JPS631476A - Liquid atomizing apparatus - Google Patents
Liquid atomizing apparatusInfo
- Publication number
- JPS631476A JPS631476A JP14563686A JP14563686A JPS631476A JP S631476 A JPS631476 A JP S631476A JP 14563686 A JP14563686 A JP 14563686A JP 14563686 A JP14563686 A JP 14563686A JP S631476 A JPS631476 A JP S631476A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- vibrating body
- inner diameter
- vibrator
- diameter hole
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 37
- 238000009688 liquid atomisation Methods 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000000446 fuel Substances 0.000 abstract description 32
- 230000037431 insertion Effects 0.000 abstract 2
- 238000003780 insertion Methods 0.000 abstract 2
- 238000000889 atomisation Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 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
- B05B17/063—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 having an internal channel for supplying the liquid or other fluent material
-
- 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
- Special Spraying Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、例えば内燃機関の燃料霧化等に使用される液
体霧化装駈に関し，軸方向に貫通する内径孔の両端を液
体搬送路に連続させた振動体と，この振動体の外側に同
軸状に配鐙されて超音波振動を与えるべく結合された超
音波振動子とを備えることにより、液体搬送路の途中に
簡単に中継ぎ挿入でき、しかも液体に対して流動障害を
及ぼすことなく、振動体の内径孔の内壁面に沿って流れ
る液体を、効率良く霧化できるようにしたものである．
従来の技術
エンジン制御のエレクトロニクス化により、電子燃料噴
射方式（以下ＥＦＩシステムと称する）が普及してきて
いる．現在，最も多く用いられているＥＦＩシステムと
しては、第７図に示すように，各エンジンシリンダｌ毎
にフユーエルインジェクタ２を配鐙し，このフユーエル
インジエクタ２に対して、フユーエルタンク３、フユー
エルボンプ４及びフユーエルフィルタ５等通して、矢印
ａのように燃料を送り込み、フユーエルインジェクタ２
から各エンジンシリンダｌに対して、直接に、霧化した
燃料を噴射するシステムがある．第７図において、６は
コントロールユニット，７はエアクリーナ、８はスロッ
トルチャンバ，９はスロットルバルブ、１０はインテー
クマニフオールド、１１はエアレギュレータ、１２は温
度センサ、１３は水温センサ、ｌ４はスタートスイッチ
、１５はバッテリ、１６はプレツシャレギュレータ、１
７はディストリビュータである．
第７図に示すＥＦＩシステムにおいては、フユーエルイ
ンジェクタ２から各エンジンシリンダ１に対して、直接
に、霧化した燃料を噴射するので、燃費効率が大幅に改
善できる．しかし、各エンジンシリンダ１毎にフユーエ
ルインジェクタ２を備える必要があるので、システムシ
ステム全体が複雑になり、非常にコスミが高くなるとい
う難点があった．
そこで、上述のシステムに換えて，シングル，ポイント
．インジェクション．システム（以下ＳＰＩシステムと
称する）が検討されている．第８図はＳＰＩシステムの
要部を示す図で、一個のインジェクション１８を用い、
その下流にスロットルバルブｌ９を配置し、インテーク
マニフオールド１０を通して各エンジンシリンダへ混合
気を供給するものであり、システムが簡略化され、大幅
なコストダウンが可俺になる．発明が解決しようとする
問題点
ところが、ＳＰＩシステムでは、インジェクション１８
により霧化された燃料の搬送路が長くなるため、搬送′
ｉ７壁に燃料が付着して膜流を形成してしまう。このた
め、燃費が悪くなるという問題点があった．
燃料の霧化を促進させ、燃焼室に均一な混合気を供給す
る従来技術として、特開昭５１−１４３１３７号公報に
開示された技術が知られている．この従来技術は、中空
筒状の超音波振動片により、液体燃料を霧化するととも
に，空気と混合せしめ、均一な混合気を機関の燃焼室に
供給するようにしたものである．ａ音波振動片の配置に
関しては、燃料流路内部に傾斜して直接に配置するか、
または、超音波振動片の内周側壁が燃料流路の内周壁に
沿うように配置し，ホーン等の超音波振動拡大部を通し
て、外部から駆動する等の構造が開示されている．
発明が解決しようとする問題点
しかしながら，特開昭５１−１４３１３７号に開示され
るように、超音波振動片を燃料流路内部に傾斜して直接
に配置する構造では、超音波振動片が燃料の流動障害と
なる．また．ａｆ波振動片を、内周側壁が燃料流路の内
周壁に沿うように配惹し、ホーン等の超音波振動拡大部
を通して、外部から駆動する構造では，構造が複雑化し
、燃料流路に対する取付けが面倒になる等の問題点を生
じる．
問題点を解決するための手段
上述する従来の問題点を解決するため，本発明は、液体
搬送路の途中に設けられて液体を霧化する液体霧化装置
において、軸方向に貫通する内径孔の両端を前記液体搬
送路に，１！続させた振動体と、この振動体の外側に同
軸状に配訛されて超音波振動を与えるべく結合された超
音波振動子とを備えることを特徴とする．
作用
本発明に係る液体霧化装鐙において、超音波振動子を駆
動すると、その超音波振動が振動体に伝達される．振動
体は軸方向に貫通して設けた内径孔の両端を液体搬送路
に連続させてあり、液体搬送路から内径孔に流入した燃
料等の液体は、内径孔の内壁面に触れて、その超音波振
動によって霧化される．液体の大部分は振動体に設けた
内径孔内を軸方向に流通するから，液体に対する流動抵
抗は、従来より著しく小さくなる．また、振動体は軸方
向に貫通する内径孔を有する中空状となっていて、この
振動体の外側に超音波振動子を同軸に配置してあるから
、中空管状に形成される燃料搬送路に対して，簡単に中
継ぎ挿入できる．更に、振動体の内壁全周が超音波振動
面となるので、振動体の内壁面全面で液体を霧化でき、
霧化効率が高くなる．
実施例
第１図は本発明に係る液体霧化装置を組込んだＳＰＩシ
ステム、第２図は同じく要部の拡大断面図を示し，１個
のインジェクションｌ８の下流にスロットルバルブ１９
を配置すると共に、スロットルバルブｌ９からインテー
クマニホールド１０に至る配管２０、２１の途中に、本
発明に係る液体霧化器Ａを中継ぎ挿入してある．
第３図は液体霧化器Ａの正面断面図、第４図は第３図Ａ
