EP2946158B1 - Device for controlling the temperature of objects - Google Patents

Device for controlling the temperature of objects Download PDF

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Publication number
EP2946158B1
EP2946158B1 EP14700429.5A EP14700429A EP2946158B1 EP 2946158 B1 EP2946158 B1 EP 2946158B1 EP 14700429 A EP14700429 A EP 14700429A EP 2946158 B1 EP2946158 B1 EP 2946158B1
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EP
European Patent Office
Prior art keywords
tunnel
tempering
injector nozzle
fluid
nozzles
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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.)
Revoked
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EP14700429.5A
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German (de)
French (fr)
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EP2946158A1 (en
Inventor
Daniel Sluka
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Eisenmann SE
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Eisenmann SE
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Priority to PL14700429T priority Critical patent/PL2946158T3/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • 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
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/12—Vehicle bodies, e.g. after being painted

Definitions

  • a device of the type mentioned is, for example, in the DE 20 2004 014 233 U1 described.
  • the term "tempering" of an object and specifically of a vehicle body refers to the bringing about of a specific temperature of the object which it initially does not possess. It may be a temperature increase or a temperature decrease.
  • a "tempered fluid” is understood as meaning a fluid which has the temperature required for temperature control of the object.
  • a common case in the automotive industry of tempering, namely heating, of vehicle bodies is the process of drying the coating of a vehicle body, in which e.g. can be a paint or an adhesive or the like.
  • the following description of the invention is based on the example of such a dryer.
  • drying all processes are meant in which the coating of the vehicle bodywork, in particular a lacquer, can be cured, be this by expelling solvents or by crosslinking the coating substance.
  • Known as dryer designed devices of the type mentioned above usually have a tempering, with which the vehicle body is heated to a desired temperature.
  • the vehicle body is acted upon by means of air nozzles from the side evenly with tempered air.
  • the heat carried by the air is conducted to the vehicle body and introduced there into the vehicle body.
  • the heat carried by the air is conducted to the vehicle body and introduced there into the vehicle body.
  • a good thermal convection on the guided through the tempering tunnel air is required.
  • the invention is based on the recognition that the generation of a kind of assisting flow makes the thermal convection, thus the entrainment and distribution of heat energy, more effective in the temperature-controlled fluid. Due to the convection flow, a higher flow velocity is initially generated on the object, so that fresh, tempered fluid is replenished there more quickly, which causes effective heat input into or out of the article. Through an injector nozzle, a targeted directed fluid jet can be generated. The convection flow can act over a large area of the tunnel cross-section.
  • gaseous fluid can be injected into the tempering tunnel through the at least one injector nozzle with a direction component in the direction of the at least one outlet opening.
  • the convection flow acts in the same direction as the basic flow.
  • At least one injector nozzle of such a mode of operation is present, in which the tempered gaseous fluid can be delivered by the injector nozzle.
  • the injector nozzle of the first mode may e.g. be fed from the same source with tempered fluid, such as the fluid nozzles.
  • At least one injector nozzle of such a mode of operation may be present, in which the tunnel atmosphere circulated by the injector nozzle can be discharged.
  • the existing heat energy of the tunnel atmosphere is used.
  • the at least one injector nozzle is connected via a circulation line with at least one outlet opening of the tempering tunnel and conveying means are present so that tunnel atmosphere can be conveyed from the at least one outlet opening to the at least one injector nozzle.
  • An effective circular flow can be generated in the temperature control tunnel, if the at least one outlet opening based on a main axis of the injector nozzle is disposed radially adjacent thereto.
  • the outlet opening on a remote from the discharge direction of the injector nozzle side of the Injector nozzle is arranged. In this way, the discharge jet of the injector nozzle does not disturb the circular flow in the tempering tunnel.
  • 10 generally indicates a device for tempering articles 12.
  • vehicle bodies 14 are shown; the device 10 is an example of a dryer 16 for vehicle bodies 14.
  • the dryer 16 includes a housing 18 in which a tempering tunnel 20 is housed.
  • the Temperiertunnel 20 is bounded laterally by two vertical longitudinal walls 22, 24, below by a bottom 26 and above by a tunnel ceiling 28.
  • the coated vehicle bodies 14 are conveyed through the tempering tunnel 20 by means of a transport system 30 shown schematically.
  • a transport system 30 shown schematically.
  • locks are generally not provided, which allow the passage of the vehicle bodies 14 into the temperature control tunnel 20 in and out of this without much heat loss and with little exchange of atmosphere.
  • a basic flow in the direction of the suction openings 34a is generated in the temperature control tunnel 20.
  • this basic flow is largely from top to bottom. If the suction openings 34a are arranged elsewhere, for example on the ceiling 28 of the tempering tunnel 20, the basic flow also varies accordingly.
  • tempering 20 a temperature control 42 is arranged.
  • FIG. 1 shows the left and the right side in each case a variant of the tempering device 42nd
  • the tempering device 42 includes side nozzle assemblies 44, which flank the vehicle body 14 on both sides.
  • the tempering device 42 comprises, in a manner known per se, a plurality of bottom nozzle arrangements not shown here, which are arranged so that the vehicle bodies 14 can move over these floor nozzle arrangements.
  • Each side nozzle arrangement 44 comprises a plurality of fluid nozzles 46, by means of which a fluid jet of a tempered fluid can be delivered to the vehicle bodies 14.
  • a fluid jet of a tempered fluid can be delivered to the vehicle bodies 14.
  • the fluid nozzles 46 of the side nozzle assemblies 44 can be independently activated and driven so that each of these fluid nozzles 46 is capable of delivering tempered air to the vehicle body 14 independently of the remaining fluid nozzles 46 of the tempering device 42.
  • the fluid nozzles 46 of the side nozzle assemblies 44 are each supplied via separate supply lines 48 with tempered air, in each of which a valve 50 is arranged, each of which can be controlled via a controller 52 isolated.
  • the leads 48 start from a distribution channel 54, which extends to the ceiling 28 of the tempering 20 at its longitudinal walls 22 and is fed via a feed channel 56 from outside the housing 18 with air from a source not shown separately, previously in and for was tempered and conditioned in a known manner.
  • the passage cross section of the supply passage 56 and thus the influx volume of the cabin air can be adjusted in a manner known per se by a pivotable flap 58, which can be pivoted by means of a motor 60.
  • the fluid nozzles 46 of the side nozzle arrangements 44 are positioned so that in particular massive regions of the vehicle body 14 can be acted upon by tempered air.
  • the fluid nozzles 46 are assigned in the present embodiment from bottom to top of the sill area, a central area and an upper portion of the vehicle body 14 near the roof rail.
  • the fluid nozzles 46 are stationary and the dispensing direction is fixed.
  • the fluid nozzles 46 of the side nozzle assemblies 44 may be pivoted in the horizontal direction, so the jet direction of a fluid jet respectively generated by the fluid nozzles 46 can be changed and adjusted, and the fluid jet can be carried, for example, with a moving vehicle body 14.
  • corresponding drives are present, which optionally cooperate with the controller 52.
  • Such a drive can be an electric motor, but also work hydraulically or pneumatically.
  • the movement of the fluid nozzles 46 can also be performed such that targeted turbulence is generated on the surface of the vehicle body 14, whereby the drying can be accelerated.
  • the fluid nozzles 46 can be reciprocated while driving over the vehicle body 14.
  • right side to be recognized variant includes the tempering 42 side nozzle assemblies 62, which flank the vehicle body 14 also on both sides, but are designed differently than the side nozzle assemblies 44 of the first variant.
  • the tempering device 42 includes the above-mentioned, not specifically shown bottom nozzle assemblies.
  • the vertical longitudinal walls 22, 24 of the tempering tunnel 20 serve as an intermediate wall, which separates the tempering tunnel 20 from two lateral pressure chambers 64, which now flank the tempering tunnel 20.
  • the pressure chambers 64 and the temperature control tunnel 20 are surrounded by the housing 18.
  • fluid nozzles 66 which establish a connection between the pressure chambers 64 and the Temperiertunnel 20.
  • the fluid nozzles 66 are stationary in orientation.
  • the fluid nozzles 66 may also be movably supported so that their position, i. E. whose angular position and discharge direction can be adjusted.
  • the fluid nozzles 66 can each comprise, for example, a dome part, with which they are seated in a longitudinal bearing wall 22, 24 in a complementary bearing opening with spherical-cap-shaped boundary walls. As a result, the fluid nozzles 66 can then be pivoted in the bearing openings.
  • the pressure chambers 64 are fed in a known manner with tempered air, which then flows through the fluid nozzles 66 and discharged from them into the temperature control tunnel 20 and directed in the direction of the vehicle bodies 14.
  • Both side nozzle assemblies 44 or 62 may include short jet nozzles and wide jet nozzles.
  • Short jet nozzles are nozzles with such a short discharge width that they can act on the side of the vehicle body 14 facing them.
  • Wide jet nozzles have a greater discharge width than short jet nozzles, which makes it possible to direct the hot air emerging from the jet nozzles through an opening in the facing side surface of the vehicle bodies 14, for example through a window opening or through an opened door, onto the inner surface of the opposite body side, so that the air flow thus traverses the entire interior of the vehicle body 14.
  • the direction of this hot air is such that it is directed primarily to the lower, inner region of the vehicle body 14, where relatively much Mass and therefore a large heat capacity is present.
  • the temperature control device 10 comprises a convection device 68, with the help of which a directed thermal convection in the temperature control tunnel 20 is supported.
  • a convection device 68 the distribution of the thermal energy in the air in the temperature control tunnel 20 is influenced in such a way that the thermal energy entrained in the tunnel atmosphere is effectively introduced into the vehicle bodies 14 and thereby utilized effectively.
  • the convection device 68 comprises injector nozzles 70, which are arranged in an upper region near or on the ceiling 28 of the tempering tunnel 20 and blow air into the tempering tunnel 20 with a directional component in the direction of the outlet openings 34a.
  • the injector nozzles 70 are arranged on one side of the tempering tunnel 20, which faces the suction openings 34a.
  • injector nozzles 70 of a first operating mode can be supplied with air from the same source, such as the tempering device 42. In the figure, this is illustrated by the example of the first, in FIG. 1 left to be recognized variant of the tempering 42 illustrates. There, the injector nozzles 70 are supplied via the distribution channel 54 with air.
  • the injector nozzles 70 may also be supplied with air from a self-sufficient air source.
  • injector nozzles 70 of a second operating mode are provided, from which circulated tunnel atmosphere can be discharged.
  • Injector nozzles 70 of the second operating mode are components of a circulation device 72 which is shown in the second variant of the tempering device 42 shown on the right in the figure.
  • the outlet openings 74 are arranged at a height level above the injector nozzles 70.
  • the outlet openings 74 are arranged radially relative to a main axis (not specifically shown) of the injector nozzle 70. In principle, however, the outlet openings 74 can also be positioned at a different location of the tempering tunnel 20.
  • each circulation line 76 are located as a conveying means, a fan 78 and a valve 80, both of which are controlled by the controller 52. With active fan 78 and opened valve 80 thus tunnel atmosphere is sucked above the injector nozzles 70, led to the injector nozzles 70 and discharged through this down into the temperature control tunnel 20.
  • the convection device 68 is independent of their operation in addition to the basic flow one Basic flow supporting convective flow generated. In the present embodiment, this leads along the outside of the vehicle bodies 14, so that cooled air, whose heat energy has already been introduced into the vehicle body 14, is rapidly transported away and can be replaced by hot air flowing in later.
  • the convection device 68 By means of the convection device 68, a stronger flow with less air can be generated in the tempering tunnel 20 than is possible without the convection device 68 and in particular without the injector nozzles 70.
  • a circular flow is formed in the tempering tunnel 20 via the injector nozzles 70 on the outer flanks of the vehicle bodies 14 to the bottom 26 of the tempering tunnel 20, there to its center and from there up to the ceiling 28 of the tempering tunnel 20 leads where the air is then sucked off to the side via the outlet openings 74. Accordingly, if there are two circulating devices 72 on both sides of the tempering tunnel 20, two such circulatory flows are formed.

