JPS6351066B2 - - Google Patents
Info
- Publication number
- JPS6351066B2 JPS6351066B2 JP2795283A JP2795283A JPS6351066B2 JP S6351066 B2 JPS6351066 B2 JP S6351066B2 JP 2795283 A JP2795283 A JP 2795283A JP 2795283 A JP2795283 A JP 2795283A JP S6351066 B2 JPS6351066 B2 JP S6351066B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle plate
- electric vibrator
- lead wire
- electrode film
- nozzle
- 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.)
- Expired
Links
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
- B05B17/0638—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
Landscapes
- Special Spraying Apparatus (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、灯油などの液体燃料、水・薬液など
の液体の霧化ポンプに関するものであり、さらに
詳しくは、圧電振動子などの電気振動子を利用し
た霧化ポンプに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an atomizing pump for liquid fuels such as kerosene and liquids such as water and chemical solutions. This relates to the atomization pump used.
従来例の構成とその問題点
従来のこの種の霧化ポンプは、第１図に示すよ
うに構成されている。すなわち電気振動子１の相
対向する平滑面には、電極膜２ａ，２ｂが形成さ
れ、電極膜２ｂとノズル板３とは有機系あるいは
無機系の接着剤、または軟鑞などの固着層４ａを
介して接合がされていた。また、ノズル板３の他
方（裏面）の面とボデイー５は、上述の接着剤あ
るいは軟鑞などをと同じ固着層４ｂを介して接合
がされていた。Structure of a conventional example and its problems A conventional atomizing pump of this type has a structure as shown in FIG. That is, electrode films 2a and 2b are formed on opposing smooth surfaces of the electric vibrator 1, and the electrode film 2b and the nozzle plate 3 are bonded with a fixing layer 4a such as organic or inorganic adhesive or soft solder. The connection was made through the Further, the other (back) surface of the nozzle plate 3 and the body 5 were bonded to each other via the same adhesive layer 4b as the above-mentioned adhesive or soft solder.
電気振動子１は主成分がPbO、TiO2、ZrO2な
どからなるセラミツク体で、円形中央部に開口部
を設けたリング形状を有し、電極膜２ａ，２ｂは
銀系などの厚膜用導電性ペーストの焼結体、ある
いは金属蒸着膜、金属鍍金膜などが用いられてい
た。ノズル板３は、厚さ約50μｍ程度でデイスク
状に加工された金属板が用いられ、その中央部に
は、ノズル孔６の貫通孔（孔径約70〜100μｍ）
が、複数個設けられていた。ボデイー５は金属の
円柱体で上部には、ノズル板３を接合するための
支持部７、その外周部には組立時にノズル板３を
位置決め等するためループ状の側壁８、また支持
部７の中央には凹状の液体室９が設けられ液体室
９からは左右方向に液体通路１０が一対設けられ
ていた。電極膜２ａは、外部リード線接続用電極
である。 The electric vibrator 1 is a ceramic body whose main components are PbO, TiO 2 , ZrO 2 , etc., and has a ring shape with an opening in the center of the circle, and the electrode films 2 a and 2 b are made of thick films such as silver. A sintered body of conductive paste, a metal vapor deposition film, a metal plating film, etc. were used. The nozzle plate 3 is a metal plate processed into a disk shape with a thickness of approximately 50 μm, and a through hole for the nozzle hole 6 (hole diameter approximately 70 to 100 μm) is provided in the center of the nozzle plate 3.
However, there were several. The body 5 is a cylindrical metal body with a support part 7 on the upper part for joining the nozzle plate 3, a loop-shaped side wall 8 on the outer periphery for positioning the nozzle plate 3 during assembly, and a support part 7 for the support part 7. A concave liquid chamber 9 was provided in the center, and a pair of liquid passages 10 were provided from the liquid chamber 9 in the left and right direction. The electrode film 2a is an electrode for connecting an external lead wire.
従来の霧化ポンプは、以上の様にして構成がな
されていた。 Conventional atomizing pumps have been configured as described above.
この構成では、電気振動子１が表に露出されて
いるため、電極膜２ａ，２ｂ間、電極膜２ａと固
着層４ａ間、電極膜２ａとノズル板３間など、こ
の表面に結露または異物の付着が生じ、リーク電
流が誘起され、そのため電気的に発振停止や発振
周波数を変動させ動作を不安定にする欠点があつ
た。 In this configuration, since the electric vibrator 1 is exposed to the surface, there may be condensation or foreign matter on the surface between the electrode films 2a and 2b, between the electrode film 2a and the fixed layer 4a, between the electrode film 2a and the nozzle plate 3, etc. Adhesion occurs and leakage current is induced, which has the disadvantage of electrically stopping oscillation or changing the oscillation frequency, making the operation unstable.
発明の目的
本発明は、かかる従来の欠点を解消するもので
発振停止、発振周波数の不安定性などを除去した
実用性の高い霧化ポンプを提供することを目的と
する。OBJECTS OF THE INVENTION It is an object of the present invention to provide a highly practical atomizing pump that eliminates such conventional drawbacks, such as oscillation stoppage and oscillation frequency instability.
