DE10350408A1 - Cavitation and non cavitation zones spatial arrangement and movement controlling method for liquid and pasty medium, involves changing amplitudes and relative phase positions of two ultrasonic transducers - Google Patents

Cavitation and non cavitation zones spatial arrangement and movement controlling method for liquid and pasty medium, involves changing amplitudes and relative phase positions of two ultrasonic transducers Download PDF

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Publication number
DE10350408A1
DE10350408A1 DE10350408A DE10350408A DE10350408A1 DE 10350408 A1 DE10350408 A1 DE 10350408A1 DE 10350408 A DE10350408 A DE 10350408A DE 10350408 A DE10350408 A DE 10350408A DE 10350408 A1 DE10350408 A1 DE 10350408A1
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Germany
Prior art keywords
cavitation
zones
ultrasonic transducers
liquid
relative phase
Prior art date
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Ceased
Application number
DE10350408A
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German (de)
Inventor
Reinhard Sobotta
Christoph Dr. Jung
Robert Dr. Mettin
Hans Rehm
Werner Prof. Dr. Lauterborn
Dagmar Krefting
Reinhard Geisler
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Elma Hans Schmidbauer & Co KG GmbH
SCHMIDBAUER KG ELMA HANS
Original Assignee
Elma Hans Schmidbauer & Co KG GmbH
SCHMIDBAUER KG ELMA HANS
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Application filed by Elma Hans Schmidbauer & Co KG GmbH, SCHMIDBAUER KG ELMA HANS filed Critical Elma Hans Schmidbauer & Co KG GmbH
Priority to DE10350408A priority Critical patent/DE10350408A1/en
Publication of DE10350408A1 publication Critical patent/DE10350408A1/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/70—Cleaning devices specially adapted for surgical instruments

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pathology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The method involves changing amplitudes and relative phase positions of two ultrasonic transducers. Power and frequency of each ultrasonic transducer are controlled for widening cavitation and non-cavitation zones in a liquid and pasty medium. Portions of the medium are cleaned and surface treated such that the cavitation and non-cavitation zones are arranged at certain surface areas of the portions.

Description

Die Erfindung betrifft die Anwendung von Ultraschall für die Reinigung von Teilen in flüssigen Medien in Tauchbädern. Sie betrifft auch die Behandlung flüssiger und pastöser Medien selbst mit Ultraschall. In beiden Anwendungsfällen dient der Ultraschall zur Erzeugung von Kavitation im betreffenden Medium (ultraschallinduzierte Kavitation).The Invention relates to the use of ultrasound for cleaning of parts in liquid Media in dipping baths. It also concerns the treatment of liquid and pasty media even with ultrasound. In both cases, the ultrasound is used for generating cavitation in the respective medium (ultrasound-induced Cavitation).

Kavitation tritt in räumlichen Bereichen des Mediums (Kavitationszonen) auf, die durch die Frequenz, die Leistung, die Geometrie und Anordnung der Ultraschallwandler bestimmt werden. Dort überschreitet der Schalldruck einen Schwellwert und ermöglicht so Kavitation.cavitation occurs in spatial Areas of the medium (cavitation zones) due to the frequency, the power, geometry and arrangement of the ultrasonic transducers be determined. There exceeds the sound pressure is a threshold and thus allows cavitation.

Daraus und durch die Überlagerung der Elementarwellen der einzelnen Ultraschallwandler ergeben sich Kavitationszonen, deren Lage durch Minima und Maxima des Schalldruckes räumlich festgelegt ist.from that and by the overlay The elementary waves of the individual ultrasonic transducers arise Cavitation zones, their location by minima and maxima of the sound pressure spatial is fixed.

In Leistungsultraschallgeräten werden üblicherweise mehrere Ultraschallwandler elektrisch parallel geschaltet und somit mit dem gleichen Betrag der Amplitude und gleicher Phase betrieben. Bekannt ist auch die Variation der Frequenz zur Verbreiterung der Kavitationszonen (Sweep, Wobbeln, Multifrequenz, ...). Auch wenn mehrere Ultraschallgeneratoren eingesetzt werden, werden die Generatoren üblicherweise nicht frequenzsynchron betrieben, wodurch eine Schwebung entsteht. Die räumliche Lage der Kavitationszonen im Medium ist somit in diesen Beispielen nicht der beabsichtigten oben genannten Anwendung angepasst. Im Unterschied dazu ist die Erfindung darauf gerichtet, die räumliche Anordnung und eine Bewegung der Kavitationszonen im Medium für die oben genannten Anwendungen im Nahfeld zielgerichtet zu steuern.In Power ultrasound devices become common several ultrasonic transducers electrically connected in parallel and thus operated with the same amount of amplitude and same phase. Also known is the variation of the frequency to broaden the Cavitation zones (sweep, wobble, multifrequency, ...). Even if Several ultrasonic generators are used, the generators are usually not frequency synchronously operated, whereby a beating arises. The spatial Location of the cavitation zones in the medium is thus in these examples not adapted to the intended above application. in the In contrast, the invention is directed to the spatial Arrangement and movement of the cavitation zones in the medium for the above targeted applications in the near field.

