EP0542016B1 - Bain de nettoyage à ultrason - Google Patents

Bain de nettoyage à ultrason Download PDF

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Publication number
EP0542016B1
EP0542016B1 EP92118228A EP92118228A EP0542016B1 EP 0542016 B1 EP0542016 B1 EP 0542016B1 EP 92118228 A EP92118228 A EP 92118228A EP 92118228 A EP92118228 A EP 92118228A EP 0542016 B1 EP0542016 B1 EP 0542016B1
Authority
EP
European Patent Office
Prior art keywords
lambda
frequency
resonator
sound
length
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.)
Revoked
Application number
EP92118228A
Other languages
German (de)
English (en)
Other versions
EP0542016A3 (en
EP0542016A2 (fr
Inventor
Martin Walter
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6444427&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0542016(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Martin Walter Ultraschalltechnik GmbH filed Critical Martin Walter Ultraschalltechnik GmbH
Publication of EP0542016A2 publication Critical patent/EP0542016A2/fr
Publication of EP0542016A3 publication Critical patent/EP0542016A3/de
Application granted granted Critical
Publication of EP0542016B1 publication Critical patent/EP0542016B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/02—Synthesis of acoustic waves
    • 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
    • B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency

Definitions

  • the invention relates to a method for generating and emitting ultrasonic energy in liquids, in particular for sonicating ultrasonic cleaning baths by means of a sound transducer, that is to say an oscillating element with an attached rod-shaped or tubular resonator immersed in the liquid.
  • a sound transducer that is to say an oscillating element with an attached rod-shaped or tubular resonator immersed in the liquid.
  • f (25) has the length lambda / 2 (25) or an integer multiple thereof.
  • the sound transducer When using such sound transducers in ultrasonic cleaning baths or systems, the sound transducer is attached to the wall of a liquid container in such a way that the sound-emitting part, ie the rod-shaped or tubular resonator, is in the liquid.
  • the longitudinal vibration transmitted to the resonator by the oscillating element is partially converted into transverse vibrations, so that the ultrasonic energy is radiated both in the longitudinal direction of the resonator and radially thereto.
  • only radial radiation is desired; the radiation emanating in the longitudinal direction, that is to say from the end face of the rod-shaped (tubular) sound-emitting resonator, cannot normally be utilized.
  • the sonication is often not sufficient, particularly in the case of ultrasonic cleaning baths, since the ultrasonic energy is emitted in the form of a sinusoidal oscillation over the length of the resonator, that is to say with pronounced maxima and minimae.
  • the sinusoidal oscillation coincides with the wavelength lambda, so that for example with a resonator of length 3/2 lambda there are four nodes with zero energy at three maxima. Parts that are located in the ultrasound cleaning baths at the nodes, i.e. with 0 radiation, are not sonicated and therefore not cleaned.
  • the aim of the invention is to provide a possibility of how this different energy distribution is compensated for over the length of the resonator or how a largely uniform sound system is used the liquid and thus the parts in the liquid can be brought about.
  • This is achieved in a manner according to the invention in that the sound transducer continuously or in intervals alone or in intervals simultaneously with the main frequency f (25) with at least one further frequency f (n) , corresponding to an integer multiple ( ⁇ 0) of lambda / 2 (25 ) is operated.
  • the sound transducer is still operated at the optimum cleaning frequency f (25) , but in addition the bathroom is also sonicated with a frequency f (n) that lies outside this main frequency f (25) and an integer multiple of lambda / 2 ( 25) as well as lambda / 2 (n) .
  • a sound transducer is operated with a resonator corresponding to the length 5/2 lambda (25) and a specific ultrasound frequency f (25)
  • an additional frequency f (n) for the given resonator geometry 4/2 lambda (n) , 6 could be used / 2 lambda, 3/2 lambda (n) or 7/2 lambda (n) .
  • the predetermined length of the resonator always corresponds to an integer multiple of lambda / 2, but with an increased or decreased frequency f (n) .
  • the maxima and minimae lie at other points, so that previous dead sound zones are now also sonicated.
  • the possibly lower sonication at the previous maxima at the frequency f (25) has little effect in practice, since there are maximum radiation results, as mentioned at the beginning.
  • the main frequency f (25) alternates with the additional frequency f ( n) at intervals or the additional frequency f ( n) is fed in at intervals to the main frequency f (25) .
  • the main frequency f (25) and the additional frequency (additional frequencies) f (n) can be continuously fed together to the resonator.
  • An ultrasound generator (1) is joined to a resonator (2).
  • the resonator has a length 1 corresponding to the ultrasound frequency of 3/2 lambda (25) .
  • the lambda vibration nodes 1/2 lambda (25) , 2/2 lambda (25) and 3/2 lambda (25) result from the the length of the resonator (2) are marked. 3, each with sinusoidal antinodes at 1/4 lambda (25) , 3/4 lambda (25) and 5/4 lambda (25) .
  • An increased frequency f (n) corresponding to 5/2 lambda (n) is shown in the curves of FIGS. 2 and 3 with a small line width.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Resistance Heating (AREA)
  • Percussion Or Vibration Massage (AREA)

