EP0231436B1 - Dispositif de traitement de surfaces d'objets - Google Patents

Dispositif de traitement de surfaces d'objets Download PDF

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Publication number
EP0231436B1
EP0231436B1 EP86114410A EP86114410A EP0231436B1 EP 0231436 B1 EP0231436 B1 EP 0231436B1 EP 86114410 A EP86114410 A EP 86114410A EP 86114410 A EP86114410 A EP 86114410A EP 0231436 B1 EP0231436 B1 EP 0231436B1
Authority
EP
European Patent Office
Prior art keywords
outer tube
ionizing electrode
tube
spray
electrode
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
EP86114410A
Other languages
German (de)
English (en)
Other versions
EP0231436A1 (fr
Inventor
Artur Koch
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.)
Ahlbrandt System GmbH
Original Assignee
Ahlbrandt System 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 Ahlbrandt System GmbH filed Critical Ahlbrandt System GmbH
Priority to AT86114410T priority Critical patent/ATE56322T1/de
Publication of EP0231436A1 publication Critical patent/EP0231436A1/fr
Application granted granted Critical
Publication of EP0231436B1 publication Critical patent/EP0231436B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T19/00—Devices providing for corona discharge

Definitions

  • the invention relates to a device for the surface treatment of objects by electrical spray discharge, which has a housing and an electrically insulated spray electrode.
  • Devices of this type are generally known and customary, in particular for the treatment of films, for example such a device is described in DE-A 2 550 810.
  • Treatment by spray discharge is usually used to increase its wettability and adhesiveness by roughening a surface.
  • This type of surface treatment has found widespread use in the production of photo paper.
  • the spray electrode can be arranged firmly and the foil or paper can be guided over an earthed roller opposite the spray electrode.
  • Treatment with spray discharges becomes more difficult if the surfaces to be treated are three-dimensional.
  • the windows have been glued to body flanges for some time. Since the body must be painted before gluing the windows, the body flanges are also painted. This leads to adhesive problems. So far, one has been helped by spraying on an agent which improves adhesion, but this is cumbersome and leads to contamination of the area surrounding the body flange.
  • the object of the invention is to develop a device for surface treatment by spray discharge, the spray electrode of which can be easily guided along any, in particular three-dimensional, contours by hand or by means of a robot.
  • the housing is formed by an electrically conductive, grounded, freely routable outer tube surrounding the spray electrode, from which the spray electrode protrudes with a short, spraying area, and in that the distance of the outer tube from the spray electrode is so it is dimensioned that when the high voltage is switched on there is a spray discharge between the spray electrode and the outer tube, provided the spray electrode does not spray towards the object to be treated.
  • Such a spray electrode can be guided by hand like a stylus with the spraying end along the surface to be treated, for example along a body flange of a motor vehicle. This allows you to follow complicated, three-dimensional contours. Since the spray electrode is surrounded by a grounded, electrically conductive outer tube, this can be touched while the device is in use, since most of the electrical energy flows through the corona to the object to be treated and through the outer tube. Even if the spray electrode does not spray towards an object to be treated, you can touch it, because when the spray electrode is live, a shunt corona still burns between it and the earthed outer tube, so that most of the energy flows there.
  • the device according to the invention is also suitable for experimentally treating a film by spray discharge by hand in order to subsequently check the effect of this treatment.
  • a structurally particularly simple embodiment of the invention consists in that the spray electrode consists of a tube made of quartz or a comparable insulating material which is closed at the spraying end and in which aluminum granulate or a comparable material is filled to form the spraying area and into which the open end is inserted insulated high-frequency ignition cable, which protrudes into the aluminum granulate with one stripped end.
  • a very particularly advantageous embodiment of the invention consists in that the outer tube is kept at a distance from the tube forming the spray electrode by means of spacers and the air gap between the spray electrode and the outer tube is connected to an air suction on the side facing away from the spraying area.
  • This design prevents ozone from entering the room in which the spray treatment is taking place, so that there is no risk of damage to the health of the user or other people in the room.
  • the spray electrode and the outer tube are cooled by the air flow guided along the spray electrode, which enables a high operating voltage and prevents the outer tube from becoming so warm that it can no longer be touched.
  • Another embodiment of the invention consists in the fact that in the area of the granulate filling of the spray electrode there is an intermediate tube made of electrically conductive material on the inside against the outer tube, which is at a smaller distance from the spray electrode than the outer tube.
  • this intermediate tube Through this intermediate tube, the air gap between the active area of the spray electrode and the intermediate tube connected to ground via the outer tube in this area is so small that there is a spray discharge there, even if the spray electrode is not a short distance from an earthed one to be treated Object is located.
  • the generator supplying the device with electrical energy does not have to be switched off when the spray treatment of an object is interrupted, but rather can work continuously with a continuous load, which simplifies the construction of the generator.
  • This measure also ensures that the active part of the spray electrode can be touched by hand even when the device is switched on.
  • the electrical resistance of the human body is far higher than that of the air gap between the spray electrode and the intermediate tube, such a small amount of energy flows that there is no uncomfortable feeling or even damage can come. Since the air gap is relatively narrow only in the area of the intermediate tube, the air can relax after passing through this area, so that the overall flow losses are low.
  • the spraying end of the spray electrode protruding from the outer tube is closed off by a hemispherical closure.
  • this spray electrode termination can be designed differently for different applications.
  • FIG. 1 shows a spray electrode 1, which is a quartz tube which, at the left end in the drawing, is closed by a hemispherical closure 2 similar to a test tube.
  • An active region is formed on the closed side of the spray electrode 1 by filling with aluminum granules 3.
  • An electrically insulated high-frequency ignition cable 4 is inserted into the open end of the spray electrode 1 and projects with an uninsulated end 5 into the aluminum granulate 3.
  • an outer tube 6 Coaxial to the spray electrode 1 is an outer tube 6 made of electrically conductive material, which is held by spacers 7, 8, which are strips of insulating material, at a fixed distance from the spray electrode 1, so that between the spray electrode 1 and the Outer tube 6 creates an air gap 9.
  • the outer tube 6 has a ground connection 10 so that it can be connected to earth.
  • an intermediate tube 11 made of conductive material is used in the outer tube 6, which also forms an air gap 12 between itself and the spray electrode, the width of which is, however, smaller than the distance of the outer tube 6 from the spray electrode 1.
  • an air suction nozzle 13 which is connected to an air suction, not shown.
  • the rounded end 2 of the spray electrode 1 is opposite a surface to be treated when the voltage is switched on, the desired spray discharge occurs there. If the termination 2 is held at a greater distance from a grounded surface, then spray discharges only occur between the part of the spray electrode 1 active through the aluminum granulate 3 and the grounded intermediate tube 11, so that the generator can continue to work with a base load.
  • FIG. 2 shows the left end of the spray electrode 1 seen in FIG. 1, the air gap 12, the outer tube 6 and the air suction nozzle -13. Furthermore, it can be seen that the spacers 7 are strip-shaped components between which the air can flow to the air suction nozzle 13.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)

