EP3059539B1 - Dryer and drying method for a web of textile goods - Google Patents

Dryer and drying method for a web of textile goods Download PDF

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Publication number
EP3059539B1
EP3059539B1 EP16000440.4A EP16000440A EP3059539B1 EP 3059539 B1 EP3059539 B1 EP 3059539B1 EP 16000440 A EP16000440 A EP 16000440A EP 3059539 B1 EP3059539 B1 EP 3059539B1
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EP
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Prior art keywords
air
dryer
drying
additional chamber
textile material
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EP16000440.4A
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German (de)
French (fr)
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EP3059539A1 (en
Inventor
Markus Böhn
Stephan Hajdu
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Truetzschler GmbH and Co KG
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Truetzschler 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
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/16—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning perforated in combination with hot air blowing or suction devices, e.g. sieve drum dryers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure

Definitions

  • the invention relates to a dryer for a textile web according to the preamble of claim 1, and a method for drying a textile web.
  • a textile web is fed to the dryer by looping around the drum to a large extent of the circumference and then removed from the dryer chamber again.
  • the fresh air is supplied through this opening, which is heated within the dryer chamber and mixed with the circulating air, so that they can absorb the highest possible proportion of moisture.
  • the mixture of circulating air and fresh air flows through the web, at least partially absorbs the moisture of the web and is discharged through the interior of the drum again. From this volume flow, a partial volume flow is removed as exhaust air.
  • the moist exhaust air is discharged through channels above the drums, which requires a complex and expensive seal due to the rotating drums and is maintenance-intensive.
  • supply lines or channels for fresh air have been subsequently added to the dryer chamber, which can for example be coupled to a heat exchanger for heating the fresh air.
  • a previously described dryer is in the DE 102009016019 A1 disclosed.
  • the air circulation of fresh air takes place at right angles to the withdrawal direction of the moist air, ie perpendicular to the drum axis, whereby the air circulation is disturbed within the dryer chamber.
  • Another disadvantage is due to lack of space, the often expensive conversion, in which the fresh air duct can not be coupled to a heat exchanger. Since the dryers are very dense in a number of different process engineering aggregates that treat the textile web one after the other, there is often a lack of space to retrofit a fresh air duct between the units.
  • the DE 1729499 A1 discloses a screen drum dryer with arranged on the front sides of the screening drums intermediate chambers.
  • Fresh air is supplied to these intermediate chambers and mixed with the drying air. Part of the exhaust air is discharged via the fan room.
  • the intermediate chamber is firmly integrated in the dryer housing and can not be retrofitted with a heat exchanger. It is an object of the invention to provide a dryer for a textile web in which aerodynamically an exhaust and fresh air can be done, in which also optionally a heat exchanger can be installed later.
  • the invention solves the problem by the teaching of claim 1, and 11; Further advantageous features of the invention are characterized by the subclaims.
  • the invention comprises a dryer for a textile web, comprising a dryer space and with a plurality of arranged in the dryer room drums, which are at least partially wrapped by the web, wherein the web of heated drying air is flowed through, which flows through an interior the drums is discharged.
  • the invention is characterized in that the dryer has a separate additional chamber, via the fresh air and exhaust air is discharged, wherein within the additional chamber means for distributing the fresh air and / or means for separating the exhaust air from the fresh air and / or means for segmenting the additional chamber are arranged.
  • the connections for the fresh air and the exhaust air to the dryer so that the air flow for the drying process in the dryer room and within the drum is not disturbed.
  • the drying air relaxes, so that their flow rate reduces as it exits the drum by a multiple.
  • the exhaust air is withdrawn with the least impact on the drying process.
  • the fresh air can be sucked in freely by the negative pressure in the additional chamber and directed into the heating and fan room.
  • the fresh air and exhaust air flowing in the additional chamber will be separated from each other by means of segmentation.
  • the additional chamber can be segmented analogously to the number of drums.
  • the individual segments can be partitioned off from one another by walls so that there is no exchange of air between the segments.
  • a distribution of the exhaust air or the fresh air can be generated in several segments. This can also be done via baffles.
  • the invention provides to arrange the additional chamber between an end face of the dryer and a heating and fan room.
  • the removal of the exhaust air from the drying air in the additional chamber is most optimal, since the drying air has the lowest energy level here.
  • the energy loss through the exhaust air is the lowest.
  • the allowed clearly defined interface the use of heat recovery under optimal conditions. With this, the energy balance can be further improved.
  • the fresh air mixes with the drying air.