Ｉ−ＡＩ線上における断面図である．２２は軸方向に貫
通する内径孔２２１を有する中空状の振動体、２３はこ
の振動体２２の外側に同軸状に配こされ，かつ、振動体
２２に超音波振動を与えるべく結合ざれた超音波振動子
である．振動体２２は金属材料でなる２つの中空部材２
２２ ． ２２３を軸方向にネジ結合させて組立られて
いる．中空部材２２２の一端部の外周部にはネジ２２４
を形成し、このネジ２２４の後方に胴部２２５を形成し
てある．中空部材２２３は、中空部材２２２とネジ結合
している端部にフランジ２２Ｂを形成すると共に、内径
孔２２１の内壁面に、軸方向に沿って突起２２７の群を
形成し、更に端部寄りの内周面に外部配管との結合部と
なるネジ２２８を形成してある。突起２２７の群は例え
ばネジ状に形成する．そして、中空部材２２２の胴部２
２５の外周部に超音波振動子２３及び金属材料でなる環
体２４を嵌合させた上で、ネジ２２４にナー２ト２５を
ネジ結合させることにより、環体２４及びナット２５と
フランジ２２６との間で、超音波振動子２３を締付け固
定してある．
超音波振動子２３は、２つの圧電振動子２３ｌ，２３２
を、金属板２３３の両面側に接合し、中心部に振動体２
２の旧部２２５を貫通させる中心孔２３４を貫通して設
けたランジュバン型構造となっている．２つの圧電振動
子２３１ ， ２３２は円環状となっていて，その厚み
方向の両面に７ｔｔ極（２３１ａ、２３ｌｂ）、（ ２
３２ａ、２３２ｂ）を形成し、電極２３１ａ、２３２ａ
を金属板２３３に面接合させてある．これらの圧電振動
子２３１ ． ２３２は接合方向の縦振動モードを発生
するように分極されている．
振動体２２に対する超音波振動子２３の組込みに当って
は、中空部材２２２の胴部２２５の外周部に超音波振動
子２３及び環体２４を嵌合させ、電極２３ｌｂをフラン
ジ２２８に、また、電極２３２ｂを環体２４にそれぞれ
面接触させ、ネジ２２４にナット２５をネジ結合させる
ことにより、環体２４及びナット２５とフランジ２２６
との間で，ａ音波振動子２３を締付け固定してある．振
動体２２及び超音波振動子２３の形状寸法等は、フラン
ジ２２６を節として、その左右に入／４またはその整数
倍の縦振動系が形成されるように定められている。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a liquid atomizer used, for example, for fuel atomization of an internal combustion engine, in which both ends of an axially penetrating inner diameter hole are connected to a liquid conveyance path. By comprising a vibrating body and an ultrasonic vibrator coaxially placed on the outside of the vibrating body and coupled to give ultrasonic vibration, it is possible to easily insert the transducer in the middle of the liquid conveyance path. This device is designed to efficiently atomize the liquid flowing along the inner wall surface of the inner diameter hole of the vibrating body without causing flow obstruction to the liquid. BACKGROUND ART Due to the electronicization of engine control, electronic fuel injection systems (hereinafter referred to as EFI systems) have become widespread. As shown in Fig. 7, the most commonly used EFI system at present has a fuel injector 2 for each engine cylinder, and a fuel tank 3 for this fuel injector 2. , through the fuel pump 4, fuel filter 5, etc., as shown by arrow a, and inject the fuel into the fuel injector 2.
There is a system that injects atomized fuel directly into each engine cylinder. In FIG. 7, 6 is a control unit, 7 is an air cleaner, 8 is a throttle chamber, 9 is a throttle valve, 10 is an intake manifold, 11 is an air regulator, 12 is a temperature sensor, 13 is a water temperature sensor, l4 is a start switch, 15 is a battery, 16 is a pressure regulator, 1
7 is the distributor. In the EFI system shown in FIG. 7, atomized fuel is injected directly from the fuel injector 2 to each engine cylinder 1, so fuel efficiency can be greatly improved. However, since it is necessary to provide a fuel injector 2 for each engine cylinder 1, the entire system becomes complicated and the cost becomes extremely high. Therefore, instead of the above system, we decided to use a single point system. injection. system (hereinafter referred to as the SPI system) is being considered. FIG. 8 is a diagram showing the main parts of the SPI system, using one injection 18,
The throttle valve 19 is placed downstream, and the air-fuel mixture is supplied to each engine cylinder through the intake manifold 10, which simplifies the system and allows for significant cost reductions. Problems to be Solved by the Invention However, in the SPI system, injection 18
Because the transport path for the atomized fuel becomes longer, the transport
