EP1236380B1 - Buse a plasma - Google Patents

Buse a plasma Download PDF

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Publication number
EP1236380B1
EP1236380B1 EP00990703A EP00990703A EP1236380B1 EP 1236380 B1 EP1236380 B1 EP 1236380B1 EP 00990703 A EP00990703 A EP 00990703A EP 00990703 A EP00990703 A EP 00990703A EP 1236380 B1 EP1236380 B1 EP 1236380B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
channel
plasma
housing
slot
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.)
Expired - Lifetime
Application number
EP00990703A
Other languages
German (de)
English (en)
Other versions
EP1236380A1 (fr
Inventor
Peter FÖRNSEL
Christian Buske
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.)
Plasmatreat GmbH
Original Assignee
Plasmatreat 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
Application filed by Plasmatreat GmbH filed Critical Plasmatreat GmbH
Publication of EP1236380A1 publication Critical patent/EP1236380A1/fr
Application granted granted Critical
Publication of EP1236380B1 publication Critical patent/EP1236380B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3468—Vortex generators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3478—Geometrical details

Definitions

  • the invention relates to a plasma nozzle for the treatment of Surfaces, in particular for the pretreatment of Plastic surfaces, with a tubular, electric conductive housing, one of a working gas flowed through nozzle channel forms, and a High frequency generator for applying a voltage between the electrode and the housing.
  • a plasma nozzle of this type is described in DE 195 32 412 A1 described and serves, for example, Pre-treat plastic surfaces so that applying of adhesives, inks and the like on the Plastic surface allows or easier.
  • a such pretreatment is required because Plastic surfaces in the normal state not with Liquids are wettable and therefore the printing ink or do not accept the adhesive.
  • the surface structure of the plastic is changed so that the surface for liquids with relatively large Surface tension is wetted. The surface tension the fluids with which the surface just barely is a measure of the quality of the Pretreatment.
  • the plasma nozzle is a relatively cool, but highly reactive plasma jet reached, the about the shape and dimensions of a candle flame has and thus also the pretreatment of profile parts with relatively deep relief allowed. Because of the high Reactivity of the plasma jet is sufficient for a very short time Pre-treatment, so that the workpiece with correspondingly high Speed past the plasma jet are passed can. Due to the comparatively low temperature of the Plasma jet is therefore also the pretreatment of heat-sensitive plastics possible. There no Counter electrode on the back of the workpiece is required, the surfaces of any thick, block-like workpieces, hollow bodies and be easily pretreated. For one uniform treatment of larger surfaces is in the mentioned publication a battery of several offset plasma nozzles have been proposed. In However, this case is a relatively high apparatus Effort required.
  • the object of the invention is therefore to a plasma nozzle which defies a very compact construction Larger surface treatment of workpiece surfaces allows.
  • This task is characterized by a plasma nozzle of the type mentioned solved that the outlet of the nozzle channel as transverse to the longitudinal axis of the nozzle channel extending narrow slot is formed.
  • the working gas in the nozzle channel be twisted.
  • the twisted plasma jet can be with the help of the outlet slot fan-shaped. At most, the twisting leads to a minor S-shaped distortion of the fan when facing the mouth frontal the plasma nozzle looks.
  • the intensity distribution of the plasma along the length of the slot can be, for example thereby controlling that the width of the slot varies over the length becomes.
  • This arrangement is particularly simply connect when the mouth of the nozzle channel including the Slot and the cross channel through a separate mouthpiece of insulating Material (ceramic) or preferably made of metal is formed in the mouth of the housing is pressed or screwed.
  • the transverse channel is open at both ends, and these open ends are surrounded only with a certain distance from the walls of the housing, so that a part of the plasma can escape at the ends of the transverse channel and then deflected by the housing walls obliquely in the direction of the workpiece becomes.
  • the plasma compartment will then be particularly intense at both edges Boundary rays limited, which pull apart the fan formally. hereby can be the shape of the fan and the intensity distribution of the plasma jet within the fan, for example, adjust so that the downstream Edge of the plasma fan assumes a concave shape, so that the fan a Dovetail resembles.
