EP3887057B1 - Pulvérisateur rotatif - Google Patents
Pulvérisateur rotatif Download PDFInfo
- Publication number
- EP3887057B1 EP3887057B1 EP19800974.8A EP19800974A EP3887057B1 EP 3887057 B1 EP3887057 B1 EP 3887057B1 EP 19800974 A EP19800974 A EP 19800974A EP 3887057 B1 EP3887057 B1 EP 3887057B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bell cup
- gap
- paint
- nozzle
- paint nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
- B05B15/555—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids discharged by cleaning nozzles
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- 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
- B05B3/1035—Driving means; Parts thereof, e.g. turbine, shaft, bearings
- B05B3/1042—Means for connecting, e.g. reversibly, the rotating spray member to its driving shaft
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- 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
- B05B3/1064—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 the liquid or other fluent material to be sprayed being axially supplied to the rotating member through a hollow rotating shaft
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- 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
- B05B3/1092—Means for supplying shaping gas
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- 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
- B05B3/1007—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 characterised by the rotating member
- B05B3/1014—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 characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
Definitions
- the invention relates to a rotary atomizer for applying a spray jet of a coating agent (e.g. paint) to a component (e.g. motor vehicle body component).
- a coating agent e.g. paint
- a component e.g. motor vehicle body component
- Such rotary atomizers are state of the art (e.g. EP 0 715 896 B1 ) and have a bell plate as an application element, which is mounted on a bell plate shaft of the rotary atomizer that rotates during operation, whereby the bell plate shaft is usually driven by a compressed air turbine.
- a paint tube for supplying the paint to be applied runs inside the hollow bell plate shaft in the rotary atomizer, whereby a paint nozzle is inserted into the end of the paint tube, which dispenses the paint in the direction of the bell plate.
- a distributor disc holder is arranged in the middle of the bell plate, to which a distributor disc holder arranged on the front is attached.
- the paint initially emerging axially from the paint nozzle hits the distributor disc and is mostly directed radially outwards onto the overflow surface of the bell plate, so that the paint then finally reaches the spray edge of the bell plate and is sprayed off there.
- part of the paint initially exiting axially from the paint nozzle passes through a central hole in the distributor disc in order to permanently wet the frontal paint flow surface of the distributor disc with paint.
- the well-known rotary atomizer also has the option of external rinsing in order to rinse the outer surface of the bell plate with a rinsing agent.
- rinsing agent can be introduced into the bell plate via the paint nozzle, which then flows via external rinsing channels into an external rinsing chamber on the rear side of the bell plate, from where the rinsing agent then flows over the outer surface of the bell plate.
- the invention is therefore based on the object of improving the known rotary atomizer described at the outset.
- the invention is based on the fluid dynamics knowledge that the disturbing backflow of the paint within the bell cup is caused by unsuitable pressure conditions within the bell cup system.
- the invention therefore includes the general technical teaching of designing the rotary atomizer and the bell plate system in such a way that the air pressure at the outlet opening of the paint nozzle during operation is always lower than the rear air pressure in the nozzle chamber of the bell plate and in the external flushing channels in order to prevent a disruptive backflow of the coating agent from the outlet opening of the paint nozzle backwards towards the nozzle chamber due to this pressure difference.
- An overpressure in the nozzle chamber of the bell plate and in the external flushing channels compared to the air pressure at the outlet opening of the paint nozzle prevents the disruptive backflow of the coating agent.
- the invention therefore preferably provides that the above-mentioned design dimensions of the rotary atomizer are coordinated with one another in such a way that the desired pressure conditions are set, namely in such a way that the air pressure at the outlet opening of the paint nozzle during operation is always lower than the air pressure in the nozzle chamber of the bell cup and in the external flushing channels in order to avoid the disruptive backflow of the coating agent from the outlet opening of the paint nozzles backwards in the direction of the nozzle chamber.
- the invention therefore preferably provides that the design dimensions from the two aforementioned groups are suitably coordinated with one another in order to achieve the desired pressure conditions.
- the number of external flushing channels in the bell cup is less than 10, 9, 8, 7, 6 or even less than 5 in order to achieve the pressure ratio to prevent backflow.
- the external flushing channels are usually distributed over the circumference of the bell cup and oppose the disruptive backflow with a flow resistance, so that reducing the number of external flushing channels increases the flow resistance and thus contributes to achieving the desired pressure ratios.
