WO2006007639A1 - Appareil et procede ameliores de nettoyage mettant en oeuvre une combinaison d'electrolyse et d'ultrasons - Google Patents

Appareil et procede ameliores de nettoyage mettant en oeuvre une combinaison d'electrolyse et d'ultrasons Download PDF

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Publication number
WO2006007639A1
WO2006007639A1 PCT/AU2005/001048 AU2005001048W WO2006007639A1 WO 2006007639 A1 WO2006007639 A1 WO 2006007639A1 AU 2005001048 W AU2005001048 W AU 2005001048W WO 2006007639 A1 WO2006007639 A1 WO 2006007639A1
Authority
WO
WIPO (PCT)
Prior art keywords
article
ultrasonic
electrolyte
electrolytic
electrolysis
Prior art date
Application number
PCT/AU2005/001048
Other languages
English (en)
Inventor
Wah-Tong Lee
Original Assignee
Soniclean Pty 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
Priority claimed from AU2004903897A external-priority patent/AU2004903897A0/en
Application filed by Soniclean Pty Ltd filed Critical Soniclean Pty Ltd
Priority to AU2005263177A priority Critical patent/AU2005263177B2/en
Publication of WO2006007639A1 publication Critical patent/WO2006007639A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling

Definitions

  • the present invention relates to an apparatus useful for cleaning a surface using the combined effects of electrolysis and ultrasonics.
  • the surface cleaned by the apparatus and method of the invention may either be electrically conductive material, such as metal, or non-electrically conductive material, such as plastic or wood.
  • Ultrasonic cleaning is used in numerous applications for sterilising and cleaning surfaces.
  • Ultrasonic baths are widely used in the cleaning of small articles such as rings and other jewellery articles. These articles are often small and have complex surface geometries that make simpler washing processes less effective. For example, crevices may be inaccessible by a simple washing process.
  • jewellery items are often relatively delicate and are not suited to harsh physical cleaning treatments that may scratch or otherwise damage the surface. This applies to other metal surfaces to be cleaned.
  • Ultrasonics are also used in cleaning the interior surface of wine barrels.
  • Ultrasonic cleaning is the introduction of high-frequency sound waves into a liquid, usually between 20 to 80 kHz. The resulting action is called "cavitation".
  • Cavitation is created by high and low pressure areas produced in the solution as the sound waves pass through it. In low-pressure areas, microscopic vapour bubbles form. The pressure rises rapidly as the next sound wave pass through the area, violently imploding the minute bubbles and relating the energy that does the cleaning. At 20 kHz, this is happening 20,000 times per second. The resulting cleaning action is very effective on those parts of the article that are directly in the line of sight of the sound wave although less so on those parts of the article that are less exposed to the ultrasonic action.
  • An alternative method of cleaning is the use of electrolysis.
  • an electric current is produced and hydrogen and oxygen are produced at the negative (cathode) and positive (anode) electrodes, respectively, which typically are metal plates positioned in a selected electrolyte.
  • the hydrogen and oxygen thus produced may be captured and used as desired, or may be discarded, depending on the particular application.
  • a pulsating DC voltage is generated and applied to the electrodes.
  • the signal has particular characteristics with values selected such that hydrogen is produced at the cathodic portion of the electrode.
  • the article to be cleaned is attached to and forms a part of the cathode and whilst the current is maintained rapidly acquires a coating of small hydrogen bubbles.
  • the article at the cathode undergoes a process of cathodic reduction and any detritus or oxide material on the surface of the metal is rapidly reduced to the point where it is readily removed from the article.
  • the present invention is directed to a method and apparatus that is able to combine the effects of these two techniques.
  • an apparatus adapted for the treatment of an article in contact with an electrolyte, by the combined application of electrolytic and ultrasonic energy, including: at least one cathode; at least one anode, wherein a current flows through said electrolyte between said anode and said cathode; at least one ultrasonic generator adapted to emit an ultrasonic signal within said electrolyte; wherein said electrolytic and ultrasonic energy is controllably applied to said article.
  • the activity of said ultrasonic generator and said cathode and anode are controlled independently.
  • said article is electrically conductive.
