EP2773914B1 - Apparatus and method for controlling the temperature of objects - Google Patents

Apparatus and method for controlling the temperature of objects Download PDF

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Publication number
EP2773914B1
EP2773914B1 EP12778242.3A EP12778242A EP2773914B1 EP 2773914 B1 EP2773914 B1 EP 2773914B1 EP 12778242 A EP12778242 A EP 12778242A EP 2773914 B1 EP2773914 B1 EP 2773914B1
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EP
European Patent Office
Prior art keywords
temperature
temperature control
vehicle body
control device
zone
Prior art date
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Active
Application number
EP12778242.3A
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German (de)
French (fr)
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EP2773914A1 (en
Inventor
Herbert Schulze
Daniel Sluka
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Eisenmann SE
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Eisenmann SE
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Priority to PL12778242T priority Critical patent/PL2773914T3/en
Publication of EP2773914A1 publication Critical patent/EP2773914A1/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
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
    • 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
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/283—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun in combination with convection
    • 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
    • F26B21/004—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
    • 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
    • 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
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
    • F26B3/305—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements the infrared radiation being generated by combustion or combustion gases

Definitions

  • the invention relates to a method for controlling the temperature of objects, in particular for drying coated vehicle bodies, in which objects are transported through a tempering tunnel and tempered by means of at least one tempering device, wherein locally limited areas of the object are tempered targeted by means of a Lokaltemperier worn in a Wegemperierzone, which is located in the transport direction behind a tempering zone, in which the object is tempered as a whole.
  • vehicle body here not only the complete vehicle body are understood, but also such large body parts, in which the problems outlined below in the same way.
  • tempered air is understood to mean that which has the temperature required for temperature control of the vehicle body.
  • the following description of the invention in detail is based on the example of such a dryer.
  • drying refers to all processes in which the coating of the vehicle body, in particular, a paint, can be brought to cure, be it by expelling solvents or by crosslinking of the coating substance.
  • Known as dryer designed devices of the type mentioned above usually have a tempering in Temperiertunnel in which the vehicle body is heated as a whole to a desired temperature.
  • a pressure chamber may be present; tempered air can be discharged through nozzles to the outer surface and optionally also to the inner surface of the vehicle body via these pressure chambers.
  • Vehicle bodies have recently become increasingly complicated in structure. In particular, they have different masses in different areas. For example, the lowermost area, the sill area or the floor area, is heavily massed and therefore has a considerable heat capacity.
  • the heating of the different areas of the vehicle body which takes place from only one side, takes a considerable time until the heat has completely penetrated these areas. In addition, this time differs locally, depending on how precisely in each area the mass distribution and the distribution of heat capacities is.
  • the vehicle body as a whole is tempered as a whole over a certain period of time with the tempering device. Due to the different masses of the body parts, however, areas or parts of the vehicle body may have different temperatures, which in some parts may also be below a required minimum temperature for the best possible drying process, although other areas and parts of the vehicle body already have the required target temperature or even exceed.
  • the residence time of the vehicle body to be dried in the dryer is usually adjusted to the longest time that the worst case, most massed area of the vehicle body needs to dry.
  • the cycle times of the dryer are extended; moreover, in those areas and those parts of the vehicle body that dry faster, overheating take place. This can have a disadvantageous effect especially where different, even temperature-sensitive materials are installed in the vehicle body and / or adhesions have been made.
  • Object of the present invention is to provide a device and a method of the type mentioned, which take into account this idea.
  • tempering units of Lokaltemperier leaders are designed as air nozzles through which tempered air can be delivered to the object.
  • the device is set up such that certain areas of the object, in particular the vehicle body, can be tempered in a targeted manner, without this having the same influence on other and in particular adjacent areas of these targeted areas of the object and without at the same time other and in particular adjacent areas of these specifically tempered areas of the article must be tempered. Because of that Local tempering is arranged in a Wegemperierzone, which is located in the transport direction behind a tempering in which the article is tempered as a whole, the vehicle body is treated after the actual tempering for drying as it were by particular tempered parts are specifically tempered. It can be used in a favorable manner on established techniques when tempering the Lokaltemperier nails are designed as air nozzles through which tempered air can be delivered to the object.
  • a kind of temperature profile can be created by the vehicle body, which provides information about which areas of the vehicle body still need to be tempered. If the detection device is present, it can be used to determine beforehand which areas or parts of the vehicle body require a night temperature control. With a uniform deviation from the target temperature up or down at all detection points, the overall energy level can be detected and readjusted if necessary.
  • the detection device comprises a plurality of temperature sensors, by which at least the outer contour of the object is largely detectable.
  • temperature sensors preferably infrared sensors, e.g. in the form of IR cameras, laser temperature sensor or the like into consideration.
  • the article can simply be guided past the temperature sensors or through the portal formed by them during transport through the tempering tunnel.
  • a further local tempering device is arranged in a pre-tempering zone, which is located in the transport direction in front of a tempering zone in which the article as a whole is tempered.
  • a pre-tempering zone which is located in the transport direction in front of a tempering zone in which the article as a whole is tempered.
  • mass-afflicted areas and parts of the vehicle body can be pre-tempered, so that the actual temperature of the vehicle body can be done as a whole faster and more energy efficient.
  • the temperature control units of the local temperature control device is movable, so that its main radiation direction can be adjusted.
  • the main beam direction is intended to define the direction in which a temperature control unit develops its greatest effect.
  • tempering units of the local tempering device can be designed as heat radiators.
  • infrared radiators and dark radiators are used.
  • the above-mentioned object is achieved in that tempered air is discharged through formed as air nozzles tempering the Lokaltemperier worn on the object.
  • Targeted temperature control also here means that - again using the example of the vehicle body - certain areas of the vehicle body can be specifically tempered without this having the same influence on other and especially adjacent areas of these targeted temperature areas of the vehicle body and at the same time without others and in particular adjacent areas of these targeted tempered areas of the vehicle body must be tempered.
  • the locally limited regions of the object are determined by means of a detection device, by means of which a temperature distribution at the surface of the object is detected.
  • FIG. 1 Referenced.
  • a generally designated 10 dryer for coated vehicle bodies 12 which in a known manner comprises a housing 14 in which a tempering 16 is housed.
  • the tempering tunnel 16 comprises a tempering zone 18, whose interior is divided by two vertical longitudinal walls 20, 22 into two lateral pressure chambers 24, 26 and an intermediate central drying tunnel 28.
  • the coated vehicle bodies 12 are conveyed through the tempering tunnel 16 by means of a transport system 30 shown schematically.
  • a transport system 30 shown schematically.
  • locks are generally not shown provided which allow the passage of the vehicle body 12 into the temperature control tunnel 16 in and out of this without much heat loss and with little exchange of atmosphere.
  • each a plurality of short jet nozzles 32 and wide jet nozzles 34 which establish a connection between the pressure chambers 24, 26 and the drying tunnel 28.
  • the pressure chambers 24, 26 are fed in a known manner with tempered air, which then flows through both the short jet nozzles 32 and through the wide jet nozzles 34 and discharged from them into the drying tunnel 28 and directed in the direction of the vehicle body 12.
  • a tempering device in the form of a Volltemperier responded 35 is formed, by means of which the vehicle bodies 12 as Whole tempered.
  • the short jet nozzles 32 are nozzles with such a short discharge width that they can act on the side of the vehicle body 12 facing them. Such short jet nozzles 32 are known per se. Their jet direction is adjustable, for which purpose the short jet nozzles 32 can be located, for example, in openings in the longitudinal walls 20, 22 with spherical capped boundary walls, whereby the short jet nozzles 32 are adjustably guided in their angular position.
  • the wide-jet nozzles 34 have a larger discharge width than the short-jet nozzles 32, whereby it is possible to discharge the hot air discharged from the wide-jet nozzles 34 through an opening in the facing side surface of the vehicle bodies 12, for example, through a window opening or through an opened door directed to the opposite body side, so that thus the hot air flow traverses the entire interior of the vehicle body 12.
  • the direction of this hot air is such that it is directed primarily to the lower, inner region of the vehicle body 12, where relatively much mass and therefore a large heat capacity is present.
  • the tempering tunnel 16 comprises a test zone 36 and a Wegemperierzone 38 for Grep Schlue the vehicle body 12, which are located in the transport direction behind the tempering zone 18, in which the vehicle body is tempered as a whole.
  • the test zone 36 is located in the transport direction before the Wegemperierzone 38.
  • a detection device 40 is arranged, which is traversed by the vehicle body to be checked 12 after the tempering zone 18 and with which the temperature distribution on the surface of the vehicle body 12 can be detected.
  • the detection device 40 comprises a plurality of temperature sensors 42, as they are known per se.
  • this infrared sensors for example in the form of IR cameras, laser temperature sensor or the like in question.
  • the temperature sensors 42 are arranged like a portal, as it is in FIG. 2 it can be seen where not all temperature sensors 42 carry a reference numeral.
  • the outer contour of the vehicle body 12 can be largely covered by the detection range of the temperature sensors 42 when the vehicle body 12 passes by the temperature sensors 42.
  • a support structure for the temperature sensors 42 is not shown for the sake of simplicity.
  • the detection of the temperature distribution on the surface of the vehicle body 12 does not mean that always a complete surface image of the vehicle body 12 is created or must be. It may, for example, also only be desired to check in the test zone 36 whether certain Areas of the vehicle body 12, for example, the sill area, have a required set temperature.
  • the information density about the temperature distribution on the surface of the vehicle body 12 thus depends on the number and / or the arrangement of the temperature sensors 42.
  • the demoemperierzone 38 now includes in turn a limited by longitudinal walls 44 and 46
  • Mapatunnel 48 in which by means of a further temperature control in the form of Lokaltemperier coupled 50 locally limited areas of the vehicle body 12 can be specifically controlled temperature.
  • the longitudinal walls 44 and 46 carry as temperature units a plurality of air nozzles 52 which are independently activated and controlled, so that each air nozzle 52 is capable of tempered air regardless of the remaining air nozzles 52 of the Lokaltemperier coupled 50 to the vehicle body 12 deliver.
  • each air nozzle 52 is supplied via a separate supply line 54 with tempered air
  • the supply lines 54 to the air nozzles 52 on a longitudinal wall 44, 46 via a respective only in FIG. 3 to be recognized distribution device 56 can be supplied with either tempered air or not.
  • not all leads 54 are provided with a reference numeral.
  • the tempering units i. here the air nozzles 52, arranged from bottom to top in four groups A, B, C and D.
  • the group A is assigned to the floor group, the group B to the sill area, the group C to a middle area and the group D to an upper area of the vehicle body 12 near the roof rail.
  • air nozzles 52 of the groups B, C and D flank the vehicle body 12 on both sides.
  • the detection device 40 When the vehicle body 12 passes from the tempering zone 18, the detection device 40, their temperature sensors 42 produce output signals which are received by control units 58, evaluated and processed into control signals, which in turn the air nozzles 52 of the Lokaltemperier listening 50 is controlled in the Heilemperierzone 38. From the output signals of the temperature sensors 42, the control units 58 can generate a temperature data set and from this a temperature profile from which local temperature differences on the surface of the vehicle body 12 can be derived. The information thus obtained can then be compared with a stored body type-dependent temperature profile, so that the Lokaltemperier couples 50 can be controlled accordingly in the Wegemperierzone 38.
  • the data density that can be obtained with the detection device 40 depends on the number and type of temperature sensors 42 used. Even when measuring only two points of the vehicle body 12, a correspondingly low-resolution temperature profile can be created.
  • the control units 58 activate the distributor device 56 in such a way that tempered air exits from the group B air nozzles 52, which are assigned to this right-hand threshold region of the vehicle body 12. In this way, the too-cool threshold region of the vehicle body 12 is tempered during its passage through the Wegemperierzone 38 and heated to the target temperature of 120 ° C.
  • all regions of the vehicle body 12 covered by the air nozzles 52 can be temperature-controlled at night if the detection device 40 detects temperatures that are too low in certain areas of the vehicle body 12.
  • the detection device 40 detects temperatures that are too low in certain areas of the vehicle body 12.
  • the distribution device 56 is controlled in accordance with the control units 58 so that the required air nozzles 52 are supplied with tempered air.
  • FIG. 4 is shown on the left side of the corresponding part of a modified Lokaltemperier Anlagen 50, which also includes movable tempering units 60, here in the form of a multi-axis robotic arm 62 which carries an air nozzle 64, which is connected via a flexible line 66 to one of the leads 54 is.
  • movable tempering units 60 here in the form of a multi-axis robotic arm 62 which carries an air nozzle 64, which is connected via a flexible line 66 to one of the leads 54 is.
  • These movable temperature control units 60 can reach the interior of the vehicle body 12 via their window openings, so that even areas in the interior of the vehicle body 12 can be tempered later.
  • temperature sensors 68 are also included in the detection device 40, which can detect the temperature on the inner wall on the opposite side through the window openings of the vehicle body 12 and have a corresponding scanning range.
  • these temperature sensors 64 are in FIG. 2 to recognize two, the scanning window is indicated on the respective opposite inner surface of the vehicle body 12 by dashed lines.
  • further such temperature sensors 64 may be present in order to also check the threshold areas on the inner surface of the vehicle body 12 or other interior areas of the vehicle body 12 for their temperature.
  • the output signals of the temperature sensors 68 supplement the temperature data set, so that the control units 58 can create a temperature profile of the outer surface and the inner surface of the vehicle body 12.
  • a modified dryer 10 in which a modified second tempering device in the form of a Lokaltemperier Anlagen 70 in the Wegemperierzone 38 is present, with which localized areas of the vehicle body 12 can be targeted temperature.
  • a modified second tempering device in the form of a Lokaltemperier Anlagen 70 in the Wegemperierzone 38 is present, with which localized areas of the vehicle body 12 can be targeted temperature.
  • the air nozzles 52 are instead of the air nozzles 52 as individually controllable tempering heat radiators 72 available, which emit heat radiation to the vehicle body 12, so that local areas of the vehicle body 12 can be specifically controlled temperature.
  • the heat radiators 72 are connected to supply lines 74 instead of supply lines for tempered air via which the heat radiators 72 from sources / reservoirs not specifically shown can be provided with the resources required for their operation.
  • a heat radiator 72 have in practice particularly infrared radiators, which must be energized, and dark radiators proven that generate heat by combustion of an oxygen-gas mixture, which must be supplied to this accordingly.
  • the heat radiators 72 can be operated with different power, so that the amount of heat emitted by a heat radiator 72 per unit time can be adjusted.
  • the example of the heat radiator 72 illustrates a finer division of the temperature control units in groups; there are groups A, B, C, D, E, F, which are assigned from bottom to top of the floor panel, the sill area, a central area, the window area, the area of the roof rail and the roof of the vehicle body 12.
  • the air nozzles 52 of the tempering device 50 can also be arranged in such a finer subdivision.
  • both the air nozzles 52 of the Lokaltemperier interests 50 and the heat radiator 72 of the Lokaltemperier interests 70 may be rigid.
  • One or more of the air nozzles 52 or one or more of the heat radiators 72 may also be movable, e.g. be moved, so that the main beam direction can be adjusted.
  • the vehicle bodies 12 are heated in the tempering zone 18 to a desired temperature, which may not be reached by parts or regions of the vehicle body 12. To cool these Areas are detected in the test zone 36 and brought later in the Wegemperierzone 38 to the desired temperature.
  • the dryer 10 can now be deviated from this. It is sufficient if the vehicle body 12 as a whole in the tempering zone 18 is heated to the first, lower temperature T 1 . In the test zone 36 it is then determined whether this temperature T 1 is present everywhere on the vehicle body 12.
  • those parts and areas of the vehicle body 12 can then be specifically heated to the second, higher temperature T 2 , without this taking place for the remaining areas at the temperature T 1 . If the test procedure in the test zone 36 has shown that there are other areas with the desired temperature T 1 that they do not have, such areas can also be brought to the desired temperature T 1 in the night-tempering zone 38.
  • a Lokaltemperier noisy 50 or 70 may also be provided alternatively or in addition to the Goodemperierzone 38 in a Vortemperierzone, which is located in the transport direction in front of the tempering zone 18, in which the vehicle bodies 12 are tempered as a whole.
  • this preheating zone certain parts or regions of the vehicle body 12 may then be preheated, possibly under specification of a known target temperature profile, so that the actual heating and / or drying process can take place more quickly than without the preheating zone.
  • air nozzles 52 and heat radiator 72 may be combined to specifically control certain parts or areas of the vehicle body 12.