- the external flushing channels together can have a total cross-sectional area that is less than 4mm 2 , 6mm 2 , 10mm 2 , 15mm 2 , 20mm 2 , 25mm 2 , 30mm 2 or 35mm 2 in order to achieve the pressure ratio to prevent backflow.
- the external flushing channels each have an internal diameter of 1mm-2mm, in particular essentially 1.5mm, in order to achieve the pressure ratio to avoid backflow.
- An internal diameter of the external flushing channels that is too small is disruptive here, because it impairs external flushing processes.
- an external flushing channel that is too large is disruptive, because it facilitates the disruptive backflow of paint within the bell plate system.
- the area of the The inner diameter of the external flushing channels of 1mm-2mm therefore represents a good compromise.
- the external flushing channels preferably have a total length of 5mm-15mm, 7mm-10mm or 8mm-8.7mm.
- the external flushing channels each consist of several (e.g. two) straight tap holes that merge into one another and are angled to one another.
- this is advantageous in terms of manufacturing technology because the tap holes can be created by drilling.
- it is also advantageous in terms of flow technology because the kink in the external flushing channels counteracts the undesirable backflow of the paint.
- the tap holes leading into the outer flushing chamber of the bell plate are shorter than the paint tap holes on the paint nozzle side.
- the shorter tap holes leading into the external flushing area of the bell plate preferably have a length of 0.5mm-2mm or 1.0mm-1.4mm.
- the longer tap holes on the paint nozzle side preferably have a length of 5mm-10mm or 6mm-8mm.
- the external flushing chamber in the bell plate also influences the pressure conditions in the bell plate system. It has been shown that increasing the external diameter of the external flushing chamber has a positive effect on the pressure conditions.
- the external diameter of the flushing chamber in the bell plate is therefore preferably larger than 30.5mm, 31mm, 31.5mm, 32mm or 32.5mm.
- gap width of the gap between the overflow surface of the bell cup on the one hand and the distributor disc on the other.
- this gap width should preferably be in the range of 0.1 mm - 0.25 mm, and in particular in the range of 0.15 mm - 0.2 mm.
- the gap between the overflow surface of the bell cup on the one hand and the distributor disc on the other hand is not only important in terms of its gap width, but also in terms of its gap length in the direction of flow.
- the gap length of the gap between the overflow surfaces of the bell cup on the one hand and the distributor disc on the other hand is therefore preferably in the range of 3mm-10mm, 3.5mm-7.5mm or 4.5mm-5.5mm.
- the paint nozzle in the bell plate is arranged in a nozzle chamber that is formed by the bell plate. It has proven advantageous to increase the diameter of the nozzle chamber in order to increase the radial gap width between the paint nozzle on the one hand and the inner wall of the nozzle chamber on the other, which also helps to optimize the pressure ratio and prevent backflow of the paint.
- the nozzle chamber in the bell plate therefore preferably has a diameter of more than 11mm, 11.5mm, 12mm, 12.5mm, 13mm or even more than 13.3mm. A nozzle chamber diameter of 13.4mm has proven to be particularly advantageous in each case.
- Another important design dimension of the rotary atomizer is the gap width of the axial gap between the shaping air ring of the rotary atomizer on the one hand and the rear of the bell plate on the other. It has proven advantageous to increase this axial gap width of the gap between the shaping air ring and the rear of the bell plate.
- the axial gap between the shaping air ring on the one hand and the rear of the bell plate on the other is therefore preferably larger than 3.0 mm, 4 mm, 4.5 mm, 5 mm or 5.2 mm, with a value of 5.3 mm proving particularly advantageous.
- the bell plate shaft is preferably exposed in the axial gap between the shaping air ring and the rear of the bell plate without an external cover in order to advantageously influence the pressure ratio to avoid backflow.
- the pressure conditions in the bell cup system are also influenced by the outside diameter of the paint nozzle.
- the paint nozzle therefore preferably has an outside diameter of less than 4mm, 3.5mm, 3mm or even less than 2.8mm at its free end, with an outside diameter of 2.6mm or 3.2mm having proven to be particularly advantageous.
- a distributor disc holder is mounted in the middle of the bell cup as a separate component, as is also known from the prior art.
- the distributor disc is then mounted on the distributor disc holder.
- the paint nozzle protrudes through a central hole in the distributor disc holder, whereby the central bore preferably has an inner diameter of essentially 3.2 mm or 3.8 mm.
