JPH03224655A - Ultrasonic atomizer - Google Patents
Ultrasonic atomizerInfo
- Publication number
- JPH03224655A JPH03224655A JP2269190A JP2269190A JPH03224655A JP H03224655 A JPH03224655 A JP H03224655A JP 2269190 A JP2269190 A JP 2269190A JP 2269190 A JP2269190 A JP 2269190A JP H03224655 A JPH03224655 A JP H03224655A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- vibrator horn
- vibrator
- phone
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000889 atomisation Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 35
- 239000007921 spray Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003905 agrochemical Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- B05B17/0623—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 coupled with a vibrating horn
Landscapes
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
- Special Spraying Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、一般に、供給される液体燃料の如１液体物質
（本明細書では、液体物質とは液体燃料の如き液体は勿
論のこと、懸濁溶液等の液状物をも含むものとして用い
る。）を超音波振動を利用して霧化するための超音波霧
化装置に関し、特に、（イ）自動車、船外機、携帯用動
力装置、民生用ヒートポンプ装置の駆動装置等に用いら
れる内燃機関に適用される超音波霧化装置、 （ロ）ガ
スタービン用燃料噴射ノズル、 （ハ）工業用、営業用
及び家庭用のボイラ、加熱炉、暖房用バーナ、（ニ）工
業用液体噴霧器、例えば食品、医薬品、農薬、肥料等の
液状物の乾燥を目的とする乾燥用噴震器、調温、調湿用
スプレー 焼粉用噴霧器（セラミック造粒）、噴霧塗装
装置、反応促進器、及び（ホ）工業用以外の液体噴霧器
、例えば、農薬散布器、消毒液散布器等に好適に用いら
れる超音波霧化装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention generally relates to a liquid substance such as a supplied liquid fuel (in this specification, liquid substance refers to a liquid such as a liquid fuel, as well as a liquid substance such as a liquid fuel). Regarding ultrasonic atomization devices for atomizing liquids (including liquid substances such as suspended solutions) using ultrasonic vibration, in particular (a) automobiles, outboard motors, and portable power devices. , ultrasonic atomizers applied to internal combustion engines used in the drive devices of consumer heat pump devices, etc., (b) fuel injection nozzles for gas turbines, (c) boilers and heating furnaces for industrial, commercial and domestic use. , heating burners, (d) industrial liquid sprayers, such as drying sprayers for drying liquid materials such as foods, pharmaceuticals, agricultural chemicals, fertilizers, etc., temperature and humidity control sprays, baked powder sprayers (ceramic The present invention relates to an ultrasonic atomizer suitable for use in (e) non-industrial liquid sprayers, such as pesticide sprayers, disinfectant sprayers, etc.
［従来の技術］
超音波により液体物質を極めて小さな液滴粒径に霧化す
る超音波霧化装置として、例えば、シリンダ内に振動子
ホーンを配設し、シリンダと振動子ホーンとの間の先端
ノズル部から振動子ホーンの先端霧化面の全周に液を供
給し液体を微粒化する方式のものが知られている。[Prior Art] As an ultrasonic atomizer that uses ultrasonic waves to atomize a liquid substance into extremely small droplet sizes, for example, a vibrator horn is disposed within a cylinder, and a A system is known in which liquid is supplied from a tip nozzle portion to the entire circumference of the atomizing surface at the tip of a vibrator horn to atomize the liquid.
前記方式においては、従来、振動子ホーンのノード部に
固定用のフランジを一体に形成し、該フランジをシリン
ダに固定、支持する方法が一般的に行われている。また
、シリンダと振動子ホーンとの間に液体貯留部を形成し
、先端ノズル部から振動子ホーンの霧化面の全周に液を
供給している。Conventionally, in the above method, a fixing flange is formed integrally with the node portion of the vibrator horn, and the flange is fixed and supported on the cylinder. Further, a liquid storage portion is formed between the cylinder and the vibrator horn, and liquid is supplied from the tip nozzle portion to the entire circumference of the atomization surface of the vibrator horn.
