EP1067829A2 - Buse à plasma - Google Patents

Buse à plasma Download PDF

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Publication number
EP1067829A2
EP1067829A2 EP00113748A EP00113748A EP1067829A2 EP 1067829 A2 EP1067829 A2 EP 1067829A2 EP 00113748 A EP00113748 A EP 00113748A EP 00113748 A EP00113748 A EP 00113748A EP 1067829 A2 EP1067829 A2 EP 1067829A2
Authority
EP
European Patent Office
Prior art keywords
housing
plasma nozzle
nozzle according
mouthpiece
plasma
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.)
Granted
Application number
EP00113748A
Other languages
German (de)
English (en)
Other versions
EP1067829A3 (fr
EP1067829B1 (fr
Inventor
Peter FÖRNSEL
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.)
Plasma Treat GmbH
Original Assignee
PLASMA TREAT GmbH
Agrodyn Hochspannungstechnik 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 PLASMA TREAT GmbH, Agrodyn Hochspannungstechnik GmbH filed Critical PLASMA TREAT GmbH
Publication of EP1067829A2 publication Critical patent/EP1067829A2/fr
Publication of EP1067829A3 publication Critical patent/EP1067829A3/fr
Application granted granted Critical
Publication of EP1067829B1 publication Critical patent/EP1067829B1/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
    • H05H1/3478—Geometrical details
    • 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
    • H05H1/3463—Oblique nozzles

