JP3007108B2 - Ultrasonic atomizer - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an ultrasonic atomizing device useful for a disinfecting device or the like which atomizes a disinfecting liquid and sprays it on a finger.

(Prior Art) Conventionally, an ultrasonic atomizing apparatus of this type shown in FIG. 5 is known. (For example, JP-A-61-71860) In the figure, reference numeral 1 denotes a Langevin type vibrator that generates vibration by applying a high frequency signal,
An oscillating circuit 2 for causing the vibrator 1 to generate a constant vibration is connected to the vibrator 1 via a conductor. Also,
The oscillation circuit 2 is driven by a voltage supplied from a power supply 3 such as a home AC power supply.

Reference numeral 4 denotes a columnar horn which expands the amplitude of the vibration generated by the vibrator 1 and outputs the vibration from the end. A large-diameter vibration input end face 4a is provided at one end, and a small-diameter vibration output end face 4b is provided at the other end. Each is formed. This horn 4 has its vibration input end face 4a
Is connected to the vibrator 1 and the vibration transmitted from the vibrator 1 is output from the vibration output end face 4b with its amplitude enlarged. Further, a flat attachment member 5 for attaching the apparatus to a main body of a disinfection apparatus or the like is fixed to the horn 4 at a step portion having a different diameter between both ends thereof.

Reference numeral 6 denotes a disinfecting solution discharge nozzle composed of a small-diameter tube, one end of which is connected to a tank (not shown) in which the disinfecting solution is stored, and the discharge port is disposed so as to face the lower end of the horn 4. .

In the conventional ultrasonic atomizer configured as described above, when a voltage is supplied from the power supply 3 to the oscillation circuit 2,
A predetermined high-frequency signal is applied from the oscillation circuit 2 to the vibrator 1, and the vibration generated by the vibrator 1 is amplified by the horn 4 and output from the vibration output end face 4b. And
The disinfecting liquid discharged from the nozzle 6 travels along the side face near the lower end of the horn 4 and contacts the vibration output end face 4b, and at the same time, is atomized and sprayed on fingers and the like.

(Problems to be Solved by the Invention) However, in the conventional ultrasonic atomizer, the disinfectant is discharged to the side near the lower end of the horn 4, and the side is transmitted to the vibration output end 4b. Therefore, it is difficult to atomize the disinfectant uniformly from the entire vibration output end face 4b, so that the spray fog is partially concentrated and cannot be spread evenly on the entire finger, and harmful bacteria and pathogens attached to the finger are prevented. It had the disadvantage that it could not be destroyed sufficiently. Further, in order to solve such a defect, a plurality of nozzles are provided to discharge the disinfecting liquid from multiple directions, or the discharge amount of the disinfecting liquid is increased to increase the horn 4.
In some cases, the liquid is discharged from below the lower end toward the vibration output end face 4b. However, in the former case, the discharge amount of each nozzle is unbalanced due to clogging in the nozzle tube due to long-term use, and in the latter case,
As the flow rate increases, the disinfectant which cannot be atomized completely causes a problem such as dripping, which results in the same drawbacks as described above.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an ultrasonic mist capable of always forming an ideal spray form by uniformly supplying a liquid to the entire vibration output end face of a horn. To provide a chemical conversion device.

(Means for Solving the Problems) In order to achieve the above object, according to the present invention, in claim (1), a vibrator that generates vibration by applying a high-frequency signal, an upper end connected to the vibrator, and A columnar horn that expands the amplitude of the vibration generated by the vibrator and outputs from the lower end, and an ultrasonic atomizing device that atomizes the liquid supplied near the lower end of the horn by the output vibration of the horn, A liquid reservoir holder is provided near the lower end of the horn to store the supply liquid around the horn, and a uniform gap is provided between the lower end of the liquid reservoir holder and the outer periphery of the horn. Are provided.

According to a second aspect of the present invention, in the ultrasonic atomizing apparatus according to the first aspect, at least one drainage hole is provided on a side surface of the liquid reservoir holder at a predetermined height from the gap. ing.

In claim (3), claim (1) or (2)
In the ultrasonic atomizer described above, the liquid holder is fixed to a portion corresponding to a node of vibration of a horn.

(Operation) According to the ultrasonic atomizing device of claim (1), after the liquid supplied into the liquid reservoir is accumulated around the horn,
It flows out uniformly from the gap between the outer periphery of the horn and the reservoir,
It is supplied to the vibration output part at the lower end of the horn.

According to the ultrasonic atomizing device of the second aspect, the plurality of projections provided at the gap portion of the liquid reservoir holder sandwich the outer peripheral surface of the horn, so that the gap with the outer periphery of the horn is made uniform. Will be kept.