  • said article is electrically non-conductive.
  • said electrically non-conductive article is suspended within said electrolyte.
  • said apparatus is used to clean a wine barrel having a restricted opening.
  • said apparatus includes a first and a second probe adapted to fit through said restricted opening.
  • said first probe is configured to act as an ultrasonic generator and a +ve electrode
  • said second probe is configured to act as an ultrasonic generator and a -ve electrode.
  • said electrolyte is water.
  • an apparatus adapted for cleaning conductive articles by the combined application of electrolytic and ultrasonic energy
  • said apparatus includes: a cleaning vessel having associated therewith means for supporting an article to be cleaned and means for the supply of pulsed electrical power to the article to be cleaned to thereby effect an electrolytic cleaning process; and an ultrasonic generator to thereby effect an ultrasonic cleaning process for the supply, wherein the electrolytic cleaning process and the ultrasonic cleaning process are controlled independently.
  • the means for the supply of pulsed electrical power includes a conductor cable extending around a periphery of the vessel, the conductor being attachable to a connector to which a work support is attached, said work support, in turn, being attachable to said article to be cleaned.
  • said connector includes a pin receivable in a socket in said vessel said socket being electrically connected to said conductor.
  • the apparatus includes a safety shut off mechanism designed to detect a short circuit condition.
  • said conductive article is connected to the cathode.
  • a method for treating an article including the steps of: placing said article in an electrolyte; applying electrolytic energy to said electrolyte; applying ultrasonic energy to said electrolyte; wherein the production of said electrolytic and ultrasonic energies are controlled to thereby treat said article.
  • the production of said electrolytic and ultrasonic energies is controlled independently.
  • Figure 1 illustrates a cleaning apparatus in accordance with a first embodiment of the present invention
  • Figure 2 illustrates in cross sectional view a detail of the apparatus of Figure 1 in a first position
  • Figure 3 illustrates in cross-sectional view a detail of the apparatus of Figure 1 in a second position
  • Figure 4a, 4b & 4c illustrate schematically how the apparatus of the invention operates
  • FIG. 5 illustrates schematically an apparatus in accordance with a second embodiment of the invention
  • Figure 6 illustrates in cross-sectional view an apparatus in accordance with a third embodiment of the invention
  • Figure 7 illustrates in cross-sectional view an apparatus in accordance with a fourth embodiment of the invention.
  • Figure 8 illustrates in cross-sectional view the apparatus of Figure 7 including a shield.
  • FIG. 1 Shown in Figure 1 is an apparatus 10 constructed in accordance with the present invention.
  • the apparatus 10 is thus adapted to perform both an electrolytic cleaning function and an ultrasonic cleaning function.
  • the apparatus 10 includes a bath 12 having a work supporting bar 14 suspended over the bath 12, electrical connectors 16 attached to the bar 14. Not shown in the drawings are a source of direct current electrical power and an ultrasonic generator 18.
  • the bath 12 is generally rectangular, although it will be appreciated that any shape of bath could be used and that the dimensions of the bath are more dependent on the geometry of the article to be cleaned than on any specific physical requirements.
  • the bath 12 is a double skinned bath and thus has an interior volume 20 than can conveniently house the ultrasonic generator 18 and other functional parts.
  • Importantly around an upper periphery of the bath and within the cavity 20 is an electrical conductor 22.
  • the conductor 22 is connected to the DC power supply.
  • the work supporting bar 14 extends diagonally across the bath 12. At each end the work supporting bar 14 is attached to a respective electrical connector 16. A shown in Figures 2 and 3 the electrical connectors 16 are in electrical contact with the conductor 22 and thus the DC power supply.
  • the electrical connectors 16 each consist of a pin element 24 that extends through and forms an electrical contact with the work supporting bar 14.
  • the pin elements 24 have a generally vertically arranged split 26 therein and an upmost insulating sheath 27.
  • the pin elements 24 are each received in a respective connector 28.
  • the connector 28 incudes an outermost electrically insulated nut 30 and an axial conductive tube 32.