Description

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

  1. a) einem Gehäuse;
  2. b) einem in dem Gehäuse untergebrachten Temperiertunnel, durch welchen ein Gegenstand mittels eines Transportsystems in einer Transportrichtung transportierbar ist;
  3. c) wenigstens einer Temperiereinrichtung zum Temperieren des Gegenstandes;
    wobei
  4. d) eine Lokaltemperiereinrichtung vorhanden ist, mittels welcher lokal begrenzte Bereiche des Gegenstandes gezielt temperierbar sind und welche hierzu mehrere unabhängig voneinander aktivierbar und ansteuerbare Temperiereinheiten umfasst,
  5. e) die Lokaltemperiereinrichtung in einer Nachtemperierzone angeordnet ist, die in Transportrichtung hinter einer Temperierzone angesiedelt ist, in welcher der Gegenstand als Ganzes temperiert wird.
The invention relates to a device for tempering objects, in particular for drying coated vehicle bodies, with
  1. a) a housing;
  2. b) a tempering tunnel accommodated in the housing, through which an object can be transported by means of a transport system in a transport direction;
  3. c) at least one tempering device for tempering the object;
    in which
  4. d) a local tempering device is present, by means of which locally limited areas of the object are specifically temperature-controlled and which for this purpose comprises a plurality of independently activatable and controllable tempering units,
  5. e) the Lokaltemperiereinrichtung is arranged in a Nachtemperierzone, which is located in the transport direction behind a tempering zone, in which the object is tempered as a whole.

Außerdem betrifft die Erfindung ein Verfahren zum Temperieren von Gegenständen, insbesondere zum Trocknen von beschichteten Fahrzeugkarosserien, bei welchem Gegenstände durch einen Temperiertunnel transportiert werden und mittels wenigstens einer Temperiereinrichtung temperiert werden, wobei lokal begrenzte Bereiche des Gegenstandes mittels einer Lokaltemperiereinrichtung in einer Nachtemperierzone gezielt temperiert werden, die in Transportrichtung hinter einer Temperierzone angesiedelt ist, in welcher der Gegenstand als Ganzes temperiert wird.In addition, the invention relates to a method for controlling the temperature of objects, in particular for drying coated vehicle bodies, in which objects are transported through a tempering tunnel and tempered by means of at least one tempering device, wherein locally limited areas of the object are tempered targeted by means of a Lokaltemperiereinrichtung in a Nachtemperierzone, which is located in the transport direction behind a tempering zone, in which the object is tempered as a whole.