Description

Die Erfindung betrifft eine Vorrichtung zum Temperieren von Gegenständen, insbesondere zum Trocknen von beschichteten Fahrzeugkarosserien oder Karosserieteilen, mit

  1. a) einem Gehäuse;
  2. b) einem in dem Gehäuse untergebrachten Temperierort, durch welchen die Gegenstände mittels eines Transportsystems förderbar sind;
  3. c) einer Temperiereinrichtung zum Temperieren der Gegenstände mit einem temperierten gasförmigen Fluid, welche Fluiddüsen umfasst;
  4. d) einem Absaugsystem, mittels welchem Tunnelatmosphäre durch wenigstens eine Absaugöffnung absaugbar ist,
    wodurch im Temperiertunnel eine Grundströmung in Richtung auf die wenigstens eine Absaugöffnung erzeugt wird;
  5. e) einer Konvektionseinrichtung, durch welche zusätzlich zur Grundströmung eine die Grundströmung unterstützende Konvektionsströmung erzeugbar ist;
    wobei
  6. f) die Konvektionseinrichtung eine oder mehrere Injektordüsen umfasst, durch welche gasförmiges Fluid in den Temperiertunnel einblasbar ist;
  7. g) die wenigstens eine Injektordüse auf einer Seite des Temperiertunnels angeordnet ist, welche der wenigstens einen Absaugöffnung gegenüberliegt.
The invention relates to a device for controlling the temperature of objects, in particular for drying coated vehicle bodies or body parts, with
  1. a) a housing;
  2. b) a tempering location accommodated in the housing, through which the objects can be conveyed by means of a transport system;
  3. c) a tempering device for tempering the articles with a tempered gaseous fluid, which fluid nozzles comprises;
  4. d) an extraction system, by means of which tunnel atmosphere can be sucked through at least one suction opening,
    whereby a basic flow in the direction of the at least one suction opening is generated in the temperature control tunnel;
  5. e) a convection device, by means of which, in addition to the basic flow, a convection flow assisting the basic flow can be generated;
    in which
  6. f) the convection device comprises one or more injector nozzles, through which gaseous fluid can be injected into the temperature control tunnel;
  7. g) the at least one injector nozzle on one side of the tempering tunnel is arranged, which is opposite to the at least one suction opening.

