EP1604551A1 - Device for heating by induction of metal strip - Google Patents

Device for heating by induction of metal strip

Info

Publication number
EP1604551A1
EP1604551A1 EP04717127A EP04717127A EP1604551A1 EP 1604551 A1 EP1604551 A1 EP 1604551A1 EP 04717127 A EP04717127 A EP 04717127A EP 04717127 A EP04717127 A EP 04717127A EP 1604551 A1 EP1604551 A1 EP 1604551A1
Authority
EP
European Patent Office
Prior art keywords
strip
monospire
long sides
longitudinal direction
coil
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
EP04717127A
Other languages
German (de)
French (fr)
Other versions
EP1604551B8 (en
EP1604551B1 (en
Inventor
Philippe Roehr
Rémy KLEIN
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.)
FIVE CELES
Original Assignee
Celes SA
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=32865356&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1604551(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Celes SA filed Critical Celes SA
Publication of EP1604551A1 publication Critical patent/EP1604551A1/en
Application granted granted Critical
Publication of EP1604551B1 publication Critical patent/EP1604551B1/en
Publication of EP1604551B8 publication Critical patent/EP1604551B8/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
    • H05B6/103—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces multiple metal pieces successively being moved close to the inductor
    • H05B6/104—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces multiple metal pieces successively being moved close to the inductor metal pieces being elongated like wires or bands
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/365—Coil arrangements using supplementary conductive or ferromagnetic pieces

Definitions

  • the invention relates to a device for heating by electromagnetic induction of one or more metal strips, which device comprises at least one induction coil which surrounds an area of the strip (s) transversely to the longitudinal direction of the ( tapes).
  • Such a heating device is used, for example, in processing lines for metal strips, in particular for drying a coating such as a layer of paint, or heating before galvanizing or heating before annealing applied to this strip. which passes through the inductor or coils, in its longitudinal direction.
  • the object of the invention is, above all, to provide a heating device which makes it possible to reduce or eliminate the defects in the coating of the strip which may appear with the heating devices known to date.
  • the device for heating by electromagnetic induction of a metal strip comprising at least one inductor coil which surrounds an area of the strip transverse to the longitudinal direction of the strip, is characterized in that the coil comprises at least a monospire whose mean plane is orthogonal to the longitudinal direction of the strip.
  • the electromagnetic field produced has no transverse component in the strip, contrary to the state of the art according to which the turns of the coil are inclined on the longitudinal direction of the strip.
  • the elimination of this transverse component makes it possible to avoid the circulation of parasitic induced currents in the strip which are the source of potential differences between the strip and the rollers situated upstream and downstream of the inductor. These differences in potentials cause sparks, which affects the coating and the surface condition of the strip.
  • the transverse temperature uniformity is improved compared to a zig zag inductor.
  • the coil can comprise several monospires whose mean planes are orthogonal to the longitudinal direction of the strip.
  • the monospires can be linked together in series, or in parallel, or in series-parallel.
  • Each monospire can have two long sides in relation to the width of the strip and two short sides in relation to the thickness of the strip.
  • the current supply can be carried out on a long side or on a small side.
  • the length of the long sides of the monospire is greater than the width of the strip by a value such that an accentuated heating effect at the edge of the strip is avoided.
  • the heating device comprises, at each longitudinal end of the inductor coil with monospires, a short-circuit monospire closed on itself and whose mean plane is orthogonal to the longitudinal direction of the strip.
  • the device may include an electromagnetic shield in order to contain the magnetic field essentially in a direction orthogonal to the plane of the strip.
  • the device may include a field deflector to correct the temperature at the edge relative to the central zone of the strip.
  • Fig.l is a schematic perspective view of a heating device with monospire according to the invention, crossed by a metal strip.
  • Fig. is a schematic vertical section of a monospire with the metal strip inside.
  • Fig.3 shows a variant of monospire, without representation of the band.
  • Fig.4 shows another variant of monospire, similar to Fig.3.
  • Fig. 5 and 6 show, in vertical section, two variant embodiments of a monospire surrounding a strip which moves horizontally.
  • Fig.7 is a perspective diagram of a coil comprising three monospires connected in parallel with at each longitudinal end a short-circuit turn.
  • Fig.8 is the electrical diagram of the parallel connection of the monospires of Fig.7.
  • Fig. 9 is a perspective diagram of a coil composed of three monospires connected in series.
  • Fig.10 is the wiring diagram of Fig.9.
  • Fig. 11 is a perspective diagram of four monospires connected two by two in series-parallel.
  • Fig.12 is the wiring diagram of Fig.11.
  • a device for electromagnetic induction heating of a steel strip A or more generally of a metal strip.
  • the strip A runs vertically along its vertical longitudinal direction D represented by an arrow.
  • the heating device comprises at least one field coil B which surrounds an area of the strip A transversely to the longitudinal direction D.
  • the coil B according to the invention, comprises at least one monospire 1, the mean plane P of which is orthogonal to the longitudinal direction D of the strip A.
  • the monospire 1 is constituted by a flat conductor forming a rectangular outline whose long sides la, lb, are parallel to the large faces of the strip, and the short sides le, ld, parallel to the edge of the strip .
  • the current supply is carried out on a large side lb according to Fig.l.
  • This large side lb is open substantially at mid-length and has two lamellae L1, L2, folded at right angles outward relative to the plane of the side lb to allow connection to the power supply.
  • Fig.2 shows an arrangement similar to Fig.l with a strip A which moves horizontally instead of the vertical displacement of Fig.l.
  • Fig.3 illustrates an alternative embodiment according to which the current supply and the lamellae L1, L2, are provided in the median zone on a small side, for example the.
  • the metal strip A is not shown in Fig. 3.
  • Fig.4 shows a variant of the monospire according to which the current supply is ensured by lamellae L1, L2 provided at one of the ends of a small side, for example the.
  • the length H (Fig. 2) of the long sides of the monospire 1 is greater than the width h of the strip by a value such as an accentuated heating effect at the edge of the band, that is to say along the banks Ac, Ad is avoided.
  • H can be approximately 25% greater than h, with equal distribution of the difference in dimensions on either side of the longitudinal axis of the strip A.
  • FIG. 5 illustrates an alternative embodiment according to which the distance E between the long sides of the monospire increases towards the ends of these long sides so that the accentuated heating effect at the edge Ac, Ad of the strip is even better avoided. According to Fig.
  • the monospire 1 presents towards the ends of its long sides a trapezoidal contour Td, Te, the large base of which constitutes the small outer side le, ld, while the small base of the trapezium corresponds to the distance between the large sides of the monospire in the central region.
  • the ends of the long sides of the monospire have a substantially circular contour Cd, this convex towards the outside, also favorable for limiting or eliminating the heating effect accentuated at the edge Ac
  • Ad Fig.7 shows schematically in perspective a coil Bl comprising three identical monospires 1, 21 and 31 coaxial connected in parallel according to the electrical diagram of Fig.8.
  • Each monospire 1, 21, 31 has its mean plane orthogonal to the longitudinal direction of the metal strip (not shown in Fig.7) which passes inside the turns.
  • the supply of alternating electrical current, generally high frequency, is provided by conductors connected in parallel to the supply strips L1, L2 of each monospire.
  • each longitudinal end of the coil Bl a short circuit monospire 4, 5 closed on itself, the mean plane of which is orthogonal to the longitudinal direction of the strip.
  • These short circuit monospires 4, 5 allow the electromagnetic field lines to be closed, two of which are schematically represented in Me and Md, shortly after their exit from turns 4 and 5. This prevents the electromagnetic field from propagating further along the longitudinal direction of the strip, so that the possible disturbances created by this field on devices located downstream or upstream of the coil Bl are avoided.
  • Fig.9 illustrates a coil B2 comprising three coaxial monospires 1, 21, 31 connected in series as illustrated by the electrical diagram in Fig.10.
  • the mean plane of each monospire is orthogonal to the longitudinal direction D of the metal strip which is not shown in Fig. 9.
  • the number of monospires connected in parallel or in series can be different from three, for example equal to two or more than three.
  • Fig.11 shows schematically in perspective a series-parallel assembly of four monospires 1, 21, 31, 41 coaxial whose mean plane is orthogonal to the longitudinal direction D of the steel strip not shown.
  • the monospires 1, 21 are connected in series as well as the monospires 31, 41. These two series groupings are connected in parallel as illustrated diagrammatically by FIG. 12.
  • an electromagnetic shield for example with a magnetic circuit with sheets or ferrites, or a shield made of copper sheet, in order to contain the magnetic field essentially in a direction orthogonal to the plane of the strip.
  • the heating device can operate in a controlled atmosphere or not.
  • Field deflectors can be provided in particular to correct the temperature at the edge Ac, Ad, relative to the central zone of the strip.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Induction Heating (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

