JP2008188515A - Ultrasonic atomizer - Google Patents

Ultrasonic atomizer Download PDF

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Publication number
JP2008188515A
JP2008188515A JP2007024166A JP2007024166A JP2008188515A JP 2008188515 A JP2008188515 A JP 2008188515A JP 2007024166 A JP2007024166 A JP 2007024166A JP 2007024166 A JP2007024166 A JP 2007024166A JP 2008188515 A JP2008188515 A JP 2008188515A
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guide member
ultrasonic atomizer
support member
atomizer according
piezoelectric ceramic
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JP5099410B2 (en
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Daisuke Takahata
大介 高畠
Kazuyuki Ikehama
和之 池浜
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Fukoku Co Ltd
Fukoku KK
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Fukoku Co Ltd
Fukoku KK
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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
    • 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
    • B05B17/0653—Details
    • B05B17/0676—Feeding means
    • B05B17/0684—Wicks or the like

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  • Special Spraying Apparatus (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a stable atomizing function in a simple structure in an ultrasonic atomizer. <P>SOLUTION: A liquid storing part 1 stores a liquid 3 in the inside. A water absorbing part 5 absorbs and keeps the liquid 3 introduced into the liquid storing part 1. A guide member 9 is arranged at the periphery in the vicinity of the opening part 7 of the liquid storing part 1. A supporting member 11 is housed by horizontally lying in the guide member 9 in a freely changing position. A piezoceramics 13 is fixed to the back surface of the supporting member 11. A plate to be vibrated 17 possesses a small hole 23 and closes it traversing the penetrating hole 15 of the piezoceramics 13. The center part of the plate to be vibrated 17 is pressed to the upper end surface of the water absorbing part 5 by its own weight including the supporting member 11 and the piezoceramics 13. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は超音波霧化装置に係り、例えば水や薬液などの液体を霧化する超音波霧化装置に関する。   The present invention relates to an ultrasonic atomizer, and more particularly to an ultrasonic atomizer that atomizes a liquid such as water or a chemical solution.

従来、水や薬液などの液体を霧化する超音波霧化装置としては、例えば特許第３３４２０９５号公報（特許文献１）に示す構成が知られている。   Conventionally, as an ultrasonic atomizer that atomizes liquid such as water or a chemical solution, for example, a configuration shown in Japanese Patent No. 3342095 (Patent Document 1) is known.

すなわち、圧電振動子に固着された穴あき振動板にスポンジ、繊維束その他の親水性保液材を接触させ、その振動板から液体を霧化する超音波噴霧装置において、その保液材の一端を吸液端として液体の供給源に浸ける一方、その保液材の他端を霧化端として圧縮コイルスプリングや板スプリング等のスプリングによってその振動板に接触させ、その吸液端から吸い上げられた液体をその霧化端の表面からその振動板に供給する構成を有している。   That is, in an ultrasonic spraying apparatus in which a sponge, fiber bundle or other hydrophilic liquid retaining material is brought into contact with a perforated diaphragm fixed to a piezoelectric vibrator and liquid is atomized from the diaphragm, one end of the fluid retaining material Was immersed in the liquid supply source as the liquid absorption end, while the other end of the liquid retaining material was brought into contact with the vibration plate by a spring such as a compression coil spring or a plate spring with the other end of the liquid retaining material being sucked up from the liquid absorption end. The liquid is supplied to the diaphragm from the surface of the atomizing end.

このような超音波霧化装置では、振動板と保液材との接触の度合を常に一定に保つことにより安定的な霧化を得ようとするものである。
特許第３３４２０９５号公報 In such an ultrasonic atomizing apparatus, a stable atomization is obtained by always keeping the degree of contact between the diaphragm and the liquid retaining material constant.
Japanese Patent No. 3342095

しかしながら、上述した特許文献１のような超音波霧化装置は、スプリングによってその振動板と保液材間の安定した接触状態を実現しようとしたものであるが、実際には、それら振動板と保液材との間の押圧力が大きくなり易く、長時間の使用によって保液材の霧化端がばらけたり、又はスプリングの押圧が強すぎて振動板にひびが入る場合がある一方、スプリングの押圧力を適切な状態に調節することが困難で、それら振動板と保液材間の安定した接触状態を確保し難いのが現状であり、改善が望まれていた。   However, the ultrasonic atomizer as in Patent Document 1 described above is intended to achieve a stable contact state between the diaphragm and the liquid retaining material by means of a spring. While the pressing force between the liquid retaining material is likely to increase, the atomizing end of the liquid retaining material may be scattered due to prolonged use, or the spring may be too strong to crack the diaphragm, At present, it is difficult to adjust the pressing force of the spring to an appropriate state, and it is difficult to ensure a stable contact state between the diaphragm and the liquid retaining material, and improvement has been desired.

本発明はこのような課題を解決するためになされたもので、簡単な構成によって安定した霧化機能の得られる超音波霧化装置の提供を目的とする。   The present invention has been made to solve such a problem, and an object of the present invention is to provide an ultrasonic atomizer capable of obtaining a stable atomization function with a simple configuration.

