JPH07256171A - Ultrasonic vibrator and atomizer - Google Patents

Abstract

PURPOSE:To control the flow rate and direction of an atomization medium, miniaturize the device and secure the safety by providing a part for diffusing the medium by capillarity on the ultrasonic wave emitting surface of a ultrasonic vibrator driven by the power supplied from an oscillator. CONSTITUTION:When a hand to be sterilized is put in a main body case 13, the hand is detected by a sensor, and a liq. feed pump 18 and an oscillator 20 are respectively driven. The electrical energy supplied from the oscillator 20 is converted to the mechanical energy by a vibrator 14, and a reticular metallic sheet 16 is vibrated. Consequently, an antiseptic dripped on a liq. inlet 16a of the sheet 16 is diffused over the gap between the emitting metallic surface 14h except the adhered part and the sheet 16 by capillarity and stored in the mesh opening. Accordingly, when the emitted ultrasonic wave acts on the antiseptic, the micronized antiseptic droplet is sprayed from the entire sheet 16. Namely, the sheet 16 is provided with atomizer function acting in the same way as an exponential horn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic vibration device and an atomizing device, for example, molten metal spray, pesticide spray,
Fumigation disinfection spray, vaporizer, turbine, paint sprayer, spray drying, slurry spray and burner, fuel injection,
It is used for spraying aromatic materials.

[0002]

2. Description of the Related Art In recent years, nosocomial infections in hospitals and clinics have become a social problem. To prevent this nosocomial infection, for example, an antiseptic solution containing 80% alcohol and 20% surfactant is automatically added. There is a demand for an apparatus that can be sterilized and sterilized by disinfecting the fingers and that does not require the use of hand wipes to prevent secondary infection. Therefore, sterilizing and disinfecting a hand is considered, in which the disinfecting liquid is atomized and ejected in a spray manner so that an appropriate amount of the disinfecting liquid is instantaneously attached so as to be moistened over the entire hand and the use of hand wipes is unnecessary.

At present, means for utilizing ultrasonic waves to atomize a liquid are generally adopted. The reason is that the amount of atomization and the atomized particle size have the advantage that they can be independently controlled by varying the power supplied to the ultrasonic transducer and the ultrasonic frequency. As the ultrasonic atomizer, the one used in the frequency band of 800 KHz to 3 MHz is most frequently used, and the representative one is the ultrasonic humidifier. This ultrasonic humidifier
Although it has the advantage that it does not have the various drawbacks of the previous evaporation type and rotary atomization type atomizers, the ions contained in the water are used to bring the ultrasonic transducer into direct contact with the liquid to be atomized. Has the drawback that it combines with carbon dioxide in the air to produce a white powder compound.

FIG. 1 shows an example of the humidifier which eliminates the drawbacks.
There are humidifiers for medical use as shown in 2. In this humidifier, an ultrasonic transducer 2 is provided at the bottom opening of the water tank 1 and water 5
The liquid 6 to be atomized is fixed to the water 5 by the fixing screw 4 via the support rubber 3 in a state of being in contact with the water 5 by the thin permeable membrane 7 made of a corrosion resistant plate such as a stainless plate or a polyester film. It is stored in the atomization chamber 8 in an isolated state. Therefore, the liquid 6 to be atomized has an ultrasonic transducer 2
Since the sound wave from the object is transmitted by propagating through the water instead of being directly hit, there is no drawback of generating the white powder compound as described above. Then, the droplets of the atomized liquid 6 are sprayed through the discharge pipe 10 by the air sent from the blower pipe 9 to the atomization chamber 8.

[0005]

By the way, the above-mentioned medical humidifier requires a compressor or the like for sending the air to the atomizing chamber 8 through the blower pipe 9, so that the entire device becomes large in size and the nosocomial infection is prevented. Not only is it unsuitable for installation in hospital toilets, etc., but the humidifier structurally requires a high ultrasonic frequency above a certain level. The diameter is too small to be suitable.
Further, when the water 5 for propagating the sound wave is lost, there is a drawback that the heat is generated and damage occurs, and there is a problem in safety.