Fuel adheres to the i7 wall and forms a film flow. As a result, there was a problem of poor fuel efficiency. As a conventional technique for promoting atomization of fuel and supplying a uniform air-fuel mixture to a combustion chamber, a technique disclosed in Japanese Patent Application Laid-open No. 143137/1983 is known. This conventional technology uses a hollow cylindrical ultrasonic vibrating element to atomize liquid fuel and mix it with air, supplying a uniform air-fuel mixture to the combustion chamber of the engine. a Regarding the placement of the sonic vibration piece, either place it directly inside the fuel flow path at an angle, or
Alternatively, a structure has been disclosed in which the inner circumferential side wall of the ultrasonic vibrating piece is arranged along the inner circumferential wall of the fuel flow path and is driven from the outside through an ultrasonic vibration amplifying part such as a horn. Problems to be Solved by the Invention However, as disclosed in JP-A-51-143137, in a structure in which the ultrasonic vibrating piece is arranged directly at an angle inside the fuel flow path, the ultrasonic vibrating piece does not interfere with the fuel flow path. It becomes a flow obstruction. Also. In a structure in which the AF wave vibrating element is arranged so that the inner circumferential side wall is along the inner circumferential wall of the fuel flow path and is driven from the outside through an ultrasonic vibration amplifying part such as a horn, the structure is complicated and This causes problems such as troublesome installation. Means for Solving the Problems In order to solve the above-mentioned conventional problems, the present invention provides a liquid atomization device that is installed in the middle of a liquid conveyance path and that atomizes liquid. Both ends of 1! are connected to the liquid transport path, 1! The ultrasonic transducer is characterized by comprising a vibrating body that is connected to the vibrating body, and an ultrasonic vibrator that is coaxially disposed outside the vibrating body and coupled to give ultrasonic vibrations. Operation In the liquid atomization stirrup according to the present invention, when the ultrasonic vibrator is driven, the ultrasonic vibration is transmitted to the vibrating body. The vibrating body has an inner diameter hole that penetrates in the axial direction, and both ends thereof are connected to the liquid conveyance path, and liquid such as fuel that flows into the inner diameter hole from the liquid conveyance path touches the inner wall surface of the inner diameter hole and It is atomized by ultrasonic vibration. Since most of the liquid flows in the axial direction within the inner diameter hole provided in the vibrating body, the flow resistance to the liquid is significantly smaller than before. In addition, the vibrating body is hollow with an inner diameter hole penetrating in the axial direction, and the ultrasonic vibrator is coaxially arranged on the outside of the vibrating body, so that the fuel conveyance path formed in the hollow tube shape is On the other hand, it is easy to insert a relay. Furthermore, since the entire circumference of the inner wall of the vibrating body becomes an ultrasonic vibration surface, the liquid can be atomized over the entire inner wall of the vibrating body.