そのような課題を解決するために本発明に係る超音波霧化装置は、厚さ方向で対面する第１および第２の面に各々第１および第２の電極を有し広がり振動する圧電セラミックスと、多数の小孔を有しその圧電セラミックスに当該端部が固定された被振動板と、霧化される液体をその被振動板へ導き当該端面がその被振動板に当接する吸水部と、横置きされたその圧電セラミックス部分の自重による上下動を許容するとともに少なくとも水平方向の移動を規制するガイド部材とを具備している。   In order to solve such a problem, an ultrasonic atomizing device according to the present invention includes piezoelectric ceramics that have first and second electrodes on the first and second surfaces facing each other in the thickness direction and vibrate. A vibrating plate having a large number of small holes, the end of which is fixed to the piezoelectric ceramic, and a water absorbing portion that guides the atomized liquid to the vibrating plate and the end surface abuts on the vibrating plate. And a guide member that allows vertical movement of the horizontally placed piezoelectric ceramic portion by its own weight and at least restricts movement in the horizontal direction.

本発明の超音波霧化装置では、上記ガイド部材に対してその圧電セラミックスを所定の位置に支持する支持部材を有する構成も可能である。   In the ultrasonic atomizer of the present invention, a configuration having a support member that supports the piezoelectric ceramic in a predetermined position with respect to the guide member is also possible.

本発明の超音波霧化装置では、上記ガイド部材がその支持部材の外周を囲む筒形である構成も可能である。   In the ultrasonic atomizer of the present invention, a configuration in which the guide member is a cylinder surrounding the outer periphery of the support member is also possible.

本発明の超音波霧化装置では、上記ガイド部材がその支持部材の外周を対向して挟むようにガイドする構成も可能である。   In the ultrasonic atomizer of the present invention, a configuration in which the guide member guides the outer periphery of the support member so as to face each other is also possible.

本発明の超音波霧化装置では、上記支持部材に厚さ方向に貫通する挿通孔を設け、上記ガイド部材がその挿通孔を挿通する棒状体である構成も可能である。   In the ultrasonic atomizer of the present invention, an arrangement may be made in which the support member is provided with an insertion hole penetrating in the thickness direction, and the guide member is a rod-like body that is inserted through the insertion hole.

本発明の超音波霧化装置では、 上記ガイド部材がそれら第１および第２の電極の少なくとも一方の電極と電気的に接続される給電部を備える構成も可能である。   In the ultrasonic atomizer of the present invention, a configuration in which the guide member includes a power feeding unit that is electrically connected to at least one of the first and second electrodes is also possible.

本発明の超音波霧化装置では、上記ガイド部材が一対の棒状体からなり、一方の棒状体は、その第１の電極と電気的に接続される給電部を備え、他方の棒状体は、その第２の電極と電気的に接続される給電部を備える構成も可能である。   In the ultrasonic atomizer of the present invention, the guide member is composed of a pair of rod-shaped bodies, one rod-shaped body includes a power feeding portion that is electrically connected to the first electrode, and the other rod-shaped body is A configuration including a power feeding portion electrically connected to the second electrode is also possible.

本発明の超音波霧化装置では、上記ガイド部材における少なくとも外周面が導電性を有する構成も可能である。   In the ultrasonic atomizer of the present invention, a configuration in which at least the outer peripheral surface of the guide member has conductivity is also possible.

本発明の超音波霧化装置では、上記支持部材にそのガイド部材の外周面に電気的に接続される集電ブラシを備える構成も可能である。   In the ultrasonic atomizer of this invention, the structure provided with the current collection brush electrically connected to the outer peripheral surface of the guide member to the said supporting member is also possible.

本発明の超音波霧化装置では、上記ガイド部材又は支持部材に、他方に弾性的に当接する当接部材を配置する構成も可能である。   In the ultrasonic atomizer of the present invention, a configuration in which a contact member that elastically contacts the other guide member or support member is also possible.

そのような手段を備えた本発明の超音波霧化装置では、厚さ方向で対面する第１および第２の面に各々第１および第２の電極を有し広がり振動する圧電セラミックスに対し、多数の小孔を有する被振動板の端部を固定し、霧化される液体を吸水部によってその被振動板へ導き、横置きされたその圧電セラミックス部分の自重による上下動をガイド部材によって許容するとともに水平方向の移動を規制するから、霧化効率が安定する。   In the ultrasonic atomization apparatus of the present invention provided with such means, the piezoelectric ceramics having first and second electrodes on the first and second surfaces facing each other in the thickness direction, respectively, and spreading and vibrating, The end of the vibrating plate with a large number of small holes is fixed, the liquid to be atomized is guided to the vibrating plate by the water absorption part, and the vertical movement due to the weight of the piezoelectric ceramic part placed horizontally is allowed by the guide member In addition, since the movement in the horizontal direction is restricted, the atomization efficiency is stabilized.

本発明の超音波霧化装置において、上記ガイド部材に対してその圧電セラミックスを所定の位置に支持する支持部材を有する構成では、特に適切な自重を得る事が可能である。   In the ultrasonic atomizing apparatus of the present invention, the structure having the supporting member that supports the piezoelectric ceramic at a predetermined position with respect to the guide member can obtain a particularly appropriate weight.

