EP0372040B1 - Flow-heater for materials - Google Patents
Flow-heater for materials Download PDFInfo
- Publication number
- EP0372040B1 EP0372040B1 EP89905626A EP89905626A EP0372040B1 EP 0372040 B1 EP0372040 B1 EP 0372040B1 EP 89905626 A EP89905626 A EP 89905626A EP 89905626 A EP89905626 A EP 89905626A EP 0372040 B1 EP0372040 B1 EP 0372040B1
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- European Patent Office
- Prior art keywords
- flow
- component
- heater
- flow heater
- heating
- 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.)
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- 239000000463 material Substances 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 239000003973 paint Substances 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract description 2
- 239000000975 dye Substances 0.000 abstract 2
- 230000003670 easy-to-clean Effects 0.000 abstract 1
- 238000012546 transfer Methods 0.000 description 6
- 210000004369 blood Anatomy 0.000 description 4
- 239000008280 blood Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 210000002381 plasma Anatomy 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Images
Classifications
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- 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
- F24H1/12—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 in which the water is kept separate from the heating medium
- F24H1/14—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 in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/16—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 in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled
-
- 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
- F24H1/12—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 in which the water is kept separate from the heating medium
- F24H1/14—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 in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/16—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 in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled
- F24H1/162—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 in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled using electrical energy supply
Definitions
- Flow paint heaters are usually used in paint spraying devices to preheat the paints which are subsequently to be applied with a spraying or spraying device.
- the heating of the colors leads to an improved material application and is carried out by means of the flow heater, which is interposed between a feed pump and a spraying or spraying device.
- the invention has for its object to provide a flow heater for a paint spraying device of the type mentioned, which allows a high volume material throughput with a simple structure and inexpensive to manufacture, ensures safe and reproducible heating of the paint and inexpensive to repair when the paint dries or is to be cleaned.
- the flow heater according to the invention is characterized by a number of considerable advantages. By dividing it into a first and a second component it is possible to separate the heating device from the component provided with the passage channel, so that the latter can be cleaned without the expensive and unprotected heating device being affected. For example, it is possible to place the first component provided with the passage channel separately from the main component in a cleaning bath or to remove adhering material residues by ultrasound exposure.
- a further advantage of the flow heater according to the invention is given in that the first component can be replaced in a simple manner, for example in the case of a color change or in an application in which the volume throughput of the color is to be changed.
- the second main component provided with the heating device is only required once and can be used for various first components. This measure results in a considerable cost reduction since, in comparison to the known flow heater for the most varied of applications and / or for maintenance purposes, only a few first components are required.
- Another advantage of the flow heater according to the invention is given by the fact that the first component can be constructed simply and robustly, while more sensitive parts, such as the ex-protected control device and the heating elements, are provided in the main component which is required only once, which is particularly important in the cleaning phase of the flow channel is separated from the first component and is therefore not subjected to any loads.
- the first component has a conical recess into which a conical extension of the second component can be inserted.
- This configuration ensures particularly good heat transfer from the second component to the first component, since, owing to the taper, the two components have a large, gap-free contact area.
- the conical design also ensures a secure fit, which proves to be particularly advantageous when the flow heater is used by untrained personnel under harsh operating conditions.
- a further advantageous embodiment of the flow heater according to the invention can also be given by the fact that a plurality of passage channels arranged parallel to one another are provided, which can additionally be connected to a common material inlet and a material outlet.
- a plurality of passage channels arranged parallel to one another are provided, which can additionally be connected to a common material inlet and a material outlet.
- Figure 1 is a side view, partly in section, of an embodiment of the flow heater of the paint sprayer according to the invention.
- the flow heater comprises a first component 2, which is provided with helical passage channels 1, and a second main component 3, which comprises a heating device 4.
- the heating device 4 of the second component 3 is designed in the form of a plurality of heating rods which are arranged in a conical extension 6.
- the heating elements are designed in the usual way and are connected to a control device (not shown in detail) and an overheating protection, which in turn is connected to a power connection 10.
- the second component 3 further comprises a control switch 11, only shown schematically.
