EP1830146B1 - Apparatus for and method of heat treatment of textile webs - Google Patents

Apparatus for and method of heat treatment of textile webs Download PDF

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Publication number
EP1830146B1
EP1830146B1 EP07001415A EP07001415A EP1830146B1 EP 1830146 B1 EP1830146 B1 EP 1830146B1 EP 07001415 A EP07001415 A EP 07001415A EP 07001415 A EP07001415 A EP 07001415A EP 1830146 B1 EP1830146 B1 EP 1830146B1
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European Patent Office
Prior art keywords
web
ventilation
zone
zones
transport direction
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EP07001415A
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German (de)
French (fr)
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EP1830146A2 (en
EP1830146A3 (en
Inventor
Michael Christ
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Brueckner Trockentechnik GmbH and Co KG
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Brueckner Trockentechnik GmbH and Co KG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/101—Supporting materials without tension, e.g. on or between foraminous belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/12—Controlling movement, tension or position of material

Definitions

  • the invention relates to a device and a method for heat treatment of textile webs with a plurality of successive treatment zones, which are designed as impact jet ventilation zones.
  • a device for the treatment of textile webs which consists essentially of a housing, means for transporting the web in the extended state through the housing and a nozzle system for inflating treatment gas on the web.
  • the nozzle system usually has upper and lower nozzle boxes, which extend over the entire width of the web, so that the web can be acted upon both from above and from below with a treatment gas.
  • the treatment gas for example heated air
  • the treatment gas is circulated, i. repeatedly heated, applied to the web and returned.
  • a part of the treatment gas is discharged via exhaust nozzles and replaced by fresh air via fresh air supplied fresh air.
  • a device for heat treatment of textile webs which has a plurality of successive impact jet ventilation zones. Before the web passes through the individual treatment fields, it must be supplied in a suitable manner.
  • usually means for supporting the web are provided, which are formed for example by sheets or conveyor belts.
  • a carrying air table for supporting the web by targeted Heilbeetzschung intended.
  • the support air table therefore has on its upper side nozzles which are aligned such that the web transversely to the transport direction assumes a wave profile. In this way, just at the beginning of the housing, when the moist web of course still hangs very far, an effective support done without the web, for example, by so-called "ironing effects" is impaired.
  • GB 2 043 860 A disclose drying devices for textile webs with a large number of ventilation zones.
  • the invention is based on the object to improve the device or the method for heat treatment of textile webs to the effect that a further energy saving and at the same time an increase in the efficiency of the heat treatment is possible.
  • the inventive device for heat treatment of textile webs consists essentially of several successive treatment zones, which are designed as impact jet ventilation zones and means for deriving the exhaust air of the impact jet ventilation zones. Furthermore, an upstream in the transport direction of the web treatment zone is provided, which is designed as a ventilation zone, wherein the web is in the ventilation zone with at least one aligned in the transport direction of the web lanyard in contact and wherein the means for discharging the exhaust air of the baffle vent zones connected to the ventilation zone such are that the exhaust air is passed through the web and include a fan which is arranged in the region of the aeration zone such that it pulls the exhaust air through the web or pushes the exhaust air through the web.
  • the web is exposed in a plurality of successive treatment zones of a collision jet ventilation.
  • the web In an upstream in the transport direction of the web aeration zone, the web is in contact with a direction of transport of the web carrier tape and is ventilated by the exhaust air of the impingement jet ventilation by a arranged in the ventilation zone fan pulls the exhaust air through the web or the exhaust air through the web suppressed.
  • the treatment gas for example heated air
  • the treatment gas absorbs the moisture.
  • the exhaust gases are passed through the web in the upstream aeration zone, the exhaust air can continue to cool down to the cooling limit temperature, wherein energy is supplied to the web. This means an increase in efficiency of the drying performance and an energy saving.
  • two fans are provided, so that the ventilation zone is arranged between the two fans and the exhaust air can be pulled or pushed through the web.
  • the impact jet ventilation zones can be designed so that the exhaust air is introduced into at least one downstream in the transport direction of the web impact air ventilation zone in a previous impingement jet ventilation zone. As a result, the exhaust air is guided counter to the transport direction of the web through the impingement jet ventilation zones, whereby the treatment gas / exhaust gas can concentrate with moisture or preparation.
  • the web is in the ventilation zone with at least two juxtaposed and in the transport direction of the
  • each carrier tape drive means are assigned to accelerate and retard the tapes for removing non-linear distortion relative to the transport speed of the web.
  • the straps serve as a support surface for the web during the ventilation and at the same time allow the correction of distortion.
  • DE-A-10 2006 003 384 For the mode of action of the two straps for correcting distortion, reference is hereby made to DE-A-10 2006 003 384.
  • the operation of the fastener tapes by changing their speed relative to the transport speed of the material web is improved by the ventilation with the exhaust gases from the impingement jet ventilation zones, because due to the ventilation results in a stronger frictional contact of the web with the straps.
  • a textile web 7 consists essentially of several consecutive treatment zones 1 to 6, wherein the treatment zones 2 to 6 are formed as impact jet ventilation zones and the treatment zone 1 as a ventilation zone.
  • the textile web 7 is transported by transport means not shown in the expanded state through the treatment zones 1 to 6.
  • nozzle systems 17 are provided, which in the exemplary embodiment shown consist of upper and lower nozzle boxes, which extend over the entire width of the material web, so that the material web is acted upon both from above and from below with a treatment gas.
  • the treatment gas consists of fresh air 8, which is supplied to the impact jet ventilation zones via suitable nozzles, and circulating air 9. Furthermore, the treatment gas may also contain the exhaust air 10 of the impact jet ventilation zone following in the transport direction 21 of the fabric.
  • the exhaust air 10 of a treatment zone in the transport direction of the web 7 preceding treatment zone can be derived.
  • the means 11 for discharging the exhaust air are arranged such that the exhaust air is passed through the web 7.
  • the flow through the web can be done by the fan 11, which presses the exhaust air 10 through the web. But it is also conceivable that the exhaust air is drawn through a downstream fan 12 through the web.
  • both fans 11, 12 are provided, wherein the web 7 between the two fans 11, 12 is arranged.
  • the exhaust air 10 is performed in the ventilation zone 1 through the cold, wet web 7 and cooled in this way almost to the cooling limit temperature.
  • the exhaust air of the impact jet ventilation zones 2 and 3 is used for the ventilation.
  • the fresh air is sucked in via a fan 29, heated in the heat recovery 30 by the exhaust air 13 and fed as preheated fresh air 8 via the fresh air pipe of the device.
  • Ventilation zone 1 is expediently provide at least one support band 15 to support the web 7, which should be designed so that it can also be ventilated.
  • Fig. 2 a floor dryer in which the web 7 first passes through a plurality of upper treatment zones 18 and then a plurality of lower treatment zones 19.
  • the web 7 is transported by means of one or more conveyor belts 16 through the upper and lower treatment zones.
  • Each upper and lower treatment zone is in turn designed as a baffle-jet ventilation zone and in turn has a suitable nozzle system 17 in order to inflate the treatment gas onto the material web 7.
  • the nozzle systems are in Fig. 2 for reasons of clarity, only shown schematically in the two last treatment zones 19.
  • Each lower treatment zone 19 is associated with an upper treatment zone 18 arranged above it, wherein fresh air 8 is supplied to the lower treatment zones, which in turn forms the treatment gas together with the circulating air 9 in the lower treatment zone.
  • the exhaust air 10 of the lower treatment zone 19 is supplied to the overlying upper treatment zone 18 as a treatment gas.
  • suitable means 20 such as exhaust ducts, the exhaust air 10 is collected from each of the upper treatment zones 18 and fed to an upstream in the transport direction 21 of the web 7 aeration zone 1.
  • the means for discharging the exhaust air 10 may in particular include a fan 11 which is arranged so that it presses the exhaust air 10 in the ventilation zone 1 through the web 7.
  • a downstream fan 12 can in turn assist the ventilation of the web by pulling the exhaust air through the web.
  • At least one carrier tape 15 is provided for the transport and the support of the web 7 in the region of the ventilation zone 1.
  • the drawn through the web 7 exhaust air is saturated with moisture and cooled almost to the cooling limit temperature. This exhaust gas can then be discharged to the outside, unless there is still another heat recovery is provided.
  • the fresh air 8 of the two embodiments described above is formed in particular by ambient air, which is preheated by a heat recovery or a heating system. Characterized in that the exhaust air 10 is guided in countercurrent to the transport direction 21 of the web through at least two treatment zones, the exhaust air can concentrate with moisture or preparation, to then be passed through the web at the beginning of the process in the ventilation zone. This exhaust air guidance results in a particularly uniform heating of the goods and a very efficient utilization of the heat energy of the exhaust air. The web 7 can thereby be warmed up faster and more uniformly, so that drying and / or fixing operations can be carried out more quickly.
  • the conveyor belt 15 serves to ensure that the web receives sufficient support in the area of the aeration zone 1 when it is loaded with the exhaust air when flowing through.
  • the edges of the web 7 are fixed during transport through the ventilation zone 1.
  • the web 7 is also in frictional contact with the two straps 15a, 15b.
  • the web 7 on an anticipatory arcuate delay 25 which can be remedied by the fact that the fastener tapes 15a, 15b are driven either slower than the transport speed of the web 7 or even against the transport direction 21. This is shown by the arrows 27, 28. Due to the frictional contact of the fastener tapes 15a, 15b with the web 7 of the arcuate delay is getting smaller, until the complete correction of the delay has occurred. During frictional contact with the straps 15a. 15b, the edges of the web 7 are fixed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

