JP6972887B2 - Ultrasonic sprayer - Google Patents

Description

The present invention relates to an ultrasonic spraying device capable of spraying a liquid by ultrasonic vibration.

As an ultrasonic spray device, a diaphragm having a large number of micropores, a spray unit having a piezoelectric element for vibrating the spray plate, and a liquid tank for storing the liquid to be sprayed are provided, and the liquid supply port of the liquid tank is provided. It has been proposed that a spray portion is attached and the vibrating plate is ultrasonically vibrated by a piezoelectric element so that the liquid in the liquid tank is sprayed through the micropores of the vibrating plate (for example, Patent Document 1, Patent Document 1, See 2.).

The ultrasonic spraying device described in Patent Document 1 is configured to atomize a liquid such as a cosmetic liquid, a beauty liquid, a chemical liquid, or water and spray it on the skin surface or the like to perform makeup or skin treatment. .. Further, the ultrasonic spraying device described in Patent Document 2 is configured to spray a raw material liquid such as a chemical liquid used for cosmetics and hygiene.

Japanese Unexamined Patent Publication No. 2014-108367 Japanese Unexamined Patent Publication No. 2007-29772

Since the ultrasonic spraying device described in Patent Documents 1 and 2 can spray a liquid without using an electric pump or the like, it has an advantage that the device can be configured to be compact and lightweight.

However, when the liquid in the liquid tank is separated from the spraying portion by tilting the ultrasonic spraying device or the like, the liquid cannot be sprayed, so that there is a problem that the degree of freedom for the spraying posture is greatly limited.

For this reason, for example, an ultrasonic spraying device configured to be able to spray a liquid downward and an ultrasonic spraying device configured to be able to spray a liquid on both a horizontal plane and a vertical surface have not been proposed yet. Is the actual situation.

Further, in the ultrasonic spraying apparatus described in Patent Documents 1 and 2, there is a problem that the liquid leaks from the fine holes of the diaphragm due to the hydraulic pressure of the liquid stored in the liquid tank when the diaphragm is not ultrasonically vibrated. be. In addition, even when the diaphragm is ultrasonically vibrated, if the liquid is sprayed downward from the liquid tank, a part of the liquid sprayed from the micropores collects and drops without being sprayed. there were.

For this reason, if a large liquid tank is used, the liquid pressure acting on the diaphragm will inevitably increase and liquid leakage will increase. The fact is that an ultrasonic spraying device configured to spray efficiently even in a large case has not yet been proposed.

An object of the present invention is that the structure can be made compact and lightweight, the degree of freedom for the spraying posture can be expanded, and liquid leakage from the fine holes of the diaphragm even when sprayed downward from the liquid tank. In addition, it is to provide an ultrasonic spraying device capable of efficiently spraying a large surface.

The present invention includes the following inventions.
(1) An ultrasonic spraying device capable of spraying a liquid by ultrasonic vibration, a main body portion, a handle portion provided on the main body portion, and an elongated nose extending from the main body portion and having a liquid supply path inside. A main body case having a portion, a liquid tank integrally or detachably provided in the main body portion, which communicates with the liquid supply path, and a liquid tank provided in the nose portion at intervals in the length direction of the nose portion. A plurality of storage chambers and a plurality of capable of adjusting the filling amount of liquid in the storage chamber by opening and closing a communication hole for communicating the liquid supply path and the storage chamber, which is provided corresponding to the plurality of storage chambers. The plurality of adjusting mechanisms, a vibrating plate provided with a plurality of micropores, and a piezoelectric element that ultrasonically vibrates the vibrating plate, and sprays the liquid in the storage chamber to the outside through the micropores. An ultrasonic spraying device characterized by having a plurality of spraying sections provided corresponding to a storage chamber.

