EP0172263A1 - Méthode et dispositif pour maintenir constante la puissance délivrée par un appareil de nettoyage par ultra-sons - Google Patents

Méthode et dispositif pour maintenir constante la puissance délivrée par un appareil de nettoyage par ultra-sons Download PDF

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Publication number
EP0172263A1
EP0172263A1 EP84109748A EP84109748A EP0172263A1 EP 0172263 A1 EP0172263 A1 EP 0172263A1 EP 84109748 A EP84109748 A EP 84109748A EP 84109748 A EP84109748 A EP 84109748A EP 0172263 A1 EP0172263 A1 EP 0172263A1
Authority
EP
European Patent Office
Prior art keywords
power
generator
power delivery
frequency
ultrasonic cleaning
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.)
Withdrawn
Application number
EP84109748A
Other languages
German (de)
English (en)
Inventor
Dieter Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Martin Walter Ultraschalltechnik GmbH
Original Assignee
Martin Walter Ultraschalltechnik GmbH
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 to DE19833317045 priority Critical patent/DE3317045A1/de
Application filed by Martin Walter Ultraschalltechnik GmbH filed Critical Martin Walter Ultraschalltechnik GmbH
Priority to EP84109748A priority patent/EP0172263A1/fr
Publication of EP0172263A1 publication Critical patent/EP0172263A1/fr
Withdrawn legal-status Critical Current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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0238—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave
    • B06B1/0246—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal
    • B06B1/0253—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal taken directly from the generator circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/70—Specific application
    • B06B2201/71—Cleaning in a tank

Definitions

  • the invention relates to a method for keeping the power output of ultrasonic cleaning systems constant with one (or more) sound transducer (vibrator) acting on the cleaning liquid, which is fed by an ultrasonic generator (HF generator), and an arrangement for carrying out the method.
  • HF generator ultrasonic generator
  • Ultrasonic cleaning generally takes place in a liquid which must be matched to both the material and the structure of the items to be cleaned and the type of soiling.
  • the high tensile and compressive forces which occur in the liquid bath and which cause cavitation, which in turn releases the dirt particles from the items to be cleaned, are used for cleaning.
  • tensile and compressive forces or the maximum cavitation are only achieved when the entire system is in resonance.
  • the resonance conditions shift very strongly under the influence of changes in a wide variety of parameters, from mains voltage fluctuations to temperature changes. This means that a system designed for a certain output will only achieve this output exceptionally or that the desired cleaning performance can only be achieved with meticulous observance of the individual parameter limit values.
  • ultrasonic cleaning systems of this type are therefore always oversized in order to achieve a sufficient cleaning effect even under unfavorable conditions.
  • the desired cleaning action is up to more or less randomly, ie that the effect of the cleaning system between the two extremes - may vary, and is - on the one hand g insufficient cleaning effect, on the other hand, damage to the Cleaner with Rins.
  • a cleaning effect that is too low can, for example, damage the line voltage even when the line voltage drops.
  • the object of the invention is to provide a method and an arrangement for carrying out the method, which ensures the constant, adjustable power output of such an ultrasonic cleaning system.
  • an active power measuring device to form the actual value between the generator, the ultrasonic frequency of which is determined by means of a VCO (voltage controlled oscillator) and the converter, and to connect this measuring device with a differential amplifier p n, which is also via an actuator is supplied with a stabilized setpoint whose output voltage, that is to say the amplified difference between the actual value and setpoint, then controls the VCO.
  • the setpoint can be controlled in the usual way by a controllable, stabilized DC voltage or a corresponding pulsating DC voltage be given.
  • the drawing shows a block diagram of the marked arrangement (FIG. 1) and a frequency / power diagram (FIG. 2).
  • An ultrasound generator 2 operated with line voltage 1 has a VCO 3 as a frequency generator.
  • a power measuring device 5 is inserted between this ultrasonic generator 2 and an ultrasonic transducer 4, the signal of which is fed to a differential amplifier 6.
  • This signal represents the "actual value”: on the other hand, the differential amplifier is supplied with a setpoint 7, ie an adjustable, stabilized DC voltage.
  • the amplified differential voltage that is to say the output voltage of the differential amplifier 6, then forms the control voltage for the VCO 3.
  • the curves shown in FIG. 2 in the power / frequency diagram correspond to the performance curves of the cleaning system under various operating conditions.
  • the lowest curve results in difficult operating conditions, e.g. low temperature, unfavorable fill level, low mains voltage etc., the highest curve with correspondingly positive parameters.
  • Common to all curves is the resonance frequency f. It can be seen directly from this diagram that, if this resonance frequency is observed, there are different outputs, ie different cleaning effects.
  • the frequency is regulated lower (or higher), in the example of curve 8 to the frequency f 1 , in that of curve 9 to the frequency f 2 .
  • the regulation provided according to the invention not only ensures that the power output of the cleaning system is always kept constant, but also that the ultrasound generator 2 and the ultrasound transducer 4 are overloaded due to excessive power consumption - curve 9 in resonance frequency will or damage to the items to be cleaned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP84109748A 1983-05-10 1984-08-16 Méthode et dispositif pour maintenir constante la puissance délivrée par un appareil de nettoyage par ultra-sons Withdrawn EP0172263A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19833317045 DE3317045A1 (de) 1983-05-10 1983-05-10 Verfahren und anordnung zur konstanten leistungsabgabe von ultraschall-reinigungsanlagen
EP84109748A EP0172263A1 (fr) 1983-05-10 1984-08-16 Méthode et dispositif pour maintenir constante la puissance délivrée par un appareil de nettoyage par ultra-sons

