JPS61227866A - Ultrasonic liquid atomizer - Google Patents
Ultrasonic liquid atomizerInfo
- Publication number
- JPS61227866A JPS61227866A JP6869185A JP6869185A JPS61227866A JP S61227866 A JPS61227866 A JP S61227866A JP 6869185 A JP6869185 A JP 6869185A JP 6869185 A JP6869185 A JP 6869185A JP S61227866 A JPS61227866 A JP S61227866A
- Authority
- JP
- Japan
- Prior art keywords
- atomizer
- liq
- ultrasonic
- ultrasonic liquid
- liquid atomizer
- 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
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)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Description
【発明の詳細な説明】 (産業上の利用分野) 本発明は、耐久性に優れた超音波液体霧化器に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to an ultrasonic liquid atomizer with excellent durability.
(従来の技術)
従来の超音波液体霧化器としては、第4図に示すように
、圧電振動子の前後を金属製のブロックで挾んでボルト
で固定し、先端に霧化面を有するものがある。第4図に
おいて、1は金属製前部ホーン、2は後部ブロック、3
は圧電振動子、4は電極板、5は前部ホーンとのねじ締
めKよシ圧電振動子3を固定するボルト、6は霧化器を
支持するフランジ、7は前部ホーン及び後部ブロックの
中心軸を貫通する液導入路、8は霧化部である。この第
4図の構成による超音波液体霧化器においては、電極板
4は振動の節となって振動速度が零になり、霧化部8は
振動の腹となって振動速度が最大となる。そして、前部
ホーン先端の直径は他の部分よりも小さくなっており、
この効果として。(Prior art) As shown in Fig. 4, a conventional ultrasonic liquid atomizer is one in which a piezoelectric vibrator is sandwiched between metal blocks at the front and back and fixed with bolts, and has an atomizing surface at the tip. There is. In Fig. 4, 1 is a metal front horn, 2 is a rear block, and 3 is a metal front horn.
4 is a piezoelectric vibrator, 4 is an electrode plate, 5 is a screw K for fixing the piezoelectric vibrator 3 to the front horn, 6 is a flange that supports the atomizer, and 7 is a screw for the front horn and rear block. A liquid introduction path 8 passing through the central axis is an atomizing section. In the ultrasonic liquid atomizer having the configuration shown in FIG. 4, the electrode plate 4 becomes a node of vibration and the vibration speed becomes zero, and the atomization part 8 becomes a vibration antinode and the vibration speed becomes maximum. . The diameter of the front horn tip is smaller than the other parts,
As this effect.
霧化部の振動速度が増大する。The vibration speed of the atomizer increases.
(発明の解決しようとする問題点)
上記の場合ホーンに従来用いられていたアルミ合金やチ
タン合金では、霧化面で発生する大きな振動速度および
加速度に耐えられず、キャビテーションを起こして腐食
され易い。さらに、a化される液体に水などを使用する
場合には、特に腐食が問題になる。(Problem to be solved by the invention) In the above case, the aluminum alloys and titanium alloys conventionally used for the horn cannot withstand the high vibration speed and acceleration that occur on the atomization surface, and are susceptible to cavitation and corrosion. . Furthermore, when water or the like is used as the liquid to be converted into a, corrosion becomes a particular problem.
本発明は上記の点にかんがみ、振動によるキャビテーシ
ョン、および液体による腐食の両方を防止し、長寿命で
安定な超音波液体霧化器を提供することを目的とする。In view of the above points, it is an object of the present invention to provide an ultrasonic liquid atomizer that prevents both cavitation caused by vibration and corrosion caused by liquid, and has a long life and is stable.
(問題点を解決するための手段)
本発明は、前部ホーンと後部ブロックとにより圧電振動
子を挾持する構造の超音波液体霧化器において、前部ホ
ーンの前方部分がセラミック材からなる超音波液体霧化
器に関する。(Means for Solving the Problems) The present invention provides an ultrasonic liquid atomizer having a structure in which a piezoelectric vibrator is sandwiched between a front horn and a rear block, in which the front portion of the front horn is made of a ceramic material. Relating to a sonic liquid atomizer.
とを螺合等の機械的方法で締結する。セラミックを使用
する前部ホーンの前方部分には霧化部又は霧化部及び振
動増幅部を含むことが好ましい。and are fastened together by a mechanical method such as screwing. Preferably, the front portion of the front horn using ceramic includes an atomizing section or an atomizing section and a vibration amplifying section.