Further, it is suitable for hand disinfection of 30 μm
In order to obtain a droplet having an atomized particle size of 120 μm, it is necessary to drive the ultrasonic transducer in the frequency range of 10 KHz to 100 KHz. As shown in FIG. 13, such an ultrasonic atomizing device has a configuration in which a bolt tightening type vibrator 11 such as a Langevin type vibrator or a magnetostrictive vibrator and an exponential horn 12 are combined. The atomizing function is obtained by the vertical horn 12.
However, in this configuration, the exponential horn 12
As a result, the atomized droplets are concentrated at approximately one point, so that it is suitable for applications such as a combustion burner, but is not suitable for applications such as an atomizer and cannot be used for the above-mentioned sterilization of hands. Further, since the relatively long exponential horn 12 is combined with the bolt tightening type vibrator 11, the shape becomes large and the bolt tightening type vibrator 11 itself becomes expensive.

The present invention has been made to solve these problems, and provides an ultrasonic vibrating device adapted to various atomizing devices, as well as the flow rate of the atomizing medium and the direction of the atomized mist. It is an object of the present invention to provide a safe and inexpensive atomizing device that can be controlled and downsized.

[0008]

In order to achieve the above-mentioned object, an ultrasonic vibration device of the present invention is an ultrasonic vibration device for high-power ultrasonic transducers driven by electric power of a predetermined frequency supplied from an oscillator. The surface is characterized in that it is provided with a medium diffuser in the form of which the atomizing medium supplied to a part of it is spread and held over the emitting surface by capillary action.

It is desirable that the high-power ultrasonic vibrator is a bolted Langevin ultrasonic vibrator. The medium diffusing section is composed of a mesh plate or a perforated plate bonded and fixed to the ultrasonic wave emitting surface, or a rough surface in which a large number of fine grooves are arranged vertically and horizontally on the ultrasonic wave emitting surface. It is desirable that a plurality of portions that are a part of the mesh plate or the perforated plate be fixed to the ultrasonic wave emitting surface by any means such as adhesion, screwing or welding.

Further, a part of the medium diffusing portion is formed on the mesh plate or the perforated plate so as to project laterally with respect to the ultrasonic wave emitting surface and at a lateral position of the high power ultrasonic vibrator. A medium introducing portion for receiving the atomized medium dropped from the medium supply system arranged to guide the atomized medium is integrally formed on the upper surface. In addition to this, the medium introducing portion is constituted by a supply hole extending from the side portion of the high-power ultrasonic transducer to the ultrasonic emission surface, and the tip portion of the ultrasonic emission surface of the high-power ultrasonic transducer. It is desirable that it is formed by a through hole that penetrates between the rear end portion on the opposite side and a plurality of supply holes that extend from the surface portion of the high-power ultrasonic transducer to the ultrasonic emission surface. .

Further, in the medium diffusing portion constituted by a rough surface in which a large number of fine grooves are arranged vertically and horizontally on the ultrasonic wave emitting surface, the side surface of the ultrasonic transducer for high power reaches the ultrasonic wave emitting surface. Those configured by supply holes, those configured by through holes penetrating between the front end of the ultrasonic wave emitting surface of the high-power ultrasonic transducer and the rear end on the opposite side, high-power ultrasonic waves It is desirable that the vibrator is configured by a plurality of supply holes extending from the surface portion of the vibrator to the ultrasonic wave emitting surface.

On the other hand, the atomizing device of the present invention is provided with an ultrasonic vibrating device in which the medium diffusing section and the medium introducing section are provided on each of the ultrasonic wave emitting surfaces for emitting ultrasonic waves in different directions. In addition, it is characterized in that each medium introduction portion is provided with a medium supply system for supplying a predetermined amount of atomization medium.

The medium supply system may be provided independently of each other.

[0014]

The high-power ultrasonic transducer converts electric energy of a predetermined frequency supplied from the oscillator into mechanical energy. On the other hand, the atomizing medium supplied to a part of the medium diffusing portion provided on the ultrasonic wave emitting surface of the vibrator spreads and is held on the entire ultrasonic wave emitting surface by the capillary phenomenon. When the ultrasonic wave emitted from the ultrasonic wave emission surface of the vibrator acts on the atomized medium, the atomized medium is atomized from almost the entire ultrasonic wave emission surface, and droplets are sprayed. In this way, the medium diffusion part
The atomization function can be obtained by operating in the same manner as an exponential horn connected to a vibrator in the past, so it can be extremely miniaturized and requires a high ultrasonic frequency above a certain level like a humidifier. Unlike, it can be driven in any frequency range to obtain the required atomized particle size. Therefore, it is possible to obtain an apparatus which is extremely small and suitable for sterilization.

