JP2550938Y2 - Ultrasonic atomizer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an ultrasonic atomizer used for a hand disinfection device or the like.

[0002]

2. Description of the Related Art Although not well known in the art, the applicant has proposed a device relating to this type of ultrasonic atomizer (Japanese Utility Model Application No. 2-113407).

[0003] This ultrasonic atomizing apparatus includes a vibrator that generates vibration by applying a high-frequency signal, and a vibration generated by the vibrator whose base end is connected to the vibrator, the amplitude of which is increased and output from the distal end. And a mounting plate fixed to the base end of the horn so that the liquid supplied to the tip of the horn is atomized by the output vibration of the horn. I have. A liquid reservoir holder for storing the supplied liquid around the horn is attached to the front end of the horn, and the liquid reservoir holder and the horn are formed by annular concave and convex portions which are fitted to each other. It is assembled. The front end side of the horn penetrates the lower end of the liquid reservoir holder, and outlets are provided on both sides of the horn penetrating portion, so that the supply liquid gradually flows out from each outlet. . In addition, since each outlet is provided on both sides of the horn, the outflowing liquid is intensively atomized from the position corresponding to each outlet at the tip of the horn, and is directed toward the spread of the spray form. Sex is occurring.

[0004]

When the horn vibrates, antinodes and nodes of the vibration appear alternately in the axial direction of the horn. Therefore, in the above-mentioned conventional example, the tip of the horn is made to correspond to this antinode, and vibration of the maximum amplitude is output from the tip. In addition, when an external force is applied to the horn, the vibration is disturbed. Therefore, the mounting plate and the liquid reservoir holder are respectively attached to the portions corresponding to the nodes of the vibration having the least influence on the horn. However, even though the influence is small, it is not preferable to individually attach the mounting plate and the liquid reservoir holder to the horn because contact points between the horn and the outside are increased. Is enlarged, and the reservoir holder may resonate with the horn. For this reason,
However, there has been a problem that the output vibration of the motor is easily disturbed and abnormal noise is easily generated. Further, the liquid reservoir holder and the horn are assembled by annular concave and convex portions, but are not firmly connected to each other in order to reduce external force to the horn. For this reason,
There is also a problem that the liquid reservoir holder rotates in the circumferential direction of the horn due to vibration of the horn, causing a positional shift, and the spreading direction of the spraying form is shifted.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an ultrasonic atomizing apparatus capable of reliably preventing resonance and displacement of a reservoir holder. It is in.

[0006]

In order to achieve the above object, according to the present invention, there is provided a vibrator for generating vibration by applying a high frequency signal, and a vibrator having a base end connected to the vibrator. A horn that expands the amplitude of the vibration generated in step 2 and outputs it from the tip, a mounting part for fixing the horn to the outside, and a liquid reservoir holder that stores the liquid supplied to the horn around the horn tip side, In an ultrasonic atomizing device for discharging a liquid from the outlet provided in the liquid reservoir holder to the tip of the horn and atomizing the liquid by output vibration of the horn, the liquid reservoir holder and the mounting portion are integrated, Mounting part is horn
So that it corresponds to the vibration node on the proximal side of
I am .

According to a second aspect of the present invention, a plurality of outlets of the liquid reservoir holder are provided in the circumferential direction of the horn, and a plurality of outlets are provided outside the liquid reservoir holder from the vicinity of each outlet to the front end side of the horn. A plurality of protruding portions extending toward are provided.

According to a third aspect of the present invention, a vent is provided on a side surface of the liquid reservoir holder to communicate with the inside and outside of the liquid reservoir holder.

[0009]

According to the ultrasonic atomizing device of the first aspect, since the reservoir holder and the mounting portion are provided integrally, the homing device is provided.
Only one place is required for assembling with the holder, and there is no displacement of the reservoir holder. Also, since the amplitude of the vibration is small on the base end side of the horn, the liquid reservoir holder attached to the portion corresponding to the vibration node on the base end side does not resonate with the vibration of the horn. .

Further, according to the ultrasonic atomizing device of the second aspect, while having the function of the first aspect, the liquid flowing out from each outlet is formed by a capillary phenomenon between each projection and the horn. Or it is guided around each projection by the action of surface tension,
It is atomized intensively from the position corresponding to each projection.

According to the ultrasonic atomizing device of the third aspect, the function of the first or second aspect is provided, and the vent hole is provided on the side surface of the liquid reservoir holder. The inside and outside are at the same pressure.

[0012]

1 to 7 show an embodiment of the present invention, which shows an ultrasonic atomizer used for a hand disinfecting apparatus.