The device has a choke coil (B) surrounding a zone of a metallic band (A) transversally to longitudinal direction (D) of the band. The coil has a set of single concave loops (1) whose average plan (P) is orthogonal to longitudinal direction of the band. The loops are arranged in parallel or series among themselves, where each loop has two larger and smaller sides in relation to width and thickness of the band.

Description

DISPOSITIF DE CHAUFFAGE PAR INDUCTION D'UNE BANDE METALLIQUEDEVICE FOR INDUCTION HEATING OF A METAL STRIP
L'invention est relative à un dispositif de chauffage par induction électromagnétique d'une ou plusieurs bandes métalliques, lequel dispositif comprend au moins une bobine inductrice qui entoure une zone de la (des) bande(s) transversalement à la direction longitudinale de la (des) bande (s).The invention relates to a device for heating by electromagnetic induction of one or more metal strips, which device comprises at least one induction coil which surrounds an area of the strip (s) transversely to the longitudinal direction of the ( tapes).
Un tel dispositif de chauffage est utilisé, par exemple, dans des lignes de traitement de bandes métalliques, notamment pour le séchage d'un revêtement tel qu'une couche de peinture, ou le chauffage avant galvanisation ou le chauffage avant recuit appliqué à cette bande qui défile à travers la ou les bobines inductrices, suivant sa direction longitudinale.Such a heating device is used, for example, in processing lines for metal strips, in particular for drying a coating such as a layer of paint, or heating before galvanizing or heating before annealing applied to this strip. which passes through the inductor or coils, in its longitudinal direction.
L'invention a pour but, surtout, de fournir un dispositif de chauffage qui permette de réduire ou de supprimer les défauts dans le revêtement de la bande qui peuvent apparaître avec les dispositifs des chauffage connus à ce jour.The object of the invention is, above all, to provide a heating device which makes it possible to reduce or eliminate the defects in the coating of the strip which may appear with the heating devices known to date.
Selon l'invention, le dispositif de chauffage par induction électromagnétique d'une bande métallique, comprenant au moins une bobine inductrice qui entoure une zone de la bande transversalement à la direction longitudinale de la bande, est caractérisé en ce que la bobine comprend au moins une monospire dont le plan moyen est orthogonal à la direction longitudinale de la bande. Avec une telle disposition, le champ électromagnétique produit ne comporte pas de composante transverse dans la bande, contrairement à l 'état de la technique selon lequel les spires de la bobine sont inclinées sur la direction longitudinale de la bande. La suppression de cette composante transverse permet d'éviter la circulation de courants induits parasites dans la bande qui sont à l'origine de différences de potentiels entre la bande et les rouleaux situés en amont et en aval de l'inducteur. Ces différences de potentiels provoquent des étincelles, ce qui affecte le revêtement et l'état de surface de la bande. De plus on améliore l'homogénéité de température transversale (rives médianes) par rapport à un inducteur de type zig zag. La bobine peut comprendre plusieurs monospires dont les plans moyens sont orthogonaux à la direction longitudinale de la bande. Les monospires peuvent être reliées entre elles en série, ou en parallèle, ou en série-parallèle.According to the invention, the device for heating by electromagnetic induction of a metal strip, comprising at least one inductor coil which surrounds an area of the strip transverse to the longitudinal direction of the strip, is characterized in that the coil comprises at least a monospire whose mean plane is orthogonal to the longitudinal direction of the strip. With such an arrangement, the electromagnetic field produced has no transverse component in the strip, contrary to the state of the art according to which the turns of the coil are inclined on the longitudinal direction of the strip. The elimination of this transverse component makes it possible to avoid the circulation of parasitic induced currents in the strip which are the source of potential differences between the strip and the rollers situated upstream and downstream of the inductor. These differences in potentials cause sparks, which affects the coating and the surface condition of the strip. In addition, the transverse temperature uniformity (median banks) is improved compared to a zig zag inductor. The coil can comprise several monospires whose mean planes are orthogonal to the longitudinal direction of the strip. The monospires can be linked together in series, or in parallel, or in series-parallel.
Chaque monospire peut présenter deux grands côtés en relation avec la largeur de la bande et deux petits côtés en relation avec l'épaisseur de la bande. L'amenée de courant peut être effectuée sur un grand côté ou sur un petit côté.Each monospire can have two long sides in relation to the width of the strip and two short sides in relation to the thickness of the strip. The current supply can be carried out on a long side or on a small side.
De préférence, la longueur des grands côtés de la monospire est supérieure à la largeur de la bande d'une valeur telle qu' un effet de chauffage accentué en bordure de la bande soit évité.Preferably, the length of the long sides of the monospire is greater than the width of the strip by a value such that an accentuated heating effect at the edge of the strip is avoided.