Die Steuerung der räumlichen Ausbreitung von Schall ist aus der Sonar- und Radartechnik bekannt. Hierbei handelt es sich aber um eine lineare Schallausbreitung zur Detektion oder Navigation im Fernfeld des Wandlers. Im Unterschied dazu ist der Zweck dieser Erfindung, die räumliche Lage der Zonen der nichtlinearen Kavitation im Nahfeld der Wandler zu steuern.The Control of spatial Propagation of sound is known from sonar and radar technology. But this is a linear sound propagation to the Detection or navigation in the far field of the transducer. In difference For this purpose, the purpose of this invention, the spatial position of the zones of the to control nonlinear cavitation in the near field of the transducer.

Zur Realisierung der Erfindung wird eine Steuerung der Kavitationszonen in flüssigen und pastösen Medien durch gesteuerte Phasenverschiebung zwischen mindestens 2 Ultraschallwandlern bewirkt. Hierdurch wird im einfachsten Fall der Ausbreitung ebener Wellen von 2 gegenüberliegenden Wandlern eine Wanderwelle erzeugt (s. 1). Die Kavitationszonen folgen dabei den Maxima der Wanderwelle.To realize the invention, a control of the cavitation zones in liquid and pasty media is effected by controlled phase shifting between at least 2 ultrasonic transducers. As a result, in the simplest case of the propagation of plane waves of 2 opposing transducers, a traveling wave is generated (s. 1 ). The cavitation zones follow the maxima of the traveling wave.

Bei Anordnung von mindestens 2 Ultraschallwandlern in einer Ebene wird auf gleiche Weise ein Schwenken der Kavitationszonen bewirkt (s. 2).When at least 2 ultrasonic transducers are arranged in one plane, the cavitation zones are pivoted in the same way (see FIG. 2 ).

Bei entsprechender räumlicher Anordnung (s. 3) der Wandler kann auf gleiche Weise ein gewünschtes Muster von Kavitationszonen gesteuert erzeugt werden.With appropriate spatial arrangement (s. 3 ) the transducer can be generated in the same way controlled a desired pattern of cavitation zones.

Claims (4)

Verfahren zur Steuerung der räumlichen Anordnung und Bewegung ultraschallinduzierter Kavitationszonen und nicht kavitierender Zonen im flüssigen oder pastösen Medium mit mindestens 2 Ultraschallwandlern gekennzeichnet durch eine Änderung ihrer Amplituden und/oder ihrer relativen Phasenlagen.Method for controlling the spatial arrangement and movement ultrasound-induced cavitation zones and non-cavitating Zones in the liquid or pasty Medium characterized by at least 2 ultrasonic transducers a change in her Amplitudes and / or their relative phase angles. Verfahren nach Anspruch 1 mit zusätzlicher Steuerung und/oder Regelung der Leistungen und/oder Frequenzen.Method according to claim 1 with additional control and / or Regulation of the services and / or frequencies. Verfahren nach Anspruch 1 oder 2 zur Reinigung und/oder Oberflächenbehandlung von Teilen, derart dass die Kavitationszonen oder die nicht kavitierenden Zonen gezielt auf bestimmte Oberflächenbereiche der Teile einwirken.Process according to Claim 1 or 2 for the purification and / or surface treatment of parts, such that the cavitation zones or the non-cavitating Zones targeted to specific surface areas of the parts act. Verfahren nach Anspruch 1 oder 2 dadurch gekennzeichnet, dass die Kavitation auf bestimmte Volumenbereiche oder alle Volumenbereiche des Mediums gleichmäßig einwirkt.Method according to claim 1 or 2, characterized that the cavitation on certain volume areas or all volume areas of the medium acts evenly.
DE10350408A 2003-10-28 2003-10-28 Cavitation and non cavitation zones spatial arrangement and movement controlling method for liquid and pasty medium, involves changing amplitudes and relative phase positions of two ultrasonic transducers Ceased DE10350408A1 (en)

Priority Applications (1)

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DE10350408A DE10350408A1 (en) 2003-10-28 2003-10-28 Cavitation and non cavitation zones spatial arrangement and movement controlling method for liquid and pasty medium, involves changing amplitudes and relative phase positions of two ultrasonic transducers

Applications Claiming Priority (1)

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DE10350408A DE10350408A1 (en) 2003-10-28 2003-10-28 Cavitation and non cavitation zones spatial arrangement and movement controlling method for liquid and pasty medium, involves changing amplitudes and relative phase positions of two ultrasonic transducers

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DE10350408A1 true DE10350408A1 (en) 2005-06-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017194839A1 (en) * 2016-05-13 2017-11-16 Altum Technologies Oy A system and a method for cleaning of a device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6276370B1 (en) * 1999-06-30 2001-08-21 International Business Machines Corporation Sonic cleaning with an interference signal
US6290778B1 (en) * 1998-08-12 2001-09-18 Hudson Technologies, Inc. Method and apparatus for sonic cleaning of heat exchangers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6290778B1 (en) * 1998-08-12 2001-09-18 Hudson Technologies, Inc. Method and apparatus for sonic cleaning of heat exchangers
US6276370B1 (en) * 1999-06-30 2001-08-21 International Business Machines Corporation Sonic cleaning with an interference signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017194839A1 (en) * 2016-05-13 2017-11-16 Altum Technologies Oy A system and a method for cleaning of a device

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