SU776651A1 - Apparatus for exciting ultrasonic field in liquid - Google Patents

Description

"" · “42ϊΜ The invention 'relates to ultrasound technology and may find application in technological isolation of industrial sectors ^: '

Really? / ¹ ”^ .....-; ;

’Devices are known that include PSpS? ^ E ^ We ₽2T6 ^ .1r ^ e06pazova · / '?' 'DD' ^ D'shIs for technological purposes, the main elements of which are magnetostrictive. vibrators that convert electrical vibrations into acoustic ones, which are transmitted through a membrane or transforming waveguides to a sound medium, where ultrasonic processing of parts takes place [1].

• '. The disadvantages of such devices are the small working volume of liquid per unit power of energy consumed, the non-continuous mode of operation of the converters _: localizes the developed cavitation zones ²⁰ near their radiating surface, and ^^^^^^^ The value of ultrasonic pressure is small. .All —- = / 771 it reduces'efficiency and produce 25

The closest in technical essence '^ / invention is a device for excitation of an ultrasonic field in

sse. ....., ...... _; drivers, source of bias, switches and their control system [2].

However, when switching the power from one transducer to another, it is necessary to turn off the ultrasonic generator, in addition, the device does not provide the normal operation of the transducer with the rated bias current for the entire duration of its' duty cycle, as a result of which it is necessary to 'significantly increase the power of the direct current source' .

The aim of the invention is to increase the operational efficiency of the installation by increasing the volume of voiced fluid per unit power of the power source.

This is achieved by the fact that the transducers are interconnected sequentially and connected to a bias source, and the switches are each connected at one end to an ultrasonic generator; and to the other, to a common point between two adjacent transducers.

The drawing shows a block diagram of a device.

The device consists of series-connected transducers 1 connected to a source of direct current 2 _h magnetization, and through the switches 3 are connected with an ultrasonic generator

ίί—. .¾ .. _,? . >. J * -w. World Cup * JV l. LSH Λ. J * * l-r LJL XT * Vll V u * * W CHU XT * ёр? Гт (ф7 ^ 짹йт0ЬУр ' ^| й ^, кци'1 ¹ нйй ^ ^ пр ^ brazOl50 ~ ~ , under = - Ш 'll- Bi .Л-. <are connected to the control system 5. The switches can be made on the basis of resistors, optocouplers, etc., or on the basis of si ...... mystryuv. - - - The device works "as follows: When the ^{device; ότ:} bias source 2 via converter / flows constant current bias, an AC voltage from the ultrasonic generator 4 is fed to '·' switches 3. With the system yn" 5 alignment exercising. st pb * ~ kolShe№yU "* principle, switches W / enabled by ...... Man, connected serially converters 1 to the generator 5. J *

The device biases the converters pb'stbyanyygm ^ bk; from a single source during continuous operation of the 'ultrasonic generator', significantly ....... significantly facilitates and simplifies the system of magnetic magnetization, since the total current of the DC source does not depend on the number of transducers. Continuous operation of the generator, excluding non-working. pause, allowing at the same _hour duty cycle with the prototype to increase the number of inverters to install, t. e. led away **

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Compiled by V. Pirogov Tehred V. Seryakova “'Editor Y. Gonchar _; ; —7, —.——,. Order 1752/66 Ed. №6'0'5 Circulation 569 'Subscription

NPO “Search” of the USSR State Committee for Inventions and Discoveries

- 113035, Moscow / Zh-35, Raushskaya nab., D. 4/5

Type of. Khark. before “Patent” / l-, ...._ “77 .——- - -ch 4 776651 to read her note.

working volume and manufacturer

Claims (1)

A device for exciting an ultrasonic field in a liquid, containing an _L ultrasonic generator, magnetostrictive Transducers, a source of supply 10, magnetization, switches, and a control system for them, characterized in that, in order to increase productivity, the transducers are interconnected sequentially and connection- · ..15-, page to the source of magnetization, а. the switches are each connected at one end to an ultrasonic generator, and at the other to a common point between two adjacent transducers. ' _v \,