  • the inventive method for drying a textile web is characterized by the method steps that drying air is heated and passed into a dryer room in which a web at least partially wraps around at least one arranged within the dryer chamber drum, wherein the heated drying air flows through the web and an interior the drum is discharged, wherein fresh air supplied to a separate additional chamber and exhaust air is discharged through the additional chamber, wherein the distribution of the fresh air can be influenced by means within the additional chamber.
  • the result is a circulation system in which the drying air withdrawn a partial mass flow of exhaust air and a partial mass flow of fresh air is supplied.
  • the exhaust air is discharged at the point from the drying air at which the drying air has the lowest energy level, namely in the additional chamber.
  • a dryer 1 is shown in the form of a row dryer.
  • three drums 3a, 3b, 3c are arranged one behind the other and with their axes 4a, 4b, 4c in a row.
  • a web 5 is guided via an inlet 6 into the dryer room 2 into it. Via a guide roller 7, the web 5 is guided first below the first drum 3a, then above the second drum 3b and then below the third drum 3c.
  • About a guide roller 8 the web 5 through an outlet 9 from the Drier room 2 brought out.
  • the web 5 is flowed through with heated drying air. The drying air absorbs the moisture of the web 5 and is sucked off through the interior of the drums 3a to 3c.
  • an additional chamber 10 is arranged on the dryer chamber 2, into which the channel 12 for the fresh air 11 and the channel 14 for the exhaust air 13 open.
  • the additional chamber 10 is completely separate and constructed separately from the dryer room 2.
  • the dryer room 2 is connected to air ducts above and below the drums 3a - 3c with the heating and fan room 22.
  • the additional chamber 10 is connected via the frontal opening of the drums 3a - 3c with the dryer room 2.
  • FIG. 2 is the dryer 1 from the FIG. 1 equipped with an optional heat recovery.
  • the same parts have the same reference numerals.
  • the heat exchanger 17 is connected simultaneously with the channel 12, so that the fresh air 11, before it flows into the auxiliary chamber 10, has already experienced a temperature increase by the heat exchanger 17. With this optional retrofittable solution, the thermal efficiency of the dryer 1 can be further increased.
  • the fresh air 11 does not flow directly into the dryer 1, but only into the additional chamber 10, in which a further heating takes place by a mixture with the drying air after the flow through the web 5.
  • this mixing of the fresh air with the drying air was carried out before the flow through the web 5, whereby the temperature of the drying air before the web 5 is influenced.
  • the utilization of the temperature difference between exhaust 13 and Fresh air 11 is sufficient to further increase the thermal efficiency of the dryer 1.
  • FIG. 3 shows a side section through a dryer 1.
  • the fans 19a - 19c which suck the moisture-saturated drying air from the drums 3a - 3c, are flanged to the heating and fan room 22 and via terminals 20a - 20c or adapters with the additional chamber 10 connected. Opposite the drums 3a -3c are also connected via connections with the auxiliary chamber 10.
  • the drying air flows from the drums 3a-3c into the auxiliary chamber 10 and from the additional chamber 10 via the ports 20a-20c into the intake cross-section of the respective fan 19a-19c.
  • the exhaust air from the additional chamber 10 via a channel 14 which is arranged on the front side, removed (see FIG. 1 and 2 ).
  • a fan 15 provides the necessary air flow.
  • the supply of fresh air takes place in the region of the drum 3 c via the additional chamber 10, to which the channel 12 is connected at the end face.
  • the drying air relaxes, so that their flow rate at the exit from the drum 3a, 3b, 3c reduced by a multiple. Furthermore, the fresh air 11 can be sucked in freely by the negative pressure in the additional chamber 10 and fed via this to the heating and fan room 22 with drying air.
  • heating elements 21 may be arranged in the form of heat exchangers, one or more gas heaters or electric heaters, which heat the discharged drying air 11 including the fresh air to the drying temperature.
  • FIG. 4 shows a rear view of the dryer 1, in which the heating and fan room 22 has been hidden.
  • the openings of the drums 3a - 3c can be seen, via which the drums 3a - 3c is connected by means of connections with the additional chamber 10.
  • the fresh air 11 is introduced via a channel 12 into the additional chamber 10.
  • Within the additional chamber 10 are dividers 23 arranged in the form of perforated plates, which segment the additional chamber 10, so that the distribution of the fresh air to the individual fans 19a - 19c can be influenced. It is also possible to influence the distribution of the fresh air within the auxiliary chamber 10 via guide plates, not shown, for example, to separate from the exhaust air.
  • the mixture of fresh and drying air flows through the fans 19 a - 19 c in the heating and fan room 22 a.
  • This is a circulation system, which extracts a partial mass flow in the form of exhaust air and a partial mass flow is supplied in the form of fresh air.
  • the heating and fan room 22 is arranged as a separate chamber in the region of the rear end face of the dryer 1, wherein the additional chamber 10 is arranged therebetween.
  • the drives of the fans 19 a, 19 b, 19 c are arranged, are located inside the fan wheels.
  • a fan 19a, 19b, 19c is associated with a drum 3a, 3b, 3c.
  • the fans 19a, 19b, 19c are connected via connections 20a-20b or adapter with the additional chamber 10 and these also via terminals or adapters with the drums 3a, 3b, 3c.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)