発明の構成
この目的を達成するために本発明は、電気振動
子とノズル板とボデイーを、それぞれ接合後、電
気振動子（引出用リード線他端部を含む）と、ノ
ズル板の一表面を、電気絶縁性と弾性ならびに撥
水性を有する被覆剤で埋込した保護構造からな
る。Structure of the Invention In order to achieve this object, the present invention connects the electric vibrator (including the other end of the lead wire) and one surface of the nozzle plate after joining the electric vibrator, the nozzle plate, and the body, respectively. It consists of a protective structure embedded with a coating material that has electrical insulation, elasticity, and water repellency.
実施例の説明
以下、本発明の一実施例を第２図を用いて説明
する。尚、第１図と同一部材については、同一番
号を付している。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. Note that the same members as in FIG. 1 are given the same numbers.
第２図において、電気振動子１はリング形状
（寸法：外径約φ10mm、内径約φ4mm、厚さ約１mm）
の圧要素子で、その平滑な両面上には、電極膜２
ａ，２ｂが形成された従来と同様のものである。
ノズル板３は、デイスク状の金属薄板で、その中
央部には微細（約100μｍ程度）な貫通穴がノズ
ル孔６として設けられている。電気振動子１の電
極膜２ｂと、ノズル板３の一方の表面は、従来と
同様の方法で固着層４ａを介し、接合がなされて
いる。この様にして接合された振動子ユニツトの
ノズル板３の他方の面は、金属からなるボデイー
５に従来と同様の方法で固着層４ｂを介し、接合
される。ボデイー５には、ノズル板３との接合の
ための支持部７、振動子ユニツト組立時の位置決
めならびに該ユニツト部を保護するために側壁
８、液体を充填する液体室９、液体供給のための
液体通路１０などが設けられている。 In Figure 2, the electric vibrator 1 has a ring shape (dimensions: outer diameter approximately φ10 mm, inner diameter approximately φ4 mm, thickness approximately 1 mm).
The pressure element has an electrode film 2 on its smooth surfaces.
This is the same as the conventional one in which a and 2b are formed.
The nozzle plate 3 is a disk-shaped thin metal plate, and a minute (approximately 100 μm) through hole is provided as a nozzle hole 6 in the center thereof. The electrode film 2b of the electric vibrator 1 and one surface of the nozzle plate 3 are bonded to each other via the fixing layer 4a in a conventional manner. The other surface of the nozzle plate 3 of the vibrator unit thus bonded is bonded to the metal body 5 via the fixing layer 4b in the same manner as in the prior art. The body 5 includes a support part 7 for joining with the nozzle plate 3, a side wall 8 for positioning and protecting the unit when assembling the vibrator unit, a liquid chamber 9 to be filled with liquid, and a liquid chamber 9 for supplying liquid. A liquid passage 10 and the like are provided.
この様にして組立られた霧化ポンプユニツト
は、発振回路（図省略）からの電圧を印加するた
めの接続用にリード線１１ａが、電気振動子１の
電極膜２ａ面に接続される。次に、リード線１１
ａの端部を含め、電気振動子１およびノズル板３
が全体に埋込されるよう、弾性と撥水性を有す被
覆剤１２を充填した。被覆剤１２はシリコーンゴ
ムを選び、充填時、ノズル孔６近傍にはマスク材
を覆い、このゴムが硬化後、除去しノズル孔６付
近は開口部になる様にした。 In the atomizing pump unit assembled in this way, a lead wire 11a is connected to the electrode film 2a surface of the electric vibrator 1 for connection for applying a voltage from an oscillation circuit (not shown). Next, lead wire 11
Electric vibrator 1 and nozzle plate 3, including the end of a
A coating material 12 having elasticity and water repellency was filled so that it was embedded throughout. Silicone rubber was selected as the coating material 12, and at the time of filling, the vicinity of the nozzle hole 6 was covered with a masking material, and after the rubber had hardened, it was removed, leaving the vicinity of the nozzle hole 6 as an opening.
上記構成において、発振回路から電圧印加によ
り、電気振動子１は発振され、固着層４ｂを介し
てノズル板３を加振する。ノズル板３の加振によ
り、液体室９に充填された液体は加圧され、ノズ
ル孔６を介し噴霧化される。この動作時に、電気
振動子１の表面に結露あるいは異物が付着した場
合、リーク電流が生じ、発振停止や発振周波数を
変動させ、噴霧化を不安定にする原因になつてい
た。しかし、本発明の構成では、電気振動子１な
らびにノズル板３の一表面が全体に被覆剤１２で
覆う様、充填されているため、電極膜２ａ，２ｂ
間あるいは電極膜２ａとノズル板３間は絶縁保護
される。従つて、上記の様な事態が生じても、リ
ーク電流の発生は防止できる。そのため、発振停
止や発振周波数の変動のない、安定動作を実現で
きる。また、充填された被覆剤１２は、負荷質量
としてＱ値に作用するが、本構成によれば３〜６
％の効率低下であり、実用的に問題のないレベル
であつた。 In the above configuration, the electric vibrator 1 is oscillated by applying a voltage from the oscillation circuit, and vibrates the nozzle plate 3 via the fixed layer 4b. By the vibration of the nozzle plate 3, the liquid filled in the liquid chamber 9 is pressurized and atomized through the nozzle hole 6. During this operation, if dew condensation or foreign matter adheres to the surface of the electric vibrator 1, a leakage current is generated, causing the oscillation to stop or the oscillation frequency to fluctuate, making atomization unstable. However, in the configuration of the present invention, since one surface of the electric vibrator 1 and the nozzle plate 3 is filled with the coating material 12, the electrode films 2a, 2b
Insulating protection is provided between the electrode film 2a and the nozzle plate 3. Therefore, even if the above situation occurs, leakage current can be prevented from occurring. Therefore, stable operation can be achieved without stopping oscillation or changing the oscillation frequency. In addition, the filled coating material 12 acts on the Q value as a load mass, but according to this configuration, the Q value is 3 to 6.
