JPS5888522A - Atomizing apparatus - Google Patents

Atomizing apparatus

Info

Publication number
JPS5888522A
JPS5888522A JP18757781A JP18757781A JPS5888522A JP S5888522 A JPS5888522 A JP S5888522A JP 18757781 A JP18757781 A JP 18757781A JP 18757781 A JP18757781 A JP 18757781A JP S5888522 A JPS5888522 A JP S5888522A
Authority
JP
Japan
Prior art keywords
opening
nozzle
atomization
chamber
pressurizing chamber
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.)
Granted
Application number
JP18757781A
Other languages
Japanese (ja)
Other versions
JPS631910B2 (en
Inventor
Naoyoshi Maehara
前原　直芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP18757781A priority Critical patent/JPS5888522A/en
Publication of JPS5888522A publication Critical patent/JPS5888522A/en
Publication of JPS631910B2 publication Critical patent/JPS631910B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/34—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by ultrasonic means or other kinds of vibrations
    • F23D11/345—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by ultrasonic means or other kinds of vibrations with vibrating atomiser surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Special Spraying Apparatus (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)

Abstract

PURPOSE:To simplify the structure of an atomizing apparatus, by fixing a nozzle plate and an electric oscillator formed with a hole to a main element of the apparatus in the manner that nozzles are located in the area of said hole formed in the electric oscillator and an opening of a pressurizing chamber, and making the opening of said pressurizing chamber conform to the outer contour of the electric oscillator. CONSTITUTION:Kerosine is filled in a pressurizing chamber 44 which is formed in a main element 43 of an atomizing section 16. The pressurizing chamber 44 has an opening 47 in addition to a kerosine inlet port 45 and a gas outlet port 46, and a nozzle plate 48 is fixed to the chamber 44 by way of soldering. The nozzle plate 48 is provided with a plurality of nozzles 49. In the drawing, a numeral 50 represents a circular, electric oscillator that is formed with a hole 51 at its central part. Here, arrangement is such that the contour of the piezo-electric element 50 conforms substantially to the contour of the opening 47 of the pressurizing chamber 44. With such an arrangement, it is enabled to obtain an atomizing apparatus which is inexpensive, simple and compact in structure, superior in its atomizing performance and extremely low in its power consumption. Thus, an atomizing apparatus capable of saving energy and superior in its performance can be obtained.

Description

【発明の詳細な説明】 本発明は、灯油、軽油等の液体燃料、水、薬液、インク
等の液体の霧化装置に関し、さらに詳しくは、圧電素子
等の電気的振動子の超音波振動を利用して液体を霧化す
る超音波霧化装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for atomizing liquid fuels such as kerosene and light oil, water, chemicals, inks, etc., and more specifically, the present invention relates to an atomizer for atomizing liquids such as kerosene and light oil, water, chemicals, and inks, and more specifically, the present invention relates to a device for atomizing liquids such as kerosene and light oil, water, chemicals, and inks. The present invention relates to an ultrasonic atomization device that uses ultrasonic waves to atomize liquid.

従来、この種の霧化装置として、次のような３種類の超
音波霧化装置が提案されている。Conventionally, the following three types of ultrasonic atomizers have been proposed as this type of atomizer.

（１）第１の超音波霧化装置は振巾増巾型霧化装置であ
って、ホーン型振動子をジーラルミ／等で構成し、圧電
素子等の振動振巾を増巾して、ホーン先端の最大振巾面
に液体をポンプ等で供給し霧化するものである。(1) The first ultrasonic atomizer is an amplitude-enhancing atomizer, in which the horn-type vibrator is made of G-Raluminium/etc., and the vibration amplitude of a piezoelectric element or the like is amplified. Liquid is supplied by a pump or the like to the maximum amplitude surface of the tip and atomized.

イ（２）第２の超音波霧化装置は、加湿器等に実用化さ
れているものであって液柱型超音波霧化装置である。こ
れは、液槽の底面に設けた圧電素子の超音波振動エネル
ギーを液面近傍に集中させ、液面近傍での一種のキャビ
テーション現象を利用して霧化するものである。(2) The second ultrasonic atomizer is a liquid column type ultrasonic atomizer that has been put into practical use in humidifiers and the like. This concentrates the ultrasonic vibration energy of a piezoelectric element provided on the bottom of the liquid tank near the liquid surface, and atomizes the liquid by utilizing a type of cavitation phenomenon near the liquid surface.

