EP2123827A2 - Heat roller assembly, in particular for a calender and method for operating same - Google Patents
Heat roller assembly, in particular for a calender and method for operating same Download PDFInfo
- Publication number
- EP2123827A2 EP2123827A2 EP09160108A EP09160108A EP2123827A2 EP 2123827 A2 EP2123827 A2 EP 2123827A2 EP 09160108 A EP09160108 A EP 09160108A EP 09160108 A EP09160108 A EP 09160108A EP 2123827 A2 EP2123827 A2 EP 2123827A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- inductor
- roller
- arrangement
- heating
- power
- 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
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0253—Heating or cooling the rolls; Regulating the temperature
- D21G1/028—Heating or cooling the rolls; Regulating the temperature using electrical means
Definitions
- the invention relates to a heating roller arrangement, in particular for a calender, having a roller and a heating device which has an inductor arrangement extending over at least a working width of the roller.
- the invention relates to a method for operating a heating roller assembly, wherein a roller is heated by an at least over a working width of the roller extending inductor.
- Such Walkerwalzenan eleven and such a method are for example off DE 10 2005 022 960 A1 known.
- the inductor arrangement extends not only over the entire axial length of the roller body, but also on the pin disks at the two axial ends of the roller body, which have a smaller diameter than the roller body.
- the inductor assembly is adapted in the axial direction of a surface formed by the different diameter of the roller body and pin plate surface contour.
- Another heat roller assembly is off DE 10 2005 034 059 A1 known.
- the inductor arrangement extends over a working width of the roller. A web of this maximum width can then be treated by means of the heating roller.
- the inductor arrangement has a variable effective length.
- An inductor arrangement which extends over the working width of the roller, has the advantage over a heating device which is divided into several sections parallel to the working width of the roller, that over the entire working width a substantially equal heating power can be produced.
- subdivided heaters always creates the problem that results in a transition region in which a different heating power is generated than immediately under a heater. This unevenness is only limitedly reduced if the individual heaters are crossed or overlapped.
- an inductor arrangement extending over the working width of the roller is often unable, in particular for larger roller widths (ie axial lengths of the rollers), to supply the required heating power produce.
- the invention has for its object to provide a Bankwalzenanix with sufficient heating power.
- At least one additional inductor arrangement is used.
- the inductor assemblies then act, as the roll rotates, on individual peripheral portions of the roll.
- Each inductor arrangement supplies a certain heating power to each circumferential section.
- the individual inductor assemblies are circumferentially spaced at different distances from the nip in which a web is to be treated, they are capable of summing up the heating power required by the heating roll to perform the desired treatment of the web. If an inductor assembly fails due to a defect or the like, then one can still continue to produce with the heat roller assembly. However, it would then be necessary to reduce the speed so that the heating roller has a lower power requirement. The greater the speed of the web and thus also the rotational speed of the heating roller, the greater the power requirement of the roller in terms of heating power.
- At least one inductor arrangement is provided more than is required to cover the power requirement. This allows a certain reserve attitude. If an inductor arrangement, which may also be termed a "module”, fails, then one can continue with the remaining inductor arrangements without any loss of quality.
- inductor arrangements can be switched on and off individually. It is then possible to operate the heating roller arrangement in such a way that not all the inductor arrangements are in operation from the outset, but one or more inductor arrangements are kept in reserve. Then, if an in-service inductor assembly fails, for example because of a defect, then one of the surplus inductor assemblies may be put into operation.
- the heating power that can be generated by individual inductor arrangements can be set to a predetermined proportion of the maximum heat output that can be generated. In this case, several or even all Induktoran glovesen simultaneously be operated, but below their maximum heat output. However, the sum of the reduced heating powers is sufficient to cover the power requirement of the roller. If then an inductor arrangement fails, then the heating power of the remaining inductor assemblies is increased, so that the increased heating power is again sufficient to cover the power requirement of the roller.
- the object is achieved in a method of the type mentioned above in that distributed in the circumferential direction using a plurality of inductor arrangements and covers the power required by the roller power requirement by the sum of the heating power of the individual inductor arrangements.
- At least one inductor arrangement is used more than is required to cover the power requirement is. As mentioned above, this serves to "reserve”, so is a preventive measure in the event that an inductor fails.
