroy insoluble dirt and disperse them in the cleaning fluid. When the group particles are wrapped in oil and adhere to the surface of the cleaning part, the oil is emulsified and the solid particles are separated. , So as to achieve the purpose of cleaning the surface of the cleaning part.

Although humans cannot hear ultrasound, many animals have this ability. They can use ultrasound to "navigate", hunt down food, or avoid dangerous objects. You may have seen many bats flying back and forth in the courtyard on summer nights. Why do they fly without light and not lose their way? The reason is that bats can emit ultrasonic waves of 20,000 to 100,000 Hz, which is like an active "radar station." Bats use this "sonar" to determine whether there is an insect or an obstacle in front of the flight. The mass of the radar is tens, hundreds, and thousands of kilograms, and the accuracy in some important performances. Anti-interference ability, etc., bats are far superior to modern radio locators. In-depth study of the functions and functions of various organs in animals Construction, the use of acquired knowledge to improve existing equipment, is a new discipline that has been developed in recent decades, called bionics.

We humans did not learn to use ultrasound until the First World War. This is to use the principle of "sonar" to detect targets and their states in the water, such as the position of submarines. At this time, people send a series of ultrasonic waves of different frequencies into the water, and then record and process the reflected echo. From the characteristics of the echo, we can estimate the distance, shape and dynamic changes of the detected object. The first medical use of ultrasound was in 1942, when the Austrian doctor Dusick used ultrasound technology to scan the brain structure for the first time; later in the 1960s, doctors began to apply ultrasound to the detection of abdominal organs. Nowadays, ultrasound scanning technology has become an indispensable tool for modern medical diagnosis.