（３）第３の超音波霧化装置は、近年イ／クジエット記
録装置に用いられているものであり、例えば、第１図に
示すように、液室１の一端に圧電素子２を装着し、前記
液室１の他端にオリフィス３を設けたものであり、前記
圧電素子２の６振動による液室１内の体積変化によって
オリフィス３から液滴４を噴射し、霧化するものである
。(3) The third ultrasonic atomizer is one that has been used in eject/queue recorders in recent years. For example, as shown in FIG. 1, a piezoelectric element 2 is attached to one end of the liquid chamber 1. , an orifice 3 is provided at the other end of the liquid chamber 1, and droplets 4 are ejected from the orifice 3 and atomized by the change in volume within the liquid chamber 1 caused by the six vibrations of the piezoelectric element 2. .

しかしながら、これら従来の超音波霧化装置は種々の欠
点があった。However, these conventional ultrasonic atomization devices have various drawbacks.

（１）Ｑ霧化装置は、ホーン振動子の機械的共振を利用
するものであるため、高い加工精度が要求されるもので
あり、したがって極めて高価になると共に、ホーン振動
子の固定方法も、安定な霧化動作維持のためには、極め
て面倒であった。また、液体を効果的にホーン振動子先
端に供給するためにポンプ等の装置が必要であり、装置
全体が大型化高価格化せざるを得なかった。さらに、１
０ｃψｍｌｎ程度の霧化量を得るのに要する電力は、１
０〜２０ワツトと大きいものであるにもかかわらず、十
分な微粒化性能が得、られなかった。(1) Since the Q atomization device utilizes the mechanical resonance of the horn vibrator, high processing precision is required, which makes it extremely expensive, and the method of fixing the horn vibrator is difficult. It was extremely troublesome to maintain stable atomization operation. In addition, a device such as a pump is required to effectively supply the liquid to the tip of the horn vibrator, making the entire device larger and more expensive. Furthermore, 1
The power required to obtain an atomization amount of about 0cψmln is 1
Despite the large power of 0 to 20 watts, sufficient atomization performance could not be obtained.

（２）の霧化装置は、微粒化性能は良好なものであった
が、液中に直接超音波エネルギーを照射するものである
ため、霧化に要する電力が極めて大きく、３０〜６０ワ
ツトを必要とし、しかも１〜２ＭＨＢ・という高い周波
数での動作が必要であるため、その発生する不要輻射レ
ベルが著しく、ラジオノイズ等の電波障害が発生すると
いう重大な欠点を有していた。したがって、駆動回路も
著しく高価となるものであった。さらに、霧化される液
体の温度等によって、霧化特性が極めて著しい影響を受
けるため、その補償は極めて困難で、面倒なものであっ
た。The atomization device (2) had good atomization performance, but because it irradiates ultrasonic energy directly into the liquid, the power required for atomization is extremely large, 30 to 60 watts. Moreover, since it is necessary to operate at a high frequency of 1 to 2 MHz, it has the serious disadvantage that the level of unnecessary radiation generated is significant and radio interference such as radio noise occurs. Therefore, the drive circuit also becomes extremely expensive. Furthermore, since the atomization characteristics are extremely significantly affected by the temperature of the liquid to be atomized, it has been extremely difficult and troublesome to compensate for this.

（３）の霧化装置は、消費電力が小さく、極めてコンパ
クトであるが、液室１の一端に設けた圧電素子２の発生
する圧力波を、液室他端で上昇させ、上昇された圧力に
よジオリフイス３から液滴を噴射する構成であるため、
いわゆる超音波キャビテーションによって霧化される液
体中の溶存空気が気泡、化し、霧化動作に著しい影響を
与え、著しい場合には、全く霧化できなくなるという欠
点を有していた。したがって、霧化される液体中の溶存
空気を脱気しておかねばならないという面倒な問題を有
するものであった。The atomization device (3) has low power consumption and is extremely compact, but it raises the pressure wave generated by the piezoelectric element 2 installed at one end of the liquid chamber 1 at the other end of the liquid chamber, and the increased pressure Since the configuration is such that droplets are ejected from the georifice 3,
Dissolved air in the liquid that is atomized by so-called ultrasonic cavitation turns into bubbles, which significantly affects the atomization operation, and in severe cases, it becomes impossible to atomize at all. Therefore, there is a troublesome problem in that the dissolved air in the liquid to be atomized must be degassed.

本発明は、この−ような従来の欠点を一掃した霧化装置
を提供せんとするものである。The present invention aims to provide an atomizing device that eliminates these conventional drawbacks.

第１の目的は、構成が極めて簡単でコンパクトであゃ、
従って低価格な霧化装置を提供することである。The first purpose is to have an extremely simple and compact configuration.
Therefore, it is an object of the present invention to provide a low-cost atomization device.