Description

Die Erfindung betrifft einen Trockner für eine textile Warenbahn nach dem Oberbegriff von Anspruch 1, sowie ein Verfahren zum Trocknen einer textilen Warenbahn.The invention relates to a dryer for a textile web according to the preamble of claim 1, and a method for drying a textile web.

Zur Trocknung von textilen Warenbahnen sind Trockner bekannt, bei denen in einem Gehäuse eine oder mehrere Trommeln angeordnet sind. Über eine Öffnung in der Trocknerkammer wird eine textile Warenbahn dem Trockner zugeführt, indem sie die Trommel zu einem Großteil des Umfanges umschlingt und dann aus der Trocknerkammer wieder abgeführt wird. Üblicherweise wird über diese Öffnung auch die Frischluft zugeführt, die innerhalb der Trocknerkammer erhitzt und mit der Umluft vermischt wird, damit sie einen möglichst hohen Anteil an Feuchtigkeit aufnehmen kann. Bei der Umschlingung der Trommel strömt das Gemisch aus Umluft und Frischluft durch die Warenbahn, nimmt zumindest teilweise die Feuchtigkeit der Warenbahn auf und wird über den Innenraum der Trommel wieder abgeführt. Aus diesem Volumenstrom wird ein Teilvolumenstrom als Abluft abgeführt. Dabei wird die feuchte Abluft über Kanäle oberhalb der Trommeln abgeführt, was aufgrund der rotierenden Trommeln eine aufwendige und teure Abdichtung erfordert und wartungsintensiv ist. Um den Sogeffekt aus der Umgebung des Trockners zu vermeiden, sind nachträglich an der Trocknerkammer Zuführleitungen bzw. Kanäle für Frischluft angebaut worden, die beispielsweise mit einem Wärmetauscher zur Erwärmung der Frischluft gekoppelt werden können.For drying textile webs dryer are known in which one or more drums are arranged in a housing. Through an opening in the dryer chamber, a textile web is fed to the dryer by looping around the drum to a large extent of the circumference and then removed from the dryer chamber again. Usually, the fresh air is supplied through this opening, which is heated within the dryer chamber and mixed with the circulating air, so that they can absorb the highest possible proportion of moisture. During the winding of the drum, the mixture of circulating air and fresh air flows through the web, at least partially absorbs the moisture of the web and is discharged through the interior of the drum again. From this volume flow, a partial volume flow is removed as exhaust air. The moist exhaust air is discharged through channels above the drums, which requires a complex and expensive seal due to the rotating drums and is maintenance-intensive. In order to avoid the suction effect from the environment of the dryer, supply lines or channels for fresh air have been subsequently added to the dryer chamber, which can for example be coupled to a heat exchanger for heating the fresh air.

Ein zuvor beschriebener Trockner ist in der DE 102009016019 A1 offenbart. Bei den Trocknern dieser Bauart findet die Luftzirkulation der Frischluft rechtwinklig zur Abzugsrichtung der feuchten Luft statt, also rechtwinklig zur Trommelachse, wodurch die Luftzirkulation innerhalb der Trocknerkammer gestört wird. Ein weiterer Nachteil ist aufgrund von fehlenden Platzverhältnissen der oft aufwändige Umbau, bei dem der Frischluftkanal nicht mit einem Wärmetauscher gekoppelt werden kann. Da die Trockner sehr dicht in einer Reihe von verschiedenen verfahrenstechnischen Aggregaten stehen, die nacheinander die textile Warenbahn behandeln, fehlt oft der Platz, einen Kanal für Frischluft nachträglich zwischen den Aggregaten zu installieren.
Die DE 1729499 A1 offenbart einen Siebtrommeltrockner mit an den Stirnseiten der Siebtrommeln angeordneten Zwischenkammern. Diesen Zwischenkammern wird Frischluft zugeführt und mit der Trocknungsluft gemischt. Ein Teil der verbrauchten Abluft wird über den Ventilatorraum abgeführt. Die Zwischenkammer ist im Trocknergehäuse fest integriert und kann nicht mit einem Wärmetauscher nachgerüstet werden.
Es ist Aufgabe der Erfindung einen Trockner für eine textile Warenbahn zu schaffen, bei dem strömungsgünstig eine Abluft- und Frischluftführung erfolgen kann, bei der auch gegebenenfalls nachträglich ein Wärmetauscher installierbar ist.
Die Erfindung löst die gestellte Aufgabe durch die Lehre nach Anspruch 1, und 11; weitere vorteilhafte Ausgestaltungsmerkmale der Erfindung sind durch die Unteransprüche gekennzeichnet.
Gemäß der technischen Lehre nach Anspruch 1 umfasst die Erfindung einen Trockner für eine textile Warenbahn, umfassend einen Trocknerraum und mit mehreren im Trocknerraum angeordneten Trommeln, die von der Warenbahn zumindest teilweise umschlungen werden, wobei die Warenbahn von erwärmter Trocknungsluft durchströmt wird, die über einen Innenraum der Trommeln abgeführt wird.A previously described dryer is in the DE 102009016019 A1 disclosed. In the dryers of this type, the air circulation of fresh air takes place at right angles to the withdrawal direction of the moist air, ie perpendicular to the drum axis, whereby the air circulation is disturbed within the dryer chamber. Another disadvantage is due to lack of space, the often expensive conversion, in which the fresh air duct can not be coupled to a heat exchanger. Since the dryers are very dense in a number of different process engineering aggregates that treat the textile web one after the other, there is often a lack of space to retrofit a fresh air duct between the units.
The DE 1729499 A1 discloses a screen drum dryer with arranged on the front sides of the screening drums intermediate chambers. Fresh air is supplied to these intermediate chambers and mixed with the drying air. Part of the exhaust air is discharged via the fan room. The intermediate chamber is firmly integrated in the dryer housing and can not be retrofitted with a heat exchanger.
It is an object of the invention to provide a dryer for a textile web in which aerodynamically an exhaust and fresh air can be done, in which also optionally a heat exchanger can be installed later.
The invention solves the problem by the teaching of claim 1, and 11; Further advantageous features of the invention are characterized by the subclaims.
According to the technical teaching of claim 1, the invention comprises a dryer for a textile web, comprising a dryer space and with a plurality of arranged in the dryer room drums, which are at least partially wrapped by the web, wherein the web of heated drying air is flowed through, which flows through an interior the drums is discharged.

Die Erfindung ist dadurch gekennzeichnet, dass der Trockner eine separate Zusatzkammer aufweist, über die Frischluft zu- und Abluft abgeführt wird, wobei innerhalb der Zusatzkammer Mittel zum Verteilen der Frischluft und/oder Mittel zum Trennen der Abluft von der Frischluft und/oder Mittel zum Segmentieren der Zusatzkammer angeordnet sind.The invention is characterized in that the dryer has a separate additional chamber, via the fresh air and exhaust air is discharged, wherein within the additional chamber means for distributing the fresh air and / or means for separating the exhaust air from the fresh air and / or means for segmenting the additional chamber are arranged.

