EP0481195A1 - Heating device for paint and spray air which are fed through hoses to a spray gun - Google Patents

Heating device for paint and spray air which are fed through hoses to a spray gun Download PDF

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Publication number
EP0481195A1
EP0481195A1 EP91114210A EP91114210A EP0481195A1 EP 0481195 A1 EP0481195 A1 EP 0481195A1 EP 91114210 A EP91114210 A EP 91114210A EP 91114210 A EP91114210 A EP 91114210A EP 0481195 A1 EP0481195 A1 EP 0481195A1
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EP
European Patent Office
Prior art keywords
heat exchanger
paint
heating
spray air
heating element
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.)
Withdrawn
Application number
EP91114210A
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German (de)
French (fr)
Inventor
Willi Mayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAYER, WILLI
Original Assignee
MAYER Willi
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Filing date
Publication date
Application filed by MAYER Willi filed Critical MAYER Willi
Publication of EP0481195A1 publication Critical patent/EP0481195A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/1606—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air
    • B05B7/1613—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
    • B05B7/1646—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed the material to be sprayed and the atomising fluid being heated by the same source of heat, without transfer of heat between atomising fluid and material to be sprayed
    • B05B7/1653—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed the material to be sprayed and the atomising fluid being heated by the same source of heat, without transfer of heat between atomising fluid and material to be sprayed the source of heat being a heat conductive fluid

Abstract

It is known to provide the hoses, leading to the spray gun, for the paint and spray air with a heating winding and, for the purposes of safety, to arrange it in a further hose. In order to avoid the large degree of weight of such a heating arrangement, it is proposed to provide a heat exchanger (1) with a heating element (2) and to arrange in the heat exchanger in each case a heating coil (4) for the paint and for the spray air. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Erhitzen der einer Farbspritzpistole durch Schläuche od. dgl. zugeführten Farbe und Spritzluft.The invention relates to a device for heating the paint and spray air supplied to a paint spray gun through hoses or the like.

Die Erfahrung hat gezeigt, daß sich insbesondere umweltfreundliche, wasserlösliche Farben sehr leicht verspritzen lassen, wenn die Farbe und die Spritzluft eine Temperatur von ca. 40* Celsius haben.Experience has shown that especially environmentally friendly, water-soluble paints can be sprayed very easily if the paint and the spray air have a temperature of approx. 40 * Celsius.

Es ist daher bekannt, die zur Farbspritzpistole führenden Schläuche für die Farbe und die Spritzluft mit einer Heizwicklung zu versehen und zur Sicherung in einem weiteren Schlauch anzuordnen.It is therefore known to provide the hoses leading to the paint spray gun for the paint and the spray air with a heating coil and to arrange them in a further hose for securing purposes.

Nachteilig ist, daß dadurch der Schlauch für die Farbe und die Spritzluft ein erhebliches Gewicht aufweist, so daß der Bediener der Farbspritzpistole schnell ermüdet. Nachteilig ist außerdem, daß durch die Anordnung von Heizvorrichtung und zusätzlichem Schlauch die Beweglichkeit der Schläuche verringert wird, so daß auch die Handhabbarkeit der Farbspritzpistole leidet.It is disadvantageous that the hose for the paint and the spray air has a considerable weight, so that the operator of the paint spray gun quickly tires. Another disadvantage is that the arrangement of the heating device and additional hose reduces the mobility of the hoses, so that the handling of the paint spray gun also suffers.

Die Aufgabe der Erfindung besteht daher darin, eine Vorrichtung der eingangs genannten Art vorzuschlagen, die ohne Beeinträchtigung der Handhabbarkeit der Farbspritzpistole die notwendige Erhitzung der zugeführten Farbe und Spritzluft gewährleistet.The object of the invention is therefore to propose a device of the type mentioned at the outset which ensures the necessary heating of the supplied paint and spray air without impairing the manageability of the paint spray gun.

Diese Aufgabe wird dadurch gelöst, daß ein Wärmetauscher mit eines Heizelement vorgesehen ist und daß im Wärmetauscher je eine Heizschlange für die Farbe und für die Spritzluft angeordnet ist.This object is achieved in that a heat exchanger is provided with a heating element and that a heating coil for the paint and for the spray air is arranged in the heat exchanger.