If a plurality of portions, which are a part of the mesh plate or the perforated plate as the medium diffusion part, are fixed to the ultrasonic wave emitting surface, the non-adhered part occupying most of the mesh plate or the perforated plate. There is an advantage that atomization can be efficiently performed and spraying can be performed in a diffused state. Moreover, the atomized particle size of the droplet is determined by the ultrasonic frequency supplied from the oscillator to the oscillator,
Since the atomization amount can be variably adjusted by the medium supply amount by the medium supply system, the electric power supplied from the oscillator to the vibrator can be made constant, and the adjustment can be easily performed. Furthermore, if atomization is performed using a mesh plate or a perforated plate, there is an advantage that the atomization state such as diffusion or concentration can be changed depending on the opening diameter and shape thereof.

Further, as a medium diffusing portion, a radiating metal surface having a rough surface shape in which a large number of fine grooves are longitudinally and laterally arranged on the ultrasonic wave radiating surface also has a diffusing function similar to that of the mesh plate. The medium introducing portion is a supply hole extending from the side portion of the oscillator to the ultrasonic wave emitting surface, a through hole penetrating between the front end portion of the ultrasonic wave emitting surface of the oscillator and the rear end portion on the opposite side thereof, and further, In the case of being constituted by a plurality of supply holes from the surface portion of the vibrator to the ultrasonic wave emitting surface, the liquid is supplied through the supply holes inside the vibrator, and the flow rate can be controlled. Further, the mist can be emitted in any direction depending on the position and the number of the holes on the ultrasonic wave emitting surface serving as the liquid outlet.

Further, the high-power ultrasonic transducer radiates ultrasonic waves in mutually different directions on both end faces thereof, and the above-mentioned medium diffusing section and medium introducing section are provided for each of these ultrasonic wave radiating surfaces. Thus, the atomization amount can be twice as large as that when only one ultrasonic wave emitting surface is used. Here, if an independent medium supply system is provided for each medium introduction part, different liquids can be atomized simultaneously.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a partially cutaway front view showing an overall schematic configuration of an embodiment of the present invention when applied to a hand sterilizing / disinfecting apparatus. In the figure, a bolted Langevin type ultrasonic transducer 14 penetrates the side surface of the main body case 13 in the main body case 13 whose front surface (front side) is partially open, and supports a plurality of inward projections. It is supported in a suspended state by each tip of the rod 15. In addition, the bolted Langevin type ultrasonic transducer 14 includes two annular piezoelectric elements 14c and 14d between the radiating metal block 14a and the rear metal block 14b, and the bolt 14e to the radiating metal block 14a. Also, the rear metal block 1 is inserted through the piezoelectric elements 14c and 14d.
4b is screwed into the screw hole and is tightened with a bolt 14e so as to be integrated.
Negative and positive electrode plates 14f and 14g are attached to d, respectively. In this bolted Langevin type ultrasonic transducer 14, since the tensile stress of the piezoelectric elements 14c and 14d is weaker than the compressive stress, an ultrasonic cleaning machine or ultrasonic processing in which a large power is input by giving tensile stress with the bolt 14e is used. It is used as an ultrasonic wave oscillation source for equipment such as machines. In the figure, the case where a low-price commercially available ultrasonic cleaning machine is used is illustrated.
Is the radiation metal surface 14h with the radiation metal block 14a at the tip.
It has an expanding shape in which the diameter is gradually increased toward the side, and has an atomization diffusion effect, and is supported in a hanging state with the radiating metal surface 14h facing downward. Note that the present invention is not limited to the bolted Langevin type vibrator 14, and other high-power ultrasonic vibrators such as a metal magnetostrictive vibrator and a ferrite vibrator can be used without causing any inconvenience.

