EP2566628A1 - Atomizer with a lattice mixer - Google Patents

Atomizer with a lattice mixer

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Publication number
EP2566628A1
EP2566628A1 EP11719471A EP11719471A EP2566628A1 EP 2566628 A1 EP2566628 A1 EP 2566628A1 EP 11719471 A EP11719471 A EP 11719471A EP 11719471 A EP11719471 A EP 11719471A EP 2566628 A1 EP2566628 A1 EP 2566628A1
Authority
EP
European Patent Office
Prior art keywords
mixer
atomizer
mixing elements
paint
tube
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.)
Granted
Application number
EP11719471A
Other languages
German (de)
French (fr)
Other versions
EP2566628B1 (en
EP2566628B2 (en
Inventor
Bernhard Seiz
Frank Herre
Michael Baumann
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.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Duerr Systems AG filed Critical Duerr Systems AG
Priority to PL11719471T priority Critical patent/PL2566628T5/en
Publication of EP2566628A1 publication Critical patent/EP2566628A1/en
Publication of EP2566628B1 publication Critical patent/EP2566628B1/en
Application granted granted Critical
Publication of EP2566628B2 publication Critical patent/EP2566628B2/en
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Links

Classifications

    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/421—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
    • B01F25/423—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path by means of elements placed in the receptacle for moving or guiding the components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4316—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod
    • B01F25/43161—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod composed of consecutive sections of flat pieces of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1418—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces

Definitions

  • the invention relates to an atomizer, in particular a rotary atomizer, for the application of a multi-component coating agent.
  • Rotary atomizers are usually used as application devices in modern paint shops for painting automotive body components, some of which can also apply multicomponent coatings consisting of a plurality of laminating components, such as a master paint and a hardener. It is important here that the various components of the multicomponent paint in the atomizer are mixed together as well as possible.
  • the conventional rotary atomizers static Wen delmischer, which are also known as Kenics ® mixer. These spiral mixers have numerous spiral-shaped ones
  • the invention is therefore based on the object to provide a correspondingly improved atomizer with a structurally integrated mixer.
  • the invention includes the general technical teaching to use a different mixer type, namely a so-called lattice mixer, which has numerous mixing elements which are arranged interlaced in a grid-like manner.
  • lattice mixers are known, for example, from US 2004/0114461 A1, so that the content of this document is attributable to the present description with regard to the construction and the mode of operation of a lattice mixer in its entirety.
  • a common feature of the novel mixer according to the invention with the conventional spiral mixer is that it is static mixers in both cases. This means that the mixer itself has no moving parts, since the mixture is caused by the flow movement of the coating agent components to be mixed together.
  • the new lattice mixer according to the invention differs from the conventional spiral mixer by the arrangement and design of the individual mixing elements.
  • the helix mixer conventionally used comprises helical mixing elements which divert the coating medium flow in a spiral manner, wherein the mixing elements adjacent in the direction of flow each have opposite directions of deflection, whereby the mixture is effected.
  • the lattice mixer used according to the invention preferably has elongate, straight, sharp-edged and rod-shaped mixing elements which consist of plastic and each have a substantially rectangular cross-section.
  • these mixing elements each cause turbulences which lead to an effective mixing of the coating agent components to be mixed with one another.
  • the individual mixing elements are arranged in a grid-like manner in one another.
  • a plurality of rod-shaped mixing elements are in each case arranged together in one plane and thus form a grid, wherein a plurality of such lattices of a plurality of mixing elements are arranged interlocked.
  • the individual mixing elements preferably have a certain angle of incidence relative to the flow direction. This means that the individual Mixing elements are not aligned parallel to the flow direction, since this would only lead to a low mixing effect.
  • the angle of attack of the mixing elements with respect to the flow direction is greater than 20 °, 30 ° or 40 ° and / or less than 70 °, 60 ° or 50 °. In the preferred
  • the angle of attack is substantially the same for all mixing elements. However, there is also the alternative possibility that the mixing elements have different angles of incidence.
  • the mixer has a plurality of sections, which are arranged one behind the other in the flow direction and are flowed through in succession.
  • the different sections may differ, for example, due to the orientation of the mixing elements.
  • the angle of attack of the mixing elements can vary relative to the flow direction between the sections.
  • the mixer has a total of more than 5, 6, 7, 8, 9, 10 or even more than 11 different sections.
  • the immediately adjacent sections of the mixer are each designed differently, for example with regard to the angle of attack or the orientation and design of the mixing elements, wherein the respective uppermost section of the mixer again has the same structure.
  • the mixer is preferably elongated in the flow direction and has a substantially cylindrical cross section, wherein the mixer is preferably arranged completely inside the atomizer. It is also important that the mixer preferably has a length in the flow direction, which is smaller than 10cm, 8cm or even 6cm. This advantageously makes it possible for the mixer to be arranged completely in the paint tube of the atomizer. The length of the mixer is therefore preferably smaller than the overall length of the paint tube of the atomizer.
  • the atomizer according to the invention has a controllable main needle valve which selectively releases or blocks the coating medium flow.
  • the atomizer therefore does not apply any coating agent, so that the valve position of the main needle valve determines whether the atomizer applies the coating agent or not.
  • the mixer is in this case arranged upstream of the main needle valve, so that the ready-mixed coating agent is present at the main needle valve.
  • the mixer is displaced as far upstream as possible to the main needle valve in order to minimize the distance between the downstream end of the mixer and the main needle valve. This is advantageous because it reduces the paint or solvent consumption during a color change or when rinsing.
  • the length of the line between the downstream end of the mixer and the main needle valve is therefore preferably shorter than 10 cm, 6 cm, 5 cm, 4 cm, 3 cm, 2 cm or even shorter than learning.
  • the advantages of the lattice mixer according to the invention in this case offer the possibility that the mixer is arranged completely in the paint tube, so that Under certain circumstances, can be dispensed with an additional mixer in the connection block of the atomizer, which was required in the conventional atomizer described above.
  • the paint tube can also form the sheath of the usually cylindrical mixer, so that can be dispensed with an additional mixing tube for sheathing the mixer.
  • the diameter of the mixer essentially corresponds to the diameter of the color tube, so that the mixer completely fills the cross section of the color tube.
  • each of the two coating systems has several components, in particular a master paint and a hardener.
  • Each of the two paint systems can then each be assigned a mixer to mix the components of the paint system with each other.
  • the mixers for the different paint systems are arranged together in the paint tube, wherein the mixers for the different paint systems are preferably adjacent to one another with respect to the flow direction. Each mixer for the different paint systems then fills only a part of the cross section of the paint tube. Moreover, the various mixers are then preferably sheathed by a mixing tube to separate the various mixers. It should also be mentioned that the mixers for the different color systems can have different mixing properties, which are adapted to the properties of the respective color system in order to achieve the best possible mixing result.
  • the mixers for the various paint systems are not arranged together in the paint tube.
  • the mixer for the one paint system can be arranged in the paint tube, while the mixer for the other color system is outside the color tube, for example, in a valve or connection block of the atomizer upstream of the paint tube.
  • the atomiser according to the invention can have a plurality of mixers, which may also be useful in general for optimizing the mixing result.
  • the invention also encompasses the novel use of a lattice mixer with a plurality of lattice-like intermeshed mixing elements for mixing a plurality of components of a coating agent in an atomizer, in particular in a rotary atomizer.
  • FIGS. 1 shows a schematic cross-sectional drawing of a rotary atomizer according to the invention with an integrated lattice mixer
  • FIG. 2 shows a perspective view of the lattice mixer from the rotary atomizer according to FIG. 1,
  • FIG. 3 a simplified diagram to clarify the
  • FIG. 1 shows a rotary atomizer 1 according to the invention, which can be used, for example, for painting motor vehicle body components, wherein the rotary atomizer 1 is of conventional construction, so that a detailed description of the structure and mode of operation of the rotary atomizer 1 can be dispensed with.
  • the rotary atomizer 1 has a color tube 2 which is fixed to a terminal block 3, wherein the color tube 2 is aligned coaxially to the axis of rotation of a bell-plate shaft 4 to supply the coating agent to be applied.
  • the invention now provides that a grate mixer 5 is arranged in the paint tube 2 in order to mix the various components (for example base lacquer and hardener) of the coating composition with one another.
  • a grate mixer 5 is arranged in the paint tube 2 in order to mix the various components (for example base lacquer and hardener) of the coating composition with one another.
  • the lattice mixer 5 has numerous elongated, rod-shaped, sharp-edged mixing elements 6, which are arranged interlaced in a grid shape, wherein the mixing elements 6 generate turbulence in the paint tube 2, resulting in a good mixing.
  • the lattice mixer consists of a total of twelve sections 7, 8, which are arranged one behind the other in the flow direction, and are flowed through in succession.
  • the different sections 7, 8 of the lattice mixer 5 differ here by the orientation of the individual mixing elements 6, as can be seen from the perspective view in FIG.
  • FIG. 3 shows a schematic diagram to clarify the structure of a rotary atomizer 9 according to the invention, which is suitable for the application of two different paint systems, wherein the first paint system consists of a first paint sprayer
  • the rotary atomizer has two main needle valves 10, 11 and in each case a lattice mixer 12, 13, wherein the two lattice mixers 12, 13 are arranged together next to one another in a paint tube 14 of the rotary atomizer 9.
  • the lattice mixer 12 mixes the first stock paint SL1 with the first hardener H1
  • the other lattice mixer 13 mixes the second stock paint SL2 with the second hardener H2.
  • the two lattice mixers 12, 13 in this case correspond in structure and function to the lattice mixer 5 according to FIGS. 1 and 2.
  • connection block 15 with integrated valves.
  • the two lattice mixers 12, 13 are arranged upstream of the associated main needle valves 10, 11 at a very short distance K5cm. This is advantageous because the line section to be flushed between the lattice mixers 12, 13 and the associated main needle valves 10, 11 thereby has a low volume, so that the flushing agent losses and the lacquer losses are correspondingly small.
  • FIG. 4 shows a modification of the exemplary embodiment according to FIG. 3, so that reference is made to the above description to avoid repetition, the same reference numerals being used for corresponding details.
  • a special feature of this embodiment is the arrangement of the two lattice mixers 12, 13.
  • the lattice mixer 12 is in this embodiment also within the color tube 14, whereas the other lattice mixer 13 is integrated into the terminal block 15.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nozzles (AREA)

