Education of the republic of uzbekistan tashkent state technical university named after islam karimov

 
INTRODUCTION 
Ultrasonic (US) equipment is widely used to intensify various physicochemical processes 
in solid, liquid, and gaseous media [1]. 
At present, thanks to the creation and application of ultrasonic emitters of a new type [2], 
the technology of intensification of processes occurring in gaseous media is experiencing a 
rebirth. Of the greatest interest among such technologies is the coagulation of natural and 
technogenic airborne dispersions [3], which is due to the need to ensure continuous operation of 
airport runways, highways and ports in fog conditions; exclusion of the spread of airborne toxic 
substances in disasters and terrorist acts; preventing the formation of hazardous concentrations of 
explosive dusts in coal mines, chemical and flour mills. 
The ultrasonic equipment (ultrasonic apparatus) used to intensify processes in gaseous 
media consists of two main elements that complement each other. 
The main element of the equipment is an ultrasonic vibrating system consisting of a 
piezoelectric transducer that converts the energy of electrical vibrations coming from an 
electronic generator, a wave-water amplifying structure and a transmitter that introduces 
ultrasonic vibrations into a gas medium exposed to ultrasound. 
An electronic generator is used to power the ultrasonic oscillatory system [4], which 
converts the energy of an electrical household or industrial network into the energy of electrical 
oscillations of ultrasonic frequency (more than 20 kHz), which are sinusoidal oscillations with an 
amplitude of several hundred volts. 
 
MATERIALS AND METHODS 
An electronic generator, an ultrasonic vibrating system and a process medium subjected to 
ultrasonic treatment are elements of a single system, coordinated with each other and indirectly 
or directly affecting each other. Violation of the conditions for optimal matching of any of the 
elements of this circuit can lead to a deterioration in the process of energy transfer in the system 
"generator - emitter - processed medium" and a decrease in the effectiveness of ultrasonic 
exposure. In this regard, when designing ultrasonic equipment, it becomes necessary to ensure 
optimal matching of the parameters of the generator and the oscillatory system for any changes 
in the physical properties (wave resistance) of the treated medium under ultrasonic action. 
Let us consider in more detail the design features of ultrasonic electronic generators 
designed to power ultrasonic oscillatory systems used to influence gaseous media. 
A distinctive feature of such oscillatory systems is the ability to generate ultrasonic 
vibrations with an intensity of at least 140 dB, since at lower intensities the effectiveness of 

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