Eine Vorrichtung der eingangs genannten Art ist beispielsweise in der DE 20 2004 014 233 U1 beschrieben.A device of the type mentioned is, for example, in the DE 20 2004 014 233 U1 described.

Wenn vorliegend von "Temperieren" eines Gegenstandes und konkret einer Fahrzeugkarosserie gesprochen wird, ist hiermit die Herbeiführung einer bestimmten Temperatur des Gegenstandes gemeint, die dieser zunächst noch nicht besitzt. Es kann sich um eine Temperaturerhöhung oder eine Temperaturverringerung handeln. Unter einem "temperierten Fluid" wird ein Fluid verstanden, welches die zur Temperierung des Gegenstandes erforderliche Temperatur besitzt.In the present case, the term "tempering" of an object and specifically of a vehicle body refers to the bringing about of a specific temperature of the object which it initially does not possess. It may be a temperature increase or a temperature decrease. A "tempered fluid" is understood as meaning a fluid which has the temperature required for temperature control of the object.

Ein in der Automobilindustrie häufiger Fall des Temperierens, nämlich des Erwärmens, von Fahrzeugkarosserien ist der Vorgang des Trocknens der Beschichtung einer Fahrzeugkarosserie, bei welcher es sich z.B. um einen Lack oder einen Klebstoff oder dergleichen handeln kann. Die nachfolgende Beschreibung der Erfindung erfolgt am Beispiel eines solchen Trockners.A common case in the automotive industry of tempering, namely heating, of vehicle bodies is the process of drying the coating of a vehicle body, in which e.g. can be a paint or an adhesive or the like. The following description of the invention is based on the example of such a dryer.

Wenn vorliegend von "Trocknen" die Rede ist, so sind damit alle Vorgänge gemeint, bei denen die Beschichtung der Fahrzeugkarosserie, insbesondere ein Lack, zum Aushärten gebracht werden kann, sei dies nun durch Austreiben von Lösemitteln oder durch Vernetzung der Beschichtungssubstanz.If in the present case "drying" is mentioned, then all processes are meant in which the coating of the vehicle bodywork, in particular a lacquer, can be cured, be this by expelling solvents or by crosslinking the coating substance.

Bekannte als Trockner ausgestaltete Vorrichtungen der eingangs genannten Art besitzen üblicherweise eine Temperiereinrichtung, mit welcher die Fahrzeugkarosserie auf eine gewünschte Temperatur erwärmt wird. Hierzu wird die Fahrzeugkarosserie mittels Luftdüsen von der Seite her gleichmäßig mit temperierter Luft beaufschlagt.Known as dryer designed devices of the type mentioned above usually have a tempering, with which the vehicle body is heated to a desired temperature. For this purpose, the vehicle body is acted upon by means of air nozzles from the side evenly with tempered air.

Durch die Grundströmung wird die von der Luft mitgeführte Wärme zur Fahrzeugkarosserie geleitet und dort in die Fahrzeugkarosserie eingebracht. Für einen effektiven Temperaturübergang von der heißen Luft oder allgemein des temperierten Fluids in die Fahrzeugkarosserie - oder im Falle des Abkühlens aus dem Gegenstand in das Fluid - ist eine gute thermische Konvektion über die durch den Temperiertunnel geführte Luft erforderlich.Due to the basic flow, the heat carried by the air is conducted to the vehicle body and introduced there into the vehicle body. For an effective temperature transition of the hot air or generally the tempered fluid in the vehicle body - or in the case of cooling from the object into the fluid - a good thermal convection on the guided through the tempering tunnel air is required.

Bei einem Trockner wird daher stets möglichst hoch temperierte Luft zu den Fahrzeugkarosserien geleitet und hierzu ein entsprechend großes Luftvolumen durch den Temperiertunnel geführt. Dies ist jedoch verhältnismäßig energie- und ressourcenaufwendig.
Es ist daher Aufgabe der Erfindung, eine Vorrichtung der eingangs genannten Art zu schaffen, welche einen effektiven Temperaturübergang am Gegenstand bei einer guten Energiebilanz gewährleistet.In a dryer, air which is as high as possible is therefore always conducted to the vehicle bodies and for this purpose a correspondingly large volume of air is passed through the temperature control tunnel. However, this is relatively energy and resource consuming.
It is therefore an object of the invention to provide a device of the type mentioned, which ensures an effective temperature transition on the object with a good energy balance.

Diese Aufgabe wird durch einer Vorrichtung nach Anspruch 1 gelöst.This object is achieved by a device according to claim 1.

Die Erfindung beruht auf der Erkenntnis, dass durch die Erzeugung einer Art Unterstützungsströmung die thermische Konvektion, somit die Mitführung und Verteilung von Wärmeenergie, im temperierten Fluid effektiver wird. Durch die Konvektionsströmung wird zunächst grundsätzlich eine höhere Strömungsgeschwindigkeit am Gegenstand erzeugt, so dass dort schneller frisches temperiertes Fluid nachgeliefert wird, welches einen effektiven Wärmeeintrag in den Gegenstand hinein oder aus dem Gegenstand heraus bewirkt. Durch eine Injektordüse kann ein gezielt gerichteter Fluidstrahl erzeugt werden. Die Konvektionsströmung kann über einen großen Bereich des Tunnelquerschnitts wirken.The invention is based on the recognition that the generation of a kind of assisting flow makes the thermal convection, thus the entrainment and distribution of heat energy, more effective in the temperature-controlled fluid. Due to the convection flow, a higher flow velocity is initially generated on the object, so that fresh, tempered fluid is replenished there more quickly, which causes effective heat input into or out of the article. Through an injector nozzle, a targeted directed fluid jet can be generated. The convection flow can act over a large area of the tunnel cross-section.

Es ist von Vorteil, wenn gasförmiges Fluid durch die wenigstens eine Injektordüse mit einer Richtungskomponente in Richtung auf die wenigstens eine Auslassöffnung in den Temperiertunnel einblasbar ist. In diesem Fall wirkt die Konvektionsströmung in die gleiche Richtung, wie die Grundströmung.It is advantageous if gaseous fluid can be injected into the tempering tunnel through the at least one injector nozzle with a direction component in the direction of the at least one outlet opening. In this case, the convection flow acts in the same direction as the basic flow.