Eine solche Vorrichtung und ein solches Verfahren sind in der US 5,060,594 A beschrieben.Such a device and such a method are in the US 5,060,594 A described.

Nachfolgend wird die Erfindung am Beispiel von Fahrzeugkarosserien als Gegenstände beschrieben, wobei unter "Fahrzeugkarosserie" hier nicht nur die komplette Fahrzeugkarosserie verstanden werden, sondern auch solche großen Karosserieteile, bei denen sich die unten geschilderte Problematik in derselben Weise stellt.The invention will be described below using the example of vehicle bodies as objects, wherein "vehicle body" here not only the complete vehicle body are understood, but also such large body parts, in which the problems outlined below in the same way.

Wenn vorliegend von "Temperieren" einer Fahrzeugkarosserie gesprochen ist, so ist hiermit die Herbeiführung einer bestimmten Temperatur der Fahrzeugkarosserie gemeint, die sie zunächst noch nicht besitzt. Es kann sich um eine Temperaturerhöhung oder eine Temperaturverringerung handeln. Unter einer "temperierten Luft" wird eine solche verstanden, welche die zur Temperierung der Fahrzeugkarosserie erforderliche Temperatur besitzt.When this is spoken of "tempering" a vehicle body, so hereby the bringing about a certain temperature of the vehicle body is meant, which initially does not have them. It may be a temperature increase or a temperature decrease. A "tempered air" is understood to mean that which has the temperature required for temperature control of the vehicle body.

Ein in der Automobilindustrie häufiger Fall des Temperierens, nämlich des Erwärmens, von Fahrzeugkarosserien ist der Vorgang des Trocknens der Beschichtung einer Fahrzeugkarosserie, handele es sich dabei nun um einen Lack oder einen Klebstoff oder dergleichen. Die nachfolgende Beschreibung der Erfindung im Detail erfolgt am Beispiel eines solchen Trockners.A common case of tempering in the automotive industry, namely the heating of vehicle bodies, is the process of drying the coating of a vehicle body, be it a paint or an adhesive or the like. The following description of the invention in detail 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.In the present case, the term "drying" refers to all processes in which the coating of the vehicle body, in particular, a paint, can be brought to cure, be it by expelling solvents or by crosslinking of the coating substance.

Bekannte als Trockner ausgestaltete Vorrichtungen der eingangs genannten Art besitzen üblicherweise eine Temperierzone im Temperiertunnel, in welcher die Fahrzeugkarosserie als Ganzes auf eine gewünschte Temperatur erwärmt wird. Hierzu kann z.B. zu beiden Seiten der Temperierzone jeweils ein Druckraum vorhanden sein; über diese Druckräume kann temperierte Luft durch Düsen auf die Außenfläche und gegebenenfalls auch auf die Innenfläche der Fahrzeugkarosserie abgegeben werden.Known as dryer designed devices of the type mentioned above usually have a tempering in Temperiertunnel in which the vehicle body is heated as a whole to a desired temperature. For this, e.g. on both sides of the tempering zone in each case a pressure chamber may be present; tempered air can be discharged through nozzles to the outer surface and optionally also to the inner surface of the vehicle body via these pressure chambers.

Fahrzeugkarosserien werden in jüngster Zeit in ihrem Aufbau zunehmend kompliziert. Insbesondere weisen sie in unterschiedlichen Bereichen unterschiedliche Massen auf. So ist beispielsweise der unterste Bereich, der Schwellerbereich bzw. die Bodengruppe, stark massebehaftet und besitzt demzufolge eine erhebliche Wärmekapazität. Die von nur einer Seite erfolgte Erwärmung der verschiedenen Bereiche der Fahrzeugkarosserie benötigt eine nicht unerhebliche Zeit, bis die Wärme diese Bereiche vollständig durchdrungen hat. Diese Zeit differiert darüber hinaus lokal, je nach dem, wie in dem jeweiligen Bereich gerade die Masseverteilung und die Verteilung der Wärmekapazitäten ist.Vehicle bodies have recently become increasingly complicated in structure. In particular, they have different masses in different areas. For example, the lowermost area, the sill area or the floor area, is heavily massed and therefore has a considerable heat capacity. The heating of the different areas of the vehicle body, which takes place from only one side, takes a considerable time until the heat has completely penetrated these areas. In addition, this time differs locally, depending on how precisely in each area the mass distribution and the distribution of heat capacities is.

Bei den bekannten Vorrichtung und Verfahren der eingangs genannten Art wird mit der Temperiereinrichtung insgesamt die Fahrzeugkarosserie als Ganzes über eine bestimmte Zeitdauer temperiert. Auf Grund der unterschiedlichen Massen der Karosserieteile können jedoch Bereiche oder Teile der Fahrzeugkarosserie unterschiedliche Temperaturen haben, die bei manchen Teilen auch unter einer geforderten Mindesttemperatur für einen möglichst optimalen Trockenvorgang liegen können, obwohl andere Bereiche und Teile der Fahrzeugkarosserie die geforderte Soll-Temperatur bereits haben oder sogar überschreiten.In the known device and method of the type mentioned above, the vehicle body as a whole is tempered as a whole over a certain period of time with the tempering device. Due to the different masses of the body parts, however, areas or parts of the vehicle body may have different temperatures, which in some parts may also be below a required minimum temperature for the best possible drying process, although other areas and parts of the vehicle body already have the required target temperature or even exceed.

Die Verweildauer der zu trocknenden Fahrzeugkarosserie im Trockner wird jedoch in der Regel an die längste Zeit angepasst, die der ungünstigste, am stärksten mit Masse behaftete Bereich der Fahrzeugkarosserie zum Trocknen braucht. Hierdurch werden nicht nur die Taktzeiten des Trockners verlängert; darüber hinaus kann in denjenigen Bereichen und an denjenigen Teilen der Fahrzeugkarosserie, die schneller trocknen, eine Überhitzung stattfinden. Dies kann sich besonders dort nachteilig auswirken, wo unterschiedliche, auch temperaturempfindliche Materialien in der Fahrzeugkarosserie verbaut sind und/oder Verklebungen vorgenommen worden sind.However, the residence time of the vehicle body to be dried in the dryer is usually adjusted to the longest time that the worst case, most massed area of the vehicle body needs to dry. As a result, not only the cycle times of the dryer are extended; moreover, in those areas and those parts of the vehicle body that dry faster, overheating take place. This can have a disadvantageous effect especially where different, even temperature-sensitive materials are installed in the vehicle body and / or adhesions have been made.

Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung und ein Verfahren der eingangs genannten Art zu schaffen, welche diesen Gedanken Rechnung tragen.Object of the present invention is to provide a device and a method of the type mentioned, which take into account this idea.

Diese Aufgabe wird bei einer Vorrichtung der eingangs genannten Art dadurch gelöst, dass
f) Temperiereinheiten der Lokaltemperiereinrichtung als Luftdüsen ausgebildet sind, durch welche temperierte Luft auf den Gegenstand abgebbar ist.This object is achieved in a device of the type mentioned in that
f) tempering units of Lokaltemperiereinrichtung are designed as air nozzles through which tempered air can be delivered to the object.

Die Vorrichtung ist derart eingerichtet, dass bestimmte Bereiche des Gegenstandes, insbesondere der Fahrzeugkarosserie, gezielt temperiert werden können, ohne dass dies den gleichen Einfluss auf andere und insbesondere benachbarte Bereiche dieser gezielt temperierten Bereiche des Gegenstandes hat und ohne dass gleichzeitig andere und insbesondere benachbarte Bereiche dieser gezielt temperierten Bereiche des Gegenstandes temperiert werden müssen. Dadurch, dass die Lokaltemperiereinrichtung in einer Nachtemperierzone angeordnet ist, die in Transportrichtung hinter einer Temperierzone angesiedelt ist, in welcher der Gegenstand als Ganzes temperiert wird, wird die Fahrzeugkarosserie nach dem eigentlichen Temperieren zum Trocknen gleichsam nachbehandelt, indem insbesondere massebehaftete Teile gezielt temperiert werden. Es kann auf günstige Weise auf etablierte Techniken zurückgegriffen werden, wenn Temperiereinheiten der Lokaltemperiereinrichtung als Luftdüsen ausgebildet sind, durch welche temperierte Luft auf den Gegenstand abgebbar ist.The device is set up such that certain areas of the object, in particular the vehicle body, can be tempered in a targeted manner, without this having the same influence on other and in particular adjacent areas of these targeted areas of the object and without at the same time other and in particular adjacent areas of these specifically tempered areas of the article must be tempered. Because of that Local tempering is arranged in a Nachtemperierzone, which is located in the transport direction behind a tempering in which the article is tempered as a whole, the vehicle body is treated after the actual tempering for drying as it were by particular tempered parts are specifically tempered. It can be used in a favorable manner on established techniques when tempering the Lokaltemperiereinrichtung are designed as air nozzles through which tempered air can be delivered to the object.