A mesh metal plate 16 is bonded and fixed to the radiation metal surface 14h of the radiation metal block 14a which is the lower end surface of the vibrator 14. As shown in FIG. 2, the mesh-shaped metal plate 16 has a shape in which the liquid introducing portions 16a are integrally projected from four locations at equal intervals on the outer peripheral portion, and each of the liquid introducing portions 16a is formed. The outer peripheral portion and the central portion, excluding the portion, are coated with an adhesive to form the radiating metal surface 14
It is glued to h. Adhesive part 1 of this mesh metal plate 16
Although 6b is not limited to the position shown in the drawing, at least a part of 6b may be provided discontinuously instead of being fixed. still,
Experimental results have shown that the above-mentioned mesh metal plate 16 is most effective as a mesh plate, but a mesh plate made of plastic or ceramic can also be used.

Further, four liquid supply nozzles 17 for supplying the disinfecting liquid to the mesh-shaped metal plate 16 are positioned with the liquid supply ports at the tips thereof above the respective liquid introduction parts 16 of the mesh-shaped metal plate 16. The main body case 13 is fixed so as to penetrate therethrough. A disinfecting liquid in a liquid storage tank (not shown) is supplied to each liquid supply nozzle 17 through a tube 19 by driving a liquid supply pump 18, and each mesh metal plate 16 is introduced from a liquid supply port at each tip. Each is dropped on the portion 16a. on the other hand,
In the vibrator 14, vibration generated by supplying a voltage of a predetermined frequency from the oscillator 20 to the piezoelectric elements 14d and 14c through the positive and negative electrode plates 14g and 14f is transmitted to both metal blocks 14a and 14b through mechanical contact. Resonance occurs due to the standing wave generated thereby. Although not shown in the figure, a switching photoelectric sensor for detecting that a hand has been put in through the opening of the main body case 13 in a non-contact manner is provided in the lower front portion of the main body case 13.

The operation of the embodiment of the present invention having the above construction will be described. When the hand is put into the case 13 through the front opening of the case 13 to disinfect it, the photoelectric sensor detects the contactlessly, and the liquid supply pump 18 and the oscillator 20 are both powered and driven. The vibrator 14 converts electric energy of a predetermined frequency supplied from the oscillator 20 into mechanical energy, and the vibrator 14 excites the mesh metal plate 16 to cause flexural vibration. The disinfecting liquid is dropped from the liquid supply nozzles 17 onto the liquid introducing portions 16a of the flexurally vibrating mesh-shaped metal plate 16 as shown by the broken line in FIG.

The disinfectant liquid dropped on each of the liquid introducing portions 16a is capillarized in the entire gap between the radiating metal surface 14h of the mesh metal plate 16 excluding the adhesive portion 16b and the mesh metal plate 16. It is held in a state in which it spreads and accumulates in the mesh holes of the mesh metal plate 16. The ultrasonic waves radiated from the radiating metal surface 14h of the vibrator 14 act on this disinfectant solution, so that droplets of atomized disinfectant solution are sprayed from almost the entire mesh metal plate 16. That is, the mesh metal plate 16 bonded and fixed to the radiating metal surface 14h acts in substantially the same manner as the exponential horn 12 shown in FIG. 13 to obtain the atomizing function. The atomized disinfectant solution adheres so as to moisten the entire hand contained in the main body case 13, and the hand is sterilized and disinfected instantly. By the way, when the actual measurement result is shown, 30 W of alternating electric power was supplied to the vibrator 14 at a frequency of 40 KHz, and the disinfecting liquid was dropped on one liquid introducing portion 16a of the mesh metal plate 16 having a mesh hole diameter of 500 μm. By the way, 0.6
An atomization rate of cc / sec could be obtained.

Further, when the atomized disinfectant solution is sufficiently adhered to the hand, if the hand is taken out of the main body case 13, the photoelectric sensor detects it and the driving of the pump 18 and the oscillator 20 is stopped. Stops spraying. Therefore, every time a hand is put into the main body case 13, only the required amount of the disinfectant solution is automatically dispensed, which is economical, and an appropriate amount of the disinfectant solution adheres to the hand as a droplet, so that the hand-wiping is not necessary. There is no need to use it and there is no fear of secondary infection.

