JP2011235202A - Atomizing device - Google Patents

Atomizing device Download PDF

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JP2011235202A
JP2011235202A JP2010106035A JP2010106035A JP2011235202A JP 2011235202 A JP2011235202 A JP 2011235202A JP 2010106035 A JP2010106035 A JP 2010106035A JP 2010106035 A JP2010106035 A JP 2010106035A JP 2011235202 A JP2011235202 A JP 2011235202A
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nozzle plate
vibrator
frame
nozzle
frame body
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JP2011235202A5 (en
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Kiyoshizu Kinuta
精鎮 絹田
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Optnics Precision Co Ltd
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Optnics Precision Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0638—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced by discharging the liquid or other fluent material through a plate comprising a plurality of orifices
    • B05B17/0646—Vibrating plates, i.e. plates being directly subjected to the vibrations, e.g. having a piezoelectric transducer attached thereto

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Abstract

PROBLEM TO BE SOLVED: To provide an atomizing device in which fine particles are monodispersed and uniformly sprayed.SOLUTION: The atomizing device includes a vibrator 15, a frame 16 vibrated by the vibrator 15, and a nozzle plate 18 provided at the frame 16 and having many nozzle holes 17 through which liquid passes. The frame 16 includes an annular flange 19 fixed to the vibrator 15 and a protrusion 21 protruding from the flange 19 and having a central opening 20 in which the nozzle plate 18 is provided, wherein the protrusion 21 is curved. Because the frame 16 is a curved structure having strength, the frame 16 is vibrated by elastic vibration generated by the vibrator 15 and the entire nozzle plate 18 is vertically vibrated integrally with the frame 16 so that fine particles are monodispersed and uniformly sprayed.

Description

本発明は、圧電振動子等の振動子によりノズル板を振動させて液体を霧化する霧化装置に関する。   The present invention relates to an atomizing apparatus that atomizes a liquid by vibrating a nozzle plate by a vibrator such as a piezoelectric vibrator.

従来、喘息患者が薬を吸引するためのネブライザーや、香料を散布する香料発生器等に使用される霧化装置は、多数の超微細なノズル孔を有するノズル板を圧電振動子で振動させることにより薬や香料の液体を霧化させるものであり、特許文献１や特許文献２で提唱されている。     Conventionally, nebulizers for asthma patients to suck drugs, and atomizers used for fragrance generators that disperse fragrances, etc., vibrate a nozzle plate having a large number of ultrafine nozzle holes with a piezoelectric vibrator. Is used to atomize liquids of medicines and fragrances, and is proposed in Patent Document 1 and Patent Document 2.

特開平４−３７１２７３号公報JP-A-4-371273 特開平６−７７２０号公報JP-A-6-7720

しかしながら、上記の特許文献１及び特許文献２に記載のような霧化装置において、図９Ａに示すようにノズル板１Ａが平面形状である場合、圧電振動子２によって発生させた弾性振動によりノズル板１Ａが一点鎖線で示すように図面の上下方向に波を打って振動するため、ノズル孔３から振幅の大きいＡ点では微粒子が多量に噴出されるが、振幅の小さいＢ点では微粒子が少量しか噴出されず、振幅されないＣ点では微粒子が噴出されない不具合があり、このため微粒子が単分散されず均一に噴霧されない課題があった。     However, in the atomization apparatus as described in Patent Document 1 and Patent Document 2 described above, when the nozzle plate 1A has a planar shape as shown in FIG. 9A, the nozzle plate is caused by elastic vibration generated by the piezoelectric vibrator 2. Since 1A is oscillated by swelling in the vertical direction of the drawing as indicated by the alternate long and short dash line, a large amount of fine particles are ejected from the nozzle hole 3 at the point A having a large amplitude, but only a small amount of fine particles are ejected from the point B having a small amplitude. There is a problem that the fine particles are not ejected at the point C which is not ejected and is not oscillated. For this reason, there is a problem that the fine particles are not monodispersed and are not sprayed uniformly.