Es ist besonders günstig, wenn

  1. a) in einer Prüfzone eine Detektionseinrichtung, angeordnet ist, mit welcher eine Temperaturverteilung an der Oberfläche des Gegenstandes erfassbar ist, wobei die Prüfzone in Transportrichtung vor der Lokaltemperiereinrichtung angesiedelt ist;
  2. b) Ausgangssignale der Detektionseinrichtung mittels einer Steuereinheit zu Steuersignalen verarbeitet werden, durch welche die Temperiereinheiten der Lokaltemperiereinrichtung angesteuert werden.
It is especially cheap if
  1. a) in a test zone, a detection device is arranged, with which a temperature distribution on the surface of the article can be detected, wherein the test zone is located in the transport direction in front of the Lokaltemperiereinrichtung;
  2. b) output signals of the detection device are processed by means of a control unit to control signals, by which the temperature control units of Lokaltemperiereinrichtung are controlled.

Auf diese Weise kann von der Fahrzeugkarosserie eine Art Temperaturprofil erstellt werden, welches Auskunft darüber gibt, welche Bereiche der Fahrzeugkarosserie noch temperiert werden müssen. Wenn die Detektionseinrichtung vorhanden ist, kann mit dieser vorher ermittelt werden, welche Bereiche oder Teile der Fahrzeugkarosserie eine Nachtemperierung benötigen. Bei einer gleichmäßigen Abweichung von der Soll-Temperatur nach oben oder unten an allen Detektionsstellen kann dadurch auch das energetische Gesamtniveau erkannt und gegebenenfalls nachgeregelt werden.In this way, a kind of temperature profile can be created by the vehicle body, which provides information about which areas of the vehicle body still need to be tempered. If the detection device is present, it can be used to determine beforehand which areas or parts of the vehicle body require a night temperature control. With a uniform deviation from the target temperature up or down at all detection points, the overall energy level can be detected and readjusted if necessary.

Hierfür ist es vorteilhaft, wenn die Detektionseinrichtung mehrere Temperatursensoren umfasst, durch welche zumindest die Außenkontur des Gegenstandes weitgehend erfassbar ist. Als Temperatursensoren kommen vorzugsweise Infrarotsensoren, z.B. in Form von IR-Kameras, Lasertemperaturfühler oder dergleichen in Betracht.For this purpose, it is advantageous if the detection device comprises a plurality of temperature sensors, by which at least the outer contour of the object is largely detectable. As temperature sensors, preferably infrared sensors, e.g. in the form of IR cameras, laser temperature sensor or the like into consideration.

Wenn die Temperatursensoren portalartig angeordnet sind, kann der Gegenstand einfach beim Transport durch den Temperiertunnel an den Temperatursensoren vorbei bzw. durch das von diesen gebildete Portal geführt werden.If the temperature sensors are arranged in the manner of a portal, the article can simply be guided past the temperature sensors or through the portal formed by them during transport through the tempering tunnel.

Bei einer bevorzugten Ausführungsform ist eine weitere Lokaltemperiereinrichtung in einer Vortemperierzone angeordnet, die in Transportrichtung vor einer Temperierzone angesiedelt ist, in welcher der Gegenstand als Ganzes temperiert wird. In diesem Fall können insbesondere massebehaftete Bereiche und Teile der Fahrzeugkarosserie vortemperiert werden, so dass die eigentliche Temperierung der Fahrzeugkarosserie als Ganzes schneller und energiesparender erfolgen kann.In a preferred embodiment, a further local tempering device is arranged in a pre-tempering zone, which is located in the transport direction in front of a tempering zone in which the article as a whole is tempered. In this case, in particular mass-afflicted areas and parts of the vehicle body can be pre-tempered, so that the actual temperature of the vehicle body can be done as a whole faster and more energy efficient.

Um ein gezieltes Temperieren bestimmter Karosseriebereiche oder -teile effektiv durchführen zu können, ist es günstig, wenn wenigstens eine der Temperiereinheiten der Lokaltemperiereinrichtung beweglich ist, so dass deren Hauptstrahlrichtung einstellbar ist. Die Hauptstrahlrichtung soll dabei diejenige Richtung definieren, in welcher eine Temperiereinheit ihre größte Wirkung entfaltet.In order to be able to effectively carry out targeted temperature control of specific body regions or parts, it is favorable if at least one of the temperature control units of the local temperature control device is movable, so that its main radiation direction can be adjusted. The main beam direction is intended to define the direction in which a temperature control unit develops its greatest effect.

Ergänzend können Temperiereinheiten der Lokaltemperiereinrichtung als Wärmestrahler ausgebildet sein. Hierfür werden vorzugsweise Infrarotstrahler und Dunkelstrahler verwendet.In addition, tempering units of the local tempering device can be designed as heat radiators. For this purpose, preferably infrared radiators and dark radiators are used.

Im Hinblick auf das Verfahren der eingangs genannten Art wird die oben angegebene Aufgabe dadurch gelöst, dass temperierte Luft durch als Luftdüsen ausgebildete Temperiereinheiten der Lokaltemperiereinrichtung auf den Gegenstand abgegeben wird.With regard to the method of the type mentioned the above-mentioned object is achieved in that tempered air is discharged through formed as air nozzles tempering the Lokaltemperiereinrichtung on the object.

Mit einer gezielten Temperierung ist auch hier gemeint, dass - wieder am Beispiel der Fahrzeugkarosserie - bestimmte Bereiche der Fahrzeugkarosserie gezielt temperiert werden können, ohne dass dies den gleichen Einfluss auf andere und insbesondere benachbarte Bereiche dieser gezielt temperierten Bereiche der Fahrzeugkarosserie hat und ohne dass gleichzeitig andere und insbesondere benachbarte Bereiche dieser gezielt temperierten Bereiche der Fahrzeugkarosserie temperiert werden müssen.Targeted temperature control also here means that - again using the example of the vehicle body - certain areas of the vehicle body can be specifically tempered without this having the same influence on other and especially adjacent areas of these targeted temperature areas of the vehicle body and at the same time without others and in particular adjacent areas of these targeted tempered areas of the vehicle body must be tempered.

Die Vorteile entsprechen den oben zur Vorrichtung erläuterten Vorteilen.The advantages correspond to the advantages explained above for the device.

Es ist dementsprechend besonders günstig, wenn die lokal begrenzten Bereiche des Gegenstandes mittels einer Detektionseinrichtung bestimmt werden, durch welche eine Temperaturverteilung an der Oberfläche des Gegenstandes erfasst wird.Accordingly, it is particularly advantageous if the locally limited regions of the object are determined by means of a detection device, by means of which a temperature distribution at the surface of the object is detected.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert. In diesen zeigen:

Figur 1
einen horizontalen Schnitt eines Trockners zum Trocknen von beschichteten Fahrzeugkarosserien gemäß einem ersten Ausführungsbeispiel mit einer Temperierzone, einer Prüfzone und einer Nachtemperierzone;
Figur 2
einen vertikalen Schnitt des Trockners nach Figur 1 gemäß der dortigen Linie II-II mit Blick auf die Prüfzone;
Figur 3
einen vertikalen Schnitt des Trockners nach Figur 1 gemäß der dortigen Linie III-III mit Blick auf die Nachtemperierzone;
Figur 4
einen der Figur 3 entsprechenden vertikalen Schnitt eines Trockners gemäß einem zweiten Ausführungsbeispiel mit einer abgewandelten Nachtemperierzone;
Figur 5
einen der Figur 1 entsprechenden horizontalen Schnitt eines Trockners gemäß einem dritten Ausführungsbeispiel mit einer nochmals modifizierten Nachtemperierzone;
Figur 6
einen den Figuren 3 und 4 entsprechenden vertikalen Schnitt des Trockners nach Figur 5 mit Blick auf die Nachtemperierzone.
Embodiments of the invention are explained below with reference to the drawings. In these show:
FIG. 1
a horizontal section of a dryer for drying coated vehicle bodies according to a first embodiment with a tempering zone, a test zone and a Nachtemperierzone;
FIG. 2
a vertical section of the dryer after FIG. 1 according to the local line II-II with a view of the test zone;
FIG. 3
a vertical section of the dryer after FIG. 1 according to the local line III-III with a view to the Nachtemperierzone;
FIG. 4
one of the FIG. 3 corresponding vertical section of a dryer according to a second embodiment with a modified Nachtemperierzone;
FIG. 5
one of the FIG. 1 corresponding horizontal section of a dryer according to a third embodiment with a further modified Nachtemperierzone;
FIG. 6
a the Figures 3 and 4 according to the vertical section of the dryer FIG. 5 with a view of the night tempering zone.

Zunächst wird auf Figur 1 Bezug genommen. Dort ist ein insgesamt mit 10 bezeichneter Trockner für beschichtete Fahrzeugkarosserien 12 gezeigt, welcher in bekannter Weise ein Gehäuse 14 umfasst, in welchem ein Temperiertunnel 16 untergebracht ist.First, it will open FIG. 1 Referenced. There is shown a generally designated 10 dryer for coated vehicle bodies 12, which in a known manner comprises a housing 14 in which a tempering 16 is housed.