Atomization efficiency increases. Embodiment FIG. 1 shows an SPI system incorporating a liquid atomization device according to the present invention, and FIG. 2 shows an enlarged cross-sectional view of the main parts, in which a throttle valve 19 is installed downstream of one injection l8.
At the same time, a liquid atomizer A according to the present invention is inserted in the middle of the pipes 20 and 21 from the throttle valve l9 to the intake manifold 10. Figure 3 is a front sectional view of liquid atomizer A, and Figure 4 is Figure 3 A.
It is a cross-sectional view on the I-AI line. 22 is a hollow vibrating body having an inner diameter hole 221 penetrating in the axial direction, and 23 is an ultrasonic body arranged coaxially outside this vibrating body 22 and coupled to give ultrasonic vibration to the vibrating body 22. It is a sound wave vibrator. The vibrating body 22 includes two hollow members 2 made of metal material.
22. 223 is assembled by screwing them together in the axial direction. A screw 224 is attached to the outer periphery of one end of the hollow member 222.
A body portion 225 is formed behind the screw 224. The hollow member 223 has a flange 22B formed at the end screwed to the hollow member 222, a group of protrusions 227 along the axial direction on the inner wall surface of the inner diameter hole 221, and a group of protrusions 227 near the end. A screw 228 is formed on the inner circumferential surface to serve as a connecting portion to external piping. The group of protrusions 227 is formed into a screw shape, for example. Then, the body 2 of the hollow member 222
By fitting the ultrasonic vibrator 23 and the ring body 24 made of a metal material to the outer periphery of the nut 25, and then screwing the nut 25 to the screw 224, the ring body 24, the nut 25, and the flange 226 are connected. The ultrasonic vibrator 23 is tightened and fixed between the two. The ultrasonic transducer 23 includes two piezoelectric transducers 23l and 232.
are bonded to both sides of the metal plate 233, and the vibrating body 2 is placed in the center.
It has a Langevin type structure in which a central hole 234 is penetrated through the old part 225 of 2. The two piezoelectric vibrators 231 and 232 have an annular shape, and have 7tt poles (231a, 23lb) and (2
32a, 232b), and electrodes 231a, 232a
is connected face-to-face to a metal plate 233. These piezoelectric vibrators 231. 232 is polarized to generate a longitudinal vibration mode in the welding direction. In assembling the ultrasonic vibrator 23 into the vibrating body 22, the ultrasonic vibrator 23 and ring body 24 are fitted to the outer circumference of the body 225 of the hollow member 222, and the electrode 23lb is fitted to the flange 228. By bringing the electrodes 232b into surface contact with the annular body 24 and by screwing the nut 25 to the screw 224, the annular body 24 and the nut 25 are connected to the flange 226.
A sonic vibrator 23 is tightened and fixed between the . The shapes and dimensions of the vibrating body 22 and the ultrasonic vibrator 23 are determined so that a longitudinal vibration system of /4 or an integral multiple thereof is formed on the left and right sides of the flange 226, with the flange 226 as a node.