This ultrasonic atomizer has a simple structure in which the mesh metal plate 16 is joined to the radiating metal surface 14h of the vibrator 14 to partially fix the vibrator 14 to a frequency of 10 KHz or more.
It can be driven at any frequency within the frequency range of 100 KHz to obtain an atomized particle size of 30 μm to 120 μm, so it is extremely compact and does not require a compressor or exponential horn. It is possible to obtain a device suitable for, and it is extremely safe compared with a humidifier. Furthermore, by partially adhering a plurality of locations of the mesh metal plate 16 excluding the liquid introducing portion 16a to the radiating metal surface 14h, the disinfecting liquid dropped on the liquid introducing portion 16a causes most of the mesh metal plate 16 to be removed. It has the advantage that it can be efficiently dispersed toward the non-adhesive portion that occupies, and that the non-adhesive portion can be efficiently atomized and sprayed in a diffusion state. The atomized particle size of the liquid droplets can be determined by the ultrasonic frequency used, and the atomized amount can be variably adjusted by the flow rate of the pump 18, so that the power supplied from the oscillator 20 to the vibrator 14 is constant. And has the advantage of being easy to adjust. Furthermore, since the mesh metal plate 16 is used for atomization, it is possible to change the atomized state such as diffusion or concentration depending on the diameter and shape of the mesh holes of the mesh metal plate 16, and at the same time, mesh metal plate. Since the atomization amount can be adjusted by the area of the non-adhesive portion of the above 16, the atomization amount can be set while maintaining a constant atomization state.

The present invention is not limited to the above embodiments, and various modifications that can be included in the present invention will be described below. Instead of the mesh metal plate 16 of the above embodiment,
As a perforated plate, for example, as shown in FIG. 3, even if a punching metal plate 21 having a large number of small holes is fixed to the radiating metal surface 14h, the same effect as in the above embodiment can be obtained. The partial fixing of the punching metal plate 21 to the radiating metal surface 14h is replaced with the bonding means of the above-described embodiment, and a plurality of fixing screws 22 are inserted into the punching metal plate 21 as shown in FIG. It may be performed by means of screwing with the block 14a, or welding means may be used instead of the fixing screw 22. Further, even if the liquid introducing portion 21a of the punching metal plate 21 is provided only at one place as shown in the figure, the liquid dropped in the liquid introducing portion 21a spreads over the entire surface due to the capillary phenomenon, so that a corresponding effect can be obtained. it can.

Further, as a liquid supply means to the vibrator 14,
As shown in FIG. 4A, the mesh metal plate 16 or the punching metal plate 21 is integrally formed with a liquid introducing portion 23 having a width and a length larger than those of the liquid introducing portions 16a and 21a having the above-mentioned protruding shape. The liquid introducing part 23 is provided while protruding.
The curved disinfectant has a U-shaped cross section and is directly connected to the liquid supply nozzle 17, so that the disinfectant liquid can be reliably supplied. Further, as shown in FIG. 2B, the disc-shaped mesh metal plate 16 or punching metal plate 21 has a diameter slightly larger than the radiating metal surface 14h of the vibrator 14, so that the annular liquid introduction is performed. When the portion 24 is projected laterally beyond the outer circumference of the radiating metal surface 14h, and the disinfecting liquid is dripped onto the liquid introducing portion 24 from the liquid supply nozzle 17, the liquid shown in FIGS. Since it is unnecessary to position the liquid supply nozzle 17 with respect to the introduction portions 16a and 21a, the liquid supply nozzle 17 can be easily attached.

Further, as another liquid supply means to the vibrator 14, as shown in FIG. 5A, a through hole extending from the side portion of the vibrator 14 to the radiating metal surface 14h is formed in the radiating metal block 14a of the vibrator 14. 25, the liquid supply nozzle 17 may be fitted into the through hole 25. Alternatively, as shown in FIG. 3B, a liquid supply groove 26 extending from a side portion of the vibrator 14 to the radiating metal surface 14h is formed in the radiating metal block 14a of the vibrator 14, and a liquid supply pipe is provided in the liquid supplying groove 26. The liquid supply nozzle 27 may be fitted and fixed, and the liquid supply nozzle 17 may be connected to the liquid supply pipe 27. In this way, the radiating metal surface 14
The shape of the through hole 25 reaching h is not limited to these,
As shown in FIG. 6, the liquid supply hole 6 is formed in the outer portion of the bolt 63.
0 may be formed, and a tube 62 is fitted on the liquid supply side similarly to the example of FIG. 5, and the liquid is supplied through this tube 62. Further, the liquid introducing portion 64 is arranged so as to face the radiating metal surface 14h of the vibrator 14, and is screwed to the vibrator 14 by the set screw 61.

