EP2983830B1 - Coating system having a cooling device - Google Patents

Coating system having a cooling device Download PDF

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Publication number
EP2983830B1
EP2983830B1 EP14716245.7A EP14716245A EP2983830B1 EP 2983830 B1 EP2983830 B1 EP 2983830B1 EP 14716245 A EP14716245 A EP 14716245A EP 2983830 B1 EP2983830 B1 EP 2983830B1
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EP
European Patent Office
Prior art keywords
coating system
heat exchanger
air
coating
cooling
Prior art date
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EP14716245.7A
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German (de)
French (fr)
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EP2983830A1 (en
Inventor
Björn SCHENKE
Ralf Schäfer
Armin Hoderlein
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Duerr Systems AG
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Duerr Systems AG
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Priority to PL14716245T priority Critical patent/PL2983830T3/en
Publication of EP2983830A1 publication Critical patent/EP2983830A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0409—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material the pumps being driven by a hydraulic or a pneumatic fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/58—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter preventing deposits, drying-out or blockage by recirculating the fluid to be sprayed from upstream of the discharge opening back to the supplying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/002—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour incorporating means for heating or cooling, e.g. the material to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1042—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/60—Ventilation arrangements specially adapted therefor

Definitions

  • the invention relates to a coating installation for coating components with a coating agent, in particular in the form of a painting installation for painting motor vehicle body components with a paint.
  • pneumatically driven paint supply pumps which are arranged in a paint supply space of the paint shop, are often used to convey the paint to be applied.
  • the drive of these paint supply pumps by means of compressed air, which is then discharged via an exhaust port of the ink supply pump.
  • One way of removing the exhaust air from the paint supply pumps is to deliver them via a silencer in the immediate ambient air.
  • Another way of removing the exhaust air from the paint supply pumps is to collect them via air ducts in the paint supply room and then to lead into the open. In both cases, however, the exhaust air of the pneumatically driven ink supply pumps is not used.
  • the invention is therefore based on the object to provide a correspondingly improved coating system.
  • the invention is based on the technical-physical knowledge that the exhaust air of the pneumatically driven ink supply pumps is relaxed and cools due to the expansion.
  • the cold exhaust air flow of the pneumatically driven pumps can therefore be used for cooling purposes.
  • the invention therefore provides a cooling device which cools a heating sensitive component (e.g., railhouse) of the coating equipment by means of the cold exhaust air flow of the pump.
  • a heating sensitive component e.g., railhouse
  • the cooling device has at least one first heat exchanger in order to transfer heat from the heating-sensitive component (eg paint line, railhouse) of the coating system to the cold exhaust air flow of the pump, whereby the heating-sensitive component of the coating system is cooled.
  • the heating-sensitive component eg paint line, railhouse
  • a plurality of heat exchangers are connected in series.
  • the first heat exchanger is an air / air heat exchanger, ie both the heat supply to the hot side of the heat exchanger and the heat removal on the cold side of the heat exchanger via an air flow.
  • the first heat exchanger is an air / water heat exchanger, d. H.
  • an air flow is passed through the heat exchanger, namely the cold exhaust air flow of the pump, whereas on the hot side of the heat exchanger, a water flow is passed through the heat exchanger.
  • the heat exchanger is preferably a recuperator, i. a heat exchanger with an indirect heat transfer between cold side and hot side and a material separation between cold side and hot side.
  • the cooling device has a cooling circuit, which connects the heating-sensitive component of the coating system with the first heat exchanger, the cooling circuit containing a cooling medium (eg air, water) to the dissipated heat from the heating-sensitive component of the coating system to the first heat exchanger to transport.
  • a cooling medium eg air, water
  • the cooling medium is preferably conveyed in the cooling circuit by a pump in circulation operation.
  • the heating-sensitive component of the coating installation can be, for example, a pipeline, for example a coating medium line or a paint guide line.
  • a pipeline for example a coating medium line or a paint guide line.
  • Such pipelines are known from conventional coating systems or paint shops and therefore need not be described in detail.
  • the cooling circuit is connected via a second heat exchanger with the respective coating medium line, wherein the second heat exchanger transfers the dissipated heat from the coating medium line to the cooling circuit, from where the dissipated heat from the first heat exchanger to the cold exhaust air flow of the pump is transmitted.
  • the warming-sensitive component of the coating system is a so-called “railhouse”, ie a protective housing which surrounds a travel axis of a robot (eg painting robot, handling robot).
  • a robot eg painting robot, handling robot.
  • Such "rail houses” are for example in DE 102 34 915 A1 described and also belong to the general expertise, so that in this respect can be dispensed with a detailed description.