- the first component 2 is essentially cup-shaped and has a conical recess 5 which is designed to match the conical extension 6 of the second main component 3. Due to the cup-like design, the first component 2 has a wall 7, in which helical passage channels 1 are formed.
- the passage channel 1 is connected to a material flow 8 or a material flow 9. When the passages 1 are connected in parallel, a flow is also possible if one of the passages 1 should be blocked.
- screws 12 are provided which extend through a recess in the bottom region of the first component 2 and can be screwed into a threaded recess of the conical extension 6 are.
- a separation of the first and the second component can be facilitated in that the screws are screwed into threaded bores 13 in the bottom of the first component 2, which are only shown in broken lines in FIG. 1 and are provided with the reference number 14.
- the screws 12 can be screwed into the threaded bore 13 after they have been removed and can be used to loosen the two components.
- the first component 2 can be cylindrical in terms of its outer dimensions, the passage channels 1 can be in the form of ring channels, but it is also possible to design the first component 2 polygonally, for example square, in terms of its outer dimensions.
- the flow heater according to the invention is thus characterized in that particularly good heat transfer values are ensured by the intimate connection between the removable part and the heating device, so that the paint pressed under high pressure and at high speed by the flow heater can be heated or preheated in a controllable manner .
- This controlled heating or preheating is not possible in the devices known from the prior art or is made considerably more difficult by the construction of the devices.
- the intimate connection between the detachable part and the heating device creates conditions in the assembled state, as is the case with a one-piece device, but at the same time, due to the detachable design, allows separation for cleaning, replacement or the like.
- first and second component it is possible to vary the dimensioning of the first and second component in a wide range, for example a different one To provide number of passages or to design the passages with different cross-sectional ratios.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Coating Apparatus (AREA)
- Nozzles (AREA)
- Resistance Heating (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen Durchflußerhitzer für die Erwärmung von unter hohem Druck stehender Farbe für ein Farbspritzgerät.The invention relates to a flow heater for heating high-pressure paint for a paint sprayer.
Bei Farbspritzgeräten werden üblicherweise Durchflußerhitzer verwendet, um die Farben vorzuwärmen, welche nachfolgend mit einer Sprüh- oder Spritzvorrichtung aufgebracht werden sollen. Das Anwärmen der Farben führt zu einem verbesserten Materialauftrag und erfolgt mittels des Durchflußerhitzers, welcher zwischen eine Förderpumpe und eine Spritz- oder Sprühvorrichtung zwischengeschaltet ist.Flow paint heaters are usually used in paint spraying devices to preheat the paints which are subsequently to be applied with a spraying or spraying device. The heating of the colors leads to an improved material application and is carried out by means of the flow heater, which is interposed between a feed pump and a spraying or spraying device.
Aus dem Stand der Technik ist ein Durchflußerhitzer bekannt, bei welchem das Material durch Durchlaßkanäle geleitet wird, welche in einem Gehäuse ausgebildet sind, das von Heizstäben einer Heizvorrichtung erwärmt wird. Dabei erweist es sich als nachteilig, daß die Durchlaßkanäle bei einem Eintrocknen des Materials schlecht oder nur unter erheblichem Aufwand gereinigt werden können und daß, auch bedingt durch ein teilweises Erstarren des Materials in den Durchlaßkanälen, die Durchsatzleistung des Durchflußerhitzers vielfach nicht den Anforderungen genügt.A flow heater is known from the prior art, in which the material is passed through passage channels which are formed in a housing which is heated by heating elements of a heating device. It proves to be disadvantageous that the passage channels can be cleaned poorly or only with considerable effort when the material dries up and that the throughput of the flow heater often does not meet the requirements, also due to partial solidification of the material in the passage channels.