Mit den Merkmalen der Erfindung ist es möglich, die Anschlüsse für die Frischluft und die Abluft so an dem Trockner anzuordnen, dass die Luftströmung für den Trocknungsprozess im Trocknerraum und innerhalb der Trommel nicht gestört wird. Durch die Zusatzkammer entspannt sich die Trocknungsluft, so dass sich deren Strömungsgeschwindigkeit beim Austritt aus der Trommel um ein vielfaches reduziert. Aus der Zusatzkammer wird die Abluft mit dem geringsten Einfluss auf den Trocknungsprozess entzogen. Weiterhin kann durch den Unterdruck in der Zusatzkammer die Frischluft frei angesaugt und in den Heizungs- und Ventilatorraum geleitet werden.With the features of the invention, it is possible to arrange the connections for the fresh air and the exhaust air to the dryer so that the air flow for the drying process in the dryer room and within the drum is not disturbed. By the additional chamber, the drying air relaxes, so that their flow rate reduces as it exits the drum by a multiple. From the additional chamber, the exhaust air is withdrawn with the least impact on the drying process. Furthermore, the fresh air can be sucked in freely by the negative pressure in the additional chamber and directed into the heating and fan room.

Die in der Zusatzkammer strömende Frisch- und Abluft wird durch Mittel zur Segmentierung voneinander getrennt werden. Ebenfalls kann die Zusatzkammer analog zur Anzahl der Trommeln segmentiert werden. Die einzelnen Segmente können durch Wände voneinander abgeschottet werden, damit kein Luftaustausch zwischen den Segmenten entsteht. Über eine teilweise durchlässige Segmentierung, beispielsweise in Form von Lochblechen, kann eine Verteilung der Abluft oder der Frischluft auf mehrere Segmente erzeugt werden. Dies kann ebenfalls über Leitbleche erfolgen.The fresh air and exhaust air flowing in the additional chamber will be separated from each other by means of segmentation. Likewise, the additional chamber can be segmented analogously to the number of drums. The individual segments can be partitioned off from one another by walls so that there is no exchange of air between the segments. About a partially transparent segmentation, for example in the form of perforated plates, a distribution of the exhaust air or the fresh air can be generated in several segments. This can also be done via baffles.

In vorteilhafter Ausgestaltung sieht die Erfindung vor, die Zusatzkammer zwischen einer Stirnseite des Trockners und einem Heizungs- und Ventilatorraum anzuordnen. Aus energetischen Gründen ist die Entnahme der Abluft aus der Trocknungsluft in der Zusatzkammer am optimalsten, da hier die Trocknungsluft das niedrigste Energieniveau hat. Somit ist der Energieverlust durch die Abluft am geringsten. Es ergibt sich eine für den Trocknungsprozess strömungsgünstige Lösung, die unabhängig vom Platzangebot zwischen den nacheinander angeordneten Aggregaten angeordnet werden kann. Zusätzlich erlaubt die eindeutig definierte Schnittstelle die Verwendung einer Wärmerückgewinnung unter optimalen Bedingungen. Mit dieser kann die Energiebilanz weiter verbessert werden.
Innerhalb der Zusatzkammer vermischt sich die Frischluft mit der Trocknungsluft. Dadurch, dass innerhalb des Heizungs- und Ventilatorraumes Mittel zum Erwärmen der Frischluft und Trocknungsluft angeordnet sind, hat die erwärmte Trocknungsluft nur einen kurzen Weg bis zum Trocknerraum, auf dem sie nicht abkühlt.
Eine energieeffiziente Verbesserung wird erreicht, in dem die Mittel als Wärmetauscher ausgebildet sind, wobei die Wärmetauscher die Abluft aus der Zusatzkammer nutzen, um die Frischluft und Trocknungsluft zu erwärmen.
Die Anordnung der Ventilatoren an den Heizungs- und Ventilatorraum zur Zirkulation der Trocknungsluft hat den Vorteil, dass der Trockner relativ kompakt gebaut werden kann.
Innerhalb der Zusatzkammer sind Anschlüsse angeordnet, durch die die Trocknungsluft aus dem Trocknerraum bzw. den Trommeln mittels der Ventilatoren abgesaugt werden kann. Die Anschlüsse wiederum können strömungsgünstig ausgebildet sein, um die Strömungsverluste zu minimieren.
Das erfindungsgemäße Verfahren zum Trocknen einer textilen Warenbahn ist gekennzeichnet durch die Verfahrensschritte, dass Trocknungsluft erwärmt und in einen Trocknerraum geleitet wird, in dem eine Warenbahn zumindest teilweise mindestens eine innerhalb des Trocknerraumes angeordnete Trommel umschlingt, wobei die erwärmte Trocknungsluft die Warenbahn durchströmt und über einen Innenraum der Trommel abgeführt wird, wobei Frischluft einer separaten Zusatzkammer zugeführt und Abluft über die Zusatzkammer abgeführt wird, wobei die Verteilung der Frischluft durch Mittel innerhalb der Zusatzkammer beeinflussbar ist.In an advantageous embodiment, the invention provides to arrange the additional chamber between an end face of the dryer and a heating and fan room. For energetic reasons, the removal of the exhaust air from the drying air in the additional chamber is most optimal, since the drying air has the lowest energy level here. Thus, the energy loss through the exhaust air is the lowest. This results in a flow-favorable solution for the drying process, which can be arranged independently of the available space between the successively arranged units. In addition, the allowed clearly defined interface the use of heat recovery under optimal conditions. With this, the energy balance can be further improved.
Within the additional chamber, the fresh air mixes with the drying air. The fact that means for heating the fresh air and drying air are arranged within the heating and fan room, the heated drying air has only a short way to the dryer room on which it does not cool.
An energy-efficient improvement is achieved in which the means are designed as heat exchangers, wherein the heat exchangers use the exhaust air from the additional chamber to heat the fresh air and drying air.
The arrangement of the fans to the heating and fan room to circulate the drying air has the advantage that the dryer can be built relatively compact.
Within the additional chamber connections are arranged, through which the drying air from the dryer room or the drums can be sucked by means of the fans. In turn, the ports may be streamlined to minimize flow losses.
The inventive method for drying a textile web is characterized by the method steps that drying air is heated and passed into a dryer room in which a web at least partially wraps around at least one arranged within the dryer chamber drum, wherein the heated drying air flows through the web and an interior the drum is discharged, wherein fresh air supplied to a separate additional chamber and exhaust air is discharged through the additional chamber, wherein the distribution of the fresh air can be influenced by means within the additional chamber.