Abstract

The invention relates to an atomizer (1), in particular a rotation atomizer, for applying a coating agent composed of several components, with a static mixer (5) that mixes together the various components of the coating agent, wherein the mixer (5) has a plurality of fixed mixing elements (6) and is structurally integrated into the atomizer (1). It is proposed that the mixer (5) be a lattice mixer in which the mixing elements (6) are arranged interlaced in a lattice shape.

Description

BESCHREIBUNG Zerstäuber mit einem Gittermischer  DESCRIPTION Atomizer with a lattice mixer
Die Erfindung betrifft einen Zerstäuber, insbesondere einen Rotationszerstäuber, zur Applikation eines aus mehreren Komponenten bestehenden Beschichtungsmittels . The invention relates to an atomizer, in particular a rotary atomizer, for the application of a multi-component coating agent.
In modernen Lackieranlagen zur Lackierung von Kraftfahrzeug- karosseriebauteilen werden als Applikationsgerät üblicherweise Rotationszerstäuber eingesetzt, die teilweise auch Mehrkomponentenlacke applizieren können, die aus mehreren Be- Schichtungsmittelkomponenten bestehen, wie beispielsweise einem Stammlack und einem Härter. Wichtig ist hierbei, dass die verschiedenen Komponenten des Mehrkomponentenlacks in dem Zerstäuber möglichst gut miteinander vermischt werden. Hierzu weisen die herkömmlichen Rotationszerstäuber statische Wen- delmischer auf, die auch als Kenics®-Mischer bezeichnet werden. Diese Wendelmischer haben zahlreiche spiralförmige Rotary atomizers are usually used as application devices in modern paint shops for painting automotive body components, some of which can also apply multicomponent coatings consisting of a plurality of laminating components, such as a master paint and a hardener. It is important here that the various components of the multicomponent paint in the atomizer are mixed together as well as possible. For this purpose, the conventional rotary atomizers static Wen delmischer, which are also known as Kenics ® mixer. These spiral mixers have numerous spiral-shaped ones
Mischelemente, die den Beschichtungsmittelstrom radial nach außen richten und dann wieder zur Mitte zurück führen. Üblicherweise werden hierbei zwei getrennte Wendelmischer einge- setzt, wobei der erste Wendelmischer in dem Farbrohr des Rotationszerstäubers angeordnet ist, während sich der zweite Wendelmischer außerhalb des Farbrohrs im Anschlussblock des Rotationszerstäubers befindet. Nachteilig an dieser herkömmlichen Bauweise ist die Tatsache, dass eine relativ große Baulänge des Mischers erforderlich ist, so dass bei einem Farbwechsel bzw. bei Spülvorgängen große Verluste an Lack bzw. Spülmittel auftreten. Weiterhin offenbart DE 82 31 663 Ul ein Farbführungsrohr in einem Zerstäuber, wobei in dem Farbführungsrohr ein statischer Mischer angeordnet ist. Auch dieser bekannte Mischer erfordert jedoch eine relativ große Baulänge. Mixing elements that direct the coating agent flow radially outward and then lead back to the center. Usually, two separate spiral mixers are used in this case, the first spiral mixer being arranged in the color tube of the rotary atomizer, while the second spiral mixer is located outside the color tube in the connection block of the rotary atomizer. A disadvantage of this conventional construction is the fact that a relatively large length of the mixer is required, so that occur in a color change or rinsing large losses of paint or detergent. Furthermore, DE 82 31 663 U1 discloses an ink guide tube in an atomizer, wherein a static mixer is arranged in the ink guide tube. However, this known mixer requires a relatively large length.
Ferner ist zum Stand der Technik hinzuweisen auf DE 30 40 136 AI und US 4 614 440. Furthermore, reference is made to DE 30 40 136 A1 and US Pat. No. 4,614,440 to the state of the art.
Schließlich offenbart US 2004/0114461 AI einen sogenannten Gittermischer, wobei es sich um einen statischen Mischer handelt, der zum Mischen von hochviskosen Flüssigkeiten verwendet wird, beispielsweise in Spritzgussmaschinen. Bisher wurden derartige Gittermischer jedoch nicht in Zerstäubern ein¬ gesetzt, zumal man davon ausging, dass solche Gittermischer nur zum Mischen von hochviskosen Flüssigkeiten geeignet sind. Finally, US 2004/0114461 Al discloses a so-called lattice mixer, which is a static mixer used for mixing high viscosity liquids, for example in injection molding machines. So far, however, such lattice mixers have not been set in atomizers ¬ , especially since it was assumed that such lattice mixers are only suitable for mixing of highly viscous liquids.
Der Erfindung liegt deshalb die Aufgabe zugrunde, einen entsprechend verbesserten Zerstäuber mit einem baulich integrierten Mischer zu schaffen. The invention is therefore based on the object to provide a correspondingly improved atomizer with a structurally integrated mixer.
Diese Aufgabe wird durch einen erfindungsgemäßen Zerstäuber gemäß dem Hauptanspruch gelöst . This object is achieved by an atomizer according to the invention according to the main claim.
Die Erfindung umfasst die allgemeine technische Lehre, einen anderen Mischertyp zu verwenden, nämlich einen sogenannten Gittermischer, der zahlreiche Mischelemente aufweist, die gitterförmig ineinander verschränkt angeordnet sind. Derartige Gittermischer sind beispielsweise aus US 2004/0114461 AI bekannt, so dass der Inhalt dieser Druckschrift der vorlie- genden Beschreibung hinsichtlich des Aufbaus und der Funktionsweise eines Gittermischers in vollem Umfang zuzurechnen ist . Eine Gemeinsamkeit des erfindungsgemäßen neuen Mischers mit dem herkömmlichen Wendelmischer besteht darin, dass es sich in beiden Fällen um statische Mischer handelt. Dies bedeutet, dass der Mischer selbst keine beweglichen Teile aufweist, da die Mischung durch die Strömungsbewegung der miteinander zu mischenden Beschichtungsmittelkomponenten bewirkt wird. The invention includes the general technical teaching to use a different mixer type, namely a so-called lattice mixer, which has numerous mixing elements which are arranged interlaced in a grid-like manner. Such lattice mixers are known, for example, from US 2004/0114461 A1, so that the content of this document is attributable to the present description with regard to the construction and the mode of operation of a lattice mixer in its entirety. A common feature of the novel mixer according to the invention with the conventional spiral mixer is that it is static mixers in both cases. This means that the mixer itself has no moving parts, since the mixture is caused by the flow movement of the coating agent components to be mixed together.
