The control box of the ultrasonic cleaning generator can improve the reliability and stability of the circuit of the Ultrasonic cleaning, and achieve the effects of simple circuit, low cost, small size, and convenient installation. The piezoelectric transducer used for ultrasonic cleaning must work in the resonance state to achieve maximum efficiency. The current common parallel resonance design, while ensuring the resonance frequency, reduces the output power, and cannot achieve maximum efficiency, Although the commonly used full bridge inverter structure has high output power, it has poor stability and is prone to imbalance between bridges.

1. A series matching inductance circuit was developed and matched with the transducer using a series matching method, achieving stable operation of the transducer at the resonant frequency.

2. Through theoretical analysis, it is determined that a half bridge inverter topology structure should be used in the main power circuit. Relevant circuits have been developed, including rectification and filtering circuits, power matching circuits, and signal driving circuits, which ensure that the power output meets the cleaning requirements.

3. Designed circuits and devices for heat dissipation, delay protection, overcurrent protection, buffering protection, and overheating protection,

The ultrasonic cleaning generator control box has achieved long-term stable operation of the generator. After producing a circuit PCB and assembling a prototype, the specifications of the tested prototype are as follows: input 220V 50Hz, output 578 ± 20V 22kHz, maximum instantaneous power 4.16 ± 0.1kw, and the prototype can work continuously for more than 5000 hours after testing. After practical use, the workpiece can achieve good cleaning effect.

20KHZ 1500W Industrial Ultrasonic Frequency Generator For Ultrasonic Cleaning Equipment