  • the cooling circuit introduces cold air into the protective housing ("railhouse”) and removes warm air from the protective housing ("railhouse”) in order to lower the internal temperature of the protective housing ("railhouse”).
  • the cooling of the compressed air used to drive the pump can lead to the formation of condensation or ice formation (icing) on the components of the system which come into contact with the relaxed, cold exhaust air from the pump.
  • the connected to the exhaust port of the pump cold air line is therefore provided on its outside with a thermal insulation to avoid condensation or ice formation on the outside of the cold air line.
  • the inventive idea of thermal insulation of the cold air line is independent of a cooling device of its own worthy of protection.
  • the coating installation according to the invention preferably has a plurality of pneumatically driven pumps each having an exhaust air connection, the exhaust air connections of the pumps opening into a common cold air duct, which is preferably connected to the first heat exchanger.
  • the pneumatic pump may be designed as a piston pump or as a diaphragm pump, however, the invention is not limited to these designs of the pump.
  • pneumatically driven pumps are preferably arranged in a paint mixing chamber of the coating installation, which is known per se from the prior art and therefore need not be described in detail.
  • the heating-sensitive component of the coating installation can be, for example, a pipeline or a so-called "railhouse".
  • Another example of the warming-sensitive component of the coating system is a paint booth.
  • the interior of a paint booth usually has to be air-conditioned, so that the painting within the spray booth under constant climatic conditions takes place, which is important for an optimal painting result.
  • the cold exhaust air of the pneumatically driven pump can therefore also be used for cooling or air conditioning of the paint shop, which can significantly reduce the energy required for air conditioning of the paint booth. This is of particular importance because the energy consumption of a paint shop makes up a large proportion of the total energy consumption of a motor vehicle factory.
  • FIG. 1 shows a first embodiment of a painting according to the invention for painting of motor vehicle body components
  • the paint shop largely conventional is constructed so that can be dispensed with a detailed description of the structure and operation of the paint shop and in the following only the essential parts of the painting are described.
  • the paint shop has several colored lines 1-5, in which paints of different colors are circulating promoted to prevent settling of the paints in the loops 1-5.
  • the color guide lines 1-5 extend in each case through heat exchangers 6-10, which can be designed, for example, as a tube-in-tube heat exchanger and have the task of cooling the lacquer in the individual color guide lines 1-5.
  • the heat exchangers 6-10 are connected to a common cooling circuit 11, which contains water as a cooling medium, wherein the cooling water is conveyed in the cooling circuit 11 by a pump 12 in circulation operation.
  • the cooling circuit 11 extends through a further heat exchanger 13, wherein it is an air / water heat exchanger.
  • a cold air line 14 passes through the heat exchanger 13, wherein the cold air line 14 is supplied by exhaust air ports 15-21 of several pneumatically driven ink supply pumps 22-28 with cold air.
  • the paint supply pumps 22-28 can be designed conventionally as a diaphragm pump or as a piston pump, so that a detailed description of the ink supply pumps 22-28 can be dispensed with.
  • the ink supply pumps 22-28 are preferably arranged in a paint mixing room of the paint shop.
  • the compressed air supplied via the supply air connections 29-35 compressed air is relaxed and thereby cooled, so that is discharged via the exhaust ports 15-21 cold air into the cold air line 14.
  • the cold air then absorbs heat from the cooling water in the cooling circuit 11, whereby the temperature of the cooling water in the cooling circuit 11 is reduced.
  • the heat exchangers 6-10 then transfer heat from the paint in the color guide lines 1-5 to the cooling water in the cooling circuit 11, thereby cooling the paint in the color guide lines 1-5.
  • FIG. 2 shows a modification of the embodiment described above according to FIG. 1
  • FIG. 2 shows a modification of the embodiment described above according to FIG. 1
  • a special feature of this exemplary embodiment is that in this case a so-called railhouse 36 is cooled, ie a protective housing which surrounds a traveling axis of a robot (painting robot or handling robot) of the painting installation.
  • cooling medium in the cooling circuit 11 is air, so that can be dispensed with the additional heat exchanger 6-10 in the embodiment of Figure 1.
  • the circulating in the cooling circuit 11 cold air is introduced into the railhouse 36 and thereby heated.
  • the heated air is then returned to the cooling circuit 11 and cooled down again in the heat exchanger 13.
  • FIG. 3 a simplified cross-sectional view through the cold air line 14, which is provided on its outside with a heat insulation 37.
  • the thermal insulation 37 should achieve that the outside temperature on the lateral surface of the heat insulation 37 despite the low temperature of the cold air in the cold air line 14 is sufficiently large to prevent disturbing condensation or ice formation on the lateral surface of the heat insulation 37.

Description

Die Erfindung betrifft eine Beschichtungsanlage zur Beschichtung von Bauteilen mit einem Beschichtungsmittel, insbesondere in Form einer Lackieranlage zur Lackierung von Kraftfahrzeugkarosseriebauteilen mit einem Lack.The invention relates to a coating installation for coating components with a coating agent, in particular in the form of a painting installation for painting motor vehicle body components with a paint.

