EP0618847B1 - Procede et dispositif pour le traitement aux ultrasons et pour la transmission de vibrations a un liquide soumis aux ultrasons renfermant des particules - Google Patents

Procede et dispositif pour le traitement aux ultrasons et pour la transmission de vibrations a un liquide soumis aux ultrasons renfermant des particules Download PDF

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Publication number
EP0618847B1
EP0618847B1 EP93921774A EP93921774A EP0618847B1 EP 0618847 B1 EP0618847 B1 EP 0618847B1 EP 93921774 A EP93921774 A EP 93921774A EP 93921774 A EP93921774 A EP 93921774A EP 0618847 B1 EP0618847 B1 EP 0618847B1
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EP
European Patent Office
Prior art keywords
fluid
resonator
compartment wall
acoustic
particles
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Expired - Lifetime
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EP93921774A
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German (de)
English (en)
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EP0618847A1 (fr
Inventor
Franz Gähler
Urs Keller
Roland Meier
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Sofima AG
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Sofima AG
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    • 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
    • B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • 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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound

Definitions

  • the invention relates to a method and a device for sonication and for transmitting vibrations to a sonication liquid containing particles according to one of Claims 1, 7 and 21.
  • ultrasonic cleaning systems have been used for cleaning the surfaces of jewelry, but also machine parts, which consist of a container containing a cleaning liquid, an ultrasonic generator and one or more sound transducers, which are attached to the outside of the container walls and vibrate move and transfer the vibrations to the liquid.
  • the sound transducers are poorly adaptable to the load, which is composed of the container, the cleaning liquid or the coupling medium and the objects immersed therein for cleaning.
  • the physical conditions such as the working frequency, the transmission behavior of the container, the damping of the coupling fluid and the material to be cleaned, also set limits to the dimensions of the cleaning systems.
  • a measuring instrument for measuring the characteristics of liquids (US-A-3,680,841) is also known from the European search report.
  • a sonication device immersed in a container filled with liquid is intended to prevent precipitation from forming on the areas of measuring electrodes immersed in the liquid.
  • a liquid is filled in the latter. This protective jacket acts as a resonator and transmits the ultrasound waves directly to the liquid to be measured.
  • the vibrator According to the US specification, it should be possible with the vibrator to prevent deposits on the two electrodes with low energy, so that, for example, the quality of a pH measurement can always be constant, even if the liquid is partially crystallized. Since the sound transducer is surrounded by a jacket, it can be used directly in hot and corrosive liquids and cooled by the liquid. The liquid, for example, to be measured for its pH value, contains no suspended particles to be cleaned, which have a dampening effect on the propagation of the sound waves. Problems with starting the vibrator in this application or maintaining its operation do not occur in this application. It is not possible to use the probe known from US-A-3,680,841 for the sonication of attenuation-rich sonication media.
  • EP-A-0 528 070 discloses a process for the treatment of bulk goods, in which the contamination of the foundry sand is to be removed with ultrasound. Tests have shown, however, that even an economically uninteresting small one Concentration of bulk material in the sonication liquid the sound probe can no longer be started.
  • the object of the present invention is to provide a method and a device for generating sound waves and for removing particles present in a sound reinforcement from their adhering deposits or impurities.
  • the sound probe or the resonator despite energy loss due to the additional transmission media, which prevent the contact of the resonator with the sonication liquid and the particles to be cleaned therein, is essentially independent of the damping properties of the particles and of the particle-containing sonication and coupling fluid.
  • the compartment wall used to separate the transmission medium is set in motion by the sound waves emitted by the resonator and transmits them to the particles to be sonicated.
  • the vibrations When using a resonator with a surface structure, the vibrations will decrease sent from the resonator crossing each other in all directions. In the case of a resonator with elevations in the form of rods, humps, etc., the vibrations are also emitted to the sound reinforcement in all directions, so that the sound waves can cross in the sound reinforcement medium and thus also hit the particles to be sounded from all sides.
  • the public address device 1 has a hollow or solid resonator 3 with a diameter d of, for example, 48.5 mm, which is connected to a sound transducer 6, which is shown only schematically in FIG.
  • the sound transducer 6 is arranged outside the resonator 3, which is of tubular design here, and connected to the latter at the end face.
  • a magnetostrictive or a piezoelectric sound transducer 6 can be attached.
