JPH0768204A - Supersonic spray device - Google Patents

Abstract

PURPOSE:To provide a spray device which is designed to be operative safely and allows the recycling of a container and a spray block by installing the spray block with a piezoelectric element kept in contact with a passage member in a housing, and consequently, vibrating the passage member as a supersonic transducer. CONSTITUTION:If a supersonic wave generated by a piezoelectric element 29 which comes into contact with a passage member 21 is released from the basic end of the passage member 21 as a transducer, a convection indicated by an arrow A mark generates in a liquid 9 of a liquid-filled bath 3A and the liquid 9 at the basic end part of a passage 27 of the transducer (passage member 21) tends to be pushed upward. Then, the liquid at the passage 27 receives a force applied in an ascending direction as indicted by an arrow B mark due to a peripheral supersonic surfacial wave, as the transmissivity of the supersonic wave through the liquid 9 is superior to that through the air. Thus, this synergic effect causes the liquid 9 in the passage 27 to be heaved upward. Further, the liquid 9 heaved upward is dissipated in fine mist by the radiant pressure of the supersonic wave on the upper end surface of the supersonic transducer (passage member 21).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spraying device for atomizing and discharging a spray liquid in a container.
The present invention relates to a spraying device including an ultrasonic transducer that generates a pump function by applying ultrasonic energy to a spray liquid in a container, and sucks and atomizes the spray liquid by the pump function.

[0002]

2. Description of the Related Art Conventionally, as spraying devices, those used as spray containers for insecticides, hair styling agents, fragrances, etc. are known.

In this type of spraying device, a container is formed of metal in a cylindrical shape having a bottom, and a spraying block is fixed to the opening of the container by caulking and integrated, and a spraying nozzle is built in the spraying block. Has been done.

In the container, in addition to the spray liquid,
It is known that liquefied gas such as CFC gas or LPG is pressurized and filled, and the spray liquid is ejected from the injection nozzle by the high pressure of the liquefied gas by operating the injection nozzle of the container.

[0005]

In this type of conventional spraying apparatus, since a high-pressure liquefied gas is enclosed and used, the container and the spraying block are integrally fixed by caulking or the like to maintain the high pressure. The spraying device must be structured so that when the spray liquid runs out in the container, the entire spraying device must be discarded. Therefore, even if the container and the spray block having the injection nozzle can be used, they cannot be reused, and there is a disadvantage that resources are thrown away.

Further, since the container is filled with liquefied gas, if the liquefied gas is, for example, LPG having high flammability,
There was a risk of combustion and explosion, and in particular, there was a risk of combustion and explosion due to residual gas after disposal.

Further, when the liquefied gas in the container is freon gas, there is an environmental problem that the ozone layer is destroyed by the remaining freon gas after the container is discarded.

Therefore, the present invention eliminates the need for the use of high-pressure liquefied gas, does not cause the danger of combustion or explosion of the container, and does not destroy the ozone layer, and is safe and can reuse the container and the spray block. Is intended to provide.

[0009]

A spraying device of the present invention is a spraying device for atomizing and discharging a spray liquid in a container, and a container having an opening at the top and filling the spray liquid in the opening. A spray block that is removably attached to the opening of the container, has a passage therein, and sucks the spray liquid through the passage, atomizes it, and discharges it.
The spray block includes a passage member that forms the passage in the housing, and a piezoelectric element that is in contact with the passage member. Vibration of the piezoelectric element causes the passage member to function as an ultrasonic transducer. It is a device.

Further, preferably, the connection structure of the spray block and the opening of the container is configured to be a connection structure which is connected by screwing.

Further, preferably, a filter for adjusting the particle size of the spray to be discharged may be provided at the tip of the passage provided in the ultrasonic transducer.

[0012] Preferably, in the spray block,
It is preferable to have a grip for gripping.

Preferably, the container is provided with a negative pressure preventing structure for eliminating a negative pressure generated in the container during use.

