EP1180231B1 - Dryer for goods in strip or panel form - Google Patents

Dryer for goods in strip or panel form Download PDF

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Publication number
EP1180231B1
EP1180231B1 EP00920488A EP00920488A EP1180231B1 EP 1180231 B1 EP1180231 B1 EP 1180231B1 EP 00920488 A EP00920488 A EP 00920488A EP 00920488 A EP00920488 A EP 00920488A EP 1180231 B1 EP1180231 B1 EP 1180231B1
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EP
European Patent Office
Prior art keywords
dryer
drying
cross
nozzle
strip
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EP00920488A
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German (de)
French (fr)
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EP1180231A1 (en
Inventor
Rudi Philipp
Burkhard Behrendt
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Grenzebach BSH GmbH
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Grenzebach BSH GmbH
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • 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

Definitions

  • the invention relates to a dryer for strip or plate-shaped material, in particular a multi-floor dryer for plasterboard or veneer, according to the generic term of claim 1 or claim 2.
  • WO 84/01424 describes a device for heating or cooling food, with a fan, nozzle boxes and a conveyor belt in an outer housing are arranged.
  • the fan is located in a short distance in front of the nozzle boxes, that its axis of rotation is approximately centered between the nozzle boxes.
  • the pressure room between the fan and the inlet opening of the nozzle boxes is one inner housing limited.
  • the guide body protrudes far in with one edge the pressure chamber, so that the distance of this edge to the fan is only about one corresponds to a quarter of the width of the print room.
  • Such a guide body is for the invention Tumble dryer not suitable.
  • the invention is based on the dryer known from DE 197 01 426 A1 in which even drying is achieved across the entire width of the crop should. This is largely achieved in that the distance between the nozzles Guts Type is adjustable at least at one end of the nozzle box and on both ends are different sizes. However, it has been shown that the drying on the side of the air inlet in the nozzle box is less than the rest Length of the nozzle box. Studies have shown that in the area behind the Air intake in the jet box swirls occur. These arise due to the compact design of the dryer, which has a relatively high, vertically directed Flow velocity in the pressure chamber in front of the nozzle boxes.
  • the Speed in the area of the air inlet in the nozzle box next to the horizontal also a vertical component, which causes the turbulence.
  • This in practice means that drying must take entire property to ensure the maximum permissible residual moisture. This means more Energy can be used for drying than under optimal conditions required.
  • the object of the invention is to provide a dryer with the specified in the preamble To create features that also on the side of the air inlet in the nozzle box uniform drying with improved energy utilization is achieved.
  • the dryer is e.g. from a multitude of modularly lined up Compartments.
  • a compartment measures 2.0 m to 2.5 m in the conveying direction and is 2.5 m to 6.0 m wide. As can be seen from Figures 1 and 2, it has a ceiling 1 and side walls 2, 3.
  • a core area 7 separated from a circulating air duct. This exists from a horizontal channel 8 over the core area 7, a lateral vertical Pressure chamber 9 and one on the opposite side essentially Collection channel 10 arranged in mirror symmetry.
  • the width of the core region 7 is about 50 to 70% of the total width, the height is about 60 to 80% of the total height.
  • rollers 22 arranged on one side on the partition 5 and on the others are stored in the support frame 6. All roles 22 are not shown Gears and chains can be driven at the same speed and form in each Level a roller conveyor that extends the entire length of the dryer.
  • One end of the nozzle box 12 is designed as an inflow opening 13, the other End 14 is closed.
  • the nozzle boxes 12 are wedge-shaped, so that you Cross section decreases steadily in the direction of the closed end 14.
  • the end with the inflow opening 13 is suitable in a rectangular recess of the partition 5 attached.
  • the guide bodies 20 extend over the entire length of the partition 5.
  • the vertical extension H of the guide body 20 in the immediate area of the partition 5 corresponds exactly to the distance between the upper limit of the inflow opening 13 of a nozzle box 12 and the lower limit of the inflow opening 13 of the immediately above Nozzle box 12. Therefore there is a guide body 20 with respect to the inflow opening 13 cross-sectionally neutral, that is, the cross section of the inflow opening 13 is not changed.
  • the length L with which a guide body 20 projects into the pressure chamber 9 is 60 mm to 100 mm, preferably 60 mm to 80 mm.
  • a fan 15 is attached to the side wall 2, with a Motor 16 is drivable.
  • the suction side of the fan 15 is to the collecting duct 10 open.
  • the pressure side of the fan 15 is connected to a diffuser 17, which in the horizontal channel 8 opens.
  • a heat exchanger 18 is arranged on the side of the horizontal channel 8.
  • the collecting channel 10 and the horizontal channel 8 are separated from each other by a wall 19.
  • the invention can also be used in other dryers in which, owing to the compact design disturbing turbulence when entering the nozzle box arise, e.g. for belt dryers. Instead of a number of Transport systems be arranged a meandering belt. This occurs the problem of turbulence increases with increasing number of floors Appearance, that is, especially in plasterboard dryers, where up to twelve Floors are known.
  • a guide body 20 extends in each case across the width of the inflow opening 13 of a nozzle box 12.
  • an upper nozzle box 12 and one immediately below the nozzle box 12 connected like pants so that both form a double box and have a common inflow opening 13.
  • the fan 15 sucks drying air from the collecting duct 10 and presses it through the diffuser 17 into the horizontal channel 8 in the direction of the arrow 21.
  • the drying air flows through the heat exchanger 18, is heated and flows into pressure chamber 9.
  • the flow is from top to bottom directed and must in an approximation when flowing into the nozzle boxes 12 horizontal flow are diverted here, which cause pressure chamber 9 protruding guide body extensive alignment of the flow lines, so that a Vortex formation is avoided.
  • the drying air is released from the nozzles onto the surface blown the drying material 11, takes up water and flows into the Collection duct 10, from where it is sucked back into the circuit to the fan 15. Part of the drying air, which corresponds approximately to the amount of water evaporated, is removed from the cycle.
  • the guide body 20 shown in cross section in FIG. 3 according to claim 2 is preferred used in dryers for peeled veneer. He's kind of a bit after here finger curved at the top
  • the cross section of a guide body is geometrical 20 composed of two circle segments with non-identical centers.
  • the radius R1 of the upper circle segment 23 is 180 mm to 220 mm, preferably 190 mm to 210 mm; the radius R2 of the lower circle segment 24 is 80 mm to 120 mm, preferably 90 mm to 100 mm.
  • the guide body 26 shown in cross section in FIG. 4 according to claim 3 is preferred used in dryers for plasterboard.
  • the guide body 26 has here Shape of a rectangle with an attached semicircle, the round side in the Pressure chamber 9 protrudes.