  • the sound probe, designated as a whole by 2 is connected at its one end, which contains the sound transducer 6, to the wall 8 of a sound container 10 via flange 13.
  • the resonator 3 can also have a shape other than a tubular geometric shape.
  • the sound transducer 6 is supplied with energy by a sound generator 16, which is likewise arranged outside the resonator 3 and the sound container 10, via the line 12.
  • a jacket-shaped compartment wall 9 surrounds the resonator 3 to form a space 7.
  • the compartment wall 9, with the resonator 3 arranged therein, is immersed in a sonication liquid 11 to be sonicated.
  • the compartment wall 9, the diameter D of which is, for example, 85 mm, is at least partially vibration-connected to the resonator 3 via a transmission medium or a transmission liquid 15 located in the space between the surface of the resonator 3 and the inner surface of the compartment wall 9.
  • the space 7 between the resonator 3 and the compartment wall 9 can thus be completely or partially filled with the transmission liquid 15, which transmits the vibrations initially transmitted from the resonator 3 to the transmission liquid 15 to the sonication liquid 11 and the particles 32 introduced therein and the deposits sitting thereon 34 transmits (only a few shown in Figures 1 and 2).
  • the compartment wall 9 can be used for indirect transmission be a closed vibratory body or a perforated body for direct transmission; it can also be designed in the form of a net or lattice or as a textile fabric and allow the passage of transmission liquid 15 or sonication liquid 11 into the intermediate space 7 or in the opposite direction without being loaded with particles to be sonicated and damped.
  • the compartment wall 9 consequently serves to create a low-damping zone between the resonator 3 and the sonication liquid 11 with the parts 32 contained therein.
  • a liquid-tight compartment wall 9 water can be used as the low-damping transmission liquid 15 for the transmission of the vibrations generated at the resonator 3 to the compartment wall 9.
  • the jacket-shaped compartment wall 9 can be made, for example, of metal, glass or plastic, the natural resonance behavior of which is preferably adapted to the desired sonication frequencies. In the case of a liquid-permeable compartment wall 9, this acts as a sieve and the liquid present between the resonator 3 and the compartment wall 9 is in this case identical to the sonication liquid 11.
  • the transmission of the vibrations from the resonator 3 to the particles to be sonicated now takes place in this embodiment of the invention directly through the particle-free sonication liquid 11 in contact with the resonator 3 and to a lesser extent also through the compartment wall 9.
  • the vibratory compartment wall 9, which acts as a sound or vibration transmitter can have a structured surface (FIG. 3). This enables the sound waves to be emitted in mutually intersecting directions.
  • elevations or thorn-shaped or rod-shaped attachments 21 can be attached to the surface of the compartment wall, which also allow a confused radiation of the sound waves.
  • the compartment wall 9 can alternatively have the shape of a bag consisting of a film or mesh in order to separate the transmission liquid 15 from the sonication liquid 11.
  • the bag 17 can also be attached to the end of a compartment wall 9 which extends only over a partial length of the resonator 3.
  • the resonator 103 can be designed as a hollow body, in which the compartment wall 109 is inserted, forming an intermediate space 107 for the transmission liquid 115.
  • both the resonator 103 and the compartment wall 109 used in it are tubular.
  • the sonication liquid 111 with the particles 132 to be sonicated is then located within the compartment wall 109, which can be set in motion by the transmission liquid 115. Direct contact between the surface of resonator 103 and the Sonication fluid 111 in the space 107 and the particles 132 therein does not take place. With this embodiment, a greater sound wave density is achieved in the sonication liquid 111.
  • a liquid-tight or a liquid-permeable compartment wall 109 can also be used here.
  • a liquid jacket which largely prevents direct contact of the particles 232 in the sonication liquid 211 with the resonator 203 can be generated by a correspondingly guided introduction of transmission liquid 215 (shown as a helix) or particle-free sonication liquid.
  • transmission liquid 215 shown as a helix
  • particle-free sonication liquid instead of the helical course of the flow of the transmission liquid 215 shown schematically in FIG. 6, a flow of the transmission medium 215 running parallel to the longitudinal axis of the resonator 203 could also be generated (cf. also the embodiment according to FIG. 9).
  • the resonator 303 is arranged in a compartment wall 309 which is spherical in the lower region 324 and which is in contact with the resonator 303 through the transmission liquid 315.
  • a guide wall 328 is arranged parallel to the latter, the lower end 330 of which ends at a distance from the spherical section 324 with the formation of a gap X.
  • the container 310 in which the resonator 303 of the acoustic probe 302 is immersed, has a cylindrical configuration in the upper section.
  • the contour of the container runs in the region of the spherical section 324 of the compartment wall 309 310 in sections approximately parallel to the spherical section 324.
  • the spherical section 324 can be arranged independently of the compartment wall 309 below this (no illustration).
  • the container 310 ends in a line 312 below.