Preferably, the negative pressure prevention structure is
It is preferable to provide an opening provided on the peripheral surface of the container and an opening / closing lid that closes the opening when not in use.

Preferably, the opening is provided with a sealing member that allows only the outside air to pass therethrough.

[0016] Further, it is preferable that the sealing member is formed of a cloth which is knitted with a nylon material and whose surface is coated.

Preferably, a cap is detachably attached to the opening of the container.

Preferably, the passage member is formed of two members, and the piezoelectric element is mounted between the passage members.

[0019]

In such an ultrasonic spraying device, the cap of the container is removed and the spraying block is attached to the opening of the container.

In this case, in use, when a switch provided in the spray block is turned on, a DC power supply is applied to the ultrasonic transducer, and the spray liquid in the container is transferred from the base end to the tip of the passage of the ultrasonic transducer. Is sucked up, and the sucked spray liquid is atomized by the radiation pressure of the ultrasonic waves at the tip of the ultrasonic transducer, and the fine pores of the filter adjust the ratio of the desired particle size and the spraying speed to spray the air into the atmosphere. Is released to.

Therefore, the ultrasonic energy of the ultrasonic transducer sucks up the atomized liquid in the container, atomizes it, and discharges it, so that it is not necessary to use a high-pressure liquefied gas as in the prior art. Therefore, it is not necessary to form the container and the spray block in an integrated structure, and the container can be configured to be attachable to and detachable from the spray block.

As a result, even when the spray liquid runs out in the container, the container can be reused by removing the container from the spray block and injecting the spray liquid into the container, and it has been conventionally disposed of. The spray block can be reused.

Further, since the use of liquefied gas is unnecessary,
Since there is no danger of burning or explosion and there is no need to separately use CFC gas, problems such as ozone layer destruction can be solved.

Further, since the spray block has a structure which can be attached to and detached from the container, the spray block can be applied to a plurality of containers, and the practical range can be increased.

Further, when the container is provided with the negative pressure prevention structure, the negative pressure state in the sealed container is canceled when the ultrasonic spraying device is used, so that the spray liquid in the container is removed by the ultrasonic transducer. Can be sucked up reliably without load, the ultrasonic spraying device can be operated continuously for a long time, the spray flight distance and uniform flow rate can be secured, and the spraying state can be stabilized. Becomes

Further, in the case where the container is provided with a sealing member which allows only the outside air to pass through at the opening of the negative pressure prevention structure, the spray liquid in the container does not leak to the outside when the ultrasonic atomizer is used. Can be made to flow into the container.

Further, when the passage member is formed of two members and the piezoelectric element is mounted between the passage members, formation of the ultrasonic transducer is facilitated.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an ultrasonic spraying device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical cross-sectional view showing an ultrasonic spraying device of this embodiment. In FIG. 1, 1 is an ultrasonic spraying device and 3
Is a container, 11 is a spray block, 21 is a passage 2 described later.
7 shows a passage member forming 7.

As shown in FIG. 1, the ultrasonic spraying device 1 of this embodiment has a container 3 in which a spray liquid 9 is stored, and a container 3
The spray block 11 is attached to the opening 5 and the ultrasonic transducer (the passage member 21) built in the spray block 11.

As shown in FIG. 2, the container 3 is formed of aluminum or synthetic resin into a bottomed cylindrical shape. Further, an opening 5 is provided on the upper portion of the container 3, and a male screw portion 5a is provided on the peripheral surface of the opening 5. Before use, a cap 7 is screwed onto the male screw portion 5a. Inside, for example, a spray liquid 9 such as an insecticide, a hair styling agent, and a fragrance is contained.

As shown in FIG. 1, the spray block 11 is composed of a first housing 11A and a second housing 11B, and a second housing 11B is attached to the tip of the first housing 11A. An ultrasonic transducer (passage member 21) is provided inside the second housing 11B.