An initial treatment zone (1) in the direction (21) of web transport, is designed to force air through the textile web (7). Equipment removing used air from the air jet zones, is connected to this initial treatment zone, such that outgoing air is directed through the web. A fan (12) induces the outgoing air and is located near the initial zone, in order to draw it through the web, or force it through under pressure. First and second fans (11, 12) are used, the initial treatment zone being located between them. An independent claim is included for the corresponding method.

Description

Die Erfindung betrifft eine Vorrichtung sowie ein Verfahren zur Wärmebehandlung von textilen Warenbahnen mit mehreren, aufeinander folgenden Behandlungszonen, die als Prallstrahlbelüftungszonen ausgebildet sind.The invention relates to a device and a method for heat treatment of textile webs with a plurality of successive treatment zones, which are designed as impact jet ventilation zones.

In der DE-U-201 16 279 wird eine Vorrichtung zur Behandlung von textilen Warenbahnen beschrieben, die im Wesentlichen aus einem Gehäuse, Einrichtungen zum Transport der Warenbahn im ausgebreiteten Zustand durch das Gehäuse sowie einem Düsensystem zum Aufblasen von Behandlungsgas auf die Warenbahn besteht. Das Düsensystem weist üblicherweise obere und untere Düsenkästen auf, die sich über die gesamte Breite der Warenbahn erstrecken, so dass die Warenbahn sowohl von oben als auch von unten mit einem Behandlungsgas beaufschlagt werden kann.In the DE-U-201 16 279 a device for the treatment of textile webs is described, which consists essentially of a housing, means for transporting the web in the extended state through the housing and a nozzle system for inflating treatment gas on the web. The nozzle system usually has upper and lower nozzle boxes, which extend over the entire width of the web, so that the web can be acted upon both from above and from below with a treatment gas.

