EP3717850B1 - Apparatus and method for controlling the temperature of workpieces - Google Patents

Apparatus and method for controlling the temperature of workpieces Download PDF

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Publication number
EP3717850B1
EP3717850B1 EP18799755.6A EP18799755A EP3717850B1 EP 3717850 B1 EP3717850 B1 EP 3717850B1 EP 18799755 A EP18799755 A EP 18799755A EP 3717850 B1 EP3717850 B1 EP 3717850B1
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EP
European Patent Office
Prior art keywords
temperature
workpieces
controlling
intermediate floor
tunnel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18799755.6A
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German (de)
French (fr)
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EP3717850A1 (en
EP3717850B8 (en
Inventor
Urs GÜMBEL
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Eisenmann GmbH
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Eisenmann SE
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Priority to PL18799755T priority Critical patent/PL3717850T3/en
Priority to HRP20211807TT priority patent/HRP20211807T1/en
Publication of EP3717850A1 publication Critical patent/EP3717850A1/en
Publication of EP3717850B1 publication Critical patent/EP3717850B1/en
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Publication of EP3717850B8 publication Critical patent/EP3717850B8/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
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/10—Temperature; Pressure
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • 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
    • F26B15/16—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 the objects or batches of materials being carried by wheeled trucks
    • 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
    • F26B15/18—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 the objects or batches of materials being carried by endless belts
    • 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
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/08—Parts thereof
    • F26B25/10—Floors, roofs, or bottoms; False bottoms
    • 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
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/08—Parts thereof
    • F26B25/12—Walls or sides; Doors
    • 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