- inductor arrangements are operated with part of their full power and, if one inductor arrangement fails, the power of at least one inductor arrangement is increased. For example, if you have five inductor assemblies distributed around the circumference of the roll, then it will be enough to run each inductor assembly at 80% of its power. Then, if one of the inductor assemblies fails, the remaining inductor assemblies are increased to 100% power output. This variant is a gentle solution. It also offers the advantage that all inductor arrangements are always ready for operation and only have to be adapted in terms of performance. An error that leads to the failure of an inductor arrangement, then shows relatively early, so that appropriate countermeasures can be taken.
- a heat roller assembly 1 comprises a roller 2 and a plurality of inductor assemblies 3-7 distributed around the circumference of the roller.
- Each inductor assembly 3-7 generates eddy currents in the surface of the roller 2, which must be electrically conductive for this purpose. The eddy currents in turn generate an electrical power loss, which leads to an increase in temperature of the surface of the roller 2. If the roller 2 cooperates in a calender with a counter-roller 8 shown in dashed lines, then a paper web, which is guided by a nip 9 between the roller 2 and the counter-roller 8, subjected to an elevated temperature.
- Each of the inductor assemblies 3-7 can transmit a certain heating power to the roller 2.
- the roller itself has a certain power requirement.
- the power requirement is u.a. according to which speed the paper web (or another web) is guided through the nip 9, which heat the paper web is to be supplied and how large the losses of the heating roller 2 are in the environment.
- the power requirement of the roller 2 can, however, be calculated in advance or at least estimated so far that the inductor arrangements 3-7 can be dimensioned accordingly.
- At least one inductor arrangement 3-7 is used more than is required in itself for the heating power supply of the roller. For example, if the roll has a power requirement of 400 kW, then one uses inductor assemblies 3-7, each of which could transfer 100 kW of heating power to the roll 2.
- the 100 kW heating power of an inductor arrangement 3-7 then form a reserve. It is then possible to operate the heating roller arrangement 1 with only four inductor arrangements 3-6 and to keep an inductor arrangement 7 in reserve. If then one of the operating inductor assemblies 3-6 fails, you can switch the remaining inductor 7, so that in turn the full, the power requirement of the roller 2 corresponding heating power is transmitted to the roller 2.
- the inductor assemblies 3-7 extend as shown in FIGS Fig. 2 to 4 It can be seen over the entire axial length of the roller 2. Thus, there are no transition zones along the axial extent or "width" of the roller, in which an uneven heat transfer and thus an uneven temperature could occur.
Landscapes
- General Induction Heating (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Treatment Of Fiber Materials (AREA)
- Paper (AREA)
Abstract
Description
Die Erfindung betrifft eine Heizwalzenanordnung, insbesondere für einen Kalander, mit einer Walze und einer Heizeinrichtung, die eine sich zumindest über eine Arbeitsbreite der Walze erstreckende Induktoranordnung aufweist.The invention relates to a heating roller arrangement, in particular for a calender, having a roller and a heating device which has an inductor arrangement extending over at least a working width of the roller.
Ferner betrifft die Erfindung ein Verfahren zum Betreiben einer Heizwalzenanordnung, bei dem man eine Walze durch eine sich zumindest über eine Arbeitsbreite der Walze erstreckende Induktoranordnung beheizt.Furthermore, the invention relates to a method for operating a heating roller assembly, wherein a roller is heated by an at least over a working width of the roller extending inductor.