  • the outer jacket of the housing of the plasma nozzle on both sides the plane of the fan auxiliary air to be supplied.
  • the outer surface of the housing of the plasma nozzle in the mouth region not conical, but is prism-shaped, so that two flat surfaces are formed, which converge to the plane of the fan.
  • the plasma nozzle shown in the drawing has a tubular housing 10, the one elongated, conically tapered at the bottom nozzle channel 12 forms.
  • the nozzle channel 12 is an electrically insulating ceramic tube 14 used.
  • a working gas, such as air, is from the drawing fed into the upper end of the nozzle channel 12 and with the aid of an in the ceramic tube 14 used twisting device 16 so twisted that it is vortex-shaped flows through the nozzle channel 12, as in the drawing by a helical arrow is symbolized.
  • a vortex core extending along the axis of the housing.
  • a pin-shaped electrode 18 is mounted, which is coaxial projects into the nozzle channel 12 and to the by means of a high voltage generator 20 a high-frequency AC voltage is applied.
  • High frequency generator 20 generated voltage is of the order of a few kilovolts and has, for example, a frequency of the order of 20 kHz.
  • the metal housing 10 is grounded and serves as a counter electrode, such that an electrical discharge between the electrode 18 and the housing 10 can be caused.
  • a corona discharge at the swirl device 16 and the electrode 18.
  • This corona discharge is a Arc discharge from the electrode 18 to the housing 10 ignited.
  • the arc 22 of this discharge is taken by the twisted inflowing working gas and channeled at the core of the vortex-shaped gas flow, so that the Arc then almost straight from the top of the electrode 18 along the Housing axis extends and only in the region of the mouth of the housing 10th branched radially on the housing wall.
  • a cylindrical mouthpiece 24 made of copper used In the mouth of the housing 10 is a cylindrical mouthpiece 24 made of copper used, the axially inner end rests against a shoulder 26 of the housing.
  • the conically tapered end of the nozzle channel 12 settles in the mouthpiece 24 continuous, with the same or slightly changed cone angle.
  • the arc 22 branches within the mouthpiece 24 on the conical walls of the mouthpiece.
  • the mouthpiece 24 has at the free, in Figure 1 lower end of a section 28th with a reduced diameter, with the peripheral wall of the housing 10th forms an open in the mouth direction annular channel 30.
  • the conically tapered Tip of the nozzle channel 12 opens into a transverse channel 32 through a Cross hole is formed in the section 28 and at both ends to the Ring channel 30 is open towards.
  • This transverse channel 32 according to Figure 2 a has circular cross-section, closes axially a narrower, diametrically through the mouthpiece extending slot 34 which, to the end face of the mouthpiece is open.
  • the swirling through the nozzle channel 12 flowing working gas comes in the vortex core in intimate contact with the arc 22, so that a highly reactive Plasma is produced at a relatively low temperature.
  • This plasma is distributed in the transverse channel 32 and then enters partly through the slot 34 and partly also through the open ends of the transverse channel 32 and the annular channel 30 from the plasma nozzle.
  • a plasma jet 36 in the form of a flat fan generated in the edge regions 38 a greater density and a greater flow velocity than near the nozzle axis having.
  • the range of the plasma jet 36 at the edges is greater as in the middle, so that the downstream edge 40 of the plasma jet a has concave curvature and thus the subjects overall the shape of a Swallowtail accepts.
  • This shape of the plasma jet ensures that the plasma jet fits snugly against the workpiece, not shown.
  • Figure 3 shows a modified embodiment in which the annular channel and the transverse channel are absent and at the mouthpiece at the free end is bounded on both sides of the slot 34 by inclined surfaces with corresponding inclined surfaces of the housing 10 are flush.
  • the housing 10 is here surrounded by an air distributor 42, by the auxiliary air 44 parallel to the inclined surfaces of the housing and the mouthpiece 24 from both sides blown out of the slot 34 plasma jet 36 is blown to the fan-shaped plasma jet to bundle and premature expansion of this To prevent plasma jet in the direction perpendicular to the plane of the fan direction.
  • the auxiliary air also makes intimate contact with the plasma jet supported with the surface of the workpiece.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Geometry (AREA)
  • Plasma Technology (AREA)
  • Arc Welding In General (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Discharge Heating (AREA)

Claims (10)

