JPH01281188A - Method and apparatus for controlling cavitation in ultrasonic washing device - Google Patents
Method and apparatus for controlling cavitation in ultrasonic washing deviceInfo
- Publication number
- JPH01281188A JPH01281188A JP28297787A JP28297787A JPH01281188A JP H01281188 A JPH01281188 A JP H01281188A JP 28297787 A JP28297787 A JP 28297787A JP 28297787 A JP28297787 A JP 28297787A JP H01281188 A JPH01281188 A JP H01281188A
- Authority
- JP
- Japan
- Prior art keywords
- cavitation
- solvent
- pressure
- ultrasonic
- cleaning tank
- 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
- 238000000034 method Methods 0.000 title claims description 14
- 238000005406 washing Methods 0.000 title abstract 6
- 239000002904 solvent Substances 0.000 claims abstract description 23
- 238000004140 cleaning Methods 0.000 claims description 31
- 230000000694 effects Effects 0.000 abstract description 5
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000004506 ultrasonic cleaning Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
本発明は超音波洗浄器におけるキャビテーションのコン
トロール方法及びその装置に関し、さらに詳しくは法外
効果のある真性キャビテーションを多数発生させること
ができる超音波洗浄器におけるキャビテーションのコン
トロール方法及びその装置に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method and device for controlling cavitation in an ultrasonic cleaner, and more particularly, to an ultrasonic cleaner that can generate a large number of true cavitations with an extraordinarily effective effect. The present invention relates to a method for controlling cavitation in a cleaning device and an apparatus therefor.
一般に超音波法す器とは、洗浄槽内に超音波振動子を設
け、この超音波振動子を作動させて洗浄槽内に超音波を
発振させ、このときに溶剤中に発生するキャビテーショ
ンを利用し洗浄しようとするものである。In general, an ultrasonic method is an ultrasonic vibrator installed in a cleaning tank, which is operated to oscillate ultrasonic waves in the cleaning tank, and utilizes the cavitation generated in the solvent at this time. This is what you are trying to clean.
ここでキャビテーションとは溶剤中を通過する圧縮波で
ある超音波の減圧時に液体中に空孔のできる現象をさし
、他の発生原因としては静的な負圧力、力学的な力（流
れによるキャビテーション）等がある。Here, cavitation refers to the phenomenon in which pores are formed in a liquid when the pressure is reduced by ultrasonic waves, which are compression waves that pass through a solvent.Other causes of cavitation include static negative pressure, mechanical force (due to flow cavitation) etc.
従来の洗浄器は溶剤の種類に関係なく総てが開散型であ
り、この容器の中に超音波振動子を設けたものを一括し
て超音波洗浄器と称してきた。All conventional cleaners are of the dispersion type, regardless of the type of solvent used, and those in which an ultrasonic vibrator is installed in this container have been collectively referred to as ultrasonic cleaners.
しかしながら、精密な洗浄を要求するユーザーの間では
「有機溶剤（現在フロンが主流）の超音波洗浄は有効で
ない」との不評があった。However, among users who require precise cleaning, there was an unpopular opinion that ``ultrasonic cleaning using organic solvents (currently CFCs are the mainstream) is not effective.''
まず超音波を液体中に発振した場合は、単なる液中の通
過あるいはキャビテーションの発生のいずれかの動作を
とる（発振する超音波の振動数。First, when an ultrasonic wave is oscillated into a liquid, it either simply passes through the liquid or causes cavitation (the frequency of the oscillated ultrasonic wave).
溶剤の液量により差異があるが、ここでは洗浄に有効な
２０キロＨｚから２メガＨｚの超音波に対し、充分な液
ｉｔ、０００ ｃ ｃ以上が存在することを条件とする
）。Although there is a difference depending on the amount of the solvent, the condition here is that there is sufficient liquid for the 20 kHz to 2 MHz ultrasonic waves effective for cleaning.)