Eine derartige Heizwalzenanordnung und ein derartiges Verfahren sind beispielsweise aus
Eine andere Heizwalzenanordnung ist aus
Eine Induktoranordnung, die sich über die Arbeitsbreite der Walze erstreckt, hat gegenüber einer Heizeinrichtung, die parallel zur Arbeitsbreite der Walze in mehrere Abschnitte unterteilt ist, den Vorteil, dass man über die gesamte Arbeitsbreite eine im Wesentlichen gleiche Heizleistung erzeugen kann. Bei unterteilten Heizeinrichtungen entsteht immer das Problem, dass sich ein Übergangsbereich ergibt, in dem eine andere Heizleistung erzeugt wird als unmittelbar unter einem Heizer. Diese Ungleichmäßigkeit wird auch nur dann beschränkt vermindert, wenn man die einzelnen Heizer verschränkt oder überlappen lässt. Allerdings ergeben sich bei Ausfall eines Heizers Probleme, die bis zum Ausschuss der mit der Heizwalzenanordnung behandelten Bahn führen können. Wenn nämlich ein Heizer ausfällt, ergibt sich ein Streifen auf der Bahn, der andere Glanz-, Glätte- und Dickenprofile aufweist als der Rest der Bahn.An inductor arrangement, which extends over the working width of the roller, has the advantage over a heating device which is divided into several sections parallel to the working width of the roller, that over the entire working width a substantially equal heating power can be produced. In subdivided heaters always creates the problem that results in a transition region in which a different heating power is generated than immediately under a heater. This unevenness is only limitedly reduced if the individual heaters are crossed or overlapped. However, if a heater fails, problems arise that may result in rejects of the web treated with the heat roller assembly. Namely, if a heater fails, a streak will result on the web having different gloss, smoothness and thickness profiles than the rest of the web.
Eine sich über die Arbeitsbreite der Walze erstreckende Induktoranordnung ist jedoch insbesondere bei größeren Walzenbreiten (d.h. axialen Längen der Walzen) vielfach nicht in der Lage, die erforderliche Heizleistung zu erzeugen. Je länger die Induktoranordnung wird, desto größer ist ihr elektrischer Widerstand. Dementsprechend lässt sich die von einer Induktoranordnung abgebbare Heizleistung nicht beliebig steigern.However, an inductor arrangement extending over the working width of the roller is often unable, in particular for larger roller widths (ie axial lengths of the rollers), to supply the required heating power produce. The longer the inductor arrangement, the greater their electrical resistance. Accordingly, the heat output that can be output by an inductor arrangement can not be increased arbitrarily.
Der Erfindung liegt die Aufgabe zugrunde, eine Heizwalzenanordnung mit ausreichender Heizleistung bereitzustellen.The invention has for its object to provide a Heizwalzenanordnung with sufficient heating power.
Diese Aufgabe wird bei einer Heizwalzenanordnung der eingangs genannten Art dadurch gelöst, dass in Umfangsrichtung der Walze verteilt mindestens eine weitere Induktoranordnung angeordnet ist und die Summe der von den Induktoranordnungen erzeugbaren Heizleistung mindestens dem Leistungsbedarf der Walze entspricht.This object is achieved in a heat roller assembly of the type mentioned in that distributed in the circumferential direction of the roller at least one further inductor arrangement is arranged and the sum of the heat generated by the Induktoranordnungen heat output at least equal to the power requirement of the roller.
Mit dieser Ausgestaltung verwendet man mindestens eine zusätzliche Induktoranordnung. Die Induktoranordnungen wirken dann, wenn sich die Walze dreht, in Folge auf einzelne Umfangsabschnitte der Walze. Jede Induktoranordnung führt jedem Umfangsabschnitt eine gewisse Heizleistung zu. Auch wenn die einzelnen Induktoranordnungen dann in Umfangsrichtung unterschiedliche Entfernungen zu dem Nip haben, in dem eine Bahn behandelt werden soll, sind sie jedoch in der Lage, in Summe die Heizleistung zuzuführen, die die Heizwalze benötigt, um die gewünschte Behandlung der Bahn durchzuführen. Wenn eine Induktoranordnung aufgrund eines Defekts oder dergleichen ausfällt, dann kann man mit der Heizwalzenanordnung immer noch weiter produzieren. Allerdings wäre es dann erforderlich, die Geschwindigkeit zu reduzieren, so dass die Heizwalze einen geringeren Leistungsbedarf hat. Je größer die Geschwindigkeit der Bahn und damit auch die Rotationsgeschwindigkeit der Heizwalze ist, desto größer ist der Leistungsbedarf der Walze an Heizleistung.With this embodiment, at least one additional inductor arrangement is used. The inductor assemblies then act, as the roll rotates, on individual peripheral portions of the roll. Each inductor arrangement supplies a certain heating power to each circumferential section. However, even if the individual inductor assemblies are circumferentially spaced at different distances from the nip in which a web is to be treated, they are capable of summing up the heating power required by the heating roll to perform the desired treatment of the web. If an inductor assembly fails due to a defect or the like, then one can still continue to produce with the heat roller assembly. However, it would then be necessary to reduce the speed so that the heating roller has a lower power requirement. The greater the speed of the web and thus also the rotational speed of the heating roller, the greater the power requirement of the roller in terms of heating power.
