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EP0266516A2 - Dryer, in particular for the chemical industry - Google Patents

Dryer, in particular for the chemical industry Download PDF

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Publication number
EP0266516A2
EP0266516A2 EP87113091A EP87113091A EP0266516A2 EP 0266516 A2 EP0266516 A2 EP 0266516A2 EP 87113091 A EP87113091 A EP 87113091A EP 87113091 A EP87113091 A EP 87113091A EP 0266516 A2 EP0266516 A2 EP 0266516A2
Authority
EP
European Patent Office
Prior art keywords
chamber
housing
drying chamber
dryer according
dryer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87113091A
Other languages
German (de)
French (fr)
Other versions
EP0266516A3 (en
Inventor
Günter Wulf
Heinz Geisenhof
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hermann Waldner GmbH and Co KG
Original Assignee
Hermann Waldner GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hermann Waldner GmbH and Co KG filed Critical Hermann Waldner GmbH and Co KG
Publication of EP0266516A2 publication Critical patent/EP0266516A2/en
Publication of EP0266516A3 publication Critical patent/EP0266516A3/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
    • F26B9/066—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers the products to be dried being disposed on one or more containers, which may have at least partly gas-previous walls, e.g. trays or shelves in a stack
    • 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
    • F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
    • 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
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity
    • F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle

