China chemical machinery and equipment net finishing: ultrasonic cleaning machine is mainly there are two parts to form the ultrasonic generator and ultrasonic transducer, ultrasonic transducer is the core part of the ultrasonic cleaning machine. Ultrasonic transducer to the power source of ultrasonic frequency acoustic energy is converted into mechanical vibrations through the cleaning liquid in the trough of radiation to the ultrasonic cleaning tank wall.
Acoustic role of keeping the vibration can make the micro-bubble in the liquid in the tank due to the ultrasonic radiation. Sound pressure or sound intensity by the pressure reaches a certain level when the bubble will be the rapid expansion, and then suddenly closed.
During this process, the tremendous pressure to produce a shock wave generated by the moment of the closure of the bubbles can damage the the insoluble soil leaving their differentiation in the solution, the repeated impact of the steam-type cavitation on the dirt directly achieve the cleaning effect.
Research and application of ultrasonic cleaning technology, China began in the 1950s and almost synchronized abroad. The relatively slow development of the 20th century, 80 years ago, after 80 years, especially since the reform and opening up, the new technology has been developed rapidly. Has been widely used in electronic appliances industry, optics industry, clocks and jewelry industry, chemical and textile industries, automobile and motorcycle industry, industrial machinery, fabricated metal products industry, atomic energy and aerospace industry, shipbuilding industry, the pharmaceutical industry and medical equipment cleaning. Single-cylinder standard models of ultrasonic cleaning equipment have been multi-cylinder, complete, exclusive and semi-automated and automated ultrasonic cleaning equipment development.
Operating frequency to adapt to different cleaning objects, in addition to the existing low-frequency (40KHz) Ultrasonic cleaning, but also the development of high-frequency ultrasonic cleaning equipment ultrasonic cleaning work at the same time and multi-frequency (60 ~ 200KHz). Ultrasonic frequency power (also known as the ultrasonic generator) is commonly used in the 1980s, international self-oscillating class D transistor switching power amplifier, the circuit is relatively simple, with the frequency tracking function synthesis through multiple, easy to get high-power ultrasonic occurred , but had to use in the domestic, very heavy with a large core transformer buck.
The 21st century, the gradual introduction of the excited switching power supply, pulse width modulation, the output power is adjustable. As a result of the high-voltage, high-current the IGBT devices or MOS module, high-power ultrasonic frequency power smaller, further improve the reliability, control circuit using digital technology can get superior performance, more reliable operation, remote ultrasonic frequency power.