Vorzugsweise ist mindestens eine Induktoranordnung mehr vorgesehen als zur Deckung des Leistungsbedarfs erforderlich ist. Dies ermöglicht eine gewisse Reservehaltung. Wenn eine Induktoranordnung, die man auch als "Modul" bezeichnen kann, ausfällt, dann kann man mit den verbleibenden Induktoranordnungen ohne Qualitätseinbuße weiterfahren.Preferably, at least one inductor arrangement is provided more than is required to cover the power requirement. This allows a certain reserve attitude. If an inductor arrangement, which may also be termed a "module", fails, then one can continue with the remaining inductor arrangements without any loss of quality.
Dies ist in einer Alternative dadurch möglich, dass die Induktoranordnungen einzeln an- und abschaltbar sind. Man kann die Heizwalzenanordnung dann so betreiben, dass von vorneherein nicht alle Induktoranordnungen in Betrieb sind, sondern eine oder mehrere Induktoranordnungen in Reserve gehalten werden. Wenn dann eine im Betrieb befindliche Induktoranordnung ausfällt, beispielsweise aufgrund eines Defekts, dann kann eine der überzähligen Induktoranordnungen in Betrieb genommen werden.This is possible in an alternative in that the inductor arrangements can be switched on and off individually. It is then possible to operate the heating roller arrangement in such a way that not all the inductor arrangements are in operation from the outset, but one or more inductor arrangements are kept in reserve. Then, if an in-service inductor assembly fails, for example because of a defect, then one of the surplus inductor assemblies may be put into operation.
In einer anderen Alternative, die auch zusätzlich verwendet werden kann, kann vorgesehen sein, dass die von einzelnen Induktoranordnungen erzeugbare Heizleistung auf einen vorbestimmten Anteil an der maximal erzeugbaren Heizleistung einstellbar ist. In diesem Fall können mehrere oder auch alle Induktoranordnungen gleichzeitig betrieben werden, allerdings unterhalb ihrer maximal abgebbaren Heizleistung. Die Summe der verminderten Heizleistungen reicht aber aus, um den Leistungsbedarf der Walze zu decken. Wenn dann eine Induktoranordnung ausfällt, dann wird die Heizleistung der übrigen Induktoranordnungen erhöht, so dass die erhöhte Heizleistung wiederum ausreicht, um den Leistungsbedarf der Walze zu decken.In another alternative, which can also be used in addition, it can be provided that the heating power that can be generated by individual inductor arrangements can be set to a predetermined proportion of the maximum heat output that can be generated. In this case, several or even all Induktoranordnungen simultaneously be operated, but below their maximum heat output. However, the sum of the reduced heating powers is sufficient to cover the power requirement of the roller. If then an inductor arrangement fails, then the heating power of the remaining inductor assemblies is increased, so that the increased heating power is again sufficient to cover the power requirement of the roller.
Die Aufgabe wird bei einem Verfahren der eingangs genannten Art dadurch gelöst, dass man in Umfangsrichtung verteilt mehrere Induktoranordnungen verwendet und den von der Walze benötigten Leistungsbedarf durch die Summe der Heizleistungen der einzelnen Induktoranordnungen deckt.The object is achieved in a method of the type mentioned above in that distributed in the circumferential direction using a plurality of inductor arrangements and covers the power required by the roller power requirement by the sum of the heating power of the individual inductor arrangements.
In diesem Fall ist es nicht mehr erforderlich, die gesamte von der Walze benötigte Heizleistung über eine einzelne Induktoranordnung zu decken. Man kann vielmehr zwei oder mehr Induktoranordnungen verwenden, die in Umfangsrichtung der Walze verteilt angeordnet sind. Durch die räumliche Anordnung in Umfangsrichtung ist im Übrigen eine praktisch beliebige Anpassung an unterschiedliche Durchmesser der Walze möglich. Hierzu muss man lediglich die Halterung der Induktoranordnungen anpassen. Dies ergibt konstruktiven Freiraum bei Umbauprojekten, wo der verfügbare Bauraum vielfach eingeschränkt ist.In this case, it is no longer necessary to cover the entire heating power required by the roller via a single inductor arrangement. Rather, one can use two or more inductor arrangements distributed in the circumferential direction of the roll. By the spatial arrangement in the circumferential direction by the way a virtually arbitrary adaptation to different diameters of the roller is possible. For this one has to adapt only the holder of the inductor arrangements. This results in constructive freedom in renovation projects, where the available space is often limited.