  • the invention also relates to a corresponding method for controlling the temperature of workpieces, in particular vehicle bodies.
  • temperature control of the workpieces in particular drying, which is typically associated with heating the workpieces, is often necessary. This can serve to remove treatment liquid and / or solvent residues.
  • the temperature control can, however, also be necessary in order to start or end chemical processes, such as the hardening of a paint.
  • An example of such a conveyor is to the DE 10 2015 006 098 A1 referenced.
  • the inventor has recognized that it is only inadequately possible to thermally shield the driving area from the temperature control tunnel if the intermediate floor between the temperature control tunnel and the driving area is designed as a passive heat shield. This is because it has been shown that a corresponding heat shield, for example made from a sandwich material, is too expensive to manufacture and would also be too thick. Because in order to create space for such a passive heat shield, the connecting device which connects the chassis to the workpiece carrier through the intermediate floor would have to be lengthened so that the chassis and the workpiece carrier are sufficiently far apart. In particular in the case of a monorail floor conveyor, this would result in unfavorable leverage conditions which would cause the workpiece carrier and thus the workpiece to be transported to fluctuate greatly.
  • the inventor has therefore recognized that, in spite of a temperature control tunnel that is otherwise temperature controlled, it can be advantageous to provide the intermediate floor facing the driving area with active cooling and / or heating as required in order to also temperature control the driving area.
  • a sufficiently large heat shield on the chassis can be achieved within a lower overall height than when using a passive heat shield. This avoids temperatures that are too high or too low there.
  • both conveying through the temperature control tunnel and leading in and out again in the opposite direction of the workpieces can be meant with regard to the conveying device.
  • the conveyor device can be, for example, a monorail floor conveyor, a chain conveyor or an electric suspension conveyor.
  • the intermediate floor can also be arranged as a suspended ceiling, for example in the case of an electric monorail, but also at the top.
  • the use of active heating can also be used in reverse to heat in a cooling area of the temperature control tunnel in the direction of the driving area.
  • the active cooling and / or heating comprises a cavity which is arranged in the intermediate floor and is set up so that a cooling or heating medium can flow through it.
  • cooling and / or heating means can be connected to the cavity.
  • the supplies can also take place both along a conveying direction of the conveying device and in a direction transverse to it.
  • the active cooling and / or heating comprises a plurality of cavities which are arranged in the intermediate floor.
  • the cavities can be arranged and / or configured differently in the conveying direction or transversely thereto.
  • the plurality of cavities can be set up so that cooling or heating means at different temperatures, with different throughputs and / or different heat capacities can flow through them.
  • the multiple cavities can also be arranged next to one another in such a way that a cavity closer to the temperature control tunnel can have a different cooling or heating capacity than a cavity closer to the driving area.
  • the multiple cavities have different flow cross-sections.
  • the multiple cavities can also be supplied individually, in groups and / or together.
  • the cooling or heating medium can be a gas or a liquid, the flow of which through the cavity or the plurality of cavities is generated by a fan or a pump specially provided for this purpose.
  • a fan or a pump can also be used for this, which are provided for other tasks within the scope of the temperature control, so that the corresponding cooling or heating means basically represents a flow branch from other flow systems that are already present.
  • the cavity or the plurality of cavities can be part of an open or a closed flow system.
  • the line section formed by the cavity can be arranged in a thermal circuit both in the primary circuit of a dryer (for example heating zone) and in the secondary circuit (for example cooling zone).
  • the hall air which typically has temperatures in the range of about 20-30 ° C., can also advantageously be used as a cooling or heating medium. This means that no additional cooling or heating units are required.
  • the cooling or heating output can be regulated by valves, flaps and / or slides in corresponding guide channels.
  • the speed of the fans or pumps can also be changed directly.
  • a plurality of air outlet openings which are connected to the cavity or the plurality of cavities, can advantageously be provided in a region of the intermediate floor. This enables the active cooling or heating of the false floor to be used to create an air curtain.
  • the hollow chamber structures which form the hollow space or the plurality of hollow spaces are advantageously designed in the form of extruded profiles, preferably made of plastic or aluminum.
  • the active cooling and / or heating comprises a Peltier element or a heating element.
  • the active cooling and / or heating can be controlled completely electrically without having to provide installations for conveying coolant or heating medium.
  • a Peltier element or a heating element By using a Peltier element or a heating element, the total thickness of the intermediate floor, especially in the vicinity of the connecting passage, can be further reduced compared to a variant with cavities.
  • a Peltier element or a heating element can also be provided in addition to active cooling and / or heating means of a cavity. In this case, you get at least a corresponding cooling or heating power support.
  • the intermediate floor has a collecting area, in particular a collecting channel, in which condensate from the air of the temperature control tunnel can collect.
  • a corresponding slope of the intermediate floor to the collecting area can be provided, the slope being able to run both transversely and in the conveying direction.
  • the intermediate floor can slope outwards starting from the connecting passage and a collecting channel or a drip edge can be arranged away from the connecting passage. As a result, the condensate moves away from the connecting passage, so that the undercarriage arranged below is not contaminated.
  • the intermediate floor has an insulating layer.
  • the dew point can be shifted with regard to the accumulation of condensate through an actively cooled area of the intermediate floor in such a way that it lies within the intermediate floor.
  • a for this purpose dimensioned insulating layer which, in the case of a dryer, points in the direction of the temperature control tunnel.
  • the active cooling and / or heating is set up to control the temperature to different degrees along a conveying direction of the conveying device.
  • the cooling or heating output can be adjusted depending on the temperatures prevailing in the temperature control tunnel.
  • the latter can also be provided independently of a change in the temperature control along the conveying direction.
  • the active cooling and / or heating is dimensioned in such a way that at the intended temperatures of the dryer tunnel, the temperatures of heat-sensitive components of the chassis in the driving area to a maximum of 60 ° C or a minimum of 0 ° C, in particular a maximum of 40 ° C or a minimum of 20 ° C.
  • the moving parts of the chassis or other components made of a typical plastic material are normally not damaged, so that the dimensioning of the cooling or heating output should be based on this temperature range.
  • FIG. 1 shows a temperature control device designated as a whole by 10, which is embodied here as a dryer, for example.
  • the temperature control device 10 has a temperature control tunnel 12 in which a workpiece 14 to be temperature controlled, here a vehicle body, is arranged.
  • the workpiece 14 is located on a workpiece carrier 16 which is moved through the temperature control tunnel 12 above an intermediate floor 18.
  • a conveying device 20 which comprises a monorail floor track 22 which is arranged below the intermediate floor 18 and along which a chassis 24 moves in a driving space 26.
  • the chassis 24 is connected to the workpiece carrier 16 via a connecting device 28 which, more precisely, consists of the Figures 2 to 5 can be seen.
  • the connecting device 28 passes through a connecting passage 30 in the intermediate floor 18, with a lamellar strip 31 above the connecting passage 30 as an additional dirt barrier (cf. Figures 3 to 5 ) is arranged, the slats of which are pushed aside by the connecting device 28.
  • the temperature control device 10 shown here has as shown Figure 2 can be seen on lateral supply air ducts 32, which are delimited from the temperature control tunnel 12 by an intermediate wall 34.
  • the intermediate wall 34 has outlet openings 36, from which hot air exits for tempering, in the present case in particular for drying, of the workpiece 14.
  • the intermediate floor 18 has a floor section 38 that is approximately wedge-shaped in cross section, especially in the inner area, above the driving space of the conveyor device 20.
  • the bottom section 38 has at least one cavity 40 in which cooling or heating medium flows.
  • the bottom section 38 is provided with connections (not shown) which allow a coolant or a heating medium to be supplied to the cavity 40 in order to flow through the bottom section 38 lengthwise along the conveying direction of the conveyor 20 in the example shown here.
  • the upper side of the bottom section 38 is provided with an outwardly sloping gradient starting from the connecting passage 30.
  • the floor section 38 is offset from an adjacent section 42 of the intermediate floor 18, in particular with an offset of less than 5 cm, offset downwards.
  • a collecting area 39 is formed at the outer end of the floor section 38, in which condensate, which condenses out of the air of the temperature control tunnel 12 on the upper side of the floor section 38 due to the active cooling, can collect.
  • drains are provided along the conveying direction for discharging the condensate.
  • Figure 3 shows an embodiment in which the bottom section 38 of the intermediate bottom 18 is not provided with a slope, but instead carries an insulating layer 44.
  • the insulating layer 44 is formed from such a material and dimensioned in such a way that at the temperatures to be expected that prevail during the operation of the temperature control device 10 in the temperature control tunnel 12 and the corresponding humidity values, the dew point of the respective condensate liquid inside the bottom section 38 and not on whose surface lie.
  • FIG. 5 shows Figure 5 an embodiment in which the bottom section 38 is designed as a simple support plate with the insulating layer 44 placed thereon. Furthermore, instead of the cavities 40, Peltier elements 50 are provided which, when electrically controlled, generate a cooling capacity. As a result, the Peltier elements 50 also provide an actively cooled component as a heat shield against the temperatures of the temperature control tunnel 12 in the area of the intermediate floor section 38. The use of the Peltier elements 50 allows essentially only the statics of the support plate to be taken into account for the construction of the base section 38. Cavities and connections for the corresponding cooling or heating medium are not necessary here.
  • the Peltier elements 50 can also only be provided as additional cooling elements in individual areas of the temperature control tunnel 12, for example in order to provide different cooling and heating capacities in this way along the conveying direction of the temperature control tunnel 12 depending on the temperature prevailing in the corresponding area of the temperature control tunnel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Heat Treatment Of Articles (AREA)
  • Coating Apparatus (AREA)
  • Drying Of Solid Materials (AREA)
  • Tunnel Furnaces (AREA)
  • General Induction Heating (AREA)
  • Control Of Heat Treatment Processes (AREA)
  • Automatic Control Of Machine Tools (AREA)

Description

HINTERGRUND DER ERFINDUNGBACKGROUND OF THE INVENTION 1. Gebiet der Erfindung1. Field of the invention

Die Erfindung betrifft eine Vorrichtung zum Temperieren von Werkstücken, insbesondere von Fahrzeugkarosserien, mit

  1. a) einem Temperiertunnel,
  2. b) einem Fahrraum,
  3. c) einem Zwischenboden, der zwischen dem Temperiertunnel und dem Fahrraum angeordnet ist und einen Verbindungsdurchgang aufweist,
  4. d) einer Fördereinrichtung zum Fördern der Werkstücke in dem Temperiertunnel,
  5. e) wobei die Fördereinrichtung mindestens einen Förderwagen mit einem Fahrwerk und einem Werkstückträger zur Aufnahme der zu temperierenden Werkstücke aufweist, wobei das Fahrwerk in dem Fahrraum angeordnet ist und mit einer Verbindungseinrichtung, die durch den Verbindungsdurchgang des Zwischenbodens hindurchragt, mit dem im Temperiertunnel angeordneten Werkstückträger verbunden ist.
The invention relates to a device for temperature control of workpieces, in particular vehicle bodies, with
  1. a) a temperature control tunnel,
  2. b) a driving area,
  3. c) an intermediate floor, which is arranged between the temperature control tunnel and the driving area and has a connecting passage,
  4. d) a conveyor device for conveying the workpieces in the temperature control tunnel,
  5. e) wherein the conveyor has at least one trolley with a chassis and a workpiece carrier for receiving the workpieces to be temperature-controlled, the chassis being arranged in the driving area and connected to the workpiece carrier arranged in the temperature-controlled tunnel by a connecting device that protrudes through the connecting passage of the intermediate floor is.