Es ist günstig, wenn wenigstens eine Injektordüse einer solchen Betriebsart vorhanden ist, bei der von der Injektordüse das temperierte gasförmige Fluid abgebbar ist. Die Injektordüse der ersten Betriebsart kann dabei z.B. aus der gleichen Quelle mit temperiertem Fluid gespeist werden, wie die Fluiddüsen.It is favorable if at least one injector nozzle of such a mode of operation is present, in which the tempered gaseous fluid can be delivered by the injector nozzle. The injector nozzle of the first mode may e.g. be fed from the same source with tempered fluid, such as the fluid nozzles.

Alternativ oder ergänzend kann wenigstens eine Injektordüse einer solchen Betriebsart vorhanden sein, bei welcher von der Injektordüse umgewälzte Tunnelatmosphäre abgebbar ist. In diesem Fall wird die vorhandene Wärmeenergie der Tunnelatmosphäre genutzt.Alternatively or additionally, at least one injector nozzle of such a mode of operation may be present, in which the tunnel atmosphere circulated by the injector nozzle can be discharged. In this case, the existing heat energy of the tunnel atmosphere is used.

Dabei ist es vorteilhaft, wenn die wenigstens eine Injektordüse über eine Umwälzleitung mit wenigstens einer Auslassöffnung des Temperiertunnels verbunden ist und Fördermittel vorhanden sind, so dass Tunnelatmosphäre von der wenigstens einen Auslassöffnung zur wenigstens einen Injektordüse förderbar ist.It is advantageous if the at least one injector nozzle is connected via a circulation line with at least one outlet opening of the tempering tunnel and conveying means are present so that tunnel atmosphere can be conveyed from the at least one outlet opening to the at least one injector nozzle.

Eine effektive Kreisströmung kann im Temperiertunnel erzeugt werden, wenn die wenigstens eine Auslassöffnung bezogen auf eine Hauptachse der Injektordüse radial neben dieser angeordnet ist.An effective circular flow can be generated in the temperature control tunnel, if the at least one outlet opening based on a main axis of the injector nozzle is disposed radially adjacent thereto.

Dabei ist es günstig, wenn die Auslassöffnung auf einer von der Abgaberichtung der Injektordüse abliegenden Seite der Injektordüse angeordnet ist. Auf diese Weise stört der Abgabestrahl der Injektordüse nicht die Kreisströmung im Temperiertunnel.It is advantageous if the outlet opening on a remote from the discharge direction of the injector nozzle side of the Injector nozzle is arranged. In this way, the discharge jet of the injector nozzle does not disturb the circular flow in the tempering tunnel.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der einzigen Figur näher erläutert. Diese zeigt einen vertikalen Schnitt eines Trockners zum Trocknen von beschichteten Fahrzeugkarosserien, wobei zwei Varianten einer Temperiereinrichtung veranschaulicht sind.Embodiments of the invention will be explained in more detail with reference to the single figure. This shows a vertical section of a dryer for drying coated vehicle bodies, wherein two variants of a tempering device are illustrated.

In der Figur bezeichnet 10 insgesamt eine Vorrichtung zum Temperieren von Gegenständen 12. Als Beispiel für Gegenstände 12 sind Fahrzeugkarosserien 14 gezeigt; die Vorrichtung 10 ist beispielhaft ein Trockner 16 für Fahrzeugkarosserien 14. Der Trockner 16 umfasst ein Gehäuse 18, in welchem ein Temperiertunnel 20 untergebracht ist.In the figure, 10 generally indicates a device for tempering articles 12. As an example of articles 12, vehicle bodies 14 are shown; the device 10 is an example of a dryer 16 for vehicle bodies 14. The dryer 16 includes a housing 18 in which a tempering tunnel 20 is housed.

Der Temperiertunnel 20 ist seitlich durch zwei vertikale Längswände 22, 24, unten durch einen Boden 26 und oben durch eine Tunneldecke 28 begrenzt. Die beschichteten Fahrzeugkarosserien 14 werden mittels eines schematisch dargestellten Transportsystems 30 durch den Temperiertunnel 20 gefördert. An den Stirnseiten des Temperiertunnels 20 sind im Allgemeinen nicht dargestellte Schleusen vorgesehen, welche den Durchgang der Fahrzeugkarosserien 14 in den Temperiertunnel 20 hinein und aus diesem heraus ohne großen Wärmeverlust und mit geringem Atmosphärenaustausch ermöglichen.The Temperiertunnel 20 is bounded laterally by two vertical longitudinal walls 22, 24, below by a bottom 26 and above by a tunnel ceiling 28. The coated vehicle bodies 14 are conveyed through the tempering tunnel 20 by means of a transport system 30 shown schematically. On the front sides of the temperature-controlled tunnel 20 locks are generally not provided, which allow the passage of the vehicle bodies 14 into the temperature control tunnel 20 in and out of this without much heat loss and with little exchange of atmosphere.

Beim Trocknen von frisch lackierten Fahrzeugkarosserien 14 werden hauptsächlich Lösemittel, aber auch Beschichtungsbestandteile in die Luft im Temperiertunnel 20 freigesetzt. Die derart beladene Tunnelatmosphäre wird daher mittels eines Absaugsystems 32 nach unten aus dem Temperiertunnel 20 abgesaugt. Die Tunnelatmosphäre wird über Absaugkästen 34 mit einer Absaugöffnung 34a aus dem Temperiertunnel 20 abgesaugt, die an dessen Boden 26 angeordnet sind und zu einem Abluftkanal 36 führen. Der Durchgangsquerschnitt des Abluftkanals 36 und damit das Absaugvolumen der Kabinenluft kann in an und für sich bekannter Weise durch eine verschwenkbare Klappe 38 eingestellt werden, die mit Hilfe eines Motors 40 verschwenkt werden kann.When drying freshly painted vehicle bodies 14, mainly solvents, but also coating components, are released into the air in the tempering tunnel 20. The thus loaded tunnel atmosphere is therefore sucked by means of an exhaust system 32 down from the temperature control tunnel 20. The tunnel atmosphere is sucked out of the tempering tunnel 20 via suction boxes 34 with a suction opening 34a, which are arranged at the bottom 26 and lead to an exhaust duct 36. The passage cross section of the exhaust air duct 36 and thus the exhaust volume of the cabin air can be adjusted in a manner known per se by a pivotable flap 38, which can be pivoted by means of a motor 40.

Durch das Absaugsystem 32 wird im Temperiertunnel 20 eine Grundströmung in Richtung auf die Absaugöffnungen 34a erzeugt. Beim vorliegenden Ausführungsbeispiel verläuft diese Grundströmung weitgehend von oben nach unten. Wenn die Absaugöffnungen 34a an anderer Stelle, beispielsweise an der Decke 28 des Temperiertunnels 20, angeordnet sind, verläuft auch die Grundströmung entsprechend anders.Through the exhaust system 32, a basic flow in the direction of the suction openings 34a is generated in the temperature control tunnel 20. In the present embodiment, this basic flow is largely from top to bottom. If the suction openings 34a are arranged elsewhere, for example on the ceiling 28 of the tempering tunnel 20, the basic flow also varies accordingly.