Der Temperiertunnel 16 umfasst eine Temperierzone 18, deren Innenraum durch zwei vertikale Längswände 20, 22 in zwei seitliche Druckräume 24, 26 und einen dazwischen liegenden mittleren Trockentunnel 28 unterteilt ist. Die beschichteten Fahrzeugkarosserien 12 werden mittels eines schematisch dargestellten Transportsystems 30 durch den Temperiertunnel 16 gefördert. An den Stirnseiten des Temperiertunnels 16 sind im Allgemeinen nicht dargestellte Schleusen vorgesehen, welche den Durchgang der Fahrzeugkarosserie 12 in den Temperiertunnel 16 hinein und aus diesem heraus ohne großen Wärmeverlust und mit geringem Atmosphärenaustausch ermöglichen.The tempering tunnel 16 comprises a tempering zone 18, whose interior is divided by two vertical longitudinal walls 20, 22 into two lateral pressure chambers 24, 26 and an intermediate central drying tunnel 28. The coated vehicle bodies 12 are conveyed through the tempering tunnel 16 by means of a transport system 30 shown schematically. On the front sides of the tempering tunnel 16 locks are generally not shown provided which allow the passage of the vehicle body 12 into the temperature control tunnel 16 in and out of this without much heat loss and with little exchange of atmosphere.

In den beiden Längswänden 20, 22 befindet sich jeweils eine Vielzahl von Kurzstrahldüsen 32 und Weitstrahldüsen 34, welche eine Verbindung zwischen den Druckräumen 24, 26 und dem Trockentunnel 28 herstellen. Die Druckräume 24, 26 werden in bekannter Weise mit temperierter Luft gespeist, die dann sowohl durch die Kurzstrahldüsen 32 als auch durch die Weitstrahldüsen 34 strömt und von diesen in den Trockentunnel 28 abgegeben und in Richtung auf die Fahrzeugkarosserie 12 geleitet wird. Durch die Druckräume 24, 26 in Verbindung mit den Kurzstrahldüsen 32 und den Weitstrahldüsen 34 ist eine Temperiereinrichtung in Form einer Volltemperiereinrichtung 35 gebildet, mittels welcher die Fahrzeugkarosserien 12 als Ganzes temperiert werden.In the two longitudinal walls 20, 22 are each a plurality of short jet nozzles 32 and wide jet nozzles 34, which establish a connection between the pressure chambers 24, 26 and the drying tunnel 28. The pressure chambers 24, 26 are fed in a known manner with tempered air, which then flows through both the short jet nozzles 32 and through the wide jet nozzles 34 and discharged from them into the drying tunnel 28 and directed in the direction of the vehicle body 12. By the pressure chambers 24, 26 in conjunction with the short jet nozzles 32 and the wide jet nozzles 34, a tempering device in the form of a Volltemperiereinrichtung 35 is formed, by means of which the vehicle bodies 12 as Whole tempered.

Bei den Kurzstrahldüsen 32 handelt es sich um Düsen mit einer so kurzen Abgabeweite, dass sie die ihnen zugewandte Seite der Fahrzeugkarosserie 12 beaufschlagen können. Derartige Kurzstrahldüsen 32 sind an und für sich bekannt. Ihre Strahlrichtung ist einstellbar, wozu sich die Kurzstrahldüsen 32 beispielsweise in Öffnungen in den Längswänden 20, 22 mit kugelkalottenförmigen Begrenzungswänden befinden können, wodurch die Kurzstrahldüsen 32 in ihrer Winkelstellung verstellbar geführt sind.The short jet nozzles 32 are nozzles with such a short discharge width that they can act on the side of the vehicle body 12 facing them. Such short jet nozzles 32 are known per se. Their jet direction is adjustable, for which purpose the short jet nozzles 32 can be located, for example, in openings in the longitudinal walls 20, 22 with spherical capped boundary walls, whereby the short jet nozzles 32 are adjustably guided in their angular position.

Die Weitstrahldüsen 34 haben dagegen eine größere Abgabeweite als die Kurzstrahldüsen 32, wodurch es möglich ist, die aus den Weitstrahldüsen 34 austretende Heißluft durch eine Öffnung in der zugewandten Seitenfläche der Fahrzeugkarosserien 12, beispielsweise durch eine Fensteröffnung oder durch eine geöffnete Tür, auf die Innenfläche der gegenüberliegenden Karosserieseite zu richten, so dass also der Heißluftstrom den gesamten Innenraum der Fahrzeugkarosserie 12 durchquert. Die Richtung dieser Heißluft ist dabei so, dass sie vornehmlich auf den unteren, inneren Bereich der Fahrzeugkarosserie 12 gerichtet ist, wo verhältnismäßig viel Masse und daher eine große Wärmekapazität vorhanden ist.On the other hand, the wide-jet nozzles 34 have a larger discharge width than the short-jet nozzles 32, whereby it is possible to discharge the hot air discharged from the wide-jet nozzles 34 through an opening in the facing side surface of the vehicle bodies 12, for example, through a window opening or through an opened door directed to the opposite body side, so that thus the hot air flow traverses the entire interior of the vehicle body 12. The direction of this hot air is such that it is directed primarily to the lower, inner region of the vehicle body 12, where relatively much mass and therefore a large heat capacity is present.

Obwohl durch die Kombination von Kurzstrahldüsen 32 und Weitstrahldüsen 34 bereits eine sehr gleichmäßige Erwärmung aller Teile der Fahrzeugkarosserie 12 erzielbar ist, können lokale Temperaturunterschiede an der Fahrzeugkarosserie 12 bestehen bleiben, wenn diese die Temperierzone 18 durchlaufen hat. Insbesondere kann es vorkommen, dass lokale Bereiche der Fahrzeugkarosserie 12 im Trockentunnel 28 nicht diejenige Temperatur erreicht haben, die für einen möglichst optimalen Trockenvorgang erforderlich sind.Although a very uniform heating of all parts of the vehicle body 12 can already be achieved by the combination of short jet nozzles 32 and wide jet nozzles 34, local temperature differences on the vehicle body 12 can remain if the latter has passed through the tempering zone 18. In particular, it may happen that local areas of the vehicle body 12 in the drying tunnel 28 have not reached the temperature that is necessary for the best possible drying process.

Um solche lokalen Temperaturunterschiede an der Fahrzeugkarosserie 12 zu erfassen und auszugleichen, umfasst der Temperiertunnel 16 eine Prüfzone 36 und eine Nachtemperierzone 38 zum Nachtemperieren der Fahrzeugkarosserie 12, welche in Transportrichtung hinter der Temperierzone 18 angesiedelt sind, in der die Fahrzeugkarosserie als Ganzes temperiert wird. Die Prüfzone 36 ist dabei in Transportrichtung vor der Nachtemperierzone 38 angesiedelt.To detect and compensate for such local temperature differences on the vehicle body 12, the tempering tunnel 16 comprises a test zone 36 and a Nachtemperierzone 38 for Nachtemperieren the vehicle body 12, which are located in the transport direction behind the tempering zone 18, in which the vehicle body is tempered as a whole. The test zone 36 is located in the transport direction before the Nachtemperierzone 38.

In der Prüfzone 36 ist eine Detektionseinrichtung 40 angeordnet, welche von der zu überprüfenden Fahrzeugkarosserie 12 nach der Temperierzone 18 durchlaufen wird und mit welcher die Temperaturverteilung an der Oberfläche der Fahrzeugkarosserie 12 erfasst werden kann. Die Detektionseinrichtung 40 umfasst hierzu mehrere Temperatursensoren 42, wie sie an und für sich bekannt sind. Beispielsweise kommen hierfür Infrarotsensoren, z.B. in Form von IR-Kameras, Lasertemperaturfühler oder dergleichen in Frage. Beim hier gezeigten Ausführungsbeispiel sind die Temperatursensoren 42 portalartig angeordnet, wie es in Figur 2 zu erkennen ist, wo nicht alle Temperatursensoren 42 ein Bezugszeichen tragen.In the test zone 36, a detection device 40 is arranged, which is traversed by the vehicle body to be checked 12 after the tempering zone 18 and with which the temperature distribution on the surface of the vehicle body 12 can be detected. For this purpose, the detection device 40 comprises a plurality of temperature sensors 42, as they are known per se. For example, this infrared sensors, for example in the form of IR cameras, laser temperature sensor or the like in question. In the embodiment shown here, the temperature sensors 42 are arranged like a portal, as it is in FIG. 2 it can be seen where not all temperature sensors 42 carry a reference numeral.

Auf diese Weise kann die Außenkontur der Fahrzeugkarosserie 12 vom Erfassungsbereich der Temperatursensoren 42 weitgehend abgedeckt werden, wenn die Fahrzeugkarosserie 12 an den Temperatursensoren 42 vorbeifährt. Eine Haltestruktur für die Temperatursensoren 42 ist der Einfachheit halber nicht gezeigt.In this way, the outer contour of the vehicle body 12 can be largely covered by the detection range of the temperature sensors 42 when the vehicle body 12 passes by the temperature sensors 42. A support structure for the temperature sensors 42 is not shown for the sake of simplicity.

Die Erfassung der Temperaturverteilung an der Oberfläche der Fahrzeugkarosserie 12 bedeutet nicht, dass stets ein vollständiges Oberflächenbild der Fahrzeugkarosserie 12 erstellt wird oder werden muss. Es kann beispielsweise auch nur gewünscht sein, dass in der Prüfzone 36 überprüft wird, ob bestimmte Bereiche der Fahrzeugkarosserie 12, z.B. der Schwellerbereich, eine geforderter Solltemperatur haben. Die Informationsdichte über die Temperaturverteilung an der Oberfläche der Fahrzeugkarosserie 12 hängt somit von der Zahl und/oder der Anordnung der Temperatursensoren 42 ab.The detection of the temperature distribution on the surface of the vehicle body 12 does not mean that always a complete surface image of the vehicle body 12 is created or must be. It may, for example, also only be desired to check in the test zone 36 whether certain Areas of the vehicle body 12, for example, the sill area, have a required set temperature. The information density about the temperature distribution on the surface of the vehicle body 12 thus depends on the number and / or the arrangement of the temperature sensors 42.