ついでキャビテーションの種類としては、脱気性キャビ
テーションと真性キャビテーションとがある。脱気性キ
ャビテーションとは、初期では有機溶剤中の溶解気体が
超音波の刺激により脱気され大暖の泡を発生させるもの
で、時間の経過に伴いこの泡は減少し、後に溶剤自身の
気化した泡を生じ、超音波の洗浄のワークに対する効果
はほとんどない。Next, there are two types of cavitation: deaerated cavitation and intrinsic cavitation. Degassing cavitation is a phenomenon in which, initially, dissolved gas in an organic solvent is degassed by ultrasonic stimulation and generates very warm bubbles.As time passes, these bubbles decrease, and later the solvent itself vaporizes. Foam is generated and ultrasonic cleaning has little effect on the workpiece.
また、泡により超音波の透過性が極単に減衰され、似た
ものとしてバブル洗浄がある。In addition, the permeability of ultrasonic waves is extremely attenuated by bubbles, and a similar technique is bubble cleaning.
真性キャビテーションとは、真空に近い微小気泡が発生
し、極短時間に消滅し、この作用が連続的に行われて強
烈な衝撃波を伴い、これが洗浄に有効となる。Intrinsic cavitation is the generation of microbubbles that are close to a vacuum and disappear in a very short time.This action occurs continuously and is accompanied by an intense shock wave, which is effective for cleaning.
ここで真性キャビテーションは、外部圧力と溶剤液温と
で発生条件が大きく異なるが、従来の洗節方法及び装置
はこれらへの配慮が一切なされていなかった。たまたま
水では常温、常圧下で真性キャビテーションが発生する
ため超音波洗浄の効果が疑問視されなかったが、フロン
等ではこの条件では真性キャビテーションが発生せず（
脱気性キャビチージオンのみが発生）、その結果洗浄効
果を発揮できない洗浄が行われていた。Intrinsic cavitation occurs under different conditions depending on external pressure and solvent temperature, but conventional cavitation methods and devices have not taken these into consideration at all. As it happens, with water, true cavitation occurs at room temperature and under normal pressure, so the effectiveness of ultrasonic cleaning was not questioned, but with chlorofluorocarbons, true cavitation does not occur under these conditions (
(only degassable cavity dione was generated), resulting in cleaning that was not effective.
本発明の目的は、従来の問題点を解消した超音波洗浄器
におけるキャビテーションのコントロール方法及びその
装置を提供することにある。An object of the present invention is to provide a method and apparatus for controlling cavitation in an ultrasonic cleaner, which solves the problems of the conventional method.
本発明は、第１に洗浄槽内の圧力を変化させることを特
徴とする超音波洗浄器におけるキャビテーションのコン
トロール方法であり。The present invention is a method for controlling cavitation in an ultrasonic cleaner, which firstly comprises changing the pressure within a cleaning tank.
第２に洗浄槽内の溶剤温度を変化させることを特徴とす
る超音波洗浄器におけるキャビテーションのコントロー
ル方法であり、
第３に洗浄槽を気密洗浄タンクで形成し、該気密洗浄タ
ンクの圧力を変化させる変圧手段を気密洗浄タンクに配
設し、かつ気密洗浄タンク内の溶剤温度を変化させる調
温手段を設置したことを特徴とする超音波洗浄器におけ
るキャビテーションのコントロール装置である。The second is a method for controlling cavitation in an ultrasonic cleaner, which is characterized by changing the temperature of the solvent in the cleaning tank. The third is a method for controlling cavitation in an ultrasonic cleaner, which is characterized by changing the temperature of the solvent in the cleaning tank. Third, the cleaning tank is formed of an airtight cleaning tank, and the pressure of the airtight cleaning tank is changed. This is a cavitation control device in an ultrasonic cleaner, characterized in that a pressure changing means for changing the temperature of the solvent in the airtight cleaning tank is provided in the airtight cleaning tank, and a temperature control means for changing the temperature of the solvent in the airtight cleaning tank is installed.