La distance entre les grands côtés de la monospire peut augmenter vers les extrémités des grands côtés de telle sorte que l'effet de chauffage accentué en bordure de la bande soit évité. La monospire peut présenter vers les extrémités de ses grands côtés un contour trapézoïdal dont la grande base constitue un petit côté extérieur. En variante, la monospire peut présenter vers les extrémités de ses grands côtés un contour sensiblement circulaire convexe vers l'extérieur. Avantageusement, le dispositif de chauffage comporte, à chaque extrémité longitudinale de la bobine inductrice à monospires , une monospire de court-circuit fermée sur elle- même et dont le plan moyen est orthogonal à la direction longitudinale de la bande. Le dispositif peut comporter un blindage électromagnétique afin de contenir le champ magnétique essentiellement suivant une direction orthogonale au plan de la bande.The distance between the long sides of the monospire can increase towards the ends of the long sides so that the accentuated heating effect at the edge of the strip is avoided. The monospire can have a trapezoidal outline near the ends of its long sides, the large base of which forms a small outer side. As a variant, the monospire may present towards the ends of its long sides a substantially circular outline convex towards the outside. Advantageously, the heating device comprises, at each longitudinal end of the inductor coil with monospires, a short-circuit monospire closed on itself and whose mean plane is orthogonal to the longitudinal direction of the strip. The device may include an electromagnetic shield in order to contain the magnetic field essentially in a direction orthogonal to the plane of the strip.
Le dispositif peut comporter un déflecteur de champ pour corriger la température en rive par rapport à la zone médiane de la bande.The device may include a field deflector to correct the temperature at the edge relative to the central zone of the strip.
L'invention consiste, mises à part les dispositions exposées ci-dessus, en un certain nombre d'autres dispositions dont il sera plus explicitement question ci-après à propos d'exemples de réalisation décrits avec référence aux dessins annexés, mais qui ne sont nullement limitatifs. Sur ces dessins '• Fig.l est une vue schématique en perspective d'un dispositif de chauffage avec monospire selon l'invention, traversé par une bande métallique.The invention consists, apart from the arrangements set out above, of a certain number of other arrangements which will be more explicitly discussed below in connection with exemplary embodiments described with reference to the accompanying drawings, but which are in no way limiting. In these drawings ' • Fig.l is a schematic perspective view of a heating device with monospire according to the invention, crossed by a metal strip.
Fig. est une coupe schématique verticale d'une monospire avec la bande métallique à l'intérieur. Fig.3 montre une variante de monospire, sans représentation de la bande.Fig. is a schematic vertical section of a monospire with the metal strip inside. Fig.3 shows a variant of monospire, without representation of the band.
Fig.4 montre une autre variante de monospire, semblablement à Fig.3.Fig.4 shows another variant of monospire, similar to Fig.3.
Fig.5 et 6 montrent, en coupe verticale deux variantes de réalisation de monospire entourant une bande qui se déplace horizontalement.Fig. 5 and 6 show, in vertical section, two variant embodiments of a monospire surrounding a strip which moves horizontally.
Fig.7 est un schéma en perspective d'une bobine comportant trois monospires reliées en parallèle avec à chaque extrémité longitudinale une spire de court-circuit. Fig.8 est le schéma électrique du branchement en parallèle des monospires de Fig.7.Fig.7 is a perspective diagram of a coil comprising three monospires connected in parallel with at each longitudinal end a short-circuit turn. Fig.8 is the electrical diagram of the parallel connection of the monospires of Fig.7.
Fig.9 est un schéma en perspective d'une bobine composée de trois monospires branchées en série.Fig. 9 is a perspective diagram of a coil composed of three monospires connected in series.
Fig.10 est le schéma électrique du branchement de Fig.9.Fig.10 is the wiring diagram of Fig.9.
Fig.11 est un schéma en perspective de quatre monospires branchées deux à deux en série-parallèle.Fig. 11 is a perspective diagram of four monospires connected two by two in series-parallel.
Fig.12, enfin, est le schéma électrique du branchement de Fig.11. En se reportant à Fig.l on peut voir un dispositif de chauffage par induction électromagnétique d'une bande d'acier A, ou plus généralement d'une bande métallique. Dans l'exemple de Fig.l, la bande A défile verticalement suivant sa direction longitudinale verticale D représentée par une flèche. Le dispositif de chauffage comprend au moins une bobine inductrice B qui entoure une zone de la bande A transversalement à la direction longitudinale D. La bobine B, selon l'invention, comprend au moins une monospire 1 dont le plan moyen P est orthogonal à la direction longitudinale D de la bande A.Fig.12, finally, is the wiring diagram of Fig.11. Referring to Fig.l we can see a device for electromagnetic induction heating of a steel strip A, or more generally of a metal strip. In the example of Fig.l, the strip A runs vertically along its vertical longitudinal direction D represented by an arrow. The heating device comprises at least one field coil B which surrounds an area of the strip A transversely to the longitudinal direction D. The coil B, according to the invention, comprises at least one monospire 1, the mean plane P of which is orthogonal to the longitudinal direction D of the strip A.