Die Nachtemperierzone 38 umfasst nun ihrerseits einen von Längswänden 44 und 46 begrenzten Nachtemperiertunnel 48, in welchem mittels einer weiteren Temperiereinrichtung in Form einer Lokaltemperiereinrichtung 50 lokal begrenzte Bereiche der Fahrzeugkarosserie 12 gezielt temperiert werden können.The Nachtemperierzone 38 now includes in turn a limited by longitudinal walls 44 and 46 Nachtemperiertunnel 48, in which by means of a further temperature control in the form of Lokaltemperiereinrichtung 50 locally limited areas of the vehicle body 12 can be specifically controlled temperature.

Hierzu tragen die Längswände 44 und 46 als Temperiereinheiten mehrere Luftdüsen 52, welche unabhängig voneinander aktivierbar und ansteuerbar sind, so dass jede Luftdüse 52 dazu in der Lage ist, temperierte Luft unabhängig von den übrigen Luftdüsen 52 der Lokaltemperiereinrichtung 50 auf die Fahrzeugkarosserie 12 abzugeben.For this purpose, the longitudinal walls 44 and 46 carry as temperature units a plurality of air nozzles 52 which are independently activated and controlled, so that each air nozzle 52 is capable of tempered air regardless of the remaining air nozzles 52 of the Lokaltemperiereinrichtung 50 to the vehicle body 12 deliver.

Beim vorliegenden Ausführungsbeispiel wird hierzu jede Luftdüse 52 über eine separate Zuleitung 54 mit temperierter Luft versorgt, wobei die Zuleitungen 54 zu den Luftdüsen 52 an einer Längswand 44, 46 über jeweils eine nur in Figur 3 zu erkennende Verteilereinrichtung 56 wahlweise mit temperierter Luft versorgt werden können oder nicht. In den Figuren 1 und 3 sind nicht alle Zuleitungen 54 mit einem Bezugszeichen versehen.In the present embodiment, each air nozzle 52 is supplied via a separate supply line 54 with tempered air, the supply lines 54 to the air nozzles 52 on a longitudinal wall 44, 46 via a respective only in FIG. 3 to be recognized distribution device 56 can be supplied with either tempered air or not. In the FIGS. 1 and 3 not all leads 54 are provided with a reference numeral.

Ansonsten herrschen im Nachtemperiertunnel 48 die gleichen Bedingungen wie im Trockentunnel 18. Hierzu kann beispielsweise eine nicht eigens gezeigte Umwälzanlage vorhanden sein, wie sie an und für sich bekannt ist und durch welche die Atmosphäre im Temperiertunnel 16 so umgewälzt wird, dass im gesamten Temperiertunnel 16 weitgehend die gleiche Temperatur herrscht.Otherwise prevail in the Nachtemperiertunnel 48, the same conditions as in the drying tunnel 18. For example, a not specifically shown circulation system may be present, as it is known per se and by which the atmosphere in the temperature control 16 is circulated so that in the entire tempering 16 largely the same temperature prevails.

Die Luftdüsen 52 der Lokaltemperiereinrichtung 50 in der Nachtemperierzone 38 sind nun so an den Längswänden 44 und 46 platziert, dass insbesondere massereiche Bereiche der Fahrzeugkarosserie 12 mit temperierter Luft beaufschlagt werden können. Beim vorliegenden Ausführungsbeispiel sind die Temperiereinheiten, d.h. hier die Luftdüsen 52, von unten nach oben in vier Gruppen A, B, C und D angeordnet. Die Gruppe A ist der Bodengruppe, die Gruppe B dem Schwellerbereich, die Gruppe C einem mittleren Bereich und die Gruppe D einem oberen Bereich der Fahrzeugkarosserie 12 nahe der Dachreling zugeordnet. Dabei flankieren Luftdüsen 52 der Gruppen B, C und D die Fahrzeugkarosserie 12 jeweils zu beiden Seiten.The air nozzles 52 of the Lokaltemperiereinrichtung 50 in the Nachtemperierzone 38 are now placed on the longitudinal walls 44 and 46, that in particular massive areas of the vehicle body 12 can be acted upon with tempered air. In the present embodiment, the tempering units, i. here the air nozzles 52, arranged from bottom to top in four groups A, B, C and D. The group A is assigned to the floor group, the group B to the sill area, the group C to a middle area and the group D to an upper area of the vehicle body 12 near the roof rail. In this case, air nozzles 52 of the groups B, C and D flank the vehicle body 12 on both sides.

Wenn die Fahrzeugkarosserie 12 aus der Temperierzone 18 kommend die Detektionseinrichtung 40 passiert, erzeugen deren Temperatursensoren 42 Ausgangssignale, welche von Steuereinheiten 58 empfangen, ausgewertet und zu Steuersignalen verarbeitet werden, durch die wiederum die Luftdüsen 52 der Lokaltemperiereinrichtung 50 in der Nachtemperierzone 38 angesteuert wird. Aus den Ausgangssignalen der Temperatursensoren 42 können die Steuereinheiten 58 einen Temperaturdatensatz und daraus ein Temperaturprofil erstellen, aus dem sich lokale Temperaturunterschiede an der Oberfläche der Fahrzeugkarosserie 12 ableiten lassen. Die so gewonnenen Informationen können dann mit einem abgespeicherten Karosserietypen-abhängigen Temperaturprofil verglichen werden, so dass die Lokaltemperiereinrichtung 50 in der Nachtemperierzone 38 entsprechend angesteuert werden kann. Die Datendichte, die mit der Detektionseinrichtung 40 erhalten werden kann, hängt von der Anzahl und der Art der verwendeten Temperatursensoren 42 ab. Auch bei der Vermessung von lediglich zwei Stellen der Fahrzeugkarosserie 12 kann ein entsprechend gering auflösendes Temperaturprofil erstellt werden.When the vehicle body 12 passes from the tempering zone 18, the detection device 40, their temperature sensors 42 produce output signals which are received by control units 58, evaluated and processed into control signals, which in turn the air nozzles 52 of the Lokaltemperiereinrichtung 50 is controlled in the Nachtemperierzone 38. From the output signals of the temperature sensors 42, the control units 58 can generate a temperature data set and from this a temperature profile from which local temperature differences on the surface of the vehicle body 12 can be derived. The information thus obtained can then be compared with a stored body type-dependent temperature profile, so that the Lokaltemperiereinrichtung 50 can be controlled accordingly in the Nachtemperierzone 38. The data density that can be obtained with the detection device 40 depends on the number and type of temperature sensors 42 used. Even when measuring only two points of the vehicle body 12, a correspondingly low-resolution temperature profile can be created.

Es nun angenommen, dass die Fahrzeugkarosserie 12 in der Temperierzone 18 eine Temperatur von 120°C erreichen soll. Wenn die Detektionseinrichtung 40 nun beispielsweise ermittelt, dass die Fahrzeugkarosserie 12 im in Transportrichtung rechten Schwellerbereich eine Temperatur hat, die unterhalb eines unteren Mindestwerts, z.B. unterhalb von 110°C, liegt, aktivieren die Steuereinheiten 58 die Verteilereinrichtung 56 derart, dass temperierte Luft aus den Luftdüsen 52 der Gruppe B austritt, die diesem rechten Schwellerbereich der Fahrzeugkarosserie 12 zugeordnet sind. Auf diese Weise wird der zu kühle Schwellerbereich der Fahrzeugkarosserie 12 bei deren Durchlauf durch die Nachtemperierzone 38 nachtemperiert und auf die Soll-Temperatur von 120°C erwärmt.It is now assumed that the vehicle body 12 in the tempering zone 18 should reach a temperature of 120 ° C. If the detection device 40 now determines, for example, that the vehicle body 12 has a temperature in the right-hand threshold area in the transport direction that is below a lower minimum value, e.g. Below 110 ° C, the control units 58 activate the distributor device 56 in such a way that tempered air exits from the group B air nozzles 52, which are assigned to this right-hand threshold region of the vehicle body 12. In this way, the too-cool threshold region of the vehicle body 12 is tempered during its passage through the Nachtemperierzone 38 and heated to the target temperature of 120 ° C.

In entsprechender Weise können alle von den Luftdüsen 52 abgedeckten Bereiche der Fahrzeugkarosserie 12 nachtemperiert werden, wenn die Detektionseinrichtung 40 zu niedrige Temperaturen in bestimmten Bereichen der Fahrzeugkarosserie 12 erfasst. Es können natürlich auch mehrere Bereiche gleichzeitig nachtemperiert werden, wenn das Temperaturprofil mehrere Bereiche der Fahrzeugkarosserie 12 ergibt, an denen die Temperatur zu gering ist. In diesem Fall wird die Verteilereinrichtung 56 entsprechend von den Steuereinheiten 58 so angesteuert, dass die benötigten Luftdüsen 52 mit temperierter Luft versorgt werden.In a corresponding manner, all regions of the vehicle body 12 covered by the air nozzles 52 can be temperature-controlled at night if the detection device 40 detects temperatures that are too low in certain areas of the vehicle body 12. Of course, it is also possible for a plurality of areas to be controlled at the same time at night if the temperature profile results in a plurality of areas of the vehicle body 12 where the temperature is too low. In this case, the distribution device 56 is controlled in accordance with the control units 58 so that the required air nozzles 52 are supplied with tempered air.

