SU808165A1 - Ultrasonic generator - Google Patents

Description

(54) ULTRASOUND DEVICE

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The invention relates to ultrasound technology and can be used in technopological processes in which uniform distribution of the ultrasonic floor in the treated medium, Hanpiwep, is required during ultrasonic cleaning in a liquid.

 An ultrasonic device containing a transducer with a concentrator and bending waveguides is known, in which the bending waveguides are made up of parallel rods with different radii of inertia of the cross section, whose vibration modes correspond to the resonant frequency of the transducer ij.

A disadvantage of the known device is the low radiation efficiency.

The closest in technical essence is an ultrasonic device containing an electromechanical transducer, a concentrator, the input part of which is rigidly attached to

To the converter, and parallel to the placed flexural waveguides 2 are rigidly attached to the output.

A disadvantage of the known device is B of low efficiency due to the fact that the working section of the waveguides is not their entire length, since a bend loop, is made on one of the bending materials.

The purpose of the invention is to increase the radiation effect.

The goal is achieved by the fact that the output part of the virtual concentrator is bifurcated, while the distance between the centers of the ends of identical bifurcated parts projected onto the axis of the waveguide is equal to an odd length of quarter-wavelength of oscillatory oscillations i of the waveguides.

FIG. G presents, the proposed device, front view, in FIG. 2 - then, side view, in FIG. 3 - the same, top view

The device consists of paraplepit waveguides I and 2 of the same section; rigidly attached to the antinodes of displacement from bending vibrations to the concentrator 3 longitudinal vibrations. The output of the concentrator is bifurcated, the distance between the midpoints of the thoriums of identical bifurcated parts in the projectile on the axis of the waveguides is equal to an odd number of quarters of the wavelength L of bending oscillations in the waveguides, i.e.

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(g

+ 4

where and -0,1,2, ..

I 4

When high-frequency current is supplied to the exciting winding 4 of the transducer 5, longitudinal oscillations of the capacitor rider excite bending oscillations in waveguides 1 and 2.

The uniformity of radiation in the device is ensured by the arrangement of all the radiating surfaces of the waveguides in the same plane, as well as in the phase shift of the bending oscillations of the waveguide equal to L / 4, which is achieved by a corresponding design of the concentrator.

The efficiency of the device is ensured by the use of radiation: the entire radiating surface of the waveguides.

Claims (2)

Invention Formula An ultrasonic device containing an electromechanical transducer, a concentrator whose input is rigidly attached to the transducer, and parallel-arranged bending waveguides are rigidly attached to the output, characterized in that with increasing efficiency radiation, the output part of the hub is made in this case the distance between the serains of the forks of the forked parts projected onto the waveguide axis is equal to an odd number of quarters of the wavelength flexural vibrations in waveguides. Sources of information taken into account in the examination I. USSR Copyright Certificate № 281045, cl. B 06 B 1 / GS, 1968. 2. USSR author's certificate No. 279218, cl. B 06 B 1 / O8, 1969 (prototype). Fi1.g  , Fi9.Ъ