Further, according to the ultrasonic atomizing device of claim (3), when the liquid level excessively supplied into the liquid reservoir holder reaches a liquid discharge hole provided on the side surface of the liquid reservoir holder, the liquid is discharged. The liquid is discharged from the liquid holder to the outside of the liquid holder.

Further, according to the ultrasonic atomizing device of the fourth aspect, the liquid reservoir holder does not vibrate because the liquid reservoir holder is fixed to a portion corresponding to a node of vibration of the horn.

(Embodiment) FIGS. 1 to 3 show an embodiment of the present invention.
The same components as those in the conventional example are denoted by the same reference numerals.

That is, 1 is a vibrator, 2 is an oscillation circuit, 3 is a power supply, 5 is a mounting member, and 6 is a nozzle.

Reference numeral 10 denotes a horn that expands the amplitude of the vibration generated by the vibrator 1 and outputs the vibration from the lower end thereof. The horn is composed of three cylinders having three different outer diameters whose diameter gradually decreases from the upper end to the lower end. The horn 10 has a large-diameter oscillator 1 at its upper end.
In addition, a mounting member 5 is fixedly attached to a stepped portion having a different diameter near the upper end, and four vibration output surfaces 10a each having a square pyramid-shaped tip at the lower end of the small diameter. Are formed.

Reference numeral 11 denotes a liquid reservoir holder for storing a disinfecting solution on the outer periphery near the lower end of the horn 10, and has a substantially cylindrical shape having a bottom surface through which the horn 10 can be inserted. This liquid reservoir holder 11 has an annular projection 11a provided on the upper part of the inner surface thereof fitted and fixed in an annular groove 10b provided on the lower part of the middle diameter part of the horn 10, and this fixed part is Corresponds to the horn 10 vibration node. The bottom surface of the liquid reservoir holder 11 has a slope that becomes lower toward the center, and has an insertion hole 11b through which the lower end of the horn 10 is inserted. The insertion hole 11b has an inner diameter slightly larger than the outer diameter of the lower end of the horn 10, and a uniform gap is formed between the outer periphery of the horn 10 and the insertion hole 11b. The inner surface of the insertion hole 11b is provided with four protrusions 11c at equal intervals in the circumferential direction.
The side of the horn 10 is pinched by. Further, on the side surface of the liquid reservoir holder 11, at a predetermined height position from the insertion hole 11b,
A drain hole 11d for discharging the excessively supplied disinfectant is provided, and the nozzle 6 is inserted through the drain hole 11d.

Here, the operation of the ultrasonic atomizer will be described.

First, when a voltage is applied from the power supply 3 to the oscillation circuit 2,
A predetermined high-frequency signal is applied from the oscillation circuit 2 to the vibrator 1, and the amplitude of the vibration generated by the vibrator 1 is expanded by the horn 10 and output from each vibration output surface 10 a at the lower end.
At this time, nodes and antinodes of vibration alternately appear in the horn 10 in the axial direction, and each vibration output surface 10a corresponds to the antinode with the largest amplitude.

When the disinfectant is discharged from the nozzle 6 in this vibration state,
The disinfecting solution is supplied into the reservoir 11 and accumulates around the horn 10, and the disinfectant is uniformly distributed throughout the gap between the insertion hole 11 b and the horn 10 due to the action of capillary action. As a result, the disinfecting liquid gradually flowing out of the gap is uniformly supplied to each vibration output surface 10a, and is atomized at the same time as touching each vibration output surface 10a. Further, since each of the vibration output surfaces 10a faces in a different direction, the atomized disinfectant is diffused in all directions.

As described above, according to the ultrasonic atomizing apparatus of the present embodiment, the supplied disinfectant is stored around the horn 10 near the lower end of the horn 10 and flows out from the uniform gap between the horn 10 and the disinfectant. The provision of the reservoir holder 11 allows the disinfectant to be applied to each vibration output surface.
Since it can be uniformly supplied to 10a, it is possible to always form an ideal spray form, and it is possible to surely kill or attenuate bacteria and pathogens attached to fingers. Further, since the horn 10 through which the liquid reservoir holder 11 is inserted is sandwiched by the four protrusions 11c provided in the insertion hole 11b, a uniform gap can always be maintained between the insertion hole 11b and the horn 10. . Further, since the drainage hole 11d is provided on the side surface of the liquid reservoir holder 11, even when a large amount of the disinfectant is supplied into the liquid reservoir holder 11 due to malfunction of the discharge amount control of the nozzle 6, excessive disinfectant is removed. The liquid can be discharged from the drain hole 11d, and the filling of the disinfectant can be reliably prevented. Further, since the liquid reservoir holder 11 is fixed to a portion corresponding to a node of vibration of the horn 10, the liquid reservoir holder 11 does not vibrate and the vibration of the horn is not hindered.