Claims (5)

1. Dispositif de traitement de surfaces d'objets par des effluves en couronne électriques qui comporte une enveloppe et une électrode d'émission électriquement isolée (1), caractérisé en ce que l'enveloppe est formée par un tube extérieur (6) guidable librement, connecté à la masse, conducteur de l'électricité, entourant l'électrode d'émission (1), tube hors duquel fait saillie l'électrode d'émission (1) avec une zone brève d'émission et la distance du tube extérieur (6) à l'électrode d'émission (1) est telle qu'il en résulte, lorsque la haute tension est enclenchée, une effluve en couronne entre l'électrode d'émission (1) et le tube extérieur (6) dans la mesure où l'électrode d'émission (1) n'émet pas vers l'objet à traiter.
2. Dispositif selon la revendication 1, caractérisé en ce que l'électrode d'émission (1) est constituée d'un tube en quartz ou en un matériau isolant comparable, fermé à l'extrémité d'émission, qui est rempli de granulat d'aluminium (3) ou d'un matériau comparable pour la formation de la zone d'émission et dans lequel est amené à partir de l'extrémité ouverte un câble d'allumage haute fréquence isolé (4) lequel fait saillie avec une extrémité non isolée (5) dans le granulat d'aluminium (3).
3. Dispositif selon les revendications 1 ou 2, caractérisé en ce que le tube extérieur (6) est maintenu sur toute sa longueur à une distance du tube formant l'électrode d'émission (1) et l'intervalle à air (9) entre l'électrode d'émission (1) et le tube extérieur (6) est relié du côté non en regard de la zone d'émission à un dispositif d'aspiration d'air.
4. Dispositif selon une ou plusieurs des revendications 2 ou 3, caractérisé en ce que dans la zone de remplissage de granulat d'aluminium (3) de l'électrode d'émission (1) un tube intermédiaire (11) en un matériau conducteur de l'électricité est en contact à l'intérieur avec le tube extérieur (6), tube intermédiaire qui présente par rapport à l'électrode d'émission (1) une distance plus faible que celle du tube extérieur (6).
5. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'extrémité d'émission de l'électrode d'émission (1), qui fait saillie hors du tube extérieur (6) est fermée par une fermeture hémisphérique (2).
EP86114410A 1986-02-05 1986-10-17 Dispositif de traitement de surfaces d'objets Expired - Lifetime EP0231436B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86114410T ATE56322T1 (de) 1986-02-05 1986-10-17 Vorrichtung zur oberflaechenbehandlung von gegenstaenden.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3603406 1986-02-05
DE19863603406 DE3603406A1 (de) 1986-02-05 1986-02-05 Vorrichtung zur oberflaechenbehandlung von gegenstaenden