- the annular gap between the paint nozzle on the one hand and the surrounding distributor disc holder on the other hand preferably has a radial gap width of 0.2 mm - 0.6 mm, with a value of 0.3 mm having proven to be particularly advantageous.
- the axial gap length must also be mentioned, which is preferably in the range of 4.5mm-8.5mm or 5.5mm-7.5mm, whereby a value of 6.5 has proven to be advantageous.
- the axial cross-section of the annular gap must also be mentioned, which preferably has a cross-sectional area of 2mm 2 -7mm 2 , 3mm 2 -6mm 2 or 4mm 2 -5mm 2 .
- the invention not only claims protection for the rotary atomizer according to the invention described above. Rather, the invention also claims protection for a corresponding operating method which, in addition to the design dimensions described above, also provides for certain operating parameters, such as the speed of the bell plate shaft, the mass flow of the coating agent and the mass flow of the shaping air.
- the design dimensions mentioned above and the operating parameters mentioned above are preferably coordinated with one another in such a way that the desired pressure conditions are established in the bell plate system in order to avoid the undesirable backflow of the coating agent in the bell plate system.
- the air pressure at the outlet opening of the paint nozzle must be lower than the air pressure in the nozzle chamber of the bell plate and in the external flushing channels so that no backflow of the coating agent occurs.
- FIG. 1 show a preferred embodiment of a rotary atomizer 1 according to the invention, which can be used for paint application in a painting system for painting motor vehicle body components.
- the rotary atomizer 1 has a bell-plate shaft 2 which rotates during operation and is hollow and is usually driven by a compressed air turbine, the compressed air turbine not being shown for the sake of simplicity.
- a bell plate 3 is screwed onto the free end of the bell plate shaft 2, which is known from the prior art.
- the paint to be applied is supplied from the rotary atomizer 1 via a paint tube 4 which runs coaxially in the hollow bell-plate shaft 2 of the rotary atomizer.
- a paint nozzle 5 is inserted into the free end of the paint tube 4, which is inserted into the Figures 4 and 5 presented in detail and, for example, in a similar form in DE 10 2009 037 604 A1 is described.
- the paint nozzle 5 firstly has an axially continuous paint channel 6 which guides the paint to be applied from the paint tube 4 to an outlet opening 7 of the paint nozzle 5.
- the paint nozzle 5 also contains a rinsing agent channel 8 which branches off in the direction of flow into two rinsing agent channels 9, 10. During a rinsing process, a portion of the rinsing agent supplied via the rinsing agent channel 8 is discharged axially forwards through the rinsing agent channel 9 in order to rinse the bell plate 3. Another portion of the rinsing agent, however, is branched off via the rinsing agent channel 10 in order to rinse a nozzle chamber 11 which surrounds the paint nozzle 5.
- a distributor disc holder 12 is mounted centrally in the bell cup 3, which carries a distributor disc 13, wherein the distributor disc 13 is fastened to the distributor disc holder 12 by means of a plurality of bolts 14 arranged distributed over the circumference.
- the rotary atomizer 1 with the bell plate 3 also enables external rinsing of an outer surface 19 of the bell plate 3 in order to clean the outer surface 19 of the bell plate 3.
- external rinsing channels 20 are provided in the bell plate 3 distributed over the circumference, each consisting of two straight and angled tap holes.
- the external rinsing channels 20 extend from the nozzle chamber 11 and open outwards into an external rinsing chamber 21, whereby the rinsing agent can then flow outwards from the external rinsing chamber 21 onto the outer surface 19 of the bell plate 3 during a rinsing process, which is known per se from the prior art.
- the rotary atomizer 1 has a shaping air ring 22 in order to be able to shape the spray jet of paint emitted by the bell plate 3, which is known per se from the prior art.
- the shaping air ring 22 can direct shaping air from behind onto the outer surface 19 of the bell plate 3 via a ring-shaped ring of shaping air nozzles 23. It should be mentioned here that between the rear of the bell plate 3 on the one hand and the shaping air ring 22 on the other hand there is a gap 24 which has a certain axial gap width.
- the above-mentioned design dimensions of the bell plate 3 and the rotary atomizer are coordinated with one another in such a way that the air pressure at the outlet opening of the paint nozzle 5 during operation is always lower than the air pressure in the nozzle chamber 11 and in the external flushing channels 20 of the bell plate 3. This prevents a disruptive backflow of the paint to the rear.