  1. Buse à plasma pour le traitement de surfaces, comportant un boítier électriquement conducteur de forme tubulaire (10), qui forme un canal de buse (12) traversé par un gaz de travail, une électrode (18) disposée coaxialement dans le canal de buse et un générateur de haute fréquence (20) pour appliquer une tension entre l'électrode (18) et le boítier, caractérisée en ce que la sortie du canal de buse (12) est agencée sous la forme d'une fente (34) qui s'étend transversalement par rapport à l'axe longitudinal du canal de buse.
  2. Buse à plasma selon la revendication 1, caractérisée en ce que le boítier (10) contient un dispositif à tourbillon (16), qui fait tourbillonner le gaz de travail dans le canal de buse (12).
  3. Buse à plasma selon la revendication 1 ou 2, caractérisée en ce que le canal de buse (12) débouche dans un canal transversal (32) qui s'étend parallèlement à la fente (34) et est relié pour sa part à la fente (34).
  4. Buse à plasma selon la revendication 3, caractérisée en ce que le canal de buse (12) est rétréci avec une forme conique au niveau de l'extrémité côté sortie et est relié au canal transversal (32) uniquement dans la partie médiane de ce dernier.
  5. Buse à plasma selon la revendication 3 ou 4, caractérisée en ce que le canal transversal (32) est ouvert à ses deux extrémités.
  6. Buse à plasma selon la revendication 5, caractérisée en ce que les parois intérieures du boítier (10) sont situées, sur l'extrémité côté sortie de la buse à plasma, à distance des extrémités ouvertes du canal transversal (32) et que le plasma sortant de ces extrémités est dévié vers le côté de la fente (34).
  7. Buse à plasma selon la revendication 6, caractérisé en ce que les extrémités du canal transversal (32) débouchent dans un canal annulaire (30) délimité par le boítier (10) et qui est ouvert du même côté que la fente (34).
  8. Buse à plasma selon l'une des revendications précédentes, caractérisée en ce que la fente (34) et l'extrémité du canal de buse (12) côté sortie sont formées dans un élément d'embouchure (34), qui est installé dans l'extrémité du boítier (10).
  9. Buse à plasma selon la revendication 8, caractérisée en ce que l'élément d'embouchure (24) est réalisé en un métal.
  10. Buse à plasma selon l'une des revendications précédentes, caractérisée par un distributeur d'air (42), monté extérieurement sur le boítier (10) et qui dévie de l'air auxiliaire (44) dans la direction perpendiculaire au plan de la fente (34) en le faisant converger sur le jet de plasma (36) qui sort de la fente (34).
EP00990703A 1999-12-09 2000-12-11 Buse a plasma Expired - Lifetime EP1236380B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29921694U DE29921694U1 (de) 1999-12-09 1999-12-09 Plasmadüse
DE29921694U 1999-12-09
PCT/EP2000/012501 WO2001043512A1 (fr) 1999-12-09 2000-12-11 Buse a plasma

Publications (2)

Publication Number Publication Date
EP1236380A1 EP1236380A1 (fr) 2002-09-04
EP1236380B1 true EP1236380B1 (fr) 2005-03-02

Family

ID=8082755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00990703A Expired - Lifetime EP1236380B1 (fr) 1999-12-09 2000-12-11 Buse a plasma

Country Status (8)

Country Link
US (1) US6677550B2 (fr)
EP (1) EP1236380B1 (fr)
JP (1) JP3838914B2 (fr)
AT (1) ATE290303T1 (fr)
DE (2) DE29921694U1 (fr)
DK (1) DK1236380T3 (fr)
ES (1) ES2237491T3 (fr)
WO (1) WO2001043512A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US7875356B2 (en) 2005-04-29 2011-01-25 Basf Se Composite element, especially a window pane
WO2011107510A1 (fr) 2010-03-02 2011-09-09 Plasmatreat Gmbh Procédé pour la fabrication d'un emballage

