EP0586784A1 - Apparatus for the formation of an air flow system for the treatment of running web-like material - Google Patents
Apparatus for the formation of an air flow system for the treatment of running web-like material Download PDFInfo
- Publication number
- EP0586784A1 EP0586784A1 EP93104135A EP93104135A EP0586784A1 EP 0586784 A1 EP0586784 A1 EP 0586784A1 EP 93104135 A EP93104135 A EP 93104135A EP 93104135 A EP93104135 A EP 93104135A EP 0586784 A1 EP0586784 A1 EP 0586784A1
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- Prior art keywords
- nozzle
- material web
- web
- air flow
- air
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Classifications
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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
- F26B13/104—Supporting materials without tension, e.g. on or between foraminous belts supported by fluid jets only; Fluid blowing arrangements for flotation dryers, e.g. coanda nozzles
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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
Definitions
- the invention relates to a device for producing an air flow system for the treatment of continuous web-shaped material, air flows being generated by means of fans which are directed against the material to be treated from different directions by a nozzle system.
- From DE-29 08 348 A1 was a float dryer for webs, the housing of which is divided in the web guide plane in such a way that the two parts can be moved apart, in particular both housing parts inside each have a radial fan with this associated heating for heating and supplying the circulating air have channels leading to nozzle boxes and each radial fan on a side wall with the web guide plane parallel and the web direction vertical axis is arranged.
- This hover dryer is characterized in that the outgoing from the radial fan, in the upper housing part above and / or in the lower housing part below the nozzle boxes from the side wall to the middle of the housing, alternating channels on the housing end face arranged in one above or below the nozzle boxes and leading to the opposite end face Pass over the duct to which the nozzle boxes are connected.
- Another disadvantage is that the air distribution system which branches off from a fan to the nozzles causes very high energy losses.
- the air distribution in the individual areas of the nozzle system does not achieve the desired uniformity, both in terms of air speed and the amount of air escaping. Since the return air flow is discharged laterally, the air speed in the edge areas must be kept lower so that the continuous web-like material to be treated does not flutter around the edges.
- the flow of the recirculating air flow over the side edges is significantly involved in the high energy losses. Because of the high energy losses in the distribution and recirculation system, a very powerful fan is required. This causes in connection very loud operating noises with the air distribution system.
- the end links in the air distribution system namely the blowing nozzles directed against the path of the material passing through, are also unsatisfactory in the known forms.
- these consist of slots running transversely to the web conveying direction and arranged in pairs.
- a device for the floating guidance of material webs is known, the cross sections of the two slots of each floating nozzle being of different sizes.
- the blowing directions of the two slots of a nozzle are directed towards one another and are inclined at different angles of inclination against the sheet-like material to be conveyed, such that the blowing direction is inclined flatter in the conveying direction of the material passing through than the blowing direction inclined against the conveying direction.
- the slits inclined in the conveying direction have a larger cross section than the slits inclined against the conveying direction. This is to achieve a smooth, flutter-free passage of the web-like material.
- nozzles have considerable problems. On the one hand, their dimensional accuracy is complicated and expensive to manufacture. On the other hand, the dimensions of the slots change under the influence of the heat supplied with the blown air.
- DE-26 13 135 C3 discloses an air cushion nozzle in which the nozzle outlet cross sections can be kept constant. This is achieved in that the nozzles are designed as rows of holes, the holes of each row on the side facing the center of the nozzle by a common guide plate and in the rest of the area are formed from the edges by webs separated from each other in a leg of the nozzle housing which is under tension and is supported with the webs on the guide plate.
- the nozzle openings formed in this way cause considerable turbulence in the flows of the blown air, which have a negative effect on the conveyance of the material web passing through. In addition, these nozzles cause particularly high energy losses.
- the invention has for its object to provide a device of the type designated at the beginning of the description and in the preamble of claim 1, in which the above-described defects of the known devices of this type are largely eliminated.
- the overall height is to be reduced considerably, so that less building space is required.
- the entire device should be able to be adapted much better to different spatial conditions and different output sizes than the known devices of this type.
- the energy requirement should be reduced with increased performance, in particular in that unnecessary energy losses are largely avoided by optimally guiding the air flows, which can also be achieved results in a reduction in operational noise.
- the blowing nozzles are to be included, which are to be designed in such a way that they can be manufactured more cheaply than the known nozzles of this type with an optimal air guidance.
- the segment has a box-shaped housing 1 with heat-insulating walls.
- material web 2 called - are respectively horizontally provided in the inlet-side end wall 1a a slot-shaped inlet opening 3 and the outlet-side end wall 1b is a slot-shaped outlet opening. 4
- the two end walls 1a, 1b are equipped with conventional means for connection to the respectively preceding or following segment.
- three airflow elements 5 are arranged above the material web 2 with the blowing direction downward and below the material web 2 three further airflow elements 5 with the blowing direction upward.
- All airflow elements 5 are structurally identical.
- Each airflow element 5 contains a crossflow fan 6 and a nozzle unit 7 , each with two nozzle slots 7a, 7b running parallel to the fan axis 6a .
- the two nozzle slots 7a, 7b have a cross section of the same size, which is in each case delimited by two sheet metal walls 8, 9 running parallel to one another.
- the blowing direction of both nozzle slots 7a, 7b are inclined at an equal angle to the conveying plane of the continuous material web 2 .