第２の目的は、微粒化性能などの霧化特性に優れ、かつ
消費電力が極めて小さく、従って制御性に優れ、省エネ
ルギー性の高い霧化装置を提供することである。The second object is to provide an atomization device that has excellent atomization characteristics such as atomization performance, has extremely low power consumption, and is therefore excellent in controllability and highly energy-saving.

さらに第３の目的は、溶存空気を多量に含む液体であっ
ても、キャビテーション気泡の発生等による不安定な霧
化動作を生じない極めて安定な霧化動作を実現すること
が可能な霧化装置を提供することである。Furthermore, the third objective is to create an atomization device that can achieve extremely stable atomization operation that does not cause unstable atomization operations due to cavitation bubbles, etc., even with liquids that contain a large amount of dissolved air. The goal is to provide the following.

本発明は、上記目的を達成するために以下のような構成
により成るものである。In order to achieve the above object, the present invention has the following configuration.

すなわち、本発明は、開口部を有する加圧室を設けた基
体に、中空部を有する電気的振動子と、ノズルを有する
ノズル板とを、前記ノズルが前記加圧室Ω開口部と前記
電気的振動子の中空部とに臨むように装着し、前記電気
的振動子により前記ノズルを加振するよう構成すると共
に、前記電気的振動子の外周は前記加圧室の開口部とほ
ぼ一致させる構成とすることにより、前記電気的振動子
による前記ノズルの加振動作だけで、前記加圧室内に充
填された液体を極めて効率良く、しかも安定に、前記ノ
ズルから噴射し霧化することができると共に、液体を吸
い上げ、加圧室に自給するこ　。That is, in the present invention, an electric vibrator having a hollow portion and a nozzle plate having a nozzle are attached to a base body provided with a pressurizing chamber having an opening, and the nozzle is connected to the pressurizing chamber Ω opening and the electric vibrator. The nozzle is mounted so as to face the hollow part of the target vibrator, and the nozzle is vibrated by the electric vibrator, and the outer circumference of the electric vibrator is substantially aligned with the opening of the pressurizing chamber. With this configuration, the liquid filled in the pressurized chamber can be injected and atomized from the nozzle very efficiently and stably only by the vibration operation of the nozzle by the electric vibrator. At the same time, the liquid can be sucked up and self-supplied into the pressurized chamber.

とができる霧化装置を実現するものである。This is to realize an atomization device that can.

以下本発明の一実施例の霧化装置について図面と共に説
明する。An atomizing device according to an embodiment of the present invention will be described below with reference to the drawings.

第２図は本発明の霧化装置の一実施例を適用した温風機
の構成を示す断面図である。FIG. 2 is a sectional view showing the configuration of a hot air fan to which an embodiment of the atomization device of the present invention is applied.

図において、１０は温風機のケースであり、上部には、
操作部１１が設けられ、制御部１２に操作指令を与える
ようになっている。　　・灯油は、タンク（図示せず）
からパイプ１３を通り、レベラ１４に供給され、液面が
一定に制御されている。そしてレベラ１４からパイプ１
６を経て霧化部１６に供給され、前記霧化部１６は霧化
室１７に霧化粒子１８を噴霧する。In the figure, 10 is the case of the hot air fan, and the upper part is
An operating section 11 is provided, and is configured to give operating commands to the control section 12. - Kerosene is stored in a tank (not shown)
It passes through a pipe 13 and is supplied to a leveler 14, where the liquid level is controlled to be constant. And from leveler 14 to pipe 1
The atomized particles 18 are supplied to the atomization section 16 through the atomization chamber 17 .

一方燃焼空気は、燃焼７テン１９にょシ吸気筒２０より
、オリフィス２１を通って、送風路２２に送られ、空気
室２３に供給される。空気室２３は円筒状をしておｐ１
空気室２３の下方には、円筒接線方向に空気を噴出し、
気化混合室２４に旋回気流を発生させる噴出口２６が設
けられ、上方には、空気室２３の半径方向（空気を噴出
する炎口２６が設けられている。２７は３次空気の噴出
口である。On the other hand, combustion air is sent from the combustion air intake cylinder 20 through the orifice 21 to the air passage 22, and is supplied to the air chamber 23. The air chamber 23 has a cylindrical shape.
Air is ejected below the air chamber 23 in the tangential direction of the cylinder,
The vaporization mixing chamber 24 is provided with an ejection port 26 that generates a swirling air flow, and above the air chamber 23 in the radial direction (a flame port 26 that ejects air is provided. 27 is a tertiary air ejection port). be.