  • the conductor 22 is attached to a lower end of the tube 32.
  • the pin 24 is received in the tube 32 and by splaying the pin about the split 26 a secure electrical contact to the tube 32 and thus to the conductor 22 is assured.
  • the drawings in Figures 2 and 3 illustrate how easily the work supporting bar 14 can be disconnected from the conductor 22 simply by grasping the sheath 27 and lifting the pin 24 out of the connector 28.
  • Articles to be cleaned for example, rings 34, are suspended by a conductive wire from the work supporting bar 14.
  • the apparatus 10 is provided with a control unit (not shown) that controls the operation of the unit and permits all of the functions of the unit to be controlled independently.
  • the controller allows:
  • the apparatus 10 can thus operate independently as an ultrasonic cleaning unit, an electrolytic cleaning unit or in combination.
  • Electrolytic cleaning is achieved by applying a pulsating DC current to the unit.
  • the device is wired such that the article to be cleaned is the cathode and the bath 12 is wired as the anode.
  • hydrogen generated will accumulate around the article.
  • a simplified illustration of this process is shown in Figures 4a, 4b and 4c.
  • the article 34 has attached thereto dirt or metal oxide or other material to be removed 36.
  • the bubbles 38 generated in the electrolytic cleaning process are generated around all of the surfaces of the article 34 and, importantly, at the surface of the article, that is, between the article and the surface contaminant. The bubbles 38 therefore serve to partially dislodge the contaminant 36 from the article 34 as illustrated in Figure 4b.
  • the cleaning process is completed by the application of ultrasonics.
  • the ultrasonic process further dislodges the dirt or surface contamination 36, as a result of mechanical interference, further lifting it completely from the surface of the article. It also aids in the dispersion of the bubbles 38 so that the article 34 is not insulated against further electrolysis.
  • a short circuit safety device Not illustrated but also included in the control module is a short circuit safety device. In the event that two or more of the items in the bath 12 touch one another thereby causing a short circuit the safety device will operate to cut off power.
  • the electrolytic cleaning will be carried out in duty cycles, based on 60 seconds cycle for the user. For example, electrolysis may occur in from 20 seconds in a 60 second cycle to a max 60 seconds in a 60 second cycle.
  • the duty cycle rate may be varied between three ranges in a stepped fashion. It is, of course, important to note that these ranges are selected arbitrarily and that any given article to be cleaned and indeed any cleaning apparatus may have entirely different duty cycles.
  • the power level during electrolytic cleaning may be increased in fractions from 2/10 to max 10/10 (amps or amperage) in 5 simplified increments. Each power level is divided into 5 millisecond increments. It is possible to step through and select any duty cycle and power levels and combine these two configurations.
  • Separate electrolysis power patterns and ultrasonic power patterns may be operated or it is possible to combine these two configured process simultaneously.
  • FIG. 5 An alternative form of the invention is illustrated in Figure 5. This illustrates the usefulness of the conductor 22.
  • a multiple of work support bars 14 are each connected through two respective connectors 16 configured as previously described.
  • the unit thus has a great degree of flexibility as to the size and disposition of articles placed with the bath.
  • the apparatus 10 can be in the form of a bath 12 for use in relation to cleaning non-conductive surfaces.
  • the bath 12 includes a conductive insert 40 and an outer non-conductive housing 42 as is well known in the art.
  • a clamp 44 which is connected to a power source (not shown) by way of cable 46 is connected to conductive insert 40.
  • the conductive insert 40 acts as the anode for electrolysis.
  • a probe 48 which is connected to a power source (not shown) by way of cable 50 is suspended in the bath 12 which contains electrolyte 52. Probe 48 is configured to act as a cathode.
  • the non-conducting articles 54 which are being cleaned are placed within tray 56 which is suspended within electrolyte 52.
  • An ultrasonic generator 18 which is connected to a power source (not shown) by cable 58 is also placed within the bath 12.
  • Free radicals 60 such nascent oxygen, are toxic to living organisms and consequently bacteria and other harmful organisms which are in contact with electrolyte 52 are eradicated.