Abstract

In known rack dryers, the drying effect is weaker in the outer area on the side of the air intake into the pipe chambers than in the other areas. Said weaker drying effect is caused by turbulence in this area, which leads to a drop in the static pressure. The aim of the invention is to provide a dryer which ensures even drying of the goods across the entire width, even in the problem areas. The rack dryer is equipped with conductive bodies (20, 26) which are located on the partition wall (5) and which streamline the current in the area of the air intake into the pipe chambers in such a way, that a predominantly even static pressure prevails throughout the entire pipe chamber. The invention can be used for drying sandwich-type plaster board or wood veneer.

Description

Die Erfindung betrifft einen Trockner für band- oder plattenförmiges Gut, insbesondere einen Mehretagentrockner für Gipskartonplatten oder Furniere, gemäß dem Oberbegriff des Anspruchs 1 bzw. des Anspruchs 2.The invention relates to a dryer for strip or plate-shaped material, in particular a multi-floor dryer for plasterboard or veneer, according to the generic term of claim 1 or claim 2.

Aus Kröll, Trockner und Trocknungsverfahren, Springer 1959, S. 75 ff. ist ein Trockner mit einer Verteilwand mit halbrunden Luftleitkörpern bekannt, die an der Lufteintrittseite der Kammern eines Kammertrockners angeordnet ist. Die Verteilwand verengt den Zuströmquerschnitt zu den Kammern, erhöht so den Druck im Druckraum und führt zu einer gleichmäßigen Luftverteilung auf die einzelnen Kammern. Eine gleichmäßige Strömung in den Kammern selbst wird nicht erzielt. Ein Kammertrockner zählt nicht zur gattungsbildenden Art.From Kröll, dryer and drying process, Springer 1959, p. 75 ff. Is a dryer known with a distribution wall with semicircular air baffles on the air inlet side the chambers of a chamber dryer is arranged. The distribution wall narrows the Inflow cross-section to the chambers, increases the pressure in the pressure chamber and leads to an even air distribution over the individual chambers. An even flow is not achieved in the chambers themselves. A chamber dryer is not included generic type.