Das Behandlungsgas, beispielsweise erwärmte Luft, wird zirkuliert, d.h. immer wieder erhitzt, auf die Warenbahn aufgebracht und rückgeführt. An ein oder mehreren Stellen der Vorrichtung wird ein Teil des Behandlungsgases über Abluftstutzen abgeleitet und durch über Frischluftstutzen zugeführte Frischluft ersetzt.The treatment gas, for example heated air, is circulated, i. repeatedly heated, applied to the web and returned. At one or more points of the device, a part of the treatment gas is discharged via exhaust nozzles and replaced by fresh air via fresh air supplied fresh air.

Weiterhin ist es bekannt, das Abgas einem Wärmerückgewinnungssystem zu zuführen, um Energie bei der Vorrichtung zur Wärmebehandlung von textilen Warenbahnen einzusparen.Furthermore, it is known to supply the exhaust gas to a heat recovery system in order to save energy in the apparatus for heat treatment of textile webs.

Aus der EP 1 134 529 A2 ist eine Vorrichtung zur Wärmebehandlung von textilen Warenbahnen bekannt, die mehrere, aufeinander folgende Prallstrahlbelüftungszonen aufweist. Bevor die Warenbahn die einzelnen Behandlungsfelder durchläuft, muss sie in geeigneter Weise zugeführt werden. Dafür sind üblicherweise Mittel zum Abstützen der Warenbahn vorgesehen, die beispielsweise durch Bleche oder Transportbänder gebildet werden. In der EP 1 134 529 A2 ist hierfür ein Traglufttisch zum Abstützen der Warenbahn durch gezielte Luftbeaufschlagung vorgesehen. Der Traglufttisch weist daher auf seiner Oberseite Düsen auf, die derart ausgerichtet sind, dass die Warenbahn quer zur Transportrichtung ein Wellenprofil einnimmt. Auf diese Weise kann gerade am Gehäuseanfang, wenn die feuchte Warenbahn naturgemäß noch sehr weit durchhängt, eine wirkungsvolle Unterstützung erfolgen, ohne dass dabei die Warenbahn, beispielsweise durch sogenannte "Bügeleffekte", beeinträchtigt wird.From the EP 1 134 529 A2 a device for heat treatment of textile webs is known, which has a plurality of successive impact jet ventilation zones. Before the web passes through the individual treatment fields, it must be supplied in a suitable manner. For this purpose, usually means for supporting the web are provided, which are formed for example by sheets or conveyor belts. In the EP 1 134 529 A2 For this purpose, a carrying air table for supporting the web by targeted Luftbeaufschlagung intended. The support air table therefore has on its upper side nozzles which are aligned such that the web transversely to the transport direction assumes a wave profile. In this way, just at the beginning of the housing, when the moist web of course still hangs very far, an effective support done without the web, for example, by so-called "ironing effects" is impaired.

GB 2 043 860 A , DE 604 269 C , DE 2 302 107 und US 4 270 283 A offenbaren Trockungseinrichtungen für textile Warenbahnen mit einer Vielzahl von Durchlüftungszonen. GB 2 043 860 A . DE 604 269 C . DE 2 302 107 and US 4 270 283 A disclose drying devices for textile webs with a large number of ventilation zones.

Der Erfindung liegt nun die Aufgabe zugrunde, die Vorrichtung bzw. das Verfahren zur Wärmebehandlung von textilen Warenbahnen dahingehend zu verbessern, dass eine weitere Energieeinsparung und gleichzeitig eine Steigerung der Effizienz der Wärmebehandlung ermöglicht wird.The invention is based on the object to improve the device or the method for heat treatment of textile webs to the effect that a further energy saving and at the same time an increase in the efficiency of the heat treatment is possible.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale der Ansprüche 1 und 8 gelöst.According to the invention, this object is solved by the features of claims 1 and 8.

Die erfindungsgemäße Vorrichtung zur Wärmebehandlung von textilen Warenbahnen besteht im Wesentlichen aus mehreren aufeinander folgenden Behandlungszonen, die als Prallstrahlbelüftungszonen ausgebildet sind sowie Mitteln zum Ableiten der Abluft der Prallstrahlbelüftungszonen. Weiterhin ist eine in Transportrichtung der Warenbahn vorgeschaltete Behandlungszone vorgesehen, die als Durchlüftungszone ausgebildet ist, wobei die Warenbahn in der Durchlüftungszone mit wenigstens einem in Transportrichtung der Warenbahn ausgerichteten Tragband in Kontakt steht und wobei die Mittel zum Ableiten der Abluft der Prallstrahlbelüftungszonen an die Durchlüftungszone derart angeschlossen sind, dass die Abluft durch die Warenbahn geleitet wird und einen Ventilator umfassen, der im Bereich der Durchlüftungszone derart angeordnet ist, dass er die Abluft durch die Warenbahn zieht oder die Abluft durch die Warenbahn drückt. Beim erfindungsgemäßen Verfahren zur Wärmebehandlung von textilen Warenbahnen wird die Warenbahn in mehreren aufeinander folgenden Behandlungszonen einer Prallstrahlbelüftung ausgesetzt. In einer in Transportrichtung der Warenbahn vorgeschalteten Durchlüftungszone steht die Warenbahn mit einem in Transportrichtung der Warenbahn ausgerichteten Tragband in Kontakt und wird von der Abluft der Prallstrahlbelüftung durchlüftet, indem ein im Bereich der Durchlüftungszone angeordneter Ventilator die Abluft durch die Warenbahn zieht oder die Abluft durch die Warenbahn drückt.The inventive device for heat treatment of textile webs consists essentially of several successive treatment zones, which are designed as impact jet ventilation zones and means for deriving the exhaust air of the impact jet ventilation zones. Furthermore, an upstream in the transport direction of the web treatment zone is provided, which is designed as a ventilation zone, wherein the web is in the ventilation zone with at least one aligned in the transport direction of the web lanyard in contact and wherein the means for discharging the exhaust air of the baffle vent zones connected to the ventilation zone such are that the exhaust air is passed through the web and include a fan which is arranged in the region of the aeration zone such that it pulls the exhaust air through the web or pushes the exhaust air through the web. In the method according to the invention for the heat treatment of textile webs, the web is exposed in a plurality of successive treatment zones of a collision jet ventilation. In an upstream in the transport direction of the web aeration zone, the web is in contact with a direction of transport of the web carrier tape and is ventilated by the exhaust air of the impingement jet ventilation by a arranged in the ventilation zone fan pulls the exhaust air through the web or the exhaust air through the web suppressed.