Im Temperiertunnel 20 ist eine Temperiereinrichtung 42 angeordnet. In Figur 1 zeigt die linke bzw. die rechte Seite jeweils eine Variante der Temperiereinrichtung 42.In tempering 20 a temperature control 42 is arranged. In FIG. 1 shows the left and the right side in each case a variant of the tempering device 42nd

Bei der ersten, in Figur 1 links zu erkennende Variante umfasst die Temperiereinrichtung 42 Seiten-Düsenanordnungen 44, welche die Fahrzeugkarosserie 14 zu beiden Seiten flankieren. Außerdem umfasst die Temperiereinrichtung 42 in an und für sich bekannter Weise mehrere, hier nicht eigens gezeigte Boden-Düsenanordnungen, die so angeordnet sind, dass sich die Fahrzeugkarosserien 14 über diese Boden-Düsenanordnungen hinweg bewegen können.At the first, in FIG. 1 left side to be recognized variant, the tempering device 42 includes side nozzle assemblies 44, which flank the vehicle body 14 on both sides. In addition, the tempering device 42 comprises, in a manner known per se, a plurality of bottom nozzle arrangements not shown here, which are arranged so that the vehicle bodies 14 can move over these floor nozzle arrangements.

Jede Seiten-Düsenanordnung 44 umfasst mehrere Fluiddüsen 46, mittels welchen ein Fluidstrahl aus einem temperierten Fluid auf die Fahrzeugkarosserien 14 abgegeben werden kann. Als temperiertes Fluid wird vorliegend erwärmte Luft verwendet; es sind jedoch auch andere Gase denkbar. Beim vorliegenden Ausführungsbeispiel können die Fluiddüsen 46 der Seiten-Düsenanordnungen 44 unabhängig voneinander aktiviert und angesteuert werden, so dass jede dieser Fluiddüsen 46 dazu in der Lage ist, temperierte Luft unabhängig von den übrigen Fluiddüsen 46 der Temperiereinrichtung 42 auf die Fahrzeugkarosserie 14 abzugeben.Each side nozzle arrangement 44 comprises a plurality of fluid nozzles 46, by means of which a fluid jet of a tempered fluid can be delivered to the vehicle bodies 14. As tempered fluid presently heated air is used; However, other gases are conceivable. In the present embodiment, the fluid nozzles 46 of the side nozzle assemblies 44 can be independently activated and driven so that each of these fluid nozzles 46 is capable of delivering tempered air to the vehicle body 14 independently of the remaining fluid nozzles 46 of the tempering device 42.

Hierzu werden die Fluiddüsen 46 der Seiten-Düsenanordnungen 44 jeweils über separate Zuleitungen 48 mit temperierter Luft versorgt, in welchen jeweils ein Ventil 50 angeordnet ist, von denen jedes über eine Steuerung 52 isoliert angesteuert werden kann.For this purpose, the fluid nozzles 46 of the side nozzle assemblies 44 are each supplied via separate supply lines 48 with tempered air, in each of which a valve 50 is arranged, each of which can be controlled via a controller 52 isolated.

Die Zuleitungen 48 gehen von einem Verteilerkanal 54 ab, welcher an der Decke 28 des Temperiertunnels 20 an dessen Längswänden 22 verläuft und über einen Zuleitungskanal 56 von außerhalb des Gehäuses 18 mit Luft aus einer nicht eigens gezeigten Quelle gespeist wird, die zuvor in an und für sich bekannter Art und Weise temperiert und konditioniert wurde. Der Durchgangsquerschnitt des Zuleitungskanals 56 und damit das Zustromvolumen der Kabinenluft kann in an und für sich bekannter Weise durch eine verschwenkbare Klappe 58 eingestellt werden, die mit Hilfe eines Motors 60 verschwenkt werden kann.The leads 48 start from a distribution channel 54, which extends to the ceiling 28 of the tempering 20 at its longitudinal walls 22 and is fed via a feed channel 56 from outside the housing 18 with air from a source not shown separately, previously in and for was tempered and conditioned in a known manner. The passage cross section of the supply passage 56 and thus the influx volume of the cabin air can be adjusted in a manner known per se by a pivotable flap 58, which can be pivoted by means of a motor 60.

Die Fluiddüsen 46 der Seiten-Düsenanordnungen 44 sind so positioniert, dass insbesondere massereiche Bereiche der Fahrzeugkarosserie 14 mit temperierter Luft beaufschlagt werden können. Hierzu sind die Fluiddüsen 46 beim vorliegenden Ausführungsbeispiel von unten nach oben dem Schwellerbereich, einem mittleren Bereich und einem oberen Bereich der Fahrzeugkarosserie 14 nahe der Dachreling zugeordnet.The fluid nozzles 46 of the side nozzle arrangements 44 are positioned so that in particular massive regions of the vehicle body 14 can be acted upon by tempered air. For this purpose, the fluid nozzles 46 are assigned in the present embodiment from bottom to top of the sill area, a central area and an upper portion of the vehicle body 14 near the roof rail.

Beim vorliegenden Ausführungsbeispiel sind die Fluiddüsen 46 stationär und die Abgaberichtung ist unveränderlich. Bei einer Abwandlung können die Fluiddüsen 46 der Seiten-Düsenanordnungen 44 in der Horizontalen geschwenkt werden, so dass die Strahlrichtung eines von den Fluiddüsen 46 jeweils erzeugten Fluidstrahls verändert und eingestellt und der Fluidstrahl z.B. mit einer sich bewegenden Fahrzeugkarosserie 14 mitgeführt werden kann. Hierzu sind entsprechende Antriebe vorhanden, die gegebenenfalls mit der Steuerung 52 zusammenarbeiten. Ein solcher Antrieb kann ein Elektromotor sein, aber auch hydraulisch oder pneumatisch arbeiten. Gegebenenfalls kann auch auf die Antriebe verzichtet werden. In diesem Fall kann Schwenkposition der Fluiddüsen 46 z.B. von Hand eingestellt werden.In the present embodiment, the fluid nozzles 46 are stationary and the dispensing direction is fixed. In a modification, the fluid nozzles 46 of the side nozzle assemblies 44 may be pivoted in the horizontal direction, so the jet direction of a fluid jet respectively generated by the fluid nozzles 46 can be changed and adjusted, and the fluid jet can be carried, for example, with a moving vehicle body 14. For this purpose, corresponding drives are present, which optionally cooperate with the controller 52. Such a drive can be an electric motor, but also work hydraulically or pneumatically. Optionally, can be dispensed with the drives. In this case, pivot position of the fluid nozzles 46 can be adjusted, for example, by hand.