Aus der WO 84/01424 ist eine Vorrichtung zum Heizen oder Kühlen von Lebensmitteln, bei dem in einem äußeren Gehäuse ein Ventilator, Düsenkästen und ein Transportband angeordnet sind. Der Ventilator ist in kurzer Entfernung vor den Düsenkästen so angeordnet, daß seine Drehachse in etwa mittig zwischen den Düsenkästen ist. Der Druckraum zwischen dem Ventilator und der Einlaßöffnung der Düsenkästen ist von einem inneren Gehäuse begrenzt. Zwischen den oberen und unteren Düsenkästen ist ein walmdach-förmiger Leitkörper angeordnet. Der Leitkörper ragt mit einer Kante weit in den Druckraum, so daß die Entfernung dieser Kante zum Ventilator nur circa einem viertel der Breite des Druckraumes entspricht. Ein solcher Leitkörper ist fürerfindungsgemäße Trockner nicht geeignet.WO 84/01424 describes a device for heating or cooling food, with a fan, nozzle boxes and a conveyor belt in an outer housing are arranged. The fan is located in a short distance in front of the nozzle boxes, that its axis of rotation is approximately centered between the nozzle boxes. The pressure room between the fan and the inlet opening of the nozzle boxes is one inner housing limited. There is a between the upper and lower nozzle boxes arranged in the form of a hipped roof. The guide body protrudes far in with one edge the pressure chamber, so that the distance of this edge to the fan is only about one corresponds to a quarter of the width of the print room. Such a guide body is for the invention Tumble dryer not suitable.

Die Erfindung geht von dem aus der DE 197 01 426 A1 bekannt gewordenen Trockner aus, bei dem eine gleichmäßige Trocknung über die gesamte Gutsbreite erzielt werden soll. Dies wird weitgehend dadurch erreicht, daß der Abstand der Düsen zur Gutsoberfläche zumindest an einem Ende des Düsenkastens einstellbar ist und an beiden Enden unterschiedlich groß ist. Es hat sich jedoch gezeigt, daß die Trocknung auf der Seite des Lufteintrittes in den Düsenkasten geringer ist als über die restliche Länge des Düsenkastens. Untersuchungen haben ergeben, daß im Bereich hinter dem Lufteintritt in den Düsenkasten Verwirbelungen auftreten. Diese entstehen aufgrund der kompakten Bauweise des Trockners, die eine relativ hohe, vertikal gerichtete Strömungsgeschwindigkeit im Druckraum vor den Düsenkästen bewirkt. Daher hat die Geschwindigkeit im Bereich des Lufteintrittes in den Düsenkasten neben der horizontalen auch eine vertikale Komponente, welche die Verwirbelungen bewirkt. Dies bedeutet für die Praxis, daß insgesamt länger getrocknet werden muß, um über das gesamte Gut die maximal zulässige Restfeuchte zu gewährleisten. Hierdurch muß mehr Energie für die Trocknung eingesetzt werden als unter optimalen Bedingungen erforderlich.The invention is based on the dryer known from DE 197 01 426 A1 in which even drying is achieved across the entire width of the crop should. This is largely achieved in that the distance between the nozzles Gutsfläche is adjustable at least at one end of the nozzle box and on both ends are different sizes. However, it has been shown that the drying on the side of the air inlet in the nozzle box is less than the rest Length of the nozzle box. Studies have shown that in the area behind the Air intake in the jet box swirls occur. These arise due to the compact design of the dryer, which has a relatively high, vertically directed Flow velocity in the pressure chamber in front of the nozzle boxes. Therefore, the Speed in the area of the air inlet in the nozzle box next to the horizontal also a vertical component, which causes the turbulence. This in practice means that drying must take entire property to ensure the maximum permissible residual moisture. This means more Energy can be used for drying than under optimal conditions required.