Selon Fig.l, la monospire 1 est constituée par un conducteur plat formant un contour rectangulaire dont les grands côtés la, lb, sont parallèles aux grandes faces de la bande, et les petits côtés le, ld, parallèles à la tranche de la bande.According to Fig.l, the monospire 1 is constituted by a flat conductor forming a rectangular outline whose long sides la, lb, are parallel to the large faces of the strip, and the short sides le, ld, parallel to the edge of the strip .
L'amenée de courant est effectuée sur un grand côté lb selon Fig.l. Ce grand côté lb est ouvert sensiblement à mi- longueur et présente deux lamelles Ll, L2, repliées à angle droit vers l'extérieur par rapport au plan du côté lb pour permettre le raccordement à l'alimentation électrique.The current supply is carried out on a large side lb according to Fig.l. This large side lb is open substantially at mid-length and has two lamellae L1, L2, folded at right angles outward relative to the plane of the side lb to allow connection to the power supply.
En raison de la disposition du plan moyen P orthogonal à la direction D, la bobine inductrice B ne produit pas de courant parasite dans la bande A, contrairement aux bobines multispires classiques qui ne sont pas orthogonales à la direction D. Selon l'invention, l'homogénéité de température dans la largeur de la bande est améliorée. Fig.2 montre une disposition semblable à Fig.l avec une bande A qui se déplace horizontalement au lieu du déplacement vertical de Fig.l.Due to the arrangement of the mean plane P orthogonal to the direction D, the inductor coil B does not produce stray current in the band A, unlike conventional multispire coils which are not orthogonal to the direction D. According to the invention, the temperature uniformity across the width of the strip is improved. Fig.2 shows an arrangement similar to Fig.l with a strip A which moves horizontally instead of the vertical displacement of Fig.l.
Fig.3 illustre une variante de réalisation selon laquelle l'amenée de courant et les lamelles Ll, L2, sont prévues dans la zone médiane d'un petit côté par exemple le. La bande métallique A n'est pas représentée sur Fig.3.Fig.3 illustrates an alternative embodiment according to which the current supply and the lamellae L1, L2, are provided in the median zone on a small side, for example the. The metal strip A is not shown in Fig. 3.
Fig.4 montre une variante de la monospire selon laquelle l'amenée de courant est assurée par des lamelles Ll, L2 prévues à l'une des extrémités d'un petit côté, par exemple le.Fig.4 shows a variant of the monospire according to which the current supply is ensured by lamellae L1, L2 provided at one of the ends of a small side, for example the.
Bien que les dessins illustrent une monospire réalisée avec un conducteur plat, il est clair que d'autres types de conducteur par exemple à section circulaire ou rectangulaire ou association de plusieurs conducteurs de section circulaire ou rectangulaire peuvent servir à réaliser la monospire.Although the drawings illustrate a monospire made with a flat conductor, it is clear that other types of conductor, for example with a circular or rectangular section or association of several conductors of circular or rectangular section can be used to make the monospire.
La longueur H (Fig.2) des grands côtés de la monospire 1 est supérieure à la largeur h de la bande d'une valeur telle qu'un effet de chauffage accentué en bordure de la bande, c'est-à-dire suivant les rives Ac, Ad soit évité. A titre indicatif H peut être supérieur d'environ 25% à h, avec répartition égale de la différence de dimensions de part et d'autre de l'axe longitudinal de la bande A. Fig.5 illustre une variante de réalisation selon laquelle la distance E entre les grands côtés de la monospire augmente vers les extrémités de ces grands côtés de telle sorte que l'effet de chauffage accentué en bordure Ac, Ad de la bande soit encore mieux évité. Selon Fig.5 la monospire 1 présente vers les extrémités de ses grands côtés un contour trapézoïdal Td, Te dont la grande base constitue le petit côté extérieur le, ld, tandis que la petite base du trapèze correspond à la distance entre les grands côtés de la monospire dans la région centrale. Selon la variante de Fig.6, les extrémités des grands côtés de la monospire présentent un contour sensiblement circulaire Cd, Ce convexe vers l'extérieur, également favorable à la limitation ou la suppression de l'effet de chauffage accentué en bordure Ac, Ad. Fig.7 montre schématiquement en perspective une bobine Bl comprenant trois monospires identiques 1, 21 et 31 coaxiales connectées en parallèle selon le schéma électrique de Fig.8. Chaque monospire 1, 21, 31 a son plan moyen orthogonal à la direction longitudinale de la bande métallique (non représentée sur Fig.7) qui défile à l'intérieur des spires. L'alimentation en courant électrique alternatif, généralement haute fréquence, est assurée par des conducteurs reliés en parallèle aux lamelles d'amenée Ll, L2 de chaque monospire.The length H (Fig. 2) of the long sides of the monospire 1 is greater than the width h of the strip by a value such as an accentuated heating effect at the edge of the band, that is to say along the banks Ac, Ad is avoided. As an indication, H can be approximately 25% greater than h, with equal distribution of the difference in dimensions on either side of the longitudinal axis of the strip A. FIG. 5 illustrates an alternative embodiment according to which the distance E between the long sides of the monospire increases towards the ends of these long sides so that the accentuated heating effect at the edge Ac, Ad