Further, the first housing 11A and the second housing 11B are formed in a cylindrical shape having the same diameter as that of the container 3, the tip side of the second housing 11B is formed into a conical taper, and the tip surface has a predetermined shape. An opening 13 having a size is provided.

Further, on the inner periphery of the base end portion of the first housing 11A, a female screw portion 11a which is screwed into the male screw portion 5a of the opening portion 5 of the container 3 is formed, and the opening of the container 3 with the cap 7 removed. The part 5 is mounted.

An O-ring 15 is attached to the inside of the first housing 11A at a position where the tip end surface of the opening 5 of the container 3 at the time of attachment is located, and the base of the first housing 11A is further attached. A seal packing 17 is attached to the end face of the end portion, and the O-ring 15 and the seal packing 1 are attached.
7 has a structure capable of preventing the spray liquid 9 from leaking from the opening 5 of the container 3 mounted in the first housing 11A.

Although the spray block 11 and the container 3 are connected to each other by screwing the male screw portion 5a and the female screw portion 11a together, the structure is not limited to this, and if it is removable, for example, It may be a snap structure or another structure.

The ultrasonic transducer (passage member 2
1) is the first transducer 23 as shown in FIG.
And a second transducer 25 attached to the tip end side of the first transducer 23, arranged on the central axes of the first housing 11A and the second housing 11B, and on the central axes of these. A passage 27 for sucking up the spray liquid 9 in the container 3 is formed.

Further, as shown in FIG. 3, a male screw portion 25a is provided at the base end portion of the second transducer 25, and a female screw portion 23a screwed to the male screw portion 25a is provided at the tip end portion of the first transducer 23. Is provided,
The first transducer 23 and the second transducer 25 are joined by the male screw portion 25a and the female screw portion 23a.

Further, between the first transducer 23 and the second transducer 25, as shown in FIG. 3, a piezoelectric element 29, a ceramic element 31, a + side terminal 3 are provided.
3, -side terminals 35 are arranged so as to be superposed from above,
The + side terminal 33 and the-side terminal 35 are connected to a DC power source (not shown).

Further, at the tip of the second transducer 25, a plate-shaped expanded portion 25A having an outer diameter larger than that of the tip opening 13 of the second housing 11B is formed.
A concave portion 25B is provided on the tip surface of the expanded diameter portion 25A,
A filter 37 having a large number of fine holes of 5 μm to 10 μm formed therein is attached to the recess 25B, and a cap 39 for holding the filter 37 from the outside is attached to the expanded diameter portion 25A.

Further, each of the first transducer 23 and the second transducer 25 has an O-ring 41,
Support seats 41A and 43A that respectively support 43 are provided, and the first transducer 23 and the second transducer 25 inserted in the spray block 11 are the O-rings 4 provided on the respective support seats 41A and 43A.
It is supported by 1, 43.

Here, the principle of operation of the ultrasonic transducer (passage member 21) will be described with reference to FIG.

In FIG. 4, 9 is a liquid, 3A is a liquid filling tank,
45 is a stator attached to the opening of the liquid filling tank 3A, 21 is a passage member that constitutes an ultrasonic transducer, 27 is a passage, 29 is a piezoelectric element, 33 is a + electrode, 35 is a-electrode, 4
7 is a lock nut for fixing the piezoelectric element 29, 41, 43
Is an O-ring, and 37 is a filter.

When an alternating voltage (rectangular wave voltage, sine wave voltage) is applied to the piezoelectric element 29, the piezoelectric element 29 is distorted and expands and contracts according to the change in voltage. Although this movement is only a few microns, by designing the transducer as a vibrating body so as to resonate with the natural frequency of the piezoelectric element 29, expansion and contraction of the piezoelectric element 29 by an alternating voltage of the same cycle as the resonance frequency. The motion can be expanded and transmitted to each tip of the transducer, and ultrasonic waves are generated as compression waves amplified from each tip surface.