Die Erfindung betrifft ferner ein entsprechendes Verfahren zur Temperierung von Werkstücken, insbesondere von Fahrzeugkarosserien.The invention also relates to a corresponding method for controlling the temperature of workpieces, in particular vehicle bodies.

2. Beschreibung des Standes der Technik2. Description of the prior art

Vor allem aus dem Bereich der Automobilindustrie sind Oberflächenbehandlungsanlagen bekannt, in welchen Werkstücke, insbesondere Fahrzeugkarosserien, verschiedenen Oberflächenbehandlungen unterzogen werden. So werden Fahrzeugkarosserien beispielsweise in Tauchbädern gewaschen oder Tauchlackierungsbehandlungen unterzogen.Surface treatment systems in which workpieces, in particular vehicle bodies, are subjected to various surface treatments are known primarily from the field of the automotive industry. For example, vehicle bodies are washed in immersion baths or subjected to immersion painting treatments.

Häufig ist nach derartigen Oberflächenbehandlungen eine Temperierung der Werkstücke, insbesondere ein Trocknen, das typischerweise mit einem Aufheizen der Werkstücke verbunden ist, notwendig. Dies kann zum Entfernen von Behandlungsflüssigkeits- und/oder Lösungsmittelresten dienen. Das Temperieren kann jedoch auch dazu notwendig sein, um chemische Prozesse, wie beispielsweise das Aushärten eines Lacks, in Gang zu setzen bzw. zu beenden.After such surface treatments, temperature control of the workpieces, in particular drying, which is typically associated with heating the workpieces, is often necessary. This can serve to remove treatment liquid and / or solvent residues. The temperature control can, however, also be necessary in order to start or end chemical processes, such as the hardening of a paint.

Zu diesem Zweck ist bereits bekannt, die Werkstücke mit einer Fördereinrichtung durch eine Temperiervorrichtung der Oberflächenbehandlungsanlage hindurchzuführen.For this purpose, it is already known to pass the workpieces with a conveyor device through a temperature control device of the surface treatment system.

Seitens der Anmelderin wurde für eine Oberflächenbehandlungsanlage dabei eine Fördereinrichtung entwickelt, welche es erlaubt, das eigentliche Werkstück in einem Temperiertunnel zu führen, welcher im Wesentlichen von einem Fahrraum abgetrennt ist, in welchem sich ein Fahrwerk der Fördereinrichtung befindet. Dadurch werden Verschmutzungen des Werkstücks, die auf bewegliche Teile der Fördereinrichtung zurückgehen, möglichst gering gehalten. Beispielhaft für eine solche Fördereinrichtung sei auf die DE 10 2015 006 098 A1 verwiesen.The applicant developed a conveyor device for a surface treatment system which allows the actual workpiece to be guided in a temperature control tunnel which is essentially separated from a driving area in which a carriage of the conveyor device is located. In this way, contamination of the workpiece, which can be traced back to moving parts of the conveyor device, is kept as low as possible. An example of such a conveyor is to the DE 10 2015 006 098 A1 referenced.

Da in den Temperiervorrichtungen jedoch teilweise Temperaturen von bis zu etwa 240 °C vorherrschen können, hat sich gezeigt, dass wärmeempfindliche Bauteile, vor allem die beweglichen und elektronischen Teile, des Fahrwerks trotz ihrer Anordnung im Fahrraum Schaden nehmen können.However, since temperatures of up to about 240 ° C can sometimes prevail in the temperature control devices, it has been shown that heat-sensitive components, especially the moving and electronic parts of the chassis, can be damaged despite their location in the driving area.

ZUSAMMENFASSUNG DER ERFINDUNGSUMMARY OF THE INVENTION

Es ist daher Aufgabe der vorliegenden Erfindung, eine Vorrichtung eingangs genannter Art anzugeben, bei welcher das Fahrwerk der Fördereinrichtung im Fahrraum besser vor zu hohen und/oder zu niedrigen Temperaturen geschützt ist.It is therefore the object of the present invention to provide a device of the type mentioned at the outset, in which the chassis of the conveying device in the driving area is better protected from temperatures that are too high and / or too low.

Es ist ferner Aufgabe der Erfindung, ein entsprechendes Verfahren zum Temperieren von Werkstücken anzugeben.It is also an object of the invention to provide a corresponding method for temperature control of workpieces.

Erfindungsgemäß wird diese Aufgabe durch eine Vorrichtung eingangs genannter Art gelöst, bei welcher

  • f) der Zwischenboden zumindest bereichsweise mit einer aktiven Kühlung und/oder Heizung ausgestattet ist, um den Fahrraum zu temperieren.
According to the invention, this object is achieved by a device of the type mentioned in the introduction, in which
  • f) the intermediate floor is at least partially equipped with active cooling and / or heating in order to control the temperature of the driving area.

Der Erfinder hat erkannt, dass es nur unzureichend möglich ist, den Fahrraum gegenüber dem Temperiertunnel wärmetechnisch abzuschirmen, wenn man den Zwischenboden zwischen dem Temperiertunnel und dem Fahrraum als passiven Wärmeschild ausgestaltet. Denn es hat sich gezeigt, dass ein entsprechender Hitzeschild beispielsweise aus einem Sandwich-Material zu aufwendig in der Herstellung ist und zudem zu dick aufbauen würde. Denn um für einen solchen passiven Wärmeschild Platz zu schaffen, müsste die Verbindungseinrichtung, welche das Fahrwerk mit dem Werkstückträger durch den Zwischenboden verbindet verlängert werden, damit das Fahrwerk und der Werkstückträger ausreichend weit voneinander beabstandet sind. Insbesondere bei einer Einschienenbodenbahn würden sich dadurch ungünstige Hebelverhältnisse ergeben, welche den Werkstückträger und damit das zu transportierende Werkstück stark schwanken ließen.The inventor has recognized that it is only inadequately possible to thermally shield the driving area from the temperature control tunnel if the intermediate floor between the temperature control tunnel and the driving area is designed as a passive heat shield. This is because it has been shown that a corresponding heat shield, for example made from a sandwich material, is too expensive to manufacture and would also be too thick. Because in order to create space for such a passive heat shield, the connecting device which connects the chassis to the workpiece carrier through the intermediate floor would have to be lengthened so that the chassis and the workpiece carrier are sufficiently far apart. In particular in the case of a monorail floor conveyor, this would result in unfavorable leverage conditions which would cause the workpiece carrier and thus the workpiece to be transported to fluctuate greatly.