本発明の超音波霧化装置において、上記ガイド部材がその支持部材の外周を囲む筒形である構成や、その支持部材の外周を対向して挟むようにガイドする構成では、簡単な構成によってガイド可能である。   In the ultrasonic atomizing apparatus of the present invention, the guide member has a simple configuration in the configuration in which the guide member has a cylindrical shape surrounding the outer periphery of the support member or the configuration in which the outer periphery of the support member is opposed and sandwiched. Is possible.

本発明の超音波霧化装置において、上記支持部材に厚さ方向に貫通する貫通孔を設け、上記ガイド部材がその貫通孔を挿通する棒状体である構成でも、簡単な構成によってガイド可能である。   In the ultrasonic atomizing apparatus of the present invention, even if the support member is provided with a through-hole penetrating in the thickness direction and the guide member is a rod-like body that passes through the through-hole, the guide member can be guided by a simple configuration. .

本発明の超音波霧化装置において、上記ガイド部材がそれら第１および第２の電極の少なくとも一方の電極と電気的に接続される給電部を備える構成では、圧電セラミックへの給電構成が簡素化される。   In the ultrasonic atomizing device of the present invention, the configuration in which the guide member includes a power feeding portion that is electrically connected to at least one of the first and second electrodes simplifies the power feeding configuration to the piezoelectric ceramic. Is done.

本発明の超音波霧化装置において、上記ガイド部材が一対の棒状体からなり、一方の棒状体は、その第１の電極と電気的に接続される給電部を備え、他方の棒状体は、その第２の電極と電気的に接続される給電部を備える構成では、給電構成が簡素化される。   In the ultrasonic atomizing apparatus of the present invention, the guide member is composed of a pair of rod-shaped bodies, one rod-shaped body includes a power feeding portion electrically connected to the first electrode, and the other rod-shaped body is In the configuration including the power feeding portion that is electrically connected to the second electrode, the power feeding configuration is simplified.

本発明の超音波霧化装置において、上記ガイド部材における少なくとも外周面が導電性を有する構成では、特に、給電構成が簡素化される。   In the ultrasonic atomizer of the present invention, the power supply configuration is particularly simplified in the configuration in which at least the outer peripheral surface of the guide member has conductivity.

本発明の超音波霧化装置において、上記支持部材に、そのガイド部材の外周面に電気的に接続される集電ブラシを備える構成では、給電部の電気的接続が確実である。   In the ultrasonic atomizing device of the present invention, in the configuration in which the support member includes a current collecting brush that is electrically connected to the outer peripheral surface of the guide member, the electrical connection of the power feeding unit is reliable.

本発明の超音波霧化装置において、上記ガイド部材又は支持部材に、他方に弾性的に当接する当接部材を配置する構成では、上記圧電セラミックスの自重を軽減して霧化効率を向上させることが可能である。   In the ultrasonic atomizing apparatus of the present invention, in the configuration in which the guide member or the support member is provided with a contact member that elastically contacts the other, the self-weight of the piezoelectric ceramic is reduced and the atomization efficiency is improved. Is possible.

以下、本発明に係る実施の形態を図面を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明に係る超音波霧化装置を示す断面図である。   FIG. 1 is a sectional view showing an ultrasonic atomizer according to the present invention.

図１において、例えば貯液部１はビンや缶その他の公知の容器であり、霧化するための例えば水や薬液等の液体３が溜められている。   In FIG. 1, for example, a liquid storage unit 1 is a known container such as a bottle, a can, or the like, and stores a liquid 3 such as water or a chemical solution for atomization.

細長い柱状の吸水部５は、スポンジや繊維からなり、下端を貯液部１の内底部に当接するとともに上端が外部に突出するように貯液部１の開口部７から差し込まれ、貯液部１内に貯水された液体３を吸液、保水するとともに、上端に液体３を供給するものである。   The elongated columnar water absorption part 5 is made of sponge or fiber, and is inserted from the opening 7 of the liquid storage part 1 so that the lower end abuts on the inner bottom part of the liquid storage part 1 and the upper end protrudes to the outside. The liquid 3 stored in 1 is absorbed and retained, and the liquid 3 is supplied to the upper end.

貯液部１の開口部７近傍の外周には、円筒型のガイド部材９が開口部７を囲むように固定されている。   A cylindrical guide member 9 is fixed to the outer periphery of the liquid reservoir 1 in the vicinity of the opening 7 so as to surround the opening 7.

このガイド部材９内には、このガイド部材９の内径より僅かに小径の外径を有しガイド部材９内側形状と同じ外形のリング板状の絶縁性支持部材１１が変位自在に収容されている。   In this guide member 9, an insulating support member 11 in the form of a ring plate having an outer diameter slightly smaller than the inner diameter of the guide member 9 and having the same outer shape as the inner shape of the guide member 9 is accommodated movably. .

すなわち、支持部材１１は、筒型のガイド部材９内をこの軸方向を横切るように横置きされるとともに軸方向（上下方向）に変位可能に、かつ水平方向の移動が規制された状態で収納されている。   That is, the support member 11 is placed in a cylindrical guide member 9 so as to cross the axial direction, is displaceable in the axial direction (vertical direction), and is stored in a state where movement in the horizontal direction is restricted. Has been.