Definitions

  • the invention relates to a plasma nozzle, in particular for the pretreatment of Surfaces, with a tubular housing that is one of a working gas flows through the nozzle channel, one arranged coaxially in the nozzle channel Electrode and a counter electrode surrounding the nozzle channel.
  • a plasma nozzle of this type is described in DE 195 32 412 A and is used, for example to pretreat plastic surfaces so that application of adhesives, printing inks and the like on the plastic surface or is relieved.
  • Such pretreatment is necessary because Plastic surfaces cannot normally be wetted with liquids and therefore do not accept the ink or glue.
  • the surface structure of the plastic is changed so that the Surface can be wetted for liquids with a relatively high surface tension becomes.
  • the surface tension of the liquids with which the surface is straight is still wettable, is a measure of the quality of the pretreatment.
  • the known plasma nozzle makes it relatively cool, but highly reactive Plasma beam reaches about the shape and dimensions of a Has a candle flame and thus the pretreatment of profile parts with proportion deep relief allowed. Because of the high reactivity of the plasma jet A very short pretreatment is sufficient so that the workpiece passed the plasma jet at a correspondingly high speed can be. Because of the comparatively low temperature of the plasma jet is therefore also the pretreatment of heat-sensitive plastics possible. Since no counter electrode is required on the back of the workpiece the surfaces of any thick, block-like workpieces, Hollow bodies and the like can be pretreated without problems. For one Uniform treatment of larger surfaces is in the publication mentioned proposed a battery consisting of several staggered plasma nozzles been. In this case, however, is a relatively high expenditure on equipment required.
  • the object of the invention is therefore to provide a plasma nozzle with which the Desired surface areas of the workpiece can be better achieved.
  • a plasma jet is thus generated with this nozzle, which is inclined to the axis of the Nozzle channel is directed so that, for example, undercuts on a workpiece can be better achieved.
  • the housing or at least the part forming the nozzle channel is preferred of the housing rotatable about its axis.
  • the housing rotatable about its axis.
  • the Width is much larger than the diameter of the plasma jet. Since only with a single nozzle is used, the outlay on equipment is significantly less than with the rotating head described above.
  • there are clear lower inertia forces because the housing rotates around its longitudinal axis. It will thus created a plasma nozzle which has a compact structure and nevertheless enables rational plasma treatment of larger surfaces.
  • the deflection angle of the plasma beam relative to the axis of rotation can be as required can be selected and can also be 90 °, for example.
  • the plasma nozzle is particularly suitable for pretreating the inner surfaces of pipes or hoses.
  • the housing is preferably relative to the electrodes arranged in the nozzle channel and rotatable to the supply means for the working gas so that it Electrode and the gas supply device can be held in rotation and only the surrounding housing rotates.
  • Electrode and the gas supply device can be held in rotation and only the surrounding housing rotates.
  • Rotary unions or the like are required.
  • the counter electrode can immediately are formed by the rotating housing and is preferred grounded so that no contact protection measures for the housing and the associated rotary drive required are.
  • the working gas preferably twisted so that it is vortex-shaped through the nozzle channel flows and therefore that formed between the electrode and the counter electrode Arc into the mouth area of the nozzle channel in the vortex core channeled.
  • the plasma beam is stabilized and in the vortex core there is an intimate contact between the working gas and the arc, so that the reactivity of the plasma is increased.
  • the plasma nozzle shown in FIG. 1 has a tubular housing 10 which in its upper area in the drawing enlarged in diameter and with A bearing 12 is rotatably mounted on a fixed support tube 14. Internally of the housing 10, a nozzle channel 16 is formed, which is from the open end of the support tube 14 to a mouth 18 in the drawing lower end of the housing leads.
  • An electrically insulating ceramic tube 20 is inserted into the support tube 14.
  • Working gas for example air
  • the ceramic tube 20th swirl device 22 With the help of a in the ceramic tube 20th swirl device 22 used, the working gas is swirled so that it is vortex-shaped flows through the nozzle channel 16 to the mouth 18, as in the drawing is symbolized by a helical arrow. In the nozzle channel 16 this creates a vortex core that runs along the axis A of the housing.
  • the metal one existing housing 10 is grounded via the bearing 12 and the support tube 14 and serves as a counter electrode, so that an electrical discharge between the electrode 24 and the housing 10 can be caused.
  • switching of the high voltage generator 26 it occurs due to the high frequency of the AC voltage and initially due to the dielectric of the ceramic tube 20 to a corona discharge on the swirl device 22 and the electrode 24. This corona discharge causes an arc discharge from the electrode 24 ignited to the housing 10.
  • the arc of this discharge is caused by the swirling inflowing working gas entrained and in the core of the vortex-shaped Gas flow channeled so that the arc is almost straight from the tip of the electrode 24 runs along the axis A and only in the area the mouth of the housing 10 branches radially onto the housing wall. To this In this way, a plasma jet 28 is generated which exits through the mouth 18.
  • the mouth 18 of the nozzle channel is formed by a metal mouthpiece 30, that is screwed into a threaded bore 32 of the housing 10 and in which a tapering towards the mouth 18 and obliquely with respect to the axis A extending channel 34 is formed. In this way it forms from the Mouth 18 emerging plasma jet 28 with the axis A of the housing Angle, which is about 45 ° in the example shown. By changing the Mouthpiece 30, this angle can be varied as required.
  • a gear 36 is arranged on the enlarged upper part of the housing 10, for example with a toothed belt or a pinion with one shown motor is in drive connection.
  • the plasma jet 28 describes a cone jacket that the to be machined Painted surface of a workpiece, not shown. If then the plasma nozzle is moved along the surface of the workpiece or conversely, the workpiece is moved along the plasma nozzle, so a relatively uniform pretreatment of the surface of the workpiece on a Streak reached, the width of the diameter of that described by the plasma jet 28 Cone on the workpiece surface.
  • the Distance between the mouthpiece 30 and the workpiece can be the width of the pretreated area.
  • the direction of swirl of the plasma jet can be in the same direction or in opposite directions to the direction of rotation of the housing 10.
  • FIG. 2 shows an embodiment in which only the mouthpiece 30 relative to the stationary housing 10 is rotatable.
  • the housing 10 is here on his outlet-side tapered and forms an axial / radial bearing for one flared upstream part of the mouthpiece 30.
  • the bearing is designed as a magnetic bearing 38 in the example shown.
  • the mouthpiece 30 is against the conical by the dynamic pressure of the outflowing air Bearing surface of the housing 10 is pressed, however, by the magnetic bearing 38 Non-contact held in the housing so that it is on its entire circumference a narrow gap with a width of only about 0.1 to 0.2 mm with forms the housing.
  • the mouthpiece 30 is grounded by arcing across this gap.
  • the rotary drive for the mouthpiece 30 is an aerodynamic one Drive provided, for example in the form of an air nozzle 40 through the blades 42 arranged on the outer circumference of the mouthpiece tangentially be blown with air.
  • the aerodynamic drive can also by blades or ribs arranged in the interior of the mouthpiece, which are acted upon by the swirling air flowing through the channel 34.
  • the rotational movement of the mouthpiece 30 can also be done thereby produce that the mouth 18 is turned slightly in the circumferential direction, so that the mouthpiece is rotating by the recoil of the outflowing air is transferred.
  • This embodiment has the advantage that the rotary drive is structurally simplified and the moment of inertia of the rotating masses to a minimum is limited.