Der erfindungsgemäße neue Gittermischer unterscheidet sich dagegen von dem herkömmlichen Wendelmischer durch die Anord- nung und Gestaltung der einzelnen Mischelemente. So weist der herkömmlicherweise verwendete Wendelmischer spiralförmige Mischelemente auf, die den Beschichtungsmittelstrom spiralförmig umleiten, wobei die in Strömungsrichtung benachbarten Mischelemente jeweils entgegengesetzte Umlenkrichtungen auf- weisen, wodurch die Mischung bewirkt wird. Der erfindungsgemäß verwendete Gittermischer weist dagegen vorzugsweise langgestreckte, gerade, scharfkantige und stabförmige Mischelemente auf, die aus Kunststoff bestehen und jeweils einen im Wesentlichen rechteckigen Querschnitt aufweisen. Diese Misch- elemente bewirken also jeweils Turbulenzen, die zu einer effektiven Durchmischung der miteinander zu mischenden Beschichtungsmittelkomponenten führen . In contrast, the new lattice mixer according to the invention differs from the conventional spiral mixer by the arrangement and design of the individual mixing elements. Thus, the helix mixer conventionally used comprises helical mixing elements which divert the coating medium flow in a spiral manner, wherein the mixing elements adjacent in the direction of flow each have opposite directions of deflection, whereby the mixture is effected. By contrast, the lattice mixer used according to the invention preferably has elongate, straight, sharp-edged and rod-shaped mixing elements which consist of plastic and each have a substantially rectangular cross-section. Thus, these mixing elements each cause turbulences which lead to an effective mixing of the coating agent components to be mixed with one another.
Die einzelnen Mischelemente sind hierbei gitterförmig inein- ander verschränkt angeordnet. In dem bevorzugte Ausführungsbeispiel des erfindungsgemäßen Gittermischers sind jeweils mehrere stabförmige Mischelemente gemeinsam in einer Ebene angeordnet und bilden somit ein Gitter, wobei mehrere derartige Gitter aus mehreren Mischelementen ineinander ver- schränkt angeordnet sind. The individual mixing elements are arranged in a grid-like manner in one another. In the preferred embodiment of the lattice mixer according to the invention, a plurality of rod-shaped mixing elements are in each case arranged together in one plane and thus form a grid, wherein a plurality of such lattices of a plurality of mixing elements are arranged interlocked.
Weiterhin ist zu erwähnen, dass die einzelnen Mischelemente vorzugsweise einen bestimmten Anstellwinkel relativ zur Strömungsrichtung aufweisen. Dies bedeutet, dass die einzelnen Mischelemente nicht parallel zur Strömungsrichtung ausgerichtet sind, da dies nur zu einer geringen Mischwirkung führen würde. Vorzugsweise ist der Anstellwinkel der Mischelemente gegenüber der Strömungsrichtung größer als 20°, 30° oder 40° und/oder kleiner als 70°, 60° oder 50°. In dem bevorzugtenIt should also be mentioned that the individual mixing elements preferably have a certain angle of incidence relative to the flow direction. This means that the individual Mixing elements are not aligned parallel to the flow direction, since this would only lead to a low mixing effect. Preferably, the angle of attack of the mixing elements with respect to the flow direction is greater than 20 °, 30 ° or 40 ° and / or less than 70 °, 60 ° or 50 °. In the preferred
Ausführungsbeispiel ist der Anstellwinkel bei allen Mischelementen im Wesentlichen gleich. Es besteht jedoch alternativ auch die Möglichkeit, dass die Mischelemente unterschiedliche Anstellwinkel aufweisen. Embodiment, the angle of attack is substantially the same for all mixing elements. However, there is also the alternative possibility that the mixing elements have different angles of incidence.
In dem bevorzugten Ausführungsbeispiel weist der Mischer mehrere Abschnitte auf, die in Strömungsrichtung hintereinander angeordnet sind und nacheinander durchströmt werden. Die verschiedenen Abschnitte können sich beispielsweise durch die Ausrichtung der Mischelemente unterscheiden. So kann beispielsweise der Anstellwinkel der Mischelemente relativ zur Strömungsrichtung zwischen den Abschnitten schwanken. In dem bevorzugten Ausführungsbeispiel der Erfindung weist der Mischer insgesamt mehr als 5, 6, 7, 8, 9, 10 oder sogar mehr als 11 verschiedene Abschnitte auf. Hierbei besteht die Möglichkeit, dass die unmittelbar benachbarten Abschnitte des Mischers jeweils unterschiedlich ausgestaltet sind, beispielsweise hinsichtlich des Anstellwinkels oder der Ausrichtung und Gestaltung der Mischelemente, wobei der jeweils ü- bernächste Abschnitt des Mischers wieder den gleichen Aufbau aufweist . In the preferred embodiment, the mixer has a plurality of sections, which are arranged one behind the other in the flow direction and are flowed through in succession. The different sections may differ, for example, due to the orientation of the mixing elements. For example, the angle of attack of the mixing elements can vary relative to the flow direction between the sections. In the preferred embodiment of the invention, the mixer has a total of more than 5, 6, 7, 8, 9, 10 or even more than 11 different sections. In this case, there is the possibility that the immediately adjacent sections of the mixer are each designed differently, for example with regard to the angle of attack or the orientation and design of the mixing elements, wherein the respective uppermost section of the mixer again has the same structure.