Der Erfinder hat daher erkannt, dass es trotz eines im Übrigen anderweitig temperierten Temperiertunnels günstig sein kann, den Zwischenboden zum Fahrraum hin je nach Bedarf mit einer aktiven Kühlung und/oder Heizung zu versehen, um auch den Fahrraum zu temperieren.The inventor has therefore recognized that, in spite of a temperature control tunnel that is otherwise temperature controlled, it can be advantageous to provide the intermediate floor facing the driving area with active cooling and / or heating as required in order to also temperature control the driving area.

Mithilfe einer solchen aktiven Kühlung und/oder Heizung kann innerhalb einer geringeren Bauhöhe als bei Verwendung eines passiven Wärmeschilds eine ausreichend große Wärmeabschirmung am Fahrwerk erreicht werden. Dadurch werden dort zu hohe oder zu niedrige Temperaturen vermieden.With the help of such active cooling and / or heating, a sufficiently large heat shield on the chassis can be achieved within a lower overall height than when using a passive heat shield. This avoids temperatures that are too high or too low there.

Im Rahmen der vorliegenden Erfindung kann hinsichtlich der Fördereinrichtung sowohl ein Hindurchfördern durch den Temperiertunnel als auch ein hineinführen und in umgekehrter Richtung wieder herausführen der Werkstücke gemeint sein. Ferner kann die Fördereinrichtung beispielsweise eine Einschienenbodenbahn, ein Kettenförderer oder eine Elektrohängebahn sein.In the context of the present invention, both conveying through the temperature control tunnel and leading in and out again in the opposite direction of the workpieces can be meant with regard to the conveying device. Furthermore, the conveyor device can be, for example, a monorail floor conveyor, a chain conveyor or an electric suspension conveyor.

Auch kann der Zwischenboden je nach verwendeter Fördereinrichtung als abgehängte Decke, wie beispielsweise bei einer Elektrohängebahn, oben aber auch seitlich angeordnet sein.Depending on the conveyor device used, the intermediate floor can also be arranged as a suspended ceiling, for example in the case of an electric monorail, but also at the top.

Obwohl die häufigste Anwendung wohl das aktive Kühlen des Zwischenbodens in einem Trockner oder Ofen einer Oberflächenbehandlungsanlage sein wird, kann durch Verwenden einer aktiven Heizung auch umgekehrt in einem Kühlbereich des Temperiertunnels in Richtung des Fahrraums geheizt werden.Although the most common application will probably be the active cooling of the false floor in a dryer or oven of a surface treatment plant, the use of active heating can also be used in reverse to heat in a cooling area of the temperature control tunnel in the direction of the driving area.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen genannt.Advantageous further developments of the invention are mentioned in the subclaims.

So kann vorteilhaft beispielsweise vorgesehen sein, dass die aktive Kühlung und/oder Heizung einen Hohlraum umfasst, der in dem Zwischenboden angeordnet und dazu eingerichtet ist, mit einem Kühl- oder Heizmittel durchströmt zu werden.For example, it can advantageously be provided that the active cooling and / or heating comprises a cavity which is arranged in the intermediate floor and is set up so that a cooling or heating medium can flow through it.

Zu diesem Zweck können entsprechende Kühl- und/oder Heizmittel mit dem Hohlraum verbunden sein. Auch können die Versorgungen dabei sowohl entlang einer Förderrichtung der Fördereinrichtung als auch in Querrichtung zu dieser erfolgen.For this purpose, appropriate cooling and / or heating means can be connected to the cavity. The supplies can also take place both along a conveying direction of the conveying device and in a direction transverse to it.

Vorteilhaft kann vorgesehen sein, dass die aktive Kühlung und/oder Heizung mehrere Hohlräume umfasst, die in dem Zwischenboden angeordnet sind.It can advantageously be provided that the active cooling and / or heating comprises a plurality of cavities which are arranged in the intermediate floor.

Dies ermöglicht es, unterschiedliche Bereiche unterschiedlich zu temperieren. Auch hier können die Hohlräume in Förderrichtung oder quer hierzu unterschiedlich angeordnet und/oder ausgestaltet sein. Insbesondere können die mehreren Hohlräume dazu eingerichtet sein, mit Kühl- oder Heizmittel mit unterschiedlicher Temperatur, mit unterschiedlichem Durchsatz und/oder unterschiedlicher Wärmekapazität durchströmt zu werden.This enables different areas to be tempered differently. Here, too, the cavities can be arranged and / or configured differently in the conveying direction or transversely thereto. In particular, the plurality of cavities can be set up so that cooling or heating means at different temperatures, with different throughputs and / or different heat capacities can flow through them.

Auch können die mehreren Hohlräume derart aneinander angeordnet sein, dass ein näher zum Temperiertunnel liegender Hohlraum eine andere Kühl- oder Heizleistung haben kann als ein näher zum Fahrraum liegender Hohlraum.The multiple cavities can also be arranged next to one another in such a way that a cavity closer to the temperature control tunnel can have a different cooling or heating capacity than a cavity closer to the driving area.

Vorteilhaft kann vorgesehen sein, dass die mehreren Hohlräume unterschiedliche Strömungsquerschnitte aufweisen.It can advantageously be provided that the multiple cavities have different flow cross-sections.

Dadurch können ebenfalls unterschiedliche Kühl- oder Heizleistungen erbracht werden.As a result, different cooling or heating capacities can also be provided.

Auch können die mehreren Hohlräume einzeln, in Gruppen und/oder gemeinsam versorgt werden.The multiple cavities can also be supplied individually, in groups and / or together.