［発明が解決しようとする課題］
振動子ホーンのノード部は、理論的には固定してもパワ
ーロスにはならない点が存在する。しかし、実際には、
前記固定用のフランジは点でなく幅を持つために、また
、同一材料でも音速が異なるために、同一寸法で振動子
ホーンを製作してもそれぞれのノード部の位置が異なっ
てくる。その結果、フランジ部に振動が生じその分だけ
振動系のパワーロスが生じるという問題を有している。[Problems to be Solved by the Invention] Theoretically, there is a point where the node portion of the vibrator horn does not cause power loss even if it is fixed. However, in reality,
Since the fixing flange has a width rather than a point, and also because the speed of sound differs even if the material is the same, the positions of the respective node portions will differ even if vibrator horns are manufactured with the same dimensions. As a result, there is a problem in that vibration occurs in the flange portion, resulting in a corresponding power loss in the vibration system.
また、フランジの切削加工に精度が要求されるためコス
ト高になると共に、フランジの締め付けを均一に行う必
要性があるため組立性が劣るという問題を有している。Further, there are problems in that the cutting process of the flange requires high precision, which increases the cost, and that the flange needs to be tightened uniformly, resulting in poor assembly performance.
さらに、シリンダと振動子ホーンとの間に液体貯留部を
形成しているために、シリンダと振動子ホーンとの間の
先端ノズル部のクリアランスを大きくすると、噴霧量の
安定性は良くなるが霧化面への液供給分布の均一性が低
下し、逆に、先端ノズル部のクリアランスを小さ（する
と、霧化面への液供給分布の均一性は良くなるが噴霧量
の安定性が低下するという問題を有している。先端ノズ
ル部のクリアランスを小さくすると、噴霧量の安定性が
低下する理由は、振動子ホーンの超音波振動により液体
貯留部内で気泡が発生し、この気泡が先端ノズル部から
噴出することに起因する。Furthermore, since a liquid reservoir is formed between the cylinder and the vibrator horn, increasing the clearance of the tip nozzle between the cylinder and the vibrator horn improves the stability of the spray amount, but The uniformity of the liquid supply distribution to the atomizing surface will decrease, and conversely, the clearance at the tip nozzle section will be reduced (this will improve the uniformity of the liquid supply distribution to the atomizing surface, but will reduce the stability of the spray amount) The reason why the stability of the spray amount decreases when the clearance at the tip nozzle is made smaller is that air bubbles are generated in the liquid reservoir due to the ultrasonic vibration of the vibrator horn, and these air bubbles are transferred to the tip nozzle. It is caused by gushing out from the body.
本発明の目的は、上記問題を解決するものであって、振
動系のパワーロスを軽減させると共に製作および組立を
容易に行うことができる超音波霧化装置を提供すること
である。SUMMARY OF THE INVENTION An object of the present invention is to provide an ultrasonic atomization device that solves the above problems and can reduce power loss in the vibration system and can be easily manufactured and assembled.
本発明の他の目的は、先端ノズル部のクリアランスを小
さくして霧化面への液供給分布の均−性詔よび噴霧量の
安定性を図ることができる超音波霧化装置を提供するこ
とである。Another object of the present invention is to provide an ultrasonic atomizer that can reduce the clearance of the tip nozzle part to improve the uniformity of the liquid supply distribution to the atomization surface and the stability of the spray amount. It is.