- each delimiting the cross section of a nozzle slot 7a, 7b are arranged elements of sheet metal strips 10, 11 which stabilize the air flow in the blowing direction and are made of sheet metal strips 10, 11 which are corrugated in the blowing direction and run in the blowing direction.
- a corrugated sheet metal strip 10, 11 which runs continuously over the entire length of the nozzle slot , it is also possible to use a plurality of sections of such a corrugated sheet metal strip inserted at specific intervals from one another.
- Heating elements 13 for heating the blown air are arranged between the airflow elements 5 above and below the conveying plane of the material web 2 .
- the exhaust air emerging from the nozzle slots 7a, 7b is not passed over the side edges of the material web 2 , but rather over the outer edges of the nozzle slots 7a, 7b through the heating elements 13 to the crossflow fans 6 fed again.
- support rollers 14 are arranged below the material web 2 instead of air flow elements with upward blowing air flows, by which the material web 2 is carried.
- heating elements 13 are provided between the support rollers 14 and between the air flow elements 5 above the material web 2 .
- Embodiment 2 airflow members 5 with an upwardly directed air streams and heating elements 3 are arranged only below the material web, the material web 2 is supported by the nozzle units 7.
- the channels stabilizing the air flow in the blowing direction can also be directed more or less obliquely outwards from the central region.
- the air streams can also be routed with the cross-flow blowers without guide channels. Due to the performance characteristics of the cross-flow blowers, relatively large amounts of air can be passed through the nozzles with little effort. This ensures particularly gentle drying with high heat transfer. Due to the modular structure of the device, there are previously no constructional possibilities with regard to the web guidance: The web can not only be guided approximately horizontally, slightly inclined or vertically, but also in curves up to an arc.
- the modules each formed from a nozzle-blower unit can also be used without a heat generator only for guiding webs without the need for separate blowers.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Fiber Materials (AREA)
- Paper (AREA)
- Advancing Webs (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Erzeugung eines Luftstromsystems für die Behandlung von durchlaufendem bahnförmigem Gut, wobei Luftströme mittels Ventilatoren erzeugt werden, die durch ein Düsensystem aus verschiedenen Richtungen gegen das zu behandelnde Gut gerichtet sind.The invention relates to a device for producing an air flow system for the treatment of continuous web-shaped material, air flows being generated by means of fans which are directed against the material to be treated from different directions by a nozzle system.
Durch die DE-29 08 348 A1 wurde ein Schwebetrockner für Warenbahnen, dessen Gehäuse in der Bahnführungsebene derart geteilt ist, daß die beiden Teile auseinanderfahrbar sind, wobei insbesondere beide Gehäuseteile im Innern jeweils ein Radialgebläse mit diesem zugeordneter Heizung für die Aufheizung und Zuführung der Umluft über zu Düsenkästen führende Kanäle aufweisen und jedes Radialgebläse an einer Seitenwand mit zur Bahnführungsebene paralleler und zur Warenbahnlaufrichtung senkrechter Achse angeordnet ist. Dieser Schwebetrockner ist dadurch gekennzeichnet, daß die vom Radialgebläse ausgehenden, im oberen Gehäuseteil oberhalb und/oder im unteren Gehäuseteil unterhalb der Düsenkästen von der Seitenwand zur Gehäusemitte hin wechselnde Kanäle an der Gehäusestirnseite in einen oberhalb bzw. unterhalb der Düsenkästen angeordneten und zur gegenüberliegenden Stirnseite führenden Kanal übergehen, an dem die Düsenkästen angeschlossen sind.From DE-29 08 348 A1 was a float dryer for webs, the housing of which is divided in the web guide plane in such a way that the two parts can be moved apart, in particular both housing parts inside each have a radial fan with this associated heating for heating and supplying the circulating air have channels leading to nozzle boxes and each radial fan on a side wall with the web guide plane parallel and the web direction vertical axis is arranged. This hover dryer is characterized in that the outgoing from the radial fan, in the upper housing part above and / or in the lower housing part below the nozzle boxes from the side wall to the middle of the housing, alternating channels on the housing end face arranged in one above or below the nozzle boxes and leading to the opposite end face Pass over the duct to which the nozzle boxes are connected.
Diese und ähnliche bekannte Vorrichtungen haben erhebliche Nachteile: Sie haben eine große Bauhöhe und erfordern deshalb sehr hohe Betriebsräume, insbesondere bei Anlagen, in denen mangels ausreichender Raumlänge die Bahn des zu behandelnden Gutes in mehreren Etagen übereinander laufen muß. Solche Vorrichtungen sind also nicht nur durch ihr großes eigenes Bauvolumen, sondern auch durch ihren großen Raumbedarf sehr teuer und nur schwer gegebenen Räumlichkeiten anzupassen.These and similar known devices have considerable disadvantages: they have a large overall height and therefore require very high operating rooms, particularly in systems in which, for lack of sufficient room length, the web of the material to be treated has to run one above the other on several floors. Such devices are therefore not only very expensive due to their large volume, but also due to their large space requirement and are difficult to adapt to existing spaces.
Ein weiterer Nachteil besteht darin, daß das von einem Ventilator ausgehende bis zu den Düsen sich verzweigende Luft-Verteilungssystem sehr hohe Energieverluste verursacht. Dabei erreicht die Luftverteilung in den einzelnen Bereichen des Düsensystems sowohl hinsichtlich der Luftgeschwindigkeit, als auch der austretenden Luftmenge nicht die gewünschte Gleichmäßigkeit. Da der Umluft-Rückstrom seitlich abgeführt wird, muß die Luftgeschwindigkeit in den Randbereichen geringer gehalten werden, damit das zu behandelnde durchlaufende bahnförmige Gut nicht an den Rändern flattert. Die Führung des Umluft-Rückstromes über die Seitenränder ist in erheblichem Maß an den hohen Energieverlusten beteiligt.