  • the combination of the described features forms an upflow classifier in which particles 332 of different sizes and / or formed, which are suspended in the sonication liquid 311 and have been released by the sound probe 302, can be separated and removed separately. The separation is carried out as described below. In the separating space 318 between the compartment wall 309 and the guide wall 328, particles 332 loaded with deposits are introduced into the sonication liquid 311 and sink downward under their own weight.
  • the deposits 334 are detached from the particles 332, ie liberated. They remain in this released state, since the spherical section 324 is also caused to vibrate by the sound probe 302 and therefore also transmits these vibrations in the region under the guide wall 328 to the sound reinforcement liquid 311.
  • the detached deposits 334 the size of which is generally smaller than the size of the particles 332, get into a flow (arrow P), which is generated by a liquid that is admitted through line 312.
  • the detached and released deposits 311 are moved upward in the annular channel between the guide wall 328 and the wall of the container 310 by the flow P. transported and can be removed there (arrow Q).
  • the compartment wall 409 encloses the resonator 403 as in the example according to FIG. 1.
  • the container 410 there is a treatment room 418 which is delimited by two liquid-permeable wall surfaces 428,446.
  • the lower end of the inner wall 428 of the treatment room 418 is connected to a floor 438; the outer wall 446 is connected to the bottom of the container 410.
  • the container 410 is connected to a line 412 at the bottom via a valve 440.
  • the outer wall 446 is further connected at the bottom to a feed line 442 and at the top a drain line 444 for rinsing liquid. Liberating and separating contaminated particles 432 and deposits 434 is described below.
  • Contaminated particles 432 are introduced into the annular space of the treatment space 418 and sink downward in the sonication liquid 411 and are sonicated at the same time.
  • the detached liberated deposits 434 are rinsed out by a liquid flow (arrows R) which is introduced between the compartment wall 409 and the inner wall 428 of the treatment room 418 and through the treatment room 436 and can be rinsed there by a further liquid flow (arrows S) above or below, if the flushing takes place in the opposite direction, can be removed from the container 410.
  • the cleaned particles 432 leave the container 410 through line 412.
  • Contaminated particles with a very low density for example shredded, contaminated styrofoam or the like, are introduced from below and removed from the container 410 from above.
  • the dwell time of the particles 432 to be cleaned can be controlled with the flow velocity in the line 412. Batch operation can take place by closing the treatment room 436 - below and / or above.
  • the compartment wall 509 is formed by the inner wall of the treatment room 518. Otherwise, the design of the device (resonator 503, container 510) and the functioning of the cleaning of the particles 532 are identical to those in the fourth exemplary embodiment.
  • the compartment wall 609 is designed as a tube and wraps around the resonator 603 in a helical manner. Both the helical compartment wall 609 and the resonator 603 are immersed in the transmission liquid 615, which is filled in a container 610.
  • the sonication liquid 611 with the parts 632 loaded with deposits 634 is passed into a separation device, in the present example into a centrifuge 650. Deposits 634 and sonication liquid 611 are separated from the particles 632 in the centrifuge 650.
  • the particles 632 can be, for example, kieselguhr particles from beer filtration from which deposits 634 of yeast, protein and the like have been removed in the device.
  • the particles 632 are separated from the detached contaminants 634 in an upflow classification process.
  • a rinsing liquid is introduced from below, which transports the detached particles 634 upwards, where they can also leave the container 610.
  • transmission fluid used in the description is understood to mean a fluid which essentially contains no or only a small number of low-mass particles and consequently counteracts the propagation of the sound waves with little damping.
  • the sonication liquid can be used to support the cleaning effect and the removal of the deposits, e.g. Lye.
  • the transmission liquid can be identical or different from the sonication liquid.
  • the sound probe can e.g. an ultrasonic probe RS-20 available from Telsonic AG CH-9552 Bronschhofen or a similar product.
  • Both the rigid and the bag-shaped compartment wall can only extend over part or the entire height of the sound container.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention a pour objet un procédé pour la production de vibrations et leur transmission à un liquide soumis aux ultrasons (11), selon lequel les ondes d'ultrasons sont produites par une sonde acoustique (2) munie d'un transformateur acoustique (6) et d'un résonateur (3) fixé à ce transformateur. Le résonateur (3) est entouré, conformément à l'invention, par la paroi d'un compartiment (9), l'espace intermédiaire (7) compris entre le résonateur (3) et la paroi (9) étant rempli d'un liquide de transfert (15). Ce dernier transmet les vibrations de la surface du résonateur (3) au liquide (11) entourant la paroi (9). Le résonateur (3) peut être mis en fonctionnement indépendamment des propriétés d'amortissement du liquide soumis aux ultrasons (11) et des particules qu'il contient à soumettre aux ultrasons.