［課題を解決するための手段］
そのために本発明の超音波霧化装置は、シリンダ２と、
該シリンダ内に固定される振動子ホーン３と、該振動子
ホーンに超音波振動を付与せしめる電気・音響変換素子
４と、シリンダ２の外周に螺合されシリンダ２との間に
液供給路７を形成するスリーブ部材６と、シリンダ２お
よびスリーブ部材６間に形成される螺合部５および嵌合
部５ａと、前記振動子ホーンの先端に形成される霧化部
３ａと、該霧化部に液体を供給するノズル部７ ａ。[Means for solving the problem] For this purpose, the ultrasonic atomization device of the present invention includes a cylinder 2,
A vibrator horn 3 fixed in the cylinder, an electric/acoustic transducer 4 for imparting ultrasonic vibration to the vibrator horn, and a liquid supply path 7 screwed onto the outer periphery of the cylinder 2 and connected to the cylinder 2. a sleeve member 6 forming the cylinder 2 and the sleeve member 6, a threaded part 5 and a fitting part 5a formed between the cylinder 2 and the sleeve member 6, an atomizing part 3a formed at the tip of the vibrator horn, and the atomizing part Nozzle section 7a that supplies liquid to.
と、前記振動子ホーンの２箇所のノード部９ａ１９ｂと
前記シリンダとの間に設けられる２個の弾性体１０．１
１とを有し、該弾性体により振動子ホーンをシリンダに
固定、支持することを特徴とする。and two elastic bodies 10.1 provided between the two node portions 9a19b of the vibrator horn and the cylinder.
1, and the vibrator horn is fixed and supported on the cylinder by the elastic body.
なお、上記構成に付加した番号は図面と対比させるため
のものであり、これにより本発明の構成が何ら限定され
るものではない。Note that the numbers added to the above configurations are for comparison with the drawings, and the configurations of the present invention are not limited thereby.
［作用］
本発明においては、振動子ホーンが２箇所のノード部で
弾性体で固定されるため、振動子ホーンをシリンダに柔
軟性を持たせて固定、支持させることができ、儂動子ホ
ーンとシリンダとの間怠性が容易に出せると共に、スリ
ーブ部材はシリンダに嵌合部において嵌合されるため、
振動子ホーンとスリーブ部材との間怠性が容易に出せる
。また、液供給路がシリンダとスリーブ部材との間に形
成され、振動子ホーンの振動による影響がないため、従
来のように気泡が発生せず、そのクリアランスを極めて
小さくしても噴霧量は安定する。[Function] In the present invention, since the vibrator horn is fixed with elastic bodies at two node portions, the vibrator horn can be fixed and supported by the cylinder with flexibility, and the vibrator horn can be fixed and supported by the cylinder with flexibility. Since the sleeve member is fitted to the cylinder at the fitting part, the sleeve member is fitted to the cylinder at the fitting part.
The lag between the vibrator horn and the sleeve member can be easily achieved. In addition, since the liquid supply path is formed between the cylinder and the sleeve member and is not affected by the vibration of the vibrator horn, air bubbles do not occur as in the conventional case, and the spray amount remains stable even if the clearance is extremely small. do.
［実施例コ 以下、本発明の実施例を図面を参照しつつ説明する。[Example code] Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の超音波霧化装置の１実施例を示す一部
断面図、第２図は第１図の■−■線に沿う断面図である
。FIG. 1 is a partial cross-sectional view showing one embodiment of the ultrasonic atomization device of the present invention, and FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG.
超音波霧化装置１は、シリンダ２と、シリンダ２内に固
定、支持される振動子ホーン３と、振動子ホーン３に超
音波振動を付与せしめる電気・音響変換素子４と、シリ
ンダ２の外周に平坦な嵌合部５ａにおいて嵌合され、螺
合部５で螺合されるスリーブ部材６から構成される。シ
リンダ２とスリーブ部材６との間には、環状の液供給路
７が形成され、該液供給路７に液供給管８から液体が供
給される。The ultrasonic atomizer 1 includes a cylinder 2, a vibrator horn 3 fixed and supported within the cylinder 2, an electric/acoustic transducer 4 that applies ultrasonic vibration to the vibrator horn 3, and an outer circumference of the cylinder 2. It is comprised of a sleeve member 6 that is fitted at a flat fitting portion 5a and screwed together at a threaded portion 5. An annular liquid supply path 7 is formed between the cylinder 2 and the sleeve member 6, and liquid is supplied to the liquid supply path 7 from a liquid supply pipe 8.