Wegen der hohen Energieverluste im Verteilungs- und Rückführungssystem ist ein sehr leistungsstarker Ventilator erforderlich. Dieser verursacht in Verbindung mit dem Luft-Verteilungssystem sehr laute Betriebsgeräusche.Another disadvantage is that the air distribution system which branches off from a fan to the nozzles causes very high energy losses. The air distribution in the individual areas of the nozzle system does not achieve the desired uniformity, both in terms of air speed and the amount of air escaping. Since the return air flow is discharged laterally, the air speed in the edge areas must be kept lower so that the continuous web-like material to be treated does not flutter around the edges. The flow of the recirculating air flow over the side edges is significantly involved in the high energy losses.
Because of the high energy losses in the distribution and recirculation system, a very powerful fan is required. This causes in connection very loud operating noises with the air distribution system.
Schließlich sind auch die Endglieder im Luft-Verteilungssystem, nämlich die gegen die Bahn des durchlaufenden Gutes gerichteten Blasdüsen in den bekannten Formen nicht zufriedenstellend. Diese bestehen bei bekannten Vorrichtungen aus quer zur Bahn-Förderrichtung verlaufenden, jeweils paarweise angeordneten Schlitzen.
Aus der DE-26 15 258 C2 ist eine Vorrichtung zum schwebenden Führen von Materialbahnen bekannt, wobei die Querschnitte der beiden Schlitze einer jeden Schwebedüse verschieden groß sind. Die Blasrichtungen der beiden Schlitze einer Düse sind gegeneinander gerichtet und dabei in verschiedenen Neigungswinkeln gegen das zu fördernde bahnförmige Gut geneigt, derart, daß die Blasrichtung in Förderrichtung des durchlaufendes Gutes flacher geneigt ist, als die gegen die Förderrichtung geneigte Blasrichtung. Dabei haben die in Förderrichtung geneigten Schlitze einen größeren Querschnitt, als die gegen die Förderrichtung geneigten Schlitze. Damit soll ein ruhiger, flatterfreier Durchlauf des bahnförmigen Gutes erzielt werden. Solche Düsen sind jedoch mit erheblichen Problemen behaftet. Zum einen ist ihre Herstellung in der erforderlichen Maßhaltigkeit kompliziert und teuer. Zum andern verändern sich die Maße der Schlitze unter dem Einfluß der mit der Blasluft zugeführten Wärme.Finally, the end links in the air distribution system, namely the blowing nozzles directed against the path of the material passing through, are also unsatisfactory in the known forms. In known devices, these consist of slots running transversely to the web conveying direction and arranged in pairs.
From DE-26 15 258 C2 a device for the floating guidance of material webs is known, the cross sections of the two slots of each floating nozzle being of different sizes. The blowing directions of the two slots of a nozzle are directed towards one another and are inclined at different angles of inclination against the sheet-like material to be conveyed, such that the blowing direction is inclined flatter in the conveying direction of the material passing through than the blowing direction inclined against the conveying direction. The slits inclined in the conveying direction have a larger cross section than the slits inclined against the conveying direction. This is to achieve a smooth, flutter-free passage of the web-like material. However, such nozzles have considerable problems. On the one hand, their dimensional accuracy is complicated and expensive to manufacture. On the other hand, the dimensions of the slots change under the influence of the heat supplied with the blown air.
Die DE-26 13 135 C3 offenbart eine Luftkissendüse, bei der die Düsen-Austrittsquerschnitte konstant gehalten werden können. Dies wird dadurch erreicht, daß die Düsen als Lochreihen ausgebildet sind, wobei die Löcher jeder Reihe auf der zur Düsenmitte hin gelegenen Seite von einem gemeinsamen Leitblech und im übrigen Bereich von den Rändern durch Stege voneinander getrennter Randaussparungen in einem Schenkel des Düsengehäuses gebildet werden, der unter Vorspannung steht und sich mit den Stegen auf dem Leitblech abstützt.
Die so gebildeten Düsenöffnungen verursachen erhebliche Turbulenzen in den Strömungen der Blasluft, die sich negativ auf die Förderung der durchlaufenden Materialbahn auswirken. Außerdem verursachen diese Düsen ganz besonders hohe Energieverluste.DE-26 13 135 C3 discloses an air cushion nozzle in which the nozzle outlet cross sections can be kept constant. This is achieved in that the nozzles are designed as rows of holes, the holes of each row on the side facing the center of the nozzle by a common guide plate and in the rest of the area are formed from the edges by webs separated from each other in a leg of the nozzle housing which is under tension and is supported with the webs on the guide plate.