つぎに本発明を図面の実施例について説明する。 Next, the present invention will be described with reference to embodiments shown in the drawings.
まず第１の発明における洗浄槽内の圧力を変化させる変
圧手段としては、％布状の洗浄槽１を加圧機２又は減圧
機３と連通して加圧、減圧して圧力調整可能にして行う
。First, the pressure changing means for changing the pressure inside the cleaning tank in the first invention is carried out by communicating the cloth-like cleaning tank 1 with a pressurizer 2 or a pressure reducer 3 to increase or decrease the pressure so that the pressure can be adjusted. .
また第２の発明における、洗浄槽内の溶剤温度を変化さ
せる調温手段としては、洗浄槽ｌに内部冷却パイプ４を
設置し、この内部冷却パイプ４を冷凍機５と接続して溶
剤温度を低下させて温度調整可１距にして行う（なお粘
性の強い溶剤の場合は、加熱を要する場合がある）０図
中符号６は洗浄槽の蓋、７は超音波振動子である。Further, as a temperature control means for changing the temperature of the solvent in the cleaning tank in the second invention, an internal cooling pipe 4 is installed in the cleaning tank l, and this internal cooling pipe 4 is connected to a refrigerator 5 to adjust the temperature of the solvent. The temperature is lowered and the temperature can be adjusted within 1 range (note that heating may be required in the case of highly viscous solvents). In the figure, reference numeral 6 is the lid of the cleaning tank, and 7 is an ultrasonic vibrator.
また第３の発明は、第１図に示す如き形態に組立てられ
る。Further, the third invention is assembled into a form as shown in FIG.
発明者は、第２図に示すアルミ箔（１２Ｑ＋ａｓＸ １
００ｍｍ厚さ０．０１５■Ｉ）を用意し、タンク容量１
０００ｃ ｃ 、材質アルミ、超音波振動子は東北金属
製フェライト−コア型、超音波発振機は周波数２８ＫＨ
ｚ、出力１８０Ｗ（７）実験機に浸漬し、３０秒の超音
波照射によるエロージョン（打Ｉ［）試験を行った。こ
の試験方法は、液中に真性キャビテーションが発生する
と、真空にちがい空洞の急速な消滅により衝撃波が発生
し、同時に微小部分の急激な加熱が行われる。計算上空
洞が独立した系で熱の出入りが無く、かつ真空であると
仮定すると、溶剤を水とした場合の瞬間圧力は約ｔ 、
ｏｏ。The inventor created aluminum foil (12Q+asX 1
00mm thickness 0.015■I), tank capacity 1
000c c, material: aluminum, ultrasonic vibrator: Tohoku Metals ferrite core type, ultrasonic oscillator: frequency: 28KH
z, output 180 W (7) The sample was immersed in an experimental machine and subjected to an erosion (impact I[) test by irradiating it with ultrasonic waves for 30 seconds. In this test method, when intrinsic cavitation occurs in a liquid, a shock wave is generated due to the rapid disappearance of the cavity, unlike a vacuum, and at the same time, a minute portion is rapidly heated. Assuming that the cavity is an independent system with no heat exchange and a vacuum, the instantaneous pressure when the solvent is water is approximately t,
oo.
気圧、温度上昇は約１．０００ ’″Ｋに達する。The atmospheric pressure and temperature rise reach approximately 1.000'K.
この方法により、アルミの薄膜にエロージョンが発生し
、目視可使な客観的データが得られる。With this method, erosion occurs in a thin aluminum film, and objective data that can be viewed and used is obtained.