Definitions

  • the invention relates to a dryer, in particular for the chemical industry with the features of the preamble of claim 1.
  • Such a dryer is known from EP publication 60 212.
  • the fan cage in the ceiling part of the housing protrudes directly into the drying chamber and sucks in the gas flow from it.
  • the gas flow from the fan basket in the ceiling section as the main flow along the rear wall of the drying chamber is pushed downwards past the cover plate at the rear of the loading trolley.
  • the rear wall of the drying chamber is equipped with a heating device.
  • the main gas flow then flows through the loading trolley in the longitudinal direction.
  • In the ceiling part there is also a control device in the pressure-side chamber, which presses a secondary flow into the drying chamber along the side walls, on which condensers are located. Uncondensed parts of the secondary flow are sucked back by the fan on the intake side.
  • This dryer is very complicated according to its application and the resulting requirements.
  • the secondary gas flow is fed directly to the condensers, the gas flow heat imparted by the fan not being reduced by the material to be dried.
  • the invention has for its object to provide a simpler and more versatile dryer, which also enables better energy efficiency.
  • the invention offers the advantage that the gas stream is led over the goods to be dried as a largely laminar total stream without sharp deflections, as a result of which thermal energy is withdrawn. This reduces the energy required for cooling down and condensing.
  • the pressure-side and suction-side chambers in the ceiling part and the housing ensure a calming of the gas flow.
  • the entrained dust particles and the like can be retained by using filters.
  • an overpressure and a negative pressure are generated by the fan on the pressure side and suction side, which makes it possible to provide air inlets or gas outlets in the corresponding ceiling parts.
  • the loading trolley is kept free of baffles, it can be easily assembled. It is preferably constructed as a frame and is therefore free on all sides. With the dryer, both a recirculation mode and a fresh air mode are possible. Fresh air can be added to the desired extent in a controlled manner or a gas flow component can be discharged as exhaust air.
  • the dryer 1 has a housing 2 which is rectangular in cross section. This encloses a cuboid drying chamber 3.
  • the drying chamber 3 is delimited by the side walls 4, 5, the rear wall 6, the door 7, and the floor 8 and the ceiling 9.
  • a loading trolley 10 can be inserted into the cuboid drying chamber 3 through the door 7 and can fill the drying chamber 3 appropriately.
  • This carriage 10 has levels 11 supported by a frame, between which the trays (not shown) with the products to be dried can be inserted.
  • the dimensions of the trolley 10 provided with rollers 12, at least the side dimensions, are adapted to the cross section of the drying chamber 3.
  • the carriage 10 is at least open to the sides. However, the front and back are preferably also open.
  • the drying chamber 3 can also be designed so that it can accommodate several loading trolleys 10 side by side or one behind the other.
  • the side walls 4, 5 of the drying chamber 3 are formed by perforated sheets which are pivoted inwards for cleaning.
  • the holes 13 extend in rows of holes spaced apart from one another over the width of the side walls 4, 5. They extend in columns, at least over the height of the loading trolley 10.
  • the size of the holes 13 is dimensioned from row of holes to row of holes so that the the partial gas flows indicated by the arrows I in the transverse direction through the loading trolley 10 are approximately the same.
  • the side walls 4, 5 form with the housing side parts 14, 15 chambers 16, 17.
  • the top of the cuboid chambers 16, 17 can be closed off by filters 18, 19. Instead of filters, sheets, perforated sheets or the like which cause gas flow can also be present.
  • the other ends of the chambers 16, 17 form base parts 20, 21.
  • the side chambers 16, 17 with their side parts 14, 15, the side walls 4, 5, the filters 18, 19 and the bottom parts 20, 21 can be designed as separate building modules. They can be assembled in a constant size with drying chamber modules, the size of which is adapted to the respective application.
  • the housing 2 also has a ceiling part 22 which is firmly connected to the other housing parts.
  • the ceiling part 22 also has a rectangular plan. Its side walls continue housing parts 14, 15 upwards.
  • the cover part 22 has a housing part 23 which overlaps the filter 19 and the cover 9.
  • This housing part 23 is divided into a main chamber 25 and a secondary chamber 26 by a lying partition wall 24.
  • At least the main chamber 25 is provided with an adjustable, controllable flap 27 at its one entrance, via which gas flows in the direction indicated by the arrow.
  • a same flap can additionally be provided at the entrance to the secondary chamber 26.
  • a condenser 29 is arranged horizontally in the secondary chamber. This is formed by a pipe register through which cooling liquid flows. Below the condenser 29 there is a drip tray 30 for condensed water, which is only indicated schematically.
  • a gas outlet connection 31 with a control flap 32 is assigned to the space in front of the flap 27. If the flaps 27, 28 are closed, the entire gas flow can be discharged to the outside.
  • An outlet filter 33 can also be provided.
  • the chamber 25 opens upwards into an air inlet connection 34, which can be provided with a filter 35 and a control flap 36.
  • the required fresh air can be supplied via the connector 34 for "fresh air operation".
  • the chambers 25, 26 are provided on the suction side to form a fan basket 37 which is driven by an electric motor 38 and sucks gas in the direction of the arrow indicated via a suction opening 39, negative pressures arise in these. This enables controllable fresh air to be sucked in in the direction indicated by the arrow via the suction nozzle 34.
  • the suction opening 39 is followed by a housing part 40 which partially covers the housing part 23 and which surrounds the fan cage 37 and carries the electric motor 38. It continues into a pressure chamber 41 which widens in relation to the suction opening 39.
  • This pressure chamber 41 has in its downward chamber part a heating device 42. This is also formed by a tube register, which may be heated by superheated steam or the like.
  • the housing part 40 has an upward gas outlet connection 42, which is provided with a control flap 43 and optionally an outlet filter 44 for a gas outlet in the direction indicated by the arrow.
  • the dryer 1 is suitable both for "recirculation mode” and for operation with “partial or full fresh air”.
  • the dryer can be rendered inert, e.g. with nitrogen, which reduces the risk of explosion when drying, for example, products containing solvents.
  • the gas flow moved by the fan basket 37 into the large-sized pressure chamber 41 is heated via the heating device 42.
  • the easily removable filter 18 retains dust particles or the like entrained in the gas flow.
  • the gas stream flowing into the large-scale gas chamber 17 and being distributed there is distributed well via the side wall 4 formed by the perforated plate over the floors 11 and thus the goods to be dried in the loading trolley 10.
  • the temperature of the gas flow will vary between the tray plates carrying the goods lower the floors of the charging trolley 10 due to the evaporative cooling.
  • a gas bypass flow to the condenser 29 must be controlled.
  • the condensation power can be adjusted by the control flaps 27, 28.
  • the condenser 29 is preferably charged with cooling sole so that the temperature is reduced in advance.
  • the gas flow heating caused by the rotation of the fan cage 37 must also be taken into account in the dimensioning of the heating by the heating device 42. "Full fresh air operation" is also possible via the two stages 31 and 34, with fresh air replacing the circulated air quantity completely.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Der Trockner (1) sieht vor, daß im Deckenteil (22) druckseitig des Ventilators (37) eine Heizvorrichtung (45) mit Filter (18) und saugseitig in einer Nebenkammer (26) ein Kondensator (29) angebracht ist. Zusätzlich ist eine Hauptkammer (25) vorhanden. Im Trockner­gehäuse (2) sind Seitenkammern (16,17) vorhanden, deren Seitenwände (4,5) Lochbleche sind, die sich über die Höhe des Beschickungswagens (10) erstrekken. Der Trockner (1) ermöglich sowohl Umluft, wie auch Frischluftbetrieb.

Figure imgaf001
The dryer (1) provides for a heating device (45) with a filter (18) and a condenser (29) in the secondary part (22) on the pressure side of the fan (37) and on the suction side in a secondary chamber (26). There is also a main chamber (25). In the dryer housing (2) there are side chambers (16, 17), the side walls (4, 5) of which are perforated plates which extend over the height of the loading trolley (10). The dryer (1) enables recirculation as well as fresh air operation.
Figure imgaf001

Description

Die Erfindung betrifft einen Trockner, insbesondere für die chemische Industrie mit den Merkmalen des Oberbegriffs des Patentanspruchs 1.The invention relates to a dryer, in particular for the chemical industry with the features of the preamble of claim 1.