Publications (2)

Publication Number Publication Date
EP0231436A1 EP0231436A1 (fr) 1987-08-12
EP0231436B1 true EP0231436B1 (fr) 1990-09-05

Family

ID=6293350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114410A Expired - Lifetime EP0231436B1 (fr) 1986-02-05 1986-10-17 Dispositif de traitement de surfaces d'objets

Country Status (5)

Country Link
US (1) US4719533A (fr)
EP (1) EP0231436B1 (fr)
AT (1) ATE56322T1 (fr)
DE (2) DE3603406A1 (fr)
ES (1) ES2017916B3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3204801B2 (ja) * 1993-06-18 2001-09-04 富士写真フイルム株式会社 真空グロー放電処理装置及び処理方法
DE19739553A1 (de) * 1997-09-09 1999-03-11 Siemens Ag Vorladeschaltung für einen am Ausgang eines netzgeführten Stromrichters angeschlossenen Kondensator
US6136412A (en) * 1997-10-10 2000-10-24 3M Innovative Properties Company Microtextured catalyst transfer substrate
DE10255036B3 (de) * 2002-11-19 2004-04-08 Haug Gmbh & Co. Kg. Luftionisationsgerät
DE10316378B3 (de) * 2003-04-10 2004-07-29 Stefan Zimmermann Entladungsröhre
DE102021127875A1 (de) * 2021-10-26 2023-04-27 Krömker Holding GmbH Vorrichtung zur Ionisierung von Umgebungsluft

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2550810A1 (de) * 1975-11-12 1977-05-18 Ahlbrandt Andreas Vorrichtung zum behandeln der oberflaechen von folien, platten und formteilen durch elektrische spruehentladung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201574A (en) * 1922-07-29 1924-10-30 Luke Francis Warren Improvements in or relating to condensing, coalescing and precipitating atmospheric moisture
DE1238653B (de) * 1960-11-05 1967-04-13 American Can Co Vorrichtung und Verfahren zur Erzielung einer verbesserten Haftfaehigkeit von Hohlkoerpern aus thermoplastischem Werkstoff
US3179849A (en) * 1964-07-15 1965-04-20 Simco Co Inc Shockless ionizing air nozzle
US3711743A (en) * 1971-04-14 1973-01-16 Research Corp Method and apparatus for generating ions and controlling electrostatic potentials
US3997817A (en) * 1975-05-21 1976-12-14 Philip Edward Secker Device for neutralizing the charge on statically-charged surfaces
US4015658A (en) * 1975-11-12 1977-04-05 The United States Of America As Represented By The Secretary Of The Air Force Apparatus for electric enhancement of heat transfer
CH649518A5 (de) * 1979-08-02 1985-05-31 Bbc Brown Boveri & Cie Verfahren und schaltungsanordnung zur durchfuehrung von gasentladungsreaktionen.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2550810A1 (de) * 1975-11-12 1977-05-18 Ahlbrandt Andreas Vorrichtung zum behandeln der oberflaechen von folien, platten und formteilen durch elektrische spruehentladung

Also Published As

Publication number Publication date
ES2017916B3 (es) 1991-03-16
ATE56322T1 (de) 1990-09-15
DE3673981D1 (de) 1990-10-11
EP0231436A1 (fr) 1987-08-12
US4719533A (en) 1988-01-12
DE3603406A1 (de) 1987-08-06

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