本発明に使用するセラミックは、室温で引張り強さが3
0 kg / mm”以上及びヤング率り0tOn/m
m2以上の高強度及び高弾性のものが好ましく、加えて
破壊靭性4MN/m 以上の高靭性を有するものであ
れば更に好ましい。このようなものとしてホン) 7’
vス炭化ケイ素、ホットプレスジルコニア等がある。The ceramic used in the present invention has a tensile strength of 3 at room temperature.
0 kg/mm" or more and Young's modulus 0 tOn/m
It is preferable to have high strength and high elasticity of 4 MN/m 2 or more, and even more preferable if it has high fracture toughness of 4 MN/m 2 or more. something like this) 7'
Vs silicon carbide, hot pressed zirconia, etc.
上記前部ホーンの超音波液体霧化器への取付けは公知の
方法により特に制限はない。There are no particular limitations on how to attach the front horn to the ultrasonic liquid atomizer using a known method.
(実施例) 以下実施例を説明する。(Example) Examples will be described below.
実施例1
第1図及び第2図は本発明の一実施例になる超音波液体
霧化器の半断面正面図及び斜視図である。Embodiment 1 FIGS. 1 and 2 are a half-sectional front view and a perspective view of an ultrasonic liquid atomizer according to an embodiment of the present invention.
図において1は先端の霧化部8に引張シ強度30kg/
圓2.ヤング率4Qtor+7印2及び破壊靭性4MN
/m”のホットプレス炭化ケイ素のセラミック材ヲアル
ミニウムの前部ブロック10にねじ止めした前部ホーン
である。銅製電極板4を挾んだPzTの圧電振動子3,
3ヲ前配前部ホーン1とアルミニウム製の後部ブロック
2で挾持し、鋼製ボルト5を前部ブロック10にねじ止
めにより固定し超音波液体霧化器とした。尚7は前部ホ
ーン1及びボルト5の中心軸を貫通する液導入路、6は
霧化器を支持するフランジである。In the figure, 1 has a tensile strength of 30 kg/
Circle 2. Young's modulus 4Qtor+7 mark 2 and fracture toughness 4MN
The front horn is made of a hot-pressed silicon carbide ceramic material with a diameter of 1.5 mm and is screwed to an aluminum front block 10.A PzT piezoelectric vibrator 3 sandwiching a copper electrode plate 4,
3 was sandwiched between a front horn 1 and a rear block 2 made of aluminum, and a steel bolt 5 was fixed to the front block 10 by screwing to obtain an ultrasonic liquid atomizer. Note that 7 is a liquid introduction passage passing through the central axis of the front horn 1 and the bolt 5, and 6 is a flange that supports the atomizer.
実施例2
実施例1における霧化部8にホットプレス炭化ケイ素に
代えて引張り強さ50kg/mm2.ヤング率30 t
on /nun2及び破壊靭性8MN/m のホット
プレス正方晶系ジルコニアのセラミック材を用いた超音
波液体霧化器を作成した。Example 2 In place of the hot-pressed silicon carbide in the atomization part 8 in Example 1, a tensile strength of 50 kg/mm2 was used. Young's modulus 30t
An ultrasonic liquid atomizer was created using a hot-pressed tetragonal zirconia ceramic material with on/nun2 and fracture toughness of 8 MN/m2.
比較例
第4図に示す前部ホーン1を全部アルミニウムにした以
外は実施例1と同一構成の超音波液体霧化器を得た。前
記実施例1.実施例2及び比較例の超音波液体霧化器に
ついて、駆動電力10W。Comparative Example An ultrasonic liquid atomizer having the same construction as in Example 1 was obtained, except that the front horn 1 shown in FIG. 4 was entirely made of aluminum. Said Example 1. The driving power of the ultrasonic liquid atomizers of Example 2 and Comparative Example was 10 W.
周波数50KHzで水を毎分50m/噴霧する条件で寿
命試験を行なった。その結果は第1表に示す通り実施例
の超音波液体霧化器は比較例のものよ#)20倍以上に
なることが示される。A life test was conducted under conditions of spraying water at a frequency of 50 KHz at a rate of 50 m/min. As shown in Table 1, the results show that the ultrasonic liquid atomizer of the example is more than 20 times that of the comparative example.
第1表
実施例3
第3図は外周が指数関数の曲線を有する振動増幅部9及
び霧化部8をホットプレス炭化ケイ素のセラミック材と
した超音波液体霧化器の構造を示す実施例で、該セラミ
ック材はアルミニウム円筒の前部ブロック11にねじ止
めされる。他の部分の構造は実施例1と同一である。Table 1 Example 3 Figure 3 shows an example of the structure of an ultrasonic liquid atomizer in which the vibration amplifying part 9 and the atomizing part 8, each having an exponential curve on the outer periphery, and the atomizing part 8 are made of hot-pressed silicon carbide ceramic material. , the ceramic material is screwed to the front block 11 of an aluminum cylinder. The structure of other parts is the same as in the first embodiment.
