A new type of compound ultrasonic horns used in sonochemistry

A new type of compound ultrasonic horns,which has one wavelength length,is put forward.This type of compound horns consists of five elements,including three constant cross-sectional cylinders and two varied cross-sectional cylinders.The design method of this type of compound horns is given,and two compound ultrasonic horns are calculated.The results show that this type of compound horns has the advantage over the common half wavelength compound horns in amplifying amplitude without reducing the output surface of horn,and even amplifying amplitude and the output surface together.This advantage is vital to the improvement of the radiation power and the transfer efficiency of the acoustic energy of the ultrasonic system.This type of compound horns is especially fit for ultrasonic liquid processing such as sonochemistry.