EP2758736A1 - Heating system for warming a gaseous treatment medium for a dryer - Google Patents

Heating system for warming a gaseous treatment medium for a dryer

Info

Publication number
EP2758736A1
EP2758736A1 EP12746351.1A EP12746351A EP2758736A1 EP 2758736 A1 EP2758736 A1 EP 2758736A1 EP 12746351 A EP12746351 A EP 12746351A EP 2758736 A1 EP2758736 A1 EP 2758736A1
Authority
EP
European Patent Office
Prior art keywords
gaseous
medium
heating
treatment
treatment medium
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.)
Granted
Application number
EP12746351.1A
Other languages
German (de)
French (fr)
Other versions
EP2758736B1 (en
Inventor
Markus Böhn
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.)
Truetzschler Nonwovens GmbH
Original Assignee
Truetzschler Nonwovens GmbH
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 Truetzschler Nonwovens GmbH filed Critical Truetzschler Nonwovens GmbH
Priority to EP16203016.7A priority Critical patent/EP3168559B1/en
Publication of EP2758736A1 publication Critical patent/EP2758736A1/en
Application granted granted Critical
Publication of EP2758736B1 publication Critical patent/EP2758736B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/16—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning perforated in combination with hot air blowing or suction devices, e.g. sieve drum dryers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001—Drying-air generating units, e.g. movable, independent of 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
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
    • 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

Definitions

  • the invention relates to a heating system for heating a gaseous treatment medium for a device, preferably a dryer, for treating a preferably sheet-like material with a gaseous treatment medium according to the preamble of claim 1, and a device, preferably a dryer, for treating, in particular for drying, A preferably web-shaped product, in particular a textile product web, according to the preamble of claim 13 and a method for heating a gaseous treatment medium for a device for treating a preferably web-shaped product according to claims 15 and 16.
  • the previously known heating systems are mostly used for dryers for drying a preferably web-shaped material.
  • the heating systems serve to heat a gaseous treatment medium with which a preferably sheet-like material can be dried within a drying chamber of the dryer.
  • Such a heating system often has a gas burner as a heating device.
  • the cooled treatment medium returned from the drying chamber is then mixed for heating with a heating medium heated by the heater.
  • the mixture is then called heated gaseous treatment medium supplied to the drying chamber to dry the web-shaped Guts.
  • the object of the present invention is therefore to provide a heating system and a device as well as a method for heating a gaseous treatment medium which requires less energy and is thus more efficient.
  • the invention provides in an advantageous manner that the gaseous heating medium can be introduced into the mixing chamber in such a way that turbulences occur in the mixing chamber when the gaseous heating medium is introduced into the mixing chamber, which generates intensive mixing of the gaseous heating medium with the recirculated, gaseous treatment medium.
  • the gaseous heating medium When introducing the gaseous heating medium into the mixing chamber, the gaseous heating medium may be deflectable via guide elements, so that turbulences occur in the mixing chamber when the gaseous heating medium is introduced into the mixing chamber.
  • the vanes may be vane or vane elements.
  • the heater may be a gas burner, a thermal oil heater or an electric heater.
  • the gaseous heating medium may comprise a mixture of fresh air and combustion exhaust gas of the gas burner. If an electric heater or the thermal oil heater is used, the gaseous heating medium may be the fresh air heated by the electric heater or the thermal oil heater, or it may be a mixture of fresh air and gas warmed by the electric heater or the thermal oil heater.
  • An antechamber for mixing the fresh air with the combustion exhaust gases of the gas burner may be provided. If an electric heater or the thermal oil heater is used, an antechamber may be for mixing the fresh air and the gas heated by the electric heater or the thermal oil heater.
  • the pre-chamber is preferably arranged inside the mixing chamber. This has the advantage that the waste heat of the prechamber can be used to heat the gases in the mixing chamber.
  • the gaseous treatment medium returned by the device preferably the dryer, can be introduced into the mixing chamber in such a way that turbulences occur in the mixing chamber when the recycled treatment medium is introduced into the mixing chamber.
  • the turbulences of the recirculated gaseous treatment medium can rotate in the opposite direction to the turbulence of the introduced into the mixing chamber gaseous heating medium. This leads in addition to a better mixing of the two gaseous media.
  • the mixing chamber preferably has a cylindrical inner space, wherein the recirculated, gaseous treatment medium can be introduced tangentially into the cylindrical mixing chamber, so that turbulences occur in the mixing chamber when the recirculated, gaseous treatment medium is introduced into the mixing chamber.
  • the recirculated, gaseous treatment medium When introducing the recirculated, gaseous treatment medium into the mixing chamber, the recirculated, gaseous treatment medium can be deflected via guide elements, so that turbulences occur in the mixing chamber when the recirculated, gaseous treatment medium is introduced into the mixing chamber.
  • a flow rectifier In the flow direction behind the mixing chamber, a flow rectifier can be arranged, which rectifies the flow of the heated, gaseous treatment medium.
  • the heated gaseous treatment medium is the mixture of gaseous heating medium and recycled, gaseous treatment medium.
  • the flow rectifier may be a channel extending in the flow direction, which has Strömungsleitbleche for rectifying the flow of the gaseous treatment medium.
  • the flow baffles are aligned in the flow direction within the channel.
  • the flow straightener may be a screen or perforated plate arranged in the cross-sectional area of the channel.
  • a device for the treatment, in particular for drying, of a preferably web-shaped Guts.
  • the web-shaped material is in particular a textile web.
  • the device may have a treatment space through which the material to be dried can be guided.
  • the gaseous treatment medium in the treatment space flows through the web-like material.
  • the device may be a dryer and the web-shaped material can by means of the flow with the gaseous treatment medium be dried.
  • the device can also be a thermobonding device and the web-like material can be thermobonded by means of the flow with the gaseous treatment medium.
  • the device has a heating system for heating the gaseous treatment medium.
  • the heating system has a heating device and a mixing chamber, wherein in the mixing chamber, a heated by the heater, gaseous heating medium and a recirculated from the treatment chamber, gaseous treatment medium are miscible.
  • the gaseous heating medium can be introduced into the mixing chamber in such a manner that turbulences occur in the mixing chamber when the gaseous heating medium is introduced into the mixing chamber, which generates intensive mixing of the gaseous heating medium with the recirculated, gaseous treatment medium.
  • the heating system can be arranged outside the treatment room.
  • a method for heating a gaseous treatment medium for a device, preferably a dryer, for treating, in particular for drying, a preferably web-shaped product with a gaseous treatment medium comprising the following steps:
  • a method for heating a gaseous treatment medium for a device, preferably a dryer, for treating, in particular for drying, a preferably web-shaped product with a gaseous treatment medium is provided in which the following steps are provided:
  • the gaseous treatment medium is often warmed up within the treatment room.
  • the exhaust air is discharged directly from the treatment room and the fresh air is introduced directly into the treatment room.
  • the gases having different temperatures must first mix within the treatment space. This often leads to unwanted and poorly predictable flow conditions within the treatment room.
  • the present method has the advantage that the entire air treatment takes place externally.
  • the heated and treated, gaseous supplied treatment medium with the desired temperature to the treatment room and does not first mix in the treatment room. This improves the flow conditions within the treatment room.
  • the exhaust air can be used to heat the fresh air. This also has the advantage that energy can be saved.
  • the fresh air can be supplied to the recycled, gaseous treatment medium before, during or after the heating of the recirculated, gaseous treatment medium.
  • the fresh air can be supplied to the recirculated, gaseous treatment medium after a part of the recirculated, gaseous treatment medium has already been removed as exhaust air. This has the advantage that the system has already been deprived of the maximum humidity.
  • the fresh air may be heated and the heated fresh air may be used to heat the recycled gaseous treatment medium.
  • the fresh air can first be mixed with a combustion exhaust gas of a heater and this mixture can be supplied to the recirculated gaseous treatment medium as a gaseous heating medium and heat it thus.
  • the heating of the recirculated, gaseous treatment medium may take place in a heating system, wherein the heating system is preferably a heating system according to one of claims 1 to 4.
  • the heated and treated with fresh air, gaseous treatment medium can be blown with the aid of a fan means in the treatment room, wherein the fan means is arranged in the flow direction behind the heating system.
  • the external air conditioning has the advantage that the individual modules required for air treatment, such as heating system and recirculation fan can be placed anywhere and can be changed or changed independently of the treatment room.
  • the individual modules may e.g. be placed in another room, so that the waste heat does not affect the system. Further, e.g. the circulating air fan are silenced separately.
  • An air treatment plant for processing a gaseous treatment medium for a device, preferably a dryer, for treating a preferably web-shaped Guts with a gaseous treatment medium may be arranged externally from the treatment room of the device, wherein the web-shaped material is treated in the treatment room.
  • fresh air can be supplied for the treatment of the gaseous treatment medium and the gaseous treatment medium can be heated by means of a heating system.
  • the air treatment plant comprises a circulating air fan, through which the gaseous treatment medium can be supplied to the treatment room and the gaseous treatment medium already used for treatment can be returned from the treatment room to the air treatment plant.
  • the recirculation fan may be arranged in the flow direction behind the heating system.
  • Fig. 4 is a heating system
  • FIG. 5 is a sectional view of the heating system of FIG .. 4
  • Fig. 1 shows a schematic representation of the control system of the gaseous treatment medium for a device for treating a, preferably web-shaped Guts with a gaseous treatment medium 40.
  • the device is a dryer 2. It is a warmed, gaseous treatment medium 40 via a feed channel 6 fed to a treatment room.
  • the treatment room is a drying chamber 28.