of the strip is even better avoided. According to Fig. 5 the monospire 1 presents towards the ends of its long sides a trapezoidal contour Td, Te, the large base of which constitutes the small outer side le, ld, while the small base of the trapezium corresponds to the distance between the large sides of the monospire in the central region. According to the variant of FIG. 6, the ends of the long sides of the monospire have a substantially circular contour Cd, this convex towards the outside, also favorable for limiting or eliminating the heating effect accentuated at the edge Ac, Ad Fig.7 shows schematically in perspective a coil Bl comprising three identical monospires 1, 21 and 31 coaxial connected in parallel according to the electrical diagram of Fig.8. Each monospire 1, 21, 31 has its mean plane orthogonal to the longitudinal direction of the metal strip (not shown in Fig.7) which passes inside the turns. The supply of alternating electrical current, generally high frequency, is provided by conductors connected in parallel to the supply strips L1, L2 of each monospire.
Avantageusement, on prévoit à chaque extrémité longitudinale de la bobine Bl une monospire de court-circuit 4, 5 fermée sur elle-même, dont le plan moyen est orthogonal à la direction longitudinale de la bande. Ces monospires 4, 5 de court-circuit permettent de refermer les lignes de champ électromagnétique dont deux sont schématiquement représentées en Me et Md, peu après leur sortie des spires 4 et 5. On évite ainsi que le champ électromagnétique se propage plus loin suivant la direction longitudinale de la bande, de sorte que les perturbations éventuelles créées par ce champ sur des appareils se trouvant en aval ou en amont de la bobine Bl sont évitées.Advantageously, there is provided at each longitudinal end of the coil Bl a short circuit monospire 4, 5 closed on itself, the mean plane of which is orthogonal to the longitudinal direction of the strip. These short circuit monospires 4, 5 allow the electromagnetic field lines to be closed, two of which are schematically represented in Me and Md, shortly after their exit from turns 4 and 5. This prevents the electromagnetic field from propagating further along the longitudinal direction of the strip, so that the possible disturbances created by this field on devices located downstream or upstream of the coil Bl are avoided.
Fig.9 illustre une bobine B2 comportant trois monospires 1, 21, 31 coaxiales reliées en série comme illustré par le schéma électrique de Fig.10. Le plan moyen de chaque monospire est orthogonal à la direction longitudinale D de la bande métallique qui n'est pas représentée sur Fig.9.Fig.9 illustrates a coil B2 comprising three coaxial monospires 1, 21, 31 connected in series as illustrated by the electrical diagram in Fig.10. The mean plane of each monospire is orthogonal to the longitudinal direction D of the metal strip which is not shown in Fig. 9.
Bien entendu, le nombre de monospires branchées en parallèle ou en série peut être différent de trois, par exemple égal à deux ou supérieur à trois.Of course, the number of monospires connected in parallel or in series can be different from three, for example equal to two or more than three.
Fig.11 montre schématiquement en perspective un montage série -parallèle de quatre monospires 1, 21, 31, 41 coaxiales dont le plan moyen est orthogonal à la direction longitudinale D de la bande d'acier non représentée. Les monospires 1, 21 sont reliées en série de même que les monospires 31, 41. Ces deux groupements série sont reliés en parallèle comme illustré schématiquement par Fig.12.Fig.11 shows schematically in perspective a series-parallel assembly of four monospires 1, 21, 31, 41 coaxial whose mean plane is orthogonal to the longitudinal direction D of the steel strip not shown. The monospires 1, 21 are connected in series as well as the monospires 31, 41. These two series groupings are connected in parallel as illustrated diagrammatically by FIG. 12.
Bien entendu, le branchement série -parallèle peut s'effectuer avec un nombre de monospires différent de celui illustré sur Fig.11 et 12.Of course, the series-parallel connection can be made with a number of monospires different from that illustrated in Fig. 11 and 12.
Dans toutes les variantes représentées on peut prévoir des monospires de court-circuit placées à chaque extrémité de la bobine comme dans le cas de Fig.7.In all the variants shown, it is possible to provide short-circuit monospires placed at each end of the coil as in the case of FIG. 7.
On peut également prévoir un blindage électromagnétique, par exemple avec un circuit magnétique à tôles ou ferrites, ou un blindage réalisé en tôle de cuivre, afin de contenir le champ magnétique essentiellement suivant une direction orthogonale au plan de la bande.It is also possible to provide an electromagnetic shield, for example with a magnetic circuit with sheets or ferrites, or a shield made of copper sheet, in order to contain the magnetic field essentially in a direction orthogonal to the plane of the strip.
Le dispositif de chauffage peut fonctionner sous atmosphère contrôlée ou non.The heating device can operate in a controlled atmosphere or not.
On peut prévoir des déflecteurs de champ notamment pour corriger la température en rive Ac, Ad, par raport à la zone médiane de la bande.Field deflectors can be provided in particular to correct the temperature at the edge Ac, Ad, relative to the central zone of the strip.
On pourrait également prévoir des monospires concaves suivant la direction longitudinale de la bande. One could also provide concave monospires in the longitudinal direction of the strip.

