JPH0970562A - Ultrasonic atomizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic atomizing device hardly restricted to the atomizing direction and the atomizing position. SOLUTION: A liq. in a tank 1 is sucked with an intake side vibrating shaft 2 and the liq. is discharged from a discharge side vibrating shaft 5 through a flexible liq. circulating pipe 7, so the liq. A can be dispersed hardly restricted to the atomizing direction and the atomizing position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic atomizing device for atomizing a relatively small amount of liquid such as water or various liquid agents.

[0002]

2. Description of the Related Art Conventionally, as an ultrasonic atomizing device of this type, as disclosed in, for example, Japanese Utility Model Laid-Open No. 2-70760, a vibrating shaft having a through hole extending vertically and a vibrating shaft. It is known that a vibrator is attached to the vibrator, and a high-frequency signal is applied to the vibrator to vibrate the vibrating shaft so that liquid is sucked in from the lower end of the vibrating shaft and discharged in a mist form from the upper end. ing.

[0003]

However, in the conventional ultrasonic atomizing device, the vibrating shaft is directly contacted with the liquid and sucked up from below, so that the spraying direction is only above and the spraying position is above. However, there is a problem in that it is not possible to widely support a wide variety of uses because it is restricted by the surroundings of a tank or the like that stores a liquid.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an ultrasonic atomizer which is not restricted by the spray direction and spray position.

[0005]

In order to achieve the above-mentioned object, the present invention provides a vibrating body which vibrates when a high frequency signal is applied, and a vibrating body which has a through hole axially penetrating therethrough. An ultrasonic atomizing device having a shaft, and vibrating the vibrating shaft by a vibrator so that liquid contained in a predetermined container is sucked into the through hole from one end of the vibrating shaft and is discharged from the other end. In at least one vibrating shaft that ejects liquid from one end, a vibrator that vibrates the vibrating shaft, a liquid flow pipe whose one end is connected to the other end of the vibrating shaft, and liquid is sucked from the other end of the liquid flow pipe. And inhaling means for As a result, when the vibrating shaft vibrates by the vibrator and the liquid is sucked into the liquid flow pipe by the suction means,
The liquid sent into the liquid flow pipe is sucked into the through hole of the vibrating shaft and discharged in a mist state from the vibrating shaft. In this case, the vibrating shaft is remotely connected to the vibrating shaft via the liquid flow pipe, and therefore, by setting the vibrating shaft at any position or in any direction, the spray direction and the spray position are restricted. Liquid can be sprayed without.

According to a second aspect of the present invention, there is provided a vibrator that generates vibration by applying a high frequency signal, and a vibration shaft having a through hole that penetrates in the axial direction. The vibrator vibrates the vibration shaft. In an ultrasonic atomizing device that sucks liquid from one end of the vibration shaft into the through hole and discharges it from the other end, a vibration that sucks the liquid from one end and a vibration that vibrates the suction vibration shaft A child, at least one discharge-side vibration shaft that discharges liquid from one end, a vibrator that vibrates the discharge-side vibration shaft, and a liquid flow pipe that connects the suction-side vibration shaft and the discharge-side vibration shaft to each other. . Accordingly, when each vibrating shaft vibrates by each vibrator, liquid is sucked into the through hole of the suction side vibrating shaft and sent out to the liquid flow pipe, and the liquid sent into the liquid flowing pipe penetrates the discharge side vibrating shaft. It is sucked into the hole and discharged in the form of mist from the discharge-side vibration shaft. In this case, since the discharge-side vibration shaft is remotely connected to the suction-side vibration shaft via the liquid flow pipe, by setting the discharge-side vibration shaft at any position or in any direction, The liquid can be sprayed without being restricted in position.

According to a third aspect of the present invention, in the ultrasonic atomizing device according to the first or second aspect, the liquid flow pipe is formed of a flexible member. As a result, in addition to the action of claim 1 or 2, the discharge-side vibration shaft is connected to the suction-side vibration shaft through the flexible liquid flow pipe, so that the discharge-side vibration shaft can be freely moved to any position. , Or in any orientation.

According to a fourth aspect of the present invention, in the ultrasonic atomizing device according to the first, second or third aspect, there is provided blower means for blowing air in the liquid discharge direction of the discharge-side vibrating shaft.
Thereby, in addition to the effect of the first, second or third aspect, it becomes possible to positively spray the liquid discharged from the discharge side vibration shaft in a desired direction by the blown air.

[0009]

1 to 3 show one embodiment of the present invention, FIG. 1 is a partial sectional side view of an ultrasonic atomizer, and FIG. 2 is an enlarged sectional view of a liquid suction portion. 3 is an enlarged cross-sectional view of a liquid ejection portion.