また、図９Ｂに示すように、ノズル板１Ｂが半球面形状である場合、圧電振動子２によって発生させた弾性振動によりノズル板１Ｂが図面の上下方向に波を打って振動する際、ノズル板１Ｂの中央部分Ｄ点のノズル孔３からは微粒子が多量に噴出されるが、ノズル板１Ｂの周辺部分Ｅ点からは微粒子が少量しか噴出されない不具合があり、このため、上述と同様、微粒子が単分散されず均一に噴霧されない課題があった。     As shown in FIG. 9B, when the nozzle plate 1B has a hemispherical shape, when the nozzle plate 1B vibrates in a vertical direction in the drawing due to elastic vibration generated by the piezoelectric vibrator 2, the nozzle plate Although a large amount of fine particles are ejected from the nozzle hole 3 at the central portion D of 1B, there is a problem that only a small amount of fine particles are ejected from the peripheral portion E of the nozzle plate 1B. There was a problem that it was not monodispersed and was not sprayed uniformly.

本発明は、上記課題に着目し、微粒子が単分散されて均一に噴霧される霧化装置を提供することを目的とする。   An object of the present invention is to provide an atomization device in which fine particles are monodispersed and sprayed uniformly, paying attention to the above problems.

請求項１に記載の霧化装置では、振動子と、この振動子により振動される枠体と、この枠体に設けられ液体が通過する多数のノズル孔を有するノズル板とを備え、前記枠体は前記振動子と固定される環状の鍔部と、この鍔部から突き出し中央開口部に前記ノズル板が設けられる突出部とを有し、この突出部を湾曲させたものである。このように、枠体を湾曲した強度のある構造体としたため、枠体が振動子によって発生させた弾性振動により上下方向に振動するとともにこの枠体と一体になってノズル板全体が上下方向に振動するようになり、図９Ａに示すようにノズル板が波を打つのを解決したものである。   The atomization device according to claim 1, comprising: a vibrator; a frame body that is vibrated by the vibrator; and a nozzle plate that is provided in the frame body and includes a number of nozzle holes through which liquid passes. The body has an annular flange fixed to the vibrator, and a protrusion protruding from the flange and provided with the nozzle plate at a central opening, and the protrusion is curved. As described above, since the frame body has a curved and strong structure, the frame body vibrates in the vertical direction due to the elastic vibration generated by the vibrator, and the entire nozzle plate is integrated with the frame body in the vertical direction. As shown in FIG. 9A, the nozzle plate hits a wave.

請求項２に記載の霧化装置では、前記突出部を最も強度のある半球形の形状にしたものである。 In the atomization apparatus according to claim 2, the projecting portion has a hemispherical shape having the strongest strength.

請求項３記載の霧化装置では、ノズル孔を液体の入口側から出口側へ向かってこの出口側の途中まで先細形状にするとともに、この先細端部から出口端までストレート形状にしたものである。このようにすることにより、ノズル孔の入口側へ液体が円滑に供給されるとともに出口端からは微粒子が粒径制御され、均一に且つ垂直方向へ噴霧されるようにしたものである。 In the atomizing apparatus according to claim 3, the nozzle hole is tapered from the liquid inlet side to the outlet side to the middle of the outlet side, and straight from the tapered end to the outlet end. . In this way, the liquid is smoothly supplied to the inlet side of the nozzle hole, and the fine particles are controlled from the outlet end to be sprayed uniformly and vertically.

以上説明したように、本発明に係る請求項１に記載の霧化装置によれば、突出部が湾曲した強度のある枠体がノズル板と一体になって振動するため、ノズル板は従来のように波を打って振動することはなくノズル板全体が均一に上下方向に振動するため、ノズル板の全てのノズル孔から微粒子を単分散させて均一に噴霧させることができるという優れた効果を得ることができる。   As described above, according to the atomizing device of the first aspect of the present invention, the strong frame body with the curved projecting portion vibrates integrally with the nozzle plate. In this way, the entire nozzle plate vibrates in the vertical direction without causing waves to vibrate, so that it is possible to uniformly disperse fine particles from all the nozzle holes of the nozzle plate and to spray uniformly. Obtainable.