Therefore, by configuring as shown in FIG. 4, the liquid 9 in the tank 3A can be sucked up and atomized.

That is, when ultrasonic waves are emitted from the base end of the transducer (passage member 21), the arrow A in FIG.
The convection indicated by is generated in the liquid 9 in the tank 3A, and the liquid 9 in the proximal end portion of the passage 27 of the transducer (passage member 21) tends to be pushed upward. In this case, liquid 9 rather than air
Since the ultrasonic wave has better transmissivity, the liquid 9 in the passage portion receives a force in the upward direction as indicated by an arrow B in FIG. As a result, the liquid 9 in the passage 27 is lifted upward.

Then, the liquid 9 lifted up in the passage 27 is discharged as a fine mist by the radiation pressure of the ultrasonic waves on the upper end surface of the ultrasonic transducer (passage member 21).

Further, the filter 37 provided on the tip end surface of the ultrasonic transducer (passage member 21) forms a large proportion of fine particles, and has a load effect of increasing the ejection speed of the atomized liquid. .

Next, the operation of the ultrasonic spraying device of this embodiment will be described.

First, to attach the container 3 containing the spray liquid 9 to the spray block 11, the cap 7 is removed from the container 3 shown in FIG. 2, and the male screw portion 5a of the opening 5 of the container 3 is removed.
Is screwed onto the female screw portion 11 a of the spray block 11 to mount the container 3 on the spray block 11. In this case, the space between the container 3 and the spray block 11 is sealed by the O-ring 15 and the seal packing 17, whereby the leakage of the spray liquid 9 is reliably prevented.

Next, at the time of use, when the switch provided in the spray block 11 is turned on, a DC power source is applied to the piezoelectric element 29, and the ceramic vibrator 31 ultrasonically vibrates in the thickness direction. Propagates in the direction from the first transducer 23 to the second transducer 25, and as described in the operating principle, the spray liquid 9 in the container 3 is discharged from the base end of the ultrasonic transducer (passage member 21) through the passage 27. It is sucked up to the tip of the ultrasonic transducer (passage member 21).

Further, the suctioned spray liquid 9 is atomized by the radiation pressure of the ultrasonic wave at the tip of the second transducer 25, and the fine pores of the filter 37 cause the ratio of the desired flow type fog and the spray. It is released into the atmosphere at a controlled rate.

Therefore, in the ultrasonic atomizing apparatus of this embodiment, an ultrasonic transducer is used, and the ultrasonic energy of this ultrasonic transducer sucks up the atomizing liquid in the container, atomizes it, and discharges it. The use of high-pressure liquefied gas unlike the conventional case is unnecessary, and the container and the spray block need not be integrated by caulking or the like, and the container can be attached to and detached from the spray block.

As a result, when the spray liquid is exhausted in the container, the container can be reused by removing the container from the spray block and injecting the spray liquid into the container. The spray block can be reused.

Further, since no liquefied gas is used, there is no danger of combustion or explosion, and in particular, there is no need to use CFC gas, so that the problem of depleting the ozone layer can be solved.

Furthermore, since the spray block is detachably attached to the container, the spray block can be applied to a plurality of containers, and there is an advantage that the spray block can be shared.

Further, another embodiment of the present invention will be described with reference to FIG.

In this embodiment, a grip is provided so that the grip can be easily used in actual use.

That is, the ultrasonic spraying device 1 of this embodiment
As shown in FIG. 5, the grip 5 is attached to the spray block 11.
1 is integrally formed, and the grip 51 has the spray block 11
With respect to the right angle. Further, a DC power source (dry battery) is housed in the grip 51, and a switch 53 connected to this power source is provided on the front surface of the grip 51.

When the ultrasonic spraying device 1 is used, the grip 51 is held in the hand and the tip of the spraying block 11 is tilted substantially downward.