Ferner kann das Kühl- oder Heizmittel ein Gas oder eine Flüssigkeit sein, dessen Strömung durch den Hohlraum bzw. die mehreren Hohlräume durch ein speziell hierfür vorgesehenes Gebläse bzw. eine Pumpe erzeugt wird. Alternativ oder zusätzlich kann hierfür jedoch auch ein Gebläse bzw. eine Pumpe verwendet werden, welche im Rahmen der Temperierung für andere Aufgaben vorgesehen sind, sodass das entsprechende Kühl- oder Heizmittel im Grunde einen Strömungsabzweig von anderen ohnehin vorhandenen Strömungssystemen darstellt.Furthermore, the cooling or heating medium can be a gas or a liquid, the flow of which through the cavity or the plurality of cavities is generated by a fan or a pump specially provided for this purpose. Alternatively or additionally, however, a fan or a pump can also be used for this, which are provided for other tasks within the scope of the temperature control, so that the corresponding cooling or heating means basically represents a flow branch from other flow systems that are already present.

Dabei kann der Hohlraum bzw. die mehreren Hohlräume Bestandteil eines offenen oder eines geschlossenen Strömungssystems sein. Beispielsweise kann der vom Hohlraum gebildete Leitungsabschnitt in einem thermischen Kreislauf sowohl im Primärkreislauf eines Trockners (beispielsweise Heizzone) als auch im Sekundärkreislauf (beispielsweise Kühlzone) angeordnet sein.The cavity or the plurality of cavities can be part of an open or a closed flow system. For example, the line section formed by the cavity can be arranged in a thermal circuit both in the primary circuit of a dryer (for example heating zone) and in the secondary circuit (for example cooling zone).

Vorteilhaft kann als Kühl- oder Heizmittel auch die Hallenluft, die typischerweise Temperaturen im Bereich von etwa 20-30°C hat, verwendet werden. Dadurch werden keine zusätzlichen Kühl- oder Heizaggregate notwendig.The hall air, which typically has temperatures in the range of about 20-30 ° C., can also advantageously be used as a cooling or heating medium. This means that no additional cooling or heating units are required.

Unter anderem kann eine Regelung der Kühl- oder Heizleistung durch Ventile, Klappen und/oder Schieber in entsprechenden Leitkanälen erfolgen. Es kann jedoch auch direkt eine Drehzahländerung der Gebläse bzw. Pumpen erfolgen.Among other things, the cooling or heating output can be regulated by valves, flaps and / or slides in corresponding guide channels. However, the speed of the fans or pumps can also be changed directly.

Vorteilhaft können in einem Bereich des Zwischenbodens mehrere Luftauslassöffnungen vorgesehen sein, welche mit dem Hohlraum bzw. den mehreren Hohlräumen verbunden sind. Dies ermöglicht, die aktive Kühlung oder Heizung des Zwischenbodens zum Erzeugen eines Luftschleiers zu verwenden.A plurality of air outlet openings, which are connected to the cavity or the plurality of cavities, can advantageously be provided in a region of the intermediate floor. This enables the active cooling or heating of the false floor to be used to create an air curtain.

Vorteilhafterweise sind die Hohlkammerstrukturen, welche den Hohlraum bzw. die mehreren Hohlräume ausbilden, in Form von Strangpressprofilen ausgeführt, vorzugsweise aus Kunststoff oder Aluminium.The hollow chamber structures which form the hollow space or the plurality of hollow spaces are advantageously designed in the form of extruded profiles, preferably made of plastic or aluminum.

Anstatt Hohlräumen, welche durch ein Kühl- oder Heizmittel durchströmt werden, vorzusehen, kann vorteilhaft auch vorgesehen sein, dass die aktive Kühlung und/oder Heizung ein Peltierelement bzw. ein Heizelement umfasst.Instead of providing cavities through which a cooling or heating medium flows, it can advantageously also be provided that the active cooling and / or heating comprises a Peltier element or a heating element.

Dadurch lässt sich die aktive Kühlung und/oder Heizung vollständig elektrisch ansteuern, ohne dass Installationen zur Kühl- oder Heizmittelförderung vorgesehen werden müssen. Auch kann durch die Verwendung eines Peltierelements bzw. eines Heizelements die Gesamtdicke des Zwischenbodens vor allem in der Nähe des Verbindungsdurchgangs gegenüber einer Variante mit Hohlräumen nochmals reduziert werden.As a result, the active cooling and / or heating can be controlled completely electrically without having to provide installations for conveying coolant or heating medium. By using a Peltier element or a heating element, the total thickness of the intermediate floor, especially in the vicinity of the connecting passage, can be further reduced compared to a variant with cavities.

Selbstverständlich kann ein Peltierelement bzw. ein Heizelement auch zusätzlich zu einer aktiven Kühlung und/oder Heizmittels eines Hohlraums vorgesehen werden. In diesem Fall erhält man zumindest eine entsprechende Kühl- oder Heizleistungsunterstützung.Of course, a Peltier element or a heating element can also be provided in addition to active cooling and / or heating means of a cavity. In this case, you get at least a corresponding cooling or heating power support.

Vorteilhaft kann vorgesehen sein, dass der Zwischenboden einen Sammelbereich, insbesondere eine Sammelrinne aufweist, in welchem sich Kondensat aus der Luft des Temperiertunnels sammeln kann.It can advantageously be provided that the intermediate floor has a collecting area, in particular a collecting channel, in which condensate from the air of the temperature control tunnel can collect.

Dazu kann ein entsprechendes Gefälle des Zwischenbodens zu dem Sammelbereich vorgesehen sein, wobei das Gefälle sowohl quer als auch in Förderrichtung verlaufen kann. Insbesondere kann der Zwischenboden ausgehend vom Verbindungsdurchgang nach außen hin abfallen und eine Sammelrinne oder eine Abtropfkante entfernt vom Verbindungsdurchgang angeordnet sein. Dadurch bewegt sich das Kondensat weg von dem Verbindungsdurchgang, sodass das darunter angeordnete Fahrwerk nicht verschmutzt wird.For this purpose, a corresponding slope of the intermediate floor to the collecting area can be provided, the slope being able to run both transversely and in the conveying direction. In particular, the intermediate floor can slope outwards starting from the connecting passage and a collecting channel or a drip edge can be arranged away from the connecting passage. As a result, the condensate moves away from the connecting passage, so that the undercarriage arranged below is not contaminated.

Vorteilhaft kann vorgesehen sein, dass der Zwischenboden eine Isolierschicht aufweist.It can advantageously be provided that the intermediate floor has an insulating layer.