支持部材１１の片面すなわち裏面には、偏平なリング板状の圧電セラミックス１３と、この圧電セラミックス１３の貫通孔１５を横切ってそれに重ねられた円板状の被振動板１７とからなる超音波振動ユニット１９が止着されている。   An ultrasonic vibration comprising a flat ring-plate-shaped piezoelectric ceramic 13 and a disk-shaped vibrating plate 17 which is superimposed on the through-hole 15 of the piezoelectric ceramic 13 on one side, that is, the back surface of the support member 11. The unit 19 is fixed.

圧電セラミックス１３は、従来公知の超音波圧電材料、例えばチタン酸ジルコン酸鉛の材料から薄板状に成形されるとともに厚み方向の分極が施されている。   The piezoelectric ceramic 13 is formed into a thin plate shape from a conventionally known ultrasonic piezoelectric material such as lead zirconate titanate, and is polarized in the thickness direction.

圧電セラミックス１３は、図２に示すように、その厚さ方向で対面する第１の面（図中上面）ｄ１に金などの導電材料からなる第１の電極２１ａが、第２の面（図中下面）ｄ２には同様な第２の電極２１ｂが圧電セラミックス１３の外形形状より若干小さなリング帯状に形成され、図示しない給電用リード線が各々接続されている。   As shown in FIG. 2, the piezoelectric ceramic 13 includes a first electrode 21a made of a conductive material such as gold on a first surface (upper surface in the drawing) d1 facing in the thickness direction. A similar second electrode 21b is formed in a ring band shape slightly smaller than the outer shape of the piezoelectric ceramic 13, and a power supply lead wire (not shown) is connected to the inner and lower surfaces d2.

被振動板１７は、例えばニッケル材料などの薄い金属材料板や樹脂板からなり、その外周端部を圧電セラミックス１３の第２の面ｄ２に重ね、従来公知の手法、例えば接着剤にて固着されている。   The vibration plate 17 is made of, for example, a thin metal material plate such as a nickel material or a resin plate, and its outer peripheral end is overlapped on the second surface d2 of the piezoelectric ceramic 13 and is fixed by a conventionally known method such as an adhesive. ing.

被振動板１７には、微細な小孔２３がその厚み方向に複数（無数）貫通形成されている。これら小孔２３は、圧電セラミックス１３との当接面（上面）側の直径を対向面（下面）側の直径より小さくして先細りとなっている。図１では小孔２３の図示を省略するとともに、図２では誇張して図示されている。   The vibrating plate 17 is formed with a plurality of small holes 23 innumerably in the thickness direction. These small holes 23 are tapered by making the diameter of the contact surface (upper surface) side with the piezoelectric ceramic 13 smaller than the diameter of the opposing surface (lower surface) side. The illustration of the small hole 23 is omitted in FIG. 1 and is exaggerated in FIG.

被振動板１７において、貯液部１の開口部７から若干上部にて、支持部材１１および圧電セラミックス１３を含めた自重により、その中央部が柱状の吸水部５の上端面に載置されるように圧接されている。   In the vibrating plate 17, the central portion thereof is placed on the upper end surface of the columnar water absorbing portion 5 by its own weight including the support member 11 and the piezoelectric ceramic 13 slightly above the opening portion 7 of the liquid storage portion 1. It is so pressed.

このような超音波振動ユニット１９は、リード線を介して第１、第２の電極２１ａ、２１ｂ間に例えば１３３ＫＨｚで２０Ｖｐ−ｐの交流駆動電圧を印加すると、圧電セラミックス１３が長さ方向（径方向）すなわち広がり振動する。   When such an ultrasonic vibration unit 19 applies an AC drive voltage of 20 Vp-p at 133 KHz, for example, between the first and second electrodes 21 a and 21 b via lead wires, the piezoelectric ceramic 13 is moved in the length direction (diameter). Direction), that is, spread and vibrate.

そして、圧電セラミックス１３に支持された被振動板１７は、圧電セラミックス１３の振動によって振動変形（たわみ変形）して超音波振動することになる。   Then, the vibration plate 17 supported by the piezoelectric ceramic 13 is subjected to vibrational deformation (deflection deformation) due to the vibration of the piezoelectric ceramic 13 so as to vibrate ultrasonically.

そのため、図２に示すように、貯液部１から水等を吸水部５で被振動板１７に給水すると、多数の小孔２３を介して液体３が霧化されて貫通孔１５から送出される。   Therefore, as shown in FIG. 2, when water or the like is supplied from the liquid storage unit 1 to the vibration plate 17 by the water absorption unit 5, the liquid 3 is atomized through a large number of small holes 23 and sent out from the through holes 15. The