燃焼ファン１９により送られる空気の一部は、送風路２
８より、旋回器２９にて図のような旋回気流となって霧
化室１７に送られる。これは、霧化部１６から噴霧され
る霧化粒子が霧化室１７の壁面に付着するのを防止する
ものである。A part of the air sent by the combustion fan 19 is sent to the air passage 2
8, the swirler 29 transforms the air into a swirling airflow as shown in the figure and sends it to the atomization chamber 17. This prevents the atomized particles sprayed from the atomization section 16 from adhering to the wall surface of the atomization chamber 17.

気化混合室２４に吐出された霧化粒子１８は、点火器３
ｏにて点火され、気化混合室２４で１〜２秒の燃焼の後
、図のように火炎３１を炎口２６からの噴出空気の周囲
に形成する。The atomized particles 18 discharged into the vaporization mixing chamber 24 are sent to the igniter 3
After combustion for 1 to 2 seconds in the vaporization mixing chamber 24, a flame 31 is formed around the air ejected from the flame port 26 as shown in the figure.

したがって、灯油は、霧化部１６によシ霧化粒子１８と
なって気化混合室２４に噴霧吐出され、図中矢印のよう
な旋回気流にて攪はんされ、燃焼熱により気化されて、
炎口２６の方向に上昇し、火炎３１を形成して燃焼する
のである。３２はフレームロッドであり、燃焼状態を検
知し、制御部１２にその検知信号を送るものである。燃
焼排気ガスは、排気筒３３よシ排出される。Therefore, the kerosene is atomized into atomized particles 18 by the atomization unit 16, and is atomized and discharged into the vaporization mixing chamber 24, stirred by the swirling airflow as shown by the arrow in the figure, and vaporized by the heat of combustion.
It rises in the direction of the flame port 26, forms a flame 31, and burns. 32 is a flame rod that detects the combustion state and sends a detection signal to the control section 12. The combustion exhaust gas is exhausted through the exhaust stack 33.

対流ファン３４は、吸込口３５より室内空気を吸い込み
、燃焼筒兼熱交換器３６に送風する。そして、温風を吐
出口３７より吹き出すものである。The convection fan 34 sucks indoor air through the suction port 35 and sends it to the combustion tube/heat exchanger 36 . Then, hot air is blown out from the discharge port 37.

次に、霧化部１６について、さらに詳しく説明する。第
３図は、第２図における霧化部１６の拡大断面図であり
、第２図と同符号は相当物である。Next, the atomizing section 16 will be explained in more detail. FIG. 3 is an enlarged sectional view of the atomizing section 16 in FIG. 2, and the same symbols as in FIG. 2 are equivalent.

霧化部１６は、霧化室１７の壁面３８−［ビス’３９．
４０にて固定されている。The atomization unit 16 is connected to the wall surface 38 of the atomization chamber 17 through the screw '39.
It is fixed at 40.

霧化動作停止時（燃焼停止時）において、灯油の、液面
は、レベラ１４により、パイプ１６内の液面Ａの位置に
制御されている。燃焼ファン１９が起動されると、オリ
フィス２１の下流に設けられた負圧発生部４１には、一
定の負圧力が発生し、そこに・連結された排気パイプ４
２内も同等の負圧力となる＝ 従って、灯油の液面Ａは上昇し、第２図Ｂの位置となる
。すなわち、霧化部１６の基体４３に設けられた加圧室
４４は灯油が満たされるのである。When the atomization operation is stopped (combustion is stopped), the level of the kerosene is controlled to the level A in the pipe 16 by the leveler 14. When the combustion fan 19 is started, a constant negative pressure is generated in the negative pressure generating section 41 provided downstream of the orifice 21, and the exhaust pipe 4 connected thereto is generated.
2 becomes the same negative pressure = Therefore, the liquid level A of kerosene rises to the position shown in Figure 2 B. That is, the pressurized chamber 44 provided in the base body 43 of the atomizing section 16 is filled with kerosene.