Claims

REVENDICATIONS
1. Dispositif de chauffage par induction électromagnétique d'une bande métallique (A) comprenant au moins une bobine inductrice (B) qui entoure une zone de la bande transversalement à la direction longitudinale (D) de la bande, caractérisé en ce que la bobine (B) comprend au moins une monospire (l) dont le plan moyen (P) est orthogonal à la direction longitudinale (D) de la bande.1. Device for heating by electromagnetic induction of a metal strip (A) comprising at least one inductor coil (B) which surrounds an area of the strip transverse to the longitudinal direction (D) of the strip, characterized in that the coil (B) comprises at least one monospire (l) whose mean plane (P) is orthogonal to the longitudinal direction (D) of the strip.
2. Dispositif selon la revendication 1, caractérisé en ce que la bobine comprend plusieurs monospires (Bl) dont les plans moyens sont orthogonaux à la direction longitudinale (D) de la bande, les monospires étant reliées entre elles en série, ou en parallèle, ou en série-parallèle.2. Device according to claim 1, characterized in that the coil comprises several monospires (Bl) whose mean planes are orthogonal to the longitudinal direction (D) of the strip, the monospires being connected together in series, or in parallel, or in series-parallel.
3. Dispositif selon la revendication 1 ou 2, dans lequel chaque monospire présente deux grands côtés en relation avec la largeur de la bande et deux petits côtés en relation avec l'épaisseur de la bande, caractérisé en ce que l'amenée de courant ( L1,L2) est effectuée sur un grand côté (lb).3. Device according to claim 1 or 2, wherein each monospire has two long sides in relation to the width of the strip and two short sides in relation to the thickness of the strip, characterized in that the current supply ( L1, L2) is carried out on a long side (lb).
4. Dispositif selon la revendication 1 ou 2, dans lequel chaque monospire présente deux grands côtés en relation avec la largeur de la bande et deux petits côtés en relation avec l'épaisseur de la bande, caractérisé en ce que l'amenée de courant (Ll, L2) est effectuée sur un petit côté (le).4. Device according to claim 1 or 2, wherein each monospire has two long sides in relation to the width of the strip and two short sides in relation to the thickness of the strip, characterized in that the current supply ( L1, L2) is carried out on a small side (the).
5. Dispositif selon la revendication 3 ou 4, caractérisé en ce que la longueur (H) des grands côtés de la monospire est supérieure à la largeur (h) de la bande (A) d'une valeur telle qu'un effet de chauffage accentué en bordure de la bande soit évité.5. Device according to claim 3 or 4, characterized in that the length (H) of the long sides of the monospire is greater than the width (h) of the strip (A) by a value such as a heating effect accented at the edge of the band is avoided.
6. Dispositif selon la revendication 3, 4 ou 5, caractérisé en ce que la distance (E) entre les grands côtés de la monospire augmente vers les extrémités des grands côtés de telle sorte que l'effet de chauffage accentué en bordure de la bande soit évité.6. Device according to claim 3, 4 or 5, characterized in that the distance (E) between the long sides of the monospire increases towards the ends of the long sides so that that the accentuated heating effect at the edge of the strip is avoided.
7. Dispositif selon la revendication 6, caractérisé en ce que la monospire présente vers les extrémités de ses grands côtés un contour trapézoïdal (Te, Td) dont la grande base constitue un petit côté extérieur (le, ld).7. Device according to claim 6, characterized in that the monospire presents towards the ends of its long sides a trapezoidal contour (Te, Td) whose large base constitutes a small outer side (le, ld).
8. Dispositif selon la revendication 6, caractérisé en ce que la monospire présente vers les extrémités de ses grands côtés un contour sensiblement circulaire (Ce, Cd) convexe vers l'extérieur.8. Device according to claim 6, characterized in that the monospire presents towards the ends of its long sides a substantially circular outline (Ce, Cd) convex towards the outside.
9. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il comporte, à chaque extrémité longitudinale de la bobine inductrice, une monospire de court-circuit (4,5) fermée sur elle-même et dont le plan moyen est orthogonal à la direction longitudinale (D) de la bande.9. Device according to one of the preceding claims, characterized in that it comprises, at each longitudinal end of the induction coil, a short-circuit monospire (4,5) closed on itself and whose mean plane is orthogonal to the longitudinal direction (D) of the strip.
10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte un blindage électromagnétique afin de contenir le champ magnétique essentiellement suivant une direction orthogonale au plan de la bande.10. Device according to any one of the preceding claims, characterized in that it comprises an electromagnetic shielding in order to contain the magnetic field essentially in a direction orthogonal to the plane of the strip.
11. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il comporte au moins un déflecteur de champ pour corriger la température en rive (Ac, Ad) par rapport à la zone médiane de la bande. 11. Device according to one of the preceding claims, characterized in that it comprises at least one field deflector for correcting the temperature at the edge (Ac, Ad) relative to the central zone of the strip.
EP04717127A 2003-03-07 2004-03-04 Device for heating by induction of metal strip Revoked EP1604551B8 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0302892 2003-03-07
FR0302892A FR2852187A1 (en) 2003-03-07 2003-03-07 Heating device for drying paint layer, has coil surrounding metallic band zone transversally to longitudinal direction of band, including single concave loops whose average plan is orthogonal to longitudinal direction of band
PCT/FR2004/000516 WO2004082336A1 (en) 2003-03-07 2004-03-04 Device for heating by induction of metal strip