液体霧化器Ａは、第１図及び第２図に示すように，配管
２０の端面に対して、ネジ等の結合具２６によってフラ
ンジ２２６を取付け固定すると共に、配管２１の端部を
内径部に設けたネジ２２８にネジ結合させることにより
、内径孔２２１が配管２０、２１の内径孔２０１ ．
２１１に連続するようにして、配管２０−２１間に中継
ぎ種入させてある．
振動体２２と金居板２３３との間に電圧を印加して超音
波振動子２３を駆動すると、超音波振動子２３を構成す
る圧電振動子２３１ ． ２３２に縦振動モードが発生
し、第５図に示すように、振動体２２がフランジ２２６
を節にして、その左右にλ／４またはその整数倍の高次
モードで，その全周に亘って屈曲振動をし、超音波が放
射される．従って、振動体２２の内径孔２２１を流れる
際にその内壁面に付着して膜流化した燃料は、振動体２
２の内径部２２１の内壁面で，超音波振動を受けて霧化
される．
実施例では、内径孔２２１の内壁面に波状の突起２２７
を設けてあるので、霧化表面積が拡大されると共に、突
起２２７が縦振動により袖方向に前後し、燃料が内壁面
に付着するのをはじき飛ばすように作用する．このため
，霧化効率が向上する．
０′Ｓ６図は本発明に係る液体霧化装置の別の実施例を
示している．この実施例では、振動体２２は、超音波振
動子２３を同軸支持する第１の振動体２７と、軸方向に
貫通する内径孔２８１を有し第１の振動体２７の内部に
同軸状に結合された第２の振動体２８とを備える．第１
の振動体２７は，超音波振動子２３を同軸状に支持する
胴部２７１と，超音波振動子２３の一端面を受けるフラ
ンジ２７２とを有し，フランジ２７２と胴部２７１に結
合される金属環体２４及びナット２５との間で超音波振
動子２３を締付け固定してある．第２の振動体２８は，
ｇ肉中空筒状に形成され、軸方向の一端部を第２の振動
体２７の軸方向の一端部に接合してある．
この実施例の場合も、超音波振動子２３を駆動すると、
超音波振動子２３を構成する圧電振動子２３１ ， ２
３２に縦振動モードが発生し、振動体２７がフランジ２
７２を節にして，その左右に入／４またはその整数倍の
高次モードで屈曲振動をする．この超音波振動は第１の
振動体２７から第２の振動体２８に伝達される．従って
、第２の振動体２Ｂの内径孔２８１の内壁面に付着した
燃料の膜流は、第２の振動体２８の内径部２８１の内壁
面の超音波振動を受けて霧化される．
発明の効果
以上述べたように、本発明に係る液体霧化装置は、掖体
搬送路の途中に設けられて液体を霧化する液体霧化装４
において，軸方向に貫通する内径孔の両端を前記液体搬
送路の内部にＪ！ｌ続させた振動体と、この振動体の外
側に同軸状に配置されて超音波振動を与えるべく結合さ
れた超音波振動子とを備えることを特徴とするから，液
体搬送路の途中に簡単に中継ぎ挿入でき、しかも液体に
対して！Ｒ．動障害を及ぼすことなく，振動体の内径孔
の内壁面に沿って流れる液体を、効率良く霧化できる液
体霧化装置を提供することができる．As shown in FIGS. 1 and 2, in the liquid atomizer A, a flange 226 is attached and fixed to the end surface of the pipe 20 using a coupling device 26 such as a screw, and the end of the pipe 21 is connected to the inner diameter part. By screwing the inner diameter hole 221 into the inner diameter hole 201.
An intermediate seed is inserted between piping 20 and 21 so that it is continuous with 211. When a voltage is applied between the vibrating body 22 and the metal plate 233 to drive the ultrasonic vibrator 23, the piezoelectric vibrators 231 . A longitudinal vibration mode occurs at 232, and as shown in FIG.
is a node, and on the left and right of the node, bending vibration occurs over the entire circumference in a higher-order mode of λ/4 or an integer multiple thereof, and an ultrasonic wave is emitted. Therefore, when the fuel flows through the inner diameter hole 221 of the vibrating body 22, it adheres to the inner wall surface of the vibrating body 22 and becomes a film flow.
It is atomized by ultrasonic vibration on the inner wall surface of the inner diameter part 221 of No. 2. In the embodiment, a wavy protrusion 227 is provided on the inner wall surface of the inner diameter hole 221.