Die US-PS 18 33 066 zeigt eine Heizhaube, welche über ein Rohr, welches von einer Flüssigkeit durchströmt ist, gestülpt werden kann. Die Heizhaube umgreift einen Teil des Rohres und bewirkt durch Strahlung und Konvektion eine Erwärmung des Rohres und somit eine Erwärmung der durch das Rohr strömenden Flüssigkeit. Der Wirkungsgrad einer derartigen Vorrichtung ist ausgesprochen gering, insbesondere deshalb, weil nur ein Teil des Rohres umgriffen wird und weil der Wärmeübergang im wesentlichen nur durch Strahlung und Konvektion erfolgt.The US-PS 18 33 066 shows a heating hood, which can be put over a tube through which a liquid flows. The heating hood encompasses a part of the tube and heats the tube by radiation and convection and thus heats the liquid flowing through the tube. The efficiency of such a device is extremely low, in particular because only part of the tube is encompassed and because the heat transfer takes place essentially only by radiation and convection.
Aus der US-PS 35 51 641 ist eine Vorrichtung zum Wärmen von Blut- oder Blutplasma vorbekannt. Bei dieser wird ein Kunststoffschlauch um ein Heizgerät gelegt. Das langsam durch den Schlauch strömende Blut erwärmt sich somit durch die von dem Heizgerät abgegebene Wärme. Auch hierbei liegt der Schlauch nur lose auf dem Heizgerät auf, so daß die Wärmeübertragung von der Wandung des Heizgerätes größtenteils durch Strahlung und Konvektion erfolgt. Auch hierbei lassen sich die Wärmeübertragungswerte nicht oder nur schlecht bestimmen, so daß der Wirkungsgrad der Heizeinrichtung und das Maß der Erwärmung des Blutes nicht exakt vorbestimmbar sind. Vielmehr hängt die Erwärmung des Blutes davon ab, wie die einzelnen Windungen der Schlauchspirale auf das Heizgerät aufgelegt sind. Ein weiterer Nachteil dieser Vorrichtung besteht darin, daß bereits eine geringfügige Erhöhung des Drucks in den Schläuchen dazu führt, daß diese sich entsprechend ausdehnen und ihre Lage verändern, so daß die gesamte Form der Schlauchspirale geändert wird. Für Farbspritzgeräte sind derartige Durchflußerhitzer nicht zu verwenden, da diese infolge ihrer Konstruktion nicht geeignet sind, die bis über 350 bar reichenden Betriebsdrucke auszuhalten. Selbst wenn man die Kunststoffschläuche durch Metalleitungen ersetzen würde, erhielte man infolge der Dehnungen der Drahtspirale nur einen sehr schlechten Wärmeübergang und damit einen geringen Wirkungsgrad, so daß die benötigten Farbmengen von bis über 5 l/min nicht auf die erforderliche konstante Spritztemperatur gebracht werden können.From US-PS 35 51 641 a device for heating blood or blood plasma is previously known. In this, a plastic hose is placed around a heater. The blood slowly flowing through the tube thus heats up due to the heat emitted by the heater. Here, too, the hose lies only loosely on the heater, so that the heat transfer from the wall of the heater largely takes place by radiation and convection. Here, too, the heat transfer values cannot be determined or can only be determined poorly that the efficiency of the heating device and the degree of heating of the blood cannot be exactly predetermined. Rather, the heating of the blood depends on how the individual turns of the hose spiral are placed on the heater. Another disadvantage of this device is that even a slight increase in the pressure in the hoses causes them to expand and change their position accordingly, so that the entire shape of the hose spiral is changed. Flow heaters of this type are not to be used for paint spraying devices, because their design means that they are not suitable for withstanding the operating pressures of up to 350 bar. Even if you replaced the plastic hoses with metal lines, you would only get a very poor heat transfer and therefore a low efficiency due to the expansion of the wire spiral, so that the required paint quantities of up to over 5 l / min could not be brought to the required constant spray temperature.
Der Erfindung liegt die Aufgabe zugrunde, einen Durchflußerhitzer für ein Farbspritzgerät der eingangs genannten Art zu schaffen, welcher bei einfachem Aufbau und kostengünstiger Herstellbarkeit einen hohen volumenmäßigen Materialdurchsatz ermöglicht, eine sichere und reproduzierbare Erwärmung der Farbe gewährleistet und bei einem Eintrocknen der Farbe kostengünstig instandzusetzen bzw. zu reinigen ist.The invention has for its object to provide a flow heater for a paint spraying device of the type mentioned, which allows a high volume material throughput with a simple structure and inexpensive to manufacture, ensures safe and reproducible heating of the paint and inexpensive to repair when the paint dries or is to be cleaned.