Weiterhin ist zu erwähnen, dass der Mischer vorzugsweise in Strömungsrichtung langgestreckt ist und einen im Wesentlichen zylindrischen Querschnitt aufweist, wobei der Mischer vorzugsweise vollständig innerhalb des Zerstäubers angeordnet ist . Wichtig ist ferner, dass der Mischer vorzugsweise eine Baulänge in Strömungsrichtung aufweist, die kleiner ist als 10cm, 8cm oder sogar 6cm. Dies ermöglicht es vorteilhaft, dass der Mischer vollständig in dem Farbrohr des Zerstäubers angeordnet ist. Die Baulänge des Mischers ist also vorzugsweise kleiner als die Baulänge des Farbrohrs des Zerstäubers. It should also be mentioned that the mixer is preferably elongated in the flow direction and has a substantially cylindrical cross section, wherein the mixer is preferably arranged completely inside the atomizer. It is also important that the mixer preferably has a length in the flow direction, which is smaller than 10cm, 8cm or even 6cm. This advantageously makes it possible for the mixer to be arranged completely in the paint tube of the atomizer. The length of the mixer is therefore preferably smaller than the overall length of the paint tube of the atomizer.
Der erfindungsgemäße Zerstäuber weist in dem bevorzugten Ausführungsbeispiel - wie auch die herkömmlichen Zerstäuber - ein steuerbares Hauptnadelventil auf, das den Beschichtungs- mittelstrom wahlweise freigibt oder sperrt. Bei geschlossenem Hauptnadelventil appliziert der Zerstäuber also kein Beschichtungsmittel, so dass die Ventilstellung des Hauptnadelventils bestimmt, ob der Zerstäuber das Beschichtungsmittel appliziert oder nicht. Der Mischer ist hierbei stromaufwärts vor dem Hauptnadelventil angeordnet, so dass an dem Hauptnadelventil das fertig gemischte Beschichtungsmittel ansteht. Hierbei ist es vorteilhaft, wenn der Mischer möglichst weit stromaufwärts zu dem Hauptnadelventil hin verlagert wird, um den Abstand zwischen dem stromabwärts gelegenen Ende des Mischers und dem Hauptnadelventil zu minimieren. Dies ist vorteilhaft, weil dadurch der Lack- bzw. Lösemittelverbrauch bei einem Farbwechsel bzw. beim Spülen reduziert wird. Die Leitungslänge zwischen dem stromabwärts gelegenen Ende des Mi- schers und dem Hauptnadelventil ist deshalb vorzugsweise kürzer als 10cm, 6cm, 5cm, 4cm, 3cm, 2cm oder sogar kürzer als lern. In the preferred embodiment, the atomizer according to the invention, like the conventional atomizers, has a controllable main needle valve which selectively releases or blocks the coating medium flow. When the main needle valve is closed, the atomizer therefore does not apply any coating agent, so that the valve position of the main needle valve determines whether the atomizer applies the coating agent or not. The mixer is in this case arranged upstream of the main needle valve, so that the ready-mixed coating agent is present at the main needle valve. In this case, it is advantageous if the mixer is displaced as far upstream as possible to the main needle valve in order to minimize the distance between the downstream end of the mixer and the main needle valve. This is advantageous because it reduces the paint or solvent consumption during a color change or when rinsing. The length of the line between the downstream end of the mixer and the main needle valve is therefore preferably shorter than 10 cm, 6 cm, 5 cm, 4 cm, 3 cm, 2 cm or even shorter than learning.
Es wurde bereits vorstehend erwähnt, dass der erfindungsgemä- ße Zerstäuber - wie auch die herkömmlichen Zerstäuber - ein hohles Farbrohr aufweist, um das zu applizierende Beschichtungsmittel zuzuführen. Die Vorteile des erfindungsgemäßen Gittermischers bieten hierbei die Möglichkeit, dass der Mischer vollständig in dem Farbrohr angeordnet ist, so dass un- ter Umständen auf einen zusätzlichen Mischer in dem Anschlussblock des Zerstäubers verzichtet werden kann, was bei dem eingangs beschriebenen herkömmlichen Zerstäuber erforderlich war. Hierbei ist zu erwähnen, dass das Farbrohr auch die Ummantelung des üblicherweise zylindrischen Mischers bilden kann, so dass auf ein zusätzliches Mischrohr zur Ummantelung des Mischers verzichtet werden kann. Ferner ist zu erwähnen, dass der Durchmesser des Mischers in einem Ausführungsbeispiel im Wesentlichen dem Durchmesser des Farbrohrs ent- spricht, so dass der Mischer den Querschnitt des Farbrohrs vollständig ausfüllt. Es besteht jedoch im Rahmen der Erfindung auch die Möglichkeit, dass in dem Farbrohr des Zerstäubers mehrere Mischer nebeneinander angeordnet sind, was noch detailliert beschrieben wird. It has already been mentioned above that the atomiser according to the invention-like the conventional atomizers-has a hollow color tube in order to supply the coating agent to be applied. The advantages of the lattice mixer according to the invention in this case offer the possibility that the mixer is arranged completely in the paint tube, so that Under certain circumstances, can be dispensed with an additional mixer in the connection block of the atomizer, which was required in the conventional atomizer described above. It should be noted that the paint tube can also form the sheath of the usually cylindrical mixer, so that can be dispensed with an additional mixing tube for sheathing the mixer. It should also be mentioned that, in one embodiment, the diameter of the mixer essentially corresponds to the diameter of the color tube, so that the mixer completely fills the cross section of the color tube. However, it is within the scope of the invention, the possibility that several mixers are arranged side by side in the paint tube of the atomizer, which will be described in detail.
Dies ist beispielsweise dann sinnvoll, wenn der Zerstäuber zur Applizierung von verschiedenen Lacksystemen geeignet ist, wobei jedes der beiden Lacksysteme mehrere Komponenten aufweist, insbesondere einen Stammlack und einen Härter. Jedem der beiden Lacksysteme kann dann jeweils ein Mischer zugeordnet sein, um die Komponenten des Lacksystems miteinander zu mischen . This is useful, for example, if the atomizer is suitable for the application of different coating systems, wherein each of the two coating systems has several components, in particular a master paint and a hardener. Each of the two paint systems can then each be assigned a mixer to mix the components of the paint system with each other.