Claims (21)

  1. Procédé d'exposition aux ultrasons et de transmission de vibrations à un liquide soumis aux ultrasons, contenant des particules, pour ségréguer des impuretés constituées de particules introduites dans le liquide soumis aux ultrasons, au moyen d'un dispositif d'exposition aux ultrasons, avec un générateur d'ultrasons, un convertisseur d'ultrasons (6) et un résonateur, y étant raccordé et excité par le convertisseur d'ultrasons, caractérisé en ce que les ondes sonores produites par le résonateur (3, 103, 203, 303, 403, 503, 603) sont, au préalable, directement transmises à un liquide de transmission (15, 115, 215, 215, 315, 415, 515, 615) à faible amortissement mis en contact directement avec le résonateur (3, 103, 203, 303, 403, 503, 603) et sont retransmises au moyen de ce liquide et transmises, directement ou indirectement, au liquide d'exposition aux ultrasons (11, 111, 211, 311, 411, 511, 611) et aux particules (32, 132, 232, 332, 432, 532, 632), à exposer aux ultrasons et introduites dans le liquide d'exposition aux ultrasons (11, 111, 211, 311, 411, 511, 611), de manière que des dépôts (34, 134, 234, 334, 434, 534, 634) se trouvant sur les particules (32, 132, 232, 332, 432, 532, 632) soient dissociés et maintenus sous une forme libérée.
  2. Procédé selon la revendication 1, caractérisé en ce que les vibrations produites par le convertisseur sonore (6) et transmises par le résonateur (3, 103, 203, 303, 403, 503, 603) sont transmises au liquide de transmission (15, 115, 215, 315, 415, 515, 615), et en ce que les vibrations sont transmises par le liquide de transmission (15, 115, 215, 315, 415, 515, 615), par l'intermédiaire d'une paroi de cloisonnement (9, 109, 309, 409, 509, 609) ou bien, à travers celle-ci, au liquide d'exposition aux ultrasons (11, 111, 211, 311, 411, 511, 611) et sont transmises aux particules (32, 132, 232, 332, 432, 532, 632) à exposer aux ultrasons et introduites dans celui-ci.
  3. Procédé selon la revendication 2, caractérisé en ce qu'une paroi de cloisonnement (9, 109, 509, 609) perméable au liquide est mise en place et un liquide à exposer aux ultrasons (11, 111, 511, 611) exempt de particules ou pauvre en particules est utilisé comme liquide de transmission (15, 115, 515, 615).
  4. Procédé selon la revendication 2, caractérisé en ce que l'exposition aux ultrasons s'effectue à travers une paroi de cloisonnement (9, 109, 309, 409, 509, 609) étanche aux liquides, en totalité ou pour une partie d'elle-même.
  5. Procédé selon la revendication 1, caractérisé en ce que le liquide de transmission (215) ou le liquide d'exposition aux ultrasons exempt de particules constitue un écoulement protecteur (R) et empêche tout contact direct entre les particules à exposer aux ultrasons (232, 432, 532) et/ou le liquide d'exposition aux ultrasons et le résonateur (203, 403, 503).
  6. Procédé selon l'une des revendications 2, 4 et 5, caractérisé en ce que la paroi de cloisonnement (609) enclôt le liquide d'exposition aux ultrasons (111, 611) au moins dans la zone de liquide de transmission (115, 615).
  7. Dispositif de production et de transmission de vibrations sur un liquide d'exposition aux ultrasons dans un récipient d'exposition aux ultrasons (310), avec une sonde d'ultrasons (2), avec au moins un convertisseur d'ultrasons (6) et un résonateur relié au convertisseur d'ultrasons et pouvant être mis en vibration par celui-ci, caractérisé en ce qu'au moins une partie de la surface du résonateur (3, 103, 303, 403, 503, 603), qui est conçu pour transmettre des vibrations aux particules (32, 132, 232, 332, 432, 532, 632) à exposer aux ultrasons et introduites dans le liquide d'exposition aux ultrasons (11, 111, 211, 311, 411, 511, 611), est séparé au moyen d'une paroi de cloisonnement (9, 109, 309, 409, 509, 609) vis-à-vis des particules à exposer aux ultrasons, un liquide de transmission (15, 115, 215, 315, 415, 515, 615) à faible amortissement étant prévu entre la surface du résonateur (3, 103, 303, 403, 503, 603) et la paroi de cloisonnement (9, 109, 309, 409, 509, 609)
  8. Dispositif selon la revendication 7, caractérisé en ce que la surface de la paroi de cloisonnement (9) est structurée ou en ce que des bossages ou des éléments vibrants (21) en forme de barre sont fixés sur la paroi de cloisonnement (9).