When using this ultrasonic spray device, first hold the handle to adjust the posture of the device so that the liquid in the liquid tank flows to the liquid supply path side, and then transfer the liquid in the liquid tank to the liquid supply path. It is allowed to flow in, and a specified amount of liquid determined by the adjusting mechanism is filled from the liquid supply path into a plurality of storage chambers through communication holes and the adjusting mechanism. Next, the diaphragm is ultrasonically vibrated by a piezoelectric element, and the liquid in the storage chamber is atomized and sprayed from multiple micropores of the diaphragm, and the handle is held to operate the ultrasonic spray device. While spraying the liquid in a mist form from a plurality of spraying portions provided on the nose portion, the plurality of spraying portions are directed in a desired direction to spray the liquid on a desired spray object such as a curtain, a rug, a duvet, or clothing. It will be sprayed. Further, when the liquid in the storage chamber is emptied and the liquid is no longer sprayed, the attitude of the device is adjusted by holding the handle so that the liquid in the liquid tank flows to the liquid supply path side. In the same manner as above, the liquid in the liquid tank is filled in the storage chamber.

In this way, in this ultrasonic spraying device, the liquid to be sprayed is supplied without using an electric pump, and the liquid is sprayed by using ultrasonic vibration. Therefore, the device can be configured to be compact and lightweight, and the device can be configured. Can improve the quietness of. Further, since the liquid is atomized and sprayed from a plurality of spraying portions provided at intervals in the length direction of the nose portion, a wide area can be efficiently sprayed. Furthermore, an adjustment mechanism that can open and close the communication hole between the storage chamber and the liquid supply path is provided to supply the liquid from the large-capacity liquid tank to the small-capacity storage chamber in small portions, so that the liquid pressure acting on the spray unit It is possible to prevent liquid leakage from the fine holes of the vibrating plate not only when spraying is stopped but also when spraying, especially when spraying downward from the liquid tank. In addition, the liquid can be sprayed from the spraying part in any direction such as the upper side, the lower side, and the horizontal direction except the upper side in the vertical direction, so that the degree of freedom for the spraying posture of the device is greatly increased. Can be expanded.

(2) The ultrasonic spray device according to (1), wherein the spray portion is provided on the base end side of the nose portion in the storage chamber, and the communication hole is provided on the tip end side of the nose portion in the storage chamber. With this configuration, even when the nose portion is used with the tip end side facing upward, the liquid in the storage chamber can be sprayed until the liquid stored in the storage chamber is used up.

(3) The ultrasonic spraying device according to (1) or (2), wherein as the adjusting mechanism, a float capable of opening and closing the communication hole by buoyancy is provided in the storage chamber. The adjusting mechanism can be configured by a solenoid valve or the like, but if it is configured by a float as in the present invention, the manufacturing cost of the adjusting mechanism can be reduced.

(4) The ultrasonic spray device according to (3), wherein the float is formed in a spherical shape, and the float is movably held between the mouth edge of the communication hole and the bottom surface of the storage chamber. With such a configuration, the stability of the operation of the float can be improved.

(5) The ultrasonic spraying apparatus according to any one of (1) to (4) above, wherein the diaphragm is made of polyimide and the diameter of the micropores is set to 8 μm to 12 μm. With such a configuration, it is possible to effectively prevent liquid leakage from the micropores while ensuring a sufficient amount of liquid spray.

According to the ultrasonic spraying device according to the present invention, since the liquid is sprayed by using ultrasonic vibration and the electric pump is not used, the device can be configured to be compact and lightweight, and the quietness of the device can be improved. Further, since the liquid is atomized and sprayed from a plurality of spraying portions provided at intervals in the length direction of the nose portion, a wide area can be efficiently sprayed. Furthermore, an adjustment mechanism that can open and close the communication hole between the storage chamber and the liquid supply path is provided to supply the liquid from the large-capacity liquid tank to the small-capacity storage chamber in small portions, so that the liquid pressure acting on the spray unit It is possible to prevent liquid leakage from the fine holes of the vibrating plate not only when spraying is stopped but also when spraying, especially when spraying downward from the liquid tank. In addition, the liquid can be sprayed from the spraying part in any direction such as the upper side, the lower side, and the horizontal direction except the upper side in the vertical direction, so that the degree of freedom for the spraying posture of the device is greatly increased. Can be expanded.