Hierbei besteht - wie bereits vorstehend kurz erwähnt - die Möglichkeit, dass die Mischer für die verschiedenen Lacksysteme gemeinsam in dem Farbrohr angeordnet sind, wobei sich die Mischer für die verschiedenen Lacksysteme bezüglich der Strömungsrichtung vorzugsweise nebeneinander befinden. Jeder Mischer für die verschiedenen Lacksysteme füllt hierbei dann nur einen Teil des Querschnitts des Farbrohrs auf. Darüber hinaus sind die verschiedenen Mischer dann vorzugsweise durch jeweils ein Mischrohr ummantelt, um die verschiedenen Mischer voneinander zu trennen. Ferner ist zu erwähnen, dass die Mischer für die verschiedenen Farbsysteme unterschiedliche Mischeigenschaften aufweisen können, die an die Eigenschaften des jeweiligen Farbsystems angepasst sind, um ein möglichst optimales Mischergebnis zu erzielen. Here, as already mentioned briefly above, there is the possibility that the mixers for the different paint systems are arranged together in the paint tube, wherein the mixers for the different paint systems are preferably adjacent to one another with respect to the flow direction. Each mixer for the different paint systems then fills only a part of the cross section of the paint tube. Moreover, the various mixers are then preferably sheathed by a mixing tube to separate the various mixers. It should also be mentioned that the mixers for the different color systems can have different mixing properties, which are adapted to the properties of the respective color system in order to achieve the best possible mixing result.
Alternativ besteht auch die Möglichkeit, dass die Mischer für die verschiedenen Lacksysteme nicht gemeinsam in dem Farbrohr angeordnet sind. So kann der Mischer für das eine Lacksystem in dem Farbrohr angeordnet sein, während sich der Mischer für das andere Farbsystem außerhalb des Farbrohrs befindet, beispielsweise in einem Ventil- oder Anschlussblock des Zerstäubers stromaufwärts vor dem Farbrohr. Allgemein ist zu erwähnen, dass der erfindungsgemäße Zerstäuber mehrere Mischer aufweisen kann, was auch ganz allgemein zur Optimierung des Mischergebnisses sinnvoll sein kann. Alternatively, there is also the possibility that the mixers for the various paint systems are not arranged together in the paint tube. Thus, the mixer for the one paint system can be arranged in the paint tube, while the mixer for the other color system is outside the color tube, for example, in a valve or connection block of the atomizer upstream of the paint tube. It should generally be mentioned that the atomiser according to the invention can have a plurality of mixers, which may also be useful in general for optimizing the mixing result.
Schließlich umfasst die Erfindung auch die neuartige Verwen- dung eines Gittermischers mit mehreren gitterförmig ineinander verschränkten Mischelementen zur Mischung von mehreren Komponenten eines Beschichtungsmittels in einem Zerstäuber, insbesondere in einem Rotationszerstäuber. 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 schematisierte Querschnittszeichnung eines erfindungsgemäßen Rotationszerstäubers mit einem integrierten Gittermischer, Figur 2: eine Perspektivansicht des Gittermischers aus dem Rotationszerstäuber gemäß Figur 1, Finally, the invention also encompasses the novel use of a lattice mixer with a plurality of lattice-like intermeshed mixing elements for mixing a plurality of components of a coating agent in an atomizer, in particular in a rotary atomizer. 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. 1 shows a schematic cross-sectional drawing of a rotary atomizer according to the invention with an integrated lattice mixer, FIG. 2 shows a perspective view of the lattice mixer from the rotary atomizer according to FIG. 1,
Figur 3: ein vereinfachtes Diagramm zur Verdeutlichung des FIG. 3: a simplified diagram to clarify the
Aufbaus eines Rotationszerstäubers zur Applikation von zwei verschiedenen Lacksystemen, wobei in das Farbrohr des Rotationszerstäubers zwei Mischer integriert sind, eine Abwandlung von Figur 3, wobei der eine Mischer in dem Farbrohr angeordnet ist, während sich der andere Mischer in dem Ventilblock befindet.  Structure of a rotary atomizer for the application of two different paint systems, wherein in the paint tube of the rotary atomizer two mixers are integrated, a modification of Figure 3, wherein a mixer is arranged in the paint tube, while the other mixer is in the valve block.
Figur 1 zeigt einen erfindungsgemäßen Rotationszerstäuber 1, der beispielsweise zur Lackierung von Kraftfahrzeugkarosse- riebauteilen eingesetzt werden kann, wobei der Rotationszerstäuber 1 weitgehend herkömmlich aufgebaut ist, so dass auf eine detaillierte Beschreibung des Aufbaus und der Funktionsweise des Rotationszerstäubers 1 verzichtet werden kann. Für die Beschreibung der Erfindung ist lediglich wichtig, dass der Rotationszerstäuber 1 ein Farbrohr 2 aufweist, das an einem Anschlussblock 3 befestigt ist, wobei das Farbrohr 2 koaxial zur Drehachse einer Glockentellerwelle 4 ausgerichtet ist, um das zu applizierende Beschichtungsmittel zuzuführen. FIG. 1 shows a rotary atomizer 1 according to the invention, which can be used, for example, for painting motor vehicle body components, wherein the rotary atomizer 1 is of conventional construction, so that a detailed description of the structure and mode of operation of the rotary atomizer 1 can be dispensed with. For the description of the invention is only important that the rotary atomizer 1 has a color tube 2 which is fixed to a terminal block 3, wherein the color tube 2 is aligned coaxially to the axis of rotation of a bell-plate shaft 4 to supply the coating agent to be applied.
Die Erfindung sieht nun vor, dass in dem Farbrohr 2 ein Git- termischer 5 angeordnet ist, um die verschiedenen Komponenten (z.B. Stammlack und Härter) des Beschichtungsmittels mitein- ander zu vermischen. The invention now provides that a grate mixer 5 is arranged in the paint tube 2 in order to mix the various components (for example base lacquer and hardener) of the coating composition with one another.
Der Gittermischer 5 weist zahlreiche langgestreckte, stabför- mige, scharfkantige Mischelemente 6 auf, die gitterförmig ineinander verschränkt angeordnet sind, wobei die Mischelemente 6 in dem Farbrohr 2 Turbulenzen erzeugen, was zu einer guten Durchmischung führt. The lattice mixer 5 has numerous elongated, rod-shaped, sharp-edged mixing elements 6, which are arranged interlaced in a grid shape, wherein the mixing elements 6 generate turbulence in the paint tube 2, resulting in a good mixing.