In modernen Lackieranlagen zur Lackierung von Kraftfahrzeugkarosseriebauteilen werden zur Förderung des zu applizierenden Lacks oftmals pneumatisch angetriebene Farbversorgungspumpen eingesetzt, die in einem Farbversorgungsraum der Lackieranlage angeordnet sind. Der Antrieb dieser Farbversorgungspumpen erfolgt mittels Druckluft, die dann über einen Abluftanschluss von der Farbversorgungspumpe abgeführt wird. Eine Möglichkeit der Abführung der Abluft von den Farbversorgungspumpen besteht darin, diese über einen Schalldämpfer in die unmittelbare Umgebungsluft abzugeben. Eine andere Möglichkeit der Abführung der Abluft von den Farbversorgungspumpen besteht darin, diese über Luftkanäle im Farbversorgungsraum zu sammeln und dann ins Freie zu leiten. In beiden Fällen wird die Abluft der pneumatisch angetriebenen Farbversorgungspumpen jedoch nicht weiter genutzt.In modern paint shops for painting motor vehicle body components, pneumatically driven paint supply pumps, which are arranged in a paint supply space of the paint shop, are often used to convey the paint to be applied. The drive of these paint supply pumps by means of compressed air, which is then discharged via an exhaust port of the ink supply pump. One way of removing the exhaust air from the paint supply pumps is to deliver them via a silencer in the immediate ambient air. Another way of removing the exhaust air from the paint supply pumps is to collect them via air ducts in the paint supply room and then to lead into the open. In both cases, however, the exhaust air of the pneumatically driven ink supply pumps is not used.

Ferner ist zum Stand der Technik hinzuweisen auf DE 20 08 716 A , EP 2 359 940 A1 , EP 1 449 416 B1 und DE 29 07 310 A1 . Diese Druckschriften offenbaren jedoch keine Beschichtungsanlagen, bei denen die Abluft der pneumatisch angetriebenen Farbversorgungspumpe in irgendeiner Weise genutzt wird.Furthermore, it should be noted on the prior art DE 20 08 716 A . EP 2 359 940 A1 . EP 1 449 416 B1 and DE 29 07 310 A1 , However, these documents do not disclose coating equipment in which the exhaust air of the pneumatically driven ink supply pump is used in any way.

Aus DE 103 18 004 B3 ist eine Beschichtungsanlage gemäß dem Oberbegriff von Anspruch 1 bekannt. Allerdings arbeitet diese Beschichtungsanlage noch nicht optimal.Out DE 103 18 004 B3 a coating system according to the preamble of claim 1 is known. However, this coating system is not working optimally.

Schließlich ist zum Stand der Technik auch hinzuweisen auf US 4 351 482 A .Finally, the state of the art should also be noted US 4,351,482 A. ,

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine entsprechend verbesserte Beschichtungsanlage zu schaffen.The invention is therefore based on the object to provide a correspondingly improved coating system.

Diese Aufgabe wird durch eine erfindungsgemäße Beschichtungsanlage gemäß dem Hauptanspruch gelöst.This object is achieved by a coating system according to the invention according to the main claim.

Die Erfindung beruht auf der technisch-physikalischen Erkenntnis, dass die Abluft der pneumatisch angetriebenen Farbversorgungspumpen entspannt ist und sich aufgrund der Expansion abkühlt. Der kalte Abluftstrom der pneumatisch angetriebenen Pumpen kann deshalb zu Kühlzwecken eingesetzt werden.The invention is based on the technical-physical knowledge that the exhaust air of the pneumatically driven ink supply pumps is relaxed and cools due to the expansion. The cold exhaust air flow of the pneumatically driven pumps can therefore be used for cooling purposes.

Die Erfindung sieht deshalb eine Kühleinrichtung vor, die eine erwärmungsempfindliche Komponente (z.B. Farbringleitung, Railhouse) der Beschichtungsanlage mittels des kalten Abluftstroms der Pumpe kühlt.The invention therefore provides a cooling device which cools a heating sensitive component (e.g., railhouse) of the coating equipment by means of the cold exhaust air flow of the pump.

Hierzu weist die Kühleinrichtung mindestens einen ersten Wärmetauscher auf, um Wärme von der erwärmungsempfindlichen Komponente (z.B. Farbringleitung, Railhouse) der Beschichtungsanlage auf den kalten Abluftstrom der Pumpe zu übertragen, wodurch die erwärmungsempfindliche Komponente der Beschichtungsanlage gekühlt wird. In Abhängigkeit von der erforderlichen Kühlleistung ist es im Rahmen der Erfindung auch möglich, dass mehrere Wärmetauscher in Reihe geschaltet werden.For this purpose, the cooling device has at least one first heat exchanger in order to transfer heat from the heating-sensitive component (eg paint line, railhouse) of the coating system to the cold exhaust air flow of the pump, whereby the heating-sensitive component of the coating system is cooled. Depending on the required cooling capacity, it is also possible within the scope of the invention that a plurality of heat exchangers are connected in series.

In einer Variante der Erfindung ist der erste Wärmetauscher ein Luft/Luft-Wärmetauscher, d.h. sowohl die Wärmezufuhr auf der Warmseite des Wärmetauschers als auch die Wärmeabfuhr auf der Kaltseite des Wärmetauschers erfolgt über einen Luftstrom.In a variant of the invention, the first heat exchanger is an air / air heat exchanger, ie both the heat supply to the hot side of the heat exchanger and the heat removal on the cold side of the heat exchanger via an air flow.