  • a preferably web-shaped material 12 is dried, wherein the gaseous treatment medium flows through the web-shaped material to be dried 12 and it dries it. This will be explained in more detail with reference to FIG.
  • the already used for drying, gaseous treatment medium 30 is discharged from the drying chamber 28 and recycled via a channel 4 to an air treatment device 3.
  • the already drying turned gaseous treatment medium 30 is colder than the heated, gaseous treatment medium 40 and it, by having absorbed the moisture of the web-shaped Guts 12, a higher humidity than the heated, gaseous treatment medium 40th
  • a portion of the recirculated gaseous treatment medium 30 is discharged.
  • the remaining part of the recirculated, gaseous treatment medium 30 is mixed with fresh air and heated and fed as heated, gaseous treatment medium 40 via the feed channel 6 of the drying chamber 28.
  • the recirculated, gaseous treatment medium is always the gaseous treatment medium 30 which has already been recycled from the treatment chamber or the drying chamber 28 and is already used for treating or for drying, which is returned to the air treatment device 3.
  • the gaseous treatment medium or the heated, gaseous treatment medium is the gaseous treatment medium 40, which has already been prepared and is supplied to the treatment chamber or drying chamber 28 for treatment or drying.
  • the drying chamber 28 is shown schematically.
  • the heated gaseous treatment medium 40 is introduced into the drying chamber 28.
  • a gas-permeable drum 20 is arranged in the drying chamber 28.
  • the gas-permeable drum 20 has a gas-permeable drum casing 18.
  • a preferably web-shaped material 12 is introduced via a deflection roller 14.
  • This web-shaped material 12 is transported by means of the drum 20 in the direction of rotation of the drum 20 arranged on the drum shell 18. A portion of the drum shell 18 is thus always covered by a portion of the web-shaped Guts 12.
  • the web-shaped material 12 is dried.
  • the gaseous treatment medium 30 already used for drying is supplied via a channel 4, as already described with reference to FIG. 1, to an air treatment device 3. After drying, the web-shaped material 12 is removed via a second deflection roller 16 from the drying chamber 28.
  • the air treatment device 3 shows an air treatment device 3, wherein the air treatment device 3 is merely a collection of lines and individual modules, which are explained in more detail below.
  • the recycled, gaseous treatment medium 30 is partially removed as exhaust air 32.
  • This exhaust air 32 is supplied to a heat exchanger 36 before discharging. Further, fresh air 8 is supplied to the heat exchanger 36 and heated by the heat of the exhaust air 32.
  • the remainder of the gaseous, recirculated treatment medium 30 is introduced into a heating system 38.
  • the fresh air 8 'warmed up by the heat exchanger 36 is supplied to the heating system 38.
  • the heating system 38 will be described with reference to FIGS. 4 and 5 explained in more detail. From the heating system 38 exits the warmed, gaseous treatment medium 40 and is fed via a fan means 42 again via the feed channel 6 of the drying chamber 28.
  • the heating system 38 is shown in more detail.
  • the gaseous recycled treatment medium 30 is fed via an opening 31 to a mixing chamber 54.
  • a gaseous heating medium 49 heated by means of a heating device is introduced into the mixing chamber, the gaseous heating medium 49 being able to be introduced into the mixing chamber 54 such that turbulences occur in the mixing chamber 54 when the gaseous heating medium 49 is introduced into the mixing chamber 54.
  • intensive mixing of the gaseous heating medium 49 with the recirculated, gaseous treatment medium 30 takes place.
  • the heater is in the present embodiment, a gas burner 44th As shown in FIG.
  • the gaseous heating medium 49 is deflected via guide elements 53 when it is introduced into the mixing chamber 54 such that turbulences in the mixing chamber 54 occur when the gaseous heating medium 49 is introduced into the mixing chamber 54.
  • the guide elements 53 are preferably wing or blade elements.
  • the gaseous heating medium 49 was heated by means of the gas burner 44. This is done by mixing combustion gases 46 of the gas burner 44 with the already preheated fresh air 8 '.
  • the mixture of combustion exhaust gas 46 and fresh air 8 ' is the heated gaseous heating medium 49.
  • the mixing of combustion exhaust gas 46 and fresh air 8 "takes place in a prechamber 50.
  • the fresh air 8' is conveyed via an opening 48 along the circumference of the prechamber 50 on an end face 60 the antechamber 50.
  • the opening 52, through which the heated, gaseous heating medium 49 enters the mixing chamber 54, is arranged on the end face 62 of the prechamber 50 opposite the end face 60.
  • the hot combustion exhaust gas 46 is introduced axially and centrally into the cylindrical prechamber 50. This has the advantage that the hot combustion exhaust gas 46 is surrounded when fresh air 8 'is introduced. Thus, no heat is lost as waste heat.
  • the pre-chamber 50 is disposed within the mixing chamber 54, so that the waste heat of the pre-chamber 50 can be used to heat the gaseous media in the mixing chamber 54 and no heat is lost.
  • the illustrated mixing chamber 54 has a cylindrical interior.
  • the gaseous treatment medium 30 is introduced tangentially into the cylindrical mixing chamber 54.
  • turbulences occur in the mixing chamber 54 when the gaseous treatment medium 30 is introduced into the mixing chamber 54.
  • the gaseous, recirculated treatment medium 30 is preferably introduced in such a way that the turbulences in opposite The latter direction rotate as the turbulences of the introduced into the mixing chamber 54, gaseous heating medium 49. In this way, the recirculated gaseous treatment medium 30 and the gaseous heating medium 49 mix very well.
  • guide elements can also be provided, which lead to turbulence during the introduction of the gaseous treatment medium 30.
  • the gaseous heating medium 49 is also introduced tangentially into the cylindrical mixing chamber 54.
  • the turbulences of the recirculated, gaseous treatment medium 30 and the turbulence of the gaseous heating medium 49 should always rotate in different directions, so that there is a more intensive mixing of the two gaseous media.
  • the fresh air 8 ' can be introduced into the prechamber in such a way that swirling occurs during the introduction of the fresh air 8' into the prechamber.
  • the combustion exhaust gases 46 can also be introduced into the prechamber in such a way that turbulences occur when the combustion exhaust gas 46 is introduced into the prechamber 50.
  • the turbulences of the fresh air 8 'and the combustion exhaust gas 46 can rotate in different directions. This would also lead to better mixing.
  • a tapered channel 56 is arranged in the flow direction behind the mixing chamber 54.
  • the flow rate of the gaseous treatment medium 40 is increased.
  • the heated, gaseous treatment medium 40 can exit from the opening 48 and be supplied to the drying chamber 28 via the feed channel 6.
  • a flow rectifier not shown, may be arranged in the flow direction behind the mixing chamber 54. This can be a channel with flow guide plates aligned in the channel direction.
  • sieves or perforated plates arranged in the cross-sectional area of a channel can also be used.

Landscapes

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

Abstract

The invention relates to a heating system (38) for warming a gaseous treatment medium (30, 40) for a device for treating a preferably strip-shaped article (12) by means of a gaseous treatment medium (40), comprising a heating device, a mixing chamber (54) for mixing at least one first, gaseous heating medium (49) heated by means of the gas burner, and the gaseous treatment medium (30) already used for treatment and recycled by the device. Said gaseous heating medium (49) can be introduced into the mixing chamber (54) such that when the gaseous medium (49) is introduced into the mixing chamber (54), vortexes are produced in the mixing chamber (54), which generate an intensive thorough-mixing of the gaseous heating medium (49) with the recycled gaseous treatment medium (30).

Description

Heizsystem zum Erwärmen eines gasförmigen Behandlungsmediums  Heating system for heating a gaseous treatment medium
für einen Trockner  for a dryer
Die Erfindung betrifft ein Heizsystem zum Erwärmen eines gasförmigen Behandlungsmediums für eine Vorrichtung, vorzugsweise einen Trockner, zum Behandeln eines vorzugsweise bahnförmigen Guts mit einem gasförmigen Behandlungsmedium nach dem Oberbegriff des Anspruchs 1, sowie eine Vorrichtung, vorzugsweise einen Trockner, zum Behandeln, insbesondere zum Trocknen, eines vorzugsweise bahnförmiges Guts, insbesondere einer Textilwarenbahn, nach dem Oberbegriff des Anspruchs 13 und ein Verfahren zum Erwärmen eines gasförmigen Behandlungsmediums für eine Vorrichtung zum Behandeln eines vorzugsweise bahnförmigen Guts nach Anspruch 15 und 16. The invention relates to a heating system for heating a gaseous treatment medium for a device, preferably a dryer, for treating a preferably sheet-like material with a gaseous treatment medium according to the preamble of claim 1, and a device, preferably a dryer, for treating, in particular for drying, A preferably web-shaped product, in particular a textile product web, according to the preamble of claim 13 and a method for heating a gaseous treatment medium for a device for treating a preferably web-shaped product according to claims 15 and 16.