In Figur 4 ist auf der linken Seite der entsprechende Teil eine abgewandelte Lokaltemperiereinrichtung 50 gezeigt, welche außerdem noch bewegliche Temperiereinheiten 60 umfasst, die hier in Form eines mehrachsigen Roboterarms 62 vorliegen, der eine Luftdüse 64 trägt, die über eine flexible Leitung 66 mit einer der Zuleitungen 54 verbunden ist. Diese beweglichen Temperiereinheiten 60 können den Innenraum der Fahrzeugkarosserie 12 über deren Fensteröffnungen erreichen, so dass auch Bereiche im Innenraum der Fahrzeugkarosserie 12 nachträglich temperiert werden können.In FIG. 4 is shown on the left side of the corresponding part of a modified Lokaltemperiereinrichtung 50, which also includes movable tempering units 60, here in the form of a multi-axis robotic arm 62 which carries an air nozzle 64, which is connected via a flexible line 66 to one of the leads 54 is. These movable temperature control units 60 can reach the interior of the vehicle body 12 via their window openings, so that even areas in the interior of the vehicle body 12 can be tempered later.

Um etwaige zu kühle Bereiche im Innenraum der Fahrzeugkarosserie 12 zu detektieren, sind auch Temperatursensoren 68 von der Detektionseinrichtung 40 umfasst, die durch die Fensteröffnungen der Fahrzeugkarosserie 12 die Temperatur an der Innenwand auf der gegenüberliegenden Seite erfassen können und eine entsprechende Abtastreichweite haben. Von diesen Temperatursensoren 64 sind in Figur 2 zwei zu erkennen, deren Abtastfenster auf die jeweils gegenüberliegende Innenfläche der Fahrzeugkarosserie 12 durch gestrichelte Linien angedeutet ist. In entsprechender Weise können weitere solcher Temperatursensoren 64 vorhanden sein, um auch die Schwellerbereiche an der Innenfläche der Fahrzeugkarosserie 12 oder andere Innenbereiche der Fahrzeugkarosserie 12 auf ihre Temperatur zu prüfen. Die Ausgangssignale der Temperatursensoren 68 ergänzen den Temperaturdatensatz, so dass die Steuereinheiten 58 ein Temperaturprofil von der Außenfläche und der Innenfläche der Fahrzeugkarosserie 12 erstellen können.In order to detect any areas that are too cool in the interior of the vehicle body 12, temperature sensors 68 are also included in the detection device 40, which can detect the temperature on the inner wall on the opposite side through the window openings of the vehicle body 12 and have a corresponding scanning range. Of these temperature sensors 64 are in FIG. 2 to recognize two, the scanning window is indicated on the respective opposite inner surface of the vehicle body 12 by dashed lines. In a corresponding manner, further such temperature sensors 64 may be present in order to also check the threshold areas on the inner surface of the vehicle body 12 or other interior areas of the vehicle body 12 for their temperature. The output signals of the temperature sensors 68 supplement the temperature data set, so that the control units 58 can create a temperature profile of the outer surface and the inner surface of the vehicle body 12.

Im rechten Bereich der Figur 4 und in Figur 5 ist ein modifizierter Trockner 10 gezeigt, bei welchem eine abgewandelte zweite Temperiereinrichtung in Form einer Lokaltemperiereinrichtung 70 in der Nachtemperierzone 38 vorhanden ist, mit welcher lokal begrenzte Bereiche der Fahrzeugkarosserie 12 gezielt temperiert werden können. Dort sind anstelle der Luftdüsen 52 als einzeln ansteuerbare Temperiereinheiten Wärmestrahler 72 vorhanden, welche Wärmestrahlung auf die Fahrzeugkarosserie 12 abgeben, so dass lokale Bereiche der Fahrzeugkarosserie 12 gezielt temperiert werden können.In the right area of the FIG. 4 and in FIG. 5 a modified dryer 10 is shown, in which a modified second tempering device in the form of a Lokaltemperiereinrichtung 70 in the Nachtemperierzone 38 is present, with which localized areas of the vehicle body 12 can be targeted temperature. There are instead of the air nozzles 52 as individually controllable tempering heat radiators 72 available, which emit heat radiation to the vehicle body 12, so that local areas of the vehicle body 12 can be specifically controlled temperature.

Die Wärmestrahler 72 sind statt mit Zuleitungen für temperierte Luft mit Versorgungsleitungen 74 verbunden, über welche die Wärmestrahler 72 aus nicht eigens gezeigten Quellen/Reservoiren mit den Ressourcen versorgt werden können, die für ihren Betrieb erforderlich sind. Als Wärmestrahler 72 haben sich in der Praxis besonders Infrarotstrahler, die bestromt werden müssen, und Dunkelstrahler bewährt, die Wärme durch Verbrennung eines Sauerstoff-Gas-Gemisches erzeugen, welches diesen entsprechend zugeführt werden muss. Die Wärmestrahler 72 können mit unterschiedlicher Leistung betrieben werden, so dass die von einem Wärmestrahler 72 abgegebene Wärmemenge pro Zeiteinheit eingestellt werden kann.The heat radiators 72 are connected to supply lines 74 instead of supply lines for tempered air via which the heat radiators 72 from sources / reservoirs not specifically shown can be provided with the resources required for their operation. As a heat radiator 72 have in practice particularly infrared radiators, which must be energized, and dark radiators proven that generate heat by combustion of an oxygen-gas mixture, which must be supplied to this accordingly. The heat radiators 72 can be operated with different power, so that the amount of heat emitted by a heat radiator 72 per unit time can be adjusted.

Wie in Figur 6 zu erkennen, ist am Beispiel der Wärmestrahler 72 eine feinere Aufteilung der Temperiereinheiten in Gruppen veranschaulicht; es gibt Gruppen A, B, C, D, E, F, welche von unten nach oben der Bodengruppe, dem Schwellerbereich, einem mittleren Bereich, dem Fensterbereich, dem Bereich der Dachreling und dem Dach der Fahrzeugkarosserie 12 zugeordnet sind. Auch die Luftdüsen 52 der Temperiereinrichtung 50 können in einer derart feineren Unterteilung angeordnet sein.As in FIG. 6 can be seen, the example of the heat radiator 72 illustrates a finer division of the temperature control units in groups; there are groups A, B, C, D, E, F, which are assigned from bottom to top of the floor panel, the sill area, a central area, the window area, the area of the roof rail and the roof of the vehicle body 12. The air nozzles 52 of the tempering device 50 can also be arranged in such a finer subdivision.

Zur sonstigen Anordnung, Ansteuerung und Handhabung der Wärmestrahler 72 gilt im Übrigen das oben zu den Luftdüsen 52 der Lokaltemperiereinrichtung 50 Gesagte sinngemäß entsprechend. Sowohl die Luftdüsen 52 der Lokaltemperiereinrichtung 50 als auch die Wärmestrahler 72 der Lokaltemperiereinrichtung 70 können starr sein. Eine oder mehrere der Luftdüsen 52 oder einer oder mehrere der Wärmestrahler 72 können auch beweglich, z.B. motorisch verfahrbar, sein, so dass deren Hauptstrahlrichtung eingestellt werden kann.For the other arrangement, control and handling of the heat radiator 72, by the way, the above applies to the air nozzles 52 of the Lokaltemperiereinrichtung 50 mutatis mutandis accordingly. Both the air nozzles 52 of the Lokaltemperiereinrichtung 50 and the heat radiator 72 of the Lokaltemperiereinrichtung 70 may be rigid. One or more of the air nozzles 52 or one or more of the heat radiators 72 may also be movable, e.g. be moved, so that the main beam direction can be adjusted.

Bei dem oben erläuterten Trockner 10 werden die Fahrzeugkarosserien 12 in der Temperierzone 18 auf eine Soll-Temperatur erwärmt, die gegebenenfalls von Teilen oder Bereichen der Fahrzeugkarosserie 12 nicht erreicht wird. Diese zu kühlen Bereiche werden in der Prüfzone 36 erfasst und in der Nachtemperierzone 38 nachträglich auf die gewünschte Temperatur gebracht.In the above-explained dryer 10, the vehicle bodies 12 are heated in the tempering zone 18 to a desired temperature, which may not be reached by parts or regions of the vehicle body 12. To cool these Areas are detected in the test zone 36 and brought later in the Nachtemperierzone 38 to the desired temperature.

Es kann nun auch der Fall vorkommen, dass bestimmte Bereiche der Fahrzeugkarosserie 12 nur auf eine erste Temperatur T1, andere Bereiche jedoch auf eine demgegenüber höhere zweite Temperatur T2 erwärmt werden müssen, um bei den jeweiligen Teilen oder Bereichen eine ausreichende Trocknung zu bewirken. Üblicherweise wird die Fahrzeugkarosserie 12 in einem solchen Fall als ganzes auf die höhere Temperatur T2 erwärmt, so dass sichergestellt ist, dass alle Teile und Bereiche der Fahrzeugkarosserie 12 die jeweils notwendige Mindesttemperatur erreichen.It may now also happen that certain areas of the vehicle body 12 only at a first temperature T 1 , other areas, however, must be heated to a relatively higher second temperature T 2 in order to effect a sufficient drying at the respective parts or areas. Usually, the vehicle body 12 is heated in such a case as a whole to the higher temperature T 2 , so that it is ensured that all parts and areas of the vehicle body 12 reach the respectively required minimum temperature.