Since the atomization surface area is expanded, the protrusions 227 move back and forth in the sleeve direction due to longitudinal vibration, and act to repel fuel adhering to the inner wall surface. This improves atomization efficiency. Figure 0'S6 shows another embodiment of the liquid atomization device according to the present invention. In this embodiment, the vibrating body 22 includes a first vibrating body 27 that coaxially supports the ultrasonic vibrator 23, and an inner diameter hole 281 that penetrates in the axial direction. and a coupled second vibrating body 28. 1st
The vibrating body 27 has a body 271 that coaxially supports the ultrasonic vibrator 23 and a flange 272 that receives one end surface of the ultrasonic vibrator 23. The ultrasonic vibrator 23 is fastened and fixed between the ring body 24 and the nut 25. The second vibrating body 28 is
(g) It is formed into a hollow cylindrical shape, and one end in the axial direction is joined to one end in the axial direction of the second vibrating body 27. Also in this embodiment, when the ultrasonic transducer 23 is driven,
Piezoelectric vibrators 231 and 2 forming the ultrasonic vibrator 23
32, a longitudinal vibration mode occurs, and the vibrating body 27 moves to the flange 2.
72 is the node, and bending vibration occurs in a higher-order mode of /4 or an integer multiple thereof on the left and right sides. This ultrasonic vibration is transmitted from the first vibrating body 27 to the second vibrating body 28. Therefore, the film flow of fuel adhering to the inner wall surface of the inner diameter hole 281 of the second vibrating body 2B is atomized by the ultrasonic vibration of the inner wall surface of the inner diameter portion 281 of the second vibrating body 28. Effects of the Invention As described above, the liquid atomization device according to the present invention includes a liquid atomization device 4 that is provided in the middle of the container conveyance path and atomizes the liquid.
In J!, both ends of the inner diameter hole penetrating in the axial direction are placed inside the liquid conveyance path. The ultrasonic vibrator is arranged coaxially outside the vibrating body and is coupled to give ultrasonic vibrations. You can insert a relay into the tank, and it can also be used with liquids! R. It is possible to provide a liquid atomization device that can efficiently atomize the liquid flowing along the inner wall surface of the inner diameter hole of the vibrating body without causing any dynamic disturbance.
第１図は本発明に係る液体霧化装置を組込んだＳＰＩシ
ステム、第２図は同じく要部の拡大断面図，第３図は本
発明に係る液体霧化装置の部分破断面図、第４図は第３
図Ａ，−Ａ，線上における断面図，第５図は本発明に係
る液体霧化装置の振動モードを説明する図，第６図は本
発明に係る液体霧化装欝の別の実施例における断面図、
第７図は内燃ａ関の従来のＥＦＩシステムを示す図、第
８図は従来のＳＰＩシステムを示す図である．２０、２
１●●●配管
２２・・・振動体
２３・・・超音波振動子
第３図
第４図
第５図
第６図
第７図
第８図FIG. 1 is an SPI system incorporating a liquid atomizer according to the present invention, FIG. 2 is an enlarged cross-sectional view of the main parts, and FIG. Figure 4 is the third
Figures A and -A are cross-sectional views on the line, Figure 5 is a diagram explaining the vibration mode of the liquid atomizing device according to the present invention, and Figure 6 is a cross-sectional view of another embodiment of the liquid atomizing device according to the present invention. figure,
FIG. 7 is a diagram showing a conventional EFI system for an internal combustion engine, and FIG. 8 is a diagram showing a conventional SPI system. 20, 2
1●●●Piping 22... Vibrating body 23... Ultrasonic vibrator Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8
Claims (7)
体霧化装置において、軸方向に貫通する内径孔の両端を
前記液体搬送路の内部に連続させた振動体と、この振動
体の外側に同軸状に配置されて超音波振動を与えるべく
結合された超音波振動子とを備えることを特徴とする液
体霧化装置。(1) In a liquid atomization device that is installed in the middle of a liquid conveyance path and atomizes liquid, a vibrating body having an inner diameter hole penetrating in the axial direction and having both ends continuous with the inside of the liquid conveyance path, and this vibrating body and an ultrasonic vibrator disposed coaxially on the outside of the liquid atomizer and coupled to apply ultrasonic vibration.