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)
EP00113748A 1999-07-09 2000-06-29 Buse à plasma Expired - Lifetime EP1067829B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29911974U 1999-07-09
DE29911974U DE29911974U1 (de) 1999-07-09 1999-07-09 Plasmadüse

Publications (3)

Publication Number Publication Date
EP1067829A2 true EP1067829A2 (fr) 2001-01-10
EP1067829A3 EP1067829A3 (fr) 2003-06-25
EP1067829B1 EP1067829B1 (fr) 2006-05-17

Family

ID=8075901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00113748A Expired - Lifetime EP1067829B1 (fr) 1999-07-09 2000-06-29 Buse à plasma

Country Status (8)

Country Link
US (1) US6262386B1 (fr)
EP (1) EP1067829B1 (fr)
JP (1) JP4111659B2 (fr)
AT (1) ATE326827T1 (fr)
DE (2) DE29911974U1 (fr)
DK (1) DK1067829T3 (fr)
ES (1) ES2265312T3 (fr)
PT (1) PT1067829E (fr)

Cited By (7)

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Publication number Priority date Publication date Assignee Title
WO2006117324A1 (fr) * 2005-04-29 2006-11-09 Basf Aktiengesellschaft Element composite, notamment vitre de fenetre
DE202007018327U1 (de) 2006-11-23 2008-08-07 Plasmatreat Gmbh Vorrichtung zum Erzeugen eines Plasmas
DE102010011643A1 (de) 2010-03-16 2011-09-22 Christian Buske Vorrichtung und Verfahren zur Plasmabehandlung von lebendem Gewebe
US8361565B2 (en) 2009-02-13 2013-01-29 Airbus Operations Gmbh Method for plasma treatment and painting of a surface
DE102013103259A1 (de) 2013-04-02 2014-10-02 Plasmatreat Gmbh Desinfektionsmodul für eine Serienprozessanlage
EP3082384B1 (fr) 2013-12-11 2019-05-01 Applied Plasma Inc Co., Ltd. Dispositif générateur de plasma
WO2020126543A1 (fr) 2018-12-19 2020-06-25 Plasmatreat Gmbh Dispositif et procédé de traitement de la surface d'une pièce ouvrée avec un jet de plasma atmosphérique