  • chemicals such as chlorine (Cl) and hydrogen peroxide (H 2 O 2 ) may be added if suitable.
  • metallic particles that are known to be harmful to bacteria, such as silver, can be added to the electrolyte 52. These metallic particles are dispersed by the action of the ultrasonic generator 18 and assist in disinfecting the surface being cleaned. This would be particularly useful on articles used in the medical field or in food storage and preparation.
  • the apparatus 10 can be further used for cleaning containers such as wine barrels 62.
  • wine barrels 62 typically include wooden staves 64, metal bands 66 and bung holes 68.
  • the interior surfaces of wine barrels 62 are electrically non-conductive. Consequently, both an anode and a cathode must be inserted into the electrolyte 52 to undertake electrolysis.
  • probes 70 and 72 are inserted through bung hole 68.
  • Probe 70 is connected to a power source by cable 46 and is configured to act as the anode for electrolysis.
  • the probe 72 is connected to a power source by cable 50 and is configured to act as the cathode.
  • the probes 70 and 72 include insulation 74 which prevents the flow of ions in close proximity to the bung hole 68 where the distance between the probes 70 and 72 is the least.
  • the probes 70 and 72 are also adapted to act as ultrasonic generator and are connected to ultrasonic generators (not shown) by cables 56. As the reader would now appreciate, the probes 70 and 72 are configured to both produce free radicals 60 and disperse them throughout the wine barrel 62.
  • the apparatus further includes a shield 76 adapted to restrict the current flow and movement of free radicals 60 within the cleaning fluid 52.
  • the ions will find the shortest or least restrictive path between the anode probe 70 and the cathode probe 72 and consequently the shield 76 ensures that the flow indicated by arrows 78 is diverted from a direct path to ensure the barrel 62 is sufficiently cleaned.
  • Chemicals may also be added to improve conductivity of the electrolyte 52, for instance, salt, sugar or detergent could be added to increase the efficiency of the electrolysis. This would be particularly useful when cleaning articles such as containers used for transporting organs.
  • electrolysis strips material and creates free radicals 60
  • the ultrasonic generator 18 acts to clean and disperse the free radicals 60 within the bath 12.
  • electrolysis creates free radicals 60 which are dispersed by the action of the ultrasonic generator 18.
  • the ultrasonic generator 18 further acts to clean the electrically non-conductive article.
  • the present invention has many applications for cleaning electrically conducting and electrically non ⁇ conducting material.
  • the invention could also be used to sterilise bodies of fluid such as wine or water in fish ponds.
  • the present invention has many advantages over the prior art by combining the effects of electrolysis and ultrasonics. The combination of these two processes enhances each individual method, for instance, the free radicals 60 produced by electrolysis are dispersed by the action of ultrasonic generator 18. Consequently, the present invention increases the effectiveness of the individual techniques. Furthermore, where the water includes large quantities of particles in suspension and hence the effectiveness of the ultrasonic activity may be reduced, electrolysis will be more efficient.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention concerne un procédé et un appareil combinant les effets de l'électrolyse et des ultrasons. L'appareil (10) peut être utilisé pour nettoyer un matériau électriquement conducteur et un matériau électriquement non conducteur. L'électrolyse augmente l'utilisation d'une génératrice d'ultrasons (18) du fait qu'elle contribue à l'élimination de corps étrangers de la surface de l'article nettoyé. De plus, le processus de l'électrolyse crée des radicaux libres (60), tels que l'oxygène naissant, dispersés par les effets de la génératrice d'ultrasons (18). Les radicaux libres (60) sont toxiques pour des organismes vivants et ils sont, par conséquent, capables de détruire des bactéries et d'autres organismes dangereux sur les articles (34, 56, 62) nettoyés. L'invention concerne un appareil de nettoyage amélioré et une unité de stérilisation améliorée grâce à la combinaison des effets de l'électrolyse et des ultrasons.
PCT/AU2005/001048 2004-07-16 2005-07-18 Appareil et procede ameliores de nettoyage mettant en oeuvre une combinaison d'electrolyse et d'ultrasons WO2006007639A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2005263177A AU2005263177B2 (en) 2004-07-16 2005-07-18 An improved apparatus and method for cleaning using a combination of electrolysis and ultrasonics