FIG. 1 is a perspective view of an ultrasonic spraying device. FIG. 2 is a bottom view of the ultrasonic spraying device. FIG. 3 is a vertical cross-sectional view of the ultrasonic spraying device. FIG. 4 is a vertical cross-sectional view of the tip end side portion of the nose portion. FIG. 5 is a plan view of the nose portion with the upper case removed. FIG. 6 is a sectional view taken along line VI-VI of FIG. FIG. 7 is an exploded perspective view of the spray portion. FIG. 8 is an explanatory diagram when the liquid is filled in the storage chamber. FIG. 9 is an explanatory diagram when the liquid is sprayed with the nose portion horizontal. FIG. 10 is an explanatory diagram when the liquid is sprayed with the nose portion facing upward. FIG. 11 is an explanatory diagram when the liquid is sprayed with the nose portion facing downward.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 6, the ultrasonic spraying device 1 has a main body portion 11, a handle portion 12 provided on the main body portion 11, and an elongated nose extending from the main body portion 11 and having a liquid supply path 13 formed therein. A main body case 2 having a portion 14, a liquid tank 3 detachably attached to the main body portion 11, and a plurality of spray units 4 provided in the nose portion 14 at intervals in the length direction of the nose portion 14 are provided. The plurality of spray units 4 are adjusted so that the storage chamber 21 communicated with the liquid supply path 13 via the communication hole 23 and the communication hole 23 can be opened and closed to adjust the filling amount of the liquid W in the storage chamber 21. A mechanism 24 and a spraying unit 30 for spraying the liquid W in the storage chamber 21 to the outside are provided.

The liquid tank 3 is preferably provided detachably from the main body 11, but can also be provided integrally with the main body 11 so as not to be detachable. When the liquid tank 3 is configured to be removable, the liquid tank 3 can be disposable after the contents are used, or the liquid for refilling can be transferred to the liquid tank 3 so that the liquid tank 3 can be used repeatedly. You can also do it. Further, in the present embodiment, four spray units 4 are provided, but a plurality of other spray units 4 may be provided at intervals in the length direction of the nose portion 14. Further, in the spray unit 4, one spray unit 30 is provided for one storage chamber 21, but a plurality of spray units 30 may be provided for one storage chamber 21.

The liquid tank 3 can be filled with a liquid W of any component such as water, a solution to which an fragrance is added, a chemical solution having an antiallergic effect, a sterilizing / bactericidal effect, a deodorizing effect, and a beauty essence. .. The surface tension of the liquid W is not particularly limited, but it is preferable to use a liquid W having a surface tension of 26 mNm to 40 mNm from the viewpoint of preventing liquid leakage from the spray portion 30 as described later.

The nose portion 14 has an elongated upper cover 15 having a semicircular cross section in the direction orthogonal to the length direction, an elongated partition member 16 that closes the lower surface side of the upper cover 15, and an outer peripheral portion of the upper cover 15 and the partition member 16. It includes a packing 17 interposed between them, and an elongated flat plate-shaped lower surface plate 18 fixed to the upper cover 15 so as to cover the lower surface side of the upper cover 15 and the partition member 16.

A liquid supply path 13 is formed between the partition member 16 and the upper cover 15 along the length direction of the nose portion 14 over substantially the entire length of the nose portion 14. The partition member 16 is formed with four recesses 19 that are elongated along the length direction of the nose portion 14 and have an open upper surface side at intervals in the length direction of the nose portion 14, and the partition member 16 has recesses. The four lid members 20 that close the upper surface of the 19 are fixed, and the lid member 20 and the recesses 19 form four elongated storage chambers 21 in the length direction of the nose portion 14.