Durch die Zusatzkammer werden die Strömungsverhältnisse innerhalb des Trocknerraumes und der Trommel nicht beeinflusst. Die Abluft reduziert beim Eintritt in die Zusatzkammer deutlich die Strömungsgeschwindigkeit, wohingegen die Frischluft aufgrund des Unterdruckes in der Zusatzkammer frei angesaugt und in den Heizungs- und Ventilatorraum geleitet werden kann.Due to the additional chamber, the flow conditions within the dryer space and the drum are not affected. The exhaust air reduces significantly when entering the additional chamber, the flow rate, whereas the fresh air can be sucked in freely due to the negative pressure in the additional chamber and directed into the heating and fan room.

Es entsteht ein Kreislaufsystem, bei der der Trocknungsluft ein Teilmassenstrom von Abluft entzogen und ein Teilmassenstrom von Frischluft zugeführt wird. Dabei wird die Abluft an der Stelle aus der Trocknungsluft abgeführt, an der die Trocknungsluft das geringste Energieniveau besitzt, nämlich in der Zusatzkammer.The result is a circulation system in which the drying air withdrawn a partial mass flow of exhaust air and a partial mass flow of fresh air is supplied. The exhaust air is discharged at the point from the drying air at which the drying air has the lowest energy level, namely in the additional chamber.

Die Erfindung wird nachfolgend anhand eines möglichen schematisch dargestellten Ausführungsbeispieles näher erläutert. Es zeigt:

Figur 1:
eine schematische Darstellung eines Reihentrockners in Vorderansicht;
Figur 2:
eine Darstellung entsprechend Figur 1 mit einer Wärmerückgewinnung;
Figur 3:
der erfindungsgemäße Reihentrockner in seitlicher Schnittdarstellung;
Figur 4:
eine Rückansicht des Reihentrockners mit abgenommenem Heizungs- und Ventilatorraum.
The invention will be explained in more detail with reference to a possible schematically illustrated embodiment. It shows:
FIG. 1:
a schematic representation of a row dryer in front view;
FIG. 2:
a representation accordingly FIG. 1 with heat recovery;
FIG. 3:
the row dryer according to the invention in a lateral sectional view;
FIG. 4:
a rear view of the row dryer with removed heating and fan room.

In Figur 1 ist ein Trockner 1 in Form eines Reihentrockners dargestellt. Innerhalb eines Trocknerraumes 2 sind drei Trommeln 3a, 3b, 3c hintereinander und mit ihren Achsen 4a, 4b, 4c in einer Reihe angeordnet. Eine Warenbahn 5 wird über einen Einlass 6 in den Trocknerraum 2 hinein geführt. Über eine Umlenkwalze 7 wird die Warenbahn 5 erst unterhalb der ersten Trommel 3a, dann oberhalb der zweiten Trommel 3b und anschließend unterhalb der dritten Trommel 3c geführt. Über eine Umlenkwalze 8 wird die Warenbahn 5 durch einen Auslass 9 aus dem Trocknerraum 2 herausgeführt. Während des Durchlaufes durch den Trocknerraum 2 wird die Warenbahn 5 mit erhitzter Trocknungsluft durchströmt. Dabei nimmt die Trocknungsluft die Feuchtigkeit der Warenbahn 5 auf und wird über das Innere der Trommeln 3a bis 3c abgesaugt.In FIG. 1 a dryer 1 is shown in the form of a row dryer. Within a dryer room 2, three drums 3a, 3b, 3c are arranged one behind the other and with their axes 4a, 4b, 4c in a row. A web 5 is guided via an inlet 6 into the dryer room 2 into it. Via a guide roller 7, the web 5 is guided first below the first drum 3a, then above the second drum 3b and then below the third drum 3c. About a guide roller 8, the web 5 through an outlet 9 from the Drier room 2 brought out. During the passage through the dryer room 2, the web 5 is flowed through with heated drying air. The drying air absorbs the moisture of the web 5 and is sucked off through the interior of the drums 3a to 3c.