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833317045 DE3317045A1 (de) 1983-05-10 1983-05-10 Verfahren und anordnung zur konstanten leistungsabgabe von ultraschall-reinigungsanlagen
EP84109748A EP0172263A1 (fr) 1983-05-10 1984-08-16 Méthode et dispositif pour maintenir constante la puissance délivrée par un appareil de nettoyage par ultra-sons

Publications (1)

Publication Number Publication Date
EP0172263A1 true EP0172263A1 (fr) 1986-02-26

Family

ID=25810673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109748A Withdrawn EP0172263A1 (fr) 1983-05-10 1984-08-16 Méthode et dispositif pour maintenir constante la puissance délivrée par un appareil de nettoyage par ultra-sons

Country Status (2)

Country Link
EP (1) EP0172263A1 (fr)
DE (1) DE3317045A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272084A2 (fr) * 1986-12-15 1988-06-22 Baxter Diagnostics Inc. Dispositif de commande d'une trompe ultrasonore et procédé de poursuite active en fréquence
EP0335851A2 (fr) * 1988-03-30 1989-10-04 Malmros Holding, Inc. Traitement ultrasonique de corps vivants
US5665141A (en) * 1988-03-30 1997-09-09 Arjo Hospital Equipment Ab Ultrasonic treatment process
WO1997049500A1 (fr) * 1996-06-26 1997-12-31 Kimberly-Clark Worldwide, Inc. Appareil et procede de commande d'un transducteur ultrasonique
EP1234566A1 (fr) * 2001-02-23 2002-08-28 Matsushita Electric Works, Ltd. Appareil pour traitement cosmétique par ultrasons

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3625149A1 (de) * 1986-07-25 1988-02-04 Herbert Dipl Ing Gaessler Verfahren zur phasengesteuerten leistungs- und frequenzregelung eines ultraschallwandlers sowie vorrichtung zur durchfuehrung des verfahrens
EP0319631A1 (fr) * 1987-11-09 1989-06-14 Emerson Electric Co. Procédé de commande d'un générateur ultrasonore
US5305737A (en) * 1988-03-30 1994-04-26 Arjo Inc. Ultrasonic treatment system
DE3840583A1 (de) * 1988-12-02 1990-06-07 Volker Ulrich Boehringer Verfahren zum beruehrungslosen, eruptiven entfernen von sediment und sonstigen ablagerungen
US5585546A (en) * 1994-10-31 1996-12-17 Hewlett-Packard Company Apparatus and methods for controlling sensitivity of transducers
DE102005030777B4 (de) * 2005-07-01 2016-10-20 Martin Walter Ultraschalltechnik Ag Verfahren und Schaltungsanordnung zum Betreiben eines Ultraschall-Schwingers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975650A (en) * 1975-01-30 1976-08-17 Payne Stephen C Ultrasonic generator drive circuit
GB2099594A (en) * 1981-05-16 1982-12-08 Hilbre Ultrasonics Ltd Indicating power developed by ultrasonic transducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975650A (en) * 1975-01-30 1976-08-17 Payne Stephen C Ultrasonic generator drive circuit
GB2099594A (en) * 1981-05-16 1982-12-08 Hilbre Ultrasonics Ltd Indicating power developed by ultrasonic transducer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272084A2 (fr) * 1986-12-15 1988-06-22 Baxter Diagnostics Inc. Dispositif de commande d'une trompe ultrasonore et procédé de poursuite active en fréquence
EP0272084A3 (en) * 1986-12-15 1989-08-02 Baxter International Inc. (A Delaware Corporation) Ultrasonic horn driving apparatus and method with active frequency tracking
EP0335851A2 (fr) * 1988-03-30 1989-10-04 Malmros Holding, Inc. Traitement ultrasonique de corps vivants
EP0335851A3 (fr) * 1988-03-30 1991-03-13 Malmros Holding, Inc. Traitement ultrasonique de corps vivants
US5665141A (en) * 1988-03-30 1997-09-09 Arjo Hospital Equipment Ab Ultrasonic treatment process
WO1997049500A1 (fr) * 1996-06-26 1997-12-31 Kimberly-Clark Worldwide, Inc. Appareil et procede de commande d'un transducteur ultrasonique
US5892315A (en) * 1996-06-26 1999-04-06 Gipson; Lamar Heath Apparatus and method for controlling an ultrasonic transducer
US5900690A (en) * 1996-06-26 1999-05-04 Gipson; Lamar Heath Apparatus and method for controlling an ultrasonic transducer
EP1234566A1 (fr) * 2001-02-23 2002-08-28 Matsushita Electric Works, Ltd. Appareil pour traitement cosmétique par ultrasons

Also Published As

Publication number Publication date
DE3317045A1 (de) 1984-11-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19870723

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Inventor name: WEBER, DIETER