Die Aufgabe wird mit den Merkmalen des Anspruches 1 gelöst. Der erfindungsgemäße Durchflußerhitzer zeichnet sich durch eine Reihe erheblicher Vorteile aus. Durch die Unterteilung in ein erstes und zweites Bauelement ist es möglich, die Heizungsvorrichtung von dem mit dem Durchlaßkanal versehenen Bauelement zu trennen, so daß letzteres gereinigt werden kann, ohne daß die kostspielige und ungeschützte Heizungsvorrichtung in Mitleidenschaft gezogen wird. Beispielsweise ist es möglich,das erste, mit dem Durchlaßkanal versehene Bauelement getrennt vom Hauptbauelement in ein Reinigungsbad zu legen oder durch eine Ultraschallbeaufschlagung von anhaftenden Materialresten zu befreien. Ein weiterer Vorteil des erfindungsgemäßen Durchflußerhitzers ist dadurch gegeben, daß das erste Bauelement in einfacher Weise ausgetauscht werden kann, beispielsweise bei einem Farbwechsel oder bei einem Anwendungsfall, bei welchem der Volumendurchsatz der Farbe verändert werden soll. Dabei erweist es sich als besonders vorteilhaft, daß das zweite, mit der Heizungsvorrichtung versehene Hauptbauelement nur einmal benötigt wird und für verschiedene erste Bauelemente verwendbar ist. Durch diese Maßnahme ergibt sich eine erhebliche Kostenreduzierung, da, im Vergleich zu dem bekannten Durchflußerhitzer für die verschiedensten Anwendungsfälle und/oder für Wartungszwecke lediglich mehrere erste Bauelemente benötigt werden. Ein weiterer Vorteil des erfindungsgemäßen Durchflußerhitzers ist auch dadurch gegeben, daß das erste Bauelement einfach und robust aufgebaut sein kann, während empfindlichere Teile, wie etwa die exgeschützte Regeleinrichtung und die Heizstäbe in dem nur einmal benötigten Hauptbauelement vorgesehen sind, welches insbesondere in der Reinigungsphase des Durchlaßkanals von dem ersten Bauelement getrennt und damit keinen Belastungen unterworfen wird.The object is achieved with the features of claim 1. The flow heater according to the invention is characterized by a number of considerable advantages. By dividing it into a first and a second component it is possible to separate the heating device from the component provided with the passage channel, so that the latter can be cleaned without the expensive and unprotected heating device being affected. For example, it is possible to place the first component provided with the passage channel separately from the main component in a cleaning bath or to remove adhering material residues by ultrasound exposure. A further advantage of the flow heater according to the invention is given in that the first component can be replaced in a simple manner, for example in the case of a color change or in an application in which the volume throughput of the color is to be changed. It proves to be particularly advantageous that the second main component provided with the heating device is only required once and can be used for various first components. This measure results in a considerable cost reduction since, in comparison to the known flow heater for the most varied of applications and / or for maintenance purposes, only a few first components are required. Another advantage of the flow heater according to the invention is given by the fact that the first component can be constructed simply and robustly, while more sensitive parts, such as the ex-protected control device and the heating elements, are provided in the main component which is required only once, which is particularly important in the cleaning phase of the flow channel is separated from the first component and is therefore not subjected to any loads.