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- Nozzles (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Claims (14)
- Pulvérisateur rotatif (1) pour l'application d'un jet de pulvérisation d'un produit de revêtement, plus particulièrement d'une peinture, sur un composant, plus particulièrement sur un composant de carrosserie de véhicule automobile, aveca) un anneau à air de guidage (22) pour la distribution d'un air de guidage pour la formation du jet de pulvérisation du produit de revêtement,b) un arbre de bol creux (2) tournant lors du fonctionnement,c) un tube de couleur (4) qui est disposé de manière globalement coaxiale dans l'arbre de bol (2), dans lequel l'arbre de bol (2) et le tube de couleur interne (4) forment un interstice annulaire (27) avec une largeur d'interstice (E) déterminée dans la direction radiale,d) une buse de couleur (5) qui est disposé dans le tube de couleur (4) de manière globalement coaxiale et qui distribue le produit de revêtement à appliquer globalement dans la direction axiale à travers une ouverture de sortie (7),e) un bol (3) monté sur l'arbre de bol (2) et tournant lors du fonctionnement, avece1) un interstice (24) entre la face frontale de l'anneau d'air de guidage (22) et la face arrière du bol (3) avec une largeur d'interstice (G) déterminée dans la direction axiale,e2) un alésage central pour le guidage axial de la buse de couleur (5) avec un interstellaire annulaire (25) entre le bol (3) et la buse de couleur (5) avec une largeur d'interstice (C) déterminée dans la direction radiale,e3) une arête de pulvérisation annulaire (18) pour la pulvérisation du produit de revêtement,e4) une surface d'enveloppe externe (19),e5) un espace de rinçage externe (21) au niveau de la face arrière du bol (3) pour le rinçage de la surface d'enveloppe externe (19) avec un produit de rinçage, dans lequel l'espace de rinçage externe (21) forme, au niveau de la face externe de l'arbre de bol (2), un interstice annulaire (28) avec une largeur d'interstice (F) déterminée dans la direction radiale,e6) plusieurs canaux de rinçage externes (20) dans le bol (3) entre la buse de couleur (5) et l'espace de rinçage externe (21) pour l'introduction d'un produit de rinçage à partir de la buse de couleur (5) vers la surface d'enveloppe externe (19) du bol (3) pour un rinçage externe du bol (3),e7) une chambre de buse (11) au niveau de la face arrière du bol (3) pour le logement de la buse de couleur (5) avec un interstice annulaire (26) entre la buse de couleur (5) et la paroi interne de la chambre de buse (11) avec une largeur d'interstice (D) déterminée dans la direction radiale,e8) une surface de flux excédentaire côté frontal (17), dans lequel le produit de revêtement à appliquer s'écoule, lors du fonctionnement, à partir l'ouverture de sortie (7) de la buse de couleur (5), par l'intermédiaire de la surface de flux excédentaire (17), vers l'extérieur en direction de l'arête de pulvérisation (18) du bol (3) ete9) un disque de répartition (13) pour la répartition du produit de revêtement sortant de l'ouverture de sortie (7) de la buse de couleur (5), dans lequel le disque de répartition (13)- est disposée dans le bol (3) du côté frontal,- conduit le produit de revêtement provenant de la buse de couleur (5) partiellement de manière radiale vers l'extérieur en direction de la surface de flux excédentaire (17) du bol (3) et partiellement de manière axiale à travers un alésage central (15) dans le disque de répartition (13) en direction de la face frontale du disque de répartition (13),- dans lequel le disque de répartition (13) forme, avec la surface de flux excédentaire (17) du bol (3), un interstice (16) avec une largeur d'interstice (B) déterminée, e10) un logement de disque de répartition (12), qui est disposé dans le bol (3) et qui présente un alésage central (15) avec un diamètre (A) déterminé, dans lequel le disque de répartition (13) est monté sur le logement de disque de répartition (12),
caractérisé en ce quef) le pulvérisateur rotatif (1) est conçu de sorte que la pression d'air au niveau de l'ouverture de sortie (7) de la buse de couleur (5) est, lors du fonctionnement, inférieure à la pression d'air dans la chambre de buse (11) du bol (3) et de façon à empêcher, dans les canaux de rinçage externe (20), grâce à cette différence de pression, un retour du produit de revêtement de l'ouverture de sortie (7) de la buse de couleur (5) vers l'arrière en direction de la chambre de buse (11). - Pulvérisateur rotatif (1) selon la revendication 1, caractérisé en ce que les dimensions de construction suivantes du pulvérisateur rotatif (1) sont harmonisées entre elles de sorte que la pression d'air au niveau de l'ouverture de sortie (7) de la buse de couleur (5) est, lors du fonctionnement, inférieure à la pression d'air dans la chambre de buse (11) du bol (3) et dans les canaux de rinçage externes (20) :a) le diamètre (A) de l'alésage central dans le logement du disque de répartition (12) du bol (3),b) la largeur d'interstice (B) de l'interstice (16) entre le disque de répartition (13) et la surface de flux excédentaire (17) du bol (3),c) la largeur d'interstice (C) de l'interstice annulaire (25) entre le bol (3) et la buse de couleur (5),d) la largeur d'interstice (D) de l'interstice annulaire (26) entre la buse de couleur (5) et la paroi interne de la chambre de buse (11),e) la largeur d'interstice (E) de l'interstice annulaire (27) entre l'arbre du bol et le tube de couleur interne (4),f) la largeur d'interstice (F) de l'interstice annulaire (28) de l'espace de rinçage externe (21) au niveau de la face externe de l'arbre de bol (2) etg) la largeur d'interstice (G) de l'interstice (24) entre la face frontale de l'anneau d'air de guidage (22) et la face arrière du bol (3).