In einer anderen Variante der Erfindung ist der erste Wärmetauscher dagegen ein Luft/Wasser-Wärmetauscher, d. h. auf der Kaltseite des Wärmetauschers wird ein Luftstrom durch den Wärmetauscher geleitet, nämlich der kalte Abluftstrom der Pumpe, wohingegen auf der Warmseite des Wärmetauschers ein Wasserstrom durch den Wärmetauscher geleitet wird.In another variant of the invention, however, the first heat exchanger is an air / water heat exchanger, d. H. On the cold side of the heat exchanger, an air flow is passed through the heat exchanger, namely the cold exhaust air flow of the pump, whereas on the hot side of the heat exchanger, a water flow is passed through the heat exchanger.

Hinsichtlich der Bauweise des Wärmetauschers ist weiterhin zu erwähnen, dass der Wärmetauscher vorzugsweise ein Rekuperator ist, d.h. ein Wärmetauscher mit einer indirekten Wärmeübertragung zwischen Kaltseite und Warmseite und einer Stofftrennung zwischen Kaltseite und Warmseite.With regard to the construction of the heat exchanger, it should also be mentioned that the heat exchanger is preferably a recuperator, i. a heat exchanger with an indirect heat transfer between cold side and hot side and a material separation between cold side and hot side.

In einem bevorzugten Ausführungsbeispiel der Erfindung weist die Kühleinrichtung einen Kühlkreislauf auf, der die erwärmungsempfindliche Komponente der Beschichtungsanlage mit dem ersten Wärmetauscher verbindet, wobei der Kühlkreislauf ein Kühlmedium (z.B. Luft, Wasser) enthält, um die abzuführende Wärme von der erwärmungsempfindlichen Komponente der Beschichtungsanlage zu dem ersten Wärmetauscher zu transportieren.In a preferred embodiment of the invention, the cooling device has a cooling circuit, which connects the heating-sensitive component of the coating system with the first heat exchanger, the cooling circuit containing a cooling medium (eg air, water) to the dissipated heat from the heating-sensitive component of the coating system to the first heat exchanger to transport.

Das Kühlmedium wird in dem Kühlkreislauf vorzugsweise von einer Pumpe im Umlaufbetrieb gefördert.The cooling medium is preferably conveyed in the cooling circuit by a pump in circulation operation.

Es wurde bereits vorstehend kurz erwähnt, dass es sich bei der erwärmungsempfindlichen Komponente der Beschichtungsanlage beispielsweise um eine Rohrleitung handeln kann, beispielsweise eine Beschichtungsmittelleitung oder eine Farbringleitung. Derartige Rohrleitungen sind von herkömmlichen Beschichtungsanlagen bzw. Lackieranlagen bekannt und müssen deshalb nicht näher beschrieben werden.It has already been briefly mentioned above that the heating-sensitive component of the coating installation can be, for example, a pipeline, for example a coating medium line or a paint guide line. Such pipelines are known from conventional coating systems or paint shops and therefore need not be described in detail.

In einem bevorzugten Ausführungsbeispiel der Erfindung ist der Kühlkreislauf über einen zweiten Wärmetauscher mit der jeweiligen Beschichtungsmittelleitung verbunden, wobei der zweite Wärmetauscher die abzuführende Wärme von der Beschichtungsmittelleitung auf den Kühlkreislauf überträgt, von wo die abzuführende Wärme dann von dem ersten Wärmetauscher auf den kalten Abluftstrom der Pumpe übertragen wird.In a preferred embodiment of the invention, the cooling circuit is connected via a second heat exchanger with the respective coating medium line, wherein the second heat exchanger transfers the dissipated heat from the coating medium line to the cooling circuit, from where the dissipated heat from the first heat exchanger to the cold exhaust air flow of the pump is transmitted.

In einer anderen Variante der Erfindung handelt es sich bei der erwärmungsempfindlichen Komponente der Beschichtungsanlage um ein sogenanntes "Railhouse", d.h. um ein Schutzgehäuse, das eine Verfahrachse eines Roboters (z.B. Lackierroboter, Handhabungsroboter) umgibt. Derartige "Railhouses" sind beispielsweise in DE 102 34 915 A1 beschrieben und gehören auch zum allgemeinen Fachwissen, so dass diesbezüglich auf eine detaillierte Beschreibung verzichtet werden kann. In dieser Erfindungsvariante leitet der Kühlkreislauf kalte Luft in das Schutzgehäuse ("Railhouse") ein und führt warme Luft aus dem Schutzgehäuse ("Railhouse") ab, um die Innentemperatur des Schutzgehäuses ("Railhouse") zu senken.In another variant of the invention, the warming-sensitive component of the coating system is a so-called "railhouse", ie a protective housing which surrounds a travel axis of a robot (eg painting robot, handling robot). Such "rail houses" are for example in DE 102 34 915 A1 described and also belong to the general expertise, so that in this respect can be dispensed with a detailed description. In this variant of the invention, the cooling circuit introduces cold air into the protective housing ("railhouse") and removes warm air from the protective housing ("railhouse") in order to lower the internal temperature of the protective housing ("railhouse").