Further, as another example of the liquid supply path, as shown in FIG. 7, a liquid supply hole 70 passing through the center of the bolt 74 and penetrating from the rear end to the front end of the vibrator 14 is formed. is there. Similarly to the above, a tube 73 is fitted into the rear end portion of the liquid supply hole 70, and the liquid is supplied through the tube 73. Further, the liquid introducing part 75 is arranged so as to face the radiating metal surface 14h of the vibrator 14, and the set screws 71a, 71
It is screwed to the vibrator 14 by b.

The configuration of FIGS. 5 to 7 is an example in which there is one liquid supply hole, but as shown in FIG. 8, it enters the radiation metal block 14a of the vibrator 14 from the side of the radiation metal block 14a, and the radiation metal block is formed. Four liquid supply holes 80a, 80b, 8 inside 14a
It is configured to branch into 0c and 80d and reach the radiation metal surface 14h. Liquid supply holes 80a, 80b, 80c, 80d
A liquid reservoir 85 is formed at the branching point (the front part of the bolt 83), and the liquid supplied from the tube 62 fitted on the liquid supply side is supplied to the liquid supply holes 80a, 80a.
It is designed to smoothly flow to b, 80c and 80d. This liquid supply system is of a type in which one nozzle 82a is used to supply each liquid supply hole as shown in FIG. 11C, or two nozzles 82a, 82 are shown as shown in FIG.
There is a type that supplies each liquid supply hole by b.
In the latter case, two kinds of liquids can be mixed and atomized. The number of nozzles is not limited to two as described above, and a plurality of nozzles may be provided as needed.

5 to 8, the disinfecting solution can be directly supplied to the radiating metal surface 14h of the vibrator 14, so that the mesh metal plate 16 and the punching metal plate 2 can be supplied.
It is not necessary to bond 1 etc. to the radiation metal surface 14h. Also,
As shown in FIGS. 9A and 9B, a large number of fine grooves 28 are vertically and horizontally arranged on the radiating metal surface 14h to form a rough surface so that the radiating metal surface 14h itself has a disinfecting solution diffusing function. However, the same effect as that of the mesh metal plate 16 and the punching metal plate 21 can be obtained.

Each of the embodiments described above shows an ultrasonic vibration device in which the medium diffusing portion is formed so as to face one ultrasonic wave emitting surface of the vibrator 14 or to face it. The vibrator used in such an ultrasonic vibration device vibrates at both ends. The atomizing device that atomizes the vibrating surfaces at both ends will be described below.

First, as shown in FIG. 10 (a), a bolted Langevin type ultrasonic transducer 140 is provided with a through hole 93a for inserting the electrode portion, and a holding member made of rubber. It is supported by the material 93. Nets 94a and 94b (medium diffusion portions) are provided on the ultrasonic wave emitting surfaces on both end surfaces of the vibrator 140, respectively. Further, the terminal 14j of the electrode portion is connected to the vibrator 140.
Is connected to an oscillation circuit 95 for driving the. Further, as shown in FIG. 3B, the holding material 93 is provided with a recess for protecting the terminals and the like of this electrode portion.
Further, a pipe 90 for supplying a liquid to each of the nets 94a and 94b is provided, and this pipe 90 is connected to a liquid tank 91 via a pump 92. With this configuration, when the pump is driven, the liquid in the liquid tank 91 is supplied to the nets 94a and 94b through the pipe 90.

With this configuration, the atomization amount can be doubled as compared with the atomization device using one ultrasonic radiation surface. Further, FIG. 11 shows a configuration using an ultrasonic vibration device similar to that shown in FIG. 10, but has a different liquid supply system. That is, the liquid supply system is the net 94.
Each of a and 94b is provided independently. Each of the nets 94a, 94b is provided with holes 102a, 102b which enter from the side surface of the oscillator 140 and reach its ultrasonic wave emitting surface. The pipes 100a, 10 which communicate with the respective holes 102a, 102b.
0b is connected to liquid tanks 101a and 101b via pumps P1 and P2, respectively.