The nozzle openings formed in this way cause considerable turbulence in the flows of the blown air, which have a negative effect on the conveyance of the material web passing through. In addition, these nozzles cause particularly high energy losses.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der am Anfang der Beschreibung und im Oberbegriff des Anspruchs 1 bezeichneten Gattung zu schaffen, bei der die vorbeschriebenen Mängel der bekannten Vorrichtungen dieser Art weitestgehend behoben sind. Die Bauhöhe soll erheblich reduziert werden, so daß weniger Gebäuderaum benötigt wird. Die gesamte Vorrichtung soll wesentlich besser verschiedenen Raumverhältnissen und verschiedenen Leistungsgrößen angepaßt werden können, als die bekannten Vorrichtungen dieser Art. Der Energiebedarf soll bei gesteigerter Leistungsfähigkeit gemindert werden, insbesondere dadurch, daß unnötige Energieverluste weitestgehend vermieden werden durch eine optimale Führung der Luftströme, welches sich auch in einer Senkung des Betriebslärms auswirkt. In die Schaffung einer optimalen Führung der Luftströme sind die Blasdüsen einzubeziehen, die so gestaltet werden sollen, daß sie bei optimaler Luftführung billiger herstellbar sind, als die bekannten Düsen dieser Art.The invention has for its object to provide a device of the type designated at the beginning of the description and in the preamble of
Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß eine Vorrichtung zur Erzeugung eines Luftstromsystems für die Behandlung von durchlaufendem bahnförmigem Gut mit den Merkmalen gemäß Anspruch 1 ausgestattet ist.The stated object is achieved in that a device for generating an air flow system for the treatment of continuous web-like material is equipped with the features of
Weitere Einzelheiten der Erfindung gehen aus den Ansprüchen 2 bis 13 hervor.Further details of the invention emerge from
Die Erfindung wird im Folgenden anhand einer sie beispielsweise wiedergebenden Zeichnung näher erläutert.
Es zeigen:
- Fig. 1
- Einen schematisierten Längsschnitt durch ein Segment einer erfindungsgemäßen Vorrichtung in Form eines Schwebetrockners,
- Fig. 2
- einen Querschnitt nach der Linie A - A in Fig. 1,
- Fig. 3
- einen schematisierten Längsschnitt durch einen Trockner mit Tragwalzen,
- Fig. 4
- einen schematisierten Längsschnitt durch einen Trockner mit Gleitflächen-Düsen,
- Fig. 5
- einen Querschnitt durch den Düsenbereich eines Luftstromelementes.
Show it:
- Fig. 1
- A schematic longitudinal section through a segment of a device according to the invention in the form of a floating dryer,
- Fig. 2
- 2 shows a cross section along the line AA in FIG. 1,
- Fig. 3
- a schematic longitudinal section through a dryer with support rollers,
- Fig. 4
- a schematic longitudinal section through a dryer with sliding surface nozzles,
- Fig. 5
- a cross section through the nozzle area of an air flow element.
Bei dem in Fig. 1 dargestellten Ausführungsbeispiel der Erfindung in Form eines Segmentes von einem Schwebetrockner für bahnförmiges Gut hat das Segment ein kastenförmiges Gehäuse 1 mit wärmedämmenden Wänden. In Höhe der Führungsebene des bahnförmigen Gutes - im Folgenden Materialbahn 2 genannt - sind jeweils waagerecht in der einlaufseitigen Stirnwand 1a eine schlitzförmige Einlauföffnung 3 und in der auslaufseitigen Stirnwand 1b eine schlitzförmige Auslauföffnung 4 vorgesehen. Die beiden Stirnwände 1a, 1b sind mit üblichen Mitteln zur Verbindung mit dem jeweils vorhergehenden bzw. nachfolgenden Segment ausgestattet.In the embodiment of the invention shown in FIG. 1 in the form of a segment of a floating dryer for web-like material, the segment has a box-
In dem Segment sind drei Luftstromelemente 5 oberhalb der Materialbahn 2 mit Blasrichtung nach unten und unterhalb der Materialbahn 2 drei weitere Luftstromelemente 5 mit Blasrichtung nach oben angeordnet.In the segment, three
Alle Luftstromelemente 5 sind konstruktiv identisch. Jedes Luftstromelement 5 enthält einen Querstromventilator 6 und eine Düseneinheit 7 mit je zwei parallel zur Ventilatorachse 6a verlaufenden Düsenschlitzen 7a, 7b. Die beiden Düsenschlitze 7a, 7b haben einen gleichgroßen Querschnitt, der jeweils von zwei parallel zueinander verlaufenden Blechwänden 8, 9 begrenzt ist. Die Blasrichtung beider Düsenschlitze 7a, 7b sind in einem gleichen Winkel gegen die Förderebene der durchlaufenden Materialbahn 2 geneigt gerichtet. Zwischen den beiden jeweils den Querschnitt eines Düsenschlitzes 7a, 7b begrenzenden Blechwänden 8, 9 sind den Luftstrom in Blasrichtung stabilisierende Elemente aus quer zur Blasrichtung gewellten, in Blasrichtung verlaufende Kanäle bildenden Blechbändern 10, 11 angeordnet. Statt eines jeweils über die ganze Düsenschlitzlänge durchgehenden gewellten Blechbandes 10, 11 können auch mehrere in bestimmten Abständen voneinander eingesetzte Abschnitte eines solchen gewellten Blechbandes eingesetzt sein.All
Die beiden einander zugekehrten Blechwände 9 der Düsenschlitze 7a, 7b bilden gemeinsam mit einer den Raum zwischen den beiden Düsenschlitzen 7a, 7b in der Ebene der Düsenmündungen parallel zur Förderebene der Materialbahn 2 überbrückenden Düsenplatte 12 ein einstückiges Bauteil, wobei die Blechwände 9 im Innern des Luftstromelementes 5 oberhalb des Querstromventilators 6 zusammenlaufen.The two mutually facing
Zwischen den Luftstromelementen 5 oberhalb und unterhalb der Förderebene der Materialbahn 2 sind Heizelemente 13 zur Erwärmung der Blasluft angeordnet. Die aus den Düsenschlitzen 7a, 7b tretende Abluft wird nicht über die Seitenränder der Materialbahn 2, sondern über die Außenränder der Düsenschlitze 7a, 7b durch die Heizelemente 13 hindurch den Querstromventilatoren 6 wieder zugeführt.