Der Gittermischer besteht hierbei aus insgesamt zwölf Ab- schnitten 7, 8, die in Strömungsrichtung hintereinander angeordnet sind, und nacheinander durchströmt werden. Die verschiedenen Abschnitte 7, 8 des Gittermischers 5 unterscheiden sich hierbei durch die Ausrichtung der einzelnen Mischelemente 6, wie aus der Perspektivdarstellung in Figur 2 ersicht- lieh ist. The lattice mixer consists of a total of twelve sections 7, 8, which are arranged one behind the other in the flow direction, and are flowed through in succession. The different sections 7, 8 of the lattice mixer 5 differ here by the orientation of the individual mixing elements 6, as can be seen from the perspective view in FIG.
Figur 3 zeigt ein schematisches Diagramm zur Verdeutlichung des Aufbaus eines erfindungsgemäßen Rotationszerstäubers 9, der zur Applikation von zwei verschiedenen Lacksystemen ge- eignet ist, wobei das erste Lacksystem aus einem ersten FIG. 3 shows a schematic diagram to clarify the structure of a rotary atomizer 9 according to the invention, which is suitable for the application of two different paint systems, wherein the first paint system consists of a first paint sprayer
Stammlack SL1 und einem ersten Härter Hl besteht, während das zweite Lacksystem aus einem zweiten Stammlack SL2 und einem zweiten Härter H2 besteht. Zur Applikation der verschiedenen Lacksysteme weist der Rotationszerstäuber zwei Hauptnadelventile 10, 11 sowie jeweils einen Gittermischer 12, 13 auf, wobei die beiden Gittermischer 12, 13 gemeinsam nebeneinander in einem Farbrohr 14 des Rotationszerstäubers 9 angeordnet sind. Der Gittermischer 12 mischt hierbei den ersten Stammlack SL1 mit dem ersten Härter Hl, während der andere Gittermischer 13 den zweiten Stammlack SL2 mit dem zweiten Härter H2 mischt.  Base lacquer SL1 and a first hardener Hl, while the second lacquer system consists of a second parent lacquer SL2 and a second hardener H2. For application of the various paint systems, the rotary atomizer has two main needle valves 10, 11 and in each case a lattice mixer 12, 13, wherein the two lattice mixers 12, 13 are arranged together next to one another in a paint tube 14 of the rotary atomizer 9. In this case, the lattice mixer 12 mixes the first stock paint SL1 with the first hardener H1, while the other lattice mixer 13 mixes the second stock paint SL2 with the second hardener H2.
Die beiden Gittermischer 12, 13 entsprechen hierbei in Aufbau und Funktion dem Gittermischer 5 gemäß den Figuren 1 und 2. The two lattice mixers 12, 13 in this case correspond in structure and function to the lattice mixer 5 according to FIGS. 1 and 2.
Darüber hinaus weist der Rotationszerstäuber 9 auch in diesem Ausführungsbeispiel einen Anschlussblock 15 mit integrierten Ventilen auf. Aus der Zeichnung ist weiterhin ersichtlich, dass die beiden Gittermischer 12, 13 in einem sehr kurzen Abstand K5cm stromaufwärts vor den zugehörigen Hauptnadelventilen 10, 11 angeordnet sind. Dies ist vorteilhaft, weil der zu spülende Leitungsabschnitt zwischen den Gittermischern 12, 13 und den zugehörigen Hauptnadelventilen 10, 11 dadurch ein geringes Volumen aufweist, so dass auch die Spülmittelverluste bzw. die Lackverluste entsprechend klein sind. In addition, the rotary atomizer 9 also in this embodiment, a connection block 15 with integrated valves. It can also be seen from the drawing that the two lattice mixers 12, 13 are arranged upstream of the associated main needle valves 10, 11 at a very short distance K5cm. This is advantageous because the line section to be flushed between the lattice mixers 12, 13 and the associated main needle valves 10, 11 thereby has a low volume, so that the flushing agent losses and the lacquer losses are correspondingly small.
Figur 4 zeigt eine Abwandlung des Ausführungsbeispiels gemäß Figur 3, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird, wobei für entsprechende Einzelheiten dieselben Bezugszeichen verwendet werden. FIG. 4 shows a modification of the exemplary embodiment according to FIG. 3, so that reference is made to the above description to avoid repetition, the same reference numerals being used for corresponding details.
Eine Besonderheit dieses Ausführungsbeispiels besteht in der Anordnung der beiden Gittermischer 12, 13. So befindet sich der Gittermischer 12 in diesem Ausführungsbeispiel ebenfalls innerhalb des Farbrohrs 14, wohingegen der andere Gittermi- scher 13 in den Anschlussblock 15 integriert ist. A special feature of this embodiment is the arrangement of the two lattice mixers 12, 13. Thus, the lattice mixer 12 is in this embodiment also within the color tube 14, whereas the other lattice mixer 13 is integrated into the terminal block 15.
Die Erfindung ist nicht auf die vorstehend beschriebenen bevorzugten Ausführungsbeispiele beschränkt. Vielmehr ist eine Vielzahl von Varianten und Abwandlungen möglich, die eben- falls von dem Erfindungsgedanken Gebrauch machen und deshalb in den Schutzbereich fallen. Weiterhin ist zu erwähnen, dass die Erfindung auch Schutz beansprucht für den Gegenstand der Unteransprüche unabhängig von den Merkmalen der vorangehenden Ansprüche . Bezugs zeichenliste : The invention is not limited to the preferred embodiments described above. Rather, a multiplicity of variants and modifications is possible, which likewise make use of the concept of the invention and therefore fall within the scope of protection. It should also be mentioned that the invention also claims protection for the subject matter of the dependent claims independently of the features of the preceding claims. Reference sign list:
1 Rotations Zerstäuber 1 rotary atomizer
2 Farbrohr  2 color tube
3 Anschlussblock  3 terminal block
4 Glockentellerwelle  4 bell-plate shaft
5 Gittermischer  5 lattice mixers
6 Mischelemente  6 mixing elements
7 Abschnitt des Gittermischers  7 section of the lattice mixer
8 Abschnitt des Gittermischers  8 section of the lattice mixer
9 Rotations Zerstäuber  9 rotary atomizers
10 Hauptnadelventil  10 main needle valve
11 Hauptnadelventil  11 main needle valve
12 Gittermischer  12 lattice mixers
13 Gittermischer  13 lattice mixers
14 Farbrohr  14 color tube
15 Anschlussblock  15 terminal block
Hl Erster Härter  Hl first hardener
H2 Zweiter Härter  H2 second hardener
1 Leitungslänge zwischen Gittermischer und Hauptnadelventil 1 cable length between lattice mixer and main needle valve
SL1 Erster Stammlack SL1 First base coat
SL2 Zweiter Stammlack  SL2 second master paint