Ein derartiger Trockner ist aus der EP-Veröffentlichung 60 212 bekannt. Hierbei ragt der Lüfterkorb im Deckenteil des Gehäuses direkt in die Trockenkammer und saugt aus die­ser den Gasstrom an. Druckseitig wird der Gasstrom vom Lüf­terkorb im Deckenteil als Hauptstrom längs der Rückwand der Trockenkammer nach abwärts am Abdeckblech an der Rückseite des Beschickungswagens vorbeigedrückt Die Rückwand der Trockenkammer ist mit einer Heizvorrichtung ausgestattet. Der Gashauptstrom durchströmt dann den Beschickungswagen in Längsrichtung. Im Deckenteil ist ferner in der druckseitigen Kammer eine Steuervorrichtung vorhanden, die einen Neben­strom in die Trockenkammer längs den Seitenwänden drückt, an der sich Kondensatoren befinden. Nichtkondensierte Teile des Nebenstromes werden vom Lüfter ansaugseitig zurückgesaugt. Nachteilig ist, daß dieser Trockner entsprechend seinem An­wendungszweck und den dadurch auftretenden Forderungen sehr kompliziert aufgebaut ist. Ferner wird der Nebengasstrom di­rekt den Kondensatoren zugeführt, wobei die vom Lüfter ver­liehene Gasstromwärme nicht durch das zu trocknende Gut re­duziert wird.Such a dryer is known from EP publication 60 212. The fan cage in the ceiling part of the housing protrudes directly into the drying chamber and sucks in the gas flow from it. On the pressure side, the gas flow from the fan basket in the ceiling section as the main flow along the rear wall of the drying chamber is pushed downwards past the cover plate at the rear of the loading trolley. The rear wall of the drying chamber is equipped with a heating device. The main gas flow then flows through the loading trolley in the longitudinal direction. In the ceiling part there is also a control device in the pressure-side chamber, which presses a secondary flow into the drying chamber along the side walls, on which condensers are located. Uncondensed parts of the secondary flow are sucked back by the fan on the intake side. The disadvantage is that this dryer is very complicated according to its application and the resulting requirements. Furthermore, the secondary gas flow is fed directly to the condensers, the gas flow heat imparted by the fan not being reduced by the material to be dried.

Der Erfindung liegt die Aufgabe zugrunde, einen einfacheren und vielseitiger anwendbaren Trockner zu schaffen, der zudem noch eine bessere Energieausnutzung ermöglicht.The invention has for its object to provide a simpler and more versatile dryer, which also enables better energy efficiency.

Die Erfindung löst diese Aufgabe mit den kennzeichnenden Merkmalen des Patentanspruchs 1.The invention solves this problem with the characterizing features of patent claim 1.

Die Erfindung bietet den Vorteil, daß der Gasstrom ohne scharfe Umlenkungen als weitgehenst laminarer Gesamtstrom über die zu trocknenden Güter hinweggeführt wird, wodurch diesen Wärmeenergie entzogen wird. Dadurch wird die zum Her­unterkühlen und für das Kondensieren notwendige Energie ver­ringert. Außerdem sorgen die druckseitigen und saugseitigen Kammern im Deckenteil und Gehäuse für eine Beruhigung der Gasströmung. Durch Anwendung von Filtern können die mitge­rissenen Staubpartikelchen und dergleichen zurückgehalten werden. Zugleich wird druckseitig und ansaugseitig vom Lüf­ter ein Überdruck und ein Unterdruck erzeugt, wodurch es möglich wird, in den entsprechenden Deckenteilen Luftzu­tritte bzw. Gasaustritte vorzusehen. Da der Beschickungswa­gen von Umlenkblechen freigehalten wird, kann er einfach aufgebaut werden. Vorzugsweise ist er als Rahmen aufgebaut und dadurch allseitig frei. Mit dem Trockner ist sowohl ein Umluftbetrieb wie auch ein Frischluftbetrieb möglich. Es kann gesteuert Frischluft in gewünschtem Maße zugesetzt bzw. ein Gasstromanteil als Abluft abgeführt werden.The invention offers the advantage that the gas stream is led over the goods to be dried as a largely laminar total stream without sharp deflections, as a result of which thermal energy is withdrawn. This reduces the energy required for cooling down and condensing. In addition, the pressure-side and suction-side chambers in the ceiling part and the housing ensure a calming of the gas flow. The entrained dust particles and the like can be retained by using filters. At the same time, an overpressure and a negative pressure are generated by the fan on the pressure side and suction side, which makes it possible to provide air inlets or gas outlets in the corresponding ceiling parts. Since the loading trolley is kept free of baffles, it can be easily assembled. It is preferably constructed as a frame and is therefore free on all sides. With the dryer, both a recirculation mode and a fresh air mode are possible. Fresh air can be added to the desired extent in a controlled manner or a gas flow component can be discharged as exhaust air.