(発明の効果)
本発明によれば、霧化部におけるキャビテーション、キ
ャビテーションによる腐食の進行が抑制されるから長寿
命の超音波液体霧化器が得られる。(Effects of the Invention) According to the present invention, an ultrasonic liquid atomizer with a long life can be obtained because cavitation in the atomization section and the progress of corrosion due to cavitation are suppressed.
第1図及び第2図は本発明の実施例になる超音波液体霧
化器の断面図及び斜視図、第3図は本発明の他の実施例
になる超音波液体霧化器の断面図。
第4図は従来の超音波液体霧化器の断面図である。
符号の説明
1・・・前部ホーン 2・・・後部ブロック3・
・・圧電振動子 4・・・電極板5・・・ボルト
6・・・フランジ7・・・液導入路
8・・・霧化部9・・・振動増幅部 10.
11・・・前部ブロック6一1 and 2 are a sectional view and a perspective view of an ultrasonic liquid atomizer according to an embodiment of the present invention, and FIG. 3 is a sectional view of an ultrasonic liquid atomizer according to another embodiment of the present invention. . FIG. 4 is a sectional view of a conventional ultrasonic liquid atomizer. Explanation of symbols 1...Front horn 2...Rear block 3.
... Piezoelectric vibrator 4 ... Electrode plate 5 ... Bolt 6 ... Flange 7 ... Liquid introduction path
8...Atomization section 9...Vibration amplification section 10.
11...Front block 6-
Claims (1)
持する構造の超音波液体霧化器において、前部ホーンの
前方部分がセラミック材からなる超音波液体霧化器。1. An ultrasonic liquid atomizer having a structure in which a piezoelectric vibrator is held between a front horn and a rear block, in which the front part of the front horn is made of a ceramic material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6869185A JPS61227866A (en) | 1985-04-01 | 1985-04-01 | Ultrasonic liquid atomizer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6869185A JPS61227866A (en) | 1985-04-01 | 1985-04-01 | Ultrasonic liquid atomizer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61227866A true JPS61227866A (en) | 1986-10-09 |
Family
ID=13381033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6869185A Pending JPS61227866A (en) | 1985-04-01 | 1985-04-01 | Ultrasonic liquid atomizer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61227866A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63136759U (en) * | 1987-02-27 | 1988-09-08 | ||
JPH01155959A (en) * | 1987-12-12 | 1989-06-19 | Tdk Corp | Ultrasonic atomizer |
JPH03296472A (en) * | 1990-04-16 | 1991-12-27 | Nippon Seiki Seisakusho:Kk | Ultrasonic vibration transmitting body |
KR100696140B1 (en) * | 2001-04-17 | 2007-03-21 | 주식회사 진성피에조텍 | Ultrasonic atomizer for liquid fuel using ceramic vibrator |
CN103331251A (en) * | 2013-06-04 | 2013-10-02 | 常州大学 | Ultrasonic transducer used in strong-acid environment |
WO2023052904A1 (en) * | 2021-10-01 | 2023-04-06 | 3M Innovative Properties Company | Ultrasonic dispensing device |
WO2024047386A1 (en) * | 2022-09-03 | 2024-03-07 | Baltic Freya, Uab | Uncloggable agricultural aerosol generator for field and controlled environment agriculture |
-
1985
- 1985-04-01 JP JP6869185A patent/JPS61227866A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63136759U (en) * | 1987-02-27 | 1988-09-08 | ||
JPH0536533Y2 (en) * | 1987-02-27 | 1993-09-16 | ||
JPH01155959A (en) * | 1987-12-12 | 1989-06-19 | Tdk Corp | Ultrasonic atomizer |
JPH03296472A (en) * | 1990-04-16 | 1991-12-27 | Nippon Seiki Seisakusho:Kk | Ultrasonic vibration transmitting body |
KR100696140B1 (en) * | 2001-04-17 | 2007-03-21 | 주식회사 진성피에조텍 | Ultrasonic atomizer for liquid fuel using ceramic vibrator |
CN103331251A (en) * | 2013-06-04 | 2013-10-02 | 常州大学 | Ultrasonic transducer used in strong-acid environment |
WO2023052904A1 (en) * | 2021-10-01 | 2023-04-06 | 3M Innovative Properties Company | Ultrasonic dispensing device |
WO2024047386A1 (en) * | 2022-09-03 | 2024-03-07 | Baltic Freya, Uab | Uncloggable agricultural aerosol generator for field and controlled environment agriculture |
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