A connection pipe 22 for connecting the tip end portion of the liquid tank 3 and the base end portion of the liquid supply path 13 is provided in the main body portion 11, and as shown in FIG. 3, the handle portion 12 is arranged on the upper side and the nose portion is provided. With the 14 arranged substantially horizontally, the liquid tank 3 and the connecting pipe 22 are arranged so as to incline downward toward the tip side with respect to the horizontal direction, and the liquid W in the liquid tank 3 supplies the liquid through the connecting pipe 22. It is configured to fill the road 13.

A communication hole 23 that communicates the liquid supply path 13 and the storage chamber 21 is formed on the tip end side of the nose portion 14 of the lid member 20, and the storage chamber 21 has a spherical float 25 that can open and close the communication hole 23. An adjusting mechanism 24 is provided, and the adjusting mechanism 24 is configured to regulate the maximum capacity of the liquid W to be filled in the storage chamber 21. However, as the adjusting mechanism 24, instead of the float 25, an electromagnetic valve that opens and closes the communication hole 23 may be provided to control the opening and closing of the solenoid valve so that the maximum capacity of the liquid W in the storage chamber 21 is regulated. It is possible.

The opening diameter of the communication hole 23 on the storage chamber 21 side is set smaller than the diameter of the float 25 so that the communication hole 23 can be opened and closed by the float 25, and the end of the communication hole 23 on the storage chamber 21 side and the storage chamber 21 are set. The distance between the bottom surfaces of the float 25 is set smaller than the diameter of the float 25, and the float 25 is movably held between the mouth edge of the communication hole 23 and the bottom surface of the storage chamber 21 so that the communication hole 23 can be opened and closed. There is. However, the lid member 20 and / or the recess 19 may be provided with a guide portion that movably guides the float 25 in the opening / closing direction of the communication hole 23.

The specific gravity of the float 25 is set to be smaller than the specific gravity of the liquid W to be sprayed. For example, as shown in FIG. 8, the amount of liquid W in the storage chamber 21 is a specified value with the nose portion 14 arranged in the horizontal direction. In the following cases, the liquid W in the liquid supply path 13 flows into the storage chamber 21, but as shown in FIG. 9, the float 25 floats on the liquid W filled in the storage chamber 21 and is stored. When the chamber 21 is filled with the liquid W of the specified value, the float 25 is pressed against the opening edge of the communication hole 23 on the storage chamber 21 side by the buoyancy F, the communication hole 23 is closed by the float 25, and the liquid is supplied. The liquid W in the path 13 is configured to prevent further inflow into the storage chamber 21.

A liquid supply hole 26 is formed on the base side of the nose portion 14 in the bottom wall portion of the storage chamber 21, and a spray portion 30 is provided on the lower surface of the bottom wall portion so as to close the liquid supply hole 26. A spray hole 27 is formed in the storage chamber 21 so as to correspond to the spray unit 30, and the liquid W in the storage chamber 21 is atomized by the spray unit 30 and sprayed to the outside from the spray hole 27.

As shown in FIG. 7, the spray portion 30 has a base plate 32 having a through hole 31 and a diaphragm 34 having a plurality of fine holes 33 provided in a laminated manner on the base plate 32 so as to close the through hole 31. And a piezoelectric element 35 that ultrasonically vibrates the diaphragm 34 together with the base plate 32.

The diaphragm 34 can be made of a synthetic resin sheet material such as polyimide, polyethylene, polypropylene, or polyetheretherketone, or a thin metal plate such as stainless steel. The diameter of the micropores 33 formed in the diaphragm 34 is not particularly limited, but may be 8 μm to 12 μm in order to prevent liquid leakage from the micropores 33 while ensuring a sufficient amount of liquid spray. It may be 9 μm to 11 μm.

The piezoelectric element 35 has a well-known configuration in which a piezoelectric material made of a ceramic material such as lead zirconate (PZT), metaniobic acid (PN), barium titanate, or zinc oxide is arranged between electrode plates (not shown). be. In the present embodiment, the piezoelectric element 35 is formed in an annular shape and the insertion hole 36 is formed in the central portion, but other shapes may be adopted.