Aufgabe der Erfindung ist es, einen Trockner mit den im Oberbegriff angegebenen Merkmalen zu schaffen, bei dem auch auf der Seite des Lufteintrittes in den Düsenkasten eine gleichmäßige Trocknung bei verbesserter Energieausnutzung erzielt wird.The object of the invention is to provide a dryer with the specified in the preamble To create features that also on the side of the air inlet in the nozzle box uniform drying with improved energy utilization is achieved.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 bzw. durch die Merkmale des Anspruchs 2 gelöst. Durch den Einsatz der Erfindung entsteht eine gleichmäßig gerichtete Strömung ohne nennenswerte Verwirbelungen auch im Bereich des Lufteintrittes in den Düsenkasten. Im Düsenkasten herrschen hierdurch weitgehend gleiche Druckverhältnisse, so daß die Trocknungsluft bei allen Düsen gleichmäßig austreten kann.This object is achieved by the features of claim 1 or by the features of claim 2 solved. The use of the invention creates a uniformly directed flow without noteworthy turbulence also in the area of the air inlet in the nozzle box. As a result, the pressure conditions in the nozzle box are largely the same, so that the drying air can escape evenly from all nozzles.

Die Zeichnungen dienen der Erläuterung der Erfindung anhand vereinfacht dargestellter Beispiele.

Figur 1
zeigt den Querschnitt eines erfindungsgemäßen Trockners.
Figur 2
zeigt einen Längsschnitt mit Ansicht auf die Trennwand
Figur 3
zeigt einen Leitkörper nach Anspruch 2 als Einzelheit.
Figur 4
zeigt einen Leitkörper nach Anspruch 3 als Einzelheit.
The drawings serve to explain the invention with reference to simplified examples.
Figure 1
shows the cross section of a dryer according to the invention.
Figure 2
shows a longitudinal section with a view of the partition
Figure 3
shows a guide body according to claim 2 as a detail.
Figure 4
shows a guide body according to claim 3 as a detail.

Der Trockner besteht z.B. aus einer Vielzahl baukastenartig aneinandergereihten Abteilen. Ein Abteil mißt in Förderrichtung 2,0 m bis 2,5 m und ist 2,5 m bis 6,0 m breit. Wie aus den Figuren 1 und 2 ersichtlich ist, hat es eine Decke 1 und Seitenwände 2, 3.The dryer is e.g. from a multitude of modularly lined up Compartments. A compartment measures 2.0 m to 2.5 m in the conveying direction and is 2.5 m to 6.0 m wide. As can be seen from Figures 1 and 2, it has a ceiling 1 and side walls 2, 3.

In dem Abteil ist durch eine Zwischendecke 4, eine Trennwand 5 und ein gitterartiges Traggestell 6 ein Kernbereich 7 von einem Umluftkanal abgetrennt. Dieser besteht aus einem waagerechten Kanal 8 über dem Kernbereich 7, einem seitlichen senkrechten Druckraum 9 und einem auf der gegenüberliegenden Seite im wesentlichen spiegelsymmetrisch angeordneten Sammelkanal 10. Die Breite des Kernbereichs 7 beträgt etwa 50 bis 70 % der Gesamtbreite, die Höhe etwa 60 bis 80 % der Gesamthöhe. Im Kernbereich 7 sind in mehreren, in der Praxis meist vier bis zwölf Ebenen, die in gleichen Abständen von circa 250 mm bis 350 mm etagenartig übereinander liegen, Rollen 22 angeordnet, die an der einen Seite an der Trennwand 5 und an der anderen in dem Traggestell 6 gelagert sind. Alle Rollen 22 sind über nicht dargestellte Zahnräder und Ketten mit der gleichen Geschwindigkeit antreibbar und bilden in jeder Etage einen Rollenförderer, der sich über die gesamte Länge des Trockners erstreckt.In the compartment is through a false ceiling 4, a partition 5 and a lattice Support frame 6, a core area 7 separated from a circulating air duct. This exists from a horizontal channel 8 over the core area 7, a lateral vertical Pressure chamber 9 and one on the opposite side essentially Collection channel 10 arranged in mirror symmetry. The width of the core region 7 is about 50 to 70% of the total width, the height is about 60 to 80% of the total height. In core area 7 there are several, in practice mostly four to twelve levels, that at equal intervals of approx. 250 mm to 350 mm on top of each other lie, rollers 22 arranged on one side on the partition 5 and on the others are stored in the support frame 6. All roles 22 are not shown Gears and chains can be driven at the same speed and form in each Level a roller conveyor that extends the entire length of the dryer.