With this structure, the liquid is independently supplied to the nets 94a and 94b by driving the pumps P1 and P2. Therefore, if necessary, the same type of liquid can be supplied to the nets 94a and 94b, or different types of liquid such as water and oil, water and alcohol, deodorant and fragrance can be simultaneously atomized. Further, the adjustment of the amount can be appropriately performed by controlling the pumps P1 and P2.

[0035]

As described above, according to the ultrasonic vibrating device of the present invention, a part of the ultrasonic vibrating surface of the ultrasonic oscillator for high power which is driven by being supplied with electric power of a predetermined frequency from the oscillator is used. Since the atomizing medium supplied to the structure is provided with a medium diffusing portion having a shape that spreads and is held on the entire radiation surface by a capillary phenomenon, it is substantially the same as the exponential horn connected to the vibrator in the conventional example. , It is possible to drive in an arbitrary frequency range to spray droplets of a required atomized particle size in a diffused state, which is highly safe and extremely small. A suitable device can be obtained for hand sterilization. Moreover,
The atomized particle size of the liquid droplets can be adjusted by selecting the frequency of the oscillator to be used, and the atomization amount can be variably adjusted by the medium supply system, so the power supplied from the oscillator to the oscillator can be kept constant. It has the advantage that it can be adjusted easily.

If a plurality of portions, which are a part of the mesh plate or the perforated plate as the medium diffusion portion, are fixed to the ultrasonic wave emitting surface, the non-adhered part occupying most of the mesh plate or the perforated plate. There is an advantage that the atomized state can be efficiently atomized and sprayed in a diffused state, and the atomized state such as diffused or concentrated can be changed depending on the opening diameter and shape of the mesh plate or the perforated plate.

Further, when the medium introducing portion is integrally formed with the mesh plate or the perforated plate so as to project laterally with respect to the ultrasonic wave emitting surface, it is not necessary to position the liquid supply nozzle attached to the medium introducing portion. The mounting becomes easy. Further, the medium introduction portion, a supply hole from the side portion of the oscillator to the ultrasonic wave emitting surface, a through hole penetrating between the front end portion of the ultrasonic wave emitting surface of the oscillator and the rear end portion on the opposite side, Furthermore, when it is composed of a plurality of supply holes from the surface part of the oscillator to the ultrasonic wave emitting surface, the flow rate can be controlled, and it can be set arbitrarily depending on the position and the number of holes on the ultrasonic wave emitting surface that will be the outlet of the liquid. The fog can be emitted in the direction of. As a result, the application can be expanded from an aromatic agent that requires a very small amount of atomization to an oil fan heater that requires a large amount of atomization.

Further, according to the atomizing device of the present invention, the above-mentioned medium diffusing section and medium introducing section are provided for both of the ultrasonic wave emitting surfaces for emitting ultrasonic waves in mutually different directions. The atomization amount can be twice as large as that when only one ultrasonic wave emitting surface is used. Here, if an independent medium supply system is provided for each medium introduction part, different liquids can be atomized simultaneously.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a bottom view of the essential part of the embodiment of the present invention shown in FIG.

FIG. 3 is a bottom view of another example of the medium diffusion unit applied to the embodiment of the present invention.

FIG. 4 is a perspective view of a main part of another example of the medium introducing section applied to the embodiment of the present invention.

FIG. 5 is a perspective view of a main part of still another example of the medium introducing section applied to the embodiment of the present invention.

FIG. 6 is an explanatory diagram of still another example of the medium introducing unit applied to the embodiment of the present invention.

FIG. 7 is an explanatory diagram of still another example of the medium introducing unit applied to the embodiment of the present invention.

FIG. 8 is an explanatory diagram of still another example of the medium introducing unit applied to the embodiment of the present invention.

9A and 9B are a bottom view and a vertical sectional view of still another example of the medium diffusion portion of the present invention.

FIG. 10 is a diagram illustrating an example of an atomizing device of the present invention.

FIG. 11 is a diagram for explaining another embodiment of the atomizing device of the present invention.

FIG. 12 is a vertical cross-sectional view of a conventional medical humidifier.