請求項２に記載の霧化装置によれば、突出部を半球形の形状にしたので、枠体は最も強度のある構造となって、枠体の全体が均一に振動するため、ノズル孔から微粒子を単分散させて均一に噴霧させるという優れた効果を確実に得ることができる。 According to the atomizing device of the second aspect, since the projecting portion has a hemispherical shape, the frame body has the strongest structure, and the entire frame body vibrates uniformly. The excellent effect that the fine particles are monodispersed and sprayed uniformly can be surely obtained.

請求項３に記載の霧化装置によれば、ノズル孔を液体の入口側から出口側へ向かってこの出口側の途中まで先細形状にするとともに、この先細端部から出口端までストレート形状にしたため、ノズル孔の入口側へ液体が円滑に供給されるとともに出口端からは微粒子が粒径制御され、単分散されて均一に且つ垂直方向へ噴霧させるという優れた効果を得ることができる。 According to the atomizing device of the third aspect, the nozzle hole is tapered from the liquid inlet side to the outlet side to the middle of the outlet side and straight from the tapered end to the outlet end. The liquid can be smoothly supplied to the inlet side of the nozzle hole, and fine particles can be controlled from the outlet end to be monodispersed and sprayed uniformly and vertically.

本発明の実施形態を示す霧化装置を使用したネブライザーの断面図である。It is sectional drawing of the nebulizer which uses the atomization apparatus which shows embodiment of this invention. 本発明の実施形態を示す霧化装置を使用したネブライザーの平面図である。It is a top view of a nebulizer using an atomization device showing an embodiment of the present invention. 本発明の実施形態を示す枠体の拡大断面図である。It is an expanded sectional view of the frame which shows the embodiment of the present invention. 本発明の他の第１実施形態を示す枠体の断面図である。It is sectional drawing of the frame which shows other 1st Embodiment of this invention. 本発明の他の第２実施形態を示す枠体の断面図である。It is sectional drawing of the frame which shows other 2nd Embodiment of this invention. 本発明の実施形態を示すノズル板の断面図である。It is sectional drawing of the nozzle plate which shows embodiment of this invention. 本発明の実施形態を示すノズル板の一部拡大断面図である。It is a partial expanded sectional view of the nozzle plate which shows embodiment of this invention. 本発明の他の第１実施形態を示すノズル板の拡大断面図である。It is an expanded sectional view of the nozzle plate which shows other 1st Embodiment of this invention. 本発明の他の第２実施形態を示すノズル板の拡大断面図である。It is an expanded sectional view of the nozzle plate which shows other 2nd Embodiment of this invention. 本発明の他の第３実施形態を示すノズル板の拡大断面図である。It is an expanded sectional view of the nozzle plate which shows other 3rd Embodiment of this invention. 従来の霧化装置の断面図である。It is sectional drawing of the conventional atomization apparatus. 従来の他の霧化装置の断面図である。It is sectional drawing of the other conventional atomization apparatus.

以下、本発明の実施形態を図１〜図８に基づいて説明するが、本発明は以下の実施形態について何ら限定されるものではない。     Hereinafter, although embodiment of this invention is described based on FIGS. 1-8, this invention is not limited at all about the following embodiment.

図１及び図２において、１０はネブライザーであり、本体１１には薬の液体を本体11内に注入する注入口１２と本発明の霧化装置１３が設けられている。     1 and 2, reference numeral 10 denotes a nebulizer, and a main body 11 is provided with an injection port 12 for injecting a liquid of medicine into the main body 11 and an atomizing device 13 of the present invention.

この霧化装置１３は、リード線１４より電圧が印加され図面の左右方向へ振動する圧電振動子タイプの振動子１５と、この振動子１５により図面の上下方向に振動される枠体１６と、この枠体１６に設けられ液体が通過する多数のノズル孔１７を有するノズル板１８とを備えている。   The atomizing device 13 includes a piezoelectric vibrator type vibrator 15 that is applied with a voltage from a lead wire 14 and vibrates in the horizontal direction of the drawing, a frame body 16 that is vibrated in the vertical direction of the drawing by the vibrator 15, And a nozzle plate 18 having a large number of nozzle holes 17 provided in the frame 16 and through which liquid passes.