前記加圧室４４は、灯油の供給口４６、排気口４６の他
に、開口部４７を有しておシ、ノズル板４８が、半田付
によシ接着されている。ノズル板４８は、厚さが５０μ
ｍのステンレス板で構成され、中央には、その直径が３
０〜１ｏＯμｍ程度のノズル４９が、複数個設けられて
いる。６ｏは円形の圧電素子（電気的振動子）であり、
中央に中空部５１が設けられている。そして、中空部６
１にノズル４９が臨むようにノズル板４８に半田付接着
されている。加圧室４４の開口部４７は円形であり、そ
の直径は約９叫程度であり、一方圧電素子□５ｏの外径
は約１０調である。従って、開口部４７の外周と、圧電
素子６０の外周とは、略一致して構成され、かつ、圧電
素子５ｏの外周が、開口部４７の外周より大きくなるよ
うに構成されているのである。The pressurizing chamber 44 has an opening 47 in addition to a kerosene supply port 46 and an exhaust port 46, and a nozzle plate 48 is bonded thereto by soldering. The nozzle plate 48 has a thickness of 50μ
It consists of a stainless steel plate with a diameter of 3 m in diameter.
A plurality of nozzles 49 each having a diameter of about 0 to 100 μm are provided. 6o is a circular piezoelectric element (electric vibrator),
A hollow part 51 is provided in the center. And hollow part 6
The nozzle 49 is soldered and bonded to the nozzle plate 48 so that the nozzle 49 faces the nozzle 1 . The opening 47 of the pressurizing chamber 44 is circular and has a diameter of approximately 9 mm, while the outer diameter of the piezoelectric element □5o is approximately 10 mm. Therefore, the outer circumference of the opening 47 and the outer circumference of the piezoelectric element 60 are configured to substantially match, and the outer circumference of the piezoelectric element 5o is configured to be larger than the outer circumference of the opening 47.

５２．５３はリード線であり、圧電素子５ｏに対して制
御部１２より駆動電圧を供給するものである。基体４３
は、）ビス５４．５５にて、保護カバー６６に取９つけ
られている。保護カバー５６は、中央に霧化粒子１８を
通す開口６７が設けられ、かつ、圧電素子６ｏを、気化
混合室２４からの輻射熱や、機械的損傷から保護するも
のである。Reference numerals 52 and 53 are lead wires that supply a drive voltage from the control section 12 to the piezoelectric element 5o. Base body 43
is attached to the protective cover 66 with screws 54 and 55. The protective cover 56 is provided with an opening 67 in the center through which the atomized particles 18 pass, and protects the piezoelectric element 6o from radiant heat from the vaporization mixing chamber 24 and mechanical damage.

圧電素子６ｏは、第４図（ａ）、　、　（ｂ）　、又は
（Ｃ）のような交流電圧を霧化すべき霧化量に応じて供
給される。今、正の半サイクル電圧が供給されると圧電
素子６ｏは直径方向に伸張変位を発生し、一方、負の半
サイクル電圧が印加されると、直径方向に収縮変位を生
じる。圧電素子５ｏは、ノズル板４８に半田付接着され
ているから、ノズル板４８は、圧電素子６ｏの伸縮変位
の発生に応じて、いわゆ、る円板の屈曲振動を発生し、
したがって、ノズル４９は、圧電素子５ｏによって第３
図の左右方向に加振される。よってノズル４９からは、
図のように霧化粒子１８を圧電素子６０の印加電圧に応
じて噴霧するのである。このように、ノズル４９を加振
して霧化するように構成することにより、加圧室４４内
の振動加速度の最大点がノズル４９の近傍となシ、この
ため、霧化粒子１８を吐出するだめのエネルギーは必要
最小限度のもので十分である。そして、振動加速度最大
点が、ノズル近傍にあることは、キャビテーションによ
シ、灯油中の溶存空気が気泡化する前に霧化粒子１８と
して吐出してしまうという結果を生じるので、キャビテ
ーション気泡による不安定動作の発生を生じるという不
都合がない。また、かシに気泡が加圧室４４内に存在し
ても、ノズル４９近傍にさえ過大気泡がなければ、霧化
動作に対する影響はほとんど無視するどとができる。な
ぜならば、ノズル４９を加振して霧化するという構成で
あるから、ノズル４９近傍での液体（灯油）の条件さえ
安定であれば、霧化動作が安定に保ち得るのである。The piezoelectric element 6o is supplied with alternating current voltage as shown in FIG. 4(a), 4(b), or 4(c) according to the amount of atomization to be atomized. Now, when a positive half-cycle voltage is applied, the piezoelectric element 6o generates an expansion displacement in the diametrical direction, and on the other hand, when a negative half-cycle voltage is applied, a contraction displacement occurs in the diametrical direction. Since the piezoelectric element 5o is soldered and bonded to the nozzle plate 48, the nozzle plate 48 generates so-called bending vibration of a disc in response to the expansion and contraction of the piezoelectric element 6o.
Therefore, the nozzle 49 is connected to the third
Vibration is applied in the left and right directions in the figure. Therefore, from nozzle 49,
As shown in the figure, the atomized particles 18 are atomized according to the voltage applied to the piezoelectric element 60. By configuring the nozzle 49 to vibrate and atomize in this way, the maximum point of vibration acceleration in the pressurizing chamber 44 is located near the nozzle 49, and therefore the atomized particles 18 are discharged. The minimum amount of energy required is sufficient. When the maximum vibration acceleration point is near the nozzle, cavitation causes the dissolved air in the kerosene to be ejected as atomized particles 18 before becoming bubbles. There is no inconvenience of occurrence of stable operation. Further, even if air bubbles exist in the pressurizing chamber 44, if there are no excessive air bubbles even near the nozzle 49, the effect on the atomization operation can be almost ignored. This is because the nozzle 49 is vibrated to atomize, so as long as the conditions of the liquid (kerosene) near the nozzle 49 are stable, the atomization operation can be kept stable.