Vorzugsweise verwendet man mindestens eine Induktoranordnung mehr als zur Deckung des Leistungsbedarfs erforderlich ist. Wie oben erwähnt, dient dies zur "Reservehaltung", bildet also eine vorbeugende Maßnahme für den Fall, dass eine Induktoranordnung ausfällt.Preferably, at least one inductor arrangement is used more than is required to cover the power requirement is. As mentioned above, this serves to "reserve", so is a preventive measure in the event that an inductor fails.
Hierbei ist von Vorteil, wenn man mindestens eine Induktoranordnung außer Betrieb hält und bei Ausfall einer anderen Induktoranordnung zuschaltet. Dementsprechend wird der Leistungsbedarf der Walze durch eine gewisse Anzahl von Induktoranordnungen gedeckt. Mindestens eine weitere Induktoranordnung wird in Reserve gehalten, aber nicht eingeschaltet oder betrieben. Wenn dann eine Induktoranordnung ausfällt, dann kann man die bislang nicht verwendete Induktoranordnung verwenden, um die dann fehlende Heizleistung wieder zur Verfügung zu stellen. Die Heizwalzenanordnung kann dann praktisch ohne Unterbrechung oder nur mit einer zeitlich geringen Unterbrechung weiter betrieben werden.It is advantageous if one keeps at least one inductor arrangement out of service and switches on failure of another inductor arrangement. Accordingly, the power requirement of the roller is covered by a certain number of inductor arrangements. At least one further inductor arrangement is kept in reserve, but not switched on or operated. If then an inductor fails, then you can use the previously unused inductor to provide the then lack of heating power again. The heating roller assembly can then be operated practically without interruption or only with a time-limited interruption.
Alternativ dazu kann vorgesehen sein, dass man mehrere Induktoranordnungen mit einem Teil ihrer vollen Leistung betreibt und bei Ausfall einer Induktoranordnung die Leistung mindestens einer Induktoranordnung erhöht. Wenn man beispielsweise fünf Induktoranordnungen am Umfang der Walze verteilt hat, dann reicht es aus, wenn man jede Induktoranordnung mit 80 % ihrer Leistung betreibt. Wenn dann eine der Induktoranordnungen ausfällt, werden die verbleibenden Induktoranordnungen auf 100 % Leistungsabgabe erhöht. Diese Variante ist eine schonende Lösung. Sie bietet darüber hinaus den Vorteil, dass alle Induktoranordnungen immer betriebsbereit sind und nur in der Leistung angepasst werden müssen. Ein Fehler, der zum Ausfall einer Induktoranordnung führt, zeigt sich dann relativ frühzeitig, so dass geeignete Gegenmaßnahmen getroffen werden können.Alternatively, it can be provided that several inductor arrangements are operated with part of their full power and, if one inductor arrangement fails, the power of at least one inductor arrangement is increased. For example, if you have five inductor assemblies distributed around the circumference of the roll, then it will be enough to run each inductor assembly at 80% of its power. Then, if one of the inductor assemblies fails, the remaining inductor assemblies are increased to 100% power output. This variant is a gentle solution. It also offers the advantage that all inductor arrangements are always ready for operation and only have to be adapted in terms of performance. An error that leads to the failure of an inductor arrangement, then shows relatively early, so that appropriate countermeasures can be taken.
Die Erfindung wird im Folgenden anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung beschrieben. Hierin zeigen:
- Fig. 1
- eine schematische Seitenansicht einer Heizwalzenanordnung,
- Fig. 2
- eine Vorderansicht der Heizwalzenanordnung,
- Fig. 3
- eine perspektivische Ansicht der Heizwalzenanordnung und
- Fig. 4
- eine perspektivische Ansicht der Heizwalzenanordnung aus einem anderen Sichtwinkel.