Die bisher bekannten Heizsysteme werden meist für Trockner zum Trocknen eines vorzugsweise bahnförmigen Guts verwendet. Die Heizsysteme dienen dazu, ein gasförmiges Behandlungsmedium zu erwärmen, mit dem innerhalb einer Trockenkammer des Trockners ein vorzugsweise bahnförmiges Gut getrocknet werden kann. Ein solches Heizsystem weist häufig einen Gasbrenner als Heizeinrichtung auf. Das von der Trockenkammer rückgeführte, abgekühlte Behandlungsmedium wird dann zum Erwärmen mit einem von der Heizeinrichtung erwärmten Heizmedium gemischt. Das Gemisch wird dann als erwärmtes gasförmiges Behandlungsmedium der Trockenkammer zu Trocknen des bahnförmigen Guts zugeführt. In den letzten Jahren besteht jedoch zunehmend Bedarf an effizienteren Heizsystemen, um Energie einzusparen. The previously known heating systems are mostly used for dryers for drying a preferably web-shaped material. The heating systems serve to heat a gaseous treatment medium with which a preferably sheet-like material can be dried within a drying chamber of the dryer. Such a heating system often has a gas burner as a heating device. The cooled treatment medium returned from the drying chamber is then mixed for heating with a heating medium heated by the heater. The mixture is then called heated gaseous treatment medium supplied to the drying chamber to dry the web-shaped Guts. However, in recent years, there has been an increasing demand for more efficient heating systems to save energy.
Aufgabe der vorliegenden Erfindung ist es daher ein Heizsystem und einen Vorrichtung sowie ein Verfahren zum Erwärmen eines gasförmigen Behandlungsmediums zu schaffen, das bzw. der weniger Energie benötigt und somit effizienter ist. The object of the present invention is therefore to provide a heating system and a device as well as a method for heating a gaseous treatment medium which requires less energy and is thus more efficient.
Zur Lösung dieser Aufgabe dienen die Merkmale der Ansprüche 1, 13 und 15. To achieve this object, the features of claims 1, 13 and 15 serve.
Die Erfindung sieht in vorteilhafter Weise vor, dass das gasförmige Heizmedium derart in die Mischkammer einleitbar ist, dass beim Einleiten des gasförmigen Heizmediums in die Mischkammer Verwirbelungen in der Mischkammer auftreten, die eine intensive Durchmischung des gasförmigen Heizmediums mit dem rückgeführten, gasförmigen Behandlungsmediums erzeugt. The invention provides in an advantageous manner that the gaseous heating medium can be introduced into the mixing chamber in such a way that turbulences occur in the mixing chamber when the gaseous heating medium is introduced into the mixing chamber, which generates intensive mixing of the gaseous heating medium with the recirculated, gaseous treatment medium.
Dies hat den Vorteil, dass das heiße gasförmige Heizmedium besser mit dem rückgeführten gasförmigen Behandlungsmedium mischbar ist. Durch die Strömungsführung wird eine bessere Durchmischung des gasförmigen Heizmediums und des gasförmigen Behandlungsmediums erzielt ohne zusätzliche Widerstände einbauen zu müssen. Dies hat zur Folge, dass geringe Druckverluste im System entstehen und die benötigte Ventilatorleistung für die Umwälzung des gasförmigen Behandlungsmediums reduziert werden kann. Weiterhin werden heiße Strähnen verhindert, die zu einer ungleichmäßigen Temperaturverteilung innerhalb des Prozesses führen. This has the advantage that the hot gaseous heating medium is better miscible with the recirculated gaseous treatment medium. By the flow guide a better mixing of the gaseous heating medium and the gaseous treatment medium is achieved without having to install additional resistors. This has the consequence that low pressure losses occur in the system and the required fan power for the circulation of the gaseous treatment medium can be reduced. Furthermore, hot strands are prevented, which lead to an uneven temperature distribution within the process.
Beim Einleiten des gasförmigen Heizmediums in die Mischkammer kann das gasförmige Heizmedium über Leitelemente umlenkbar sein, so dass beim Einleiten des gasförmigen Heizmediums in die Mischkammer Verwirbelungen in der Mischkammer auftreten. When introducing the gaseous heating medium into the mixing chamber, the gaseous heating medium may be deflectable via guide elements, so that turbulences occur in the mixing chamber when the gaseous heating medium is introduced into the mixing chamber.
Die Leitelemente können Flügel- oder Schaufelelemente sein. Die Heizeinrichtung kann ein Gasbrenner, eine Thermalölheizung oder eine Elektroheizung sein. The vanes may be vane or vane elements. The heater may be a gas burner, a thermal oil heater or an electric heater.
Das gasförmige Heizmedium kann ein Gemisch aus Frischluft und Verbrennungsabgas des Gasbrenners umfassen. Wenn eine Elektroheizung oder der Thermalölheizung verwendet wird, kann das gasförmige Heizmedium die von der Elektroheizung oder der Thermalölheizung erwärmte Frischluft sein oder es kann ein Gemisch aus Frischluft und von der Elektroheizung oder der Thermalölheizung erwärmtes Gas sein. The gaseous heating medium may comprise a mixture of fresh air and combustion exhaust gas of the gas burner. If an electric heater or the thermal oil heater is used, the gaseous heating medium may be the fresh air heated by the electric heater or the thermal oil heater, or it may be a mixture of fresh air and gas warmed by the electric heater or the thermal oil heater.
Es kann eine Vorkammer zum Mischen der Frischluft mit den Verbrennungsabgasen des Gasbrenners vorgesehen sein. Wenn eine Elektroheizung oder der Thermalölheizung verwendet wird, kann eine Vorkammer zum Mischen der Frischluft und des von der Elektroheizung oder der Thermalölheizung erwärmten Gases sein. An antechamber for mixing the fresh air with the combustion exhaust gases of the gas burner may be provided. If an electric heater or the thermal oil heater is used, an antechamber may be for mixing the fresh air and the gas heated by the electric heater or the thermal oil heater.
Die Vorkammer ist vorzugsweise innerhalb der Mischkammer angeordnet. Dies hat den Vorteil, dass die Abwärme der Vorkammer zum Wärmen der in der Mischkammer befindlichen Gase verwendet werden kann. The pre-chamber is preferably arranged inside the mixing chamber. This has the advantage that the waste heat of the prechamber can be used to heat the gases in the mixing chamber.
Das von der Vorrichtung, vorzugsweise dem Trockner, rückgeführte gasförmige Behandlungsmedium kann derart in die Mischkammer einleitbar sein, das beim Einleiten des rückgeführten Behandlungsmediums in die Mischkammer Verwirbelungen in der Mischkammer auftreten. The gaseous treatment medium returned by the device, preferably the dryer, can be introduced into the mixing chamber in such a way that turbulences occur in the mixing chamber when the recycled treatment medium is introduced into the mixing chamber.
Dies führt ebenfalls zu einer verbesserten Durchmischung des rückgeführten Behandlungsmediums mit dem gasförmigen Heizmedium. This also leads to an improved mixing of the recirculated treatment medium with the gaseous heating medium.
Die Verwirbelungen des rückgeführten gasförmigen Behandlungsmediums können in entgegengesetzter Richtung zu den Verwirbelungen des in die Mischkammer eingeführten gasförmigen Heizmediums rotieren. Dies führt zusätzlich zu einer besseren Durchmischung der beiden gasförmigen Medien. Die Mischkammer weist vorzugsweise ein zylindrischen Innenraum auf, wobei das rückgeführte, gasförmige Behandlungsmedium tangential in die zylindrische Mischkammer einleitbar ist, so dass beim Einleiten des rückgeführten, gasförmigen Behandlungsmediums in die Mischkammer Verwirbelungen in der Mischkammer auftreten. The turbulences of the recirculated gaseous treatment medium can rotate in the opposite direction to the turbulence of the introduced into the mixing chamber gaseous heating medium. This leads in addition to a better mixing of the two gaseous media. The mixing chamber preferably has a cylindrical inner space, wherein the recirculated, gaseous treatment medium can be introduced tangentially into the cylindrical mixing chamber, so that turbulences occur in the mixing chamber when the recirculated, gaseous treatment medium is introduced into the mixing chamber.
Beim Einleiten des rückgeführten, gasförmigen Behandlungsmediums in die Mischkammer kann das rückgeführte, gasförmige Behandlungsmedium über Leitelemente umlenkbar sein, so dass beim Einleiten des rückgeführten, gasförmigen Behandlungsmediums in die Mischkammer Verwirbelungen in der Mischkammer auftreten. When introducing the recirculated, gaseous treatment medium into the mixing chamber, the recirculated, gaseous treatment medium can be deflected via guide elements, so that turbulences occur in the mixing chamber when the recirculated, gaseous treatment medium is introduced into the mixing chamber.
In Strömungsrichtung hinter der Mischkammer kann ein Strömungsgleichrichter angeordnet sein, der die Strömung des erwärmten, gasförmigen Behandlungsmediums gleichrichtet. Das erwärmte gasförmige Behandlungsmedium ist das Gemisch aus gasförmigen Heizmedium und rückgeführten, gasförmigen Behandlungsmedium. In the flow direction behind the mixing chamber, a flow rectifier can be arranged, which rectifies the flow of the heated, gaseous treatment medium. The heated gaseous treatment medium is the mixture of gaseous heating medium and recycled, gaseous treatment medium.
Der Strömungsgleichrichter kann ein in Strömungsrichtung verlaufender Kanal sein, der zum Gleichrichten der Strömung des gasförmigen Behandlungsmediums Strömungsleitbleche aufweist. Die Strömungsleitbleche sind in Strömungsrichtung innerhalb des Kanals ausgerichtet. The flow rectifier may be a channel extending in the flow direction, which has Strömungsleitbleche for rectifying the flow of the gaseous treatment medium. The flow baffles are aligned in the flow direction within the channel.
Der Strömungsgleichrichter kann ein in der Querschnittsfläche des Kanals angeordnetes Sieb oder Lochblech sein. The flow straightener may be a screen or perforated plate arranged in the cross-sectional area of the channel.