FIG. 4 shows another embodiment of the present invention. In the figure, reference numeral 20 denotes a horn, in which a portion having a larger outer diameter than a lower end thereof is formed in a portion included in the liquid reservoir holder, and other configurations are the same as those of the horn 10 of the above-described embodiment. It is.

Reference numeral 21 denotes a liquid reservoir holder composed of upper and lower members. The lower portion of the upper surface of the upper member 21a and the upper portion of the inner surface of the lower member 21b are screwed together. Further, an insertion hole 21c for inserting the horn 20 is opened sufficiently larger than in the above-described embodiment.

Also, a liquid reservoir holder 21 is provided at the step of the different diameter of the horn 20.
A slope 20a parallel to the inner surface of the bottom surface of the lower member 21b is formed, and the gap A between the inner surface of the bottom surface of the lower member 21b and the inclined surface 20a of the horn 20 can be changed by screwing and retreating by rotation of the lower member 21b. It has become.

As described above, according to the ultrasonic atomizing device of the present embodiment, the upper and lower members 21a and 21
b, the gap A between the inner surface of the bottom surface of the lower member 21b and the slope 20a of the horn 20 can be changed by advancing and retreating by the rotation of the lower member 21b. Even if the amount is adjusted or a different disinfectant is used, it is possible to quickly respond to changes in the spraying state due to differences in viscosity, etc. Become.

In the above embodiment, the lower end of the horn is formed in the shape of a quadrangular pyramid. However, the lower end of the horn may be of a planar shape perpendicular to the vibration direction of the horn as in the conventional example.

(Effects of the Invention) As described above, according to the ultrasonic atomizing device of claim (1), the supplied liquid is stored around the horn near the lower end of the horn, and the liquid is uniformly distributed between the horn and the horn. The liquid can be supplied uniformly to the lower end surface of the horn by providing a liquid reservoir holder that flows out of a narrow gap, so that an ideal spray form can always be formed, and bacteria and pathogens adhered to fingers can be reliably removed. Can die or diminish.

According to the ultrasonic atomizing device of the present invention, since a plurality of protrusions for sandwiching the outer peripheral surface of the horn to be inserted are provided in the gap portion of the liquid reservoir holder, the gap is always uniform. Can be kept.

According to the ultrasonic atomizing device of claim (3), at least one drain hole is provided on the side surface of the liquid reservoir holder at a predetermined height distance from the gap portion. Even when a large amount of liquid is supplied into the liquid storage holder due to a malfunction of the discharge amount control or the like, excess liquid can be discharged from the drain hole, and the liquid can be reliably prevented from being filled.

According to the ultrasonic atomizing device of claim (4), since the liquid reservoir holder is fixed to the portion corresponding to the node of the vibration of the horn, the liquid reservoir holder does not vibrate and the vibration of the horn is reduced. There is no hindrance.

[Brief description of the drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a partially enlarged sectional view of an ultrasonic atomizer, FIG. 2 is a top sectional view of FIG. 1, and FIG. Fig. 4 is a schematic side view of an ultrasonic atomizer, Fig. 4 is a partially enlarged view of an ultrasonic atomizer showing another embodiment, and Fig. 5 is a schematic side view of an ultrasonic atomizer showing a conventional example. FIG. In the figure, 1 ... vibrator, 10, 20 ... horn, 11, 21 ... liquid reservoir holder, 11c ... protrusion, 11d ... drain hole, A ... gap.

Claims (3)

(57) [Claims] 1. A vibrator that generates vibration by applying a high-frequency signal, and a columnar horn having an upper end connected to the vibrator and expanding the amplitude of the vibration generated by the vibrator to output from the lower end. An ultrasonic atomizer for atomizing liquid supplied near the lower end of the horn by output vibration of the horn, comprising: a liquid reservoir holder for storing a supplied liquid around the horn near the lower end of the horn; An ultrasonic atomizer, wherein a uniform gap is provided between the lower end of the storage holder and the outer periphery of the horn, and a plurality of protrusions for holding the outer peripheral surface of the horn are provided in a part of the gap. 2. The ultrasonic atomizing device according to claim 1, wherein at least one drain hole is provided at a predetermined height distance from the gap on a side surface of the liquid reservoir holder. . 3. An ultrasonic atomizer according to claim 1, wherein said liquid reservoir holder is fixed to a portion corresponding to a node of vibration of a horn.