Unterhalb und oberhalb der Transportebenen, in denen sich das auf den einzelnen Rollenförderern liegende Trocknungsgut 11 kontinuierlich durch den Trockner bewegt, sind in den Zwischenräumen nebeneinander liegender Rollen 22 fingerartige Düsenkästen 12 angeordnet, die sich über die Breite des Rollenförderers erstrecken. Die der Transportebene zugekehrte Begrenzungswand des Düsenkastens 12 ist mit Düsenöffnungen zum Aufblasen von Trocknungsluft auf das Trocknungsgut 11 versehen. Below and above the transport levels, in which the individual Drying material 11 lying on roller conveyors is continuously moved through the dryer, are 22 finger-like nozzle boxes in the spaces between adjacent rollers 12 arranged, which extend across the width of the roller conveyor. The the Transport plane facing boundary wall of the nozzle box 12 is with nozzle openings provided for inflating drying air onto the drying material 11.

Ein Ende des Düsenkastens 12 ist als Einströmöffnung 13 ausgebildet, das andere Ende 14 ist geschlossen. Die Düsenkästen 12 sind keilförmig ausgebildet, so daß ihr Querschnitt in Richtung auf das geschlossene Ende 14 stetig abnimmt. Das Ende mit der Einströmöffnung 13 ist passend in einer rechteckigen Ausnehmung der Trennwand 5 befestigt.One end of the nozzle box 12 is designed as an inflow opening 13, the other End 14 is closed. The nozzle boxes 12 are wedge-shaped, so that you Cross section decreases steadily in the direction of the closed end 14. The end with the inflow opening 13 is suitable in a rectangular recess of the partition 5 attached.

An der Trennwand 5 sind zwischen zwei vertikal benachbarten Düsenkästen 12 Leitkörper 20 angeordnet. Diese ragen in den Druckraum 9. Die Leitkörper 20 erstrecken sich über die gesamte Länge der Trennwand 5. Die vertikale Ausdehnung H der Leitkörper 20 im unmittelbaren Bereich der Trennwand 5 entspricht genau dem Abstand zwischen der oberen Begrenzung der Einströmöffnung 13 eines Düsenkastens 12 und der unteren Begrenzung der Einströmöffnung 13 des unmittelbar darüber angeordneten Düsenkastens 12. Daher ist ein Leitkörper 20 bezüglich der Einströmöffnung 13 querschnittsneutral, das heißt, der Querschnitt der Einströmöffnung 13 wird nicht verändert. Die Länge L, mit der ein Leitkörper 20 in den Druckraum 9 ragt, beträgt 60 mm bis 100 mm, vorzugsweise 60 mm bis 80 mm.On the partition 5 there are 12 guide bodies between two vertically adjacent nozzle boxes 20 arranged. These protrude into the pressure chamber 9. The guide bodies 20 extend over the entire length of the partition 5. The vertical extension H of the guide body 20 in the immediate area of the partition 5 corresponds exactly to the distance between the upper limit of the inflow opening 13 of a nozzle box 12 and the lower limit of the inflow opening 13 of the immediately above Nozzle box 12. Therefore there is a guide body 20 with respect to the inflow opening 13 cross-sectionally neutral, that is, the cross section of the inflow opening 13 is not changed. The length L with which a guide body 20 projects into the pressure chamber 9 is 60 mm to 100 mm, preferably 60 mm to 80 mm.