In den Prallstrahlbelüftungszonen wird das Behandlungsgas, beispielsweise erwärmte Luft, auf die Warenbahn geblasen, um diese beispielsweise zu trocknen. Das Behandlungsgas nimmt dabei die Feuchtigkeit auf. Indem die Abgase in der vorgeschalteten Durchlüftungszone durch die Warenbahn geleitet werden, kann sich die Abluft bis auf die Kühlgrenztemperatur weiter abkühlen, wobei Energie der Warenbahn zugeführt wird. Dies bedeutet eine Effizienzsteigerung der Trocknungsleistung und eine Energieeinsparung.In the impingement jet ventilation zones, the treatment gas, for example heated air, is blown onto the web in order to dry it, for example. The treatment gas absorbs the moisture. By the exhaust gases are passed through the web in the upstream aeration zone, the exhaust air can continue to cool down to the cooling limit temperature, wherein energy is supplied to the web. This means an increase in efficiency of the drying performance and an energy saving.

Gemäß einer bevorzugten Anordnung sind zwei Ventilatoren vorgesehen, so dass die Durchlüftungszone zwischen den beiden Ventilatoren angeordnet ist und die Abluft durch die Warenbahn gezogen oder gedrückt werden kann.According to a preferred arrangement, two fans are provided, so that the ventilation zone is arranged between the two fans and the exhaust air can be pulled or pushed through the web.

Die Prallstrahlbelüftungszonen können so ausgebildet sein, dass die Abluft wenigstens einer in Transportrichtung der Warenbahn nachgeordneten Prallstrahlbelüftungszone in eine vorhergehende Prallstrahlbelüftungszone eingeleitet wird. Dadurch wird die Abluft entgegen der Transportsrichtung der Warenbahn durch die Prallstrahlbelüftungszonen geführt, wodurch sich das Behandlungsgas/Abgas mit Feuchtigkeit oder Präparation aufkonzentrieren kann.The impact jet ventilation zones can be designed so that the exhaust air is introduced into at least one downstream in the transport direction of the web impact air ventilation zone in a previous impingement jet ventilation zone. As a result, the exhaust air is guided counter to the transport direction of the web through the impingement jet ventilation zones, whereby the treatment gas / exhaust gas can concentrate with moisture or preparation.

Gemäß einer weiteren Ausgestaltung steht die Warenbahn in der Durchlüftungszone mit wenigstens zwei nebeneinander angeordneten und in Transportrichtung derAccording to a further embodiment, the web is in the ventilation zone with at least two juxtaposed and in the transport direction of the

Warenbahn ausgerichteten Tragbändern in Reibkontakt, wobei jedem Tragband Antriebsmittel zugeordnet sind, um die Tragbänder zum Entfernen von nichtlinearen Verzügen gegenüber der Transportgeschwindigkeit der Materialbahn zu beschleunigen und zu verzögern. Bei dieser Ausgestaltung dienen die Tragbänder als Auflagefläche für die Warenbahn während der Durchlüftung und ermöglichen gleichzeitig die Korrektur von Verzügen. Für die Wirkungsweise der beiden Tragbänder zur Korrektur von Verzügen wird hiermit auf die DE-A-10 2006 003 384 verwiesen.Web-oriented carrier tapes in frictional contact, each carrier tape drive means are assigned to accelerate and retard the tapes for removing non-linear distortion relative to the transport speed of the web. In this embodiment, the straps serve as a support surface for the web during the ventilation and at the same time allow the correction of distortion. For the mode of action of the two straps for correcting distortion, reference is hereby made to DE-A-10 2006 003 384.

Die Wirkungsweise der Tragbänder durch Veränderung ihrer Geschwindigkeit gegenüber der Transportgeschwindigkeit der Materialbahn wird durch die Durchlüftung mit den Abgasen aus den Prallstrahlbelüftungszonen verbessert, weil sich aufgrund der Durchlüftung ein stärkerer Reibkontakt der Warenbahn mit den Tragbändern ergibt.The operation of the fastener tapes by changing their speed relative to the transport speed of the material web is improved by the ventilation with the exhaust gases from the impingement jet ventilation zones, because due to the ventilation results in a stronger frictional contact of the web with the straps.

Weitere Vorteile und Ausgestaltungen der Erfindung werden im Folgenden anhand der Beschreibung und der Zeichnung näher erläutert.Further advantages and embodiments of the invention will be explained in more detail below with reference to the description and the drawing.