%, which was at a level that caused no practical problems.
また、本発明の構成によれば以上の他に次の利
点がある。電気振動子１が被覆剤１２で埋込され
るため、露出部が無くなり機械的損傷を受け難い
構造にすることが出来る。被覆剤１２で埋込をし
ているため、薄膜に比べピンホールによる絶縁不
良問題も極めて少ない。リード線１１ａ接続部に
おいても、被覆剤１２を充填しているため、超音
波衝撃を緩和し、超音波衝撃による接続部損傷の
防止効果がある。 Furthermore, the configuration of the present invention has the following advantages in addition to the above. Since the electric vibrator 1 is embedded with the coating material 12, there is no exposed part, and the structure can be made less susceptible to mechanical damage. Since the coating is filled with the coating material 12, the problem of poor insulation due to pinholes is extremely less compared to thin films. Since the connecting portion of the lead wire 11a is also filled with the coating material 12, it is effective in alleviating the ultrasonic impact and preventing damage to the connecting portion due to the ultrasonic impact.
発明の効果
以上のように本発明の霧化ポンプによれば、次
の効果が得られる。Effects of the Invention As described above, according to the atomizing pump of the present invention, the following effects can be obtained.
(1) 電気振動子およびノズル板の一表面を、被覆
剤により埋込した保護構造にすることにより、
結露や異物の付着などによるリーク電流の発生
を防止することができる。従つて、動作時の発
振停止や発振周波数の変動による動作不安定さ
を阻止する効果が得られる。(1) By creating a protective structure in which one surface of the electric vibrator and nozzle plate is embedded with a coating material,
It is possible to prevent leakage current from occurring due to dew condensation or adhesion of foreign matter. Therefore, the effect of preventing oscillation stoppage during operation and instability of operation due to fluctuations in oscillation frequency can be obtained.
第１図は従来の構成による霧化ポンプを示す断
面図、第２図は本発明の一実施例を示す断面図で
ある。
１……電気振動子、２ａ……電極膜、２ｂ……
電極膜、３……ノズル板、４ａ……固着層、４ｂ
……固着層、５……ポデイー、６……ノズル孔、
７……支持部、８……側壁、９……液体室、１０
……液体通路、１１ａ……リード線、１２……被
覆剤。
FIG. 1 is a sectional view showing a conventional atomizing pump, and FIG. 2 is a sectional view showing an embodiment of the present invention. 1... Electric vibrator, 2a... Electrode film, 2b...
Electrode film, 3... Nozzle plate, 4a... Fixed layer, 4b
...Fixed layer, 5...Pody, 6...Nozzle hole,
7...Support part, 8...Side wall, 9...Liquid chamber, 10
...Liquid passage, 11a...Lead wire, 12...Coating material.
Claims (1)
設けた電気振動子と、電気振動子によつて加振さ
れる一ないし一以上のノズル孔を設けたノズル板
と、これらを支持するボデイーとリード線とが、
それぞれ固着層によつて接合される構成からなり
接合後、前記ボデイーの支持部において、前記電
気振動子（前記リード線接続端部を含む）とノズ
ル板の一表面を、電気絶縁性と弾性ならびに撥水
性を有する被覆剤により埋込みした保護構造を有
す霧化ポンプ。1. An electric vibrator having an electrode film on its ring-shaped opposing smooth main surfaces, a nozzle plate having one or more nozzle holes that is excited by the electric vibrator, and supporting these. The body and lead wire are
After bonding, the electric vibrator (including the lead wire connection end) and one surface of the nozzle plate are bonded with electrical insulation, elasticity and Atomization pump with a protective structure embedded in a water-repellent coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2795283A JPS59154161A (en) | 1983-02-22 | 1983-02-22 | Atomizing pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2795283A JPS59154161A (en) | 1983-02-22 | 1983-02-22 | Atomizing pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59154161A JPS59154161A (en) | 1984-09-03 |
| JPS6351066B2 true JPS6351066B2 (en) | 1988-10-12 |
Family
ID=12235224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2795283A Granted JPS59154161A (en) | 1983-02-22 | 1983-02-22 | Atomizing pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59154161A (en) |
-
1983
- 1983-02-22 JP JP2795283A patent/JPS59154161A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59154161A (en) | 1984-09-03 |
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