The base plate 32 is for retaining the shape of the diaphragm 34, and is made of a metal plate made of stainless steel or the like. However, when the diaphragm 34 is made of a metal plate such as stainless steel, the base plate 32 may be omitted.

A pair of light emitting diodes 37 are provided on the lower surface plate 18 of the nose portion 14 on the base side of the nose portion 14 with respect to each spray portion 30 so as to receive light from the light emitting diodes 37. By irradiating the mist sprayed from the spray unit 30, the spray state can be visually observed. However, the light emitting diode 37 can be omitted.

A secondary battery 40 such as a lithium ion battery is incorporated in the handle portion 12, a control unit 41 for controlling the piezoelectric element 35 and the light emitting diode 37 is provided in the main body portion 11, and the piezoelectric element 35 is the control unit 41. It is configured to vibrate with a preset amplitude and frequency by the AC voltage supplied from.

In order to prevent the liquid W in the storage chamber 21 from leaking as much as possible through the fine holes 33 of the spray portion 30 in a state where the piezoelectric element 35 is not vibrated, the hole diameter of the fine holes 33 of the diaphragm 34 is 8 to 12 μm. As shown in FIG. 10, the lower end position of the lowermost fine hole 33 of the liquid W in the storage chamber 21 through which the liquid W can flow when the posture of the ultrasonic spraying device 1 is changed. A liquid W having a surface tension of 26 to 40 mN / m can be adopted as the liquid W in which the maximum value H1 of the water level from the above is set to be 50 mm or less. With this configuration, it goes without saying that the piezoelectric element 35 is vibrated and the energization of the piezoelectric element 35 is temporarily stopped, and the ultrasonic spraying device 1 is applied to a stand (not shown). Is configured so that the liquid W in the storage chamber 21 does not leak from the spray portion 30 even when the nose portion 14 is set vertically and stored. The maximum value H1 is set to 30 mm or more so that the internal capacity of the storage chamber 21 can be sufficiently secured.

Further, considering that the ultrasonic spray device 1 is used in a house, an automobile, or the like, as shown in FIG. 3, the distance H2 from the spray unit 30 to the spray target is, for example, about 100 mm to 300 mm. Therefore, for example, the spray angle θ from the spray portion 30 is set to about 20 ° ± 3 ° so that the nozzle portion can be moved in the direction orthogonal to the length direction and the wide surface can be sprayed evenly at once. be able to. Further, the distance L between the adjacent spray portions 30 is such that the mist sprayed from the adjacent spray portions 30 partially overlaps in the vicinity of the spray target according to the assumed distance H2 to the spray target. For example, it can be set to 30 mm to 100 mm.

When using this ultrasonic spraying device 1, as shown in FIG. 8, first, the nose portion 14 is made horizontal, or the tip of the nose portion 14 is directed diagonally downward, so that the inside of the liquid tank 3 is used. The liquid W is allowed to flow into the liquid supply passage 13, and as shown in FIG. 9, a predetermined amount of the liquid W determined by the buoyancy of the float 25 is filled into the plurality of storage chambers 21 from the liquid supply passage 13 through the communication holes 23. Will be done. Next, the diaphragm 34 is ultrasonically vibrated by the piezoelectric element 35, and the liquid W in the storage chamber 21 is atomized and sprayed from the plurality of micropores 33 of the diaphragm 34, and the handle portion 12 is held. By operating the ultrasonic spray device 1, the plurality of spray portions 30 provided on the nose portion 14 are directed in a desired direction, and a desired spray target such as an indoor curtain, rug, duvet, clothing, automobile seat back, or seat cushion is to be sprayed. The liquid W will be sprayed on the object. At this time, as shown in FIG. 10, when the tip end side of the nose portion 14 is turned upward, the liquid W in the storage chamber 21 is sequentially sprayed, the liquid W in the storage chamber 21 is emptied, and the liquid W becomes empty. When the spray is no longer sprayed, the nose portion 14 is leveled or the tip of the nose portion 14 is directed diagonally downward to fill the storage chamber 21 with the liquid W in the liquid tank 3 in the same manner as described above. It will be. Further, as shown in FIG. 11, when the tip end side of the nose portion 14 is directed downward, the liquid W in the storage chamber 21 is sequentially sprayed, and the liquid W is sequentially replenished from the liquid tank 3 to the storage chamber 21. Will be.