このような本発明に係る超音波霧化装置では、液体３を溜めた貯液部１内に、その液体３を吸液、保水する柱状の吸水部５を差し込んで上端を外部に突出させ、円筒型のガイド部材９を貯液部１の開口部７近傍の外周に配置し、このガイド部材９内には、ガイド部材９の内径より僅かに小径の外径を有するリング板状の支持部材１１を横置きした状態で変位自在に収容し、小孔２３を有する円板状の被振動板１７でリング板状の圧電セラミックス１３の貫通孔１５を横切って塞ぐとともに、この圧電セラミック１３を支持部材１１の裏面に固定し、それら支持部材１１および圧電セラミックス１３を含めた自重により、その被振動板１７の中央部を吸水部５の上端面に載置されるように圧接させた構成を有している。   In such an ultrasonic atomization apparatus according to the present invention, a columnar water absorption part 5 for absorbing and retaining the liquid 3 is inserted into the liquid storage part 1 in which the liquid 3 is stored, and the upper end protrudes to the outside. A cylindrical guide member 9 is disposed on the outer periphery in the vicinity of the opening 7 of the liquid storage unit 1, and in this guide member 9, a ring plate-like support member having an outer diameter slightly smaller than the inner diameter of the guide member 9. 11 is placed in a displaceable manner in a horizontally placed state, and a disc-shaped vibrating plate 17 having a small hole 23 is closed across the through-hole 15 of the ring-plate-shaped piezoelectric ceramic 13 and the piezoelectric ceramic 13 is supported. It is fixed to the back surface of the member 11, and has a configuration in which the center portion of the vibration plate 17 is press-contacted so as to be placed on the upper end surface of the water absorbing portion 5 by its own weight including the supporting member 11 and the piezoelectric ceramic 13. is doing.

そのため、圧電セラミックス１３に駆動電圧を印加することにより、圧電セラミックス１３の振動変形を介した被振動板１７の振動により、貯液部１からの液体３を被振動板１７の多数の小孔２３から霧化することができるうえ、支持部材１１および圧電セラミックス１３を含めた自重、特に支持部材１１の自重調節が簡単で、吸水部５の上端に対する被振動板１７の押圧力が大きくなり難く、吸水部５の上端面に対する被振動板１７の接触圧力を適切なものとすることが容易となる。   Therefore, by applying a driving voltage to the piezoelectric ceramic 13, the liquid 3 from the liquid storage unit 1 is caused to vibrate by a large number of small holes 23 in the vibrating plate 17 due to vibration of the vibrating plate 17 through vibration deformation of the piezoelectric ceramic 13. And the weight of the supporting member 11 and the piezoelectric ceramic 13 including the supporting member 11 is particularly easy to adjust, and the pressing force of the vibration plate 17 against the upper end of the water absorbing portion 5 is difficult to increase. It becomes easy to make the contact pressure of the vibrating plate 17 with respect to the upper end surface of the water absorption part 5 appropriate.

従って、長時間の使用によって吸水部５の上端がばらける等の変形を生じ難く、経時的に吸水部５と被振動板１７との間の安定した接触状態を確保し易い。しかも自重の微調整も容易で、良好な霧化効率が得られる。   Therefore, it is difficult to cause deformation such as the upper end of the water-absorbing part 5 being scattered due to long-time use, and it is easy to ensure a stable contact state between the water-absorbing part 5 and the vibration plate 17 over time. Moreover, fine adjustment of its own weight is easy and good atomization efficiency can be obtained.

ところで、上述したガイド部材９は支持部材１１の外周を囲む筒型である必要はなく、例えば、支持部材１１の外周を対向して挟むように対をなす扇形のガイド部材片であっても良い。   By the way, the guide member 9 mentioned above does not need to be a cylindrical shape surrounding the outer periphery of the support member 11, and may be, for example, a fan-shaped guide member piece that forms a pair so as to sandwich the outer periphery of the support member 11. .

また、上記ガイド部材９には、圧電セラミックス１３の第１および第２の電極２１ａ、２１ｂの双方、又は少なくとも一方の電極と電気的に接続される電極（給電部）を備える構成も可能である。   The guide member 9 may be configured to include an electrode (power feeding unit) that is electrically connected to both of the first and second electrodes 21a and 21b of the piezoelectric ceramic 13 or at least one of the electrodes. .

次に、本発明に係る超音波霧化装置の他の実施の形態を説明する。   Next, another embodiment of the ultrasonic atomizer according to the present invention will be described.

図３は、本発明に係る超音波霧化装置の他の実施の形態の要部を示す要部断面図である。   FIG. 3 is a cross-sectional view of the main part showing the main part of another embodiment of the ultrasonic atomizer according to the present invention.

図３において、図１の支持部材１１と同様な円板状の支持部材２５は、外周に近い対角位置に１対の挿通孔２７ａ、２７ｂが貫通形成されており、支持手段（図示せず。）に固定されて上下方向に並行に延びる１対のガイド棒（ガイド部材）２９ａ、２９ｂが図４に示すように、各々挿通孔２７ａに遊びを持って挿通されている。   In FIG. 3, a disk-like support member 25 similar to the support member 11 of FIG. 1 has a pair of insertion holes 27a and 27b penetratingly formed at diagonal positions close to the outer periphery, and supports means (not shown). .) And a pair of guide rods (guide members) 29a and 29b extending in parallel in the vertical direction are inserted through the insertion holes 27a with play as shown in FIG.

なお、それ以外の貯液部１、吸水部５、圧電セラミックス１３、被振動板１７等の構成や配置は図１に係る構成と同様である。   The other configurations and arrangements of the liquid storage unit 1, the water absorption unit 5, the piezoelectric ceramic 13, the vibration plate 17 and the like are the same as the configuration according to FIG.