枠体１６は振動子１５と固定される環状の鍔部１９と、この鍔部から突き出し中央開口部２０にノズル板１８が設けられる突出部２１とを有し、この突出部２１を湾曲した半球形の形状にしている。このように枠体１６は半球形の形状にしたことにより最も強度のある構造としている。   The frame 16 has an annular flange 19 fixed to the vibrator 15 and a protrusion 21 protruding from the flange and provided with a nozzle plate 18 at the central opening 20, and the protrusion 21 has a curved hemisphere. It has a shape. As described above, the frame body 16 has a hemispherical shape and has the strongest structure.

そして、中央開口部２０にはこの開口部２０を覆うようにノズル板１８が、鍔部１９には振動子１５がそれぞれ接着剤により固着されている。 The nozzle plate 18 is fixed to the central opening 20 so as to cover the opening 20, and the vibrator 15 is fixed to the flange 19 by an adhesive.

枠体１６は、図３に示すように、厚さＴが５０μｍ〜２mm、鍔部１９の外径Ａが１５mm、鍔部１９の内径Ｂが５mm、突出部２１の高さＨが１．８mmで、ニッケルやステンレスまたはこれらの合金から形成されている。中央開口部２０の口径Ｃは２mmである。 As shown in FIG. 3, the frame 16 has a thickness T of 50 μm to 2 mm, an outer diameter A of the flange portion 19 of 15 mm, an inner diameter B of the flange portion 19 of 5 mm, and a height H of the protruding portion 21 of 1.8 mm. And formed of nickel, stainless steel or an alloy thereof. The diameter C of the central opening 20 is 2 mm.

上述した実施形態は、ネブライザーに使用する霧化装置の場合であるが、本発明の霧化装置を、例えば、香料を多量に発生する香料発生器や農薬を多量に噴霧させる噴霧器等に使用する場合は、図４に示すように複数個の枠体１６Ａを一体成形すれば極めて有用である。 Although embodiment mentioned above is the case of the atomization apparatus used for a nebulizer, the atomization apparatus of this invention is used for the sprayer etc. which spray a lot of fragrance | flavor generators and agricultural chemicals which generate | occur | produce a fragrance | flavor in large quantities, for example. In this case, it is extremely useful if a plurality of frames 16A are integrally formed as shown in FIG.

即ち、鍔部１９に固着された振動子１５により複数個の枠体１６Ａが同時に図面の上下方向に振動されることにより、突出部２１Ａに設けられた複数個のノズル板１８で同時に多量な超微細な粒子が噴霧させることができる。 That is, the plurality of frames 16A are simultaneously vibrated in the vertical direction of the drawing by the vibrator 15 fixed to the flange portion 19, so that a plurality of nozzle plates 18 provided on the projecting portion 21A can be Fine particles can be sprayed.

図５は枠体１６の他の実施形態を示すもので、突出部２１Ｂの一部２２を湾曲させて、枠体１６Ｂに強度を持たせ、この湾曲部２２の振動によりノズル板１８を図面の上下方向に振動させるようにしたものであるが、図３に示した枠体１６の方が上述したように突出部２１を半球形の形状にした方が最も強度があり、好ましい。 FIG. 5 shows another embodiment of the frame body 16. A part 22 of the projecting portion 21B is curved to give strength to the frame body 16B, and the nozzle plate 18 is moved by the vibration of the curved portion 22 in the drawing. The frame body 16 shown in FIG. 3 has the highest strength and is preferably formed in the hemispherical shape as described above.

図６はノズル板１８の断面図、図７はノズル板１８の一部拡大断面図であり、ノズル孔１７を液体の入口２３側から出口２４側へ向かってこの出口２４側の途中まで先細形状にするとともに、この先細端部２５から出口２４端までストレート部２６にした形状にしている。 6 is a cross-sectional view of the nozzle plate 18, and FIG. 7 is a partially enlarged cross-sectional view of the nozzle plate 18. The nozzle hole 17 tapers from the liquid inlet 23 side toward the outlet 24 side to the middle of the outlet 24 side. In addition, the straight portion 26 is formed from the tapered end portion 25 to the outlet 24 end.

