JP7015669B2 - Ultrasonic sprayer - Google Patents

Description

The present invention relates to an ultrasonic spraying device including a spraying unit that sprays a liquid by ultrasonic vibration.

Conventionally, as this kind of ultrasonic spraying device, a storage chamber for storing liquid, a diaphragm having a plurality of micropores, and a vibrator having a liquid passage hole of a predetermined size in the central portion are provided, and the vibration is provided. An ultrasonic spraying device including a spraying portion for spraying the liquid in the storage chamber to the outside through the micropores by ultrasonically vibrating the diaphragm with a child is provided (see, for example, Patent Document 1). .. Such a conventional ultrasonic spraying device can spray intensively, but is not suitable for objects that need to be sprayed over a wide area such as beds, sofas, curtains, automobiles, and clothing. So, the usability was bad.

Japanese Unexamined Patent Publication No. 2009-274022

Therefore, what the present invention seeks to solve in view of the above-mentioned situation is to spray even an object that needs to be sprayed over a wide range, such as a bed, a sofa, a curtain, an automobile, or clothing. The point is to provide an ultrasonic spraying device that is suitable and easy to use.

The present invention includes the following inventions.
(1) An ultrasonic spraying device including a spraying unit that sprays a liquid by ultrasonic vibration, in which two or more spraying units are arranged at predetermined intervals, and the spraying angle of each spraying unit is 15. An ultrasonic spraying device set at ~ 25 °, more preferably 17-23 °.

(2) The ultrasonic spraying device according to (1), wherein the predetermined distance between the spraying portions is set to 30 to 150 mm.

(3) Two or more storage chambers for storing liquids are provided corresponding to the spraying portions, and the liquid in each storage chamber is sprayed to the outside by the corresponding spraying portions (1) or (2). Sonic spray device.

According to the ultrasonic spraying apparatus according to the present invention as described above, since two or more spraying portions are arranged at predetermined intervals, the spraying portions are sprayed in a direction intersecting the directions in which the spraying portions are arranged. By moving it, it is possible to efficiently spray a wide range of objects such as beds, sofas, curtains, automobiles, clothing, etc. that need to be sprayed over a wide range, improving usability and further. By setting the spray angle of the spray portion to 15 to 25 °, it is possible to efficiently spray the liquid uniformly and evenly over the entire area even when spraying over a wide spray range.

In particular, by setting the predetermined distance between the spraying portions to 30 to 150 mm, it is possible to spray more uniformly, evenly and efficiently.

Further, if two or more storage chambers for storing liquids are provided corresponding to the spraying portions and the liquid in each storage chamber is sprayed to the outside by the corresponding spraying portions, the respective storage chambers are separated from each other. The liquid is stably supplied to each spraying portion, the amount of spraying from each spraying portion can be stably and uniformized, and the spray can be more evenly and efficiently sprayed over a wide range.

Perspective view of the ultrasonic spray device. Bottom view of the ultrasonic spray device. Vertical cross-sectional view of the ultrasonic spraying device. A vertical sectional view of the tip side portion of the nose portion. Top view of the nose with the upper case removed. FIG. 4 is a sectional view taken along line VI-VI of FIG. An exploded perspective view of the spray part. Explanatory drawing when filling a liquid in a storage chamber. Explanatory drawing when spraying liquid with the nose part horizontal. Explanatory drawing when the liquid is sprayed with the nose part facing upward. Explanatory drawing when spraying liquid with the nose part facing downward.

Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIGS. 1 to 6, the ultrasonic spray device 1 according to the embodiment of the present invention has a main body portion 11, a handle portion 12 provided on the main body portion 11, and a liquid inside extending from the main body portion 11. A main body case 2 having an elongated nose portion 14 forming a supply path 13, a liquid tank 3 detachably attached to the main body portion 11, and a liquid tank 3 provided in the nose portion 14 at intervals in the length direction of the nose portion 14. It is provided with a plurality of spray units 4.

The plurality of spray units 4 open and close the storage chamber 21 communicated with the liquid supply path 13 via the communication hole 23 and the communication hole 23 to adjust the filling amount of the liquid W in the storage chamber 21. A mechanism 24 and a spray unit 30 for spraying the liquid W in the storage chamber 21 to the outside are provided, whereby two or more spray units 30 are linearly spaced at predetermined intervals in the ultrasonic spray device 1. It is arranged in a shape.

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 can be provided at intervals in the length direction of the nose portion 14. Further, although the spray unit 4 is provided with one spray unit 30 for one storage chamber 21, a plurality of spray units 30 may be provided in 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 as will be described later, it is preferable to use a liquid W having a surface tension of 26 to 40 mNm from the viewpoint of preventing liquid leakage from the spray portion 30.

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 opening surface side of the upper cover 15, and an outer circumference of the upper cover 15 and the partition member 16. It includes a packing 17 interposed between the portions, and an elongated flat plate-shaped lower surface plate 18 fixed to the upper cover 15 that closes the opening surface side of the upper cover 15 so as to cover 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. In the partition member 16, four recesses 19 that are elongated along the length direction of the nose portion 14 and are open to the liquid supply path are formed at intervals in the length direction of the nose portion 14, and the partition member 16 is formed. Four lid members 20 that close the surface of the recess 19 on the liquid supply path side are fixed to the recess 19, and the lid member 20 and the recess 19 form four elongated storage chambers 21 in the length direction of the nose portion 14.