  9. Dispositif selon l'une des revendications 7 ou 8, caractérisé en ce qu'au moins une partie de la paroi de cloisonnement (9, 109, 309, 409, 509, 609) est réalisée en forme de tube ou en ce que la paroi de cloisonnement (9, 109, 309, 409, 509, 609) présente des perforations, et en ce qu'elle est réalisée sous forme de sac ou de grille, de réseau, ou de structure de surface textile.
  10. Dispositif selon l'une des revendications 7 à 9, caractérisé en ce que la paroi de cloisonnement (9, 109, 309, 409, 509, 609) s'étend sur une partie ou sur toute la hauteur du récipient d'exposition aux ultrasons (10, 110, 210, 310, 410, 510, 610).
  11. Dispositif selon l'une des revendications 7 à 10, caractérisé en ce qu'un écoulement protecteur (R) est prévu entre la surface du résonateur (3, 103, 203, 403, 503) et le liquide d'exposition aux ultrasons (15, 115, 215, 415), dans lequel sont introduites les particules (32, 232, 432, 532).
  12. Dispositif selon l'une des revendications 7 à 11, caractérisé en ce que la paroi de cloisonnement (9, 409, 509) entoure le résonateur (3, 303, 403, 503) ou bien en ce que la paroi de cloisonnement (109) est insérée à l'intérieur du résonateur (103) réalisé en forme de tube.
  13. Dispositif selon l'une des revendications 7 à 10, caractérisé en ce que, entre la paroi de cloisonnement (309) et la paroi du récipient (310), est insérée, en constituant deux espaces annulaires, une paroi de guidage (328) qui s'achève à une certaine distance au-dessus de l'extrémité inférieure de la paroi de cloisonnement (309), et en ce que des moyens (312) destinés à introduire un liquide sont disposés sur le récipient (310).
  14. Dispositif selon la revendication 13, caractérisé en ce que l'extrémité inférieure (324) de la paroi de cloisonnement (309) présente un épaississement ou bien est réalisée en forme de sphère et en ce qu'entre elle et l'extrémité inférieure (330) de la paroi de guidage (328) existe un interstice (Z).
  15. Dispositif selon l'une des revendications 7 à 12, caractérisé en ce qu'entre la paroi de cloisonnement (409) et la paroi du récipient (410) est insérée une enceinte de traitement (418) perméable au liquide et pouvant être traversé par un écoulement de balayage par un liquide (415).
  16. Dispositif selon la revendication 15, caractérisé en ce que l'enceinte de traitement (418) est ouverte en partie haute et basse pour permettre un fonctionnement en ligne ou bien est susceptible d'être obturée en partie basse et/ou en partie haute pour permettre un fonctionnement par lots et est conçue à cette fin pour recevoir des particules (432) à nettoyer, introduites par le haut ou par le bas.
  17. Dispositif selon la revendication 16, caractérisé en ce que la zone située entre la paroi extérieure de l'enceinte de traitement (418) et la paroi du récipient (410) est réalisée de façon à pouvoir être traversée par un écoulement de balayage.
  18. Dispositif selon l'une des revendications 15 à 17, caractérisé en ce que la paroi de cloisonnement constitue simultanément la paroi intérieure de l'enceinte de traitement (436).
  19. Dispositif selon la revendication 7, caractérisé en ce que la paroi de cloisonnement (609) est réalisée sous forme de corps creux, plongeant dans le liquide de transmission (615), s'étendant selon une hélicoïde, enlaçant le résonateur (603) au moins partiellement, ou bien situé à l'intérieur d'un résonateur (603).
  20. Dispositif selon la revendication 19, caractérisé en ce que l'extrémité inférieure de la paroi de cloisonnement (609) réalisée sous forme de corps creux débouche dans un dispositif de séparation (650).
  21. Dispositif de production et de transmission de vibrations à un liquide d'exposition aux ultrasons, chargé en particules, avec une sonde d'ultrasons (2), au moins un convertisseur d'ultrasons (6) et un résonateur (203), relié au convertisseur à ultrasons et pouvant être mis en vibration par celui-ci, caractérisé en ce que sont prévus des moyens pour introduire un liquide de transmission à faible amortissement en vue de constituer une enveloppe de liquide (216) autour du résonateur (203).
EP93921774A 1992-10-08 1993-10-08 Procede et dispositif pour le traitement aux ultrasons et pour la transmission de vibrations a un liquide soumis aux ultrasons renfermant des particules Expired - Lifetime EP0618847B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH3150/92 1992-10-08
CH315092 1992-10-08
PCT/CH1993/000241 WO1994008732A1 (fr) 1992-10-08 1993-10-08 Procede et dispositif pour le traitement aux ultrasons et pour la transmission de vibrations a un liquide soumis aux ultrasons renfermant des particules