アルミ箔への３０秒間の超音波照射
によるエロージョンの評価方法
ひとつの打痕の面積を０．０３ｍゴと仮定し、損傷によ
り孔のあいた部分は全面積とし、両者の面積の合計をキ
ャビテーションによる二ロージ賃ンの評価とする。試験
結果として、第３図及び第４図に溶剤として水を用いた
場合、第５図に同食塩水を用いた場合、第６図及び第７
図に同フロン１１３を用いた場合、第８図に同アセトン
を用いた場合、第９図に同ジエチルエーテルを用いた場
合、第１０図に同トリクレンを用いた場合、第１１図及
び第１２図に同メタノールを用いた場合の二ローション
の増減衣を示す。Erosion evaluation method by irradiating aluminum foil with ultrasonic waves for 30 seconds Assuming that the area of one dent is 0.03 m, the area with holes due to damage is the total area, and the sum of the areas of both is the area of damage due to cavitation. This is an evaluation of Rosi Rent. The test results show that when water is used as the solvent in Figures 3 and 4, when the same saline solution is used in Figure 5, and in Figures 6 and 7.
When the same Freon 113 is used in Fig. 8, when the same acetone is used in Fig. 9, when the same diethyl ether is used in Fig. 9, when the same Trichlene is used in Fig. 10, Figs. 11 and 12 The figure shows the increase and decrease in coating of the two lotions when using the same methanol.
上記した試験結果より、溶剤中におけるキャビテーショ
ンの発生量は外部圧力、溶剤の液温の調整（多くの場合
は液温の冷却だが、まれに液温の加熱もある）によりコ
ントロールできることが判明した。The above test results revealed that the amount of cavitation that occurs in the solvent can be controlled by adjusting the external pressure and the temperature of the solvent (in most cases, the liquid temperature is cooled, but in rare cases, the liquid temperature is heated).
よって本発明によれば、最も効率的なキャビテーション
の発生を随時選択することが可能となり、超音波洗浄器
として画期的な洗浄効果を発揮できる。Therefore, according to the present invention, it becomes possible to select the most efficient generation of cavitation at any time, and an epoch-making cleaning effect can be exhibited as an ultrasonic cleaner.
さらに本発明は、微小パリ取りゃ、微小粉砕回転機等に
おけるキャビテーションの発生防止にも利用することが
できる。Further, the present invention can be used to prevent cavitation in micro-pulverizers, micro-pulverizers, etc.
第１図は本発明にかかる超音波洗浄装置の斜視図、第２
図はアルミ試験片の斜視図、第３図乃至第１２図は試験
結果を示す表である。
ｌ・・・・・・・・・ 洗浄器
２・・・・・・・・・ 加圧機
３・・・・・・・・・ 減圧機
４・・・・・・・・・ 内部冷却パイプ５・・・・・・
・・・ 冷凍機
６・・・・・・・・・ 蓋
７・・・・・・・・・ 超音波振動子
時 許 出 願 人 島田金属工業株式会社代理人
弁理士 松 浦 恵 治
第２図
手続補正書（方式）
昭和６３年３月８日FIG. 1 is a perspective view of an ultrasonic cleaning device according to the present invention, and FIG.
The figure is a perspective view of an aluminum test piece, and FIGS. 3 to 12 are tables showing test results. l...... Cleaner 2... Pressurizer 3... Pressure reducer 4... Internal cooling pipe 5・・・・・・
... Refrigerator 6 ...... Lid 7 ...... Ultrasonic vibrator Applicant Agent: Shimada Metal Industry Co., Ltd.