- Fig. 1
- a schematic side view of a heat roller assembly,
- Fig. 2
- a front view of the heating roller assembly,
- Fig. 3
- a perspective view of the heating roller assembly and
- Fig. 4
- a perspective view of the heating roller assembly from a different angle.
Eine Heizwalzenanordnung 1 weist eine Walze 2 und mehrere am Umfang der Walze verteilte Induktoranordnungen 3-7 auf. Jede Induktoranordnung 3-7 erzeugt in der Oberfläche der Walze 2, die zu diesem Zweck elektrisch leitfähig sein muss, Wirbelströme. Die Wirbelströme wiederum erzeugen eine elektrische Verlustleistung, die zu einer Temperaturerhöhung der Oberfläche der Walze 2 führt. Wenn die Walze 2 in einem Kalander mit einer gestrichelt dargestellten Gegenwalze 8 zusammenwirkt, dann wird eine Papierbahn, die durch einen Nip 9 zwischen der Walze 2 und der Gegenwalze 8 geführt ist, mit einer erhöhten Temperatur beaufschlagt.A
Jede der Induktoranordnungen 3-7 kann eine bestimmte Heizleistung an die Walze 2 übertragen. Die Walze selbst hat einen bestimmten Leistungsbedarf. Der Leistungsbedarf richtet sich u.a. danach, mit welcher Geschwindigkeit die Papierbahn (oder eine andere Bahn) durch den Nip 9 geführt wird, welche Wärme der Papierbahn zugeführt werden soll und wie groß die Verluste der Heizwalze 2 in die Umgebung sind. Der Leistungsbedarf der Walze 2 lässt sich aber im Voraus errechnen oder zumindest so weit abschätzen, dass man die Induktoranordnungen 3-7 entsprechend dimensionieren kann.Each of the inductor assemblies 3-7 can transmit a certain heating power to the
Im vorliegenden Fall verwendet man mindestens eine Induktoranordnung 3-7 mehr, als an und für sich zur Heizleistungs-Versorgung der Walze erforderlich ist. Wenn beispielsweise die Walze einen Leistungsbedarf von 400 kW hat, dann verwendet man Induktoranordnungen 3-7, von denen jede 100 kW Heizleistung auf die Walze 2 übertragen könnte.In the present case, at least one inductor arrangement 3-7 is used more than is required in itself for the heating power supply of the roller. For example, if the roll has a power requirement of 400 kW, then one uses inductor assemblies 3-7, each of which could transfer 100 kW of heating power to the
Die 100 kW Heizleistung einer Induktoranordnung 3-7 bilden dann eine Reserve. Man kann dann so vorgehen, dass man die Heizwalzenanordnung 1 mit nur vier Induktoranordnungen 3-6 betreibt und eine Induktoranordnung 7 in Reserve hält. Wenn dann eine der im Betrieb befindlichen Induktoranordnungen 3-6 ausfällt, kann man die verbleibende Induktoranordnung 7 zuschalten, so dass wiederum die volle, dem Leistungsbedarf der Walze 2 entsprechende Heizleistung auf die Walze 2 übertragen wird.The 100 kW heating power of an inductor arrangement 3-7 then form a reserve. It is then possible to operate the
Man kann auch alle Induktoranordnungen 3-7 gleichzeitig betreiben, aber mit verminderter Heizleistung, im vorliegenden Fall beispielsweise 80 kW. Wenn dann eine Induktoranordnung 5 ausfällt, dann wird die Heizleistung der verbleibenden Induktoranordnungen 3, 4, 6, 7 auf 100 kW erhöht, so dass wiederum die geforderten 400 kW zur Verfügung stehen.It is also possible to operate all the inductor arrangements 3-7 simultaneously, but with reduced heating power, in the present case 80 kW, for example. If then an inductor 5 fails, then the heating power of the remaining
Die Induktoranordnungen 3-7 erstrecken sich, wie dies aus den
Wenn mehr als eine Induktoranordnung 3-7 ausfallen würde, was aufgrund der beschriebenen Auslegung an und für sich nicht zu befürchten ist, dann ist ein Weiterbetrieb der Heizwalzenanordnung 1 immer noch möglich, wobei man die fehlende Heizleistung dann durch eine reduzierte Geschwindigkeit kompensieren kann.If more than one inductor 3-7 would fail, which in itself is not to be feared because of the described design, then a further operation of the
Die Auslegung einer derartigen Heizwalzenanordnung 1 ist relativ einfach. Man kann die benötigte Leistung einfach skalieren, indem man bei einem höheren Leistungsbedarf entsprechend mehr Induktoranordnungen verwendet.The design of such a
Da man einzelne Induktoranordnungen verwendet, kann man relativ leicht eine Anpassung an unterschiedliche Durchmesser der Walze 2 durchführen. Im Grunde wäre dann nur eine Änderung der nicht näher dargestellten Halterung für die Induktoranordnungen 3-7 notwendig.Since one uses individual Induktoranordnungen, one can relatively easily adapt to different Carry out the diameter of
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810024455 DE102008024455A1 (en) | 2008-05-20 | 2008-05-20 | Heating roller assembly, in particular for a calender, and method for operating a heating roller assembly |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2123827A2 true EP2123827A2 (en) | 2009-11-25 |
EP2123827A3 EP2123827A3 (en) | 2013-10-30 |
EP2123827B1 EP2123827B1 (en) | 2014-10-08 |