Weiterhin ist zu erwähnen, dass die Abkühlung der zum Antrieb der Pumpe dienenden Druckluft dazu führen kann, dass es an den Bauteilen der Anlage, die mit der entspannten, kalten Abluft der Pumpe in Kontakt kommen, zu Tauwasserbildung oder Eisbildung (Vereisung) kommen kann. In dem bevorzugten Ausführungsbeispiel der Erfindung ist die an den Abluftanschluss der Pumpe angeschlossene Kaltluftleitung deshalb an ihrer Außenseite mit einer Wärmeisolierung versehen, um Tauwasserbildung bzw. Eisbildung an der Außenseite der Kaltluftleitung zu vermeiden. Der erfindungsgemäße Gedanke einer Wärmeisolierung der Kaltluftleitung ist auch unabhängig von einer Kühleinrichtung von eigener schutzwürdiger Bedeutung.It should also be mentioned that the cooling of the compressed air used to drive the pump can lead to the formation of condensation or ice formation (icing) on the components of the system which come into contact with the relaxed, cold exhaust air from the pump. In the preferred embodiment of the invention, the connected to the exhaust port of the pump cold air line is therefore provided on its outside with a thermal insulation to avoid condensation or ice formation on the outside of the cold air line. The inventive idea of thermal insulation of the cold air line is independent of a cooling device of its own worthy of protection.

Ferner ist zu erwähnen, dass die erfindungsgemäße Beschichtungsanlage vorzugsweise mehrere pneumatisch angetriebene Pumpen aufweist, die jeweils einen Abluftanschluss aufweisen, wobei die Abluftanschlüsse der Pumpen in eine gemeinsame Kaltluftleitung münden, die vorzugsweise mit dem ersten Wärmetauscher verbunden ist.It should also be mentioned that the coating installation according to the invention preferably has a plurality of pneumatically driven pumps each having an exhaust air connection, the exhaust air connections of the pumps opening into a common cold air duct, which is preferably connected to the first heat exchanger.

Hinsichtlich der Bauweise und der Funktionsweise der pneumatisch angetriebenen Pumpe bestehen vielfältige Möglichkeiten. Beispielsweise kann die pneumatische Pumpe als Kolbenpumpe oder als Membranpumpe ausgeführt sein, jedoch ist die Erfindung nicht auf diese Bauweisen der Pumpe beschränkt.With regard to the design and operation of the pneumatically driven pump there are many possibilities. For example, the pneumatic pump may be designed as a piston pump or as a diaphragm pump, however, the invention is not limited to these designs of the pump.

Darüber hinaus ist zu erwähnen, dass die pneumatisch angetriebenen Pumpen vorzugsweise in einem Farbmischraum der Beschichtungsanlage angeordnet sind, was an sich aus dem Stand der Technik bekannt ist und deshalb nicht näher beschrieben werden muss.In addition, it should be mentioned that the pneumatically driven pumps are preferably arranged in a paint mixing chamber of the coating installation, which is known per se from the prior art and therefore need not be described in detail.

Es wurde bereits vorstehend erwähnt, dass es sich bei der erwärmungsempfindlichen Komponente der Beschichtungsanlage beispielsweise um eine Rohrleitung oder ein sogenanntes "Railhouse" handeln kann. Ein anderes Beispiel für die erwärmungsempfindliche Komponente der Beschichtungsanlage ist eine Lackierkabine. So muss der Innenraum einer Lackierkabine üblicherweise klimatisiert werden, damit die Lackierung innerhalb der Lackierkabine unter möglichst konstanten Klimabedingungen erfolgt, was für ein optimales Lackierergebnis wichtig ist. Die kalte Abluft der pneumatisch angetriebenen Pumpen kann deshalb auch zur Kühlung bzw. Klimatisierung der Lackieranlage eingesetzt werden, wodurch sich der Energieaufwand zur Klimatisierung der Lackierkabine wesentlich verringern lässt. Dies ist von besonderer Bedeutung, weil der Energieverbrauch einer Lackieranlage einen großen Anteil des gesamten Energieverbrauchs eines Kraftfahrzeugwerks ausmacht.It has already been mentioned above that the heating-sensitive component of the coating installation can be, for example, a pipeline or a so-called "railhouse". Another example of the warming-sensitive component of the coating system is a paint booth. Thus, the interior of a paint booth usually has to be air-conditioned, so that the painting within the spray booth under constant climatic conditions takes place, which is important for an optimal painting result. The cold exhaust air of the pneumatically driven pump can therefore also be used for cooling or air conditioning of the paint shop, which can significantly reduce the energy required for air conditioning of the paint booth. This is of particular importance because the energy consumption of a paint shop makes up a large proportion of the total energy consumption of a motor vehicle factory.

Andere vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet oder werden nachstehend zusammen mit der Beschreibung der bevorzugten Ausführungsbeispiele der Erfindung anhand der Figuren näher erläutert. Es zeigen:

Figur 1
eine schematische Darstellung einer erfindungsgemäßen Lackieranlage mit zahlreichen pneumatisch angetriebenen Pumpen, deren Abluft zur Kühlung von Farbringleitungen eingesetzt wird,
Figur 2
eine Abwandlung von Figur 1, wobei die kalte Abluft der Pumpen zur Kühlung eines sogenannten "Railhouses" eingesetzt wird, sowie
Figur 3
eine Querschnittsansicht durch eine Kaltluftleitung mit einer umgebenden Wärmeisolierung.
Other advantageous developments of the invention are characterized in the subclaims or are explained in more detail below together with the description of the preferred embodiments of the invention with reference to FIGS. Show it:
FIG. 1
a schematic representation of a painting according to the invention with numerous pneumatically driven pumps whose exhaust air is used for cooling of Farbringleitungen
FIG. 2
a modification of FIG. 1 , wherein the cold exhaust air of the pump for cooling a so-called "Railhouse" is used, as well
FIG. 3
a cross-sectional view through a cold air line with a surrounding heat insulation.