Die Bewegung der Fluiddüsen 46 kann auch derart ausgeführt werden, dass gezielt Turbulenzen auf der Oberfläche der Fahrzeugkarosserie 14 erzeugt werden, wodurch die Abtrocknung beschleunigt werden kann. Beispielsweise können die Fluiddüsen 46 beim Vorüberfahren der Fahrzeugkarosserie 14 hin- und herbewegt werden.The movement of the fluid nozzles 46 can also be performed such that targeted turbulence is generated on the surface of the vehicle body 14, whereby the drying can be accelerated. For example, the fluid nozzles 46 can be reciprocated while driving over the vehicle body 14.

Bei der zweiten, in Figur 1 rechts zu erkennende Variante umfasst die Temperiereinrichtung 42 Seiten-Düsenanordnungen 62, welche die Fahrzeugkarosserie 14 ebenfalls zu beiden Seiten flankieren, jedoch anders ausgebildet sind als die Seiten-Düsenanordnungen 44 der ersten Variante. Auch bei der zweiten Variante umfasst die Temperiereinrichtung 42 die oben angesprochenen, nicht eigens gezeigte Boden-Düsenanordnungen.At the second, in FIG. 1 right side to be recognized variant includes the tempering 42 side nozzle assemblies 62, which flank the vehicle body 14 also on both sides, but are designed differently than the side nozzle assemblies 44 of the first variant. Also in the second variant, the tempering device 42 includes the above-mentioned, not specifically shown bottom nozzle assemblies.

Bei den Seiten-Düsenanordnungen 62 dienen die vertikalen Längswände 22, 24 des Temperiertunnels 20 als Zwischenwand, welche den Temperiertunnel 20 von zwei seitlichen Druckräumen 64 abtrennen, die den Temperiertunnel 20 nun flankieren. Die Druckräume 64 und der Temperiertunnel 20 sind dort von dem Gehäuse 18 umgeben.In the case of the side nozzle arrangements 62, the vertical longitudinal walls 22, 24 of the tempering tunnel 20 serve as an intermediate wall, which separates the tempering tunnel 20 from two lateral pressure chambers 64, which now flank the tempering tunnel 20. The pressure chambers 64 and the temperature control tunnel 20 are surrounded by the housing 18.

In den beiden Längswänden 22, 24 befindet sich jeweils eine Vielzahl von Fluiddüsen 66, welche eine Verbindung zwischen den Druckräumen 64 und dem Temperiertunnel 20 herstellen. Beim vorliegenden Ausführungsbeispiel sind die Fluiddüsen 66 in ihrer Ausrichtung stationär.In the two longitudinal walls 22, 24 is one each Variety of fluid nozzles 66, which establish a connection between the pressure chambers 64 and the Temperiertunnel 20. In the present embodiment, the fluid nozzles 66 are stationary in orientation.

Bei einer nicht eigens gezeigten Abwandlung können die Fluiddüsen 66 jedoch auch beweglich gelagert sein, so dass deren Position, d.h. deren Winkelstellung und Abgaberichtung eingestellt werden kann. Hierzu können die Fluiddüsen 66 beispielsweise jeweils ein Kalottenteil umfassen, mit welchem sie in einer hierzu komplementären Lageröffnung mit kugelkalottenförmigen Begrenzungswänden in den Längswänden 22, 24 einsitzen. Hierdurch können die Fluiddüsen 66 dann in den Lageröffnungen verschwenkt werden.However, in a modification not specifically shown, the fluid nozzles 66 may also be movably supported so that their position, i. E. whose angular position and discharge direction can be adjusted. For this purpose, the fluid nozzles 66 can each comprise, for example, a dome part, with which they are seated in a longitudinal bearing wall 22, 24 in a complementary bearing opening with spherical-cap-shaped boundary walls. As a result, the fluid nozzles 66 can then be pivoted in the bearing openings.

Die Druckräume 64 werden in bekannter Weise mit temperierter Luft gespeist, die dann durch die Fluiddüsen 66 strömt und von diesen in den Temperiertunnel 20 abgegeben und in Richtung auf die Fahrzeugkarosserien 14 geleitet wird.The pressure chambers 64 are fed in a known manner with tempered air, which then flows through the fluid nozzles 66 and discharged from them into the temperature control tunnel 20 and directed in the direction of the vehicle bodies 14.

Beide Seiten-Düsenanordnungen 44 oder 62 können Kurzstrahldüsen und Weitstrahldüsen umfassen. Bei Kurzstrahldüsen handelt es sich um Düsen mit einer so kurzen Abgabeweite, dass sie die ihnen zugewandte Seite der Fahrzeugkarosserie 14 beaufschlagen können. Weitstrahldüsen haben dagegen eine größere Abgabeweite als Kurzstrahldüsen, wodurch es möglich ist, die aus den Weitstrahldüsen austretende Heißluft durch eine Öffnung in der zugewandten Seitenfläche der Fahrzeugkarosserien 14, beispielsweise durch eine Fensteröffnung oder durch eine geöffnete Tür, auf die Innenfläche der gegenüberliegenden Karosserieseite zu richten, so dass also der Luftstrom den gesamten Innenraum der Fahrzeugkarosserie 14 durchquert. Die Richtung dieser Heißluft ist dabei so, dass sie vornehmlich auf den unteren, inneren Bereich der Fahrzeugkarosserie 14 gerichtet ist, wo verhältnismäßig viel Masse und daher eine große Wärmekapazität vorhanden ist.Both side nozzle assemblies 44 or 62 may include short jet nozzles and wide jet nozzles. Short jet nozzles are nozzles with such a short discharge width that they can act on the side of the vehicle body 14 facing them. Wide jet nozzles, on the other hand, have a greater discharge width than short jet nozzles, which makes it possible to direct the hot air emerging from the jet nozzles through an opening in the facing side surface of the vehicle bodies 14, for example through a window opening or through an opened door, onto the inner surface of the opposite body side, so that the air flow thus traverses the entire interior of the vehicle body 14. The direction of this hot air is such that it is directed primarily to the lower, inner region of the vehicle body 14, where relatively much Mass and therefore a large heat capacity is present.

Für einen effektiven Temperaturübergang von der heißen Luft in die Fahrzeugkarosserie ist eine gute thermische Konvektion über die durch den Temperiertunnel 20 geführte Luft erforderlich. Damit stets möglichst hoch temperierte Luft zu den Fahrzeugkarosserien 14 gelangt, muss ein entsprechend großes Luftvolumen durch den Temperiertunnel 20 geführt werden.For an effective temperature transition from the hot air into the vehicle body, a good thermal convection over the guided through the temperature control tunnel 20 air is required. In order to ensure that air, which is as high as possible, always reaches the vehicle bodies 14, a correspondingly large volume of air must be passed through the temperature control tunnel 20.