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2004903897 2004-07-16
AU2004903897A AU2004903897A0 (en) 2004-07-16 An improved apparatus and method for cleaning using a combination of electrolysis and ultrasonics

Publications (1)

Publication Number Publication Date
WO2006007639A1 true WO2006007639A1 (fr) 2006-01-26

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011050400A1 (fr) * 2009-10-26 2011-05-05 Soniclean Pty Ltd Appareil et procédé pour le nettoyage à l'aide d'une combinaison d'électrolyse, d'ultrasons, et de désinfection
CN102925953A (zh) * 2012-11-23 2013-02-13 大久制作(大连)有限公司 机械加工零件专用电解、超声波洗净一体设备
CN108971121A (zh) * 2018-06-19 2018-12-11 江苏比百节能环保科技有限公司 投入式变频超声协同电解水功能的食材清洗净化器
EP3911453A4 (fr) * 2019-01-20 2022-10-12 Applied Materials, Inc. Système de nettoyage sonique et procédé de nettoyage sonique d'une pièce

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710233A (en) * 1984-08-20 1987-12-01 Siemens Aktiengesellschaft Method and apparatus for cleaning, disinfecting and sterilizing medical instruments
AU645718B2 (en) * 1992-01-20 1994-01-20 Marui Galvanizing Co., Ltd. Ultrasonic wave and electrolytic rinsing apparatus
US5409594A (en) * 1993-11-23 1995-04-25 Dynamotive Corporation Ultrasonic agitator
US5795460A (en) * 1996-04-10 1998-08-18 Dynamotive Corporation Method for removal of films from metal surfaces using electrolysis and cavitation action
US5897764A (en) * 1996-02-02 1999-04-27 Mannesmann Aktiengesellschaft Process for the treatment of high-grade steel strips
US6003527A (en) * 1996-10-30 1999-12-21 Pre-Tech Co., Ltd. Cleaning apparatus and a cleaning method
US6425954B1 (en) * 1999-01-04 2002-07-30 Kabushiki Kaisha Sankyo Seiki Seisakusho Hole processing apparatus and method thereof and dynamic pressure bearings cleaning method
JP2002363800A (ja) * 2002-03-26 2002-12-18 Olympus Optical Co Ltd 電極体及び超音波電解洗浄装置
AU772793B2 (en) * 1999-12-27 2004-05-06 Aqua Sonic Service Co., Ltd. Cleaning machine for die used for synthetic resin mould

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710233A (en) * 1984-08-20 1987-12-01 Siemens Aktiengesellschaft Method and apparatus for cleaning, disinfecting and sterilizing medical instruments
AU645718B2 (en) * 1992-01-20 1994-01-20 Marui Galvanizing Co., Ltd. Ultrasonic wave and electrolytic rinsing apparatus
US5409594A (en) * 1993-11-23 1995-04-25 Dynamotive Corporation Ultrasonic agitator
US5897764A (en) * 1996-02-02 1999-04-27 Mannesmann Aktiengesellschaft Process for the treatment of high-grade steel strips
US5795460A (en) * 1996-04-10 1998-08-18 Dynamotive Corporation Method for removal of films from metal surfaces using electrolysis and cavitation action
US6003527A (en) * 1996-10-30 1999-12-21 Pre-Tech Co., Ltd. Cleaning apparatus and a cleaning method
US6425954B1 (en) * 1999-01-04 2002-07-30 Kabushiki Kaisha Sankyo Seiki Seisakusho Hole processing apparatus and method thereof and dynamic pressure bearings cleaning method
AU772793B2 (en) * 1999-12-27 2004-05-06 Aqua Sonic Service Co., Ltd. Cleaning machine for die used for synthetic resin mould
JP2002363800A (ja) * 2002-03-26 2002-12-18 Olympus Optical Co Ltd 電極体及び超音波電解洗浄装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 200313, Derwent World Patents Index; Class P43, AN 2003-133527 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011050400A1 (fr) * 2009-10-26 2011-05-05 Soniclean Pty Ltd Appareil et procédé pour le nettoyage à l'aide d'une combinaison d'électrolyse, d'ultrasons, et de désinfection
AU2010312312B2 (en) * 2009-10-26 2014-11-06 Soniclean Pty Ltd An apparatus and method for cleaning using a combination of electroylsis, ultrasonics and disinfection
CN102925953A (zh) * 2012-11-23 2013-02-13 大久制作(大连)有限公司 机械加工零件专用电解、超声波洗净一体设备
CN108971121A (zh) * 2018-06-19 2018-12-11 江苏比百节能环保科技有限公司 投入式变频超声协同电解水功能的食材清洗净化器
EP3911453A4 (fr) * 2019-01-20 2022-10-12 Applied Materials, Inc. Système de nettoyage sonique et procédé de nettoyage sonique d'une pièce
US11602776B2 (en) 2019-01-20 2023-03-14 Applied Materials, Inc. Sonic cleaning system and method of sonic cleaning a workpiece

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