Mithilfe einer solchen Isolierschicht kann im Hinblick auf den Kondensatanfall durch einen aktiv gekühlten Bereich des Zwischenbodens der Taupunkt derart verschoben werden, dass dieser innerhalb des Zwischenbodens liegt. Üblicherweise wird dies durch eine hierfür dimensionierte Isolierschicht, die im Falle eines Trockners in Richtung des Temperiertunnels weist, erreicht.With the aid of such an insulating layer, the dew point can be shifted with regard to the accumulation of condensate through an actively cooled area of the intermediate floor in such a way that it lies within the intermediate floor. Usually this is done with a for this purpose dimensioned insulating layer, which, in the case of a dryer, points in the direction of the temperature control tunnel.

Vorteilhaft kann vorgesehen sein, dass die aktive Kühlung und/oder Heizung dazu eingerichtet ist, entlang einer Förderrichtung der Fördereinrichtung unterschiedlich stark zu temperieren.It can advantageously be provided that the active cooling and / or heating is set up to control the temperature to different degrees along a conveying direction of the conveying device.

Dies ermöglicht es beispielsweise in unterschiedlichen Temperierzonen auch den Fahrraum mit einer unterschiedlichen Kühl- bzw. Heizleistung zu temperieren. Die Kühl- bzw. Heizleistung kann dabei in Abhängigkeit der im Temperiertunnel herrschenden Temperaturen angepasst werden.This makes it possible, for example, to control the temperature of the driving area in different temperature control zones with a different cooling or heating output. The cooling or heating output can be adjusted depending on the temperatures prevailing in the temperature control tunnel.

Letzteres kann auch unabhängig von einer Änderung der Temperierung entlang der Förderrichtung vorgesehen sein.The latter can also be provided independently of a change in the temperature control along the conveying direction.

Vorteilhaft ist vorgesehen, dass die aktive Kühlung und/oder Heizung derart dimensioniert ist, dass bei den vorgesehenen Temperaturen des Trocknertunnels die Temperaturen wärmeempfindlicher Bauteile des Fahrwerks im Fahrraum auf einen Bereich von maximal 60 °C bzw. minimal 0 °C, insbesondere maximal 40 °C bzw. minimal 20 °C begrenzt werden können. In diesem Temperaturbereich nehmen beispielsweise die beweglichen Bauteile des Fahrwerks oder andere Bauteile, die aus einem typischen Kunststoffmaterial bestehen, normalerweise keinen Schaden, sodass eine Dimensionierung der Kühl- oder Heizleistung sich an diesen Temperaturbereich orientieren sollten.It is advantageous that the active cooling and / or heating is dimensioned in such a way that at the intended temperatures of the dryer tunnel, the temperatures of heat-sensitive components of the chassis in the driving area to a maximum of 60 ° C or a minimum of 0 ° C, in particular a maximum of 40 ° C or a minimum of 20 ° C. In this temperature range, for example, the moving parts of the chassis or other components made of a typical plastic material are normally not damaged, so that the dimensioning of the cooling or heating output should be based on this temperature range.

Darüber hinaus kann vorgesehen sein, dass die aktive Kühlung und/oder Heizung eine Regelung umfassen, damit die angegebenen Maximaltemperaturen bzw. bei einer Kühlung die entsprechenden Minimaltemperaturen eingehalten werden.In addition, provision can be made for the active cooling and / or heating to include a control system so that the specified maximum temperatures or, in the case of cooling, the corresponding minimum temperatures are maintained.

Hinsichtlich des Verfahrens zum Temperieren von Werkstücken sind folgende Schritte vorgesehen:

  1. a) Bereitstellen einer Vorrichtung zum Temperieren von Werkstücken nach einer der oben genannten Weiterbildungen;
  2. b) Temperieren der Werkstücke wobei der Zwischenboden aktiv gekühlt oder geheizt wird.
With regard to the process for tempering workpieces, the following steps are provided:
  1. a) providing a device for temperature control of workpieces according to one of the above-mentioned developments;
  2. b) Tempering of the workpieces, whereby the intermediate floor is actively cooled or heated.

KURZE BESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS

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

Figur 1
eine perspektivische Ansicht einer erfindungsgemäßen Vorrichtung zum Temperieren von Werkstücken mit einem Temperiertunnel und einem Fahrraum, der durch einen Zwischenboden von dem Temperiertunnel abgetrennt ist;
Figur 2
einen Querschnitt durch die Vorrichtung aus Figur 1;
Figur 3
einen vergrößerten Ausschnitt aus dem Querschnitt gemäß Figur 2, welcher den Bereich des Zwischenbodens um einen Verbindungsdurchgang genauer zeigt;
Figur 4
einen vergrößerten Ausschnitt entsprechend Figur 3 eines alternativen Ausführungsbeispiels;
Figur 5
einen entsprechenden Ausschnitt nach Figur 3 entsprechend einem weiteren Ausführungsbeispiel,
Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. In these show:
Figure 1
a perspective view of a device according to the invention for temperature control of workpieces with a temperature control tunnel and a driving area which is separated from the temperature control tunnel by an intermediate floor;
Figure 2
a cross section through the device Figure 1 ;
Figure 3
an enlarged section of the cross section according to Figure 2 which shows in more detail the area of the false floor around a connecting passage;
Figure 4
an enlarged section accordingly Figure 3 an alternative embodiment;
Figure 5
a corresponding section Figure 3 according to a further embodiment,

BESCHREIBUNG BEVORZUGTER AUSFÜHRUNGSBEISPIELEDESCRIPTION OF PREFERRED EMBODIMENTS

Figur 1 zeigt eine insgesamt mit 10 bezeichnete Temperiervorrichtung, die hier beispielweise als Trockner ausbildet ist. Die Temperiervorrichtung 10 weist einen Temperiertunnel 12 auf, in welchem ein zu temperierendes Werkstück 14, hier eine Fahrzeugkarosserie, angeordnet ist. Figure 1 shows a temperature control device designated as a whole by 10, which is embodied here as a dryer, for example. The temperature control device 10 has a temperature control tunnel 12 in which a workpiece 14 to be temperature controlled, here a vehicle body, is arranged.

Das Werkstück 14 befindet sich auf einem Werkstückträger 16, welcher oberhalb eines Zwischenbodens 18 durch den Temperiertunnel 12 bewegt wird.The workpiece 14 is located on a workpiece carrier 16 which is moved through the temperature control tunnel 12 above an intermediate floor 18.