振動子ホーン３の先端には霧化部３ａが形成される。こ
の霧化部３ａの形状は、図に示す半球形状の他、拡径形
状、バット形状が採用される。また、シリンダ２とスリ
ーブ部材６との間には環状のノズル部７ａが形成され、
該ノズル部７ａから液体が霧化部３ａに供給され超音波
振動により微細液滴に霧化される。このように、液供給
路７がシリンダ２とスリーブ部材６との間に形成され、
振動子ホーン３の振動による影響がないため、そのクリ
アランスを０．０５〜０．１■璽程度と極めて小さくし
ても従来のように気泡が発生することがない。An atomizing section 3a is formed at the tip of the vibrator horn 3. The shape of the atomizing portion 3a may be a hemispherical shape as shown in the figure, an enlarged diameter shape, or a butt shape. Further, an annular nozzle portion 7a is formed between the cylinder 2 and the sleeve member 6,
The liquid is supplied from the nozzle section 7a to the atomizing section 3a and is atomized into fine droplets by ultrasonic vibration. In this way, the liquid supply path 7 is formed between the cylinder 2 and the sleeve member 6,
Since there is no influence from the vibration of the vibrator horn 3, even if the clearance is extremely small, on the order of 0.05 to 0.1 cm, bubbles will not be generated as in the conventional case.
振動子ホーン３には、振動しない部分すなわち２箇所の
ノード部９ａ１９ｂがあり、シリンダ２の内周面には、
該ノード部９ａｓ９ｂに対向して溝が形成され、該溝内
にＯリングからなる弾性体１０１１１が嵌合されている
。従って、振動子ホーン３をシリンダ２内に挿入したと
き、振動子ホーン３が弾性体１０．１１により固定支持
されると共に、振動子ホーン３とシリンダ２との開広性
が容易に出せることになる。また、スリーブ部材６は、
シリンダ２に嵌合部５ａにおいて嵌合されるため、振動
子ホーン３とスリーブ部材６との開広性が容易に出せる
。The vibrator horn 3 has a portion that does not vibrate, that is, two node portions 9a19b, and the inner circumferential surface of the cylinder 2 has two node portions 9a19b.
A groove is formed facing the node portion 9as9b, and an elastic body 10111 made of an O-ring is fitted into the groove. Therefore, when the vibrator horn 3 is inserted into the cylinder 2, the vibrator horn 3 is fixedly supported by the elastic body 10, 11, and the vibrator horn 3 and the cylinder 2 can be easily expanded. Become. Further, the sleeve member 6 is
Since the fitting portion 5a is fitted into the cylinder 2, the vibrator horn 3 and the sleeve member 6 can be easily opened.
［発明の効果コ
以上のように本発明によれば、振動子ホーンが２箇所の
ノード部で弾性体で固定されるため、振動子ホーンをシ
リンダに柔軟性を持たせて固定、支持させることができ
、振動子ホーンとシリンダとの開広性が容易に出せると
共に、スリーブ部材はシリンダに嵌合部において嵌合さ
れるため、振動子ホーンとスリーブ部材との開広性が容
易に出せる。従って、従来のようにフランジによりリジ
ッドに固定する場合と比較して、振動子ホーンとシリン
ダおよびスリーブ部材の開広性が容易に出せるので、振
動子ホーンの切削加工および組立を容易に行うことがで
きると共に、振動系のパワーロスを半分程度に軽減させ
ることができる。[Effects of the Invention] As described above, according to the present invention, since the vibrator horn is fixed by elastic bodies at two node portions, the vibrator horn can be fixed and supported by the cylinder with flexibility. This allows for easy expansion between the vibrator horn and the cylinder, and since the sleeve member is fitted into the cylinder at the fitting portion, the expansion between the vibrator horn and the sleeve member can be easily achieved. Therefore, compared to the conventional case where the vibrator horn is fixed rigidly with a flange, the vibrator horn, cylinder, and sleeve member can be easily expanded, so cutting and assembling the vibrator horn can be easily performed. At the same time, the power loss of the vibration system can be reduced by about half.