Claims

ANSPRÜCHE
1. Zerstäuber (1; 9), insbesondere Rotationszerstäuber, zur Applikation eines aus mehreren Komponenten bestehenden Beschichtungsmittels , mit 1. atomizer (1; 9), in particular rotary atomizer, for the application of a multi-component coating agent, with
a) einem statischen Mischer (5; 12, 13), der die verschiedenen Komponenten (SL1, Hl, SL2, H2) des Beschichtungs¬ mittels miteinander mischt, wobei der Mischer (5; 12, 13) mehrere feststehende Mischelemente (6) aufweist und baulich in den Zerstäuber (1; 9) integriert ist, a) a static mixer (5; 12, 13) which mixes the various components (SL1, H1, SL2, H2) of the coating medium , the mixer (5; 12, 13) having a plurality of fixed mixing elements (6) and structurally integrated into the atomizer (1; 9),
dadurch gekennzeichnet:, characterized:,
b) dass der Mischer (5; 12, 13) ein Gittermischer ist, bei dem die Mischelemente (6) gitterförmig ineinander verschränkt angeordnet sind. b) that the mixer (5; 12, 13) is a lattice mixer, in which the mixing elements (6) are arranged interlaced in a lattice-like manner.
2. Zerstäuber (1; 9) nach Anspruch 1, 2. atomizer (1; 9) according to claim 1,
dadurch gekennzeichnet, characterized,
a) dass die einzelnen Mischelemente (6) jeweils einen im Wesentlichen rechteckigen Querschnitt aufweisen, und/oder a) that the individual mixing elements (6) each have a substantially rectangular cross section, and / or
b) dass die einzelnen Mischelemente (6) jeweils langgestreckt sind, und/oder b) that the individual mixing elements (6) are each elongated, and / or
c) dass die einzelnen Mischelemente (6) jeweils gerade c) that the individual mixing elements (6) each straight
sind, und/oder  are, and / or
d) dass die einzelnen Mischelemente (6) jeweils scharfkantig sind, und/oder d) that the individual mixing elements (6) are each sharp-edged, and / or
e) dass die einzelnen Mischelemente (6) jeweils stabförmig sind, und/oder e) that the individual mixing elements (6) are each rod-shaped, and / or
f) dass die einzelnen Mischelemente (6) aus Kunststoff bestehen . f) that the individual mixing elements (6) are made of plastic.
3. Zerstäuber (1; 9) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, 3. atomizer (1; 9) according to any one of the preceding claims, characterized
a) dass die einzelnen Mischelemente (6) einen bestimmten Anstellwinkel relativ zur Strömungsrichtung aufweisen, und/oder a) that the individual mixing elements (6) have a certain angle of attack relative to the flow direction, and / or
b) dass der Anstellwinkel der Mischelemente (6) größer ist als 20°, 30° oder 40° und/oder kleiner als 70°, 60° o- der 50°, und/oder b) that the angle of attack of the mixing elements (6) is greater than 20 °, 30 ° or 40 ° and / or less than 70 °, 60 ° or 50 °, and / or
c) dass der Anstellwinkel bei allen Mischelementen (6) im Wesentlichen gleich ist. c) that the angle of attack is substantially the same for all mixing elements (6).
4. Zerstäuber (1; 9) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, 4. atomizer (1; 9) according to one of the preceding claims, characterized
a) dass der Mischer (5; 12, 13) mehrere Abschnitte (7, 8) aufweist, die in Strömungsrichtung hintereinander angeordnet sind und nacheinander durchströmt werden, und/oder a) that the mixer (5, 12, 13) has a plurality of sections (7, 8), which are arranged one behind the other in the flow direction and are flowed through in succession, and / or
b) dass die Mischelemente (6) in den in Strömungsrichtung benachbarten Abschnitten des Mischers (5; 12, 13) un- terschiedlich ausgerichtet sind, und/oder b) that the mixing elements (6) are aligned differently in the sections of the mixer (5, 12, 13) which are adjacent in the flow direction, and / or
c) dass die Anzahl der Abschnitte des Mischers (5; 12, 13) größer ist als 5, 6, 7, 8, 9, 10 oder 11, und/oder d) dass der Mischer (5; 12, 13) in Strömungsrichtung langgestreckt ist, und/oder c) that the number of sections of the mixer (5; 12, 13) is greater than 5, 6, 7, 8, 9, 10 or 11, and / or d) that the mixer (5; 12, 13) in the flow direction is elongated, and / or
e) dass der Mischer (5; 12, 13) im Wesentlichen zylindrisch ist, und/oder e) that the mixer (5; 12, 13) is substantially cylindrical, and / or
f) dass der Mischer (5; 12, 13) eine Baulänge von weniger als 10cm, 8cm oder 6cm aufweist, und/oder f) that the mixer (5; 12, 13) has a length of less than 10 cm, 8 cm or 6 cm, and / or
g) dass der Mischer (5; 12, 13) vollständig innerhalb des g) that the mixer (5; 12, 13) completely within the
Zerstäubers (1; 9) angeordnet ist. Nebulizer (1, 9) is arranged.
5. Zerstäuber (1; 9) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, 5. atomizer (1; 9) according to one of the preceding claims, characterized
a) dass der Zerstäuber (1; 9) ein steuerbares Hauptnadelventil (10, 11) aufweist, das in Abhängigkeit von sei- ner Ventilstellung bestimmt, ob der Zerstäuber (1; 9) das Beschichtungsmittel appliziert oder nicht, und b) dass der Mischer (5; 12, 13) stromaufwärts vor dem a) that the atomizer (1; 9) has a controllable main needle valve (10, 11) which, depending on its valve position, determines whether the atomizer (1; 9) applies the coating agent or not, and b) that the mixer (5; 12, 13) upstream of the
Hauptnadelventil (10, 11) angeordnet ist, und  Main needle valve (10, 11) is arranged, and
c) dass zwischen dem stromabwärts gelegenen Ende des Mi- schers (5; 12, 13) und dem Hauptnadelventil (10, 11) eine Leitungslänge (1) liegt, die kürzer ist als 10cm, 6cm oder 5cm. c) that between the downstream end of the mixer (5, 12, 13) and the main needle valve (10, 11), a line length (1) is shorter, which is shorter than 10cm, 6cm or 5cm.
6. Zerstäuber (1; 9) nach einem der vorhergehenden Ansprü- che, dadurch gekennzeichnet, 6. Atomiser (1; 9) according to one of the preceding claims, characterized
a) dass der Zerstäuber (1; 9) ein hohles Farbrohr (14) a) that the atomizer (1; 9) a hollow color tube (14)
aufweist, um das Beschichtungsmittel zuzuführen, und b) dass der Mischer (5; 12, 13) vollständig in dem Farbrohr (14) angeordnet ist, und/oder  b) that the mixer (5; 12, 13) is arranged completely in the paint tube (14), and / or