Bei dem in Fig. 3 dargestellten Ausführungsbeispiel sind unterhalb der Materielbahn 2 anstelle von Luftstromelementen mit nach oben gerichteten Blasluftströmen Tragwalzen 14 angeordnet, von denen die Materialbahn 2 getragen wird. Dabei sind zwischen den Tragwalzen 14 ebenso wie zwischen den Luftstromelementen 5 oberhalb der Materialbahn 2 Heizelemente 13 vorgesehen.
In the exemplary embodiment shown in FIG. 3,
Bei dem in Fig. 4 dargestellten Ausführungsbeispiel sind nur unterhalb der Materialbahn 2 Luftstromelemente 5 mit nach oben gerichteten Luftstromen und Heizelemente 3 angeordnet, wobei die Materialbahn 2 von den Düseneinheiten 7 getragen wird.In the illustrated in Fig. 4
Um bei Bahnen von zur Bildung von Längsfalten neigendem Material einen in die Breite gerichteten Streckeffekt zu erzielen, können die den Luftstrom in Blasrichtung stabilisierenden Kanäle auch vom Mittenbereich mehr oder weniger schräge nach außen gerichtet sein.In order to achieve a widthwise stretching effect in webs of material that tends to form longitudinal folds, the channels stabilizing the air flow in the blowing direction can also be directed more or less obliquely outwards from the central region.
Bei problemlos förderbarem Bahnmaterial können die Luftströme auch ohne Leitkanäle allein mit den Querstromgebläsen geführt werden.
Bedingt durch die Leistungscharakteristik der Querstromgebläse lassen sich bei geringem Aufwand verhältnismäßig große Luftmengen in den Düsen durchsetzen. Dadurch ist eine besonders schonende Trocknung bei hohem Wärmeübergang gegeben.
Durch den modularen Aufbau der Vorrichtung ergeben sich bisher nicht vorhandene bautechnische Möglichkeiten in Bezug auf die Bahnführung: So kann die Warenbahn nicht nur annähernd horizontal, schwach geneigt oder vertikal, sondern auch in Kurven bis hin zum Kreisbogen geführt werden.If the web material can be conveyed without any problems, the air streams can also be routed with the cross-flow blowers without guide channels.
Due to the performance characteristics of the cross-flow blowers, relatively large amounts of air can be passed through the nozzles with little effort. This ensures particularly gentle drying with high heat transfer.
Due to the modular structure of the device, there are previously no constructional possibilities with regard to the web guidance: The web can not only be guided approximately horizontally, slightly inclined or vertically, but also in curves up to an arc.
Die jeweils aus einer Düsen-Gebläseeinheit gebildeten Module können auch ohne Wärmeerzeuger lediglich zur Führung von Warenbahnen eingesetzt werden, ohne daß separate Gebläse erforderlich sind.The modules each formed from a nozzle-blower unit can also be used without a heat generator only for guiding webs without the need for separate blowers.
Claims (13)
dadurch gekennzeichnet,
daß sie aus miteinander verbindbaren Segmenten besteht, die jeweils wenigstens einen quer zur Förderrichtung des bahnförmiges Gutes (Materialbahn 2) angeordneten Querstromventilator (6) und eine Düseneinheit (7) mit zwei parallel zur Ventilatorachse (6a) verlaufenden Düsenschlitzen (7a, 7b) oder zwei Reihen Lochdüsen aufweisen, wobei jeder Querstromventilator (6) zusammen mit einer Düseneinheit (7) ein modulartiges, funktionell in sich geschlossenes, unabhängig von weiteren Luftstromelementen eines Segmentes arbeitendes Luftstromelement (5) bildet.Device for producing an air flow system for the treatment of continuous web-like material, air streams being generated by means of fans which are directed against the continuous material web from different directions by a nozzle system,
characterized,
that it consists of interconnectable segments, each having at least one cross-flow fan ( 6 ) arranged transversely to the conveying direction of the web-shaped material (material web 2 ) and a nozzle unit (7) with two nozzle slots (7a, 7b) running parallel to the fan axis (6a ) or two Have rows of perforated nozzles, each crossflow fan (6) together with a nozzle unit (7) forming a modular, functionally self-contained airflow element (5) that works independently of other airflow elements of a segment.
dadurch gekennzeichnet,
daß ein Segment mehrere Luftstromelemente (5) enthält, die gemeinsam in einem geschlossenen Gehäuse (1) untergebracht sind, welches in Höhe der Führungsebene des bahnförmigen Gutes (Materialbahn 2) an der einlaufseitigen Stirnwand und an der auslaufseitigen Stirnwand je eine schlitzförmige Öffnung (3, 4) zum Durchlaß der Materialbahn (2) hat, wobei gleichzeitig die einlaufseitige Öffnung (3) der Frischluftzufuhr und die auslaufseitige Öffnung (4) als Abluftauslaß dient.Device according to claim 1,
characterized,
that a segment contains several airflow elements (5) , which are housed together in a closed housing (1) , which is at the level of the guide level of the web-like material (material web 2 ) the inlet-side end wall and on the outlet-side end wall each have a slot-shaped opening (3, 4) for the passage of the material web (2) , the inlet-side opening (3) of the fresh air supply and the outlet-side opening (4) simultaneously serving as exhaust air outlet.