Weitere Ausgestaltungen der Erfindung, sowie dadurch be­dingte Vorteile ergeben sich aus den Unteransprüchen.Further refinements of the invention, as well as advantages resulting therefrom, result from the subclaims.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert. In der Zeichnung zeigen:

  • Fig. 1 einen schematischen vertikalen Schnitt des Trockners nach der Erfindung;
  • Fig. 2 einen schematischen Schnitt nach der Linie II-II in Fig. 1
  • Fig. 3 eine Draufsicht.
The invention is explained below with reference to an embodiment shown in the drawing. The drawing shows:
  • Figure 1 is a schematic vertical section of the dryer according to the invention.
  • FIG. 2 shows a schematic section along the line II-II in FIG. 1
  • Fig. 3 is a plan view.

Der Trockner 1 besitzt ein im Querschnitt rechteckförmiges Gehäuse 2. Dieses umschließt eine quaderförmige Trockenkam­mer 3. Die Trockenkammer 3 wird von den Seitenwänden 4, 5, der Rückwand 6, der Tür 7, sowie dem Boden 8 und der Decke 9 begrenzt.The dryer 1 has a housing 2 which is rectangular in cross section. This encloses a cuboid drying chamber 3. The drying chamber 3 is delimited by the side walls 4, 5, the rear wall 6, the door 7, and the floor 8 and the ceiling 9.

In die quaderförmige Trockenkammer 3 ist durch die Tür 7 ein Beschickungswagen 10 einschiebbar, der die Trockenkammer 3 passend ausfüllen kann. Dieser Wagen 10 besitzt von einem Rahmen getragene Etagen 11, zwischen die nicht dargestellte Horden mit den zu trocknenden Produkten einschiebbar sind. Der mit Rollen 12 versehene Wagen 10 ist in seinen Abmessun­gen, zumindest den Seitenabmessungen, dem Querschnitt der Trockenkammer 3 angepaßt. Der Wagen 10 ist zumindest nach den Seiten hin offen. Vorzugsweise ist aber auch die Vorder­und Rückseite offen. Die Trockenkammer 3 kann auch so ge­staltet sein, daß sie mehrere Beschickungswagen 10 nebenein­ander oder hintereinander aufnehmen kann.A loading trolley 10 can be inserted into the cuboid drying chamber 3 through the door 7 and can fill the drying chamber 3 appropriately. This carriage 10 has levels 11 supported by a frame, between which the trays (not shown) with the products to be dried can be inserted. The dimensions of the trolley 10 provided with rollers 12, at least the side dimensions, are adapted to the cross section of the drying chamber 3. The carriage 10 is at least open to the sides. However, the front and back are preferably also open. The drying chamber 3 can also be designed so that it can accommodate several loading trolleys 10 side by side or one behind the other.

Die Seitenwände 4, 5 der Trockenkammer 3 sind von gelochten Blechen gebildet, die für das Reinigen nach einwärts schwenkbar gelagert sind. Die Löcher 13 erstrecken sich in im Abstand voneinander angeordneten Lochreihen über die Breite der Seitenwände 4, 5. Sie erstrecken sich in Spalten, zumindest über die Höhe des Beschickungswagens 10. Die Größe der Löcher 13 ist von Lochreihe zu Lochreihe so bemessen, daß die mit den Pfeilen I angedeuteten Gasteilströme in Querrichtung durch den Beschickungswagen 10 in etwa gleich sind.The side walls 4, 5 of the drying chamber 3 are formed by perforated sheets which are pivoted inwards for cleaning. The holes 13 extend in rows of holes spaced apart from one another over the width of the side walls 4, 5. They extend in columns, at least over the height of the loading trolley 10. The size of the holes 13 is dimensioned from row of holes to row of holes so that the the partial gas flows indicated by the arrows I in the transverse direction through the loading trolley 10 are approximately the same.

Die Seitenwände 4, 5 bilden mit den Gehäuseseitenteilen 14, 15 Kammern 16, 17. Die Oberseite der quaderförmigen Kammern 16, 17 kann durch Filter 18, 19 abgeschlossen sein. Es kön­nen auch statt Filter laminare Gasströmung bewirkende Ble­che, Lochbleche oder dergleichen vorhanden sein. Die anderen Enden der Kammern 16, 17 bilden Bodenteile 20, 21.The side walls 4, 5 form with the housing side parts 14, 15 chambers 16, 17. The top of the cuboid chambers 16, 17 can be closed off by filters 18, 19. Instead of filters, sheets, perforated sheets or the like which cause gas flow can also be present. The other ends of the chambers 16, 17 form base parts 20, 21.

Die Seitenkammern 16, 17 mit ihren Seitenteilen 14, 15, den Seitenwänden 4, 5, den Filtern 18, 19 und den Bodenteilen 20, 21 können als getrennte Baumodule ausgebildet sein. Sie können in gleichbleibender Größe mit Trockenkammermodulen zusammengebaut werden, die in ihrer Größe den jeweiligen An­wendungszwecken angepaßt werden.The side chambers 16, 17 with their side parts 14, 15, the side walls 4, 5, the filters 18, 19 and the bottom parts 20, 21 can be designed as separate building modules. They can be assembled in a constant size with drying chamber modules, the size of which is adapted to the respective application.