圧電素子６０の外周は、加圧室４４の開口部４７の外周
と略一致する構造となっているが、単にノズル４９から
霧化粒子１８を吐出さえすればよいという目的だけであ
れば、例えば、第６図および第６図のような構造であっ
てもよい。第６図・第６図において第３図と同符号は相
当物であり、第５図は、外径１０Ｍｎの圧電素子５ｏに
対し、加圧室４４の開口部４７の直径を１３調程度以上
にしたものであり、第６図は外径１０ｍの圧電素子６゜
に対し、開口部４７の直径を７咽程度以下にした場合の
構成を示している。The outer periphery of the piezoelectric element 60 is structured to approximately match the outer periphery of the opening 47 of the pressurizing chamber 44, but if the purpose is simply to discharge the atomized particles 18 from the nozzle 49, for example, , 6 and 6 may be used. 6. In FIG. 6, the same reference numerals as in FIG. 3 correspond to those in FIG. 3, and in FIG. FIG. 6 shows a configuration in which the diameter of the opening 47 is set to about 7 mm or less for a piezoelectric element having an outer diameter of 10 m and a diameter of 6 degrees.

第５図の場合には、加圧室４４の開口部４７が、ノズル
板４８で覆われている部分５８が圧電素子、５０の面積
と同等程度とな９、このため圧電素子６ｏの半径方向の
伸縮振動が円板の屈曲振動に変換される効率が極端に低
下し、いわゆる霧化効率が低下してしまう。さらにノズ
ル板４８が薄いため、圧電素子５０の半径方向以外の振
動も顕著に現れるようになシ霧化状態が極めて不安定に
なるうえに、ノズル板４８の基体４３に対する接着部近
傍の疲労が著しいという欠点を有している。In the case of FIG. 5, the area 58 of the opening 47 of the pressurizing chamber 44 covered by the nozzle plate 48 is about the same as the area of the piezoelectric element 50, and therefore the radial direction of the piezoelectric element 6o The efficiency with which the stretching vibration of the disk is converted into the bending vibration of the disk is extremely reduced, and the so-called atomization efficiency is reduced. Furthermore, since the nozzle plate 48 is thin, vibrations of the piezoelectric element 50 in directions other than the radial direction become noticeable, making the atomization state extremely unstable. It has significant drawbacks.

−力筒６図の場合には、第６図の場合とは逆に圧電素子
５ｏが実質的に基体４３に固定されてしまっている部分
５９の面積が、圧電素子６ｏの面積に比べて同等程度と
なるため、圧電素子６０はノズル板４８のノズル４９を
加振するというより、むしろ、基体４３を加振する様な
傾向が強まり、やはシ、霧化効率の低下と、基体４３の
各部分と圧電素子５ｏとの共振による不安定動作とを生
じることになる。- In the case of the force cylinder 6, contrary to the case of FIG. 6, the area of the portion 59 where the piezoelectric element 5o is substantially fixed to the base 43 is equal to the area of the piezoelectric element 6o. As a result, the piezoelectric element 60 tends to vibrate the base body 43 rather than the nozzle 49 of the nozzle plate 48, which results in a decrease in atomization efficiency and an increase in the vibration of the base body 43. This results in unstable operation due to resonance between each part and the piezoelectric element 5o.

従って、第３図に示すように圧電素子５ｏの外周と、加
圧室４４の開口部４７の外周とを転々一致させる構成と
することが、高い霧化効率を発揮し、しかも、極めて安
定な霧化動作を保証する上で、極めて重要である。さら
に、ノズル板４８の屈曲振動による疲労を軽減するため
には、上記の様に、圧電素子５０と開口部４７の外周を
略々一致させ、かつ、圧電素子６ｏの外周が開口部４７
の外周より多少大きくなるようにした第３図の様な構成
とすることが重要である。Therefore, as shown in FIG. 3, a configuration in which the outer periphery of the piezoelectric element 5o and the outer periphery of the opening 47 of the pressurizing chamber 44 are made to coincide with each other provides high atomization efficiency and extremely stable atomization. This is extremely important in ensuring the atomization operation. Furthermore, in order to reduce fatigue due to bending vibration of the nozzle plate 48, as described above, the outer circumference of the piezoelectric element 50 and the opening 47 should be made to substantially match, and the outer circumference of the piezoelectric element 6o should be aligned with the outer circumference of the opening 47.
It is important to have a configuration as shown in FIG. 3, which is somewhat larger than the outer circumference of.