dadurch gekennzeichnet,
daß in einem Segment wenigstens ein Luftstromelement (5) oberhalb der durchlaufenden Materialbahn (2) mit Blasrichtung nach unten und wenigstens ein Luftstromelement (5) unterhalb der Materialbahn (2) mit Blasrichtung nach oben angeordnet sind.Device according to one of claims 1 or 2,
characterized by
that at least one airflow element (5) above the continuous material web (2) with blowing direction down and at least one airflow element (5) below the material web (2) with blowing direction are arranged in a segment.
dadurch gekennzeichnet,
daß in einem Segment mehrere Luftstromelemente (5) oberhalb der Materialbahn (2) mit Blasrichtung nach unten und unterhalb der Materialbahn (2) mehrere diese tragende Tragwalzen (14) angeordnet sind.Device according to one of claims 1 or 2,
characterized,
that several air flow elements (5) are arranged above the material web (2) with the blowing direction downwards and below the material web ( 2) several supporting rollers (14) carrying these.
dadurch gekennzeichnet,
daß in einem Segment mehrere Luftstromelemente (5) unterhalb der Materialbahn (2) mit Blasrichtung nach oben angeordnet sind, wobei sich oberhalb der Materialbahn (2) in dem Gehäuse (1) ein freier Raum befindet.Device according to one of claims 1 or 2,
characterized,
that several airflow elements (5) are arranged in a segment below the material web (2) with the blowing direction upwards, there being a free space above the material web (2) in the housing (1) .
dadurch gekennzeichnet,
daß zwischen den Luftstromelementen (5) Heizelemente (13) zur Erwärmung der Luftströme angeordnet sind, wobei das Gehäuse (1) wärmedämmende Wände hat.Device according to one of claims 1 to 5 for drying web-like material, wherein each segment surrounded by a housing (1) has several at regular intervals in the conveying direction has air flow elements (5) arranged one behind the other,
characterized,
that between the air flow elements (5) heating elements (13) for heating the air currents are arranged, the housing (1) having heat-insulating walls.
dadurch gekennzeichnet,
daß
characterized,
that
dadurch gekennzeichnet,
daß ein zwischen den beiden den Düsenquerschnitt begrenzenden Blechwänden (8, 9) angeordnetes, den Luftstrom in Blasrichtung stabilisierendes Element aus einem quer zur Blasrichtung gewellten, in Blasrichtung verlaufende Kanäle bildenden Blechband (10, 11) besteht.Device according to claim 7,
characterized,
that an element arranged between the two sheet metal walls (8, 9) delimiting the nozzle cross-section and stabilizing the air flow in the blowing direction consists of a sheet metal strip (10, 11) which forms corrugations transverse to the blowing direction and runs in the blowing direction.
dadurch gekennzeichnet,
daß in wenigstens einem der beiden Düsenschlitze (7a, 7b) das den Luftstrom stabilisierende gewellte Blechband (10, 11) in mehrere in Abständen voneinander angeordnete Abschnitte unterteilt ist.Device according to claim 8,
characterized,
that in at least one of the two nozzle slots (7a, 7b) the corrugated sheet metal strip (10, 11) stabilizing the air flow is divided into several sections arranged at intervals from one another.
dadurch gekennzeichnet,
daß die zwischen den beiden den Düsenquerschnitt begrenzenden Blechwänden (8, 9) angeordneten, die Luftströme in Blasrichtung stabilisierenden Elemente aus vom Mittenbereich in Förderrichtung schräge nach außen gerichteten Kanälen bestehen.Device according to one of claims 7 to 9,
characterized,
that the arranged between the two sheet metal walls (8, 9) delimiting the nozzle cross section and stabilizing the air streams in the blowing direction consist of channels obliquely directed outwards from the central region in the conveying direction.
dadurch gekennzeichnet,
daß die beiden einander zugekehrten Blechwände (9) der Düsenschlitze (7a, 7b) gemeinsam mit einer den Raum zwischen den beiden Düsenschlitzen (7a,7b) in der Ebene der Düsenmündungen parallel zur Förderebene der Materialbahn (2) überbrückenden Düsenplatte (12) ein einstückiges Bauteil bilden.Device according to one of claims 1 to 10,
characterized,
that the two mutually facing sheet metal walls (9) of the nozzle slots (7a, 7b) together with a nozzle plate (12) bridging the space between the two nozzle slots (7a, 7b) in the plane of the nozzle mouths parallel to the conveying plane of the material web (2) Form part.
dadurch gekennzeichnet,
daß die Düsenplatte (12) wenigstens in der Nähe des in Förderrichtung hinteren Düsenschlitzes (7a) mit Luftdurchlässen versehen ist.Device according to claim 11,
characterized,
that the nozzle plate (12) is provided with air passages at least in the vicinity of the rear nozzle slot (7a) in the conveying direction.