- Pulvérisateur rotatif (1) selon l'une des revendications précédentes,
caractérisé en ce quea) le nombre de canaux de rinçage externes (20) dans le bol (3) est inférieur à 10, 9, 8, 7, 6 ou 5, afin d'obtenir un rapport de pression permettant d'empêcher un écoulement de retour et/oub) les canaux de rinçage externes présentent ensemble une surface de section transversale totale qui est inférieure à 4 mm2, 6 mm2, 10 mm2, 15 mm2, 20 mm2, 25 mm2, 30 mm2 ou 35 mm2, afin d'obtenir un rapport de pression permettant d'empêcher un écoulement de retour. - Pulvérisateur rotatif (1) selon l'une des revendications précédentes,
caractérisé en ce quea) les canaux de rinçage externes (20) présentent respectivement un diamètre intérieur de 1 mm - 2 mm, plus particulièrement globalement de 1,5 mm, afin d'obtenir un rapport de pression permettant d'empêcher un écoulement de retour et/oub) les canaux de rinçage externes (20) présentent respectivement une longueur totale de 5 mm - 15 mm, 7 mm - 10 mm ou 8 mm - 8,7 mm. - Pulvérisateur rotatif (1) selon l'une des revendications précédentes,
caractérisé en ce quea) les canaux de rinçage externes (20) sont constitués respectivement de plusieurs, plus particulièrement d'exactement deux, perçages en ligne droite, qui s'entremêlent et qui présentent un angle entre eux et/oub) les perçages débouchant dans l'espace de rinçage externe (21) du bol (3) sont plus courts que les perçages du côté de la base de couleur et/ouc) les perçages plus courts débouchant dans l'espace de rinçage externe (21) du bol (3) présentent respectivement une longueur de 0,5 mm - 2 mm ou 1,0 mm - 1,4 mm et/oud) les perçages plus longs du côté de la base de couleur présentent respectivement une longueur de 5 mm - 10 mm ou 6 mm - 8 mm. - Pulvérisateur rotatif (1) selon l'une des revendications précédentes, caractérisé en ce que l'espace de rinçage externe (21) dans le bol (3) présente un diamètre extérieur supérieur à 30,5 mm, 31 mm, 31,5 mm, 32 mm ou 32,5 mm, afin d'obtenir un rapport de pression permettant d'empêcher un écoulement de retour.
- Pulvérisateur rotatif (1) selon l'une des revendications précédentes,
caractérisé en ce quea) la largeur d'interstice (B) de l'interstice (16) entre la surface de flux excédentaire (17) du bol (3) et le disque de répartition (13) est de l'ordre de 0,1 mm - 0,25 mm, plus particulièrement de l'ordre de 0,15 mm - 0,2 mm et/oub) l'interstice (16) entre la surface de flux excédentaire (17) du bol (3) et le disque de répartition (13) présente une longueur d'interstice dans la direction d'écoulement qui est de l'ordre de 3 mm - 10 mm, 3,5 mm - 7,5 mm ou 4,5 mm - 5,5 mm. - Pulvérisateur rotatif (1) selon l'une des revendications précédentes, caractérisé en ce que la chambre de buse (11) dans le bol (3) présente, à l'extérieur, un diamètre supérieur à 11 mm, 11,5 mm, 12 mm, 12,5 mm, 13 mm ou supérieur à 13,3 mm, plus particulièrement globalement de 13,4 mm, afin d'agrandir la largeur d'interstice (D) radiale entre la buse de couleur (5) et la paroi interne de la chambre de buse (11) et d'obtenir ainsi un rapport de pression permettant d'empêcher un écoulement de retour.