FIG. 13 is a schematic side view of a conventional ultrasonic atomizing device.

[Explanation of symbols]

14,140 ... ・ Bolting Langevin type ultrasonic transducer 14h ・ ・ ・ ・ Radiation metal surface (ultrasonic radiation surface) 16 ・ ・ ・ Reticulated metal plate (mesh plate) 16a ・ ・ ・ ・ ・ ・ Reticulated Liquid introduction part (medium introduction part) of metal plate 16b ... Adhesive part of mesh metal plate 17 ... Liquid supply nozzle (medium supply system) 20 ... Oscillator 21 ... Punching metal plate (Perforated plate) 22 ... Fixing screws 23, 24 ... Liquid introduction part (medium introduction part) 25 ... Through hole (medium supply path) 26 ... Liquid supply groove (medium supply path) ) 28 ... Narrow groove

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[Procedure amendment]

[Submission date] April 25, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 10

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 11

[Correction method] Change

[Correction content]

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

Meanwhile, atomizing device of the present invention, together with which the medium diffused portion and the ultrasonic vibration device provided with the medium inlet portion is provided for the ultrasonic emitting surface for emitting ultrasonic waves, this media supply system for supplying a predetermined amount of the atomizing medium to medium body inlet portion is characterized by comprising provided.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

In addition, ultrasonic waves are emitted in different directions.
Fog equipped with an ultrasonic vibration device having an ultrasonic radiation surface
In this case, the medium supply system is independent of each other.
The configuration may be modified.

Claims (11)

[Claims] 1. An ultrasonic wave emitting surface of a high-power ultrasonic transducer which is driven by being supplied with electric power of a predetermined frequency from an oscillator, and an atomizing medium supplied to a part of the ultrasonic wave transmitting surface is entirely covered by the capillary phenomenon. An ultrasonic vibrating device, comprising a medium diffusing section that is expanded and held. 2. The ultrasonic vibration device according to claim 1, wherein the ultrasonic vibrator for high power is a bolted Langevin type ultrasonic vibrator. 3. The ultrasonic vibration device according to claim 1, wherein the medium diffusing portion is formed of a mesh plate or a perforated plate that is bonded and fixed to the ultrasonic wave emitting surface. 4. The ultrasonic vibrating device according to claim 1, wherein the medium diffusing section is constituted by a rough surface in which a large number of fine grooves are vertically and horizontally arranged on the ultrasonic wave emitting surface. . 5. A plurality of portions which are a part of the mesh plate or the perforated plate are fixed to the ultrasonic wave emitting surface by any means of adhesion, screwing or welding. The ultrasonic vibration device according to. 6. The mesh plate or perforated plate is formed so as to project laterally with respect to the ultrasonic wave emitting surface, and one of the medium diffusing portions is provided at a lateral position of the high power ultrasonic vibrator. 6. The ultrasonic vibration according to claim 3 or 5, wherein a medium introducing portion for receiving an atomizing medium dropped from a medium supply system arranged to guide the atomizing medium to the upper portion is integrally formed on the upper surface. apparatus. 7. The medium introducing portion is constituted by a supply hole extending from a side portion of the high-power ultrasonic transducer to the ultrasonic wave emitting surface.
3. The ultrasonic vibration device according to 3 or 4. 8. The medium introducing portion is constituted by a through hole penetrating between a front end portion of an ultrasonic wave emitting surface of the high power ultrasonic transducer and a rear end portion on the opposite side thereof. The ultrasonic vibration device according to claim 1, 2, 3, or 4. 9. The medium introduction section is constituted by a plurality of supply holes extending from the surface section of the high-power ultrasonic transducer to the ultrasonic radiation surface. 3. The ultrasonic vibration device according to 3 or 4. 10. The medium diffusion portion and the medium introduction portion are provided for each of the ultrasonic wave emitting surfaces that emit ultrasonic waves in mutually different directions.
7. The ultrasonic vibration device according to 7 or 9. 11. The medium diffusion part and the medium introduction part are provided for each of the ultrasonic wave emission surfaces that emit ultrasonic waves in mutually different directions.
An atomization device comprising the ultrasonic vibration device according to 7, 9, or 10 and the medium supply systems provided independently of each other.