Besonders vorteilhaft ist, daß das erste Bauelement eine konische Ausnehmung aufweist, in welche passend ein konischer Ansatz des zweiten Bauelements einsetzbar ist. Durch diese Ausgestaltung wird ein besonders guter Wärmeubergang von dem zweiten Bauelement auf das erste Bauelement sichergestellt, da, bedingt durch die Konizität, die beiden Bauelemente eine spaltfreie, große Berührungsfläche aufweisen. Durch die konische Ausgestaltung ist weiterhin ein sicherer Sitz gewährleistet, was sich insbesondere dann als vorteilhaft erweist, wenn der Durchflußerhitzer unter rauhen Einsatzbedingungen von ungeschultem Personal verwendet wird.It is particularly advantageous that the first component has a conical recess into which a conical extension of the second component can be inserted. This configuration ensures particularly good heat transfer from the second component to the first component, since, owing to the taper, the two components have a large, gap-free contact area. The conical design also ensures a secure fit, which proves to be particularly advantageous when the flow heater is used by untrained personnel under harsh operating conditions.
Eine Weiterbildung der Erfindung besteht dann, daß der konische Ansatz eine Regelungsvorrichtung umfaßt. Bei dieser Ausgestaltung wird nur der Bereich des zweiten Bauelements erwärmt, welcher sich in direktem Kontakt mit dem ersten Bauelement befindet. Dies führt zu einer erheblichen Steigerung des Wirkungsgrades, da eine unnötige Erwärmung nicht benötigter Bauelemente vermieden wird. Da die Regelungsvorrichtung direkt in dem zu erwärmenden Bereich angeordnet ist, ist sichergestellt, daß das durchlaufende Material stets auf die vorgewählte Temperatur gleichmäßig vorgewärmt wird.A further development of the invention is that the conical approach comprises a control device. In this embodiment, only the area of the second component that is in direct contact with the first component is heated. This leads to a significant increase in efficiency, since unnecessary heating of unnecessary components is avoided. Since the control device is arranged directly in the area to be heated, it is ensured that the material passing through is always preheated evenly to the preselected temperature.
Eine weitere vorteilhafte Ausgestaltung des erfindungsgemäßen Durchflußerhitzers kann auch dadurch gegeben sein, daß mehrere, zueinander parallel angeordnete Durchlaßkanäle vorgesehen sind, welche zusätzlich jeweils mit einem gemeinsamen Materialeinlaß und einem Materialauslaß in Verbindung stehen können. An dieser Ausgestaltung erweist es sich als vorteilhaft, daß bei einem Verstopfen oder Zusetzen eines der Durchlaßkanäle nicht sofort der gesamte Durchflußerhitzer funktionsfähig ist. Weiterhin kann bei dieser Ausgestaltung der Material-Volumendurchsatz gesteigert werden.A further advantageous embodiment of the flow heater according to the invention can also be given by the fact that a plurality of passage channels arranged parallel to one another are provided, which can additionally be connected to a common material inlet and a material outlet. In this embodiment, it proves to be advantageous that if one of the flow channels becomes blocked or clogged, the entire flow heater is not immediately functional. Furthermore, the material volume throughput can be increased in this embodiment.
Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels in Verbindung mit der Zeichnung beschrieben. Dabei zeigt:The invention is described below using an exemplary embodiment described in connection with the drawing. It shows:
Figur 1 eine Seitenansicht, teils im Schnitt, eines Ausführungsbeispiels des erfindungsgemäßen Durchflußerhitzers des Farbspritzgerätes.Figure 1 is a side view, partly in section, of an embodiment of the flow heater of the paint sprayer according to the invention.
