Andrey N. Lebedev

High Power Ultrasonic Oscillatory Systems

In paper the reasons limiting raise of productivity ultrasonic processes by increase of energy supplied into liquid technological medium of acoustic vibrations in a regime of developed cavitation are analysed. It is shown, that the solution of a problem is creation of special ultrasonic oscillatory systems with the increased surface radiation of multiresonant working tools. Creation of practical designs and research of their functionalities has allowed to confirm an opportunity of essential increase in power of ultrasonic technological apparatuses.

Multifrequency ultrasonic transducer with stepped-plate disk

In article are suggest multifrequency ultrasonic transducer with stepped-plate disk. This device is mean for coagulation aerosols with 0.4 µm particle size. Also present method of engineering calculation stepped-plate radiator.

Ultrasonic oscillating system for radiators of gas media

In article the new construction of the multiple-unit piezoelectric transducer with the increased output power and a disk radiator, which has a refined thermal mode is offered. The designing procedure of bending vibration disk radiators is described. The developed constructions are implemented; their technical characteristics and functionality are explored.

Designing and efficiency analysis of half-wave piezoelectric ultrasonic oscillatory systems

The article is devoted to development and research of half-wave ultrasonic oscillatory systems (UOS) combining the piezoelectric transducer and step-radial concentrator with the mushroom-like working tool. The technique of engineering calculation and modeling technique of created UOS are considered, permitting to define the key parameters of UOS.

Designing of ultrasonic oscillation systems for technological devices

During the design stage, the modeling of a technological ultrasonic oscillator (UOS), combined with a step-exponential waveguide-concentrator was carry out. An analysis of the obtained modeling results and comparison tests of the constructed oscillation system, which was designed subject to the modeling results, verify the adequacy of the selected technique. The modeling calculations have adequate accuracy and allow the formulation of recommendations for ultrasonic oscillation systems development.

Method of analysis of ultrasonic radiators on the base of flexural vibrations of disks with step-variable form

In the article method of analysis of parameters of disk radiators of step-variable form according to requirements of technological process and geometric sizes of the disk is described.

Ultrasonic coagulation on the basis of piezoelectric vibrating system with focusing radiator in the form of step-variable plate

The article proposes a new method of particle coagulation with the help of ultrasonic vibrating system with the radiator in the form of disk step-variable in thickness. For practical application the design procedure of radiators of step-variable type is described.

Usage features of contact and noncontact measuring methods of oscillation amplitude during adjustment process of ultrasonic devices

The information on possibilities and specificities of usage of a noncontact stroboscopic measuring method of amplitude is presented in the article. Results of the stroboscopic method comparison with measuring by means of a hour-type displacement measurer are presented. The carried out analysis allows determining advantages and disadvantages of examined measuring methods.

The compact ultrasonic dryer for capillary-porous and loose materials

In the article describes the device for ultrasonic drying possessing enhanced specification received due to application drying chamber of the special form.

Transducers of High Intensity for Gas Media

The paper is devoted to practical problems of development and projection of piezoelectric transducers for gas media. Authors confirm effectiveness of application of the created piezoelectric phased focalizing emitter using an example of process of drying of linen in drum-type washing machines