また、液供給路がシリンダとスリーブ部材との間に形成
され、振動子ホーンの振動による影響がないため、従来
のように気泡が発生せず、そのクリアランスを極めて小
さくしても噴霧量が安定する。従って、先端ノズル部の
クリアランスを小さくして霧化面への液供給分布の均一
性および噴霧量の安定性を図ることができる。In addition, since the liquid supply path is formed between the cylinder and the sleeve member and is not affected by the vibration of the vibrator horn, air bubbles do not occur as in the conventional case, and the spray amount remains stable even if the clearance is extremely small. do. Therefore, by reducing the clearance of the tip nozzle part, uniformity of liquid supply distribution to the atomization surface and stability of the spray amount can be achieved.
第１図は本発明の超音波霧化装置の１実施例を示す一部
断面図、第２図は第１図の■−■線に沿う断面図である
。
１・・・超音波霧化装置、２・・・シリンダ、３・・・
振動子ホーン、３ａ・・・霧化部、４・・・電気・音響
変換素子、５・・・螺合部、５ａ嵌合部、６・・・スリ
ーブ部材、７・・・液供給路、７ａ・・・ノズル部、９
ａ％９ｂ・・・）−ド部、
１０、
１・・・弾性体。
出
願
人
東燃株式会社FIG. 1 is a partial cross-sectional view showing one embodiment of the ultrasonic atomization device of the present invention, and FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1... Ultrasonic atomization device, 2... Cylinder, 3...
Vibrator horn, 3a...Atomization part, 4...Electric/acoustic conversion element, 5...Threaded part, 5a fitting part, 6...Sleeve member, 7...Liquid supply path, 7a... Nozzle part, 9
a%9b...)-do part, 10, 1... Elastic body. Applicant Tonen Corporation
Claims (1)
ーンと、該振動子ホーンに超音波振動を付与せしめる電
気・音響変換素子と、前記シリンダの外周に螺合されシ
リンダとの間に液供給路を形成するスリーブ部材と、前
記シリンダおよびスリーブ部材間に形成される螺合部お
よび嵌合部と、前記振動子ホーンの先端に形成される霧
化部と、該霧化部に液体を供給するノズル部と、前記振
動子ホーンの２箇所のノード部と前記シリンダとの間に
設けられる２個の弾性体とを有し、該弾性体により振動
子ホーンをシリンダに固定、支持することを特徴とする
超音波霧化装置。(1) A cylinder, a vibrator horn fixed in the cylinder, an electric/acoustic transducer that applies ultrasonic vibration to the vibrator horn, and a liquid that is screwed onto the outer periphery of the cylinder and is connected to the cylinder. A sleeve member forming a supply path, a threaded part and a fitting part formed between the cylinder and the sleeve member, an atomizing part formed at the tip of the vibrator horn, and a liquid being supplied to the atomizing part. The vibrator horn is provided with a nozzle portion to be supplied, and two elastic bodies provided between two node portions of the vibrator horn and the cylinder, and the vibrator horn is fixed and supported on the cylinder by the elastic bodies. An ultrasonic atomization device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2269190A JPH03224655A (en) | 1990-01-31 | 1990-01-31 | Ultrasonic atomizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2269190A JPH03224655A (en) | 1990-01-31 | 1990-01-31 | Ultrasonic atomizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03224655A true JPH03224655A (en) | 1991-10-03 |
Family
ID=12089901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2269190A Pending JPH03224655A (en) | 1990-01-31 | 1990-01-31 | Ultrasonic atomizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03224655A (en) |
-
1990
- 1990-01-31 JP JP2269190A patent/JPH03224655A/en active Pending
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