Im Sammelkanal 10 ist an der Seitenwand 2 ein Ventilator 15 befestigt, der mit einem Motor 16 antreibbar ist. Die Saugseite des Ventilators 15 ist zum Sammelkanal 10 offen. Die Druckseite des Ventilators 15 ist mit einem Diffusor 17 verbunden, der in den waagerechten Kanal 8 mündet. An der dem Ventilator 15 gegenüberliegenden Seite des waagerechten Kanals 8 ist ein Wärmtetauscher 18 angeordnet. Der Sammelkanal 10 und der waagerechte Kanal 8 sind durch eine Wand 19 voneinander getrennt.In the collecting duct 10, a fan 15 is attached to the side wall 2, with a Motor 16 is drivable. The suction side of the fan 15 is to the collecting duct 10 open. The pressure side of the fan 15 is connected to a diffuser 17, which in the horizontal channel 8 opens. On the fan 15 opposite A heat exchanger 18 is arranged on the side of the horizontal channel 8. The collecting channel 10 and the horizontal channel 8 are separated from each other by a wall 19.

Die Erfindung ist auch bei anderen Trocknern einsetzbar, bei denen aufgrund der kompakten Bauweise störende Verwirberlungen beim Eintritt in den Düsenkasten entstehen, z.B. bei Bandtrocknern. Bei diesen kann anstatt einer Anzahl von Transportsystemen ein mäanderförmig geführtes Band angeordnet sein. Dabei tritt das Problem der Verwirbelungen mit zunehmender Zahl an Etagen stärker in Erscheinung, das heißt, besonders bei Gipskartonplatten- Trocknern, wo bis zu zwölf Etagen bekannt sind.The invention can also be used in other dryers in which, owing to the compact design disturbing turbulence when entering the nozzle box arise, e.g. for belt dryers. Instead of a number of Transport systems be arranged a meandering belt. This occurs the problem of turbulence increases with increasing number of floors Appearance, that is, especially in plasterboard dryers, where up to twelve Floors are known.

Bei einer anderen Ausführung des Trockners ist anstatt des Wärmetauschers 18 eine direkte Beheizung der Trocknungsluft mit einem Brenner installiert.In another embodiment of the dryer, one is instead of the heat exchanger 18 direct heating of the drying air installed with a burner.

Bei einer anderen Ausführung der Erfindung erstreckt sich ein Leitkörper 20 jeweils über die Breite der Einströmöffnung 13 eines Düsenkastens 12. In another embodiment of the invention, a guide body 20 extends in each case across the width of the inflow opening 13 of a nozzle box 12.

In einer Ausführung des Trockners für Gipskartonplatten sind vorzugsweise zwischen zwei benachbarten Transportebenen jeweils ein oberer Düsenkasten 12 und ein unmittelbar darunterliegender Düsenkasten 12 hosenartig so verbunden, daß beide einen Doppelkasten bilden und eine gemeinsame Einströmöffnung 13 haben.In one embodiment of the dryer for plasterboard, preferably between two adjacent transport levels, an upper nozzle box 12 and one immediately below the nozzle box 12 connected like pants so that both form a double box and have a common inflow opening 13.

Im Betrieb saugt der Ventilator 15 Trocknungsluft aus dem Sammelkanal 10 und drückt sie durch den Diffusor 17 in den waagerechten Kanal 8 in Richtung des Pfeiles 21. Am Ende dieses Kanals 8 durchstromt die Trocknungsluft den Wärmetauscher 18, wird erhitzt und fließt in den Druckraum 9. Die Strömung ist hier von oben nach unten gerichtet und muß bei der Einstromung in die Düsenkästen 12 in eine annähernd horizontale Strömung umgelenkt werden Hierbei bewirken die in den Druckraum 9 ragenden Leitkörper eine weitgehende Austichtung der Strömungslinien, so daß eine Wirbelbildung vermieden wird. Die Trocknungsluft wird aus den Düsen auf die Oberfläche des Trocknungsgutes 11 geblasen, nimmt hierbei Wasser auf und strömt in den Sammelkanal 10, von wo sie wieder in den Kreislauf zum Ventilator 15 gesaugt wird. Ein Teil der Trocknungsluft, der in etwa der verdampften Wassermenge entspricht, wird aus dem Kreislauf ausgeschleust.In operation, the fan 15 sucks drying air from the collecting duct 10 and presses it through the diffuser 17 into the horizontal channel 8 in the direction of the arrow 21. At the end of this channel 8, the drying air flows through the heat exchanger 18, is heated and flows into pressure chamber 9. The flow here is from top to bottom directed and must in an approximation when flowing into the nozzle boxes 12 horizontal flow are diverted here, which cause pressure chamber 9 protruding guide body extensive alignment of the flow lines, so that a Vortex formation is avoided. The drying air is released from the nozzles onto the surface blown the drying material 11, takes up water and flows into the Collection duct 10, from where it is sucked back into the circuit to the fan 15. Part of the drying air, which corresponds approximately to the amount of water evaporated, is removed from the cycle.