Publications (2)

Publication Number Publication Date
EP0618847A1 EP0618847A1 (fr) 1994-10-12
EP0618847B1 true EP0618847B1 (fr) 1996-03-27

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EP93921774A Expired - Lifetime EP0618847B1 (fr) 1992-10-08 1993-10-08 Procede et dispositif pour le traitement aux ultrasons et pour la transmission de vibrations a un liquide soumis aux ultrasons renfermant des particules

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EP (1) EP0618847B1 (fr)
JP (1) JPH07501981A (fr)
AU (1) AU5105993A (fr)
DE (1) DE59302055D1 (fr)
WO (1) WO1994008732A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1188682A (zh) * 1997-01-24 1998-07-29 北京创格科技集团 悬浮液的超声分离和清洗装置
DE10132069A1 (de) * 2001-07-05 2003-01-16 Buehler Ag Verfahren zum Beeinflussen der rheologischen Eigenschaften eines Fluids
CN104858122B (zh) * 2015-04-15 2017-04-05 清华大学 弹性波模式分离方法及弹性波模式分离系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR745611A (fr) * 1933-05-13
FR1359616A (fr) * 1960-07-05 1964-04-30 Csf Nouveau projecteur d'ondes acoustiques
US3310129A (en) * 1964-09-08 1967-03-21 Beehler Vernon D Sonar wand
JPS5415118Y1 (fr) * 1969-10-23 1979-06-19
FR2338745A1 (fr) * 1976-01-22 1977-08-19 Nemours Cie Fse Silices Sables Procede et dispositif de purification de mineraux et notamment de sable par action de faisceaux d'ondes ultra-sonores
JPH01156787U (fr) * 1988-04-22 1989-10-27

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WO1994008732A1 (fr) 1994-04-28
DE59302055D1 (de) 1996-05-02
AU5105993A (en) 1994-05-09
EP0618847A1 (fr) 1994-10-12
JPH07501981A (ja) 1995-03-02

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