具体例として、ノズル板１８の厚みｔを３０μｍ〜３００μｍ、入口２３の角度ａを３０°〜１２０°、ストレート部２５は長さｂを５μｍ〜５０μｍ、口径ｃを０．５μｍ〜１００μｍとしている。 As a specific example, the thickness t of the nozzle plate 18 is 30 μm to 300 μm, the angle a of the inlet 23 is 30 ° to 120 °, the straight portion 25 has a length b of 5 μm to 50 μm, and a diameter c of 0.5 μm to 100 μm.

このような形状にすることにより、ノズル孔１７の入口２３側へ液体が円滑に供給されるとともに出口２４端からは微粒子が粒径制御され、均一に且つ垂直方向へ噴霧されるようにしたものである。 By adopting such a shape, the liquid is smoothly supplied to the inlet 23 side of the nozzle hole 17 and the particle diameter is controlled from the end of the outlet 24 to be sprayed uniformly and vertically. It is.

図８Ａ〜図８Ｃはノズル板１８の他の実施形態を示したものである。図８Ａに示すようにノズル孔１７Ａを入口２３Ａから出口２４Ａまでストレートに形成したり、図８Ｂに示すようにノズル孔１７Ｂを入口２３Ｂから出口２４Ｂまで徐々に曲線的に細くしたり、図８Ｃに示すようにノズル孔１７Ｃを入口２３Ｃから出口２４Ｃまで徐々に直線的に細くしたりしても良い。 8A to 8C show another embodiment of the nozzle plate 18. As shown in FIG. 8A, the nozzle hole 17A is formed straight from the inlet 23A to the outlet 24A, or the nozzle hole 17B is gradually narrowed from the inlet 23B to the outlet 24B as shown in FIG. 8B. As shown, the nozzle hole 17C may be gradually narrowed linearly from the inlet 23C to the outlet 24C.

但し、図８Ａの場合は入口２３Ａ側へ液体が円滑に供給されない恐れがある。図８Ｂ及び図８Ｃの場合は出口２４Ｂ及び２４Ｃにストレート部２６がないため垂直方向へ噴霧されない恐れがある。このため、ノズル孔１７は図６に示す形状にした方が好ましい。 However, in the case of FIG. 8A, the liquid may not be smoothly supplied to the inlet 23A side. In the case of FIG. 8B and FIG. 8C, since there is no straight part 26 in outlet 24B and 24C, there exists a possibility that it may not spray in a perpendicular direction. For this reason, it is preferable that the nozzle hole 17 has a shape shown in FIG.

（作用）
本実施形態は上記のように構成されており、以下その作用について説明する。図１において、振動子１５がリード線１４より電圧が印加されて図面の左右方向へ振動すると、発生した弾性振動により枠体１６の突出部２１が図面の上下方向に振動する。 (Function)
This embodiment is configured as described above, and the operation thereof will be described below. In FIG. 1, when the vibrator 15 is applied with a voltage from the lead wire 14 and vibrates in the horizontal direction of the drawing, the protruding portion 21 of the frame 16 vibrates in the vertical direction of the drawing by the generated elastic vibration.

このとき、突出部２１は強度のある湾曲した半球形の形状となっているため、図１において一点鎖線で示すように突出部２１の全体が振動するので、ノズル板１８が枠体１６と一体になって一点鎖線で示すように上下方向に振動する。 At this time, since the projecting portion 21 has a strong curved hemispherical shape, the entire projecting portion 21 vibrates as shown by a one-dot chain line in FIG. 1, so that the nozzle plate 18 is integrated with the frame body 16. As shown by the alternate long and short dash line, it vibrates up and down.