In der Zeichnung zeigen

Fig. 1
eine schematische Darstellung einer Vorrichtung zur Wärmebehandlung einer textilen Warenbahn gemäß einem ersten Ausführungsbeispiel,
Fig. 2
eine schematische Darstellung einer Vorrichtung zur Wärmebehandlung einer textilen Warenbahn gemäß einem zweiten Ausführungsbeispiel und
Fig. 3
eine schematische Draufsicht im Bereich der Durchlüftungszone.
In the drawing show
Fig. 1
a schematic representation of an apparatus for heat treatment of a textile web according to a first embodiment,
Fig. 2
a schematic representation of an apparatus for heat treatment of a textile web according to a second embodiment and
Fig. 3
a schematic plan view in the region of the ventilation zone.

Die in Fig. 1 dargestellte Vorrichtung zur Wärmebehandlung, beispielsweise zum Trocknen und oder Fixieren einer textilen Warenbahn 7 besteht im Wesentlichen aus mehreren aufeinander folgenden Behandlungszonen 1 bis 6, wobei die Behandlungszonen 2 bis 6 als Prallstrahlbelüftungszonen und die Behandlungszone 1 als Durchlüftungszone ausgebildet sind. Die textile Warenbahn 7 wird durch nicht näher dargestellte Transportmittel im ausgebreiteten Zustand durch die Behandlungszonen 1 bis 6 transportiert. In den Prallstrahlbelüftungszonen sind Düsensysteme 17 vorgesehen, die im dargestellten Ausführungsbeispiel aus oberen und unteren Düsenkästen bestehen, die sich über die gesamte Breite der Warenbahn erstrecken, so dass die Warenbahn sowohl von oben als auch von unten mit einem Behandlungsgas beaufschlagt wird.In the Fig. 1 illustrated device for heat treatment, for example, for drying and or fixing a textile web 7 consists essentially of several consecutive treatment zones 1 to 6, wherein the treatment zones 2 to 6 are formed as impact jet ventilation zones and the treatment zone 1 as a ventilation zone. The textile web 7 is transported by transport means not shown in the expanded state through the treatment zones 1 to 6. In the impingement jet ventilation zones, nozzle systems 17 are provided, which in the exemplary embodiment shown consist of upper and lower nozzle boxes, which extend over the entire width of the material web, so that the material web is acted upon both from above and from below with a treatment gas.

Das Behandlungsgas besteht aus Frischluft 8, die über geeignete Stutzen den Prallstrahlbelüftungszonen zugeführt wird, und Umluft 9. Weiterhin kann das Behandlungsgas auch die Abluft 10 der in Transportrichtung 21 der Warenbahn nachfolgenden Prallstrahlbelüftungszone enthalten.The treatment gas consists of fresh air 8, which is supplied to the impact jet ventilation zones via suitable nozzles, and circulating air 9. Furthermore, the treatment gas may also contain the exhaust air 10 of the impact jet ventilation zone following in the transport direction 21 of the fabric.

Über geeignete Mittel 11, die beispielsweise durch Ventilatoren gebildet werden, kann die Abluft 10 einer Behandlungszone in die in Transportrichtung der Warenbahn 7 vorgehende Behandlungszone abgeleitet werden.By suitable means 11, which are formed for example by fans, the exhaust air 10 of a treatment zone in the transport direction of the web 7 preceding treatment zone can be derived.

Dies hat den Effekt, dass das Behandlungsgas nun von Behandlungszone zu Behandlungszone und damit von hinten nach vorne bis zur Durchlüftungszone 1 geführt wird. Dabei sättigt sich das Behandlungsgas mit Feuchtigkeit auf.This has the effect that the treatment gas is now passed from treatment zone to treatment zone and thus from back to front to the aeration zone 1. The treatment gas saturates with moisture.

In der Durchlüftungszone 1 sind die Mittel 11 zum Ableiten der Abluft derart angeordnet, dass die Abluft durch die Warenbahn 7 geleitet wird. Die Durchströmung der Warenbahn kann durch den Ventilator 11 erfolgen, der die Abluft 10 durch die Warenbahn drückt. Es ist aber auch denkbar, dass die Abluft durch einen nachgeschalteten Ventilator 12 durch die Warenbahn gezogen wird. In einer bevorzugten Ausgestaltung sind beide Ventilatoren 11, 12 vorgesehen, wobei die Warenbahn 7 zwischen den beiden Ventilatoren 11, 12 angeordnet ist.In the ventilation zone 1, the means 11 for discharging the exhaust air are arranged such that the exhaust air is passed through the web 7. The flow through the web can be done by the fan 11, which presses the exhaust air 10 through the web. But it is also conceivable that the exhaust air is drawn through a downstream fan 12 through the web. In a preferred embodiment, both fans 11, 12 are provided, wherein the web 7 between the two fans 11, 12 is arranged.

Die Abluft 10 wird in der Durchlüftungszone 1 durch die kalte, nasse Warenbahn 7 durchgeführt und auf diese Weise fast auf die Kühlgrenztemperatur abgekühlt.The exhaust air 10 is performed in the ventilation zone 1 through the cold, wet web 7 and cooled in this way almost to the cooling limit temperature.