Patent Attorney Keiji Matsuura Diagram 2 Procedural Amendment (Method) March 8, 1986
Claims (1)
波洗浄器におけるキャビテーションのコントロール方法
。 ２、洗浄槽内の溶剤温度を変化させることを特徴とする
超音波洗浄器におけるキャビテーションのコントロール
方法。 ３、洗浄槽を気密洗浄タンクで形成し、該気密洗浄タン
クの圧力を変化させる変圧手段を気密洗浄タンクに配設
し、かつ気密洗浄タンク内の溶剤温度を変化させる調温
手段を設置したことを特徴とする超音波洗浄器における
キャビテーションのコントロール装置。[Claims] 1. A method for controlling cavitation in an ultrasonic cleaner, characterized by changing the pressure within a cleaning tank. 2. A method for controlling cavitation in an ultrasonic cleaner, characterized by changing the temperature of the solvent in the cleaning tank. 3. The cleaning tank is formed of an airtight cleaning tank, and a pressure changing means for changing the pressure of the airtight cleaning tank is provided in the airtight cleaning tank, and a temperature control means is installed for changing the temperature of the solvent in the airtight cleaning tank. A cavitation control device in an ultrasonic cleaner, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28297787A JPH01281188A (en) | 1987-11-11 | 1987-11-11 | Method and apparatus for controlling cavitation in ultrasonic washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28297787A JPH01281188A (en) | 1987-11-11 | 1987-11-11 | Method and apparatus for controlling cavitation in ultrasonic washing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01281188A true JPH01281188A (en) | 1989-11-13 |
Family
ID=17659594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28297787A Pending JPH01281188A (en) | 1987-11-11 | 1987-11-11 | Method and apparatus for controlling cavitation in ultrasonic washing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01281188A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0225088U (en) * | 1988-07-30 | 1990-02-19 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5080663A (en) * | 1973-11-17 | 1975-06-30 | ||
| JPS5624081A (en) * | 1979-08-06 | 1981-03-07 | American Sterilizer Co | Method and apparatus for ultrasonic cleaning and sterilizing in single pressure container |
-
1987
- 1987-11-11 JP JP28297787A patent/JPH01281188A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5080663A (en) * | 1973-11-17 | 1975-06-30 | ||
| JPS5624081A (en) * | 1979-08-06 | 1981-03-07 | American Sterilizer Co | Method and apparatus for ultrasonic cleaning and sterilizing in single pressure container |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0225088U (en) * | 1988-07-30 | 1990-02-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2987068A (en) | Apparatus for ultrasonic cleaning | |
| US7395827B2 (en) | Apparatus to produce acoustic cavitation in a liquid insonification medium | |
| JP2644169B2 (en) | Cleaning by cavitation in liquefied gas | |
| KR101819246B1 (en) | Improved ultrasonic cleaning fluid, method and apparatus | |
| US4907611A (en) | Ultrasonic washing apparatus | |
| WO2003099474A1 (en) | Method and apparatus for producing acoustic cavitation | |
| TW201223652A (en) | Improved ultrasonic cleaning method and apparatus | |
| JPH01281188A (en) | Method and apparatus for controlling cavitation in ultrasonic washing device | |
| JP7014076B2 (en) | Degassing fine bubble liquid manufacturing equipment, degassing fine bubble liquid manufacturing method, ultrasonic processing equipment and ultrasonic processing method | |
| Nomura et al. | Effects of changes in frequency of ultrasonic vibrations on heat transfer | |
| Nomura et al. | Effects of turbulence by ultrasonic vibration on fluid flow in a rectangular channel | |
| JP2000325702A (en) | Device for sterilizing and degassing | |
| EP1645342A1 (en) | Method and apparatus for controlled transient cavitation | |
| GB2237504A (en) | Ultrasonic cleaning | |
| TW466628B (en) | Megasonic cleaner | |
| Lee et al. | Numerical simulation of bubble resonance in an acoustic field | |
| JP2000287988A (en) | Cavitation inhibitor, acoustic coupling material, and ultrasonic transducer | |
| JP4007742B2 (en) | Ultrasonic cleaning method | |
| JP2025028662A (en) | Degassing device and method for ultrasonic deburring system | |
| Kubo et al. | Visualization of acoustically induced cavitation bubbles and microjets with the aid of a high-speed camera | |
| Reinke | Site deactivation techniques for suppression of nucleation in superheated liquid | |
| JPH07204592A (en) | Temp. adjusting method for liquid in vessel performed ultrasonic treatment and device | |
| BE1013029A3 (en) | Ultrasonic cleaning device | |
| JP2789953B2 (en) | CGL up-leg cooler | |
| CN110813906A (en) | A high-efficiency ultrasonic cleaning device with diffusion field cleaning tank |