Der in Figur 3 im Querschnitt dargestellte Leitkorper 20 nach Anspruch 2 ist vorzugsweise in Trocknern für Schälfurnier eingesetzt. Er ist hier nach Art eines leicht nach oben gekrümmten Fingers ausgebildet Geometrisch ist der Querschnitt eines Leitkörpers 20 aus zwei Kreissegmenten mit nicht identischen Mittelpunkten zusammengesetzt. Der Radius R1 des oberen Kreissegmentes 23 beträgt 180 mm bis 220 mm, vorzugsweise 190 mm bis 210 mm; der Radius R2 des unteren Kreissegmentes 24 beträgt 80 mm bis 120 mm, vorzugsweise 90 mm bis 100 mm.The guide body 20 shown in cross section in FIG. 3 according to claim 2 is preferred used in dryers for peeled veneer. He's kind of a bit after here finger curved at the top The cross section of a guide body is geometrical 20 composed of two circle segments with non-identical centers. The radius R1 of the upper circle segment 23 is 180 mm to 220 mm, preferably 190 mm to 210 mm; the radius R2 of the lower circle segment 24 is 80 mm to 120 mm, preferably 90 mm to 100 mm.

Bei einer anderen Ausführung des Leitkörpers 20 ist anstelle des spitzen Endes 25 eine Abrundung mit einem Radius von 10 mm bis 15 mm eingesetzt.In another embodiment of the guide body 20, 25 is used instead of the pointed end a rounding with a radius of 10 mm to 15 mm is used.

Der in Figur 4 im Querschnitt dargestellte Leitkörper 26 nach Anspruch 3 ist vorzugsweise in Trocknern für Gipskartonplatten eingesetzt. Der Leitkörper 26 hat hier die Form eines Rechteckes mit angesetztem Halbkreis, wobei die runde Seite in den Druckraum 9 ragt.The guide body 26 shown in cross section in FIG. 4 according to claim 3 is preferred used in dryers for plasterboard. The guide body 26 has here Shape of a rectangle with an attached semicircle, the round side in the Pressure chamber 9 protrudes.

Claims (2)

  1. A dryer for material in strip or panel form, especially a multistage dryer for gypsum plaster boards or veneers,
    comprising feed devices, in particular roller or belt conveyors,
    comprising nozzle boxes (12) which extend over the width of the feed devices, have an inflow opening (13) at one end and are closed at the other end (14), and are provided with nozzle openings for blowing drying air onto at least one side of the material passing through,
    and comprising flow-enhancing, cross-sectionally neutral deflectors (20, 26) between the inflow ends of two vertically adjacent nozzle boxes (12), characterised in that the deflector (20) has a cross-section in the form of a slightly upwardly bent finger.
  2. A dryer for material in strip or panel form, especially a multistage dryer for gypsum plaster boards or veneers,
    comprising feed devices, in particular roller or belt conveyors,
    comprising nozzle boxes (12) which extend over the width of the feed devices, have an inflow opening (13) at one end and are closed at the other end (14), and are provided with nozzle openings for blowing drying air onto at least one side of the material passing through,
    and comprising flow-enhancing, cross-sectionally neutral deflectors (20, 26) between the inflow ends of two vertically adjacent nozzle boxes (12), characterised in that the deflector (26) has a cross-section made up of a rectangle with an attached semi-circle.
EP00920488A 1999-05-12 2000-03-10 Dryer for goods in strip or panel form Expired - Lifetime EP1180231B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK00920488T DK1180231T3 (en) 1999-05-12 2000-03-10 Drying system for ribbon or plate material