Gemäß der vorliegenden Erfindung kann eine Vorrichtung, vorzugsweise ein Trockner, zur Behandlung, insbesondere zum Trocknen, eines vorzugsweise bahnförmigen Guts vorgesehen sein. Das bahnförmige Gut ist insbesondere eine textile Warenbahn. Die Vorrichtung kann einen Behandlungsraum, durch den das zu trocknende Gut führbar ist, aufweisen. Das in dem Behandlungsraum befindliche, gasförmige Behandlungsmedium durchströmt das bahnförmige Gut. Die Vorrichtung kann ein Trockner sein und das bahnförmige Gut kann mittels der Durchströmung mit dem gasförmigen Behandlungsmedium getrocknet werden. Die Vorrichtung kann aber auch eine Thermobond- Vorrichtung sein und das bahnförmige Gut kann mittels der Durchströmung mit dem gasförmigen Behandlungsmedium thermobondiert werden. According to the present invention, a device, preferably a dryer, for the treatment, in particular for drying, of a preferably web-shaped Guts be provided. The web-shaped material is in particular a textile web. The device may have a treatment space through which the material to be dried can be guided. The gaseous treatment medium in the treatment space flows through the web-like material. The device may be a dryer and the web-shaped material can by means of the flow with the gaseous treatment medium be dried. The device can also be a thermobonding device and the web-like material can be thermobonded by means of the flow with the gaseous treatment medium.
Ferner weist die Vorrichtung ein Heizsystem zum Erwärmen des gasförmigen Behandlungsmediums auf. Das Heizsystem weist eine Heizeinrichtung und ein Mischkammer auf, wobei in der Mischkammer ein mittels der Heizeinrichtung erwärmtes, gasförmiges Heizmedium und ein von dem Behandlungsraum rückgeführtes, gasförmiges Behandlungsmedium mischbar sind. Gemäß der vorliegenden Erfindung ist vorzugsweise vorgesehen, dass das gasförmige Heizmedium derart in die Mischkammer einleitbar ist, das beim Einleiten des gasförmigen Heizmediums in die Mischkammer Verwirbelungen in der Mischkammer auftreten, die eine intensive Durchmischung des gasförmigen Heizmediums mit dem rückgeführten, gasförmigen Behandlungsmedium erzeugen. Furthermore, the device has a heating system for heating the gaseous treatment medium. The heating system has a heating device and a mixing chamber, wherein in the mixing chamber, a heated by the heater, gaseous heating medium and a recirculated from the treatment chamber, gaseous treatment medium are miscible. According to the present invention, it is preferably provided that the gaseous heating medium can be introduced into the mixing chamber in such a manner that turbulences occur in the mixing chamber when the gaseous heating medium is introduced into the mixing chamber, which generates intensive mixing of the gaseous heating medium with the recirculated, gaseous treatment medium.
Das Heizsystem kann außerhalb des Behandlungsraums angeordnet sein. The heating system can be arranged outside the treatment room.
Ferner kann gemäß der vorliegenden Erfindung ein Verfahren zum Erwärmen eines gasförmigen Behandlungsmediums für eine Vorrichtung, vorzugsweise einen Trockner, zum Behandeln, insbesondere zum Trocknen, eines vorzugsweise bahnförmigen Guts mit einem gasförmigen Behandlungsmedium vorgesehen sein, wobei das Verfahren folgende Schritte aufweist: Furthermore, according to the present invention, a method for heating a gaseous treatment medium for a device, preferably a dryer, for treating, in particular for drying, a preferably web-shaped product with a gaseous treatment medium may be provided, the method comprising the following steps:
- Rückführen eines bereits zum Behandeln des Guts verwendeten gasförmigen Behandlungsmediums, Recirculation of a gaseous treatment medium already used for treating the material,
- Einleiten des rückgeführten, gasförmigen Behandlungsmediums in eine Mischkammer,  Introducing the recycled gaseous treatment medium into a mixing chamber,
- Einleiten eines erwärmten, gasförmigen Heizmediums in die Mischkammer zum Erwärmen des rückgeführten, gasförmigen Behandlungsmediums, wobei das gasförmige Heizmedium derart in die Mischkammer einführbar ist, dass Verwirbelungen beim Einführen auftreten, die eine intensive Durchmischung des gasförmigen Heizmediums mit dem rückgeführten, gasförmigen Behandlungsmediums erzeugen. Ferner ist gemäß der vorliegenden Erfindung ein Verfahren zum Erwärmen eines gasförmigen Behandlungsmediums für eine Vorrichtung, vorzugsweise einen Trockner, zum Behandeln, insbesondere zum Trocknen, eines vorzugsweise bahnförmigen Guts mit einem gasförmigen Behandlungsmedium vorgesehen bei dem folgenden Schritte vorgesehen sind: - Introducing a heated, gaseous heating medium in the mixing chamber for heating the recirculated gaseous treatment medium, wherein the gaseous heating medium is introduced into the mixing chamber such that turbulence occurs during insertion, which produce an intensive mixing of the gaseous heating medium with the recirculated gaseous treatment medium. Furthermore, according to the present invention, a method for heating a gaseous treatment medium for a device, preferably a dryer, for treating, in particular for drying, a preferably web-shaped product with a gaseous treatment medium is provided in which the following steps are provided:
- Einführen eines erwärmten, gasförmigen Behandlungsmediums in einen Behandlungsraum, in der eine Trommel mit gasdurchlässigem Trommelmantel angeordnet ist, auf dem das zu behandelnde bahnförmige Gut platzierbar ist, wobei das gasförmige Behandlungsmedium durch das bahnförmige Gut und den gasdurchlässigen Trommelmantel in das Innere der Trommel strömt, Introducing a heated, gaseous treatment medium into a treatment space in which a drum with gas-permeable drum shell is arranged, on which the web-like material to be treated can be placed, the gaseous treatment medium flowing through the web-shaped material and the gas-permeable drum shell into the interior of the drum,
- Abführen des bereits zum Behandeln verwendeten, gasförmigen Behandlungsmediums als rückgeführtes, gasförmiges Behandlungsmedium aus dem Inneren der Trommel und aus dem Behandlungsraum zur von dem Behandlungsraum externen Aufbereitung,  Discharging the gaseous treatment medium already used for treatment as a recirculated, gaseous treatment medium from the interior of the drum and out of the treatment space to the treatment external to the treatment space,
- Aufbereiten des rückgeführten, gasförmigen Behandlungsmediums, wobei das rückgeführte, gasförmige Behandlungsmedium dadurch aufbereitet wird, das es mit Frischluft versetzt und aufgewärmt wird und - Treatment of the recirculated gaseous treatment medium, wherein the recycled, gaseous treatment medium is treated by the fact that it is mixed with fresh air and warmed up and
- Zuführen des aufbereiteten, gasförmigen Behandlungsmediums zu dem Behandlungsraum. - Supplying the treated, gaseous treatment medium to the treatment room.
Bei dem bisherigen Stand der Technik wird das gasförmige Behandlungsmedium häufig innerhalb des Behandlungsraums aufgewärmt. Ebenso wird beim bisherigen Stand der Technik die Abluft direkt von dem Behandlungsraum aus abgeführt und die Frischluft wird direkt in den Behandlungsraum eingeführt. Somit müssen beim bisherigen Stand der Technik die Gase, die unterschiedliche Temperaturen aufweisen, sich erst innerhalb des Behandlungsraums mischen. Dies führt häufig zu nicht erwünschten und schlecht vorhersagbaren Strömungsverhältnisse innerhalb des Behandlungsraums. In the prior art, the gaseous treatment medium is often warmed up within the treatment room. Likewise, in the prior art, the exhaust air is discharged directly from the treatment room and the fresh air is introduced directly into the treatment room. Thus, in the prior art, the gases having different temperatures must first mix within the treatment space. This often leads to unwanted and poorly predictable flow conditions within the treatment room.
Das vorliegende Verfahren hat den Vorteil, dass die gesamte Luftaufbereitung extern erfolgt. Somit wird das erwärmte und aufbereitete, gasförmige Be- handlungsmedium mit der gewünschten Temperatur dem Behandlungsraum zugeführt und muss sich nicht erst in dem Behandlungsraum mischen. Dies verbessert die Strömungsverhältnisse innerhalb des Behandlungsraums. The present method has the advantage that the entire air treatment takes place externally. Thus, the heated and treated, gaseous supplied treatment medium with the desired temperature to the treatment room and does not first mix in the treatment room. This improves the flow conditions within the treatment room.
Bevor das rückgeführte, gasförmige Behandlungsmedium erwärmt wird, kann ein Teil des rückgeführten, gasförmigen Behandlungsmediums als Abluft abgeführt wird. Before the recycled, gaseous treatment medium is heated, a portion of the recirculated gaseous treatment medium is removed as exhaust air.
Dies hat den Vorteil, dass der Teil, der als Abluft abgeführt werden soll, nicht mit aufgewärmt wird. Somit wird Energie eingespart. This has the advantage that the part which is to be discharged as exhaust air, not warmed up with. Thus, energy is saved.
Die Abluft kann zum Erwärmen der Frischluft verwendet werden. Dies hat ebenfalls den Vorteil, dass Energie eingespart werden kann. The exhaust air can be used to heat the fresh air. This also has the advantage that energy can be saved.
Die Frischluft kann vor, während oder nach dem Erwärmen des rückgeführten, gasförmigen Behandlungsmediums dem rückgeführten, gasförmigen Behandlungsmedium zugeführt werden. The fresh air can be supplied to the recycled, gaseous treatment medium before, during or after the heating of the recirculated, gaseous treatment medium.