Publications (3)

Publication Number Publication Date
EP1604551A1 true EP1604551A1 (en) 2005-12-14
EP1604551B1 EP1604551B1 (en) 2008-10-15
EP1604551B8 EP1604551B8 (en) 2008-12-24

Family

ID=32865356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04717127A Revoked EP1604551B8 (en) 2003-03-07 2004-03-04 Device for heating by induction of metal strip

Country Status (11)

Country Link
US (1) US7368689B2 (en)
EP (1) EP1604551B8 (en)
JP (1) JP2006523364A (en)
CN (1) CN100499948C (en)
AT (1) ATE411728T1 (en)
BR (1) BRPI0408135A (en)
CA (1) CA2518269A1 (en)
DE (1) DE602004017143D1 (en)
ES (1) ES2316967T3 (en)
FR (1) FR2852187A1 (en)
WO (1) WO2004082336A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1974588A4 (en) * 2006-01-09 2011-06-22 Inductotherm Corp Electromagnetically shielded induction heating apparatus
FR2902274B1 (en) * 2006-06-09 2008-08-08 Celes Sa HIGH FREQUENCY INDUCTION HEATING DEVICE, AND INDUCTION FURNACE EQUIPPED WITH SUCH A DEVICE
FR2944942B1 (en) * 2009-04-23 2011-07-22 Fives Celes POWER INDUCER HEATING DEVICE, POWER INDUCER, AND OVEN EQUIPPED THEREFOR
EP2523530B1 (en) * 2010-01-06 2016-07-13 Nippon Steel & Sumitomo Metal Corporation Induction heating coil, device for manufacturing of workpiece, and manufacturing method
JP5861831B2 (en) * 2011-07-28 2016-02-16 Ｊｆｅスチール株式会社 Steel plate heating device
DE102012100509B4 (en) * 2012-01-23 2015-10-08 Thyssenkrupp Rasselstein Gmbh Process for refining a metallic coating on a steel strip
CN104775012B (en) * 2014-01-10 2017-02-08 宝山钢铁股份有限公司 Broad-width induction heating device used for uniform heating of strip steel
EP3314028B1 (en) 2015-06-24 2020-01-29 Novelis Inc. Fast response heaters and associated control systems used in combination with metal treatment furnaces
CN105716382A (en) * 2016-04-15 2016-06-29 河南省西工机电设备有限公司 Brushless resistance heating steel strip belt dryer
KR102557715B1 (en) 2016-05-10 2023-07-20 유나이테드 스테이츠 스틸 코포레이션 Annealing process for high-strength steel products and their manufacture
US11993823B2 (en) 2016-05-10 2024-05-28 United States Steel Corporation High strength annealed steel products and annealing processes for making the same
US11560606B2 (en) 2016-05-10 2023-01-24 United States Steel Corporation Methods of producing continuously cast hot rolled high strength steel sheet products
EP3335968B1 (en) 2016-12-14 2019-04-10 FCA Italy S.p.A. Motor-vehicle floor-panel structure including lateral longitudinal beams with locally differentiated features
GB2557667A (en) * 2016-12-15 2018-06-27 Ab Skf Publ Induction heating device
WO2020227438A1 (en) 2019-05-07 2020-11-12 United States Steel Corporation Methods of producing continuously cast hot rolled high strength steel sheet products
CN110340161B (en) * 2019-07-25 2020-08-28 燕山大学 Heating device, rolling device and rolling method for on-line rolling of thick steel plate
CA3149331A1 (en) 2019-08-07 2021-02-11 United States Steel Corporation High ductility zinc-coated steel sheet products
AU2020335005A1 (en) 2019-08-19 2022-03-03 United States Steel Corporation High strength steel products and annealing processes for making the same
DE102019008622A1 (en) * 2019-12-13 2021-06-17 ABP lnduction Systems GmbH Cross-field induction heater