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DE29919142U1 (de) 1999-10-30 2001-03-08 Agrodyn Hochspannungstechnik G Plasmadüse
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US6774336B2 (en) 2001-02-27 2004-08-10 Thermal Dynamics Corporation Tip gas distributor
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AT412719B (de) * 2003-06-16 2005-06-27 Eckelt Glas Gmbh Verfahren und vorrichtung zum bereichsweisen entschichten von glasscheiben
US7164095B2 (en) 2004-07-07 2007-01-16 Noritsu Koki Co., Ltd. Microwave plasma nozzle with enhanced plume stability and heating efficiency
US8134097B2 (en) * 2004-08-23 2012-03-13 Illinois Tool Works Inc. Multi-position head plasma torch
US20060052883A1 (en) * 2004-09-08 2006-03-09 Lee Sang H System and method for optimizing data acquisition of plasma using a feedback control module
US20100021340A1 (en) * 2005-12-20 2010-01-28 Plasmatreat Gmbh Method and device for the disinfection of objects
CN101361409B (zh) * 2006-01-30 2011-09-14 赛安株式会社 工件处理系统和等离子体产生装置
JP4647566B2 (ja) * 2006-08-30 2011-03-09 株式会社サイアン プラズマ発生装置およびそれを用いるワーク処理装置
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JP4619966B2 (ja) * 2006-02-27 2011-01-26 株式会社サイアン ワーク処理装置
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US7547861B2 (en) * 2006-06-09 2009-06-16 Morten Jorgensen Vortex generator for plasma treatment
US20070284342A1 (en) * 2006-06-09 2007-12-13 Morten Jorgensen Plasma treatment method and apparatus
JP5055893B2 (ja) * 2006-08-17 2012-10-24 パナソニック株式会社 大気圧プラズマ発生装置
JP4724625B2 (ja) * 2006-08-30 2011-07-13 株式会社サイアン プラズマ発生装置およびそれを用いるワーク処理装置
JP4620015B2 (ja) * 2006-08-30 2011-01-26 株式会社サイアン プラズマ発生装置およびそれを用いるワーク処理装置
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TWI674041B (zh) * 2017-12-21 2019-10-01 雷立強光電科技股份有限公司 一種大氣電漿產生裝置
TWI691237B (zh) * 2018-02-13 2020-04-11 國立交通大學 常壓電漿束產生裝置
KR102032294B1 (ko) * 2018-04-13 2019-10-15 주식회사 에이피피 대기압 플라즈마 발생장치
EP4050973A4 (fr) 2019-10-22 2022-11-09 Fuji Corporation Dispositif de génération de plasma et procédé de traitement par plasma
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JP2022538202A (ja) * 2020-05-22 2022-09-01 フン リ，チャン 大気圧プラズマ発生装置を用いた円筒状及び環状の被処理物の表面処理システム及び方法
JP7420003B2 (ja) * 2020-07-31 2024-01-23 株式会社デンソー プラズマ処理装置用のプラズマ放出ノズル及びプラズマ処理装置
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DE3612722A1 (de) * 1986-04-16 1987-10-29 Lothar Wittig Vorrichtung zum plasmaschmelzschneiden
FR2672459A1 (fr) * 1991-02-01 1992-08-07 Girard Frederic Dispositif de rechargement par plasma a orifice oblique.
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EP0766502A1 (fr) * 1995-09-28 1997-04-02 Sulzer Metco (Irvine) Inc. Canon à plasma à cathode unique avec alimentation des poudres suivant l'axe central de la buse de sortie

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006117324A1 (fr) * 2005-04-29 2006-11-09 Basf Aktiengesellschaft Element composite, notamment vitre de fenetre
US7875356B2 (en) 2005-04-29 2011-01-25 Basf Se Composite element, especially a window pane
DE202007018327U1 (de) 2006-11-23 2008-08-07 Plasmatreat Gmbh Vorrichtung zum Erzeugen eines Plasmas
US8361565B2 (en) 2009-02-13 2013-01-29 Airbus Operations Gmbh Method for plasma treatment and painting of a surface
DE102010011643A1 (de) 2010-03-16 2011-09-22 Christian Buske Vorrichtung und Verfahren zur Plasmabehandlung von lebendem Gewebe
WO2011113848A1 (fr) 2010-03-16 2011-09-22 Christian Buske Dispositif pour le traitement au plasma de tissu vivant
DE102010011643B4 (de) 2010-03-16 2024-05-29 Christian Buske Vorrichtung und Verfahren zur Plasmabehandlung von lebendem Gewebe
DE102013103259A1 (de) 2013-04-02 2014-10-02 Plasmatreat Gmbh Desinfektionsmodul für eine Serienprozessanlage
WO2014161843A1 (fr) 2013-04-02 2014-10-09 Plasmatreat Gmbh Module de désinfection pour une installation de processus en série
EP3082384B1 (fr) 2013-12-11 2019-05-01 Applied Plasma Inc Co., Ltd. Dispositif générateur de plasma
WO2020126543A1 (fr) 2018-12-19 2020-06-25 Plasmatreat Gmbh Dispositif et procédé de traitement de la surface d'une pièce ouvrée avec un jet de plasma atmosphérique
DE102018132960A1 (de) 2018-12-19 2020-06-25 Plasmatreat Gmbh Vorrichtung und Verfahren zur Behandlung einer Werkstückoberfläche mit einem atmosphärischen Plasmastrahl

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ATE326827T1 (de) 2006-06-15
JP2001068298A (ja) 2001-03-16
DE50012751D1 (de) 2006-06-22
JP4111659B2 (ja) 2008-07-02
DE29911974U1 (de) 2000-11-23
DK1067829T3 (da) 2006-09-18
EP1067829A3 (fr) 2003-06-25
ES2265312T3 (es) 2007-02-16
US6262386B1 (en) 2001-07-17
PT1067829E (pt) 2006-10-31
EP1067829B1 (fr) 2006-05-17

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