Hierzu ist eine Fördereinrichtung 20 vorgesehen, welche eine unterhalb des Zwischenbodens 18 angeordnete Einschienenbodenbahn 22 umfasst, entlang welcher sich ein Fahrwerk 24 in einem Fahrraum 26 bewegt.For this purpose, a conveying device 20 is provided which comprises a monorail floor track 22 which is arranged below the intermediate floor 18 and along which a chassis 24 moves in a driving space 26.

Das Fahrwerk 24 ist dazu mit dem Werkstückträger 16 über eine Verbindungseinrichtung 28 verbunden, welche genauer aus den Figuren 2 bis 5 ersichtlich ist. Die Verbindungseinrichtung 28 tritt dazu durch einen Verbindungsdurchgang 30 im Zwischenboden 18 hindurch, wobei als zusätzliche Schmutzbarriere über dem Verbindungsdurchgang 30 eine Lamellenleiste 31 (vgl. Figuren 3 bis 5) angeordnet ist, deren Lamellen von der Verbindungseinrichtung 28 beiseitegeschoben werden.To this end, the chassis 24 is connected to the workpiece carrier 16 via a connecting device 28 which, more precisely, consists of the Figures 2 to 5 can be seen. For this purpose, the connecting device 28 passes through a connecting passage 30 in the intermediate floor 18, with a lamellar strip 31 above the connecting passage 30 as an additional dirt barrier (cf. Figures 3 to 5 ) is arranged, the slats of which are pushed aside by the connecting device 28.

Ferner weist die hier gezeigte Temperiervorrichtung 10 wie aus Figur 2 ersichtlich seitliche Zuluftkanäle 32 auf, welche durch eine Zwischenwand 34 gegenüber dem Temperiertunnel 12 abgegrenzt sind. Die Zwischenwand 34 weist Auslassöffnungen 36 auf, aus welchen Heißluft zum Temperieren, im hier vorliegenden Fall insbesondere zum Trocknen, des Werkstücks 14 austritt.Furthermore, the temperature control device 10 shown here has as shown Figure 2 can be seen on lateral supply air ducts 32, which are delimited from the temperature control tunnel 12 by an intermediate wall 34. The intermediate wall 34 has outlet openings 36, from which hot air exits for tempering, in the present case in particular for drying, of the workpiece 14.

Wie aus Figur 2 und insbesondere den Vergrößerungsausschnitten der Figuren 3 bis 5 ersichtlich ist, weist der Zwischenboden 18 vor allem im innnenliegenden Bereich, oberhalb des Fahrraumes der Fördereinrichtung 20 einen im Querschnitt etwa keilförmigen Bodenabschnitt 38 auf.How out Figure 2 and in particular the enlarged sections of the Figures 3 to 5 As can be seen, the intermediate floor 18 has a floor section 38 that is approximately wedge-shaped in cross section, especially in the inner area, above the driving space of the conveyor device 20.

Erfindungsgemäß ist nun vorgesehen, dass der Bodenabschnitt 38 mindestens einen Hohlraum 40 aufweist, in welchem Kühl- oder Heizmittel strömt. Dazu ist der Bodenabschnitt 38 mit nicht gezeigten Anschlüssen versehen, welche es erlauben, dem Hohlraum 40 ein Kühlmittel oder ein Heizmittel zuzuführen, um im hier gezeigten Beispiel den Bodenabschnitt 38 der Länge nach entlang der Förderrichtung der Fördereinrichtung 20 zu durchströmen.According to the invention, it is now provided that the bottom section 38 has at least one cavity 40 in which cooling or heating medium flows. For this purpose, the bottom section 38 is provided with connections (not shown) which allow a coolant or a heating medium to be supplied to the cavity 40 in order to flow through the bottom section 38 lengthwise along the conveying direction of the conveyor 20 in the example shown here.

Auf diese Weise werden im Fahrraum 26 vor allem die wärmeempfindlichen Teile des Fahrwerks 24 wie ein Antriebsrad oder Anpressrollen vor zu hohen Temperaturen geschützt. Insbesondere werden dabei Maximaltemperaturen von 60 °C nicht überschritten.In this way, especially the heat-sensitive parts of the chassis 24, such as a drive wheel or pressure rollers, are protected from excessively high temperatures in the driving area 26. In particular, maximum temperatures of 60 ° C. are not exceeded.

Wie ferner aus Figur 3 ersichtlich ist, ist die Oberseite des Bodenabschnitts 38 mit einem von dem Verbindungsdurchgang 30 ausgehenden nach außen hin abfallenden Gefälle versehen. Zudem ist der Bodenabschnitt 38 gegenüber einem benachbarten Abschnitt 42 des Zwischenbodens 18 mit einem Versatz, insbesondere mit einem Versatz von weniger als 5 cm, nach unten versetzt. Dadurch bildet sich am äußeren Ende des Bodenabschnitts 38 ein Sammelbereich 39, in welchem sich Kondensat, welches sich aufgrund der aktiven Kühlung aus der Luft des Temperiertunnels 12 an der Oberseite des Bodenabschnitts 38 auskondensiert, sammeln kann.How further from Figure 3 As can be seen, the upper side of the bottom section 38 is provided with an outwardly sloping gradient starting from the connecting passage 30. In addition, the floor section 38 is offset from an adjacent section 42 of the intermediate floor 18, in particular with an offset of less than 5 cm, offset downwards. As a result, a collecting area 39 is formed at the outer end of the floor section 38, in which condensate, which condenses out of the air of the temperature control tunnel 12 on the upper side of the floor section 38 due to the active cooling, can collect.

Zum Abführen des Kondensats sind entlang der Förderrichtung im hier gezeigten Beispiel nicht dargestellte Abläufe vorgesehen.In the example shown here, drains (not shown) are provided along the conveying direction for discharging the condensate.

Figur 3 zeigt ein Ausführungsbeispiel, bei welchem der Bodenabschnitt 38 des Zwischenbodens 18 nicht mit einem Gefälle versehen ist, sondern stattdessen eine Isolierschicht 44 trägt. Die Isolierschicht 44 ist dabei aus einem solchen Material gebildet und derart dimensioniert, dass bei den zu erwartenden Temperaturen, die während des Betriebs der Temperiervorrichtung 10 im Temperiertunnel 12 vorherrschen, und den entsprechenden Luftfeuchtigkeitswerten der Taupunkt der jeweiligen Kondensatflüssigkeit im Inneren des Bodenabschnitts 38 und nicht an dessen Oberfläche liegen. Figure 3 shows an embodiment in which the bottom section 38 of the intermediate bottom 18 is not provided with a slope, but instead carries an insulating layer 44. The insulating layer 44 is formed from such a material and dimensioned in such a way that at the temperatures to be expected that prevail during the operation of the temperature control device 10 in the temperature control tunnel 12 and the corresponding humidity values, the dew point of the respective condensate liquid inside the bottom section 38 and not on whose surface lie.