c) dass die Mischelemente (6) ohne ein zusätzliches Mischrohr in dem Farbrohr (14) angeordnet sind, und/oder d) dass der Durchmesser des Mischers (5; 12, 13) im Wesentlichen dem Durchmesser des Farbrohrs (14) entspricht, so dass der Mischer (5; 12, 13) den Quer- schnitt des Farbrohrs (14) vollständig ausfüllt. c) that the mixing elements (6) without an additional mixing tube in the paint tube (14) are arranged, and / or d) that the diameter of the mixer (5; 12, 13) substantially corresponds to the diameter of the paint tube (14), so the mixer (5, 12, 13) completely fills the cross section of the paint tube (14).
7. Zerstäuber (1; 9) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, 7. Atomiser (1; 9) according to one of the preceding claims, characterized
a) dass der Zerstäuber (1; 9) zur Applizierung von mindes- tens zwei verschiedenen Lacksystemen geeignet ist, wobei jedes der beiden Lacksysteme mehrere Komponenten aufweist, insbesondere einen Stammlack (SL1, SL2) und einen Härter (Hl, H2), und b) dass der Zerstäuber (1; 9) für jedes der beiden Lacksysteme jeweils einen Mischer (5; 12, 13) aufweist, wobei die Mischer (5; 12, 13) baulich in den Zerstäuber (1; 9) integriert sind. a) that the atomizer (1; 9) is suitable for the application of at least two different paint systems, each of the two paint systems having several components, in particular a master paint (SL1, SL2) and a hardener (Hl, H2), and b) that the atomizer (1; 9) for each of the two coating systems each have a mixer (5; 12, 13), wherein the mixers (5; 12, 13) are structurally integrated into the atomizer (1; 9).
8. Zerstäuber (1; 9) nach Anspruch 6 und 7, 8. atomizer (1; 9) according to claim 6 and 7,
dadurch gekennzeichnet, characterized,
a) dass die Mischer (5; 12, 13) für die verschiedenen a) that the mixers (5, 12, 13) for the different
Lacksysteme gemeinsam in dem Farbrohr (14) angeordnet sind, und/oder  Paint systems are arranged together in the paint tube (14), and / or
b) dass die Mischer (5; 12, 13) für die verschiedenen b) that the mixers (5, 12, 13) for the different
Lacksysteme bezüglich der Strömungsrichtung nebeneinander angeordnet sind, und/oder  Paint systems are arranged side by side with respect to the flow direction, and / or
c) dass die Mischer (5; 12, 13) für die verschiedenen c) that the mixers (5, 12, 13) for the different
Lacksysteme jeweils nur einen Teil des Querschnitts des Paint systems each only a part of the cross section of the
Farbrohrs (14) ausfüllen, und/oder Fill paint tube (14), and / or
d) dass die Mischer (5; 12, 13) für die verschiedenen d) that the mixers (5, 12, 13) for the different
Lacksysteme jeweils ein Mischrohr aufweisen, in dem die Mischelemente (6) angeordnet sind, wobei die Mischrohre die Mischer (5; 12, 13) voneinander trennen, und/oder e) dass die Mischer (5; 12, 13) für die verschiedenen  Paint systems each having a mixing tube in which the mixing elements (6) are arranged, wherein the mixing tubes, the mixer (5; 12, 13) separated from each other, and / or e) that the mixer (5; 12, 13) for the various
Farbsysteme unterschiedliche Mischeigenschaften aufweisen, die an die Eigenschaften des jeweiligen Farbsystems angepasst sind.  Color systems have different mixing properties, which are adapted to the properties of the respective color system.
9. Zerstäuber (1; 9) nach Anspruch 6 und 7, dadurch gekennzeichnet, dass der Mischer (5; 12, 13) für das eine Lacksystem in dem Farbrohr (14) angeordnet ist, während der Mischer (5; 12, 13) für das andere Farbsystem außerhalb des Farbrohrs (14) angeordnet ist, insbesondere in einem Ventilblock des Zerstäubers (1; 9) stromaufwärts vor dem Farbrohr (14) . 9. Atomiser (1; 9) according to claim 6 and 7, characterized in that the mixer (5; 12, 13) for the one paint system is arranged in the paint tube (14), while the mixer (5; 12, 13) for the other color system outside the color tube (14) is arranged, in particular in a valve block of the atomizer (1; 9) upstream of the paint tube (14).
10. Zerstäuber (1; 9) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mehrere Mischer (5; 12, 13) in dem Zerstäuber (1; 9) angeordnet sind. 10. Atomiser (1; 9) according to one of the preceding claims, characterized in that a plurality of mixers (5; 12, 13) are arranged in the atomizer (1; 9).
11. Verwendung eines Gittermischers (5; 12, 13) mit mehreren gitterförmig ineinander verschränkten Mischelementen (6) zur Mischung von mehreren Komponenten (SL1, Hl, SL2, H2) eines Beschichtungsmittels in einem Zerstäuber (1; 9), insbe¬ sondere in einem Rotationszerstäuber. 11. The use of a grid mixer (5; 12, 13) having a plurality of grid-like interlaced mixing elements (6) for mixing a plurality of components (SL1, Hl, SL2, H2) of a coating agent in an atomizer (1; 9), in particular ¬ sondere in a rotary atomizer.
EP11719471.2A 2010-05-07 2011-05-04 Atomizer with a lattice mixer Active EP2566628B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11719471T PL2566628T5 (en) 2010-05-07 2011-05-04 Atomizer with a lattice mixer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010019771A DE102010019771A1 (en) 2010-05-07 2010-05-07 Atomizer with a lattice mixer
PCT/EP2011/002228 WO2011138028A1 (en) 2010-05-07 2011-05-04 Atomizer with a lattice mixer

Publications (3)

Publication Number Publication Date
EP2566628A1 true EP2566628A1 (en) 2013-03-13
EP2566628B1 EP2566628B1 (en) 2017-09-06
EP2566628B2 EP2566628B2 (en) 2020-06-24

Family

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US (1) US9539594B2 (en)
EP (1) EP2566628B2 (en)
CN (1) CN102883818B (en)
DE (1) DE102010019771A1 (en)
ES (1) ES2648137T5 (en)
MX (1) MX2012012740A (en)
PL (1) PL2566628T5 (en)
WO (1) WO2011138028A1 (en)

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Also Published As

Publication number Publication date
US20150122915A1 (en) 2015-05-07
WO2011138028A1 (en) 2011-11-10
ES2648137T5 (en) 2021-02-22
PL2566628T5 (en) 2020-11-02
US9539594B2 (en) 2017-01-10
EP2566628B1 (en) 2017-09-06
CN102883818B (en) 2016-01-06
MX2012012740A (en) 2012-11-21
PL2566628T3 (en) 2018-02-28
ES2648137T3 (en) 2017-12-28
DE102010019771A1 (en) 2011-11-10
CN102883818A (en) 2013-01-16
EP2566628B2 (en) 2020-06-24

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