dadurch gekennzeichnet,
daß die Summe der Querschnitte der Luftdurchlässe in der Düsenplatte (12) in der Nähe des in Förderrichtung hinteren Düsenschlitzes (7a) größer ist, als in der übrigen Fläche der Düsenplatte (12). Device according to claim 12,
characterized,
that the sum of the cross sections of the air passages in the nozzle plate (12) in the vicinity of the rear nozzle slot (7a) in the conveying direction is greater than in the remaining area of the nozzle plate (12).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4229804 | 1992-09-07 | ||
| DE4229804A DE4229804A1 (en) | 1992-09-07 | 1992-09-07 | Device for generating an air flow system for the treatment of continuous sheet material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0586784A1 true EP0586784A1 (en) | 1994-03-16 |
| EP0586784B1 EP0586784B1 (en) | 1996-10-09 |
Family
ID=6467377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93104135A Expired - Lifetime EP0586784B1 (en) | 1992-09-07 | 1993-03-13 | Apparatus for the formation of an air flow system for the treatment of running web-like material |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0586784B1 (en) |
| AT (1) | ATE144041T1 (en) |
| DE (2) | DE4229804A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19536352A1 (en) * | 1995-09-29 | 1997-04-10 | Peter Dipl Ing Gellrich | Contact-free guiding and handling of continuous material web |
| DE10238765A1 (en) * | 2002-08-23 | 2004-03-04 | Voith Paper Patent Gmbh | Arrangement for contactless guiding and / or deflecting and / or handling a running material web, in particular made of paper or cardboard, and built-in module for building up such an arrangement |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4412071C2 (en) * | 1994-04-11 | 1996-04-18 | Keller Gmbh | Nozzle box for ceramic dryers |
| AU2139197A (en) * | 1996-03-29 | 1997-10-22 | Minnesota Mining And Manufacturing Company | Apparatus and method for drying a coating on a substrate employing multiple drying subzones |
| DE19934487B4 (en) * | 1999-07-22 | 2004-04-29 | Systronic Systemlösungen für die Elektronikindustrie GmbH | Continuous dryer for panels or webs |
| DE10062618B4 (en) * | 2000-12-15 | 2004-04-29 | Systronic Systemlösungen für die Elektronikindustrie GmbH | Continuous dryer for panels or webs |
| CN105091530A (en) * | 2015-08-14 | 2015-11-25 | 成都佳美嘉科技有限公司 | Chemical fiber drying mechanism |
| CN106524712A (en) * | 2016-11-02 | 2017-03-22 | 重庆群禾纺织有限公司 | Energy-saving dryer for textile cloth |
| CN111121418B (en) * | 2019-11-29 | 2021-04-20 | 安吉县宇宏粘土化工有限公司 | Straw drying equipment |
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|---|---|---|---|---|
| DE970045C (en) * | 1949-01-21 | 1958-08-14 | Svenska Flaektfabriken Ab | Device for drying web-shaped material |
| DE1095246B (en) * | 1953-09-02 | 1960-12-22 | Monforts Fa A | Device for the continuous treatment, in particular drying, of web-like goods |
| DE975392C (en) * | 1949-10-29 | 1961-11-16 | Lufttechnische Ges M B H | Drying device for metal strips painted on both sides |
| FR1340311A (en) * | 1962-09-06 | 1963-10-18 | Chantiers De Nantes Atel | Device for drying flexible strips moved longitudinally |
| GB1019591A (en) * | 1961-01-28 | 1966-02-09 | Spooner Dryer & Eng Co Ltd | Improvements in or relating to forced convection |
| DE1292082B (en) * | 1963-11-16 | 1969-04-03 | Kalle Ag | Method and device for treating, in particular drying, free-floating, band-shaped material |
| DE1629029A1 (en) * | 1965-03-09 | 1971-01-14 | Erich Pagendarm | Nozzle dryer with frictionless web guide |
| DE2039500A1 (en) * | 1969-07-08 | 1972-02-10 | Ruthner Ind Planungs Ag | Method and device for guiding panels or endless belts through containers formed from shallow channels |
| DE1785111A1 (en) * | 1968-08-10 | 1972-02-10 | Famatex Gmbh Fabrik Fuer Texti | Device for ventilating material webs |
| DE2502367A1 (en) * | 1974-06-10 | 1975-12-18 | Montini Prodotti Tessili S A S | Drying installation partic for fabric lengths - has zoned chamber construction for hot air and radiant heat circulation |
| DE2556442A1 (en) * | 1975-12-15 | 1977-06-23 | Kramer Carl | METHOD FOR FLOATING GUIDANCE OF TRACKS AND DEVICE FOR IMPLEMENTING THE METHOD |
| DE2615258A1 (en) * | 1976-04-08 | 1977-10-20 | Vits Maschinenbau Gmbh | Air cushion strip transport equipment - has slots in nozzles at steeper angle on one side than other |
| US4060914A (en) * | 1976-08-18 | 1977-12-06 | Proctor & Schwartz, Inc. | Apparatus for treating material with a gaseous medium |
| DE2647963A1 (en) * | 1976-10-22 | 1978-04-27 | Brueckner Apparatebau Gmbh | Textile strip delivery mechanism to conveyor - uses air jets with components in travel direction and towards edges |
| DE3111744A1 (en) * | 1980-03-28 | 1982-01-07 | Valmet Oy, 001300 Helsinki | PRESSURE PRESSURE NOZZLE FOR TREATING RAIL-SHAPED MATERIAL |