In FIG. 1, reference numeral 1 denotes a Langevin type vibrator which generates a vibration by applying a high frequency signal. The vibrator 1 has an oscillation circuit for causing the vibrator 1 to generate a constant vibration. 2 are connected via a conducting wire. The oscillating circuit 2 is driven by power supplied from a power supply 3 such as a home AC power supply.

Reference numeral 4 denotes a horn for expanding the amplitude of the vibration generated by the vibrator 1 and outputting the vibration from the distal end thereof, the base end of which is connected to the vibrator 1. The horn 4 is made of aluminum or the like, and its base end is formed to have the same diameter as the vibrator 1. The lower part of the horn 4 has a smaller diameter than the base end, and the lower part of the small diameter part has a smaller diameter. It is formed to have a large diameter and a small diameter below it to the tip. An annular groove 4a formed in the circumferential direction of the horn 4 and a flange formed below the annular groove 4a are formed at the boundary between the base end of the horn 4 and the small-diameter portion therebelow. Parts 4b are respectively provided, and a flange part 4b
Corresponds to the vibration node of the horn 4. On the other hand, horn 4
Of the horn 4 is formed in a substantially conical shape.
make c. The vibration output portion 4c is composed of two conical surfaces having different apex angles, and the apex angle of the conical surface on the tip side is larger than that of the other conical surface. Note that the apex angle of each cone surface may be arbitrarily determined according to a desired spraying form. However, when used for finger spraying, the cone surface on the tip side is about 60 ° to 120 °, and the other cone is It is appropriate to set the plane to about 10 ° to 80 °. Further, if the horn 4 is corroded by a liquid agent or the like, there is a possibility that the horn 4 may be cracked from the corroded portion by vibrating stress and may be damaged. .

Numeral 6 is a liquid storage holder for storing a disinfecting solution on the outer periphery of the horn 4. The horn storage portion 6a covers the horn 4 from the base end to the distal end, and the horn storage portion 6a. And mounting portions 6b extending in the horizontal direction from both sides of the upper end. E
The housing 6a is formed in a substantially cylindrical shape, and the bottom surface thereof forms a slope that becomes lower toward the center, and the front end side of the horn 4 penetrates the center of the bottom surface. The through-hole supports the outer periphery of the horn 4 by an opening edge thereof, and an outlet 6c of a disinfecting solution cut in a concave shape is formed on both sides of the horn 4 at the opening edge. Further, outside the horn accommodating portion 6a, there are provided projections 6d extending from the vicinity of each of the outlets 6c toward the front end of the horn 4, respectively. Have a slight gap between them. Further, a vent hole 6e is provided on a side surface of the horn accommodating portion 6a so that the inside and the outside of the horn accommodating portion 6a have the same pressure. A step 6 corresponding to the flange 4b of the horn 4 is provided on the upper edge of the horn housing 6a.
f is formed, and the lower surface side of the flange portion 4b is fitted to the step portion 6f. On the other hand, the horn housing 6
A screw mounting portion 6g is provided at two positions near a, and a screw 7 is screwed to each screw mounting portion 6g from above. A washer 8 is mounted on each screw 7, and one end of each washer 8 is inserted into the annular groove 4 a of the horn 4. As a result, the flange 4b is connected to one end of each washer 8 and the step 6
and the liquid reservoir holder 6 is assembled to the horn 4. However, the flange portion 4b is not pressed by each washer 8 and is assembled with a little play. Also, screw holes 6h for fixing the mounting portion 6b to the outside are formed at both ends of the mounting portion 6b.

Reference numeral 9 denotes a pump for supplying a disinfecting solution to the horn 4. The tip of the discharge pipe 9a penetrates the side surface of the reservoir holder 6, and the suction pipe 9b is connected to the disinfecting solution storage tank 10.
It is connected to the.

In the ultrasonic atomizing apparatus configured as described above, when power 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 child 1 is amplified by the horn 4 and output from the vibration output section 4c at the tip.
At this time, nodes and antinodes of vibration appear alternately in the axial direction of the horn 4 on the horn 4, and the vibration output section 4c corresponds to the antinode with the largest amplitude.

When the disinfecting liquid is supplied from the discharge pipe 9a into the liquid reservoir holder 6 in this vibration state, the disinfecting liquid is supplied to the horn 4
Once, and gradually flows out from each outlet 6c.
Further, the disinfecting liquid that has flowed out reaches the vibration output unit 4c, and is atomized at the same time that it comes into contact with the vibration output unit 4c. At this time, the disinfectant flowing out of each outlet 6c is guided between the projection 6d and the horn 4 by the action of the capillary action, and each outlet 6a is located on both sides of the horn 4. Therefore, the disinfectant is supplied to the vibration output unit 4c intensively at a location corresponding to each outlet 6c. As a result, directivity is generated in the direction in which the atomized disinfectant A is scattered, and a spraying form having a lateral spread as shown in FIGS. 6 and 7 is formed.