Die Frischluft kann dem rückgeführten, gasförmigen Behandlungsmedium zugeführt werden nachdem ein Teil des rückgeführten, gasförmigen Behandlungsmediums als Abluft bereits abgeführt worden ist. Dies hat den Vorteil, dass dem System die maximale Feuchte bereits entzogen worden ist. The fresh air can be supplied to the recirculated, gaseous treatment medium after a part of the recirculated, gaseous treatment medium has already been removed as exhaust air. This has the advantage that the system has already been deprived of the maximum humidity.
Die Frischluft kann erwärmt werden und die erwärmte Frischluft kann dafür verwendet werden, das rückgeführte, gasförmige Behandlungsmedium zu erwärmen. The fresh air may be heated and the heated fresh air may be used to heat the recycled gaseous treatment medium.
Die Frischluft kann zunächst mit einem Verbrennungsabgas einer Heizeinrichtung gemischt werden und dieses Gemisch kann als gasförmiges Heizmedium dem rückgeführten, gasförmigen Behandlungsmedium zugeführt werden und dieses damit aufheizen. Das Erwärmen des rückgeführten, gasförmigen Behandlungsmediums kann in einem Heizsystem erfolgt, wobei das Heizsystem vorzugsweise ein Heizsystem nach einem der Ansprüche 1 bis 4 ist. The fresh air can first be mixed with a combustion exhaust gas of a heater and this mixture can be supplied to the recirculated gaseous treatment medium as a gaseous heating medium and heat it thus. The heating of the recirculated, gaseous treatment medium may take place in a heating system, wherein the heating system is preferably a heating system according to one of claims 1 to 4.
Das erwärmte und mit Frischluft versetzte, gasförmigen Behandlungsmedium kann mit Hilfe einer Ventilatoreinrichtung in den Behandlungsraum geblasen werden, wobei die Ventilatoreinrichtung in Strömungsrichtung hinter dem Heizsystem angeordnet ist. The heated and treated with fresh air, gaseous treatment medium can be blown with the aid of a fan means in the treatment room, wherein the fan means is arranged in the flow direction behind the heating system.
Dies hat den Vorteil, dass Energie eingespart werden kann. This has the advantage that energy can be saved.
Ferner hat die externe Luftaufbereitung den Vorteil, dass die zur Luftaufbereitung benötigten Einzelmodule, wie Heizsystem und Umluftventilator an einem beliebigen Ort aufgestellt werden können und unabhängig von dem Behandlungsraum ausgetauscht bzw. verändert werden können. Die Einzelmodule können z.B. in einem anderen Raum aufgestellt werden, so dass die Abwärme die Anlage nicht beeinflusst. Ferner kann z.B. der Umluftventilator separat schallgedämpft werden. Furthermore, the external air conditioning has the advantage that the individual modules required for air treatment, such as heating system and recirculation fan can be placed anywhere and can be changed or changed independently of the treatment room. The individual modules may e.g. be placed in another room, so that the waste heat does not affect the system. Further, e.g. the circulating air fan are silenced separately.
Eine Luftaufbereitungsanlage zum Aufbereiten eines gasförmigen Behandlungsmedium für eine Vorrichtung, vorzugsweise einen Trockner, zum Behandeln eines vorzugsweise bahnförmigen Guts mit einem gasförmigen Behandlungsmedium, kann extern von dem Behandlungsraum der Vorrichtung angeordnet sein, wobei im Behandlungsraum das bahnförmige Gut behandelt wird. In der Luftaufbereitungsanlage kann zum Aufbereiten des gasförmigen Behandlungsmediums Frischluft zugeführt werden und das gasförmige Behandlungsmedium kann mittels eines Heizsystems erwärmt werden. An air treatment plant for processing a gaseous treatment medium for a device, preferably a dryer, for treating a preferably web-shaped Guts with a gaseous treatment medium may be arranged externally from the treatment room of the device, wherein the web-shaped material is treated in the treatment room. In the air treatment plant, fresh air can be supplied for the treatment of the gaseous treatment medium and the gaseous treatment medium can be heated by means of a heating system.
Ferner umfasst die Luftaufbereitungsanlage einen Umluftventilator, durch den das gasförmige Behandlungsmedium dem Behandlungsraum zugeführt werden kann und das bereits zum Behandeln verwendete, gasförmige Behandlungsmedium von dem Behandlungsraum wieder zu der Luftaufbereitungsanlage rückgeführt werden kann. Der Umluftventilator kann in Strömungsrichtung hinter dem Heizsystem angeordnet sein. Im Folgenden wird unter Bezugnahme auf die Zeichnungen Ausführungsbeispiele der Erfindung näher erläutert. Furthermore, the air treatment plant comprises a circulating air fan, through which the gaseous treatment medium can be supplied to the treatment room and the gaseous treatment medium already used for treatment can be returned from the treatment room to the air treatment plant. The recirculation fan may be arranged in the flow direction behind the heating system. In the following, embodiments of the invention will be explained in more detail with reference to the drawings.
Es zeigen schematisch : They show schematically:
Fig. 1 eine Darstellung des Leitsystems für das gasförmige Behandlungsmedium, 1 is an illustration of the control system for the gaseous treatment medium,
Fig. 2 eine Seitenansicht der Trockenkammer, 2 is a side view of the drying chamber,
Fig. 3 eine Darstellung der Luftaufbereitungseinrichtung, 3 is an illustration of the air treatment device,
Fig. 4 ein Heizsystem Fig. 4 is a heating system
Fig. 5 eine Schnittansicht des Heizsystems aus Fig. 4. 5 is a sectional view of the heating system of FIG .. 4
Fig. 1 zeigt eine schematische Darstellung des Leitsystems des gasförmigen Behandlungsmediums für eine Vorrichtung zum Behandeln eines, vorzugsweise bahnförmigen Guts mit einem gasförmigen Behandlungsmedium 40. In den dargestellten Ausführungsbeispielen ist die Vorrichtung ein Trockner 2. Es wird ein aufgewärmtes, gasförmiges Behandlungsmedium 40 über einen Zuführkanal 6 einem Behandlungsraum zugeführt. Im dargestellten Ausführungsbeispiel ist der Behandlungsraum eine Trockenkammer 28. Fig. 1 shows a schematic representation of the control system of the gaseous treatment medium for a device for treating a, preferably web-shaped Guts with a gaseous treatment medium 40. In the illustrated embodiments, the device is a dryer 2. It is a warmed, gaseous treatment medium 40 via a feed channel 6 fed to a treatment room. In the illustrated embodiment, the treatment room is a drying chamber 28.
In der Trockenkammer 28 wird, wie in Fig. 2 näher dargestellt ist, ein vorzugsweise bahnförmiges Gut 12 getrocknet, wobei das gasförmige Behandlungsmedium durch das zu trocknende bahnförmige Gut 12 strömt und es dabei trocknet. Dies wird in Bezug zu Fig.2 näher erläutert. In the drying chamber 28, as shown in detail in Fig. 2, a preferably web-shaped material 12 is dried, wherein the gaseous treatment medium flows through the web-shaped material to be dried 12 and it dries it. This will be explained in more detail with reference to FIG.
Das bereits zum Trockenen verwendete, gasförmige Behandlungsmedium 30 wird aus der Trockenkammer 28 abgeführt und über einen Kanal 4 zu einer Luftaufbereitungseinrichtung 3 rückgeführt. Das bereits zum Trocknen ver- wendete, gasförmige Behandlungsmedium 30 ist kälter als das erwärmte, gasförmige Behandlungsmedium 40 und es weist dadurch, dass es die Feuchtigkeit des bahnförmigen Guts 12 aufgenommen hat, eine höhere Feuchtigkeit auf als das erwärmte, gasförmige Behandlungsmedium 40. The already used for drying, gaseous treatment medium 30 is discharged from the drying chamber 28 and recycled via a channel 4 to an air treatment device 3. The already drying turned gaseous treatment medium 30 is colder than the heated, gaseous treatment medium 40 and it, by having absorbed the moisture of the web-shaped Guts 12, a higher humidity than the heated, gaseous treatment medium 40th
In der Luftaufbereitungseinrichtung 3 wird ein Teil des rückgeführten, gasförmigen Behandlungsmediums 30 abgeführt. Der restliche Teil des rückgeführten, gasförmigen Behandlungsmediums 30 wird mit Frischluft gemischt und erwärmt und als erwärmtes, gasförmiges Behandlungsmedium 40 über den Zuführkanal 6 der Trockenkammer 28 zugeführt. In the air treatment device 3, a portion of the recirculated gaseous treatment medium 30 is discharged. The remaining part of the recirculated, gaseous treatment medium 30 is mixed with fresh air and heated and fed as heated, gaseous treatment medium 40 via the feed channel 6 of the drying chamber 28.
Das rückgeführte, gasförmige Behandlungsmedium ist stets das aus dem Behandlungsraum bzw. der Trockenkammer 28 rückgeführte, bereits zum Behandeln bzw. zum Trocknen verwendete, gasförmige Behandlungsmedium 30, das der Luftaufbereitungseinrichtung 3 wieder zugeführt wird. Das gasförmige Behandlungsmedium bzw. das erwärmte, gasförmige Behandlungsmedium ist das gasförmige Behandlungsmedium 40, das bereits aufbereitet ist und dem Behandlungsraum bzw. der Trockenkammer 28 zum Behandeln bzw. zum Trocknen zugeführt wird. The recirculated, gaseous treatment medium is always the gaseous treatment medium 30 which has already been recycled from the treatment chamber or the drying chamber 28 and is already used for treating or for drying, which is returned to the air treatment device 3. The gaseous treatment medium or the heated, gaseous treatment medium is the gaseous treatment medium 40, which has already been prepared and is supplied to the treatment chamber or drying chamber 28 for treatment or drying.