| GB2088426A (en) * | 1980-11-28 | 1982-06-09 | Primatex Machinery Private Ltd | Drying wet textile fabrics |
| GB2116510A (en) * | 1982-03-15 | 1983-09-28 | Grace W R & Co | Compact air bar assembly for contactless web support |
| US4455136A (en) * | 1981-06-29 | 1984-06-19 | Chugai Ro Co., Ltd. | Floating equipment and floating-type heat treating furnace for striplike works |
| US4698914A (en) * | 1986-05-29 | 1987-10-13 | E. I. Du Pont De Nemours And Company | Setting/drying process for flexible web coating |
| EP0448983A2 (en) * | 1990-03-30 | 1991-10-02 | Wsp Ingenieurgesellschaft Für Wärmetechnik, Strömungstechnik Und Prozesstechnik Mit Beschränkter Haftung | Apparatus for blowing onto the two sides of a web-like material |
-
1992
- 1992-09-07 DE DE4229804A patent/DE4229804A1/en not_active Withdrawn
-
1993
- 1993-03-13 AT AT93104135T patent/ATE144041T1/en not_active IP Right Cessation
- 1993-03-13 DE DE59304107T patent/DE59304107D1/en not_active Expired - Lifetime
- 1993-03-13 EP EP93104135A patent/EP0586784B1/en not_active Expired - Lifetime
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE970045C (en) * | 1949-01-21 | 1958-08-14 | Svenska Flaektfabriken Ab | Device for drying web-shaped material |
| DE975392C (en) * | 1949-10-29 | 1961-11-16 | Lufttechnische Ges M B H | Drying device for metal strips painted on both sides |
| DE1095246B (en) * | 1953-09-02 | 1960-12-22 | Monforts Fa A | Device for the continuous treatment, in particular drying, of web-like goods |
| GB1019591A (en) * | 1961-01-28 | 1966-02-09 | Spooner Dryer & Eng Co Ltd | Improvements in or relating to forced convection |
| FR1340311A (en) * | 1962-09-06 | 1963-10-18 | Chantiers De Nantes Atel | Device for drying flexible strips moved longitudinally |
| DE1292082B (en) * | 1963-11-16 | 1969-04-03 | Kalle Ag | Method and device for treating, in particular drying, free-floating, band-shaped material |
| DE1629029A1 (en) * | 1965-03-09 | 1971-01-14 | Erich Pagendarm | Nozzle dryer with frictionless web guide |
| DE1785111A1 (en) * | 1968-08-10 | 1972-02-10 | Famatex Gmbh Fabrik Fuer Texti | Device for ventilating material webs |
| DE2039500A1 (en) * | 1969-07-08 | 1972-02-10 | Ruthner Ind Planungs Ag | Method and device for guiding panels or endless belts through containers formed from shallow channels |
| DE2502367A1 (en) * | 1974-06-10 | 1975-12-18 | Montini Prodotti Tessili S A S | Drying installation partic for fabric lengths - has zoned chamber construction for hot air and radiant heat circulation |
| DE2556442A1 (en) * | 1975-12-15 | 1977-06-23 | Kramer Carl | METHOD FOR FLOATING GUIDANCE OF TRACKS AND DEVICE FOR IMPLEMENTING THE METHOD |
| DE2615258A1 (en) * | 1976-04-08 | 1977-10-20 | Vits Maschinenbau Gmbh | Air cushion strip transport equipment - has slots in nozzles at steeper angle on one side than other |
| US4060914A (en) * | 1976-08-18 | 1977-12-06 | Proctor & Schwartz, Inc. | Apparatus for treating material with a gaseous medium |
| DE2647963A1 (en) * | 1976-10-22 | 1978-04-27 | Brueckner Apparatebau Gmbh | Textile strip delivery mechanism to conveyor - uses air jets with components in travel direction and towards edges |
| DE3111744A1 (en) * | 1980-03-28 | 1982-01-07 | Valmet Oy, 001300 Helsinki | PRESSURE PRESSURE NOZZLE FOR TREATING RAIL-SHAPED MATERIAL |
| GB2088426A (en) * | 1980-11-28 | 1982-06-09 | Primatex Machinery Private Ltd | Drying wet textile fabrics |
| US4455136A (en) * | 1981-06-29 | 1984-06-19 | Chugai Ro Co., Ltd. | Floating equipment and floating-type heat treating furnace for striplike works |
| GB2116510A (en) * | 1982-03-15 | 1983-09-28 | Grace W R & Co | Compact air bar assembly for contactless web support |
| US4698914A (en) * | 1986-05-29 | 1987-10-13 | E. I. Du Pont De Nemours And Company | Setting/drying process for flexible web coating |
| EP0448983A2 (en) * | 1990-03-30 | 1991-10-02 | Wsp Ingenieurgesellschaft Für Wärmetechnik, Strömungstechnik Und Prozesstechnik Mit Beschränkter Haftung | Apparatus for blowing onto the two sides of a web-like material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19536352A1 (en) * | 1995-09-29 | 1997-04-10 | Peter Dipl Ing Gellrich | Contact-free guiding and handling of continuous material web |
| DE19536352C2 (en) * | 1995-09-29 | 1999-07-15 | Peter Dipl Ing Gellrich | Device for guiding and treating a continuous material web |
| DE10238765A1 (en) * | 2002-08-23 | 2004-03-04 | Voith Paper Patent Gmbh | Arrangement for contactless guiding and / or deflecting and / or handling a running material web, in particular made of paper or cardboard, and built-in module for building up such an arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE144041T1 (en) | 1996-10-15 |
| DE4229804A1 (en) | 1994-03-10 |
| EP0586784B1 (en) | 1996-10-09 |
| DE59304107D1 (en) | 1996-11-14 |
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