This ultrasonic atomizer comprises a tank 1 containing an arbitrary liquid A, a suction side vibrating shaft 2 for sucking the liquid A from one end, a vibrator 3 for vibrating the suction side vibrating shaft 2, and a suction side. The reflection container 4 that covers the liquid suction portion of the side vibration shaft 2, the discharge side vibration shaft 5 that discharges the liquid from one end, and the discharge side vibration shaft 5
A vibrator 6 for vibrating the vibrators, a liquid flow pipe 7 for connecting the other ends of the vibration shafts 2, 5 to each other, and a drive circuit 8 for driving the vibrators 3, 6.

The tank 1 has an upper surface opened, and contains water or an arbitrary liquid agent as the liquid A therein.

The suction-side vibrating shaft 2 has a through hole 2a penetrating in the axial direction, and one end of the vibrating shaft 2 is brought into contact with the liquid A in the tank 1 with the one side facing downward. One end of the suction side vibration shaft 2 is shown in FIG.
As shown in Fig. 2, the flange shape is enlarged and the through hole 2a is formed.
The opening 2b is formed so as to expand in a taper shape toward the tip.

The vibrator 3 is composed of a pair of piezoelectric elements opposed to each other in the axial direction, and is fixed between a pair of mounting plates 3a mounted on the outer circumference of the suction side vibration shaft 2.

The reflection container 4 is a cylinder whose bottom surface is a hemispherical surface, and is made of metal, ceramics or the like. A mounting flange 4a is provided at the upper end of the reflection container 4, and the lower end side of the suction side vibration shaft 2 is inserted through a hole 4b provided at the center of the flange 4a. A plurality of holes 4c are provided on the side surface of the reflection container 4, and the liquid A in the tank 1 flows into the reflection container 4 through the holes 4c.

The ejection-side vibrating shaft 5 has a through hole 5a penetrating in the axial direction, and one end side thereof is opened as a liquid ejection port. One end of the discharge-side vibration shaft 5 is enlarged in a flange shape as shown in FIG. 3, and the opening 5b of the through hole 5a is formed wide in the radial direction. An orifice filter 5c having a large number of extremely small holes is housed in the opening 5b, and the orifice filter 5c is held by a ring-shaped cover 5d fitted to the tip of the vibrating shaft 5.

The vibrator 6 is similar to the vibrator 3 on the liquid suction side.
It is composed of a pair of piezoelectric elements opposed to each other in the axial direction, and is fixed between a pair of fixed plates 6 a attached to the outer circumference of the ejection-side vibration shaft 5.

The liquid flow pipe 7 is made of a flexible member such as a rubber hose, and its both ends are connected to the other ends of the respective vibrating shafts 2, 5.

The drive circuit 8 comprises a voltage controlled oscillator circuit,
Each vibrator 3, 6 and the power source 8a are connected to each vibrator 3,
A high frequency voltage is applied to 6.

In the ultrasonic atomizing device configured as described above, when a high frequency voltage is applied to each of the vibrators 3 and 6 by the drive circuit 8, the vibrators 3 and 6 generate ultrasonic vibrations, The vibration is magnified as longitudinal vibration at each vibration axis 2 and 5. As a result, convection in the direction in which the liquid A is sucked up from the lower end is generated in the through hole 2a of the suction side vibration shaft 2, and the liquid A in the tank 1 is sucked into the through hole 2a and the liquid flow pipe 7
Sent to. Further, convection in the direction of ejecting the liquid A from the tip is generated on the discharge-side vibration shaft 5, and the suction-side vibration shaft 2
The liquid A fed from the inside into the liquid flow pipe 7 is sucked into the through hole 5 a of the discharge-side vibrating shaft 5 and discharged from the tip.
At that time, the liquid A ejected from the ejection-side vibration shaft 5 is atomized by ultrasonic vibration and is dispersed as fine particles to the outside. In this case, the discharge-side vibration shaft 5 is a flexible liquid flow pipe 7
Since it is remotely connected to the suction-side vibration shaft 2 via the, the discharge-side vibration shaft 5 can be moved to an arbitrary position or set in an arbitrary direction so that the spray direction and the spray position are not restricted. Liquid A can be sprinkled. Also,
In the suction side vibration shaft 2, the liquid A is efficiently sucked by the tapered opening 2b of the through hole 2a, and the periphery of the vibration shaft 2 is covered with the reflection container 4, so that the shape of the tank 1 is changed. A constant amount of atomization can always be obtained without being affected. Further, in the discharge side vibration shaft 5,
When the atomized liquid A passes through the orifice filter 5c, the discharged particles are made more fine and uniform.

As described above, according to the ultrasonic atomizing apparatus of this embodiment, the liquid A in the tank 1 is sucked by the suction side vibrating shaft 2, and the liquid A is sucked through the flexible liquid flow pipe 7. Since the discharge side vibrating shaft 5 is used for discharging, the liquid A can be sprayed without being restricted by the spraying direction and the spraying position, and is widely used for various purposes such as spraying of disinfectant liquid and spraying of agricultural chemicals. Can respond.