Das Gehäuse 2 besitzt weiter ein Deckenteil 22, das fest mit den übrigen Gehäuseteilen verbunden ist. Das Deckenteil 22 besitzt gleichfalls einen rechteckförmigen Grundriß. Seine Seitenwände setzen Gehäuseteile 14, 15 nach aufwärts fort.The housing 2 also has a ceiling part 22 which is firmly connected to the other housing parts. The ceiling part 22 also has a rectangular plan. Its side walls continue housing parts 14, 15 upwards.

Das Deckenteil 22 weist ein das Filter 19 und die Decke 9 übergreifendes Gehäuseteil 23 auf. Dieses Gehäuseteil 23 ist durch eine liegende Zwischenwand 24 in eine Hauptkammer 25 und in eine Nebenkammer 26 unterteilt. Wenigstens die Haupt­kammer 25 ist an ihrem einen Eingang, über die Gas in der angedeuteten Pfeilrichtung zuströmt, mit einer einstellba­ren, steuerbaren Klappe 27 versehen. Eine gleiche Klappe kann zusätzlich am Eingang der Nebenkammer 26 vorgesehen sein. Ferner ist eine steuerbare Klappe 28 am Ausgang der Nebenkammer 26 vorhanden.The cover part 22 has a housing part 23 which overlaps the filter 19 and the cover 9. This housing part 23 is divided into a main chamber 25 and a secondary chamber 26 by a lying partition wall 24. At least the main chamber 25 is provided with an adjustable, controllable flap 27 at its one entrance, via which gas flows in the direction indicated by the arrow. A same flap can additionally be provided at the entrance to the secondary chamber 26. There is also a controllable flap 28 at the outlet of the secondary chamber 26.

In der Nebenkammer ist liegend ein Kondensator 29 angeord­net. Dieser wird von einem Rohrregister gebildet, das von Kühlflüssigkeit durchströmt wird. Unterhalb des Kondensator 29 befindet sich eine nur schematisch angedeutete Auffangs­schale 30 für Kondenswasser.A condenser 29 is arranged horizontally in the secondary chamber. This is formed by a pipe register through which cooling liquid flows. Below the condenser 29 there is a drip tray 30 for condensed water, which is only indicated schematically.

Dem Raum vor der Klappe 27 ist ein Gasaustrittsstutzen 31 mit einer Steuerklappe 32 zugeordnet. Sind die Klappen 27, 28 geschlossen, kann die gesamte Gasströmung nach außen abgeführt werden. Es kann zusätzlich ein Austrittsfilter 33 vorgesehen sein.A gas outlet connection 31 with a control flap 32 is assigned to the space in front of the flap 27. If the flaps 27, 28 are closed, the entire gas flow can be discharged to the outside. An outlet filter 33 can also be provided.

Die Kammer 25 mündet nach aufwärts in einen Lufteintritts­stutzen 34, der mit einem Filter 35 und einer Steuerklappe 36 versehen sein kann. Über den Stutzen 34 kann für "Frischluftbetrieb" die erforderliche Frischluft zugeführt werden.The chamber 25 opens upwards into an air inlet connection 34, which can be provided with a filter 35 and a control flap 36. The required fresh air can be supplied via the connector 34 for "fresh air operation".

Da die Kammern 25, 26 ansaugseitig zu einem Lüfterkorb 37 vorgesehen sind, der durch einen Elektromotor 38 angetrieben wird und Gas in der angedeuteten Pfeilrichtung über eine An­saugöffnung 39 ansaugt, entstehen in diesen Unterdrücke. Hierdurch wird ein Ansaugen von steuerbarer Frischluft in der angedeuteten Pfeilrichtung über den Ansaugstutzen 34 er­möglicht.Since the chambers 25, 26 are provided on the suction side to form a fan basket 37 which is driven by an electric motor 38 and sucks gas in the direction of the arrow indicated via a suction opening 39, negative pressures arise in these. This enables controllable fresh air to be sucked in in the direction indicated by the arrow via the suction nozzle 34.

An die Ansaugöffnung 39 schließt sich ein den Gehäuseteil 23 teilweise überdeckender Gehäuseteil 40 an, der den Lüfter­korb 37 umschließt und den Elektromotor 38 trägt. Er setzt sich in eine gegenüber der Ansaugöffnung 39 erweiternde Druckkammer 41 fort. Diese Druckkammer 41 besitzt in ihrem nach abwärts gerichteten Kammerteil eine Heizvorrichtung 42. Diese wird gleichfalls von einem Röhrenregister gebildet, welche ggf. von Heißdampf oder dergleichen beheizt wird. Das Gehäuseteil 40 besitzt einen nach aufwärts gerichteten Gas­auslaßstutzen 42, der mit einer Steuerklappe 43 und gegebe­nenfalls einem Austrittsfilter 44 für einen Gasaustritt in der angegebenen Pfeilrichtung versehen ist.The suction opening 39 is followed by a housing part 40 which partially covers the housing part 23 and which surrounds the fan cage 37 and carries the electric motor 38. It continues into a pressure chamber 41 which widens in relation to the suction opening 39. This pressure chamber 41 has in its downward chamber part a heating device 42. This is also formed by a tube register, which may be heated by superheated steam or the like. The housing part 40 has an upward gas outlet connection 42, which is provided with a control flap 43 and optionally an outlet filter 44 for a gas outlet in the direction indicated by the arrow.