このように、第３図の如き構成により、ノズル板４８に
設けられたノズル４９は、極めて安定に、かつ効率良く
加振され、図示の如く安定な霧化動作を実現することが
できる。また霧化粒子１８の゛吐出によシ生じる加圧室
４４内の灯油不足分は、パイプ１６から供給口４５を経
て吸い上げられる。In this way, with the configuration as shown in FIG. 3, the nozzles 49 provided on the nozzle plate 48 are excited very stably and efficiently, making it possible to realize a stable atomizing operation as shown. Furthermore, the kerosene shortage in the pressurized chamber 44 caused by the discharge of the atomized particles 18 is sucked up from the pipe 16 through the supply port 45.

なぜならば、ノズル４９は、その直径が３０〜１ｏｏμ
ｍ程度に構成されてい、るため、ノズル４９に発生する
灯油の表面張力が大きく、ノズル４９からの空気流入か
ないからである。This is because the nozzle 49 has a diameter of 30 to 1 ooμ.
This is because the surface tension of the kerosene generated in the nozzle 49 is large, and air does not flow in from the nozzle 49.

したがって、圧電素子６ｏの振動により、灯油は自動的
に吸い上げられ、噴霧されるので、ポンプ等の液体供給
手段を全く必要としない霧化装置を実現できるのである
。Therefore, the kerosene is automatically sucked up and atomized by the vibration of the piezoelectric element 6o, making it possible to realize an atomization device that does not require any liquid supply means such as a pump.

第３図に示した霧化部１６により、約２０ｃｑ／ｎｘｉ
ｎ程度の灯油を霧化することが可能であシ、この時の圧
電素子５０の消費電力は、０．１　Ｗａｔ　ｔｇ以下で
ある。Approximately 20 cq/nxi by the atomizing section 16 shown in FIG.
It is possible to atomize about n kerosene, and the power consumption of the piezoelectric element 50 at this time is 0.1 Watt tg or less.

従って、従来の霧化装置に比べて、極めて構成が簡単で
コ、ンパクトであり、著しく消費電力の小さい霧化装置
を実現できる。Therefore, compared to conventional atomizing devices, it is possible to realize an atomizing device that is extremely simple and compact in structure and consumes significantly less power.

霧化される粒子の直径は、ノズル４９の直径により決定
され、ノズル４９の直径の選択に応じて３０〜１ｏｏμ
ｍ程度の微小で、かつ、均一な粒径の霧化粒子を得るこ
とが可能である。The diameter of the particles to be atomized is determined by the diameter of the nozzle 49 and varies from 30 to 1 ooμ depending on the selection of the diameter of the nozzle 49.
It is possible to obtain atomized particles that are as small as m and have a uniform particle size.

以上に述べたように、本発明によれば、ノズルを有する
ノズル板、と、中空部を２有する電気的振動子とを、前
記ノズルが前記中空部と加圧室の開口部とに臨むように
基体に装着し、かつ、前記電気的振動子の外周と前記開
口部とをほぼ一致させるよう構成して、前記ノズルを加
振し、前記加圧室の液体をノズルより噴霧するよう構成
したので、極めて構成が簡単でコンパクトであり、従っ
て低価格であると共に、霧化特性に優れ、しかも消費電
力が著しく少なく、従って、省エネルギーで制御性に富
んだ霧化装置を提供することができる。As described above, according to the present invention, a nozzle plate having a nozzle and an electric vibrator having two hollow parts are arranged such that the nozzle faces the hollow part and the opening of the pressurizing chamber. The electric vibrator is attached to a base body, and is configured such that the outer circumference of the electric vibrator and the opening substantially match, and is configured to vibrate the nozzle and spray the liquid in the pressurized chamber from the nozzle. Therefore, it is possible to provide an atomizing device which has an extremely simple and compact structure, is therefore low in price, has excellent atomization characteristics, and has extremely low power consumption, and is therefore energy-saving and highly controllable.

