Ultrasonic transducers for excitation of fluctuations in gas ducts.

The article is devoted to the development of two types of radiators for influencing gaseous media and systems for cleaning industrial emissions installed directly in gas ducts. A feature of the ring radiator is the high uniformity of vibrations of the radiating surface, which ensures a high level of sound pressure within the central channel of the radiator. This allows it to be used as an acoustic barrier providing highly efficient coagulation of particles passing through it. A feature of the second type of emitters (tubular emitter) is the possibility of creating a sufficiently extended bending-oscillating section of the gas duct, which can also be used as a device for pre-treatment of the flow to combine the particles contained in it. [ABSTRACT FROM AUTHOR]