A connection pipe 22 for connecting the tip of the liquid tank 3 and the base end of the liquid supply path 13 is provided in the main body 11, and as shown in FIG. 3, when the spray surface is directed toward the ground, the handle The portion 12 is arranged above the liquid supply path, the nose portion 14 is arranged substantially horizontally with respect to the ground, and 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 of the ground. The liquid W in the liquid tank 3 is configured to fill the liquid supply path 13 through the connecting pipe 22.

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 an adjustment mechanism 24 that can open and close the communication hole 23 is configured in the storage chamber 21. A spherical float 25 is provided, and the adjusting mechanism 24 is configured to regulate the maximum capacity of the liquid W filled in the storage chamber 21. However, as the adjusting mechanism 24, instead of the float 25, a solenoid valve that opens and closes the communication hole 23 is provided, and the solenoid valve is controlled to open and close so that the maximum capacity of the liquid W in the storage chamber 21 is regulated. It is also possible to do.

The 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. The distance between the bottom surfaces is set to be 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. .. 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 liquid in the storage chamber 21 has the nose portion 14 arranged substantially horizontally with respect to the ground. When the amount of W is equal to or less than the specified value, the liquid W in the liquid supply path 13 flows into the storage chamber 21, but as shown in FIG. 9, the float 25 is placed on the liquid W filled in the storage chamber 21. When the liquid W of the specified value is filled in the storage chamber 21 by floating, the float 25 is pressed against the opening edge of the communication hole 23 on the storage chamber 21 side by the buoyancy F to close the communication hole 23 and the liquid. The liquid W in the supply path 13 is configured to prevent further inflow into the storage chamber 21.

A liquid supply hole 26 leading to the spray unit is formed on the base side of the nose portion 14 on the bottom wall portion on the spray side of the storage chamber 21, and the liquid supply hole 26 is closed on the surface of the bottom wall portion on the spray portion side. As described above, the spray portion 30 is provided, the lower surface plate 18 is formed with a spray hole 27 corresponding to the spray portion 30, and the liquid W in the storage chamber 21 is atomized by the spray portion 30 and is atomized from the spray hole 27. It is configured to be sprayed to the outside.

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 can be set to 8 μm to 12 μm in order to prevent liquid leakage from the micropores 33.

As the piezoelectric element 35, 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), which is a well-known structure. Is. 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 spraying unit 30, the spraying state can be visually observed.

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 at a desired 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, when the posture of the ultrasonic spraying device 1 is changed, the liquid W in the storage chamber 21 is set to the lower end position of the lowermost microhole 33 through which the liquid W can flow. The maximum value H1 of the water level is set to be 50 mm or less, and as the liquid W, a liquid W having a surface tension of 26 to 40 mN / m, more preferably 26 to 32 mN / m can be adopted. 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 spraying device 1 is used in a house, an automobile, or the like, as shown in FIG. 3, the distance H2 from the spraying portion 30 to the sprayed object is, for example, about 100 mm to 300 mm. Therefore, for example, the spray angle θ from the spraying portion 30 is 15 to 25 °, more preferably 17 to 17 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. It is set to 23 °. Further, the distance L between the adjacent spraying portions 30 is 30 mm or more so that the mist sprayed from the adjacent spraying portions 30 partially overlaps with the sprayed object according to the assumed distance H2 to the sprayed object. It is set to 150 mm.

Specifically, when the object to be sprayed is a cloth product, the distance (H2) to the object is 100 mm (clothing, inside a car, etc.), 200 mm (bed, sofa, curtain, etc.), 300 mm (upper part of curtain, etc.). For each distance, the spray angle of the spray section 30 is set to 20 degrees, and the distance L between the spray sections when the liquids sprayed from each spray section overlap on the object by about 10% is calculated. Then, it becomes as shown in Table 1 below.

From Table 1, the distance L between the adjacent spraying portions 30 is such that the mist sprayed from the adjacent spraying portions 30 partially overlaps in the spraying target according to the assumed distance H2 to the spraying object. It can be seen that the setting may be 30 mm to 150 mm, more preferably 30 mm to 100 mm.

When using this ultrasonic spraying device 1, first, the nose portion 14 is made substantially horizontal with respect to the ground, and the tip of the nose portion 14 is directed toward the ground, so as shown in FIGS. 8 and 9. As described above, the liquid W in the liquid tank 3 is supplied to the liquid supply path 13, and the specified amount of liquid W determined by the buoyancy of the float 25 is passed through the communication holes 23 from the liquid supply path 13 into the plurality of storage chambers 21. Will be filled. 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 liquid W in the liquid tank 3 is stored in the same manner as described above by making the nose portion 14 substantially horizontal to the ground again or by directing the tip of the nose portion 14 toward the ground. The chamber 21 will be filled. Further, as shown in FIG. 11, when the tip end side of the nose portion 14 is directed toward the ground, 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 done.

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 an upper direction, a lower direction, and a 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: Diaphragm 35: Piezoelectric element 36: Insertion hole 37: Light emitting diode 40: Secondary battery 41: Control unit

Claims (2)

An ultrasonic spraying device equipped with a spraying unit that sprays liquid by ultrasonic vibration.
Two or more spraying parts are arranged between adjacent spraying parts with a gap of 30 to 100 mm.
Moreover, the ultrasonic spraying device in which the spraying angle of each spraying portion is set to 15 to 25 °. The ultrasonic spraying apparatus according to claim 1, wherein two or more storage chambers for storing liquids are provided corresponding to the spraying portions, and the liquids in each storage chamber are sprayed to the outside by the corresponding spraying portions.

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