Figur 1 zeigt ein erstes Ausführungsbeispiel einer erfindungsgemäßen Lackieranlage zur Lackierung von Kraftfahrzeugkarosseriebauteilen, wobei die Lackieranlage weitgehend herkömmlich aufgebaut ist, so dass auf eine detaillierte Beschreibung des Aufbaus und der Funktionsweise der Lackieranlage verzichtet werden kann und im Folgenden nur die erfindungswesentlichen Teile der Lackieranlage beschrieben werden. FIG. 1 shows a first embodiment of a painting according to the invention for painting of motor vehicle body components, the paint shop largely conventional is constructed so that can be dispensed with a detailed description of the structure and operation of the paint shop and in the following only the essential parts of the painting are described.

Die Lackieranlage weist mehrere Farbringleitungen 1-5 auf, in denen Lacke unterschiedlicher Farben zirkulierend gefördert werden, um ein Absetzen der Lacke in den Ringleitungen 1-5 zu verhindern.The paint shop has several colored lines 1-5, in which paints of different colors are circulating promoted to prevent settling of the paints in the loops 1-5.

Die Farbringleitungen 1-5 verlaufen jeweils durch Wärmetauscher 6-10, die beispielsweise als Rohr-in-Rohr-Wärmetauscher ausgeführt sein können und die Aufgabe haben, den Lack in den einzelnen Farbringleitungen 1-5 zu kühlen.The color guide lines 1-5 extend in each case through heat exchangers 6-10, which can be designed, for example, as a tube-in-tube heat exchanger and have the task of cooling the lacquer in the individual color guide lines 1-5.

Die Wärmetauscher 6-10 sind an einen gemeinsamen Kühlkreislauf 11 angeschlossen, der als Kühlmedium Wasser enthält, wobei das Kühlwasser in dem Kühlkreislauf 11 von einer Pumpe 12 im Umlaufbetrieb gefördert wird.The heat exchangers 6-10 are connected to a common cooling circuit 11, which contains water as a cooling medium, wherein the cooling water is conveyed in the cooling circuit 11 by a pump 12 in circulation operation.

Dabei verläuft der Kühlkreislauf 11 durch einen weiteren Wärmetauscher 13, wobei es sich um einen Luft/Wasser-Wärmetauscher handelt.In this case, the cooling circuit 11 extends through a further heat exchanger 13, wherein it is an air / water heat exchanger.

An der Kaltseite des Wärmetauschers 13 verläuft eine Kaltluftleitung 14 durch den Wärmetauscher 13, wobei die Kaltluftleitung 14 von Abluftanschlüssen 15-21 von mehreren pneumatisch angetriebenen Farbversorgungspumpen 22-28 mit Kaltluft versorgt wird.On the cold side of the heat exchanger 13, a cold air line 14 passes through the heat exchanger 13, wherein the cold air line 14 is supplied by exhaust air ports 15-21 of several pneumatically driven ink supply pumps 22-28 with cold air.

Der Antrieb der Farbversorgungspumpen 22-28 erfolgt über Druckluft, die über jeweils einen Zuluftanschluss 29-35 zugeführt wird.The drive of the ink supply pumps 22-28 via compressed air, which is supplied via a respective supply air connection 29-35.

Die Farbversorgungspumpen 22-28 können in herkömmlicher Weise als Membranpumpe oder als Kolbenpumpe ausgeführt sein, so dass auf eine detaillierte Beschreibung der Farbversorgungspumpen 22-28 verzichtet werden kann.The paint supply pumps 22-28 can be designed conventionally as a diaphragm pump or as a piston pump, so that a detailed description of the ink supply pumps 22-28 can be dispensed with.

Es ist jedoch zu erwähnen, dass die Farbversorgungspumpen 22-28 vorzugsweise in einem Farbmischraum der Lackieranlage angeordnet sind.It should be noted, however, that the ink supply pumps 22-28 are preferably arranged in a paint mixing room of the paint shop.

Im Betrieb der Farbversorgungspumpen 22-28 wird die über die Zuluftanschlüsse 29-35 zugeführte Druckluft entspannt und dadurch abgekühlt, so dass über die Abluftanschlüsse 15-21 Kaltluft in die Kaltluftleitung 14 abgegeben wird.During operation of the paint supply pumps 22-28, the compressed air supplied via the supply air connections 29-35 compressed air is relaxed and thereby cooled, so that is discharged via the exhaust ports 15-21 cold air into the cold air line 14.

In dem Wärmetauscher 13 nimmt die Kaltluft dann Wärme von dem Kühlwasser in dem Kühlkreislauf 11 auf, wodurch die Temperatur des Kühlwassers in dem Kühlkreislauf 11 verringert wird.In the heat exchanger 13, the cold air then absorbs heat from the cooling water in the cooling circuit 11, whereby the temperature of the cooling water in the cooling circuit 11 is reduced.