Um das benötigte Luftvolumen und insgesamt die erforderlichen Ressourcen zu verringern, umfasst die Temperiervorrichtung 10 eine Konvektionseinrichtung 68, mit deren Hilfe eine gerichtete thermische Konvektion im Temperiertunnel 20 unterstützt wird. Hierdurch wird die Verteilung der thermischen Energie in der Luft im Temperiertunnel 20 derart beeinflusst, dass die von der Tunnelatmosphäre mitgeführte thermische Energie effektiv in die Fahrzeugkarosserien 14 eingebracht und dadurch wirkungsvoll ausgenutzt wird.In order to reduce the required air volume and the total resources required, the temperature control device 10 comprises a convection device 68, with the help of which a directed thermal convection in the temperature control tunnel 20 is supported. As a result, the distribution of the thermal energy in the air in the temperature control tunnel 20 is influenced in such a way that the thermal energy entrained in the tunnel atmosphere is effectively introduced into the vehicle bodies 14 and thereby utilized effectively.

Zu diesem Zweck umfasst die Konvektionseinrichtung 68 Injektordüsen 70, welche in einem oberen Bereich nahe oder an der Decke 28 des Temperiertunnels 20 angeordnet sind und Luft mit einer Richtungskomponente in Richtung auf die Auslassöffnungen 34a in den Temperiertunnel 20 einblasen.For this purpose, the convection device 68 comprises injector nozzles 70, which are arranged in an upper region near or on the ceiling 28 of the tempering tunnel 20 and blow air into the tempering tunnel 20 with a directional component in the direction of the outlet openings 34a.

Im Allgemeinen sind die Injektordüsen 70 auf einer Seite des Temperiertunnels 20 angeordnet, welche den Absaugöffnungen 34a gegenüberliegt.In general, the injector nozzles 70 are arranged on one side of the tempering tunnel 20, which faces the suction openings 34a.

Injektordüsen 70 einer ersten Betriebsart können bei einem ersten Ausführungsbeispiel der Konvektionseinrichtung 68 aus derselben Quelle mit Luft gespeist werden, wie die Temperiereinrichtung 42. In der Figur ist dies am Beispiel der ersten, in Figur 1 links zu erkennende Variante der Temperiereinrichtung 42 veranschaulicht. Dort werden die Injektordüsen 70 über den Verteilerkanal 54 mit Luft versorgt.In a first embodiment of the convection device 68, injector nozzles 70 of a first operating mode can be supplied with air from the same source, such as the tempering device 42. In the figure, this is illustrated by the example of the first, in FIG FIG. 1 left to be recognized variant of the tempering 42 illustrates. There, the injector nozzles 70 are supplied via the distribution channel 54 with air.

Bei einer nicht eigens gezeigten Abwandlung kann den Injektordüsen 70 auch aus einer autarken Luftquelle Luft zugeführt werden.In a modification not specifically shown, the injector nozzles 70 may also be supplied with air from a self-sufficient air source.

Bei einem zweiten Ausführungsbeispiel der Konvektionseinrichtung 68 sind Injektordüsen 70 einer zweiten Betriebsart vorhanden, von denen umgewälzte Tunnelatmosphäre abgegeben werden kann. Injektordüsen 70 der zweiten Betriebsart sind Komponenten einer Umwälzeinrichtung 72, die bei der zweiten, in der Figur rechts gezeigten Variante der Temperiereinrichtung 42 gezeigt ist. Dort befinden sich Auslassöffnungen 74 im oberen Bereich des Temperiertunnels 20, welche über eine Umwälzleitungen 76 mit einer oder mehreren der Injektordüsen 70 verbunden sind. Die Auslassöffnungen 74 sind dabei auf einem Höhenniveau oberhalb der Injektordüsen 70 angeordnet.In a second embodiment of the convection device 68, injector nozzles 70 of a second operating mode are provided, from which circulated tunnel atmosphere can be discharged. Injector nozzles 70 of the second operating mode are components of a circulation device 72 which is shown in the second variant of the tempering device 42 shown on the right in the figure. There are outlet openings 74 in the upper region of the temperature-controlled tunnel 20, which are connected via a recirculation lines 76 with one or more of the injector nozzles 70. The outlet openings 74 are arranged at a height level above the injector nozzles 70.

Vorliegend sind die Auslassöffnungen 74 bezogen auf eine nicht eigens gezeigte Hauptachse der Injektordüse 70 radial neben dieser angeordnet. Grundsätzlich können die Auslassöffnungen 74 aber auch an einem anderen Ort des Temperiertunnels 20 positioniert sein.In the present case, the outlet openings 74 are arranged radially relative to a main axis (not specifically shown) of the injector nozzle 70. In principle, however, the outlet openings 74 can also be positioned at a different location of the tempering tunnel 20.

In jeder Umwälzleitung 76 befinden sich als Fördermittel ein Gebläse 78 und ein Ventil 80, welche beide mittels der Steuerung 52 gesteuert werden. Bei aktivem Gebläse 78 und geöffnetem Ventil 80 wird somit Tunnelatmosphäre oberhalb der Injektordüsen 70 abgesaugt, zu den Injektordüsen 70 geführt und durch diese nach unten in den Temperiertunnel 20 abgegeben.In each circulation line 76 are located as a conveying means, a fan 78 and a valve 80, both of which are controlled by the controller 52. With active fan 78 and opened valve 80 thus tunnel atmosphere is sucked above the injector nozzles 70, led to the injector nozzles 70 and discharged through this down into the temperature control tunnel 20.

Durch die Konvektionseinrichtung 68 wird unabhängig von ihrer Arbeitsweise zusätzlich zur Grundströmung eine die Grundströmung unterstützende Konvektionsströmung erzeugt. Beim vorliegenden Ausführungsbeispiel führt diese außen an den Fahrzeugkarosserien 14 entlang, so dass abgekühlte Luft, deren Wärmeenergie bereits in die Fahrzeugkarosserie 14 eingebracht wurde, rasch abtransportiert wird und durch nachströmende heißere Luft ersetzt werden kann.By the convection device 68 is independent of their operation in addition to the basic flow one Basic flow supporting convective flow generated. In the present embodiment, this leads along the outside of the vehicle bodies 14, so that cooled air, whose heat energy has already been introduced into the vehicle body 14, is rapidly transported away and can be replaced by hot air flowing in later.

Durch die Konvektionseinrichtung 68 kann im Temperiertunnel 20 eine stärkere Strömung mit weniger Luft erzeugt werden, als es ohne Konvektionseinrichtung 68 und insbesondere ohne die Injektordüsen 70 möglich ist.By means of the convection device 68, a stronger flow with less air can be generated in the tempering tunnel 20 than is possible without the convection device 68 and in particular without the injector nozzles 70.

Bei der Umwälzeinrichtung 72 bildet sich bezogen auf den Tunnelquerschnitt eine Kreisströmung im Temperiertunnel 20 aus, die über die Injektordüsen 70 an den Außenflanken der Fahrzeugkarosserien 14 entlang zum Boden 26 des Temperiertunnels 20, dort zu dessen Mitte und von da nach oben zur Decke 28 des Temperiertunnels 20 führt, wo die Luft dann zur Seite über die Auslassöffnungen 74 abgesaugt werden. Wenn zwei Umwälzeinrichtungen 72 zu beiden Seiten des Temperiertunnels 20 vorhanden sind, bilden sich dementsprechend zwei solcher Kreisströmungen aus.In the case of the circulation device 72, a circular flow is formed in the tempering tunnel 20 via the injector nozzles 70 on the outer flanks of the vehicle bodies 14 to the bottom 26 of the tempering tunnel 20, there to its center and from there up to the ceiling 28 of the tempering tunnel 20 leads where the air is then sucked off to the side via the outlet openings 74. Accordingly, if there are two circulating devices 72 on both sides of the tempering tunnel 20, two such circulatory flows are formed.