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19922165 1999-05-12
DE19922165A DE19922165C2 (en) 1999-05-12 1999-05-12 Dryer for band or plate-shaped goods
PCT/EP2000/002139 WO2000070283A1 (en) 1999-05-12 2000-03-10 Dryer for goods in strip or panel form

Publications (2)

Publication Number Publication Date
EP1180231A1 EP1180231A1 (en) 2002-02-20
EP1180231B1 true EP1180231B1 (en) 2004-06-16

Family

ID=7908009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00920488A Expired - Lifetime EP1180231B1 (en) 1999-05-12 2000-03-10 Dryer for goods in strip or panel form

Country Status (11)

Country Link
US (1) US6581302B1 (en)
EP (1) EP1180231B1 (en)
JP (1) JP2002544468A (en)
AT (1) ATE269528T1 (en)
CA (1) CA2372752C (en)
DE (2) DE19922165C2 (en)
DK (1) DK1180231T3 (en)
ES (1) ES2220454T3 (en)
PT (1) PT1180231E (en)
TW (1) TW464753B (en)
WO (1) WO2000070283A1 (en)

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DE10146179C1 (en) * 2001-09-19 2002-10-31 Babcock Bsh Gmbh Drying oven for plasterboard panels used in building has set of roller conveyers and includes hot air nozzles at various drying stations
WO2004101238A2 (en) * 2003-05-12 2004-11-25 Coe Manufacturing Company Veneer dryer
US7448147B2 (en) * 2004-11-22 2008-11-11 Metso Paper Usa, Inc. Nozzle insert for a Yankee impingement hood
US20080168675A1 (en) * 2007-01-16 2008-07-17 Hamilton Beach/Proctor-Silex, Inc. Portable Clothes Dryer with Multiple Drying Shelves
US8061055B2 (en) * 2007-05-07 2011-11-22 Megtec Systems, Inc. Step air foil web stabilizer
EP2741037A1 (en) * 2012-12-05 2014-06-11 Saint-Gobain Placo SAS Drying system
CN103009473B (en) * 2012-12-13 2014-12-17 浙江皇铭新型建材科技有限公司 Wall body maintenance control-type cooling rack
KR101974033B1 (en) * 2015-06-03 2019-05-07 한국에너지기술연구원 Thermal Alternating Heat Pump Drying System Having Changeable Guide Vane
CN106091656B (en) * 2016-06-21 2019-06-25 特一（上海）新材料有限公司 Oven interior air channel structure
CN107726806A (en) * 2017-10-19 2018-02-23 李常青 A kind of plank drying plant
DE102018002073A1 (en) * 2018-03-15 2019-09-19 Grenzebach Bsh Gmbh Nozzle box for a drying device for drying plasterboard
DE102018002074A1 (en) * 2018-03-15 2019-09-19 Grenzebach Bsh Gmbh Drying device for drying plasterboard
DE102018002107A1 (en) * 2018-03-15 2019-09-19 Grenzebach Bsh Gmbh Method and apparatus for drying plasterboard
KR102003041B1 (en) * 2018-11-20 2019-07-24 주식회사 조은바람 Control method of air cleaning equipment
CN111504017A (en) * 2020-04-30 2020-08-07 台州市勒言自动化科技有限公司 Agricultural and sideline products stoving box
DE102020004454A1 (en) * 2020-07-23 2022-01-27 Grenzebach Bsh Gmbh Dryer for drying a panel-shaped product
CN113043442A (en) * 2021-03-20 2021-06-29 胡旭 Modular building wall machining system and method

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Also Published As

Publication number Publication date
US6581302B1 (en) 2003-06-24
EP1180231A1 (en) 2002-02-20
PT1180231E (en) 2004-09-30
DK1180231T3 (en) 2004-11-01
ES2220454T3 (en) 2004-12-16
DE19922165C2 (en) 2001-08-30
CA2372752A1 (en) 2000-11-23
JP2002544468A (en) 2002-12-24
DE19922165A1 (en) 2000-11-23
TW464753B (en) 2001-11-21
DE50006827D1 (en) 2004-07-22
CA2372752C (en) 2006-12-05
WO2000070283A1 (en) 2000-11-23
ATE269528T1 (en) 2004-07-15

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