Der Durchflußerhitzer umfaßt ein erstes Bauelement 2, welches mit wendelförmigen Durchlaßkanälen 1 versehen ist, sowie ein zweites Hauptbauelement 3, welches eine Heizungsvorrichtung 4 umfaßt.The flow heater comprises a first component 2, which is provided with helical passage channels 1, and a second
Die Heizungsvorrichtung 4 des zweiten Bauelements 3 ist in Form mehrerer Heizstäbe ausgebildet, die in einem konischen Ansatz 6 angeordnet sind. Die Heizstäbe sind in üblicher Weise ausgebildet und stehen mit einer im einzelnen nicht dargestellten Regelungseinrichtung und einem Überhitzungsschutz in Verbindung, welche wiederum mit einem Stromanschluß 10 verbunden ist. Das zweite Bauelement 3 umfaßt weiterhin einen nur schematisch dargestellten Regelschalter 11.The heating device 4 of the
Das erste Bauelement 2 ist im wesentlichen napfförmig ausgebildet und weist eine konische Ausnehmung 5 auf, welche passend zu dem konischen Ansatz 6 des zweiten Hauptbauelements 3 ausgebildet ist. Bedingt durch die napfartige Ausgestaltung weist das erste Bauelement 2 eine Wandung 7 auf, in welcher wendelförmige Durchlaßkanäle 1 ausgebildet sind. Der Durchlaßkanal 1 ist mit einem Materialfluß 8 bzw. einem Materialfluß 9 verbunden. Bei der Parallelschaltung der Durchlaßkanäle 1 ist eine Durchströmung auch dann möglich, wenn einer der Durchlaßkanäle 1 verstopft sein sollte.The first component 2 is essentially cup-shaped and has a
Um das erste und das zweite Bauelement in dem in Figur 1 gezeigten betriebsbereiten Zustand zusammenzuhalten, sind Schrauben 12 vorgesehen, welche sich durch eine Ausnehmung im Bodenbereich des ersten Bauelements 2 erstrecken und in eine Gewindeausnehmung des konischen Ansatzes 6 einschraubbar sind. Eine Trennung des ersten und des zweiten Bauelements kann dadurch erleichtert werden, daß die Schrauben in Gewindebohrungen 13 des Bodens des ersten Bauelements 2 eingeschraubt werden, welche in Figur 1 nur strichpunktiert dargestellt und mit der Bezugsziffer 14 versehen sind. Zur Vereinfachung des Aufbaus des Durchflußerhitzers können die Schrauben 12 nach ihrer Entnahme in die Gewindebohrung 13 eingeschraubt und zum Lösen der beiden Bauelemente verwendet werden.In order to hold the first and the second component together in the operational state shown in FIG. 1,
Das erste Bauelement 2 kann bezüglich seiner Außenabmessungen zylindrisch ausgebildet sein, wobei die Durchlaßkanäle 1 in Form von Ringkanälen ausgebildet sein können, es ist jedoch auch möglich, das erste Bauelement 2 hinsichtlich seiner Außenabmessungen polygonal, beispielsweise quadratisch, auszugestalten.The first component 2 can be cylindrical in terms of its outer dimensions, the passage channels 1 can be in the form of ring channels, but it is also possible to design the first component 2 polygonally, for example square, in terms of its outer dimensions.
Der erfindungsgemäße Durchflußerhitter zeichnet sich somit dadurch aus, daß durch die innige Verbindung zwischen dem abnehmbaren Teil und der Heizeinrichtung besonders gute Wärmeübergangswerte sichergestellt sind, so daß die unter hohem Druck und mit hoher Geschwindigkeit durch den Durchflußerhitter gepreßte Farbe in kontrollierbarer Weise erwärmt oder vorgeheizt werden kann. Diese kontrollierte Erwärmung oder Vorheizung ist bei den aus dem Stand der Technik bekannten Geräten nicht möglich bzw. wird durch den Aufbau der Geräte erheblich erschwert. Die innige Verbindung zwischen dem abnehmbaren Teil und der Heizeinrichtung schafft im zusammenmontierten Zustand Verhältnisse, wie sie bei einem einstückigen Gerät gegeben sind, erlaubt jedoch gleichzeitig, bedingt durch die lösbare Ausgestaltung, eine Separierung zu Zwecken der Reinigung, des Austausches oder ähnlichem.The flow heater according to the invention is thus characterized in that particularly good heat transfer values are ensured by the intimate connection between the removable part and the heating device, so that the paint pressed under high pressure and at high speed by the flow heater can be heated or preheated in a controllable manner . This controlled heating or preheating is not possible in the devices known from the prior art or is made considerably more difficult by the construction of the devices. The intimate connection between the detachable part and the heating device creates conditions in the assembled state, as is the case with a one-piece device, but at the same time, due to the detachable design, allows separation for cleaning, replacement or the like.
