CZ339392A3 - Device with concentration of acoustic energy - Google Patents

Abstract

The device consists of a vibration generator (2) and a nozzle (3), located on or above the radiating surface (1). In nozzle (3) a cavity (4) is formed which is filled with acoustically conductive medium (5). Generator Radiation Area (1) (2) oscillations is perpendicular to the axis of the cavity (4).

Description

(57) The apparatus comprises a vibration generator (2) and a nozzle (3) located on or above the radiating surface (1). A cavity (4) is formed in the nozzle (3) and is filled with an acoustically conductive medium (5). The radiating surface (1) of the oscillator generator (2) is perpendicular to the axis of the cavity (4).

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-1Equipment with acoustic concentration

FIELD OF THE INVENTION This invention relates to the use of ultrasonic wave energy produced by oscillatory generators.

BACKGROUND OF THE INVENTION

Known devices employing the acoustic energy of ultrasonic waves are typically used in inhalation devices to produce areosols from liquids. These devices operate by the action of the focusing of the energy of ultrasonic waves generated by a generally concave oscillator that is located in the bottom of the working vessel emitting generated If the ultrasonic energy in the focus at the working fluid level is sufficient, an acoustic fountain is formed on the surface from which small particles of liquid are separated and dispersed in the air.

Sometimes, the vibration generator container is closed or provided with a membrane positioned as a rule so as to pass through the focus of the focused ultrasonic energy at the level of the working fluid and there is a liquid medicament on the membrane.

In principle, a common drawback of known devices based on their operating function is the relatively low gain of focused ultrasonic energy usable for generating areosols above the level of the relatively operating volume of the working fluid in relation to the power input of a relatively large, large and laborious concave vibration generator.

Other devices utilize the energies of the ultrasonic waves generated by the oscillator to vibrate the resilient element, particularly in the form of a full truncated cone. Even in this case, the utilization of ultrasonic wave energy achieves a relatively low efficiency in relation to the dimensions, size and manufacturing demands placed on the oscillator.

SUMMARY OF THE INVENTION

The aforementioned drawbacks of the known solutions are eliminated by the acoustic energy concentration device according to the invention, characterized in that a nozzle of solid mass having a cavity is disposed on or above the emitting surface of the oscillator. The cavity nozzle is positioned such that The cavity is not cylindrical in shape but narrows away from the radiating surface. When shaping it is necessary to take into account the acoustic properties of the acoustically conductive medium, which is filled and the geometric dimensions of the radiating surface of the oscillator and its working frequency. be filled with an acoustically conductive medium, which may be a liquid or a gel, for the function of the device.

Advantageously, the cavity nozzle and the emitting surface of the oscillator generator are located in a container that is filled with an acoustically conductive medium. The container may be provided with a membrane which is located on the other side of the container than the emitting surface.

Further preferably, the cavity nozzle itself is located on the emitting surface of the oscillator and is provided with a diaphragm on a side opposite to that of the emitting surface.This diaphragm also covers the mouth of the cavity. most preferably a gel.

Also preferred is such a device with the concentration of acoustic energy according to the invention where _t is the wall of the nozzle has one or more openings to the cavity. The openings are at the bottom of the wall adjacent to the radiating surface.

BRIEF DESCRIPTION OF THE DRAWINGS

An embodiment of the invention is illustrated in the accompanying drawings, in which Fig. 1 represents the basic assembly of the device, Fig. 2 its arrangement and assembly with the container, Fig. 3 using the membrane on the nozzle. of

DETAILED DESCRIPTION OF THE INVENTION

In the particular embodiment of the invention shown in Fig. 2, the nozzle 3 with the cavity 4 is placed in a container 6, at the bottom of which is the emitting surface 1 of the mitem generator, and is filled with an acoustically conductive medium 5 which is liquid for this embodiment. waves generated by the T? mit generator are concentrated in the cavity 4 and directed to the ultrasonic energy concentration point. This is the level of the liquid level. A fountain is formed at the surface from which small particles of liquid are peeled to form areosol. The membrane 7 may be a liquid, e.g. a drug, from which areosol is formed.

In another particular embodiment, as shown in Fig. 2, the nozzle 3 is provided with a membrane 2 on the narrower opening of the cavity 4. The most preferred filling 5 of the cavity 4 is a gel for this embodiment. The film generator generates ultrasonic waves which are concentrated and directed by the cavity 4. to the concentration site;

the ultrasonic energy, which is the mouth of the cavity 4, and the diaphragm 8 is vibrated.

for both embodiments, a greater energy per unit area is obtained at the concentration point than on the emitting surface 1 of the generator 7 < mit.

In another particular embodiment, as shown in FIG. 4, the wall of the nozzle 3 is provided with apertures 90. The apertures are fed to the cavity 4, mixed and mixed as a mixture and the resulting liquid is discharged through the upper aperture of the cavity 4 via of concentrated ultrasonic wool.

Industrial applicability

The invention can be advantageously used for the construction of an aerosol generator for inhalation devices, humidifiers, carburetors for internal combustion engines, spray gun construction, pheromone atomizers or aromatic liquids and the like.

It can also be used for the construction of a fluid transport pump or mixing pump for forming emulsions of hardly emulsifying liquids with aqueous solutions.

Claims (4)

An acoustic energy concentration device comprising an oscillator of an acoustically conductive medium, characterized in that a nozzle (3) with a cavity (4), the axis of which is perpendicular to the radiating surface (1), is disposed on or above the radiating surface (1) of the Rim generator. 1) and is filled with an acoustically conductive medium (5), which is generally a liquid or a gel, the teat (4) tapering away from the radiating surface (1) H & rolcu / 2. A device with acoustic energy concentration according to claim 1, characterized in that the nozzle (3) with its cavity (4) and the radiation surface (1) of the mitogen generator (1) are arranged in a vessel (6) filled with acoustically conductive medium (5). ) and the vessel (6) may be provided with a membrane (7) located above the mouth opening (4) of the nozzle (3), 3. Equipment with acoustic energy concentration according to. (1. characterized in that the nozzle (3) is provided with a membrane (8) covering the mouth of the cavity (4) h on the side opposite to the radiating surface (1) An acoustic energy concentration device according to claim 1 (3), in its lower part adjacent to the radiating surface (1), having one or more openings (9) opening into its cavity (4). )