そして、灯油などの溶存空気を多量に含んだ液体であっ
てもキャビテーションによる気泡発生と、気泡による不
安定な霧化動作の発生とを防止でき、極めて安定で確実
な霧化動作を維持することが可能な霧化装置を実現する
ことができるものである。Even in liquids containing a large amount of dissolved air, such as kerosene, it is possible to prevent the generation of bubbles due to cavitation and unstable atomization operation due to air bubbles, and maintain extremely stable and reliable atomization operation. This makes it possible to realize an atomization device that is capable of

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の霧化装置の構成断面図、第２図は本発明
の一実施例にかかる霧化装置を適用した温風機の構成断
面図、第３図は同霧化部の構成を示す断面図、第４図（
ａ）　、　（ｂ）および（Ｃ）は電気的振動子の霧化量
に応じた駆動電圧波形図、第５図および第６図は本発明
の構成と比較して説明するために用いた霧化部の構成断
面図である。 ４３・・・・・・基体、４４・・・・・・加圧室、４７
・・・・・・開口部、４８・・・・・・ノズル板、４９
・・・・・ノズル、５０・・・・・・電気的振動子、６
１・・・・・・中空部。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図 第２図 １１！５図 第６図FIG. 1 is a sectional view of the configuration of a conventional atomization device, FIG. 2 is a sectional view of the configuration of a hot air fan to which the atomization device according to an embodiment of the present invention is applied, and FIG. 3 is a configuration of the atomization section. A sectional view shown in Fig. 4 (
a), (b) and (C) are drive voltage waveform diagrams according to the amount of atomization of the electric vibrator, and Figures 5 and 6 are fog diagrams used for comparison and explanation with the configuration of the present invention. FIG. 43... Base body, 44... Pressurized chamber, 47
......Opening section, 48...Nozzle plate, 49
... Nozzle, 50 ... Electric vibrator, 6
1...Hollow part. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 11! 5 Figure 6

Claims (3)

【特許請求の範囲】[Claims] （１）開口部を有する加圧室を設けた基体と、この基体
の開口部に装着されるとともに、ノズルを設けたノズル
板と、このノズル板に装着されるとともに、中空部を設
けた電気的振動子とを備え、前記開口部および前記中空
部に前記ノズルが臨むよう前記電気的振動子およびノズ
ル板を前記基体に装着すると共に、前記電気的振動子の
外周の大きさは前記加圧室の開口部にほぼ一致させた霧
化装置。(1) A base body provided with a pressurized chamber having an opening, a nozzle plate attached to the opening of this base body and provided with a nozzle, and an electric generator attached to this nozzle plate and provided with a hollow part. the electric vibrator and the nozzle plate are mounted on the base body so that the nozzle faces the opening and the hollow part, and the size of the outer circumference of the electric vibrator is set according to the pressure Atomization device approximately aligned with the opening of the chamber. （２）電気的振動子の外周を前記加圧室の開口部より大
きくした特許請求の範囲第１項記載の霧化装置。(2) The atomization device according to claim 1, wherein the outer periphery of the electric vibrator is larger than the opening of the pressurizing chamber. （３）電気的振動子を円板状の圧電素子によ多構成する
と共に、前記加圧室の開口部を円形に構成し、両型径を
ほぼ一致させた特許請求の範囲第１項ま(3) The electric vibrator is configured with a disk-shaped piezoelectric element, and the opening of the pressurizing chamber is configured in a circular shape, and the diameters of both types are made substantially the same.
JP18757781A 1981-11-20 1981-11-20 Atomizing apparatus Granted JPS5888522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18757781A JPS5888522A (en) 1981-11-20 1981-11-20 Atomizing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18757781A JPS5888522A (en) 1981-11-20 1981-11-20 Atomizing apparatus

Publications (2)

Publication Number Publication Date
JPS5888522A true JPS5888522A (en) 1983-05-26
JPS631910B2 JPS631910B2 (en) 1988-01-14

Family

ID=16208529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18757781A Granted JPS5888522A (en) 1981-11-20 1981-11-20 Atomizing apparatus

Country Status (1)

Country Link
JP (1) JPS5888522A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7108565B2 (en) 2019-03-11 2022-07-28 信越化学工業株式会社 CONDUCTIVE POLYMER COMPOSITION, COATED ARTICLE AND PATTERN FORMATION METHOD
JP2023078552A (en) 2021-11-26 2023-06-07 信越化学工業株式会社 Conductive polymer composition, covered product, and pattern formation method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58122070A (en) * 1981-10-15 1983-07-20 Matsushita Electric Ind Co Ltd Atomizing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58122070A (en) * 1981-10-15 1983-07-20 Matsushita Electric Ind Co Ltd Atomizing device

Also Published As

Publication number Publication date
JPS631910B2 (en) 1988-01-14

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