RU2465516C1 - Acoustic sprayer by kochetov - Google Patents

Abstract

FIELD: machine building. ^ SUBSTANCE: acoustic sprayer includes housing with acoustic generator arranged inside the housing in the form of nozzle and resonator, air and fluid supply branch pipes; housing is provided with a collar on one side of which there made is gas supply nozzle, and on the other side of the collar there fixed axisymmetrically to the housing is cylindrical sleeve rigidly attached to conical nozzle, and inside cylindrical sleeve there fixed is case with throttle holes the axes of which are parallel to the housing axis, as well as resonator rod is attached to the case coaxially to the housing; resonator disc is rigidly installed through central hole and a screw on free end of resonator rod opposite the section of conical nozzle with an axial gap; at that, in resonator disc there located are at least three blind holes being the part of acoustic generator of ultrasonic frequency range, which is made in the form of a conical nozzle coaxial to the housing and has annular throttle hole with outer diameter dc, which is formed with the nozzle section and resonator rod with diameter drod, and sprayed fluid is supplied through the branch pipe located perpendicular to the housing axis to annular cavity formed with the casing and external surface of the nozzle; at that, one end of casing is solid and connected to the housing, and in the other end enveloping the conical nozzle there made are throttle holes that are coaxial to annular throttle hole with outer diameter dc. ^ EFFECT: higher spraying efficiency and operating reliability. ^ 1 dwg

Description

The invention relates to means for spraying liquids, solutions and can be used in the agricultural, food and light industries.

The closest technical solution to the claimed object is an acoustic atomizer according to the patent of the Russian Federation No. 2409787, F02C 7/24, comprising a housing with an acoustic oscillation generator located in the form of a nozzle and resonator, nozzles for supplying air and liquid (prototype).

A disadvantage of the known acoustic atomizer is that it does not provide a high degree of atomization and reliability in the operation of the clearance adjustment mechanism.

The technical result is an increase in spraying efficiency and reliability.

This is achieved by the fact that in an acoustic atomizer containing a housing with an acoustic oscillation generator located in the form of a nozzle and a resonator, nozzles for supplying air and liquid, the housing is made with a shoulder, on one side of which a fitting for supplying gas is made, and on the other hand, a shoulder axisymmetrically fixed to the body is a cylindrical sleeve rigidly connected to the conical nozzle, and inside the cylindrical sleeve there is a clip with throttle holes whose axes are parallel to the axis of the body, and also coaxially to the body a resonator rod is fixed to the ferrule, on the free end of which, opposite to the cut of the conical nozzle with an axial clearance, the resonator disk is rigidly mounted through the central hole and screw, and at least three blind holes are located in the resonator disk, which are part of the sound vibration generator ultrasonic frequency range, made in the form of a conical nozzle, coaxial with the housing, and having an annular throttle hole with an outer diameter dc formed by a nozzle exit and a resonator rod m diameter dst, and the sprayed liquid is supplied through a nozzle perpendicular to the axis of the housing into the annular cavity formed by the casing and the outer surface of the nozzle, while one end of the casing is solid and connected to the housing, and throttle openings are made in the other end covering the conical nozzle coaxial with annular throttle bore with outer diameter dc.

Figure 1 shows a diagram of an acoustic atomizer, figure 2 is a diagram of a resonator disk.

The acoustic spray contains a housing 1 with a shoulder, on one side of which a nozzle 2 for supplying gas is made, and on the other hand, a cylindrical sleeve 3, rigidly connected to a conical nozzle 4, is fixed axisymmetrically to the body 4. A sleeve 9 with throttle holes 10 is fixed inside the cylindrical sleeve 3, the axes of which are parallel to the axis of the housing 1, and also coaxially to the housing 1, a resonator rod 11 is fixed to the yoke 9, on the free end of which, opposite the cut of the conical nozzle 4 with an axial clearance, the resonator is fixed suit 12 through the central aperture 15 and screw 13.

At least three blind (non-through) holes 14 are located in the resonator disk 12, which are part of the generator of sound vibrations of the ultrasonic frequency range, made in the form of a conical nozzle 4, coaxial with the housing 1, and having an annular throttle hole with an outer diameter dc formed cut nozzle and resonator rod 11 with a diameter of dst.

The sprayed liquid is supplied through a pipe 6 located perpendicular to the axis of the housing 1 into the annular cavity 8 formed by the casing 5 and the outer surface of the nozzle 4, while one end of the casing is made continuous and connected with the housing 1, and in the other end covering the conical nozzle 4, made throttle bores 7 coaxial with an annular throttle bore with an outer diameter dc.

Acoustic spray works as follows.

A spraying agent, such as air or gas, is supplied through the nozzle 2 through the throttle holes 10 of the ferrule 9 into an annular throttle hole with an outer diameter dc formed by a nozzle section 4 and a resonator rod 11, and then encounters a resonator disk 12 with blind resonant holes 14 in its path As a result of the passage of the generator of sound vibrations of the ultrasonic frequency range by a spraying agent (for example, air or gas), pressure pulsations arise in the latter, creating acoustic vibrations, the frequency which depends on the parameters of the resonator. The acoustic vibrations of the spraying agent contribute to finer atomization of the liquid supplied through the pipe 6 to the cavity 8, formed by the casing 5 with throttle holes 7 in the end of the casing 5, and then crushed under the influence of acoustic air vibrations into small droplets, resulting in the formation of a spray torch with air, the root angle of which is determined by the angle of inclination of the conical surface of the nozzle 4. Experiments have shown that at an air pressure of 100 kPa, the average diameter of the droplets is 90 μm, while As the air pressure increases by about 4 times (up to 400 kPa), the average droplet diameter decreases slightly and amounts to 87 μm.

Claims (1)

An acoustic sprayer comprising a housing with an acoustic oscillator in the form of a nozzle and a resonator, nozzles for supplying air and liquid, characterized in that the housing is made with a shoulder, on one side of which a fitting for supplying gas is made, and on the other hand, the shoulder is axisymmetric to the body a cylindrical sleeve fixed rigidly connected to the conical nozzle is fixed, and a sleeve with throttle holes is fixed inside the cylindrical sleeve, the axes of which are parallel to the axis of the housing, and also coaxially to the housing a resonator rod is fastened to the ferrule, on the free end of which, opposite the cut of the conical nozzle with an axial clearance, the resonator disk is rigidly mounted through the central hole and screw, and at least three blind holes are located in the resonator disk, which are part of the ultrasonic frequency range sound generator made in the form of a conical nozzle coaxial with the casing and having an annular throttle bore with an external diameter dc formed by a nozzle exit and a dia meter dst, and the sprayed liquid is supplied through a nozzle perpendicular to the axis of the housing into the annular cavity formed by the casing and the outer surface of the nozzle, while one end of the casing is solid and connected to the housing, and throttle openings are made in the other end covering the conical nozzle coaxial with annular throttle bore with outer diameter dc.

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