Der Trockner 1 ist sowohl für "Umluftbetrieb" als auch für Betrieb mit "Teil- oder Voll-Frischluft" geeignet. Beim Ar­beiten mit Umluft kann der Trockner inertisiert werden, z.B. mit Stickstoff, wodurch die Explosionsgefahr beim Trocknen von z.B. lösungsmittelhaltigen Produkten vermindert wird.The dryer 1 is suitable both for "recirculation mode" and for operation with "partial or full fresh air". When working with circulating air, the dryer can be rendered inert, e.g. with nitrogen, which reduces the risk of explosion when drying, for example, products containing solvents.

Der vom Lüfterkorb 37 in die groß bemessene Druckkammer 41 bewegte Gasstrom wird über die Heizvorrichtung 42 aufge­heizt. Das leicht demontierbare Filter 18 hält im Gasstrom mitgerissene Staubteilchen oder dergleichen zurück. Der in die großräumige Gaskammer 17 laminar einströmende und sich dort verteilende Gasstrom gelangt über die vom Lochblech gebildete Seitenwand 4 gut verteilt über die Etagen 11 und damit die zu trocknenden Güter des Beschickungswagens 10. Die Temperatur des Gasstromes wird sich über den die Güter tragenden Hordenblechen zwischen den Etagen des Beschik­kungswagens 10, bedingt durch die Verdunstungskälte, ernied­rigen.The gas flow moved by the fan basket 37 into the large-sized pressure chamber 41 is heated via the heating device 42. The easily removable filter 18 retains dust particles or the like entrained in the gas flow. The gas stream flowing into the large-scale gas chamber 17 and being distributed there is distributed well via the side wall 4 formed by the perforated plate over the floors 11 and thus the goods to be dried in the loading trolley 10. The temperature of the gas flow will vary between the tray plates carrying the goods lower the floors of the charging trolley 10 due to the evaporative cooling.

Je nach dem, welche Feuchtigkeitsmenge den zu trocknenden Produkten entnommen wird, muß ein Gasnebenstrom zum Konden­sator 29 gesteuert werden. Die Kondensationsleistung kann durch die Steuerklappen 27, 28 eingestellt werden. Vorzugs­weise wird der Kondensator 29 mit Kühlsohle beschickt, so daß eine Vorabsenkung der Temperatur erreicht wird. Die von der Rotation des Lüfterkorbes 37 mit bewirkte Gasstromerwär­mung ist bei der Bemessung der Aufheizung durch die Heizvor­richtung 42 mit zu berücksichtigen. Über die beiden Stufen 31 und 34 ist auch ein "Voll-Frischluftbetrieb" bei voll­ständigem Ersatz der umgewälzten Luftmenge durch Frischluft möglich.Depending on the amount of moisture removed from the products to be dried, a gas bypass flow to the condenser 29 must be controlled. The condensation power can be adjusted by the control flaps 27, 28. The condenser 29 is preferably charged with cooling sole so that the temperature is reduced in advance. The gas flow heating caused by the rotation of the fan cage 37 must also be taken into account in the dimensioning of the heating by the heating device 42. "Full fresh air operation" is also possible via the two stages 31 and 34, with fresh air replacing the circulated air quantity completely.

Claims (8)