Erfindungsgemäß ist an den Trocknerraum 2 eine Zusatzkammer 10 angeordnet, in die der Kanal 12 für die Frischluft 11 und der Kanal 14 für die Abluft 13 münden. Die Zusatzkammer 10 ist völlig getrennt und separat vom Trocknerraum 2 aufgebaut. An die Zusatzkammer 10 ist der Heizungs- und Ventilatorraum 22 angeordnet. Der Trocknerraum 2 ist mit Luftkanälen ober- und unterhalb der Trommeln 3a - 3c mit dem Heizungs- und Ventilatorraum 22 verbunden. Die Zusatzkammer 10 ist über die stirnseitige Öffnung der Trommeln 3a - 3c mit dem Trocknerraum 2 verbunden.According to the invention, an additional chamber 10 is arranged on the dryer chamber 2, into which the channel 12 for the fresh air 11 and the channel 14 for the exhaust air 13 open. The additional chamber 10 is completely separate and constructed separately from the dryer room 2. At the additional chamber 10 of the heating and fan room 22 is arranged. The dryer room 2 is connected to air ducts above and below the drums 3a - 3c with the heating and fan room 22. The additional chamber 10 is connected via the frontal opening of the drums 3a - 3c with the dryer room 2.

In Figur 2 wird der Trockner 1 aus der Figur 1 mit einer optionalen Wärmerückgewinnung ausgestattet. Gleiche Teile haben dabei das gleiche Bezugszeichen. Auf das Gehäuse des Ventilators 15 im Anschluss an den Kanal 14 wird ein weiterer Kanal 16 aufgesetzt, der die Abluft 13 durch einen weiteren Wärmetauscher 17 strömen lässt und über einen Kanal 18 abführt. Der Wärmetauscher 17 ist gleichzeitig mit dem Kanal 12 verbunden, so dass die Frischluft 11, bevor sie in die Zusatzkammer 10 einströmt, schon eine Temperaturerhöhung durch den Wärmetauscher 17 erfahren hat. Mit dieser optionalen nachrüstbaren Lösung kann der thermische Wirkungsgrad des Trockners 1 weiter erhöht werden.In FIG. 2 is the dryer 1 from the FIG. 1 equipped with an optional heat recovery. The same parts have the same reference numerals. On the housing of the fan 15 in the connection to the channel 14, a further channel 16 is placed, which allows the exhaust air 13 to flow through another heat exchanger 17 and discharges via a channel 18. The heat exchanger 17 is connected simultaneously with the channel 12, so that the fresh air 11, before it flows into the auxiliary chamber 10, has already experienced a temperature increase by the heat exchanger 17. With this optional retrofittable solution, the thermal efficiency of the dryer 1 can be further increased.

Im Unterschied zum Stand der Technik strömt hierbei die Frischluft 11 nicht direkt in den Trockner 1, sondern erst in die Zusatzkammer 10, in der eine weitere Erwärmung durch eine Mischung mit der Trocknungsluft nach der Durchströmung der Warenbahn 5 stattfindet. In vorherigen Konstruktionen erfolgte diese Durchmischung der Frischluft mit der Trocknungsluft vor der Durchströmung der Warenbahn 5, wodurch die Temperatur der Trocknungsluft vor der Warenbahn 5 beeinflusst wird. Die Ausnutzung der Temperaturdifferenz zwischen Abluft 13 und Frischluft 11 reicht, um den thermischen Wirkungsgrad des Trockners 1 weiter zu erhöhen.In contrast to the prior art, in this case the fresh air 11 does not flow directly into the dryer 1, but only into the additional chamber 10, in which a further heating takes place by a mixture with the drying air after the flow through the web 5. In previous constructions, this mixing of the fresh air with the drying air was carried out before the flow through the web 5, whereby the temperature of the drying air before the web 5 is influenced. The utilization of the temperature difference between exhaust 13 and Fresh air 11 is sufficient to further increase the thermal efficiency of the dryer 1.

Figur 3 zeigt einen seitlichen Schnitt durch einen Trockner 1. Die Ventilatoren 19a - 19c, die die mit Feuchtigkeit gesättigte Trocknungsluft aus den Trommeln 3a - 3c absaugen, sind an den Heizungs- und Ventilatorraum 22 angeflanscht und über Anschlüsse 20a - 20c bzw. Adaptern mit der Zusatzkammer 10 verbunden. Gegenüberliegend sind die Trommeln 3a -3c ebenfalls über Anschlüsse mit der Zusatzkammer 10 verbunden. Die Trocknungsluft strömt aus den Trommeln 3a - 3c in die Zusatzkammer 10 und von der Zusatzkammer 10 über die Anschlüsse 20a - 20c in den Ansaugquerschnitt des jeweiligen Ventilators 19a -19c. Im Bereich der Trommel 3a wird die Abluft aus der Zusatzkammer 10 über einen Kanal 14, der an der Stirnseite angeordnet ist, entnommen (siehe Figur 1 und 2). Am Ende des Kanals 14 sorgt ein Ventilator 15 für die notwendige Luftströmung. Die Frischluftzufuhr erfolgt im Bereich der Trommel 3c über die Zusatzkammer 10, an die an der Stirnseite der Kanal 12 angeschlossen ist. FIG. 3 shows a side section through a dryer 1. The fans 19a - 19c, which suck the moisture-saturated drying air from the drums 3a - 3c, are flanged to the heating and fan room 22 and via terminals 20a - 20c or adapters with the additional chamber 10 connected. Opposite the drums 3a -3c are also connected via connections with the auxiliary chamber 10. The drying air flows from the drums 3a-3c into the auxiliary chamber 10 and from the additional chamber 10 via the ports 20a-20c into the intake cross-section of the respective fan 19a-19c. In the region of the drum 3a, the exhaust air from the additional chamber 10 via a channel 14 which is arranged on the front side, removed (see FIG. 1 and 2 ). At the end of the channel 14, a fan 15 provides the necessary air flow. The supply of fresh air takes place in the region of the drum 3 c via the additional chamber 10, to which the channel 12 is connected at the end face.