Je nach Anzahl der Prallstrahlbelüftungszonen kann es zweckmäßig sein, nicht die gesamte Abluft aus allen Prallstrahlbelüftungszonen für die Durchlüftung der Warenbahn zu verwenden. Im dargestellten Ausführungsbeispiel wird die Abluft der Prallstrahlbelüftungszonen 2 und 3 für die Durchlüftung verwendet. Die über die Prallstrahlbelüftungszonen 6, 5 und 4 mit Feuchtigkeit bzw. mit Präparationen vom Fixierprozess aufkonzentrierte Abluft 13 wird etwa in der Mitte der gesamten Vorrichtung über einen Ventilator 14 ausgeschleust und ggf. einer Wärmerückgewinnungseinrichtung 30 zugeführt. Die Frischluft wird über einen Ventilator 29 angesaugt, in der Wärmerückgewinnung 30 durch die Abluft 13 erwärmt und als vorgewärmte Frischluft 8 über die Frischluftstutzen der Vorrichtung zugeführt.Depending on the number of impact jet ventilation zones, it may be expedient not to use the entire exhaust air from all impact jet ventilation zones for aeration of the material web. In the illustrated embodiment, the exhaust air of the impact jet ventilation zones 2 and 3 is used for the ventilation. The exhaust air 13, which is concentrated via the impact jet ventilation zones 6, 5 and 4 with moisture or with preparations from the fixing process, is discharged via a fan 14 approximately in the middle of the entire apparatus and optionally fed to a heat recovery device 30. The fresh air is sucked in via a fan 29, heated in the heat recovery 30 by the exhaust air 13 and fed as preheated fresh air 8 via the fresh air pipe of the device.

In der Durchlüftungszone 1 ist zweckmäßigerweise wenigstens ein Tragband 15 zur Unterstützung der Warenbahn 7 vorzusehen, welches so ausgestaltet sein sollte, dass es ebenfalls durchlüftet werden kann.In the ventilation zone 1 is expediently provide at least one support band 15 to support the web 7, which should be designed so that it can also be ventilated.

In Fig. 2 ist ein Etagentrockner dargestellt, bei dem die Warenbahn 7 zunächst mehrere obere Behandlungszonen 18 und anschließend mehrere untere Behandlungszonen 19 durchläuft. Die Warenbahn 7 wird dabei mit Hilfe von ein oder mehreren Transportbändern 16 durch die oberen und unteren Behandlungszonen transportiert. Jede obere und untere Behandlungszone ist wiederum als Prallstrahlbelüftungszone ausgebildet und weist wiederum ein geeignetes Düsensystem 17 auf, um das Behandlungsgas auf die Warenbahn 7 aufzublasen. Die Düsensysteme sind in Fig. 2 aus Gründen der Übersichtlichkeit lediglich in den beiden letzten Behandlungszonen 19 schematisch dargestellt.In Fig. 2 is shown a floor dryer in which the web 7 first passes through a plurality of upper treatment zones 18 and then a plurality of lower treatment zones 19. The web 7 is transported by means of one or more conveyor belts 16 through the upper and lower treatment zones. Each upper and lower treatment zone is in turn designed as a baffle-jet ventilation zone and in turn has a suitable nozzle system 17 in order to inflate the treatment gas onto the material web 7. The nozzle systems are in Fig. 2 for reasons of clarity, only shown schematically in the two last treatment zones 19.

Jeder unteren Behandlungszone 19 ist eine darüber angeordnete obere Behandlungszone 18 zugeordnet, wobei den unteren Behandlungszonen Frischluft 8 zugeführt wird, die wiederum zusammen mit der Umluft 9 in der unteren Behandlungszone das Behandlungsgas bildet. Die Abluft 10 der unteren Behandlungszone 19 wird der darüber angeordneten oberen Behandlungszone 18 als Behandlungsgas zugeführt. Über geeignete Mittel 20, wie Abluftleitungen, wird die Abluft 10 aus jeder der oberen Behandlungszonen 18 gesammelt und einer in Transportrichtung 21 der Warenbahn 7 vorgeschalteten Durchlüftungszone 1 zugeführt. Die Mittel zum Ableiten der Abluft 10 können dabei insbesondere noch einen Ventilator 11 umfassen, der so angeordnet ist, dass er die Abluft 10 in der Durchlüftungszone 1 durch die Warenbahn 7 drückt. Ein nachgeschalteter Ventilator 12 kann wiederum die Durchlüftung der Warenbahn dadurch unterstützen, dass er die Abluft durch die Warenbahn zieht.Each lower treatment zone 19 is associated with an upper treatment zone 18 arranged above it, wherein fresh air 8 is supplied to the lower treatment zones, which in turn forms the treatment gas together with the circulating air 9 in the lower treatment zone. The exhaust air 10 of the lower treatment zone 19 is supplied to the overlying upper treatment zone 18 as a treatment gas. By suitable means 20, such as exhaust ducts, the exhaust air 10 is collected from each of the upper treatment zones 18 and fed to an upstream in the transport direction 21 of the web 7 aeration zone 1. The means for discharging the exhaust air 10 may in particular include a fan 11 which is arranged so that it presses the exhaust air 10 in the ventilation zone 1 through the web 7. A downstream fan 12 can in turn assist the ventilation of the web by pulling the exhaust air through the web.

Auch bei diesem Ausführungsbeispiel ist im Bereich der Durchlüftungszone 1 wenigstens ein Tragband 15 für den Transport und die Unterstützung der Warenbahn 7 vorgesehen.Also in this embodiment, at least one carrier tape 15 is provided for the transport and the support of the web 7 in the region of the ventilation zone 1.

Die durch die Warenbahn 7 gezogene Abluft ist mit Feuchtigkeit gesättigt und fast auf die Kühlgrenztemperatur abgekühlt. Dieses Abgas kann dann ins Freie abgeleitet werden, sofern nicht noch eine weitere Wärmerückgewinnung vorgesehen ist.The drawn through the web 7 exhaust air is saturated with moisture and cooled almost to the cooling limit temperature. This exhaust gas can then be discharged to the outside, unless there is still another heat recovery is provided.