Vorzugsweise ist der Wärmetauscher zylinderförmig ausgebildet. Vorteilhaft ist der Wärmetauscher mit Wasser gefüllt.The heat exchanger is preferably cylindrical. The heat exchanger is advantageously filled with water.

Bei einer bevorzugten Ausführungsform ist als Heizelement ein elektrisch erhitzbarer Heizstab vorgesehen. Vorzugsweise ist der Heizstab im Wärmetauscher U-förmig verlaufend ausgebildet. Vorteilhaft ist der Heizstab in der Mitte des Wärmetauschers in Längsrichtung des Wärmetauschers verlaufend angeordnet.In a preferred embodiment, an electrically heatable heating element is provided as the heating element. The heating rod in the heat exchanger is preferably U-shaped. The heating element is advantageously arranged in the middle of the heat exchanger in the longitudinal direction of the heat exchanger.

Die Heizschlangen für die Farbe und die Spritzluft sind vorzugsweise als Kupferrohre ausgebildet. Vorteilhaft sind die Heizschlangen schraubenlinienförmig um den Heizstab im Wärmetauscher verlaufend angeordnet.The heating coils for the paint and the spray air are preferably designed as copper tubes. The heating coils are advantageously arranged helically around the heating rod in the heat exchanger.

Die Heizschlangen sind vorzugsweise derart einander entgegengesetzt verlaufend im Wärmetauscher angeordnet, daß die Farbe und die Spritzluft die Heizschlangen in entgegegesetzter Richtung durchströmen.The heating coils are preferably arranged in opposite directions in the heat exchanger in such a way that the paint and the spray air flow through the heating coils in the opposite direction.

Vorteilhaft ist im Wärmetauscher ein Temperaturfühler mit einem vom Temperaturfühler gesteuerten Schalter angeordnet, der mit dem Heizstab wirksam verbunden ist.A temperature sensor with a switch controlled by the temperature sensor, which is effectively connected to the heating element, is advantageously arranged in the heat exchanger.

Die Erfindung ist in der Zeichnung im Längsschnitt beispielhaft dargestellt.The invention is exemplified in the drawing in longitudinal section.

Ein zylinderförmiger Wärmetauscher 1 weist in seiner Mitte in Längsrichtung verlaufend einen U-förmig ausgebildeten Heizstab 2 auf, der elektrisch erhitzbar ist. Der Heizstab 2 ist an der einen Stirnseite 3 des Wärmetauscher 1 befestigt.A cylindrical heat exchanger 1 has a U-shaped heating rod 2 running in the middle in the longitudinal direction, which can be heated electrically. The heating element 2 is attached to one end face 3 of the heat exchanger 1.

Um den Heizstab 2 sind schraubenlinienförmig einander entgegenlaufend zwei Heizschlangen 4 und 5 aus Kupferrohr angeordnet, deren Eintritts-und Austrittsöffnungen an der anderen Stirnseite 6 des Wärmetauschers 1 angeordnet sind.Around the heating rod 2, two heating coils 4 and 5 made of copper tubing are arranged in a helical pattern, the inlet and outlet openings of which are arranged on the other end face 6 of the heat exchanger 1.

Die Heizschlange 4 weist an der Stirnseite 6 die Eintrittsöffnung 7 und die Austrittsöffnung 8 auf. Die Heizschlange 5 hat an der Stinseite 6 die Eintrittsöffnung 9, der die im Längsschnitt nicht dargestellte Austrittsöffnung für die Heizschlange an der Stirnseite gegenüberliegt.The heating coil 4 has the inlet opening 7 and the outlet opening 8 on the end face 6. The heating coil 5 has the inlet opening 9 on the face side 6, which is opposite the outlet opening (not shown in longitudinal section) for the heating coil on the front side.