と、前記超音波振動子の一端面を受けるフランジとを有
し、前記フランジと前記胴部に結合されるナットとの間
で前記超音波振動子を締付け固定したことを特徴とする
特許請求の範囲第１項に記載の液体霧化装置。(2) The vibrating body has a body that supports the ultrasonic vibrator, and a flange that receives one end surface of the ultrasonic vibrator, and a space between the flange and a nut coupled to the body. 2. The liquid atomization device according to claim 1, wherein the ultrasonic vibrator is tightened and fixed.
とを特徴とする特許請求の範囲第１項または第２項に記
載の液体霧化装置。(3) The liquid atomization device according to claim 1 or 2, wherein the vibrating body has a protrusion on the inner wall surface of the inner diameter hole.
第１の振動体と、軸方向に貫通する内径孔を有し前記第
１の振動体の内部に同軸状に結合された第２の振動体と
を備えてなることを特徴とする特許請求の範囲第１項に
記載の液体霧化装置。(4) The vibrating body includes a first vibrating body that coaxially supports the ultrasonic vibrator, and a first vibrating body that has an inner diameter hole penetrating in the axial direction and is coaxially coupled inside the first vibrating body. 2. The liquid atomization device according to claim 1, further comprising: two vibrating bodies.
に支持する胴部と、前記超音波振動子の一端面を受ける
フランジとを有し、前記フランジと前記胴部に結合され
るナットの間で前記超音波振動子を締付け固定したこと
を特徴とする特許請求の範囲第４項に記載の液体霧化装
置。(5) The first vibrating body has a body that coaxially supports the ultrasonic vibrator, and a flange that receives one end surface of the ultrasonic vibrator, and is coupled to the flange and the body. 5. The liquid atomization device according to claim 4, wherein the ultrasonic vibrator is tightened and fixed between nuts.
向の一端部を前記第２の振動体の軸方向の一端部に接合
してなることを特徴とする特許請求の範囲第４項または
第５項に記載の液体霧化装置。(6) The second vibrating body is formed into a thin-walled cylindrical shape, and one end in the axial direction is joined to one end in the axial direction of the second vibrating body. The liquid atomization device according to item 4 or 5.
子でなることを特徴とする特許請求の範囲第１項、第２
項、第３項、第４項、第５項または第６項に記載の液体
霧化装置。(7) Claims 1 and 2, characterized in that the ultrasonic transducer is a Langevin-type piezoelectric transducer.
3. The liquid atomization device according to item 3, item 4, item 5, or item 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14563686A JPS631476A (en) | 1986-06-20 | 1986-06-20 | Liquid atomizing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14563686A JPS631476A (en) | 1986-06-20 | 1986-06-20 | Liquid atomizing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS631476A true JPS631476A (en) | 1988-01-06 |
Family
ID=15389592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14563686A Pending JPS631476A (en) | 1986-06-20 | 1986-06-20 | Liquid atomizing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS631476A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045218C (en) * | 1994-12-26 | 1999-09-22 | 日本电气株式会社 | System of coveying liquid at special speed using supersonic vibrator |
| CN1046869C (en) * | 1992-11-30 | 1999-12-01 | 中国科学院上海硅酸盐研究所 | Multi-function high-flow ultrasonic spray system and its application thereof |
| WO2022222456A1 (en) * | 2021-04-19 | 2022-10-27 | 浙江迈博高分子材料有限公司 | Aerosol cartridge |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6249655B2 (en) * | 1980-04-09 | 1987-10-20 | Koromubia Magune Purodakutsu Kk |
-
1986
- 1986-06-20 JP JP14563686A patent/JPS631476A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6249655B2 (en) * | 1980-04-09 | 1987-10-20 | Koromubia Magune Purodakutsu Kk |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046869C (en) * | 1992-11-30 | 1999-12-01 | 中国科学院上海硅酸盐研究所 | Multi-function high-flow ultrasonic spray system and its application thereof |
| CN1045218C (en) * | 1994-12-26 | 1999-09-22 | 日本电气株式会社 | System of coveying liquid at special speed using supersonic vibrator |
| WO2022222456A1 (en) * | 2021-04-19 | 2022-10-27 | 浙江迈博高分子材料有限公司 | Aerosol cartridge |
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