Die Wärmetauscher 6-10 übertragen dann Wärme von dem Lack in den Farbringleitungen 1-5 auf das Kühlwasser in dem Kühlkreislauf 11, wodurch der Lack in den Farbringleitungen 1-5 gekühlt wird.The heat exchangers 6-10 then transfer heat from the paint in the color guide lines 1-5 to the cooling water in the cooling circuit 11, thereby cooling the paint in the color guide lines 1-5.

Figur 2 zeigt eine Abwandlung des vorstehend beschriebenen Ausführungsbeispiels gemäß Figur 1, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird, wobei für entsprechende Einzelheiten dieselben Bezugszeichen verwendet werden. FIG. 2 shows a modification of the embodiment described above according to FIG. 1 In order to avoid repetition, reference is made to the above description, wherein the same reference numerals are used for corresponding details.

Eine Besonderheit dieses Ausführungsbeispiels besteht darin, dass hierbei ein sogenanntes Railhouse 36 gekühlt wird, d.h. ein Schutzgehäuse, das eine Verfahrachse eines Roboters (Lackierroboter oder Handhabungsroboter) der Lackieranlage umgibt.A special feature of this exemplary embodiment is that in this case a so-called railhouse 36 is cooled, ie a protective housing which surrounds a traveling axis of a robot (painting robot or handling robot) of the painting installation.

Eine weitere Besonderheit besteht darin, dass das Kühlmedium in dem Kühlkreislauf 11 Luft ist, so dass auf die zusätzlichen Wärmetauscher 6-10 bei dem Ausführungsbeispiel gemäß Figur 1 verzichtet werden kann.Another special feature is that the cooling medium in the cooling circuit 11 is air, so that can be dispensed with the additional heat exchanger 6-10 in the embodiment of Figure 1.

Die in dem Kühlkreislauf 11 zirkulierende Kaltluft wird in das Railhouse 36 eingeleitet und dabei erwärmt. Die erwärmte Luft wird dann wieder in den Kühlkreislauf 11 zurückgeführt und in dem Wärmetauscher 13 wieder herabgekühlt.The circulating in the cooling circuit 11 cold air is introduced into the railhouse 36 and thereby heated. The heated air is then returned to the cooling circuit 11 and cooled down again in the heat exchanger 13.

Schließlich zeigt Figur 3 eine vereinfachte Querschnittsansicht durch die Kaltluftleitung 14, die an ihrer Außenseite mit einer Wärmeisolierung 37 versehen ist. Die Wärmeisolierung 37 soll erreichen, dass die Außentemperatur an der Mantelfläche der Wärmeisolierung 37 trotz der geringen Temperatur der Kaltluft in der Kaltluftleitung 14 ausreichend groß ist, um eine störende Tauwasserbildung oder Eisbildung an der Mantelfläche der Wärmeisolierung 37 zu verhindern.Finally shows FIG. 3 a simplified cross-sectional view through the cold air line 14, which is provided on its outside with a heat insulation 37. The thermal insulation 37 should achieve that the outside temperature on the lateral surface of the heat insulation 37 despite the low temperature of the cold air in the cold air line 14 is sufficiently large to prevent disturbing condensation or ice formation on the lateral surface of the heat insulation 37.

Die Erfindung ist nicht auf die vorstehend beschriebenen bevorzugten Ausführungsbeispiele beschränkt. Vielmehr ist eine Vielzahl von Abwandlungen und Varianten möglich, die ebenfalls von dem Erfindungsgedanken Gebrauch machen und deshalb in den Schutzbereich fallen. Darüber hinaus beansprucht die Erfindung auch Schutz für den Gegenstand und die Merkmale der Unteransprüche unabhängig von den in Bezug genommenen Ansprüchen. Insbesondere beansprucht die Erfindung auch eigenständigen Schutz für den Gedanken einer Wärmeisolierung der Kaltluftleitung zur Vermeidung der störenden Tauwasserbildung bzw. Eisbildung.The invention is not limited to the preferred embodiments described above. Rather, a variety of modifications and variants are possible, which also make use of the inventive idea and therefore fall within the scope. Moreover, the invention also claims protection for the subject matter and the features of the subclaims independently of the claims referred to. In particular, the invention also claims independent protection for the idea of thermal insulation of the cold air pipe to avoid the disturbing condensation or ice formation.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1-51-5
FarbringleitungenColor ring lines
6-106-10
Wärmetauscherheat exchangers
1111
KühlkreislaufCooling circuit
1212
Pumpepump
1313
Wärmetauscherheat exchangers
1414
KaltluftleitungCold air duct
15-2115-21
Abluftanschlüsseexhaust ports
22-2822-28
FarbversorgungspumpenPaint supply pumps
29-3529-35
Zuluftanschlüsseair intake connections
3636
RailhouseRail House
3737
Wärmeisolierung * * * * *Thermal insulation * * * * *

Claims (10)