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6298588A (en) * 1985-10-25 1987-05-08 日本軽金属株式会社 Electromagnetic induction heater
US4778971A (en) * 1986-05-23 1988-10-18 Kabushiki Kaisha Meidensha Induction heating apparatus
JPH01232685A (en) * 1988-03-11 1989-09-18 Mitsubishi Heavy Ind Ltd Induction heating device for steel plate
GB8902090D0 (en) * 1989-01-31 1989-03-22 Metal Box Plc Electro-magnetic induction heating apparatus
JPH0349561A (en) * 1989-07-14 1991-03-04 Mitsubishi Heavy Ind Ltd Controller for power source in induction heating for alloying
JPH04294091A (en) * 1991-03-22 1992-10-19 Mitsubishi Heavy Ind Ltd Induction heating device
JP3045007B2 (en) * 1994-06-17 2000-05-22 日本鋼管株式会社 Method and apparatus for induction heating of metal plate
JP2001006864A (en) * 1999-06-25 2001-01-12 Nkk Corp Induction heating device
FR2808163B1 (en) * 2000-04-19 2002-11-08 Celes TRANSVERSE FLOW INDUCTION HEATING DEVICE WITH MAGNETIC CIRCUIT OF VARIABLE WIDTH
JP2002075628A (en) * 2000-08-31 2002-03-15 Nippon Steel Corp Single turn type induction heating coil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004082336A1 *

Also Published As

Publication number Publication date
BRPI0408135A (en) 2006-03-01
WO2004082336A1 (en) 2004-09-23
CN1778144A (en) 2006-05-24
US20060151481A1 (en) 2006-07-13
US7368689B2 (en) 2008-05-06
CA2518269A1 (en) 2004-09-23
JP2006523364A (en) 2006-10-12
ES2316967T3 (en) 2009-04-16
CN100499948C (en) 2009-06-10
EP1604551B8 (en) 2008-12-24
FR2852187A1 (en) 2004-09-10
EP1604551B1 (en) 2008-10-15
DE602004017143D1 (en) 2008-11-27
ATE411728T1 (en) 2008-10-15

Similar Documents

Publication Publication Date Title
EP1604551B8 (en) Device for heating by induction of metal strip
EP1148762B1 (en) Induction heating device having transverse flux and variable width inductor
EP0462011B1 (en) Induction heating coil
FR3027872A1 (en) INDUCTION HEATING COIL WITH UNIFORM HEATING
OA13204A (en) Device for measuring an electric current, current sensor, electric trip unit and cut-off device comprising such a measuring device.
FR2553675A1 (en) METAL WELL WELL FILTER WITH WELDING SOLDER
EP1145842A2 (en) Laminated glazing
CH695403A5 (en) high speed data transmission cable comprising several shielded twisted pairs.
CA2088215C (en) High frequency electric cable
EP2805393A1 (en) Protective sheath, in particular for electric cables, and method for manufacturing same
EP1432073B1 (en) Coaxial collinear antenna
EP3857137A1 (en) Radiant panel intended for installation inside a vehicle passenger compartment
FR2519797A1 (en) Novel configuration for screened cable - uses insulating core with edge groove carrying bare conductor which is exposed to physical contact with braided screen
EP0794545B1 (en) Vacuum switch or circuit breaker
EP0690663A1 (en) Coil arrangement for induction heating of sheet metal
EP2422580B1 (en) Heating device with a power inductor, power inductor and oven with such an equipment
EP0221921B1 (en) Ironless solenoidal magnet
EP1085553A1 (en) Process for manufacturing fuse holder modules in serie and fuse holder modules made by this process
CH691095A5 (en) electric cable high frequency transmission.
EP0592324B1 (en) Magnetic field protection device
FR2555353A1 (en) Variable-current electromagnet, in particular for inductive heating
FR2669766A1 (en) INDUCTANCE, ESPECIALLY FOR SHORT WAVES.
FR2837993A1 (en) Stator ring for motor or generator includes support cylinder with inwardly projecting teeth each carring coils
FR2519476A1 (en) Electromagnetic feed for electronic scanning aerial - comprises dielectric substrate with spaced conductive bands forming horn shaped waveguide
FR2471603A1 (en) Coil arrangement for non-destructive material testing - is bent to provide free insertion-extraction access on three sides

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20050906

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20060613

17Q First examination report despatched

Effective date: 20060613

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FIVE CELES

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REF Corresponds to:

Ref document number: 602004017143

Country of ref document: DE

Date of ref document: 20081127

Kind code of ref document: P

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2316967

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090316

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: INDUCTOTHERM COATING EQUIPMENT S.A.

Effective date: 20090710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090304

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090416

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081015

APBM Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOSNREFNO

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R064

Ref document number: 602004017143

Country of ref document: DE

Ref country code: DE

Ref legal event code: R103

Ref document number: 602004017143

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

RDAF Communication despatched that patent is revoked

Free format text: ORIGINAL CODE: EPIDOSNREV1

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180219

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20180220

Year of fee payment: 15

Ref country code: BE

Payment date: 20180222

Year of fee payment: 15

Ref country code: TR

Payment date: 20180221

Year of fee payment: 15

Ref country code: IT

Payment date: 20180219

Year of fee payment: 15

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 20180116

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20180403

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20221001

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20221001

Year of fee payment: 15