Family
ID=40984986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20090160108 Not-in-force EP2123827B1 (en) | 2008-05-20 | 2009-05-13 | Heat roller assembly, in particular for a calender and method for operating same |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2123827B1 (en) |
DE (1) | DE102008024455A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016062843A1 (en) * | 2014-10-24 | 2016-04-28 | Voith Patent Gmbh | Calender profiling |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020114812A1 (en) * | 2020-06-04 | 2021-12-09 | Breyer Gmbh Maschinenfabrik | Method for producing a flat substrate |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4788779A (en) | 1987-06-15 | 1988-12-06 | Pulp And Paper Research Institute Of Canada | Method and apparatus for the rapid consolidation and/or drying of moist porous webs |
US20050276016A1 (en) | 2004-06-10 | 2005-12-15 | Bruce Taylor | Method and apparatus for water-cooling power modules in an induction calendering control actuator system used on web manufacturing processes |
DE102005019475A1 (en) | 2005-04-27 | 2006-11-09 | Voith Patent Gmbh | Moistening calender for paper mill has array of heaters arranged parallel to nip gap and linked to a control system with moistening unit |
DE102005022960A1 (en) | 2005-05-19 | 2006-12-21 | Voith Patent Gmbh | Hot roll inductor arrangement which in axial direction is adapted to surface contour formed by different diameters of roll body and journal plates |
DE102005034059A1 (en) | 2005-07-21 | 2007-01-25 | Voith Patent Gmbh | Inductively-heated roller for decorative paper calender, includes axi-parallel conductors of variable effective length |
EP1777343A1 (en) | 2005-10-19 | 2007-04-25 | Voith Patent GmbH | Calender |
-
2008
- 2008-05-20 DE DE200810024455 patent/DE102008024455A1/en not_active Withdrawn
-
2009
- 2009-05-13 EP EP20090160108 patent/EP2123827B1/en not_active Not-in-force
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4788779A (en) | 1987-06-15 | 1988-12-06 | Pulp And Paper Research Institute Of Canada | Method and apparatus for the rapid consolidation and/or drying of moist porous webs |
US20050276016A1 (en) | 2004-06-10 | 2005-12-15 | Bruce Taylor | Method and apparatus for water-cooling power modules in an induction calendering control actuator system used on web manufacturing processes |
DE102005019475A1 (en) | 2005-04-27 | 2006-11-09 | Voith Patent Gmbh | Moistening calender for paper mill has array of heaters arranged parallel to nip gap and linked to a control system with moistening unit |
DE102005022960A1 (en) | 2005-05-19 | 2006-12-21 | Voith Patent Gmbh | Hot roll inductor arrangement which in axial direction is adapted to surface contour formed by different diameters of roll body and journal plates |
DE102005034059A1 (en) | 2005-07-21 | 2007-01-25 | Voith Patent Gmbh | Inductively-heated roller for decorative paper calender, includes axi-parallel conductors of variable effective length |
EP1777343A1 (en) | 2005-10-19 | 2007-04-25 | Voith Patent GmbH | Calender |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016062843A1 (en) * | 2014-10-24 | 2016-04-28 | Voith Patent Gmbh | Calender profiling |
Also Published As
Publication number | Publication date |
---|---|
EP2123827A3 (en) | 2013-10-30 |
DE102008024455A1 (en) | 2009-11-26 |
EP2123827B1 (en) | 2014-10-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102013216290B4 (en) | Heating device and method for operating a heating device | |
EP0735185B1 (en) | Calander for two-sided treatment of a paper web | |
EP2123827B1 (en) | Heat roller assembly, in particular for a calender and method for operating same | |
DE10209544B4 (en) | Method and device for heating a roller | |
EP2906075B1 (en) | Heating plate for a hair-styling iron | |
DE212021000359U1 (en) | Device for heating an embossing roller in an embossing-laminating device | |
EP1516955A1 (en) | Calender | |
DE102006000142A1 (en) | Belt guide roller for use in e.g. coating device, has tubular casing part that is rotated along with end flanges, where electrical resistors are provided at outer surfaces of end flanges for heating end flanges | |
EP1314819B1 (en) | Calender and method for smoothing paper or cardboard webs | |
EP1557490A1 (en) | Method of operating a multi-roll calender and calender | |
DE102017202235A1 (en) | Method of operating a hob and hob | |
DE102018119393A1 (en) | RADIAL GUIDE BEARING WITH STORAGE SEGMENTS | |
DE102008029513B3 (en) | Heating device for inductive heating of calendar roll, has support beam with majority of individual ribs serving to calendar roll interspaced with each other, and inductor device transverse relocatably supported to beam at free ends of ribs | |
EP1746205B1 (en) | Method for operating a calender and calender | |
DE202008016510U1 (en) | processing device | |
EP1371776B1 (en) | Calender and method for operating a calender | |