In Figur 2 ist die Trockenkammer 28 schematisch dargestellt. Das erwärmte gasförmige Behandlungsmedium 40 wird in die Trockenkammer 28 eingeführt. In der Trockenkammer 28 ist eine gasdurchlässige Trommel 20 angeordnet. Die gasdurchlässige Trommel 20 weist einen gasdurchlässigen Trommelmantel 18 auf. In Figure 2, the drying chamber 28 is shown schematically. The heated gaseous treatment medium 40 is introduced into the drying chamber 28. In the drying chamber 28, a gas-permeable drum 20 is arranged. The gas-permeable drum 20 has a gas-permeable drum casing 18.
In die Trockenkammer 28 wird ein vorzugsweise bahnförmiges Gut 12 über eine Umlenkrolle 14 eingeleitet. Dieses bahnförmige Gut 12 wird mit Hilfe der Trommel 20 in Drehrichtung der Trommel 20 auf dem Trommelmantel 18 angeordnet transportiert. Ein Teil des Trommelmantels 18 ist somit stets von einem Abschnitt des bahnförmigen Guts 12 bedeckt. Das in dem Behandlungsraum 28 befindliche gasförmige Behandlungsmedium 40 tritt, aufgrund eines im Inneren 22 der Trommel 20 angelegten Unterdrucks, durch das bahnförmige Gut 12 und den gasdurchlässigen Trommelmantel 18 in das Innere 22 der Trommel 20. Dadurch wird das bahnförmige Gut 12 getrocknet. Von dem Inneren 22 der Trommel 20 wird das bereits zum Trocknen verwendete, gasförmige Behandlungsmedium 30 über einen Kanal 4, wie bereits bezüglich Fig. 1 beschrieben, einer Luftaufbereitungseinrichtung 3 zugeführt. Nach dem Trocknen wird das bahnförmige Gut 12 über eine zweite Umlenkrolle 16 aus der Trockenkammer 28 abgeführt. Into the drying chamber 28, a preferably web-shaped material 12 is introduced via a deflection roller 14. This web-shaped material 12 is transported by means of the drum 20 in the direction of rotation of the drum 20 arranged on the drum shell 18. A portion of the drum shell 18 is thus always covered by a portion of the web-shaped Guts 12. The gaseous treatment medium 40 located in the treatment chamber 28, due to a vacuum applied in the interior 22 of the drum 20, passes through the web-shaped material 12 and the gas-permeable drum casing 18 into the Inner 22 of the drum 20. As a result, the web-shaped material 12 is dried. From the interior 22 of the drum 20, the gaseous treatment medium 30 already used for drying is supplied via a channel 4, as already described with reference to FIG. 1, to an air treatment device 3. After drying, the web-shaped material 12 is removed via a second deflection roller 16 from the drying chamber 28.
Fig. 3 zeigt eine Luftaufbereitungseinrichtung 3, wobei die Luftaufbereitungseinrichtung 3 lediglich eine Ansammlung von Leitungen und Einzelmodulen ist, die im Folgenden näher erläutert werden. 3 shows an air treatment device 3, wherein the air treatment device 3 is merely a collection of lines and individual modules, which are explained in more detail below.
Das rückgeführte, gasförmige Behandlungsmedium 30 wird teilweise als Abluft 32 abgeführt. Diese Abluft 32 wird vor dem Abführen einem Wärmetauscher 36 zugeführt. Ferner wird Frischluft 8 dem Wärmetauscher 36 zugeführt und durch die Wärme der Abluft 32 aufgewärmt. The recycled, gaseous treatment medium 30 is partially removed as exhaust air 32. This exhaust air 32 is supplied to a heat exchanger 36 before discharging. Further, fresh air 8 is supplied to the heat exchanger 36 and heated by the heat of the exhaust air 32.
Der restliche Teil des gasförmigen, rückgeführten Behandlungsmediums 30 wird in ein Heizsystem 38 eingeleitet. Ebenso wird die durch dem Wärmetauscher 36 aufgewärmte Frischluft 8' dem Heizsystem 38 zugeführt. Das Heizsystem 38 wird in Bezug zu den Fign. 4 und 5 näher erläutert. Aus dem Heizsystem 38 tritt das aufgewärmte, gasförmige Behandlungsmedium 40 aus und wird über eine Ventilatoreinrichtung 42 wieder über den Zuführkanal 6 der Trockenkammer 28 zugeführt. The remainder of the gaseous, recirculated treatment medium 30 is introduced into a heating system 38. Likewise, the fresh air 8 'warmed up by the heat exchanger 36 is supplied to the heating system 38. The heating system 38 will be described with reference to FIGS. 4 and 5 explained in more detail. From the heating system 38 exits the warmed, gaseous treatment medium 40 and is fed via a fan means 42 again via the feed channel 6 of the drying chamber 28.
In den Fign. 4 und 5 ist das Heizsystem 38 näher dargestellt. Das gasförmige rückgeführte Behandlungsmedium 30 wird über eine Öffnung 31 einer Mischkammer 54 zugeführt. Ebenso wird ein mittels einer Heizeinrichtung erwärmtes, gasförmiges Heizmedium 49 in die Mischkammer eingeleitet, wobei das gasförmige Heizmedium 49 derart in die Mischkammer 54 einleitbar ist, dass beim Einleiten des gasförmigen Heizmediums 49 in die Mischkammer 54 Verwirbelungen in der Mischkammer 54 auftreten. Dadurch findet eine intensive Durchmischung des gasförmigen Heizmediums 49 mit dem rückgeführten, gasförmigen Behandlungsmedium 30 statt. Die Heizeinrichtung ist im vorliegenden Ausführungsbeispiel ein Gasbrenner 44. Das gasförmige Heizmedium 49 wird, wie in Figur 5 dargestellt, über Leitelemente 53 beim Einleiten in die Mischkammer 54 derart umgelenkt, dass beim Einleiten des gasförmigen Heizmediums 49 in die Mischkammer 54 Verwirbelungen in der Mischkammer 54 auftreten. Die Leitelemente 53 sind vorzugsweise Flügel- oder Schaufelelemente. In the Fign. 4 and 5, the heating system 38 is shown in more detail. The gaseous recycled treatment medium 30 is fed via an opening 31 to a mixing chamber 54. Likewise, a gaseous heating medium 49 heated by means of a heating device is introduced into the mixing chamber, the gaseous heating medium 49 being able to be introduced into the mixing chamber 54 such that turbulences occur in the mixing chamber 54 when the gaseous heating medium 49 is introduced into the mixing chamber 54. As a result, intensive mixing of the gaseous heating medium 49 with the recirculated, gaseous treatment medium 30 takes place. The heater is in the present embodiment, a gas burner 44th As shown in FIG. 5, the gaseous heating medium 49 is deflected via guide elements 53 when it is introduced into the mixing chamber 54 such that turbulences in the mixing chamber 54 occur when the gaseous heating medium 49 is introduced into the mixing chamber 54. The guide elements 53 are preferably wing or blade elements.
Das gasförmige Heizmedium 49 wurde mittels des Gasbrenners 44 erwärmt. Dies geschieht dadurch, dass Verbrennungsabgase 46 des Gasbrenners 44 mit der bereits vorgewärmten Frischluft 8' vermischt werden. Das Gemisch aus Verbrennungsabgas 46 und Frischluft 8' ist das erwärmte gasförmige Heizmedium 49. Die Vermischung aus Verbrennungsabgas 46 und Frischluft 8" geschieht in einer Vorkammer 50. Die Frischluft 8' wird über eine Öffnung 48 entlang des Umfangs der Vorkammer 50 an einer Stirnseite 60 der Vorkammer 50 eingeleitet. An der der Stirnseite 60 gegenüberliegenden Stirnseite 62 der Vorkammer 50 ist die Öffnung 52 angeordnet, durch die das erwärmte, gasförmige Heizmedium 49 in die Mischkammer 54 tritt. The gaseous heating medium 49 was heated by means of the gas burner 44. This is done by mixing combustion gases 46 of the gas burner 44 with the already preheated fresh air 8 '. The mixture of combustion exhaust gas 46 and fresh air 8 'is the heated gaseous heating medium 49. The mixing of combustion exhaust gas 46 and fresh air 8 "takes place in a prechamber 50. The fresh air 8' is conveyed via an opening 48 along the circumference of the prechamber 50 on an end face 60 the antechamber 50. The opening 52, through which the heated, gaseous heating medium 49 enters the mixing chamber 54, is arranged on the end face 62 of the prechamber 50 opposite the end face 60.
Das heiße Verbrennungsabgas 46 wird axial und mittig in die zylindrische Vorkammer 50 eingeleitet. Dies hat den Vorteil, dass das heiße Verbrennungsabgas 46 beim Einleiten von Frischluft 8' umgeben ist. Somit geht keine Wärme als Abwärme verloren. The hot combustion exhaust gas 46 is introduced axially and centrally into the cylindrical prechamber 50. This has the advantage that the hot combustion exhaust gas 46 is surrounded when fresh air 8 'is introduced. Thus, no heat is lost as waste heat.
Ebenso ist die Vorkammer 50 innerhalb der Mischkammer 54 angeordnet, so dass auch die Abwärme der Vorkammer 50 zum Erwärmen der gasförmigen Medien in der Mischkammer 54 verwendet werden kann und keine Wärme verloren geht. Likewise, the pre-chamber 50 is disposed within the mixing chamber 54, so that the waste heat of the pre-chamber 50 can be used to heat the gaseous media in the mixing chamber 54 and no heat is lost.