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EP1170066A1 (fr) 2000-07-05 2002-01-09 Förnsel, Peter Procédé et dispositif pour le nettoyage de rouleaux et de bandes
US20040011378A1 (en) * 2001-08-23 2004-01-22 Jackson David P Surface cleaning and modification processes, methods and apparatus using physicochemically modified dense fluid sprays
EP1335641B1 (fr) * 2002-02-09 2004-08-25 Plasma Treat GmbH Buse à plasma
ATE309692T1 (de) * 2002-03-28 2005-11-15 Plasma Treat Gmbh Verfahren und vorrichtung zum schliessen von glasampullen
DE10231037C1 (de) * 2002-07-09 2003-10-16 Heraeus Tenevo Ag Verfahren und Vorrichtung zur Herstellung einer Vorform aus synthetischem Quarzglas mittels plasmaunterstütztem Abscheideverfahren
EP1410852B1 (fr) * 2002-10-18 2006-04-19 Plasma Treat GmbH Méthode et appareil pour l'enlèvement d'une couche de peinture à base de polymères
DE102004024061A1 (de) * 2004-05-13 2005-12-08 Ticona Gmbh Verfahren zur Herstellung von Polyacetal-Kunststoffverbunden und dafür geeignete Vorrichtung
US7164095B2 (en) 2004-07-07 2007-01-16 Noritsu Koki Co., Ltd. Microwave plasma nozzle with enhanced plume stability and heating efficiency
US20060021980A1 (en) * 2004-07-30 2006-02-02 Lee Sang H System and method for controlling a power distribution within a microwave cavity
US7806077B2 (en) 2004-07-30 2010-10-05 Amarante Technologies, Inc. Plasma nozzle array for providing uniform scalable microwave plasma generation
US7271363B2 (en) * 2004-09-01 2007-09-18 Noritsu Koki Co., Ltd. Portable microwave plasma systems including a supply line for gas and microwaves
US7189939B2 (en) 2004-09-01 2007-03-13 Noritsu Koki Co., Ltd. Portable microwave plasma discharge unit
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EP1877351B1 (fr) * 2004-11-19 2008-10-29 Vetrotech Saint-Gobain (International) AG Procede et dispositif pour usiner des surfaces de plaques de verre, de maniere a supprimer des bandes de matiere et des zones de forme differente
DE102005004280A1 (de) 2005-01-28 2006-08-03 Degussa Ag Verfahren zur Herstellung eines Verbundes
US20060172081A1 (en) * 2005-02-02 2006-08-03 Patrick Flinn Apparatus and method for plasma treating and dispensing an adhesive/sealant onto a part
DE102005018926B4 (de) 2005-04-22 2007-08-16 Plasma Treat Gmbh Verfahren und Plasmadüse zum Erzeugen eines mittels hochfrequenter Hochspannung erzeugten atmosphärischen Plasmastrahls umfassend eine Vorrichtung jeweils zur Charakterisierung einer Oberfläche eines Werkstückes
EP1965833B1 (fr) * 2005-12-20 2013-08-28 PlasmaTreat GmbH Procede pour desinfecter des objets
DE102005061247A1 (de) * 2005-12-20 2007-06-21 Peter J. Danwerth Verfahren und Vorrichtung zum Entkeimen von Lebensmitteln
US20070284342A1 (en) * 2006-06-09 2007-12-13 Morten Jorgensen Plasma treatment method and apparatus
US7547861B2 (en) * 2006-06-09 2009-06-16 Morten Jorgensen Vortex generator for plasma treatment
US8981253B2 (en) * 2006-09-13 2015-03-17 Hypertherm, Inc. Forward flow, high access consumables for a plasma arc cutting torch
US9560732B2 (en) 2006-09-13 2017-01-31 Hypertherm, Inc. High access consumables for a plasma arc cutting system
US9662747B2 (en) 2006-09-13 2017-05-30 Hypertherm, Inc. Composite consumables for a plasma arc torch
US10194516B2 (en) 2006-09-13 2019-01-29 Hypertherm, Inc. High access consumables for a plasma arc cutting system
US10098217B2 (en) 2012-07-19 2018-10-09 Hypertherm, Inc. Composite consumables for a plasma arc torch
DE102007011235A1 (de) 2007-03-06 2008-09-11 Plasma Treat Gmbh Verfahren und Vorrichtung zur Behandlung einer Oberfläche eines Werkstückes
TWI387400B (zh) * 2008-10-20 2013-02-21 Ind Tech Res Inst 電漿系統
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DE102009000259A1 (de) 2009-01-15 2010-07-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Modifizierung der Oberfläche von Partikeln und hierzu geeignete Vorrichtung