そのため、支持部材２５や圧電セラミックス１３等がガイド棒２９ａ、２９ｂに支持されながら、その自重によって被振動板１７の中央部に吸水部５の上端面が圧接され、図１の構成と同様に、貯液部１の液体３を霧化することができるうえ、支持部材２５および圧電セラミックス１３を含めた自重を適当に調節することにより、吸水部５の上端面に対する被振動板１７の接触圧力の適切なものとすることが容易となる。   Therefore, while the support member 25, the piezoelectric ceramic 13 and the like are supported by the guide rods 29a and 29b, the upper end surface of the water absorbing portion 5 is pressed against the center portion of the vibration plate 17 by its own weight, and similarly to the configuration of FIG. The liquid 3 in the liquid storage unit 1 can be atomized, and the contact pressure of the vibration plate 17 with respect to the upper end surface of the water absorption unit 5 can be adjusted by appropriately adjusting the weight of the liquid storage unit 1 including the support member 25 and the piezoelectric ceramic 13. It becomes easy to be appropriate.

さらに、ガイド棒２９ａ、２９ｂが一対の棒状体からなるから、ガイド棒２９ａ、２９ｂの外周には、圧電セラミックス１３の第１の電極２１ａとの間で適当な手段によって電気的に接続される導電部（給電部）２９ｃを形成し、他方のガイド棒２９ｂにも、第２の電極２１ｂと電気的に接続される導電部（給電部）２９ｄを形成すると、支持部材２５の各々挿通孔２７ａ、２７ｂにガイド棒２９ａ、２９ｂが挿通すれば、ガイド棒２９ａ、２９ｂを介して圧電セラミックス１３に駆動電圧を印加することが可能となる。   Further, since the guide rods 29a and 29b are formed of a pair of rod-shaped bodies, the conductive material electrically connected to the outer periphery of the guide rods 29a and 29b with the first electrode 21a of the piezoelectric ceramic 13 by appropriate means. When the conductive portion (power feeding portion) 29d electrically connected to the second electrode 21b is formed on the other guide rod 29b, the insertion holes 27a of the support member 25 are respectively formed. If the guide rods 29a and 29b are inserted through 27b, a driving voltage can be applied to the piezoelectric ceramic 13 through the guide rods 29a and 29b.

しかも、支持部材２５には、図３に示すように、そのガイド棒２９ａ、２９ｂの外周面に電気的に接続される集電ブラシ２９ｅを備えれば、ガイド棒２９ａ、２９ｂと圧電セラミックス１３の第１、第２の電極２１ａ、２１ｂとの電気的接続がより確実となる。なお、導電部（給電部）２９ｃ、２９ｄには、不図示の交流駆動電圧発生装置が接続されている。   In addition, as shown in FIG. 3, if the support member 25 includes a current collecting brush 29e electrically connected to the outer peripheral surface of the guide rods 29a and 29b, the guide rods 29a and 29b and the piezoelectric ceramics 13 The electrical connection with the first and second electrodes 21a and 21b becomes more reliable. Note that an AC drive voltage generator (not shown) is connected to the conductive portions (power feeding portions) 29c and 29d.

また、図５〜図７に示す構成は、本発明に係る超音波霧化装置の他の実施の形態の要部を示す要部斜視図および要部断面図である。   Moreover, the structure shown in FIGS. 5-7 is the principal part perspective view and principal part sectional drawing which show the principal part of other embodiment of the ultrasonic atomizer which concerns on this invention.

すなわち、図５に示す構成は、方形板状の支持部材３１の一辺近傍に、方形の圧電セラミックス３３を貼り付け、この圧電セラミックス３３に被振動板３５を片持ち支持するように固定するとともに、支持部材３１に貫通形成した挿通孔３７にガイド棒３９を挿通させたものである。   That is, in the configuration shown in FIG. 5, a rectangular piezoelectric ceramic 33 is attached to the vicinity of one side of the rectangular plate-like support member 31, and the vibrating plate 35 is fixed to the piezoelectric ceramic 33 so as to be cantilevered. A guide rod 39 is inserted through an insertion hole 37 formed through the support member 31.

なお、それ以外の貯液部１、吸水部５の構成や配置は図１に係る構成と同様である。   In addition, the structure and arrangement | positioning of the other liquid storage part 1 and the water absorption part 5 are the same as that of the structure which concerns on FIG.

このように、被振動板３５を圧電セラミックス３３に片持ち支持するように固定する構成においても、支持部材３５や圧電セラミックス３３等がガイド棒３９に支持されながら、その自重によって被振動板３５の中央部に吸水部５の上端面が圧接され、図１の構成と同様に、貯液部１の液体３を霧化することができるうえ、支持部材３５および圧電セラミックス３３を含めた自重を適当に調節することにより、吸水部５の上端面に対する被振動板３５の接触圧力の適切なものとすることが容易となる。   Thus, even in the configuration in which the vibration plate 35 is fixed to the piezoelectric ceramic 33 so as to be cantilevered, the support member 35, the piezoelectric ceramic 33, and the like are supported by the guide rod 39, and the vibration plate 35 is supported by its own weight. The upper end surface of the water absorption part 5 is pressed against the center part, and the liquid 3 in the liquid storage part 1 can be atomized in the same manner as in the configuration of FIG. 1, and the own weight including the support member 35 and the piezoelectric ceramics 33 is appropriate. By adjusting to, it becomes easy to make the contact pressure of the vibration plate 35 to the upper end surface of the water absorption part 5 appropriate.