このように、ノズル板１８全体が均一に上下方向に振動するため、図９Ａに示した従来のように波を打って振動することはなく、ノズル板１８の全てのノズル孔１７から微粒子が単分散されて均一に、且つ多量に噴霧される。 In this way, the entire nozzle plate 18 vibrates uniformly in the vertical direction, so that the nozzle plate 18 does not vibrate and vibrate unlike the conventional case shown in FIG. It is dispersed and sprayed uniformly and in large quantities.

しかも、ノズル孔１７を液体の入口２３側から出口２４側へ向かってこの出口２４側の途中まで先細形状にするとともに、この先細端部２５から出口２４端までストレート部２６にした形状にすることにより、ノズル孔１７の入口２３側へ液体が円滑に供給されるとともに出口２４端からは微粒子が粒径制御され、単分散されて均一に且つ垂直方向へ噴霧されることが確認できた。   In addition, the nozzle hole 17 is tapered from the liquid inlet 23 side toward the outlet 24 side to the middle of the outlet 24 side, and the straight hole 26 is formed from the tapered end 25 to the outlet 24 end. As a result, it was confirmed that the liquid was smoothly supplied to the inlet 23 side of the nozzle hole 17 and the particle size was controlled from the end of the outlet 24 to be monodispersed and uniformly sprayed in the vertical direction.

１３ 霧化装置
１５ 振動子
１６ 枠体
１７ ノズル孔
１８ ノズル板
１９ 鍔部
２０ 開口部
２１ 突出部

DESCRIPTION OF SYMBOLS 13 Atomizer 15 Vibrator 16 Frame 17 Nozzle hole 18 Nozzle plate 19 Gutter part 20 Opening part 21 Projection part

Claims (3)

振動子と、この振動子により振動される枠体と、この枠体に設けられ液体が通過する多数のノズル孔を有するノズル板とを備えた霧化装置において、前記枠体は前記振動子と固定される環状の鍔部と、この鍔部から突き出し中央開口部に前記ノズル板が設けられる突出部とを有し、この突出部を湾曲させていることを特徴とする霧化装置。 In an atomization apparatus including a vibrator, a frame body that is vibrated by the vibrator, and a nozzle plate that is provided in the frame body and has a number of nozzle holes through which liquid passes, the frame body includes the vibrator and An atomizing device characterized by having an annular flange fixed and a protrusion protruding from the flange and provided with the nozzle plate at a central opening, and the protrusion is curved. 前記突出部は、半球形の形状である請求項１記載の霧化装置。 The atomization device according to claim 1, wherein the protrusion has a hemispherical shape. 前記ノズル孔は、液体の入口側から出口側へ向かってこの出口側の途中まで先細形状であるとともに、この先細端部から出口端までストレート形状である請求項１記載の霧化装置。
2. The atomization device according to claim 1, wherein the nozzle hole has a tapered shape from the liquid inlet side toward the outlet side to the middle of the outlet side, and has a straight shape from the tapered end portion to the outlet end.
JP2010106035A 2010-05-01 2010-05-01 Atomizing device Pending JP2011235202A (en)

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JP2013141531A (en) * 2012-01-11 2013-07-22 Dainippon Printing Co Ltd Liquid cartridge for spraying device, liquid cartridge package, spraying device and mesh-furnished container for spraying device
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JP2014008468A (en) * 2012-06-29 2014-01-20 Dainippon Printing Co Ltd Liquid cartridge for spraying device, mesh member for spraying device, spraying device, and container with mesh for spraying device
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JP2014159025A (en) * 2013-02-19 2014-09-04 Micro Base Technology Corp Liquid atomization module including geometric solid spray plate
JP2015096235A (en) * 2015-01-28 2015-05-21 田中貴金属工業株式会社 Mesh for nebulizer and method for manufacturing the same
WO2017154937A1 (en) * 2016-03-11 2017-09-14 株式会社ニコン Mist generating device, film forming device, mist generating method, film forming method, and device manufacturing method
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JPWO2017154937A1 (en) * 2016-03-11 2019-01-10 株式会社ニコン Mist generating apparatus, film forming apparatus, mist generating method, film forming method, and device manufacturing method
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