As described above, in this ultrasonic spraying device 1, the liquid W to be sprayed is supplied without using an electric pump, and the liquid W is sprayed by using ultrasonic vibration, so that the device can be configured to be compact and lightweight. At the same time, the quietness of the device can be improved. Further, since the liquid W is atomized and sprayed from a plurality of spraying portions 30 provided at intervals in the length direction of the nose portion 14, the liquid W can be efficiently sprayed even if the target to be sprayed has a large area. Further, since an adjusting mechanism 24 capable of opening and closing the communication hole 23 between the storage chamber 21 and the liquid supply path 13 is provided to supply the liquid W from the large capacity liquid tank 3 to the small capacity storage chamber 21 in small portions. From the fine holes 33 of the vibrating plate 34 not only when the liquid pressure acting on the spraying portion 30 is reduced to stop the spraying but also when spraying, especially when spraying downward from the liquid tank 3. Can prevent liquid leakage. Further, the liquid W can be sprayed from the spraying unit 30 in any direction such as the upper side, the lower side, and the horizontal direction as long as it is not directly above the vertical direction. The degree of freedom can be greatly expanded.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it is needless to say that the configuration can be changed without departing from the gist of the present invention.

1: Ultrasonic spraying device 2: Main body case 3: Liquid tank 4: Spraying unit 11: Main body 12: Handle 13: Liquid supply path 14: Nose 15: Top cover 16: Partition member 17: Packing 18: Bottom plate 19: Recess 20: Lid member 21: Storage chamber 22: Connection pipe 23: Communication hole 24: Adjustment mechanism 25: Float 26: Liquid supply hole 27: Spray hole 30: Spray part 31: Through hole 32: Base plate 33: Fine Hole 34: Vibrating plate 35: Piezoelectric element 36: Insertion hole 37: Light emitting diode 40: Secondary battery 41: Control unit

Claims (3)

An ultrasonic spraying device that can spray liquid by ultrasonic vibration.
A main body case having a main body portion, a handle portion provided on the main body portion, and an elongated nose portion extending from the main body portion and having a liquid supply path inside.
A liquid tank that is integrally or detachably provided in the main body and communicates with the liquid supply path.
A plurality of storage chambers provided in the nose portion at intervals in the length direction of the nose portion, and
A plurality of adjusting mechanisms provided corresponding to the plurality of storage chambers, which can adjust the filling amount of the liquid in the storage chambers by opening and closing the communication holes for communicating the liquid supply path and the storage chambers.
It has a diaphragm provided with a plurality of micropores and a piezoelectric element that ultrasonically vibrates the diaphragm, and corresponds to the plurality of storage chambers in which the liquid in the storage chamber is sprayed to the outside through the micropores. With multiple spray parts provided in
Equipped with
The spray portion is provided on the base end side of the nose portion in the storage chamber.
The communication hole is provided on the tip end side of the nose portion in the storage chamber.
The ultrasonic spraying device is characterized in that, as the adjusting mechanism, a float capable of opening and closing the communication hole by buoyancy is provided in the storage chamber. The float was configured in a spherical shape, between the bottom surface of the rim and the reservoir chamber of the communication hole, the ultrasonic atomizing device according to claim 1, wherein holding the float floating freely. The ultrasonic spraying device according to claim 1 or 2, wherein the diaphragm is made of polyimide and the diameter of the micropores is set to 8 μm to 12 μm.

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