Agglomeration of aerosol using small equipment with two small aerial ultrasonic sources

Abstract

We have developed an ultrasonic agglomeration device that is considerably smaller than previous devices. We used a round-groove small aerial ultrasonic source, which is a compact, intense aerial source of ultrasonic waves. This ultrasonic source generates a large transverse vibration displacement using a circular vibrating plate with a round groove near the tip of the transmission rod, and it produces intense sound waves perpendicular to the vibration plane. In this paper, a compact agglomeration device containing two round-groove small aerial ultrasonic sources was developed, and the agglomeration efficiency was investigated by varying the volume of the device and the input power to the ultrasonic source. The results showed that although this device is small, it has a sufficient agglomeration effect.