FIG. 4 shows an example provided with a plurality of discharge-side vibrating shafts 5, which is used, for example, in the case of spraying an insect repellent under the floor of a house. That is, each of the discharge-side vibration shafts 5 is held upward by a holder 9 buried in the soil under the floor,
The suction side vibrating shaft 2 via the liquid flow pipe 10 branched into a plurality of parts.
It is connected to the. In this case, if the positions of the discharge-side vibration shafts 5 are fixed, the liquid flow pipe 10 can be formed of a non-flexible member such as a steel pipe.

5 and 6 show an example in which a blowing means is provided on the discharge-side vibrating shaft 5. That is, the discharge-side vibration shaft 5 is housed in a cylindrical case body 11 having both ends opened, and the liquid flow pipe 7 penetrates the side surface of the case body 11 and is connected to the discharge-side vibration shaft 5. The discharge-side vibrating shaft 5 has its tip facing one end of the case body 11, and a blower 12 is provided on the other end side of the case body 11. Therefore, since the air sucked from the other end side of the case body 11 by the blower 12 is blown out from one end of the case body 11, the liquid A discharged from the discharge side vibrating shaft 5 is positively moved in a desired direction by the blown air. The liquid A can be sprayed over a long distance or can be partially concentrated and sprayed.

In the above embodiment, the liquid A is sucked by the suction side vibration shaft 2 and the vibrator 3 thereof.
As shown in FIG. 7, the electromagnetic pump 13 may be used as the suction means.

[0024]

As described above, according to the ultrasonic atomizing device of the first and second aspects, the vibrating shaft for ejecting the liquid can be installed at any position or in any direction.
The liquid can be sprayed without being restricted by the spraying direction and the spraying position, and a wide variety of uses can be widely supported.

According to the ultrasonic atomizing device of the third aspect, in addition to the effect of the first or second aspect, the vibrating shaft for ejecting the liquid can be freely moved to any position or set in any direction. The liquid can be sprayed to any place at any time.

According to the ultrasonic atomizing device of the fourth aspect, in addition to the effect of the first, second or third aspect, the liquid discharged from the vibrating shaft is positively sprayed in the desired direction by the blown air. So that you can spread the liquid far,
Alternatively, it is advantageous when the spray is partially concentrated.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of an ultrasonic atomizing device showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a liquid suction portion.

FIG. 3 is an enlarged cross-sectional view of a liquid ejection portion.

FIG. 4 is a schematic configuration diagram of an ultrasonic atomizing device including a plurality of ejection-side vibration axes.

FIG. 5 is a schematic configuration diagram of an ultrasonic atomizing device including a blowing unit.

FIG. 6 is a side sectional view showing a blowing structure on the liquid ejection side.

FIG. 7 is a schematic configuration diagram showing another example of an inhaler.

[Explanation of symbols]

2 ... suction side vibration shaft, 2a ... through hole, 3 ... vibrator, 5 ... discharge side vibration shaft, 5a ... through hole, 6 ... vibrator, 7 ... liquid flow pipe, 10 ... liquid flow pipe, 12 ... blower, 13 ... Electromagnetic pump, A ... Liquid.

Claims (4)

[Claims] 1. A vibrating shaft having a through-hole penetrating in the axial direction, the vibrating shaft vibrating when a high-frequency signal is applied to the vibrating shaft. In an ultrasonic atomizer in which the contained liquid is sucked into the through hole from one end of the vibrating shaft and discharged from the other end, at least one vibrating shaft ejecting the liquid from one end and the vibrating shaft are vibrated. An ultrasonic atomization device comprising: a vibrator, a liquid flow pipe having one end connected to the other end of the vibration shaft, and suction means for sucking liquid from the other end of the liquid flow pipe. 2. A vibrating shaft for liquid by vibrating the vibrating shaft by vibrating the vibrating shaft, the vibrating shaft having a through hole penetrating in the axial direction. In an ultrasonic atomizing device that sucks into the through hole from one end and discharges from the other end, a suction side vibration shaft that sucks liquid from one end, a vibrator that vibrates the suction side vibration shaft, and one end A supercharger comprising at least one ejection-side vibrating shaft that ejects liquid, a vibrator that vibrates the ejection-side vibrating shaft, and a liquid flow pipe that connects the suction-side vibrating shaft and the ejection-side vibrating shaft to each other. Sonic atomizer. 3. The ultrasonic atomizer according to claim 1, wherein the liquid flow pipe is formed of a flexible member. 4. The ultrasonic atomizing device according to claim 1, further comprising a blowing unit that blows air in a liquid ejection direction of the ejection-side vibration shaft.