Diese Kreisströmungen bilden sich insbesondere dadurch aus, dass die Auslassöffnungen 74 oberhalb der Injektordüsen 70 bzw. allgemein ausgedrückt auf einer von der Abgaberichtung der Injektordüse 70 abliegenden Seite der Injektordüse 70 angeordnet sind.These circular flows are formed, in particular, in that the outlet openings 74 are arranged above the injector nozzles 70 or, more generally, on a side of the injector nozzle 70 remote from the discharge direction of the injector nozzle 70.

Claims (7)

  1. A device for tempering objects, in particular for drying coated vehicle bodies or body parts, having
    a) a housing (18);
    b) a tempering tunnel (20) accommodated in the housing (18), wherein the objects (14) can be conveyed through the tempering tunnel (20) by means of a transport system (30);
    c) a tempering device (42) for tempering the objects (14) using a tempered gaseous fluid, the tempering device (42) comprising fluid nozzles (46; 66) by means of which a jet of fluid can be discharged onto the objects (14) in each case;
    d) a suction system (32) by means of which tunnel atmosphere can be suctioned through at least one suction opening (34a), whereby a base current is generated in the tempering tunnel (20) in the direction towards the at least one suction opening (34a);
    e) a convection device (68) by means of which a convection current, which supports the base current, can be generated in addition to the base current;
    wherein
    f) the convection device (42) comprises one or more injector nozzles (70) by means of which gaseous fluid can be blown into the tempering tunnel (20);
    g) the at least one injector nozzle (70) is arranged on a side of the tempering tunnel (20) which is opposite the at least one suction opening (34a);
    and
    h) the at least one suction opening (34a) is arranged on the floor (26) and the at least one injector nozzle (70) is arranged in an upper region near to or on the ceiling (28) of the tempering tunnel (20), such that the convection current can act over a large area of the tunnel cross-section.
  2. A device according to Claim 1, characterised in that gaseous fluid can be blown into the tempering tunnel (20) through the at least one injector nozzle (70) with a directional component in the direction towards the at least one outlet opening (34a).
  3. A device according to Claim 1 or 2, characterised in that at least one injector nozzle (70) is present, whereof the mode of operation is such that the tempered gaseous fluid can be discharged by the injector nozzle (70).
  4. A device according to one of Claims 1 to 3, characterised in that at least one injector nozzle (70) is present, whereof the mode of operation is such that circulated tunnel atmosphere can be discharged by the injector nozzle (70).
  5. A device according to Claim 4, characterised in that the at least one injector nozzle (70) is connected to at least one outlet opening (74) of the tempering tunnel (20) by way of a circulating line (76) and delivery means are present so that tunnel atmosphere can be delivered from the at least one outlet opening (74) to the at least one injector nozzle (70).
  6. A device according to Claim 5, characterised in that the at least one outlet opening (76) is arranged radially adjacent to the injector nozzle (70) relative to a main axis of this latter.
  7. A device according to Claim 6, characterised in that the outlet opening is arranged on a side of the injector nozzle (70) which is remote from the discharge device of the injector nozzle (70).
EP14700429.5A 2013-01-17 2014-01-04 Device for controlling the temperature of objects Revoked EP2946158B1 (en)

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DE102015214711A1 (en) 2015-07-31 2017-02-02 Dürr Systems Ag Treatment plant and method for treating workpieces
DE102015214706A1 (en) 2015-07-31 2017-02-02 Dürr Systems Ag Treatment plant and method for treating workpieces
DE102016113062A1 (en) * 2016-07-15 2018-01-18 Eisenmann Se Device, system and method for tempering workpieces
DE102018115234A1 (en) * 2018-06-25 2020-01-02 Eisenmann Se Temperature control device for tempering objects

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EP1302737A2 (en) 2001-10-12 2003-04-16 Dürr Systems GmbH Hot air dryer for a coating installation
DE10147199A1 (en) 2001-09-25 2003-04-24 Olt Oberflaechen Luft Und Troc Convection drying process for paint layers on vehicle bodies, railway carriages, etc. uses drying booth with ventilator to provide drying air, and regulator flaps to vary air flow direction around vehicle
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Publication number Priority date Publication date Assignee Title
US4908231A (en) 1986-09-08 1990-03-13 Bgk Finishing Systems, Inc. Automobile coating heat treating process
EP0268691A1 (en) 1986-11-20 1988-06-01 Thomas Lammers Device for drying construction parts furnished with a surface layer
EP0706021A1 (en) 1994-10-08 1996-04-10 Dürr GmbH Dryer for a painting installation
GB2331579A (en) 1997-11-21 1999-05-26 Honda Motor Co Ltd Paint curing oven
JP2000197845A (en) 1998-11-05 2000-07-18 Honda Motor Co Ltd Drying furnace for coating
WO2002073109A1 (en) 2001-03-12 2002-09-19 Dürr Systems GmbH Hot air dryer for a coating installation
DE10147199A1 (en) 2001-09-25 2003-04-24 Olt Oberflaechen Luft Und Troc Convection drying process for paint layers on vehicle bodies, railway carriages, etc. uses drying booth with ventilator to provide drying air, and regulator flaps to vary air flow direction around vehicle
EP1302737A2 (en) 2001-10-12 2003-04-16 Dürr Systems GmbH Hot air dryer for a coating installation
DE202004014233U1 (en) 2004-09-09 2004-11-18 Lutro Luft- Und Trockentechnik Gmbh Ventilation device for painting and drying plants especially for vehicles has air delivery holes in filter cover extending along or across it and directed into chamber of booth with formation of air curtain
WO2010122121A2 (en) 2009-04-24 2010-10-28 Dürr Systems GmbH Drying and/or curing installation
WO2011160778A1 (en) 2010-06-23 2011-12-29 Eisenmann Ag Drier
DE102010043087A1 (en) 2010-10-28 2012-05-03 Dürr Systems GmbH Process chamber with device for injecting gaseous fluid

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RU2645845C2 (en) 2018-02-28
EP2946158A1 (en) 2015-11-25
PL2946158T3 (en) 2019-04-30
US20150354890A1 (en) 2015-12-10
US10533797B2 (en) 2020-01-14
WO2014111237A1 (en) 2014-07-24
CN104919261A (en) 2015-09-16
CN104919261B (en) 2018-01-12
RU2015134207A (en) 2017-02-20
DE102013000754A1 (en) 2014-07-31

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