Durch diese Anordnung der Eintritts- und Austrittsöffnungen wird das der Heizschlange 4 zugeführte Medium zunächst im Wärmetauscher 1 bis nahe zur Stirnseite 3 transportiert und strömt dann durch die schraubenlinienförmige Heizschlange in Richtung zur anderen Stirnseite 6. Das der Heizschlange 5 zugeführte Medium wird von der Eintrittsöffnung 9 zunächst in dem schraubenlinienförmigen Abschnitt der Heizschlange von der Stirnseite 6 nach der Stirnseite 3 bewegt und fließt dann zur nicht dargestellten Austrittsöffnung zurück.With this arrangement of the inlet and outlet openings, the medium supplied to the heating coil 4 is first transported in the heat exchanger 1 up to near the front side 3 and then flows through the helical heating coil in the direction of the other end side 6. The medium supplied to the heating coil 5 comes from the inlet opening 9 first moved in the helical section of the heating coil from the end face 6 to the end face 3 and then flows back to the outlet opening, not shown.

Wie die Zeichnung weiter zeigt, weist der Wärmetauscher 1 eine durch einen Ventildeckel 10 verschließbare Öffnung 11 auf, durch die der Wärmetauscher mit Wasser füllbar ist. Der Ventildeckel 10 verhindert das Entstehen eines Überdruckes.As the drawing further shows, the heat exchanger 1 has an opening 11 which can be closed by a valve cover 10 and through which the heat exchanger can be filled with water. The valve cover 10 prevents the creation of excess pressure.

In einer weiteren Öffnung 12 des Wärmetauschers 1 ist ein Thermometer 13 zur Anzeige der Wassertemperatur angeordnet. Schließlich ist in einer dritten Öffnung 14 des Wärmetauschers 1 ein Temperaturfühler 15 mit einem vom Temperaturfühler gesteuerten, nicht dargestellten Schalter angeordnet, der mit dem Heizstab 2 wirksam verbunden ist.A thermometer 13 for displaying the water temperature is arranged in a further opening 12 of the heat exchanger 1. Finally, a temperature sensor 15 is arranged in a third opening 14 of the heat exchanger 1 with a switch, not shown, which is controlled by the temperature sensor and is effectively connected to the heating element 2.

Bei Verwendung der erfindungsgemäßen Vorrichtung wird die Vorrichtung an eine elektrische Stromversorgung angeschlossen und durch Einstellen des Temperaturfühlers 15 der Heizstab 2 eingeschaltet, so daß sich das Wasser im Wärmetauscher 1 auf den eingestellten Sollwert erhitzt. An die Heizschlangen 4 und 5 werden die Schlauchleitungen für Farbe und für Spritzluft angeschlossen, so daß die Farbe und die Spritzluft über die Heizschlangen von dem erhitzten Wasser im Wärmetauscher 1 erwärmt werden.When using the device according to the invention, the device is connected to an electrical power supply and the heating element 2 is switched on by adjusting the temperature sensor 15, so that the water in the heat exchanger 1 heats up to the set value. The hose lines for paint and for spray air are connected to the heating coils 4 and 5, so that the paint and the spray air are heated by the heated water in the heat exchanger 1 via the heating coils.

Claims (10)