Durch die Zusatzkammer 10 entspannt sich die Trocknungsluft, so dass sich deren Strömungsgeschwindigkeit beim Austritt aus der Trommel 3a, 3b, 3c um ein vielfaches reduziert. Weiterhin kann durch den Unterdruck in der Zusatzkammer 10 die Frischluft 11 frei angesaugt und über diese dem Heizungs- und Ventilatorraum 22 mit Trocknungsluft zugeführt werden.By the additional chamber 10, the drying air relaxes, so that their flow rate at the exit from the drum 3a, 3b, 3c reduced by a multiple. Furthermore, the fresh air 11 can be sucked in freely by the negative pressure in the additional chamber 10 and fed via this to the heating and fan room 22 with drying air.

Innerhalb des Heizungs- und Ventilatorraumes 22 können Heizelemente 21 in Form von Wärmetauschern, einer oder mehreren Gasheizungen oder Elektroheizungen angeordnet sein, die die abgeführte Trocknungsluft 11 einschließlich der Frischluft auf die Trocknungstemperatur erwärmen.Within the heating and fan room 22 heating elements 21 may be arranged in the form of heat exchangers, one or more gas heaters or electric heaters, which heat the discharged drying air 11 including the fresh air to the drying temperature.

Figur 4 zeigt eine Rückansicht des Trockners 1, bei dem der Heizungs- und Ventilatorraum 22 ausgeblendet wurde. Hier sind die Öffnungen der Trommeln 3a - 3c zu erkennen, über die die Trommeln 3a - 3c mittels Anschlüssen mit der Zusatzkammer 10 verbunden ist. Die Frischluft 11 wird über einen Kanal 12 in die Zusatzkammer 10 eingeleitet. Innerhalb der Zusatzkammer 10 sind Trennbleche 23 in Form von Lochblechen angeordnet, die die Zusatzkammer 10 segmentieren, so dass die Verteilung der Frischluft auf die einzelnen Ventilatoren 19a - 19c beeinflusst werden kann. Ebenfalls ist es möglich, über nicht dargestellte Leitbleche die Verteilung der Frischluft innerhalb der Zusatzkammer 10 zu beeinflussen, beispielsweise von der Abluft zu trennen. FIG. 4 shows a rear view of the dryer 1, in which the heating and fan room 22 has been hidden. Here, the openings of the drums 3a - 3c can be seen, via which the drums 3a - 3c is connected by means of connections with the additional chamber 10. The fresh air 11 is introduced via a channel 12 into the additional chamber 10. Within the additional chamber 10 are dividers 23 arranged in the form of perforated plates, which segment the additional chamber 10, so that the distribution of the fresh air to the individual fans 19a - 19c can be influenced. It is also possible to influence the distribution of the fresh air within the auxiliary chamber 10 via guide plates, not shown, for example, to separate from the exhaust air.

Aus der Zusatzkammer 10 strömt das Gemisch aus Frisch- und Trocknungsluft über die Ventilatoren 19a - 19c in den Heizungs- und Ventilatorraum 22 ein. Es handelt sich hier um ein Kreislaufsystem, dem ein Teilmassenstrom in Form von Abluft entzogen und ein Teilmassenstrom in Form von Frischluft zugeführt wird.From the additional chamber 10, the mixture of fresh and drying air flows through the fans 19 a - 19 c in the heating and fan room 22 a. This is a circulation system, which extracts a partial mass flow in the form of exhaust air and a partial mass flow is supplied in the form of fresh air.

Der Heizungs- und Ventilatorraum 22 ist als separate Kammer im Bereich der hinteren Stirnseite des Trockners 1 angeordnet, wobei dazwischen die Zusatzkammer 10 angeordnet ist. Außerhalb des Heizungs- und Ventilatorraumes 22 sind die Antriebe der Ventilatoren 19a, 19b, 19c angeordnet, innerhalb befinden sich die Ventilatorräder. Je ein Ventilator 19a, 19b, 19c ist einer Trommel 3a, 3b, 3c zugeordnet. Die Ventilatoren 19a, 19b, 19c sind über Anschlüsse 20a - 20b bzw. Adapter mit der Zusatzkammer 10 und diese ebenfalls über Anschlüsse bzw. Adaptern mit den Trommeln 3a, 3b, 3c verbunden.The heating and fan room 22 is arranged as a separate chamber in the region of the rear end face of the dryer 1, wherein the additional chamber 10 is arranged therebetween. Outside the heating and fan room 22, the drives of the fans 19 a, 19 b, 19 c are arranged, are located inside the fan wheels. Depending on a fan 19a, 19b, 19c is associated with a drum 3a, 3b, 3c. The fans 19a, 19b, 19c are connected via connections 20a-20b or adapter with the additional chamber 10 and these also via terminals or adapters with the drums 3a, 3b, 3c.