Claims (1)

  1. Procédé pour engendrer et diffuser de l'énergie ultrasonique dans des liquides, notamment pour agir acoustiquement sur des bains de nettoyage à ultrasons au moyen d'un convertisseur d'ultrasons, c'est-à-dire d'un élément vibratoire auquel est assemblé un résonateur en forme de barreau ou de tube, qui plonge dans le liquide et présente, pour la fréquence ultrasonique choisie f₂₅, la longueur de lambda/2₂₅ ou d'un multiple entier de cette valeur,
    caractérisé par le fait
    que le convertisseur d'ultrasons (1, 2) est actionné de manière continue ou par intervalles uniquement, ou bien par intervalles simultanément à la fréquence principale f₂₅, avec au moins une autre fréquence fn correspondant à un multiple entier (≠ O) de lambda/2₂₅.
EP92118228A 1991-11-09 1992-10-24 Bain de nettoyage à ultrason Revoked EP0542016B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4136897 1991-11-09
DE4136897A DE4136897C1 (fr) 1991-11-09 1991-11-09

Publications (3)

Publication Number Publication Date
EP0542016A2 EP0542016A2 (fr) 1993-05-19
EP0542016A3 EP0542016A3 (en) 1993-12-22
EP0542016B1 true EP0542016B1 (fr) 1995-09-13

Family

ID=6444427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92118228A Revoked EP0542016B1 (fr) 1991-11-09 1992-10-24 Bain de nettoyage à ultrason

Country Status (5)

Country Link
EP (1) EP0542016B1 (fr)
AT (1) ATE127713T1 (fr)
DE (2) DE4136897C1 (fr)
DK (1) DK0542016T3 (fr)
ES (1) ES2077328T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4344455A1 (de) * 1993-12-23 1995-06-29 Branson Ultraschall Vorrichtung zum Abstrahlen von Ultraschallenergie in Flüssigkeiten
DE10030718A1 (de) * 2000-06-23 2002-01-10 Univ Ilmenau Tech Verfahren und Vorrichtung zum Reinigen von Gegenständen mit Schallwellen
FR3029816B1 (fr) 2014-12-15 2016-12-30 Cedrat Tech Transducteur tubulaire ultrasonore modulaire et immersible

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3027533C2 (de) * 1980-07-21 1986-05-15 Telsonic Aktiengesellschaft für elektronische Entwicklung und Fabrikation, Bronschhofen Verfahren zur Erzeugung und Abstrahlung von Ultraschallenergie in Flüssigkeiten sowie Ultraschallresonator zur Ausführung des Verfahrens
SE456971B (sv) * 1987-03-18 1988-11-21 Douglas H Mcqueen Ultraljudsinstrument
JP2794438B2 (ja) * 1989-02-16 1998-09-03 本多電子株式会社 キャビテーションを利用した洗浄方法
FR2671743B1 (fr) * 1991-01-17 1993-06-18 Duburque Dominique Dispositif de mise en vibration ultrasonique d'une structure non accordee.

Also Published As

Publication number Publication date
DE4136897C1 (fr) 1992-09-03
EP0542016A3 (en) 1993-12-22
ES2077328T3 (es) 1995-11-16
DK0542016T3 (da) 1995-12-27
EP0542016A2 (fr) 1993-05-19
ATE127713T1 (de) 1995-09-15
DE59203670D1 (de) 1995-10-19

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