Schließlich zeigt Figur 5 ein Ausführungsbeispiel, bei welchem der Bodenabschnitt 38 als einfaches Tragblech mit der aufgesetzten Isolierschicht 44 ausgestaltet ist. Ferner sind anstatt der Hohlräume 40 Peltierelemente 50 vorgesehen sind, welche elektrisch angesteuert eine Kühlleistung erzeugen. Auch die Peltierelemente 50 stellen dadurch im Bereich des Zwischenbodenabschnitts 38 ein aktiv gekühltes Bauelement als Wärmeabschirmung gegenüber den Temperaturen des Temperiertunnels 12 zur Verfügung. Die Verwendung der Peltierelemente 50 erlaubt dabei, für die Konstruktion des Bodenabschnitts 38 im Wesentlichen nur die Statik des Tragblechs zu berücksichtigen. Hohlräume und Anschlüsse für entsprechende Kühl- oder Heizmittel sind hier nicht notwendig.Finally shows Figure 5 an embodiment in which the bottom section 38 is designed as a simple support plate with the insulating layer 44 placed thereon. Furthermore, instead of the cavities 40, Peltier elements 50 are provided which, when electrically controlled, generate a cooling capacity. As a result, the Peltier elements 50 also provide an actively cooled component as a heat shield against the temperatures of the temperature control tunnel 12 in the area of the intermediate floor section 38. The use of the Peltier elements 50 allows essentially only the statics of the support plate to be taken into account for the construction of the base section 38. Cavities and connections for the corresponding cooling or heating medium are not necessary here.

Die Peltierelemente 50 können auch nur als Zusatzkühlelemente in einzelnen Bereichen des Temperiertunnels 12 vorgesehen sein, um beispielsweise auf diese Weise entlang der Förderrichtung des Temperiertunnels 12 je nach der im entsprechenden Bereich des Temperiertunnels vorherrschender Temperatur unterschiedliche Kühl- und Heizleistungen bereitzustellen. The Peltier elements 50 can also only be provided as additional cooling elements in individual areas of the temperature control tunnel 12, for example in order to provide different cooling and heating capacities in this way along the conveying direction of the temperature control tunnel 12 depending on the temperature prevailing in the corresponding area of the temperature control tunnel.

Claims (10)

  1. An apparatus (10) for controlling the temperature of workpieces (14), in particular of vehicle bodies, comprising
    a) a temperature control tunnel (12),
    b) a tunnel tube (26),
    c) an intermediate floor (18), which is arranged between the temperature control tunnel (12) and the tunnel tube (26) and has a connecting passage (30), and
    d) a conveying device (20) for conveying the workpieces (14) in the temperature control tunnel (12),
    e) wherein the conveying device (20) has at least one trolley having a running gear (24) and a workpiece carrier (16) for receiving the workpieces (14) to be temperature-controlled, wherein the running gear (24) is arranged in the tunnel tube (26) and, with a connecting device (28) which projects through the connecting passage (30) of the intermediate floor (18), is connected to the workpiece carrier (16) arranged in the temperature control tunnel (12),
    characterized in that
    f) the intermediate floor (18), at least in some regions, is equipped with an active cooling and/or heating system (40; 50) in order to control the temperature of the tunnel tube (26).
  2. The apparatus for controlling the temperature of workpieces, as claimed in claim 1, wherein the active cooling and/or heating system comprises a cavity (40), which is arranged in the intermediate floor (18) and is designed to be flowed through with a cooling or heating medium.
  3. The apparatus for controlling the temperature of workpieces, as claimed in claim 2, wherein the active cooling and/or heating system comprises a plurality of cavities (40), which are arranged in the intermediate floor (18).
  4. The apparatus for controlling the temperature of workpieces, as claimed in claim 3, wherein the plurality of cavities (40) have different flow cross sections.
  5. The apparatus for controlling the temperature of workpieces, as claimed in one of the preceding claims, wherein the active cooling and/or heating system comprises a Peltier element (50) or a heating element.
  6. The apparatus for controlling the temperature of workpieces, as claimed in one of the preceding claims, wherein the intermediate floor (18) has a collecting region (39), in particular a collecting channel, in which condensate from the air of the temperature control tunnel (12) can collect.
  7. The apparatus for controlling the temperature of workpieces, as claimed in one of the preceding claims, wherein the intermediate floor (18) has an insulating layer (44).
  8. The apparatus for controlling the temperature of workpieces, as claimed in one of the preceding claims, wherein the active cooling and/or heating system (40; 50) is designed to control the temperature to differing extent along a direction of conveyance of the conveying device (20).
  9. The apparatus for controlling the temperature of workpieces, as claimed in one of the preceding claims, wherein the active cooling and/or heating system (40; 50) is dimensioned such that, at the provided temperatures of the dryer tunnel (12), the temperatures of heat-sensitive components of the running gear (24) in the tunnel tube (26) can be limited to a range of maximally 60°C or minimally 0°C, in particular maximally 40°C or minimally 20°C.
  10. A method for controlling the temperature of workpieces (14), in particular of vehicle bodies, comprising the following steps:
    a) provision of an apparatus (10) for controlling the temperature of workpieces (14), as claimed in one of the preceding claims;
    temperature controlling of the workpieces (14), wherein the intermediate floor (18) is actively cooled or heated.
EP18799755.6A 2017-11-16 2018-11-07 Apparatus and method for controlling the temperature of workpieces Active EP3717850B8 (en)

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PL3717850T3 (en) 2021-12-20
US11486641B2 (en) 2022-11-01
US20200271384A1 (en) 2020-08-27
CN111465813A (en) 2020-07-28
DE102017126978A1 (en) 2019-05-16
HUE057051T2 (en) 2022-04-28
HRP20211807T1 (en) 2022-03-04
EP3717850A1 (en) 2020-10-07
EP3717850B8 (en) 2021-10-13
WO2019096638A1 (en) 2019-05-23

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