Die Frischluft 8 der beiden oben beschriebenen Ausführungsbeispiele wird insbesondere durch Umgebungsluft gebildet, die durch eine Wärmerückgewinnung oder ein Heizsystem vorgewärmt wird. Dadurch, dass die Abluft 10 im Gegenstrom zur Transportrichtung 21 der Warenbahn durch wenigstens zwei Behandlungszonen geführt wird, kann sich die Abluft mit Feuchtigkeit oder Präparation aufkonzentrieren, um dann am Anfang des Prozesses in der Durchlüftungszone durch die Warenbahn geleitet zu werden. Durch diese Abluftführung ergibt sich eine besonders gleichmäßige Erwärmung der Ware und eine sehr effiziente Ausnutzung der Wärmeenergie der Abluft. Die Warenbahn 7 kann dadurch schneller und gleichmäßiger aufgewärmt werden, so dass Trocknungs- und/oder Fixiervorgänge schneller durchgeführt werden können.The fresh air 8 of the two embodiments described above is formed in particular by ambient air, which is preheated by a heat recovery or a heating system. Characterized in that the exhaust air 10 is guided in countercurrent to the transport direction 21 of the web through at least two treatment zones, the exhaust air can concentrate with moisture or preparation, to then be passed through the web at the beginning of the process in the ventilation zone. This exhaust air guidance results in a particularly uniform heating of the goods and a very efficient utilization of the heat energy of the exhaust air. The web 7 can thereby be warmed up faster and more uniformly, so that drying and / or fixing operations can be carried out more quickly.

Im Folgenden wird nun anhand von Fig. 3 und unter Bezugnahme auf die DE-A-10 2006 003 384 eine weitere Ausgestaltungsmöglichkeit der oben beschriebenen Vorrichtungen zur Wärmebehandlung von textilen Warenbahnen beschrieben.The following will now be based on Fig. 3 and with reference to the DE-A-10 2006 003 384 described a further embodiment of the above-described devices for heat treatment of textile webs.

Wie bereits oben erläutert worden ist, dient das Transportband 15 dazu, dass die Warenbahn eine ausreichende Unterstützung im Bereich der Durchlüftungszone 1 erhält, wenn sie beim Durchströmen mit der Abluft belastet wird.As has already been explained above, the conveyor belt 15 serves to ensure that the web receives sufficient support in the area of the aeration zone 1 when it is loaded with the exhaust air when flowing through.

Verwendet man im Bereich der Durchlüftungszone wenigstens zwei nebeneinander angeordnete Tragbänder 15a, 15b, die in Transportrichtung 21 der Warenbahn 7 ausgerichtet sind und mit der Warenbahn in Reibkontakt stehen, besteht die Möglichkeit zum Entfernen von nichtlinearen Verzügen, indem jedem Tragband ein Antriebsmittel 22a, 22b zugeordnet wird, um die Tragbänder 15a, 15b gegenüber der Transportgeschwindigkeit der Warenbahn zu beschleunigen oder zu verzögern.If at least two adjacently arranged carrier tapes 15a, 15b, which are aligned in the transport direction 21 of the web 7 and are in frictional contact with the web, it is possible to remove nonlinear distortions by assigning a drive means 22a, 22b to each carrier tape is to accelerate or retard the fastener tapes 15a, 15b relative to the transport speed of the web.

Verzüge textiler Materialbahnen während der Fertigung verändern die Struktur von Textilien, wodurch der Gebrauchswert der Ware vermindert und die Weiterverarbeitung gestört wird. Richtsysteme für textile Warenbahnen, wie Fadenund/oder Maschenrichten gehören zum Stand der Technik. Derartige Systeme können Verzüge der Materialbahnen über optoelektronische Messungen ermitteln und dann über ein oder mehrere Richtwalzen beseitigen.Distortions of textile material webs during production change the structure of textiles, whereby the use value of the goods is reduced and the further processing is disturbed. Straightening systems for textile material webs, such as thread and / or stitching are state of the art. Such systems can detect warpage of the webs via opto-electronic measurements and then eliminate it via one or more straightening rollers.

Man unterscheidet prinzipiell zwischen linearen und nichtlinearen Verzügen der Materialbahn. Zum Entfernen der erfassten linearen Verzüge der Warenbahnen werden üblicherweise Schrägrichtwalzen eingesetzt. Bei dem in Fig. 3 dargestellten Ausführungsbeispiel weist die von unten nach oben laufende Warenbahn 7 anfangs einen linearen (24) und einen nichtlinearen (25) Verzug auf. Das Entfernen des linearen Verzugs 24 erfolgt mit wenigstens einer Schrägrichtwalze 23. Der nichtlineare Verzug 25, der in Fig. 3 durch einen vorauseilenden Bogen gebildet wird, lässt sich jedoch hierdurch nicht korrigieren.In principle, a distinction is made between linear and nonlinear distortions of the material web. Schräggrichtwalzen are usually used to remove the detected linear distortions of the webs. At the in Fig. 3 illustrated embodiment, from bottom to top running web 7 initially has a linear (24) and a nonlinear (25) delay. The removal of the linear distortion 24 takes place with at least one oblique sighting roller 23. The nonlinear distortion 25, which is shown in FIG Fig. 3 is formed by a leading arc, but can not be corrected thereby.

Über geeignete Transportmittel 26 werden die Ränder der Warenbahn 7 beim Transport durch die Durchlüftungszone 1 fixiert. In der Durchlüftungszone 1 steht die Warenbahn 7 ferner in Reibkontakt mit den beiden Tragbändern 15a, 15b.By suitable transport means 26, the edges of the web 7 are fixed during transport through the ventilation zone 1. In the aeration zone 1, the web 7 is also in frictional contact with the two straps 15a, 15b.