Die dargestellte Mischkammer 54 weist einen zylindrischen Innenraum auf. Das gasförmige Behandlungsmedium 30 wird tangential in die zylindrische Mischkammer 54 eingeleitet. Dadurch treten beim Einleiten des gasförmigen Behandlungsmediums 30 in die Mischkammer 54 Verwirbelungen in der Mischkammer 54 auf. Das gasförmige, rückgeführte Behandlungsmedium 30 wird vorzugsweise derart eingeleitet, dass die Verwirbelungen in entgegenge- setzter Richtung rotieren als die Verwirbelungen des in die Mischkammer 54 eingeleiteten, gasförmigen Heizmediums 49. Auf diese Weise vermischen sich das rückgeführte, gasförmige Behandlungsmedium 30 und das gasförmige Heizmedium 49 sehr gut. Alternativ können anstatt der tangentialen Einführung des gasförmigen, rückgeführten Behandlungsmediums 30 auch Leitelemente vorgesehen sein, die zu einer Verwirbelung beim Einführen des gasförmigen Behandlungsmediums 30 führen. The illustrated mixing chamber 54 has a cylindrical interior. The gaseous treatment medium 30 is introduced tangentially into the cylindrical mixing chamber 54. As a result, turbulences occur in the mixing chamber 54 when the gaseous treatment medium 30 is introduced into the mixing chamber 54. The gaseous, recirculated treatment medium 30 is preferably introduced in such a way that the turbulences in opposite The latter direction rotate as the turbulences of the introduced into the mixing chamber 54, gaseous heating medium 49. In this way, the recirculated gaseous treatment medium 30 and the gaseous heating medium 49 mix very well. Alternatively, instead of the tangential introduction of the gaseous, recirculated treatment medium 30, guide elements can also be provided, which lead to turbulence during the introduction of the gaseous treatment medium 30.
Ferner kann alternativ zu den Leitelementen 53, die beim Einleiten des gasförmigen Heizmediums 49 in die Mischkammer 54 zu einer Verwirbelung in der Mischkammer 54 führen, auch vorgesehen sein, dass das gasförmige Heizmedium 49 ebenfalls tangential in die zylindrische Mischkammer 54 eingeführt wird. Die Verwirbelungen des rückgeführten, gasförmigen Behandlungsmediums 30 und die Verwirbelung des gasförmigen Heizmediums 49 sollten stets in unterschiedliche Richtungen rotieren, so dass es zu einer intensiveren Durchmischung der beiden gasförmigen Medien kommt. Furthermore, as an alternative to the guide elements 53, which lead to turbulence in the mixing chamber 54 when the gaseous heating medium 49 is introduced into the mixing chamber 54, it may also be provided that the gaseous heating medium 49 is also introduced tangentially into the cylindrical mixing chamber 54. The turbulences of the recirculated, gaseous treatment medium 30 and the turbulence of the gaseous heating medium 49 should always rotate in different directions, so that there is a more intensive mixing of the two gaseous media.
Ferner kann auch zusätzlich die Frischluft 8' derart in die Vorkammer eingeleitet werden, dass bei der Einleitung der Frischluft 8' in die Vorkammer Verwirbelungen auftreten. Ferner können auch die Verbrennungsabgase 46 derart in die Vorkammer einleitbar sein, dass beim Einleiten des Verbrennungsabgases 46 in die Vorkammer 50 Verwirbelungen auftreten. Ebenso können die Verwirbelungen der Frischluft 8' und des Verbrennungsabgas 46 in unterschiedliche Richtungen rotieren. Dies würde ebenfalls zu einer besseren Durchmischung führen. Furthermore, additionally the fresh air 8 'can be introduced into the prechamber in such a way that swirling occurs during the introduction of the fresh air 8' into the prechamber. Furthermore, the combustion exhaust gases 46 can also be introduced into the prechamber in such a way that turbulences occur when the combustion exhaust gas 46 is introduced into the prechamber 50. Likewise, the turbulences of the fresh air 8 'and the combustion exhaust gas 46 can rotate in different directions. This would also lead to better mixing.
In Strömungsrichtung hinter der Mischkammer 54 ist ein konisch zulaufender Kanal 56 angeordnet. Durch den konisch zulaufenden Kanal 56 wird die Strömungsgeschwindigkeit des gasförmigen Behandlungsmediums 40 erhöht. Das erwärmte, gasförmige Behandlungsmedium 40 kann aus der Öffnung 48 austreten und über den Zuführkanal 6 der Trockenkammer 28 zugeführt werden. Ferner kann in Strömungsrichtung hinter der Mischkammer 54 ein, nicht dargestellter Strömungsgleichrichter angeordnet sein. Dies kann ein Kanal mit in Kanalrichtung ausgerichteten Strömungsleitblechen sein. Als Strömungsgleichrichter können alternativ oder zusätzlich auch in der Querschnittsfläche eines Kanals angeordnete Siebe oder Lochbleche verwendet werden. In the flow direction behind the mixing chamber 54, a tapered channel 56 is arranged. By the tapered channel 56, the flow rate of the gaseous treatment medium 40 is increased. The heated, gaseous treatment medium 40 can exit from the opening 48 and be supplied to the drying chamber 28 via the feed channel 6. Further, in the flow direction behind the mixing chamber 54, a flow rectifier, not shown, may be arranged. This can be a channel with flow guide plates aligned in the channel direction. As a flow straightener, alternatively or additionally, sieves or perforated plates arranged in the cross-sectional area of a channel can also be used.

Claims

Ansprüche claims
1. Heizsystem (38) zum Erwärmen eines gasförmigen Behandlungsmediums (30, 40) für eine Vorrichtung, vorzugsweise einen Trockner, zum Behandeln eines vorzugsweise bahnförmigen Guts (12) mit dem gasförmigen Behandlungsmedium (40), mit A heating system (38) for heating a gaseous treatment medium (30, 40) for a device, preferably a dryer, for treating a preferably sheet-like material (12) with the gaseous treatment medium (40)
- einer Heizeinrichtung,  a heating device,
- einer Mischkammer (54) zum Mischen zumindest eines ersten, mittels der Heizeinrichtung erwärmten, gasförmigen Heizmediums (49) und des bereits zum Behandeln verwendeten, von der Vorrichtung rückgeführten, gasförmigen Behandlungsmediums (30), d a d u r c h g e k e n n z e i c h n e t , dass das gasförmige Heizmedium (49) derart in die Mischkammer (54) einleitbar ist, dass beim Einleiten des gasförmigen Heizmediums (49) in die Mischkammer (54) Verwirbelungen in der Mischkammer (54) auftreten, die eine intensive Durchmischung des gasförmigen Heizmediums (49) mit dem rückgeführten, gasförmigen Behandlungsmedium (30) erzeugen.  - A mixing chamber (54) for mixing at least a first, heated by the heater, gaseous heating medium (49) and the already used for treating, returned from the device, the gaseous treatment medium (30), characterized in that the gaseous heating medium (49) in the mixing chamber (54) can be introduced, that upon introduction of the gaseous heating medium (49) into the mixing chamber (54) turbulence in the mixing chamber (54) occur, the intensive mixing of the gaseous heating medium (49) with the recirculated gaseous treatment medium (54). 30).
2. Heizsystem (38) nach Anspruch 1, dadurch gekennzeichnet, dass beim Einleiten des gasförmigen Heizmediums (49) in die Mischkammer (54) das gasförmige Heizmedium (49) über Leitelemente (53) umlenkbar ist, so dass beim Einleiten des gasförmigen Heizmediums (49) in die Mischkammer (54) Verwirbelungen in der Mischkammer (54) auftreten. 2. Heating system (38) according to claim 1, characterized in that when introducing the gaseous heating medium (49) into the mixing chamber (54), the gaseous heating medium (49) via guide elements (53) is deflected, so that when introducing the gaseous heating medium ( 49) in the mixing chamber (54) turbulence in the mixing chamber (54) occur.
3. Heizsystem (38) nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass das von der Vorrichtung rückgeführte, gasförmige Behandlungsmedium (30) derart in die Mischkammer (54) einleitbar ist, dass beim Einleiten des rückgeführten Behandlungsmediums (30) in die Mischkammer (54) Verwirbelungen in der Mischkammer (54) auftreten. 3. heating system (38) according to one of claims 1 to 2, characterized in that the recirculated from the device, gaseous treatment medium (30) in such a way in the mixing chamber (54) is introduced, that upon introduction of the recirculated treatment medium (30) in the Mixing chamber (54) turbulence in the Mixing chamber (54) occur.
Heizsystem (38) nach Anspruch 3, dadurch gekennzeichnet, dass die Verwirbeiungen des rückgeführten, gasförmigen Behandlungsmediums (30) in entgegengesetzter Richtung zu den Verwirbeiungen des in die Mischkammer (54) eingeführten, gasförmigen Heizmediums (49) rotieren. Heating system (38) according to claim 3, characterized in that the Verwirbeiungen of the recirculated gaseous treatment medium (30) in the opposite direction to the Verwirbeiungen of the introduced into the mixing chamber (54), gaseous heating medium (49) rotate.