In this case, since the spray block 11 is used while being tilted downward, the opening 55 of the container 3 is tilted downward during use, and the spray liquid 9 in the container 3 causes the ultrasonic transducer (passage member 21). The base end of the will always be immersed in use.

As a result, the action of sucking the spray liquid by the ultrasonic transducer is ensured, and the spray liquid can be used until the end even when the amount of the spray liquid in the container becomes small.

Next, another embodiment of the present invention will be described with reference to the drawings. In this embodiment, the description of the same structure as that of the above embodiment will be omitted.

In this embodiment, when the ultrasonic spraying device 1 is used, the sealed container 3 is in a negative pressure state.
The spray liquid 9 in the ultrasonic transducer (passage member 2
1) causes a large load when sucking up and
The negative pressure prevention structure 63 for preventing the negative pressure in the container 3 from being generated may not be continuously sprayed for a long time.
It was installed in.

That is, in the ultrasonic spraying device 1 of the present embodiment, the negative pressure prevention structure 63 has a structure as shown in FIGS.
An opening 55 is provided on the bottom surface of the container 3, and a sleeve 57 is integrally formed on the bottom surface so as to project from the peripheral portion of the opening 55 toward the outside of the container 3.

In the present embodiment, the shape of the opening and the sleeve 57 is a circular hole, and accordingly, the sleeve 57 is also cylindrical.

A sealing member 59 is attached to the opening end of the sleeve 57, and a cap (opening / closing lid) 61 is detachably attached to the sleeve 57 from the outside of the sealing member 59. ing.

As shown in FIG. 7, the sealing member 59 is made of a nylon fiber and has a net-like shape with a special coating on its surface. When the cap 61 is removed from the sleeve 57, The sealing member 59 prevents the spray liquid 9 from seeping in and causing no leakage, and allows only air to flow in.

When the ultrasonic spraying device 1 is not used, the cap 61 is attached to the sleeve 57, and when the ultrasonic spraying device 1 is used, as shown in FIG.
When the cap 61 is removed from the sleeve 57 of
Air flows into the container 3 from the stitches of the sealing member 59 through the opening 55, and thereby negative pressure is prevented from being generated in the container 3.

The nylon material, which is the material of the sealing member 59, has a function of allowing air to pass but not water, and the special coating has a function of repelling water or the solvent of the spray liquid 9.

Therefore, when the ultrasonic spraying device is used, the negative pressure state in the closed container is eliminated, so that the ultrasonic transducer can surely suck up the spray liquid in the container without a load. As a result, the ultrasonic spraying device can be continuously operated for a long time, a flight distance of the spray and a uniform flow rate can be secured, and the spraying state can be stabilized.

It should be noted that the sealing member 59 is not limited to the sealing member having the above-mentioned structure, and any member having a similar function can be applied.

Further, the negative pressure preventing structure is not limited to the bottom surface of the container, but may be provided at any position on the outer peripheral surface of the container.

Further, the cap 61 for opening and closing the opening 55 is not limited to the cap as long as it has an opening and closing function even with other structures.

[0075]

As described above, according to the present invention,
With the ultrasonic energy of the ultrasonic transducer, the spray liquid in the container is sucked up, atomized and released, so there is no need to use high-pressure liquefied gas as in the past.
It is not necessary to integrally form the container and the spray block by caulking or the like, and the container can be configured to be attachable to and detachable from the spray block.

As a result, even when the spray liquid runs out in the container, the container can be reused by removing the container from the spray block and injecting the spray liquid into the container, and it has been conventionally disposed of. The spray block can be reused.

Since the use of liquefied gas is unnecessary,
There is no danger of burning or explosion, and problems such as ozone layer destruction can be solved.

Further, since the spray block has a structure which can be attached to and detached from the container, the spray block can be applied to a plurality of containers, and there is an advantage that the practical range can be increased.