Es ist möglich, die Dimensionierung des ersten und zweiten Bauelements in weitem Bereich zu variieren, z.B., eine veränderte Anzahl von Durchlaßkanälen vorzusehen oder die Durchlaßkanäle mit anderen Querschnittsverhältnissen auszubilden.It is possible to vary the dimensioning of the first and second component in a wide range, for example a different one To provide number of passages or to design the passages with different cross-sectional ratios.
Claims (4)
- A flow heater for heating highly-pressurised paint for a paint spraying device, wherein an admission port (1) for the paint is arranged in the wall (7) of a first, cup-shaped structural element (2) which has a tapered recess (5) into which a tapered projection (6) - provided with a heating arrangement (4) - of a second structural element (3) can be fitted, and wherein both structural elements (2, 3) are detachably connected to each other in a planar manner.
- A flow heater according to claim 1, characterised in that the tapered projection (6) comprises a regulating device.
- A flow heater according to claim 1 or 2, characterised in that several admission ports (1) arranged parallel to each other are provided.
- A flow heater according to claim 3, characterised in that the admission ports (1) are each connected to a common material inlet (8) and a material outlet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT89905626T ATE79942T1 (en) | 1988-05-13 | 1989-05-11 | MATERIAL FLOW HEATER. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3816335 | 1988-05-13 | ||
| DE3816335A DE3816335A1 (en) | 1988-05-13 | 1988-05-13 | MATERIAL FLOW HEATER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0372040A1 EP0372040A1 (en) | 1990-06-13 |
| EP0372040B1 true EP0372040B1 (en) | 1992-08-26 |
Family
ID=6354294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89905626A Expired - Lifetime EP0372040B1 (en) | 1988-05-13 | 1989-05-11 | Flow-heater for materials |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0372040B1 (en) |
| JP (1) | JP3016804B2 (en) |
| KR (1) | KR0122591B1 (en) |
| CA (1) | CA1310051C (en) |
| DE (2) | DE3816335A1 (en) |
| WO (1) | WO1989011069A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4301114C2 (en) * | 1993-01-18 | 1995-12-07 | Hilzinger Gmbh & Co Wilhelm | Method and device for discharging a flowable, heated medium from a storage container |
| DE102009038762B4 (en) * | 2009-08-27 | 2011-09-01 | Wiwa Wilhelm Wagner Gmbh & Co Kg | Heat exchanger |
| JP2011144976A (en) * | 2010-01-13 | 2011-07-28 | Sanden Corp | Heating device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1833066A (en) | 1931-03-04 | 1931-11-24 | Walter J Bradfish | Electric heater |
| US3551641A (en) | 1968-05-03 | 1970-12-29 | Andrew Truhan | Refrigerated intravenous liquid warming device |
| JPS5242344B2 (en) * | 1972-02-01 | 1977-10-24 | ||
| US4465922A (en) * | 1982-08-20 | 1984-08-14 | Nordson Corporation | Electric heater for heating high solids fluid coating materials |
-
1988
- 1988-05-13 DE DE3816335A patent/DE3816335A1/en not_active Withdrawn
-
1989
- 1989-05-11 JP JP1505353A patent/JP3016804B2/en not_active Expired - Lifetime
- 1989-05-11 EP EP89905626A patent/EP0372040B1/en not_active Expired - Lifetime
- 1989-05-11 WO PCT/DE1989/000296 patent/WO1989011069A1/en active IP Right Grant
- 1989-05-11 DE DE8989905626T patent/DE58902151D1/en not_active Expired - Lifetime
- 1989-05-11 KR KR1019900700045A patent/KR0122591B1/en not_active IP Right Cessation
- 1989-05-12 CA CA000599539A patent/CA1310051C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02504306A (en) | 1990-12-06 |
| DE3816335A1 (en) | 1989-11-23 |
| EP0372040A1 (en) | 1990-06-13 |
| JP3016804B2 (en) | 2000-03-06 |
| CA1310051C (en) | 1992-11-10 |
| WO1989011069A1 (en) | 1989-11-16 |
| KR900702306A (en) | 1990-12-06 |
| DE58902151D1 (en) | 1992-10-01 |
| KR0122591B1 (en) | 1997-11-13 |
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