EP1067650B1 (en) | Control arrangement For the distribution of electric power and method of operation | |
EP1719837B1 (en) | Calender | |
DE102005019475A1 (en) | Moistening calender for paper mill has array of heaters arranged parallel to nip gap and linked to a control system with moistening unit | |
DE102022106799A1 (en) | Heat transfer system and process | |
WO2016062843A1 (en) | Calender profiling | |
EP1712676B1 (en) | Calender roll and calender | |
DE102016123545B4 (en) | Process for the conversion of a roll aggregate for the treatment of a fibrous web | |
DE102013200614A1 (en) | Fiber web polishing device, has soft coating layer whose width is lesser than width of soft roller, where soft coating layer is provided with polymeric and fiber reinforced materials, and auxiliary driver driving in high temperature area | |
EP4004280A1 (en) | Pressing unit |
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 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: D21G 1/02 20060101AFI20130920BHEP |
|
17P | Request for examination filed |
Effective date: 20140430 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20140624 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: RUESING, FRANK Inventor name: WIEMER, PETER Inventor name: BAADER, UWE Inventor name: HERMSEN, THOMAS Inventor name: HISSEN, AXEL Inventor name: SCHNYDER, EUGEN Inventor name: SCHNEID, JOSEF |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
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 HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 690709 Country of ref document: AT Kind code of ref document: T Effective date: 20141015 Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502009010058 Country of ref document: DE Effective date: 20141120 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20141008 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20141008 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20150209 Ref country code: LT 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: 20141008 Ref country code: NO 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: 20150108 Ref country code: ES 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: 20141008 Ref country code: IS 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: 20150208 |
|
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: 20141008 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: 20150109 Ref country code: HR 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: 20141008 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: 20141008 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: 20141008 Ref country code: LV 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: 20141008 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502009010058 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20141008 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: 20141008 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: 20141008 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: 20141008 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: 20141008 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT 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: 20141008 |
|
26N | No opposition filed |
Effective date: 20150709 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502009010058 Country of ref document: DE |
|
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: 20150513 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150531 Ref country code: MC 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: 20141008 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150531 Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150513 Ref country code: LU 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: 20150513 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20160129 |
|
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: 20141008 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150513 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151201 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150513 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150601 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 690709 Country of ref document: AT Kind code of ref document: T Effective date: 20150513 |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20150513 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT 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: 20141008 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20141008 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; INVALID AB INITIO Effective date: 20090513 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR 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: 20141008 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK 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: 20141008 |