Vorrichtung, vorzugsweise Trockner, zum Behandeln eines vorzugsweise bahnförmigen Guts (12) mit einem gasförmigen Behandlungsmedium (40), mit Apparatus, preferably a dryer, for treating a preferably web-shaped product (12) with a gaseous treatment medium (40), with
- einem Behandlungsraum (28) durch den das zu behandelnde Gut (12) führbar ist, wobei ein im Behandlungsraum (28) befindliches gasförmigen Behandlungsmedium (40) das Gut (12) durchströmt,  - A treatment space (28) through which the material to be treated (12) can be guided, wherein a in the treatment chamber (28) befindliches gaseous treatment medium (40) flows through the material (12),
- einem Heizsystem (38) zum Erwärmen des gasförmigen Be¬ handlungsmediums (30, 40), wobei das Heizsystem (38) ein Heizelement und eine Mischkammer (54) aufweist, wobei- A heating system (38) for heating the gaseous Be ¬ treatment medium (30, 40), wherein the heating system (38) has a heating element and a mixing chamber (54), wherein
- in der Mischkammer (54) ein mittels des Heizelementes erwärmtes, gasförmiges Heizmedium (49) und ein von dem Behandlungsraum (28) rückgeführte, gasförmige Behandlungsmedium (30) mischbar sind, d a d u r c h g e k e n n z e i c h n e t , dass das gasförmige Heizmedium (49) derart in die Mischkammer (54) einleitbar ist, dass beim Einleiten des gasförmigen Heizmediums (49) in die Mischkammer (54) Verwirbeiungen in der Mischkammer (54) auftreten, die eine intensive Durchmischung des gasförmigen Heizmediums (49) mit dem rückgeführten, gasförmigen Behandlungsmedium (30) erzeugen. in the mixing chamber (54) a gaseous heating medium (49) heated by the heating element and a gaseous treatment medium (30) recirculated from the treatment space (28) are miscible, characterized in that the gaseous heating medium (49) enters the mixing chamber ( 54) can be introduced that upon introduction of the gaseous heating medium (49) into the mixing chamber (54) Verwirbeiungen in the mixing chamber (54) occur, which produce an intensive mixing of the gaseous heating medium (49) with the recirculated gaseous treatment medium (30).
Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass das Heizsystem (38) außerhalb des Behandlungsraums (28) angeordnet sind. Apparatus according to claim 5, characterized in that the heating system (38) outside of the treatment chamber (28) are.
Verfahren zum Erwärmen eines gasförmigen Behandlungsmediums (30, 40) für eine Vorrichtung, vorzugsweise einen Trockner, zum Behandeln eines vorzugsweise bahnförmigen Guts (12) mit einem gasförmigen Behandlungsmedium (40) durch A method for heating a gaseous treatment medium (30, 40) for a device, preferably a dryer, for treating a preferably sheet-like material (12) with a gaseous treatment medium (40)
- Rückführen eines bereits zum Behandeln des Guts (12) ver¬ wendeten gasförmigen Behandlungsmediums (30), Recirculation of a gaseous treatment medium (30) already used for treating the material (12),
- Einleiten des rückgeführten, gasförmigen Behandlungsmediums (30) in eine Mischkammer (54),  Introducing the recycled gaseous treatment medium (30) into a mixing chamber (54),
- Einleiten eines erwärmten, gasförmigen Heizmediums (49) in die Mischkammer (54) zum Erwärmen des rückgeführten, gasförmigen Behandlungsmediums (30), wobei das gasförmige Heizmedium (49) derart in die Mischkammer (54) eingeführt wird, dass Verwirbelungen beim Einführen auftreten, die eine intensive Durchmischung des gasförmigen Heizmediums (49) mit dem rückgeführten, gasförmigen Behandlungsmedium (30) erzeugen.  - introducing a heated, gaseous heating medium (49) into the mixing chamber (54) for heating the recycled gaseous treatment medium (30), wherein the gaseous heating medium (49) is introduced into the mixing chamber (54) such that turbulences occur during insertion, which produce an intensive mixing of the gaseous heating medium (49) with the recirculated, gaseous treatment medium (30).
Verfahren zum Erwärmen eines gasförmigen Behandlungsmediums (30, 40) für eine Vorrichtung, vorzugsweise einen Trockner, zum Behandeln eines vorzugsweise bahnförmigen Guts (12) mit einem gasförmigen Behandlungsmedium (40) durch A method for heating a gaseous treatment medium (30, 40) for a device, preferably a dryer, for treating a preferably sheet-like material (12) with a gaseous treatment medium (40)
- Einführen eines erwärmten, gasförmigen Behandlungsmediums (40)in einen Behandlungsraum (28), in der eine Trommel mit gasdurchlässigem Trommelmantel (18) angeordnet ist, auf dem das zu behandelnde bahnförmige Gut (12) platzierbar ist, wobei das gasförmige Behandlungsmedium (40) durch das bahnförmige Gut (12) und den gasdurchlässigen Trommelmantel (18) in das Innere der Trommel strömt,  - Introducing a heated, gaseous treatment medium (40) in a treatment chamber (28) in which a drum with gas-permeable drum shell (18) is arranged, on which the web-like material to be treated (12) can be placed, wherein the gaseous treatment medium (40) flows through the web-like material (12) and the gas-permeable drum shell (18) into the interior of the drum,
- Abführen des bereits zum Behandeln verwendeten, gasförmigen Behandlungsmediums (30) als rückgeführtes, gasförmiges Behandlungsmedium (30) aus dem Inneren der Trommel und aus dem Behandlungsraum (28) zur externen Aufbereitung, - Aufbereiten des rückgeführten, gasförmigen Behandlungsme¬ diums (30), wobei das rückgeführte, gasförmige Behand¬ lungsmedium dadurch aufbereitet wird, das es mit Frischluft (8, 8') versetzt und aufgewärmt wird und Discharging the gaseous treatment medium (30) already used for treatment as a recirculated, gaseous treatment medium (30) from the interior of the drum and out of the treatment space (28) for external preparation, - processing of the recycled gaseous Behandlungsme ¬ diums (30), wherein the recycled gaseous treatmen ¬ development medium is conditioned by being mixed it with fresh air (8, 8 ') and warmed up and
- Zuführen des aufbereiteten, gasförmigen Behandlungsmedi¬ ums (40) zu einem Behandlungsraum (28). - Supplying the treated, gaseous Behandlungsmedi ¬ ums (40) to a treatment room (28).
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass, bevor das rückgeführte, gasförmige Behandlungsmedium (30) erwärmt wird, ein Teil des rückgeführten, gasförmigen Behandlungsmediums (30) als Abluft (32) abgeführt wird. 9. The method according to claim 8, characterized in that, before the recirculated gaseous treatment medium (30) is heated, a portion of the recirculated gaseous treatment medium (30) as exhaust air (32) is discharged.
10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass die Abluft (32) zum Erwärmen der Frischluft (8, 8') verwendet wird. 10. The method according to claim 9, characterized in that the exhaust air (32) for heating the fresh air (8, 8 ') is used.
11. Verfahren nach einem der Ansprüche 8 bis 10, dadurch gekenn¬ zeichnet, dass Frischluft (8, 8") zunächst mit einem Verbrennungsabgas (46) einer Heizeinrichtung gemischt wird und dieses Gemisch als gasförmiges Heizmedium (49) dem rückgeführten, gasförmigen Behandlungsmedium (30) zugeführt wird und dieses damit aufge¬ heizt wird. 11. The method according to any one of claims 8 to 10, characterized marked ¬ characterized in that fresh air (8, 8 ") is first mixed with a combustion exhaust gas (46) of a heater and this mixture as a gaseous heating medium (49) the recirculated gaseous treatment medium ( 30) is supplied and this is heated up so ¬ .
12. Verfahren nach einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, dass das Erwärmen des rückgeführten, gasförmigen Be¬ handlungsmediums (30) in einem Heizsystem (38) erfolgt, wobei das Heizsystem (38) vorzugsweise ein Heizsystem (38) nach einem der Ansprüche 1 bis 4 ist. 12. The method according to any one of claims 8 to 11, characterized in that the heating of the recirculated, gaseous Be ¬ treatment medium (30) in a heating system (38), wherein the heating system (38) preferably a heating system (38) according to one of Claims 1 to 4 is.
13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass das erwärmte und mit Frischluft (8, 8') versetzte, gasförmigen Behandlungsmedium (40) mit Hilfe einer Ventilatoreinrichtung (42) in den Behandlungsraum (28) geblasen wird, wobei die Ventilatoreinrichtung (42) in Strömungsrichtung hinter dem Heizsystem (38) angeordnet ist. Luftaufbereitungsanlage (3) zum Aufbereiten eines gasförmigen Behandlungsmedium (30, 40) für eine Vorrichtung, vorzugsweise einen Trockner, zum Behandeln eines vorzugsweise bahnförmigen Guts (12) mit einem gasförmigen Behandlungsmedium (40), wobei die Vorrichtung einen Behandlungsraum zum Behandeln eines vor¬ zugsweise bahnförmigen Guts (12)aufweist, dadurch gekennzeichnet, dass die Luftaufbereitungsanlage (3) extern von dem Behandlungsraum angeordnet ist. 13. The method according to claim 12, characterized in that the heated and with fresh air (8, 8 ') offset, gaseous treatment medium (40) by means of a fan means (42) in the treatment chamber (28) is blown, wherein the fan means (42 ) is arranged in the flow direction behind the heating system (38). Air treatment plant (3) for treating a gaseous treatment medium (30, 40) for a device, preferably a dryer, for treating a preferably web-shaped product (12) with a gaseous treatment medium (40), the device having a treatment space for treating a preferably before ¬ web-shaped Guts (12), characterized in that the air treatment plant (3) is arranged externally of the treatment space.
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US20140223765A1 (en) 2014-08-14
US10539369B2 (en) 2020-01-21
CN103814267A (en) 2014-05-21
CN103814267B (en) 2016-04-13
DE102011113837A1 (en) 2013-03-21
WO2013041306A1 (en) 2013-03-28
EP2758736B1 (en) 2017-04-05
EP3168559B1 (en) 2020-04-01
EP3168559A1 (en) 2017-05-17

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