PL2279801T3 (pl) 2009-07-27 2015-06-30 Fraunhofer Ges Forschung Sposoby powlekania wykorzystujące strumień plazmy i powlekarka plazmowa
DE102009048397A1 (de) 2009-10-06 2011-04-07 Plasmatreat Gmbh Atmosphärendruckplasmaverfahren zur Herstellung oberflächenmodifizierter Partikel und von Beschichtungen
DE102010011643B4 (de) 2010-03-16 2024-05-29 Christian Buske Vorrichtung und Verfahren zur Plasmabehandlung von lebendem Gewebe
DE102010044114A1 (de) 2010-11-18 2012-05-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Verbinden von Substraten und damit erhältliche Verbundstruktur
JPWO2012172630A1 (ja) * 2011-06-13 2015-02-23 トヨタ自動車株式会社 表面加工装置及び表面加工方法
DE102012206081A1 (de) 2012-04-13 2013-10-17 Krones Ag Beschichtung von Behältern mit Plasmadüsen
DE102014217821A1 (de) 2014-09-05 2016-03-10 Tesa Se Verfahren zur Erhöhung der Adhäsion zwischen der ersten Oberfläche eines ersten bahnförmigen Materials und einer ersten Oberfläche eines zweiten bahnförmigen Materials
WO2016049762A1 (fr) * 2014-09-30 2016-04-07 Plasco Energy Group Inc. Système de plasma hors équilibre et procédé de raffinage de gaz de synthèse
WO2016077345A1 (fr) * 2014-11-10 2016-05-19 Superior Industries International, Inc. Procédé de revêtement de roues d'alliage
TW201709775A (zh) * 2015-08-25 2017-03-01 馗鼎奈米科技股份有限公司 電弧式大氣電漿裝置
DE102015121252A1 (de) * 2015-12-07 2017-06-08 Plasmatreat Gmbh Vorrichtung zur Erzeugung eines atmosphärischen Plasmastrahls und Verfahren zur Behandlung der Oberfläche eines Werkstücks
DE102016209097A1 (de) 2016-03-16 2017-09-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Plasmadüse
DE102016204449A1 (de) * 2016-03-17 2017-09-21 Plasmatreat Gmbh Vorrichtung zur Umformung metallischer Bauteile sowie damit durchgeführtes Verfahren
US11357093B2 (en) * 2016-12-23 2022-06-07 Plasmatreat Gmbh Nozzle assembly, device for generating an atmospheric plasma jet, use thereof, method for plasma treatment of a material, in particular of a fabric or film, plasma treated nonwoven fabric and use thereof
US10300711B2 (en) 2017-05-04 2019-05-28 Xerox Corporation Device for providing multiple surface treatments to three-dimensional objects prior to printing and system using the device
DE102017120017A1 (de) 2017-08-31 2019-02-28 Plasmatreat Gmbh Düsenanordnung für eine Vorrichtung zur Erzeugung eines atmosphärischen Plasmastrahls, System und Verfahren zur Überwachung und/oder Steuerung des Systems
DE102018132960A1 (de) 2018-12-19 2020-06-25 Plasmatreat Gmbh Vorrichtung und Verfahren zur Behandlung einer Werkstückoberfläche mit einem atmosphärischen Plasmastrahl
WO2020153980A1 (fr) 2019-01-24 2020-07-30 Superior Industries International, Inc. Procédé de revêtement de roues en alliage à l'aide d'un plasma inter-couches
CN117265628A (zh) * 2023-09-18 2023-12-22 广州航海学院 一种基于等离子体放电的高电压射流电解加工装置及方法

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Publication number Priority date Publication date Assignee Title
US7875356B2 (en) 2005-04-29 2011-01-25 Basf Se Composite element, especially a window pane
WO2011107510A1 (fr) 2010-03-02 2011-09-09 Plasmatreat Gmbh Procédé pour la fabrication d'un emballage
DE102010055532A1 (de) 2010-03-02 2011-12-15 Plasma Treat Gmbh Verfahren zur Herstellung eines mehrschichtigen Verpackungsmaterials und Verfahren zum Auftragen eines Klebers sowie Vorrichtung dazu

Also Published As

Publication number Publication date
JP3838914B2 (ja) 2006-10-25
EP1236380A1 (fr) 2002-09-04
US6677550B2 (en) 2004-01-13
ATE290303T1 (de) 2005-03-15
DK1236380T3 (da) 2005-05-30
JP2003518317A (ja) 2003-06-03
US20020179575A1 (en) 2002-12-05
WO2001043512A1 (fr) 2001-06-14
ES2237491T3 (es) 2005-08-01
DE29921694U1 (de) 2001-04-19
DE50009671D1 (de) 2005-04-07

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