Im dargestellten Ausführungsbeispiel weist die Warenbahn 7 einen vorauseilenden bogenförmigen Verzug 25 auf, der dadurch behoben werden kann, dass die Tragbänder 15a, 15b entweder langsamer als die Transportgeschwindigkeit der Warenbahn 7 oder sogar entgegen der Transportrichtung 21 angetrieben werden. Dies ist durch die Pfeile 27, 28 dargestellt. Durch den Reibkontakt der Tragbänder 15a, 15b mit der Warenbahn 7 wird der bogenförmige Verzug immer kleiner, bis die vollständige Korrektur des Verzuges erfolgt ist. Während des Reibkontaktes mit den Tragbändern 15a. 15b sind die Ränder der Warenbahn 7 fixiert.In the illustrated embodiment, the web 7 on an anticipatory arcuate delay 25, which can be remedied by the fact that the fastener tapes 15a, 15b are driven either slower than the transport speed of the web 7 or even against the transport direction 21. This is shown by the arrows 27, 28. Due to the frictional contact of the fastener tapes 15a, 15b with the web 7 of the arcuate delay is getting smaller, until the complete correction of the delay has occurred. During frictional contact with the straps 15a. 15b, the edges of the web 7 are fixed.

Durch die Anordnung der Tragbänder in der Durchlüftungszone 1 wird die Warenbahn 7 gleichzeitig mit der Abluft 10 beaufschlagt, wodurch sich der Reibkontakt mit den Tragbändern 15a, 15b erhöht und dadurch eine besonders effiziente Korrektur ermöglicht wird.The arrangement of the fastener tapes in the ventilation zone 1, the web 7 is acted upon simultaneously with the exhaust air 10, whereby the frictional contact with the fastener tapes 15a, 15b increases and thereby a particularly efficient correction is made possible.

Claims (8)

  1. Device for thermally processing textile webs (7) having a plurality of successive processing zones which are constructed as impact stream ventilation zones (2, 3; 18, 19), a processing zone which is arranged upstream in the transport direction (21) of the web (7) and means for directing away the discharge air (10) of the impact stream ventilation zones, characterised in that the processing zone arranged upstream is constructed as a ventilation zone (1), the web (7) being in contact in the ventilation zone (1) with at least one carrier strip (15, 15a, 15b) which is orientated in the transport direction of the web and
    the means for redirecting the discharge air of the impact stream ventilation zones comprising a ventilator (12) which is arranged in the region of the ventilation zone (1) in such a manner that it draws the discharge air through the web (7) or urges the discharge air through the web (7).
  2. Device according to claim 1, characterised in that the means for redirecting the discharge air of the impact stream ventilation zones comprise a first ventilator (11) and a second ventilator (12), the ventilation zone (1) being arranged between the two ventilators.
  3. Device according to claim 1, characterised in that the impact stream ventilation zones (2, 3; 18, 19) are constructed in such a manner that the discharge air (10) of at least one impact stream ventilation zone arranged downstream in the transport direction of the web is directed into a preceding impact stream ventilation zone.
  4. Device according to claim 1, characterised in that the impact stream ventilation zones (2, 3) are constructed in such a manner that the discharge air (10) is guided through the impact stream ventilation zones counter to the transport direction of the web.
  5. Device according to claim 1, characterised in that there are provided in the impact stream ventilation zones (2, 3, 19) means for supplying fresh air (8) which, together with the discharge air (10) of an impact stream ventilation zone downstream in the transport direction (21) of the web (7), is guided counter to the transport direction of the web through the impact stream ventilation zones upstream in the transport direction of the web.
  6. Device according to claim 1, characterised in that the device is a rack dryer.
  7. Device according to claim 1, characterised in that the web (7) is in frictional contact in the ventilation zone (1) with at least two carrier strips (15a, 15b) which are arranged one beside the other and which are orientated in the transport direction (21) of the web (7), driving means (22a, 22b) being associated with each carrier strip in order to accelerate or slow the carrier strips relative to the transport speed of the web in order to remove non-linear distortions.
  8. Method for thermally processing textile webs, the web being subjected to an impact stream ventilation in a plurality of successive processing zones (2, 3; 18, 19) and the resultant discharge air being directed away, characterised in that the web (7) is in contact with a carrier strip (15, 15a, 15b) which is orientated in the transport direction of the web in a ventilation zone (1) upstream of the web in the transport direction (21) and is ventilated by the discharge air (10) of the impact stream ventilation,
    in that a ventilator (12) arranged in the region of the ventilation zone (1) draws the discharge air through the web (7) or urges the discharge air through the web (7).
EP07001415A 2006-03-13 2007-01-23 Apparatus for and method of heat treatment of textile webs Active EP1830146B1 (en)

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DE102006011466A DE102006011466A1 (en) 2006-03-13 2006-03-13 Apparatus and method for heat treatment of textile webs

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EP1830146A3 EP1830146A3 (en) 2008-08-06
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DE102010006577A1 (en) 2010-02-02 2011-08-04 Brückner Trockentechnik GmbH & Co. KG, 71229 Apparatus and method for heat treatment of web-shaped webs
DE102012102096A1 (en) 2012-03-13 2013-09-19 Brückner Trockentechnik GmbH & Co. KG Apparatus and method for heat treatment of web-shaped webs
CN111829316A (en) * 2020-08-03 2020-10-27 宣城红妆美人床上用品有限公司 Drying device for textile production

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ATE541173T1 (en) 2012-01-15
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EP1830146A2 (en) 2007-09-05
EP1830146A3 (en) 2008-08-06

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