Bezugszeichenreference numeral

11
Trocknerdryer
22
Trocknerraumdrying room
3a, b, c3a, b, c
Trommeldrum
4a, b, c4a, b, c
Achseaxis
55
Warenbahnweb
66
Einlassinlet
77
Umlenkwalzedeflecting
88th
Umlenkwalzedeflecting
99
Auslassoutlet
1010
Zusatzkammeradditional chamber
1111
Frischluftfresh air
1212
Kanalchannel
1313
Abluftexhaust
1414
Kanalchannel
1515
Ventilatorfan
1616
Kanalchannel
1717
Wärmetauscherheat exchangers
1818
Kanalchannel
19a, b, c19a, b, c
Ventilatorfan
20a, b, c20a, b, c
Anschlussconnection
2121
Heizelementheating element
2222
Heizungs- und VentilatorraumHeating and fan room
2323
TrennblechDivider

Claims (18)

  1. A dryer for a continuous web of textile material, comprising a dryer compartment (2) and with several drums, which are disposed within the dryer compartment (2), and the continuous web of textile material (5) at least partially looping around them, wherein heated drying air is flowing through the continuous web of textile material (5), which air is discharged via an interior compartment of the drums, characterized in that the dryer (1) includes a separate additional chamber (10), via which fresh air (11) is supplied and exhaust air (13) is discharged, wherein means for distributing the fresh air and/or means for separating the exhaust air from the fresh air and/or means for segmenting the additional chamber (10) are disposed within the additional chamber (10).
  2. The dryer according to claim 1, characterized in that the additional chamber (10) is disposed between a frontal side of the dryer (1) and a heating and ventilator compartment (22).
  3. The dryer according to claim 1, characterized in that the means are configured as separating plates (23) or guiding plates.
  4. The dryer according to claim 1, characterized in that the drying air is discharged into the additional chamber (10) via frontal-sided openings of the drums (3a to 3c).
  5. The dryer according to claim 2, characterized in that ventilators (19a to 19c) for absorbing the exhaust air from the dryer compartment (2) are disposed at the heating and ventilator compartment (22).
  6. The dryer according to claim 5, characterized in that the heating and ventilator compartment (22) is connected to the additional chamber (10) via connections (20a to 20c).
  7. The dryer according to claim 2, characterized in that the heating and ventilator compartment (22) is connected to the dryer compartment (2) via air ducts.
  8. The dryer according to any of the preceding claims, characterized in that a heat exchanger (17), which heats the fresh air (11) by means of the exhaust air (13) drawn from of the drying air, is disposed outside the additional chamber (10).
  9. The dryer according to claim 2, characterized in that means for heating the drying air are provided within the heating and ventilator compartment (22).
  10. The dryer according to claim 9, characterized in that the means for heating the drying air are configured as a heat exchanger, a gas burner, or as an electrical heater.
  11. A method for drying a continuous web of textile material, wherein drying air is heated and guided into a dryer compartment (2), in that a continuous web of textile material (5) at least partially loops around several drums, which are disposed within the dryer compartment (2), wherein the heated drying air flows through the continuous web of textile material (5) and is discharged via an interior compartment of the drum, characterized in that fresh air is supplied to a separate additional chamber (10) and exhaust air is discharged via the additional chamber (10), wherein the distribution of the fresh air is influenceable by a means within the additional chamber (10).
  12. The method for drying a continuous web of textile material according to claim 11, characterized in that the fresh air (11), in the area of the outlet of the continuous web of textile material (5), is supplied to the additional chamber (10) and the exhaust air (13) in the area of the entry of the continuous web of textile material (5) is discharged from the additional chamber (10).
  13. The method for drying a continuous web of textile material according to claim 11, characterized in that the fresh air (11) is mixed with the drying air within the additional chamber (10).
  14. The method for drying a continuous web of textile material according to claim 11, characterized in that a partial mass flow of exhaust air is withdrawn from the drying air and a partial mass flow of fresh air is supplied thereto.
  15. The method for drying a continuous web of textile material according to claim 14, characterized in that the exhaust air is discharged from the drying air at the location where its temperature level or energy level is the lowest.
  16. The method for drying a continuous web of textile material according to claim 11, characterized in that the fresh air and the drying air are heated within a heating and ventilator compartment (22).
  17. The method for drying a continuous web of textile material according to claim 16, characterized in that heating the fresh air and drying air is realized via a heat exchanger, a gas burner or an electrical heater.
  18. The method for drying a continuous web of textile material according to claim 11, characterized in that the fresh air (11) is mixed with the drying air prior to flowing into the additional chamber (10).
EP16000440.4A 2012-10-17 2013-07-05 Dryer and drying method for a web of textile goods Active EP3059539B1 (en)

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DE102012109878.6A DE102012109878B4 (en) 2012-10-17 2012-10-17 Dryers for a textile web
EP13736775.1A EP2909550B1 (en) 2012-10-17 2013-07-05 Dryer for a textile product web

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EP13736775.1A Division EP2909550B1 (en) 2012-10-17 2013-07-05 Dryer for a textile product web
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EP3059539B1 true EP3059539B1 (en) 2018-04-18

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EP16000440.4A Active EP3059539B1 (en) 2012-10-17 2013-07-05 Dryer and drying method for a web of textile goods
EP13736775.1A Active EP2909550B1 (en) 2012-10-17 2013-07-05 Dryer for a textile product web

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JP (1) JP2015514200A (en)
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DE (1) DE102012109878B4 (en)
RU (1) RU2015118228A (en)
WO (1) WO2014060056A1 (en)

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Publication number Publication date
CN104136871A (en) 2014-11-05
EP2909550A1 (en) 2015-08-26
WO2014060056A1 (en) 2014-04-24
JP2015514200A (en) 2015-05-18
DE102012109878B4 (en) 2015-04-02
DE102012109878A1 (en) 2014-04-17
CN104136871B (en) 2016-06-01
US20150267965A1 (en) 2015-09-24
RU2015118228A (en) 2016-12-10
EP3059538A1 (en) 2016-08-24
EP2909550B1 (en) 2019-10-30
EP3059539A1 (en) 2016-08-24
US9696088B2 (en) 2017-07-04

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