1. Vorrichtung zum Erhitzen der einer Farbspritzpistole durch Schläuche od. dgl. zugeführten Farbe und Spritzluft, dadurch gekennzeichnet, daß ein Wärmetauscher (1) alt einem Heizelement (2) vorgesehen ist und daß im Wärmetauscher je eine Heizschlange (4) und (5) für die Farbe und für die Spritzluft angeordnet ist.1. A device for heating a paint spray gun through hoses or the like. Paint and spray air supplied, characterized in that a heat exchanger (1) old a heating element (2) is provided and that in the heat exchanger each a heating coil (4) and (5) for the paint and for the spray air is arranged. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Wärmetauscher (1) zylinderförmig ausgebildet ist.2. Device according to claim 1, characterized in that the heat exchanger (1) is cylindrical. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Wärmetauscher (1) mit Wasser gefüllt ist.3. Apparatus according to claim 1 or 2, characterized in that the heat exchanger (1) is filled with water. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß als Heizelement ein elektrisch erhitzbarer Heizstab (2) vorgesehen ist.4. Device according to one of claims 1 to 3, characterized in that an electrically heatable heating element (2) is provided as the heating element. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Heizstab (2) im Wärmetauscher (1) U-förmig verlaufend ausgebildet ist.5. The device according to claim 4, characterized in that the heating element (2) in the heat exchanger (1) is U-shaped. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der Heizstab (2) in der Mitte des Wärmetauschers (1) in Längsrichtung des Wärmetauschers verlaufend angeordnet ist.6. The device according to claim 5, characterized in that the heating element (2) is arranged in the middle of the heat exchanger (1) extending in the longitudinal direction of the heat exchanger. 7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Heizschlangan (4)und (5) für die Farbe und die Spritzluft als Kupferrohre ausgebildet sind.7. Device according to one of claims 1 to 6, characterized in that the Heizschlangan (4) and (5) for the paint and the spray air are designed as copper tubes. 8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Heizschlangen (4) und (5) schraubenlinienförmig um den Heizstab (2) im Wärmetauscher (1) verlaufend angeordnet sind.8. The device according to claim 7, characterized in that the heating coils (4) and (5) are arranged helically around the heating rod (2) in the heat exchanger (1) extending. 9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Heizschlangen (4) und (5) derart einander entgegengesetzt verlaufend im Wärmetauscher (1) angeordnet sind, daß die Farbe und die Spritzluft die Heizschlangen in entgegengesetzter Richtung durchströmen.9. The device according to claim 8, characterized in that the heating coils (4) and (5) are arranged so as to run in opposite directions in the heat exchanger (1) that the paint and the spray air flow through the heating coils in the opposite direction. 10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß im Wärmetauscher (1) ein Temperaturfühler (15) mit einem vom Temperaturfühler gesteuerten Schalter angeordnet ist, der mit dem Heizstab (2) wirksam verbunden ist.10. Device according to one of claims 1 to 9, characterized in that in the heat exchanger (1) a temperature sensor (15) is arranged with a switch controlled by the temperature sensor, which is operatively connected to the heating element (2).
EP91114210A 1990-09-22 1991-08-24 Heating device for paint and spray air which are fed through hoses to a spray gun Withdrawn EP0481195A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9013414U 1990-09-22
DE9013414 1990-09-22

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EP0481195A1 true EP0481195A1 (en) 1992-04-22

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EP91114210A Withdrawn EP0481195A1 (en) 1990-09-22 1991-08-24 Heating device for paint and spray air which are fed through hoses to a spray gun

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1369181A1 (en) * 2002-06-05 2003-12-10 Peguform GmbH &amp; Co. KG Painting installation for coatings with high solids content

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE462318A (en) *
US2530799A (en) * 1950-11-21 Paint fbeheating and sfrayii
US2565543A (en) * 1949-02-03 1951-08-28 Reliable Products Mfg Co Inc Fluid preheating and dispensing apparatus
GB700595A (en) * 1952-06-19 1953-12-02 Vital Mfg Company Ltd Improvements relating to a method and apparatus for spraying lacquers
FR1048957A (en) * 1953-02-16 1953-12-28 Method and apparatus for spraying and heating organic coating compositions
US3465469A (en) * 1964-08-05 1969-09-09 Mc Graw Edison Co Liquid vaporizer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE462318A (en) *
US2530799A (en) * 1950-11-21 Paint fbeheating and sfrayii
US2565543A (en) * 1949-02-03 1951-08-28 Reliable Products Mfg Co Inc Fluid preheating and dispensing apparatus
GB700595A (en) * 1952-06-19 1953-12-02 Vital Mfg Company Ltd Improvements relating to a method and apparatus for spraying lacquers
FR1048957A (en) * 1953-02-16 1953-12-28 Method and apparatus for spraying and heating organic coating compositions
US3465469A (en) * 1964-08-05 1969-09-09 Mc Graw Edison Co Liquid vaporizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1369181A1 (en) * 2002-06-05 2003-12-10 Peguform GmbH &amp; Co. KG Painting installation for coatings with high solids content

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