さらに、図６および図７に示す構成は、長方形の支持部材４１に窓部４３を貫通形成し、図５のように、支持部材４１に、圧電セラミックス３３を貼り付けるとともにこの圧電セラミックス３３に被振動板３５（図６では見えない。）を片持ち支持させ、その窓部４３を被振動板３５で塞ぐように配置した構成を有している。   Further, in the configuration shown in FIGS. 6 and 7, a window 43 is formed through a rectangular support member 41, and the piezoelectric ceramic 33 is attached to the support member 41 and the piezoelectric ceramic 33 is covered as shown in FIG. The diaphragm 35 (not visible in FIG. 6) is cantilevered, and the window 43 is disposed so as to be closed by the diaphragm 35.

しかも、図７に示すように、支持部材４１の対向部にガイド壁（ガイド部材）４５を配置して、圧電セラミックス３３を含む支持部材４１を上下でスライド可能に構成したものである。   In addition, as shown in FIG. 7, a guide wall (guide member) 45 is arranged at the opposing portion of the support member 41 so that the support member 41 including the piezoelectric ceramic 33 can be slid up and down.

このような構成においても、その自重によって被振動板３７の中央部に吸水部５の上端面が圧接され、図１の構成と同様に、貯液部１の液体３を霧化することができるうえ、支持部材３５および圧電セラミックス３３を含めた自重を適当に調節することにより、吸水部５の上端面に対する被振動板３５の接触圧力の適切なものとすることが容易となる。   Even in such a configuration, the upper end surface of the water absorption unit 5 is pressed against the center of the vibration plate 37 by its own weight, and the liquid 3 in the liquid storage unit 1 can be atomized in the same manner as the configuration of FIG. In addition, by appropriately adjusting the own weight including the support member 35 and the piezoelectric ceramic 33, it becomes easy to make the contact pressure of the vibration plate 35 with respect to the upper end surface of the water absorbing portion 5 appropriate.

なお、支持部材４１を挟むガイド壁４５は、これに限定されず、支持部材４１の外周を囲む枠型のガイドであっても良い。   The guide wall 45 sandwiching the support member 41 is not limited to this, and may be a frame-type guide surrounding the outer periphery of the support member 41.

また、図８に示すように、支持部材２５にリング状のフェルト板からなる当接部材４７を取り付け、ガイド部材であるガイド棒２９ａ、２９ｂを当接部材４７に貫通させ、当接部材４７とガイド棒２９ａ、２９ｂを弾性的に当接する構成も可能である。なお、他の構成は図３と同様であるから、説明を省略する。   Also, as shown in FIG. 8, a contact member 47 made of a ring-shaped felt plate is attached to the support member 25, and guide rods 29a and 29b, which are guide members, are passed through the contact member 47, A configuration in which the guide rods 29a and 29b are elastically contacted is also possible. Since other configurations are the same as those in FIG.

このような構成では、当接部材４７とガイド棒２９ａ、２９ｂを弾性的に当接するから、圧電セラミックス１３の自重を軽減して霧化効率を向上させることが可能である。なお、当接部材はガイド部材側に設けることも可能である。   In such a configuration, since the contact member 47 and the guide rods 29a and 29b are elastically contacted, the weight of the piezoelectric ceramic 13 can be reduced and the atomization efficiency can be improved. The contact member can be provided on the guide member side.

本発明に係る超音波霧化装置の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows embodiment of the ultrasonic atomizer which concerns on this invention. 図１に示す圧電セラミックスの横断面図である。It is a cross-sectional view of the piezoelectric ceramic shown in FIG. 本発明に係る超音波霧化装置の他の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows other embodiment of the ultrasonic atomizer which concerns on this invention. 図３の支持部材を示す斜視図である。It is a perspective view which shows the supporting member of FIG. 本発明に係る超音波霧化装置の他の実施の形態を示す要部斜視図である。It is a principal part perspective view which shows other embodiment of the ultrasonic atomizer which concerns on this invention. 本発明に係る超音波霧化装置の他の実施の形態を示す要部斜視図である。It is a principal part perspective view which shows other embodiment of the ultrasonic atomizer which concerns on this invention. 本発明に係る超音波霧化装置の他の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows other embodiment of the ultrasonic atomizer which concerns on this invention. 本発明に係る超音波霧化装置の他の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows other embodiment of the ultrasonic atomizer which concerns on this invention.