As described above, according to the ultrasonic atomizing apparatus of the present embodiment, the horn accommodating portion 6a of the liquid reservoir holder 6 and the mounting portion 6
Since the horn 4 and the horn 4 are integrally formed, only the flange 4b is required to be attached to the horn 4 so that the influence of an external force on the horn 4 can be minimized and the liquid reservoir holder 6 is displaced. Therefore, the spreading direction of the spray form can be kept constant. The flange portion 4b corresponds to a vibration node on the base end side of the horn 4 . That is,
The holder 6 and the mounting portion 6b are integrated, and the mounting portion 6b is
Corresponding to the node of the proximal vibration where the vibration amplitude of
The liquid reservoir holder 6
Resonance can be reliably prevented. Furthermore, since the horn accommodating portion 6a and the mounting portion 6b of the liquid reservoir holder 6 are integrally formed, the number of parts can be reduced, and the cost and the number of assembling steps can be reduced.

The outlets 6c provided on the bottom surface of the reservoir holder 6 are located on both sides of the horn 4, respectively, and the protrusions 6d provided near the outlet 6c allow the outlets 6c to be provided.
Since the disinfectant is supplied intensively to the position corresponding to each outlet 6c of the vibration output unit 4c of the housing 4, directivity is generated in the direction in which the atomized disinfectant is scattered, and the spray spread horizontally. A form can be formed. Therefore, when disinfecting a finger, both hands are arranged side by side, so that the entire finger can be disinfected uniformly.

Further, since the inside and outside of the liquid reservoir holder 6 can be kept at the same pressure by the vent 6e provided on the side surface of the liquid reservoir holder 6, the disinfecting liquid can flow out smoothly from the outlet 6c. At the same time, even if the disinfectant is excessively supplied to the reservoir 6 due to a failure of the pump 9 or the like, the disinfectant can be discharged from the vent 6e.

[0022]

As described above, according to the ultrasonic atomizing device of the first aspect, the influence of the external force on the horn can be minimized, and the resonance of the liquid reservoir holder can be ensured. Can be prevented. Further, since the liquid reservoir holder does not shift, the spreading direction of the spraying form can be kept constant.

Further, according to the ultrasonic atomizing device of the second aspect, since it is possible to have an arbitrary directivity in the direction in which the liquid is scattered, it is possible to form a spray form which spreads in a predetermined direction.

According to the ultrasonic atomizing device of the third aspect, since the inside and outside of the liquid storage holder can be maintained at the same pressure, the liquid can smoothly flow out from the outlet.

[0025]

[Brief description of the drawings]

[0026]

FIG. 1 is a side view of a main part of an ultrasonic atomizing device showing an embodiment of the present invention.

[0027]

FIG. 2 is a schematic configuration diagram of an ultrasonic atomizing device showing one embodiment of the present invention.

[0028]

FIG. 3 is an exploded perspective view of a horn and a liquid reservoir holder.

[0029]

FIG. 4 is a partial sectional view of a liquid reservoir holder.

[0030]

FIG. 5 is a sectional view taken along line AA of FIG. 4;

[0031]

FIG. 6 is a side view showing a disinfectant spraying mode.

[0032]

FIG. 7 is a sectional view taken along line BB of FIG. 6;

[0033]

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... vibrator, 4 ... horn, 6 ... liquid holder, 6a ... horn
Housing part, 6b mounting part, 6c outlet, 6d protrusion,
6e ... vent.

Claims (3)

(57) [Scope of request for utility model registration] 1. A vibrator that generates vibration by applying a high-frequency signal, a horn having a base end connected to the vibrator, and a vibration generated by the vibrator, the amplitude of which is increased and the horn is output from a distal end. And a liquid storage holder for storing the liquid supplied to the horn around the front end of the horn.The liquid flows out from the outlet provided in the liquid storage holder to the front end of the horn, In an ultrasonic atomizer for atomizing a liquid by the output vibration of a horn, the liquid reservoir holder and a mounting portion are integrated, and the mounting portion is
An ultrasonic atomizing device, wherein the ultrasonic atomizing device is attached to a portion corresponding to a vibration node on the base end side of the device. 2. A plurality of outlets of the reservoir holder are provided in the circumferential direction of the horn, and a plurality of outlets extending from the vicinity of each outlet toward the front end of the horn outside the reservoir holder. The ultrasonic atomizer according to claim 1, wherein a projection is provided. 3. The ultrasonic atomizing device according to claim 1, wherein a ventilation port communicating with the inside and outside of the liquid reservoir holder is provided on a side surface of the liquid reservoir holder.