Further, when the container is provided with a negative pressure prevention structure, the negative pressure state in the sealed container is canceled when the ultrasonic spraying device is used, so that the spray liquid in the container is removed by the ultrasonic transducer. It is possible to suck up air without load, and it is possible to operate the ultrasonic atomizer continuously for a long time, and it is possible to secure a flight distance and a uniform flow rate of the atomization and stabilize the atomization state. Become.

Further, when a sealing member that allows only the outside air to pass through is provided in the opening of the negative pressure preventing structure of the container, the spray liquid in the container does not leak to the outside when the ultrasonic spraying device is used. It becomes possible to let outside air flow into the container.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an ultrasonic spraying device according to an embodiment of the present invention.

FIG. 2 is a half-crushed vertical sectional view showing a container in which the spray liquid is stored, which is half-crushed.

FIG. 3 is an exploded perspective view showing an ultrasonic transducer.

FIG. 4 is a vertical cross-sectional view illustrating the operation principle of the ultrasonic transducer.

FIG. 5 is a perspective view showing an ultrasonic spraying device in use according to another embodiment of the present invention.

FIG. 6 is a semi-crushed longitudinal sectional view showing a container in a semi-crushed state according to another embodiment of the present invention.

FIG. 7 is a plan view showing a negative pressure prevention structure.

FIG. 8 is a vertical cross-sectional view of a main part showing an opening and a sealing member at the bottom of the container.

FIG. 9 is a vertical cross-sectional view showing the ultrasonic spraying device in use.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ultrasonic spraying device 3 Container 5 Container opening 5a Male screw part 11 Spraying block 11a Female screw part 21 Ultrasonic transducer which becomes a passage member 27 Passage 37 Filter 51 Grip 55 Opening 59 Sealing member 61 Opening / closing lid 63 Negative pressure prevention structure

Claims (10)

[Claims] 1. A spraying device for atomizing and discharging a spray liquid in a container, the container having an opening at an upper portion thereof, the container filled with the spray liquid in the opening, and detachably attached to the opening of the container. And a spray block that has a passage therein and sucks the spray liquid through the passage, atomizes and discharges the spray liquid, and the spray block includes a passage member that forms the passage in a housing, and An ultrasonic spraying device, comprising: a piezoelectric element in contact with a passage member, wherein the passage member is configured as an ultrasonic transducer by vibrating the piezoelectric element. 2. The ultrasonic spraying device according to claim 1, wherein the connection structure between the spraying block and the opening of the container is connected by screwing. 3. The ultrasonic spraying device according to claim 1, wherein a filter for adjusting a particle diameter of the spray to be discharged is provided at a tip end portion of a passage provided in the ultrasonic transducer. 4. The ultrasonic spraying device according to claim 1, wherein the spraying block is provided with a grip for gripping. 5. The ultrasonic spraying device according to claim 1, wherein the container is provided with a prevention structure for eliminating negative pressure generated in the container during use. 6. The negative pressure prevention structure comprises an opening provided on the peripheral surface of the container, and an opening / closing lid that closes the opening when not in use. The ultrasonic spraying device described. 7. The ultrasonic spraying device according to claim 6, wherein the opening is provided with a sealing member that allows only outside air to pass therethrough. 8. The ultrasonic spraying device according to claim 7, wherein the sealing member is formed of a cloth which is knitted from a nylon material and whose surface is coated. 9. A spraying device for atomizing and discharging a spray liquid in a container, the container having an opening at the top, and the container filled with the spray liquid in the opening, and detachably attached to the opening of the container. And a spray block that is detachably attached to the opening of the container, has a passage therein, and sucks the spray liquid through the passage and atomizes and sprays the spray liquid. An ultrasonic wave, comprising: a passage member that forms the passage in the housing; and a piezoelectric element that is in contact with the passage member, and the passage member is configured as an ultrasonic transducer by vibration of the piezoelectric element. Spraying equipment. 10. The ultrasonic spraying device according to claim 1, wherein the passage member is formed of two members, and the piezoelectric element is mounted between the passage members.