符号の説明Explanation of symbols

１ 貯液部
３ 液体
５ 吸水部
７ 開口部
９ ガイド部材
１１、２５、３１、４１ 支持部材
１３、３３ 圧電セラミックス
１５ 貫通孔
１７、３５ 被振動板
１９ 超音波振動ユニット
２１ａ 第１の電極
２１ｂ 第２の電極
２３ 小孔
２７ａ、２７ｂ、３７ 挿通孔
２９ａ、２９ｂ ガイド棒（ガイド部材）
２９ｃ、２９ｄ 導電部（給電部）
２９ｅ ブラシ
４３ 窓部
４５ ガイド（ガイド部材）
４７ 当接部材
ｄ１ 第１の面
ｄ２ 第２の面 DESCRIPTION OF SYMBOLS 1 Liquid storage part 3 Liquid 5 Water absorption part 7 Opening part 9 Guide member 11, 25, 31, 41 Support member 13, 33 Piezoelectric ceramic 15 Through-hole 17, 35 Vibrated plate 19 Ultrasonic vibration unit 21a 1st electrode 21b 1st 2 electrode 23 Small holes 27a, 27b, 37 Insertion holes 29a, 29b Guide rod (guide member)
29c, 29d Conductive part (feeding part)
29e Brush 43 Window 45 Guide (guide member)
47 Contact member d1 first surface d2 second surface

Claims (10)

厚さ方向で対面する第１および第２の面に各々第１および第２の電極を有し、広がり振動する圧電セラミックスと、
多数の小孔を有し、前記圧電セラミックスに当該端部が固定された被振動板と、
霧化される液体を前記被振動板へ導き、当該端面が前記被振動板に当接する吸水部と、
横置きされた前記圧電セラミックス部分の自重による上下動を許容するとともに、少なくとも水平方向の移動を規制するガイド部材と、
を具備することを特徴とする超音波霧化装置。 Piezoelectric ceramics having first and second electrodes on the first and second surfaces facing each other in the thickness direction, and vibrating in a spread manner;
A vibrating plate having a large number of small holes, the end of which is fixed to the piezoelectric ceramic;
A liquid to be atomized is guided to the plate to be vibrated, and a water absorbing portion in which the end surface is in contact with the plate to be vibrated;
A guide member that allows vertical movement due to its own weight of the piezoelectric ceramic portion that is placed horizontally, and restricts movement in at least the horizontal direction;
An ultrasonic atomizing device comprising: 前記ガイド部材に対して前記圧電セラミックスを所定の位置に支持する支持部材を有することを特徴とする請求項１記載の超音波霧化装置。 The ultrasonic atomizer according to claim 1, further comprising a support member that supports the piezoelectric ceramic at a predetermined position with respect to the guide member. 前記ガイド部材は、前記支持部材の外周を囲む筒形であることを特徴とする請求項２記載の超音波霧化装置。 The ultrasonic atomizer according to claim 2, wherein the guide member has a cylindrical shape surrounding an outer periphery of the support member. 前記ガイド部材は、前記支持部材の外周を対向して挟むようにガイドすることを特徴とする請求項２記載の超音波霧化装置。 The ultrasonic atomizer according to claim 2, wherein the guide member guides the outer periphery of the support member so as to face each other. 前記支持部材には厚さ方向に貫通する挿通孔を有し、前記ガイド部材は前記挿通孔を挿通する棒状体であることを特徴とする請求項２記載の超音波霧化装置。 3. The ultrasonic atomizer according to claim 2, wherein the support member has an insertion hole penetrating in the thickness direction, and the guide member is a rod-like body that is inserted through the insertion hole. 前記ガイド部材は、前記第１および第２の電極の少なくとも一方の電極と電気的に接続される給電部を備えることを特徴とする請求項５に記載の超音波霧化装置。 The ultrasonic atomizer according to claim 5, wherein the guide member includes a power feeding unit that is electrically connected to at least one of the first and second electrodes. 前記ガイド部材は一対の棒状体からなり、一方の棒状体は前記第１の電極と電気的に接続される給電部を備え、他方の棒状体は前記第２の電極と電気的に接続される給電部を備えることを特徴とする請求項６に記載の超音波霧化装置。 The guide member includes a pair of rod-shaped bodies, one of the rod-shaped bodies includes a power feeding portion that is electrically connected to the first electrode, and the other rod-shaped body is electrically connected to the second electrode. The ultrasonic atomizer according to claim 6, further comprising a power feeding unit. 前記ガイド部材は、少なくとも外周面が導電性を有することを特徴とする請求項６又は７に記載の超音波霧化装置。 The ultrasonic atomizer according to claim 6 or 7, wherein at least an outer peripheral surface of the guide member has conductivity. 前記支持部材に、前記ガイド部材の外周面に電気的に接続される集電ブラシを備えたことを特徴とする請求項８に記載の超音波霧化装置。 The ultrasonic atomizer according to claim 8, wherein the support member includes a current collecting brush electrically connected to an outer peripheral surface of the guide member. 前記ガイド部材又は支持部材に、他方に弾性的に当接する当接部材を配置してなる請求項２〜９いずれか１記載の超音波霧化装置。 The ultrasonic atomizer according to claim 2, wherein a contact member that elastically contacts the other is disposed on the guide member or the support member.
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WO2013146639A1 (en) 2012-03-30 2013-10-03 住友化学株式会社 Atomizer
JP2014046302A (en) * 2012-09-04 2014-03-17 Hosiden Corp Atomizer
JP2016087559A (en) * 2014-11-06 2016-05-23 株式会社栄光社 Liquid spray device
JP2017213485A (en) * 2016-05-30 2017-12-07 シャープ株式会社 Atomizing device
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CN110528224B (en) * 2018-05-24 2022-09-27 青岛海尔洗涤电器有限公司 Clothes treatment device and control method thereof

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