1. Trockner, insbesondere für die chemische Industrie, mit einem Gehäuse mit quaderförmiger Trockenkammer, wenig­stens einem die Trockenkammer passend ausfüllenden Be­schickungswagen, einem im Deckenteil des Trocknergehäuses untergebrachten Ventilator mit druckseitiger Austritts­kammer, einer Heizvorrichtung, einem Kondensator, einer Verteilvorrichtung für den den Beschickungswagen, die Trockenkammer und den Deckenteil des Gehäuses durchströ­menden Gasstrom, der in einen über die Heizvorrichtung fließenden Hauptstrom und einen über den Kondensator fließenden Nebenstrom aufteilbar ist, dadurch gekenn­zeichnet, daß im Deckenteil (22) des Gehäuses (2) saug­seitig des Ventilators (37, 38) eine Verzweigungskammer ausgebildet ist, die in eine Hauptkammer (25) und eine Nebenkammer (26) unterteilt ist, daß in der Nebenkammer der Kondensator (29) untergebracht ist, daß wenigstens eine der Eingänge dieser Kammern eine Steuerklappe (27) für den Gasstrom aufweist, daß in der druckseitigen Kam­mer (41) im Deckenteil (40) die Heizvorrichtung (42) an­geordnet ist, daß den Aus- bzw. Eingängen der Kammern (25, 26 bzw. 41) im Deckenteil (22, 40) Seitenkammern (16, 17) im Gehäuse über die Höhe des Beschickungswagens (10) zugeordnet sind und daß die die Trockenkammer (3) mitbildenden Seitenwände (4, 5) Durchtrittsöffnungen (13) für den Gasstrom aufweisen.1.Dryers, in particular for the chemical industry, with a housing with a cuboidal drying chamber, at least one loading trolley filling the drying chamber, a fan in the ceiling part of the dryer housing with a pressure-side outlet chamber, a heating device, a condenser, a distribution device for the loading trolley, the Drying chamber and gas stream flowing through the cover part of the housing, which can be divided into a main flow flowing through the heating device and a secondary flow flowing through the condenser, characterized in that in the cover part (22) of the housing (2) on the suction side of the fan (37, 38) Branch chamber is formed, which is divided into a main chamber (25) and a secondary chamber (26), that the condenser (29) is accommodated in the secondary chamber, that at least one of the inputs of these chambers has a control flap (27) for the gas flow that in the pressure-side chamber (41) in Ceiling part (40) the heating device (42) is arranged so that the exits and entrances of the chambers (25, 26 and 41) in the ceiling part (22, 40) side chambers (16, 17) in the housing over the height of the loading trolley ( 10) are assigned and that the drying chamber (3) co-forming side walls (4, 5) have passage openings (13) for the gas flow. 2. Trockner nach Anspruch 1, dadurch gekennzeichnet, daß die Seitenkammern (16, 17) des Gehäuses (2) eintritts- bzw. austrittsseitig Filter (18, 19) aufweisen.2. Dryer according to claim 1, characterized in that the side chambers (16, 17) of the housing (2) on the inlet or outlet side filters (18, 19). 3. Trockner nach Anspruch 1, dadurch gekennzeichnet, daß die Heizvorrichtung (42) und der Kondensator (29) von Rohrre­gistern gebildet sind.3. Dryer according to claim 1, characterized in that the heating device (42) and the condenser (29) are formed by tube registers. 4. Trockner nach Anspruch 1, dadurch gekennzeichnet, daß der druckseitigen Kammer (41) im Deckenteil (40) des Gehäuses (2) ein steuerbarer Gasauslaß (42, 43, 44) und der saug­seitigen Kammer (25) im Deckenteil (22) des Gehäuses ein steuerbarer Lufteinlaß (31, 32, 33) zugeordnet ist.4. Dryer according to claim 1, characterized in that the pressure-side chamber (41) in the ceiling part (40) of the housing (2) has a controllable gas outlet (42, 43, 44) and the suction-side chamber (25) in the ceiling part (22) of the A controllable air inlet (31, 32, 33) is assigned to the housing. 5. Trockner nach Anspruch 4, dadurch gekennzeichnet, daß der Lufteinlaß (31, 32, 33) der Steuerklappe (27) für die Hauptkammer (25} nachgeordnet ist und daß ein dieser Steuerklappe vorgeordneter Gasauslaß (31, 32, 33) vorhan­den ist.5. Dryer according to claim 4, characterized in that the air inlet (31, 32, 33) of the control flap (27) for the main chamber (25} is arranged downstream and that a gas outlet (31, 32, 33) upstream of this control flap is present. 6. Trockner nach Anspruch 1, dadurch gekennzeichnet, daß die Gasdurchtriffsöffnungen (13) in den Wänden (4, 5) der Trockenkammer (3) zwischen den Etagen (11) des Beschickungswagens (10) in solchen Größen angeordnet sind, daß die Teilgasströme durch den Beschickungswagen etwa gleich sind.6. Dryer according to claim 1, characterized in that the gas passage openings (13) in the walls (4, 5) of the drying chamber (3) between the floors (11) of the loading trolley (10) are arranged in such sizes that the partial gas flows through the loading trolleys are approximately the same. 7. Trockner nach Anspruch 4, dadurch gekennzeichnet, daß die Seitenkammerwände (4, 5) als nach einwärts in die Trocken-kammer (3) schwenkbare Lochwände ausgebildet sind.7. Dryer according to claim 4, characterized in that the side chamber walls (4, 5) are designed as inwardly into the drying chamber (3) pivotable perforated walls. 8. Trockner nach Anspruch 1, dadurch gekennzeichnet, daß die Seitenkammern (16, 17), die Trockenkammer (3) und der Deckenteil (22, 40) des Gehäuses (2) als Module ausgebil­det sind.8. Dryer according to claim 1, characterized in that the side chambers (16, 17), the drying chamber (3) and the ceiling part (22, 40) of the housing (2) are designed as modules.
EP87113091A 1986-11-05 1987-09-07 Dryer, in particular for the chemical industry Withdrawn EP0266516A3 (en)