Mit dem Trockner 10 kann nun hiervon abgewichen werden. Es reicht aus, wenn die Fahrzeugkarosserie 12 als Ganzes in der Temperierzone 18 auf die erste, niedrigere Temperatur T1 erwärmt wird. In der Prüfzone 36 wird dann ermittelt, ob diese Temperatur T1 überall an der Fahrzeugkarosserie 12 vorliegt.With the dryer 10 can now be deviated from this. It is sufficient if the vehicle body 12 as a whole in the tempering zone 18 is heated to the first, lower temperature T 1 . In the test zone 36 it is then determined whether this temperature T 1 is present everywhere on the vehicle body 12.

In der Nachtemperierzone 38 können dann gezielt diejenigen Teile und Bereiche der Fahrzeugkarosserie 12 auf die zweite, höhere Temperatur T2 erwärmt werden, ohne dass dies für die übrigen Bereiche bei der Temperatur T1 erfolgt. Wenn der Prüfvorgang in der Prüfzone 36 ergeben hat, dass es noch andere Bereiche mit der Soll-Temperatur T1 gibt, die diese nicht haben, können solche Bereiche ebenfalls in der Nachtemperierzone 38 auf die gewünschte Temperatur T1 gebracht werden.In the night-tempering zone 38, those parts and areas of the vehicle body 12 can then be specifically heated to the second, higher temperature T 2 , without this taking place for the remaining areas at the temperature T 1 . If the test procedure in the test zone 36 has shown that there are other areas with the desired temperature T 1 that they do not have, such areas can also be brought to the desired temperature T 1 in the night-tempering zone 38.

Auf diese Weise kann die Energiebilanz verbessert werden, da nur gezielt bestimmte Bereiche der Fahrzeugkarosserie 12 auf die höhere Temperatur T2 erwärmt werden, nicht jedoch die ganze Fahrzeugkarosserie 12.In this way, the energy balance can be improved, since only certain areas of the vehicle body 12 are heated to the higher temperature T 2 , but not the entire vehicle body 12th

Bei einem abgewandelten und hier nicht eigens gezeigten Trockner kann eine Lokaltemperiereinrichtung 50 oder 70 auch alternativ oder zusätzlich zu der Nachtemperierzone 38 in einer Vortemperierzone vorgesehen sein, die in Transportrichtung vor der Temperierzone 18 angesiedelt ist, in welcher die Fahrzeugkarosserien 12 als Ganzes temperiert werden. In dieser Vorwärmzone können dann bestimmte Teile oder Bereiche der Fahrzeugkarosserie 12, unter Umständen nach Vorgabe eines bekannten Ziel-Temperaturprofils, vorgewärmt werden, so dass der eigentliche Aufheiz- und/oder Trockenvorgang schneller erfolgen kann als ohne die Vorwärmzone.In a modified and not specifically shown here dryer, a Lokaltemperiereinrichtung 50 or 70 may also be provided alternatively or in addition to the Nachtemperierzone 38 in a Vortemperierzone, which is located in the transport direction in front of the tempering zone 18, in which the vehicle bodies 12 are tempered as a whole. In this preheating zone, certain parts or regions of the vehicle body 12 may then be preheated, possibly under specification of a known target temperature profile, so that the actual heating and / or drying process can take place more quickly than without the preheating zone.

Wie es bereits in Figur 4 angedeutet ist, können bei einer Lokaltemperiereinrichtung auch Luftdüsen 52 und Wärmestrahler 72 kombiniert vorhanden sein, um bestimmte Teile oder Bereiche der Fahrzeugkarosserie 12 gezielt zu temperieren.As it is already in FIG. 4 is indicated, in a Lokaltemperiereinrichtung also air nozzles 52 and heat radiator 72 may be combined to specifically control certain parts or areas of the vehicle body 12.

Claims (9)

  1. Apparatus for controlling the temperature of objects, in particular for drying coated vehicle bodies, with
    a) a housing (14);
    b) a temperature control tunnel (16) which is accommodated in the housing (14) and through which an object (12) is transportable in a transport direction by means of a transport system (30) ;
    c) at least one temperature control device (35, 50; 35, 70) for controlling the temperature of the object (12),
    wherein
    d) there is a local temperature control device (50; 70) by means of which the temperature of locally limited regions of the object (12) can be selectively controlled and which, for this purpose, comprises a plurality of temperature control units (52; 72) activatably and drivable independently of one another,
    e) the local temperature control device (50; 70) is arranged in a post temperature control zone (38) which is disposed in the transport direction downstream of a temperature control zone (18) in which the temperature of the object (12) as a whole is controlled,
    characterized in that
    f) temperature control units (52) of the local temperature control device (50) are designed as air nozzles (52) by means of which temperature-controlled air can be dispensed onto the object (12) .
  2. Apparatus according to Claim 1, characterized in that
    a) a detection device (40) with which a distribution of temperature on the surface of the object (12) can be detected is arranged in a test zone (36), wherein the test zone (36) is disclosed in the transport direction upstream of the local temperature control device (50; 70);
    b) output signals from the detection device (40) are processed by means of a control unit (58) to form control signals, by means of which the temperature control units (52; 72) of the local temperature control device (50; 70) are activated.
  3. Apparatus according to Claim 2, characterized in that the detection device (40) comprises a plurality of temperature sensors (42) by means of which at least the outer contour of the object (12) can be substantially detected.
  4. Apparatus according to Claim 3, characterized in that the temperature sensors (42) are arranged in the manner of a gantry.
  5. Apparatus according to one of Claims 1 to 4, characterized in that a further local temperature control device (50; 70) is arranged in a preliminary temperature control zone which is disclosed in the transport direction upstream of the temperature control zone (18) in which the temperature of the object (12) as a whole is controlled.
  6. Apparatus according to one of Claims 1 to 5, characterized in that at least one of the temperature control units (52; 72) of the local temperature control device (50; 70) is movable such that the main direction of radiation thereof can be adjusted.
  7. Apparatus according to one of Claims 1 to 6, characterized in that temperature control units (72) of the local temperature control device (70) are designed as heat radiators (72).
  8. Method for controlling the temperature of objects, in particular for drying coated vehicle bodies, in which objects (12) are transported through a temperature control tunnel (16) and the temperature of said objects is controlled by means of at least one temperature control device (35, 50; 35; 72),
    wherein
    the temperature of locally limited regions of the object (12) are selectively controlled by means of a local temperature control device (50; 70) in a post temperature control zone (38) which is disposed in the transport direction downstream of a temperature control zone (18) in which the temperature of the object (12) as a whole is controlled, characterized in that
    temperature-controlled air is dispensed onto the object (12) by temperature control units (52), which are designed as air nozzles (52), of the local temperature control device (50).
  9. Method according to Claim 8, characterized in that the locally limited regions of the object (12) are determined by means of a detection device (40) by means of which a temperature distribution on the surface of the object (12) is detected.
EP12778242.3A 2011-11-03 2012-10-17 Apparatus and method for controlling the temperature of objects Active EP2773914B1 (en)

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DE102011117666.0A DE102011117666B4 (en) 2011-11-03 2011-11-03 Apparatus and method for controlling the temperature of objects
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DE102014009945A1 (en) 2014-07-04 2016-01-07 Dürr Systems GmbH Painting process and paint shop for decorative painting
RU2667556C1 (en) * 2015-01-26 2018-09-21 Ниссан Мотор Ко., Лтд. Paint hot-drying oven and paint hot-drying method
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

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CA2012161C (en) * 1989-06-12 1999-03-16 Yoshio Tomioka Apparatus for painting
US5282145A (en) * 1991-08-29 1994-01-25 Ronald Lipson Method of repair paint curing for production lines and apparatus
US5456023A (en) * 1994-06-28 1995-10-10 Ransburg Corporation Advance cure paint spray booth
DE10045608A1 (en) * 2000-09-15 2002-03-28 Volkswagen Ag Drying method for lacquer-coated automobile body has heating power regulated in dependence on actual temperature of automobile body
US20070272150A1 (en) * 2003-07-24 2007-11-29 Werner Swoboda Device for Hardening a Coating of an Object, Which is Made of a Material Hardening Under Electromagnetic Radiation, Especially a Uv Lacquer or a Thermally Hardening Lacquer
DE102005060388A1 (en) * 2005-12-16 2007-06-21 Advanced Photonics Technologies Ag Drying system, for painted vehicle bodies, has a preliminary heating stage directed at selected surfaces before entering the drying kiln or tunnel
DE202008017366U1 (en) * 2008-09-09 2009-07-09 Wolf Verwaltungs Gmbh & Co. Kg System for controlling the cabin interior temperature in a drying and / or painting booth
DE102011011261A1 (en) 2011-02-15 2012-08-16 Eisenmann Ag Device for tempering vehicle bodies

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WO2013064214A1 (en) 2013-05-10
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DE102011117666A1 (en) 2013-05-08
PL2773914T3 (en) 2019-09-30

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