  1. Coating system for coating components with a coating medium, in particular a painting system for painting motor vehicle bodywork components with a paint, having
    a) at least one pneumatic pump (22-28) with a feed air connection (29-35) for feeding in a feed air stream for mechanically powering the pump (22-28) and an exhaust air connection (15-21) for conducting away a depressurised, cold exhaust air stream, and
    b) a heating-sensitive component (1-5; 36) of the coating system,
    c) a cooling device (6-21) for cooling the heating-sensitive component (1-5; 36) of the coating system by means of the exhaust air stream of the pump (22-28), characterised in that,
    d) the cooling device (6-21) has at least one first heat exchanger (13) in order to transfer heat from the heating-sensitive component (1-5; 36) of the coating system to the cold exhaust air stream of the pump (22-28).
  2. Coating system according to claim 1, characterised in that the cooling device (6-21) comprises a series connection of several first heat exchangers (13) for transferring heat from the heating-sensitive component (1-5; 36) of the coating system to the cold exhaust air stream of the pump (22-28).
  3. Coating system according to one of the preceding claims, characterized in that,
    a) the first heat exchanger (13) is an air/air heat exchanger, or
    b) the first heat exchanger (13) is an air/water heat exchanger.
  4. Coating system according to one of the claims 2 or 3, characterised in that
    a) the cooling device (6-21) has a cooling circuit (11) which connects the heating-sensitive component (1-5; 36) of the coating system to the first heat exchanger (13) and
    b) the cooling circuit (11) contains a cooling medium in order to transport the heat to be removed from the heating-sensitive component (1-5; 36) of the coating system to the first heat exchanger (13).
  5. Coating system according to claim 4,
    characterized in that
    a) the cooling medium in the cooling circuit (11) is air, or
    b) the cooling medium in the cooling circuit (11) is water.
  6. Coating system according to one of the preceding claims, characterized in that,
    a) the heating-sensitive component (1-5; 36) of the coating system is a pipeline (1-5), in particular a coating medium line or a paint circuit line (1-5), and/or
    b) the cooling circuit (11) is connected by means of a second heat exchanger (6-10) to the coating medium line (1-5), wherein the second heat exchanger transfers the heat to be removed from the coating medium line to the cooling circuit (11).
  7. Coating system according to one of the claims 4 to 6, characterised in that
    a) the heating-sensitive component (1-5; 36) of the coating system is a protective housing (36), in particular a protective housing (36) around a travel axis of a robot, and
    b) the cooling circuit (11) introduces cold air into the protective housing (36) and conducts warm air out of the protective housing.
  8. Coating system according to one of the claims 2 to 7, characterized in that
    a) the exhaust air connection (15-21) of the pump (22-28) is connected by means of a cold air line (14) to the first heat exchanger (13), and
    b) the cold air line (14) has a thermal insulation on the outside thereof, said thermal insulation extending over a large part of the length of the cold air line (14).
  9. Coating system according to one of the preceding claims, characterized in that,
    a) the coating system has a paint mixing room in which coatings to be applied are prepared, and
    b) the at least one pneumatic pump (22-28) is arranged in the paint supply room of the coating system.
  10. Coating system according to one of the preceding claims, characterised in that the heating-sensitive component (1-5; 36) of the coating system is a paint booth which is air-conditioned by the cooling device (6-21).
EP14716245.7A 2013-04-12 2014-04-07 Coating system having a cooling device Active EP2983830B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14716245T PL2983830T3 (en) 2013-04-12 2014-04-07 Coating system having a cooling device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013006334.5A DE102013006334B4 (en) 2013-04-12 2013-04-12 Coating plant with a cooling device and use of a cold exhaust air flow of a pneumatically driven pump
PCT/EP2014/000925 WO2014166618A1 (en) 2013-04-12 2014-04-07 Coating system having a cooling device

Publications (2)

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EP2983830A1 EP2983830A1 (en) 2016-02-17
EP2983830B1 true EP2983830B1 (en) 2016-12-21

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US (1) US9956577B2 (en)
EP (1) EP2983830B1 (en)
KR (1) KR102217669B1 (en)
CN (1) CN105142795B (en)
BR (1) BR112015025548B1 (en)
DE (1) DE102013006334B4 (en)
ES (1) ES2641858T3 (en)
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WO (1) WO2014166618A1 (en)

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CN105413971A (en) * 2016-01-04 2016-03-23 京东方科技集团股份有限公司 Glue coating device
CN105618337B (en) * 2016-03-11 2017-11-21 中自环保科技股份有限公司 A kind of multi-functional application system and its application method

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PL2983830T3 (en) 2017-06-30
KR102217669B1 (en) 2021-02-22
WO2014166618A1 (en) 2014-10-16
CN105142795A (en) 2015-12-09
BR112015025548B1 (en) 2021-03-09
ES2641858T3 (en) 2017-11-14
DE102013006334A1 (en) 2014-10-16
US20160067731A1 (en) 2016-03-10
BR112015025548A2 (en) 2017-07-18
US9956577B2 (en) 2018-05-01
CN105142795B (en) 2017-09-05
DE102013006334B4 (en) 2015-02-05
KR20150142013A (en) 2015-12-21
EP2983830A1 (en) 2016-02-17

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