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DE19863637737 DE3637737A1 (en) 1986-11-05 1986-11-05 DRYERS, ESPECIALLY FOR THE CHEMICAL INDUSTRY
DE3637737 1986-11-05

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EP0430910A1 (en) * 1989-12-01 1991-06-05 Margaritelli - S.P.A. Hot-air cell artificial drying plant for wood equipped with mobile lamellar deflector for intercepting internal air flows
EP0633996A4 (en) * 1992-04-10 1995-05-31 Khanh Dinh Closed-loop drying process and system.
EP0775882A1 (en) * 1995-11-21 1997-05-28 Hermann Waldner GmbH & Co. Dryer, in particular for the chemical or pharmaceutical industry
WO1998019124A1 (en) * 1996-10-28 1998-05-07 Hellmann-Hygrex Luft- Und Klimatechnik Gmbh Method and device for drying thin coatings
FR2781180A1 (en) * 1998-07-17 2000-01-21 Fours Et Bruleurs Rey Torrefaction reactor for processing wood waste, has sealed chamber operating discontinuously, arrangement for stirring the air to enhance heating, and arrangement to stress the wood
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FR2632714A1 (en) * 1988-06-10 1989-12-15 Monteiro Daniel Hot air drying furnace for dehydrating fruit or vegetables laid down on carriages with superimposed metal trays, particularly for turning green plums into prunes
EP0430910A1 (en) * 1989-12-01 1991-06-05 Margaritelli - S.P.A. Hot-air cell artificial drying plant for wood equipped with mobile lamellar deflector for intercepting internal air flows
EP0633996A4 (en) * 1992-04-10 1995-05-31 Khanh Dinh Closed-loop drying process and system.
EP0775882A1 (en) * 1995-11-21 1997-05-28 Hermann Waldner GmbH & Co. Dryer, in particular for the chemical or pharmaceutical industry
WO1998019124A1 (en) * 1996-10-28 1998-05-07 Hellmann-Hygrex Luft- Und Klimatechnik Gmbh Method and device for drying thin coatings
FR2781180A1 (en) * 1998-07-17 2000-01-21 Fours Et Bruleurs Rey Torrefaction reactor for processing wood waste, has sealed chamber operating discontinuously, arrangement for stirring the air to enhance heating, and arrangement to stress the wood
WO2000004328A1 (en) * 1998-07-17 2000-01-27 Fours Et Bruleurs Rey Reactor for wood retification
WO2001031270A3 (en) * 1999-10-27 2001-06-14 Skrotskaya Olga Panteleimonovn Drying plant and method for drying wood
US6725566B1 (en) 1999-10-27 2004-04-27 Viktor Georgievich Skrotsky Drying plant and method for drying wood
RU2228499C2 (en) * 2002-06-11 2004-05-10 Сафразьян Игорь Гурьевич Method and device for drying of lumbers
WO2006006837A1 (en) * 2004-07-15 2006-01-19 Gordijs, Jevgenijs Method for drying sawn timber and a drier for carrying out said method
RU2277682C2 (en) * 2004-07-15 2006-06-10 Светлана Андреевна Ягодзинская Method for drying of lumber (alterations) and drier for its realization
DE102005017187A1 (en) * 2005-04-13 2006-10-19 Lindauer Dornier Gmbh Continuous dryers in multi-day construction, especially for plate-shaped products
DE102005017187B4 (en) * 2005-04-13 2007-06-21 Lindauer Dornier Gmbh Continuous dryers in multi-day construction, especially for plate-shaped products
AT503635B1 (en) * 2006-05-10 2008-10-15 Wienerberger Ag CHAMBER DRYER
US9948549B2 (en) 2006-11-02 2018-04-17 Voip-Pal.Com, Inc. Producing routing messages for voice over IP communications
EP1923649A3 (en) * 2006-11-20 2009-10-28 Alfons Tschritter GmbH Method for drying a material to be dried and plant for carrying out the method
RU2338136C1 (en) * 2007-02-15 2008-11-10 Николай Васильевич Ясаков Efficient drying chamber
RU2468319C2 (en) * 2008-03-03 2012-11-27 Василий Андреевич Столяр Method of drying wood and plant for its implementation
RU2386093C2 (en) * 2008-07-01 2010-04-10 Открытое акционерное общество "Сибирский Агропромышленный Дом" (ОАО "САД") Device for directing gas medium flow in grain drier (versions)
RU2419754C1 (en) * 2010-02-24 2011-05-27 Открытое акционерное общество "Инновационно-выставочный комплекс "ЭКОПАРК-ФИЛИ" Heat pump drying chamber
CN103673526A (en) * 2013-04-18 2014-03-26 成都天磐科技有限责任公司 Materials drying device

Also Published As

Publication number Publication date
DE3637737C2 (en) 1988-08-25
JPS63123979A (en) 1988-05-27
DE3637737A1 (en) 1988-05-19
EP0266516A3 (en) 1989-03-29
US4837945A (en) 1989-06-13

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