- Pulvérisateur rotatif (1) selon l'une des revendications précédentes,
caractérisé en ce quea) l'interstice axial (24) entre l'anneau d'air de guidage (22) et la face arrière du bol (3), présente une largeur d'interstice axiale (G) qui est supérieure à 3,0 mm, 4 mm, 4,5 mm, 5 mm ou 5,2 mm, plus particulièrement globalement 5,3 mm, afin d'obtenir le rapport de pression permettant d'empêcher un écoulement de retour et/oub) l'arbre du bol (2) dans l'interstice axial (24) entre l'anneau d'air de guidage (22) et la face arrière du bol (3) repose librement sans recouvrement extérieur, afin d'obtenir le rapport de pression permettant d'empêcher un écoulement de retour. - Pulvérisateur rotatif (1) selon l'une des revendications précédentes, caractérisé en ce que la buse de couleur (5) présente, à son extrémité libre, un diamètre extérieur inférieur à 4 mm, 3,5 mm, 3 mm ou 2,8 mm, plus particulièrement globalement 2,6 mm ou 3,2 mm.
- Pulvérisateur rotatif (1) selon l'une des revendications 1 à 9,
caractérisé en ce quea) l'alésage central dans le logement de disque de répartition (12) présente un diamètre (A) globalement égal à 3,2 mm ou 3,8 mm et/oub) l'interstice annulaire (25) entre la buse de couleur interne (5) et le logement de disque de répartition externe (12) présente une largeur d'interstice radiale de 0,2 mm - 0,6 mm, plus particulièrement globalement 0,3 mm et/ouc) l'interstice annulaire (25) entre la buse de couleur interne (5) et le logement de disque de répartition externe (12) présente une longueur d'interstice axiale de 4,5 mm - 8,5 mm ou 5,5 mm - 7,5 mm, plus particulièrement globalement 6,5 mm et/oud) l'interstice annulaire (25) entre la buse de couleur interne (5) et le logement de disque de répartition externe (12) présente, dans une section axiale, une surface de section transversale de 2 mm2 - 7 mm2, 3 mm2 - 6 mm2 ou 4 mm2 - 5 mm2. - Procédé de fonctionnement pour un pulvérisateur rotatif (1) selon l'une des revendications précédentes, caractérisé en ce que la pression d'air au niveau de l'ouverture de sortie (7) de la buse de couleur (5) est inférieure à la pression d'air dans la chambre de buse (11) du bol (3) et dans les canaux de rinçage externes (20), afin d'empêcher, grâce à cette différence de pression, un écoulement de retour du produit de revêtement de l'ouverture de sortie (7) de la buse de couleur (5) vers l'arrière en direction de la chambre de buse (11).
- Procédé de fonctionnement selon la revendication 12, caractérisé en ce quea) l'arbre de bol (2) tourne avec une vitesse de rotation déterminée,b) la buse de couleur (5) distribue le produit de revêtement avec un débit déterminé,c) l'anneau d'air de guidage (22) distribue l'air de guidage avec un débit déterminé etd) les dimensions de construction et paramètres de fonctionnement suivants sont harmonisés entre eux de sorte que la pression d'air au niveau de l'ouverture de sortie (7) de la buse de couleur (5) est inférieure à la pression d'air dans la chambre de buse (11) du bol (3) et dans les canaux de rinçage externes (20), afin d'empêcher, grâce à la différence de pression, un écoulement de retour du produit de revêtement de l'ouverture de sortie (7) de la buse de couleur (5) vers l'arrière en direction de la chambre de buse (11) :d1) le diamètre (A) de l'alésage central dans le logement de disque de répartition (12) du bol (3),d2) la largeur d'interstice (B) de l'interstice (16) entre le disque de répartition (13) et la surface de flux excédentaire (17) du bol (3),d3) la largeur d'interstice (C) de l'interstice de l'interstice annulaire (25) entre le bol (3) et la buse de couleur (5),d4) la largeur d'interstice (D) de l'interstice annulaire (26) entre la buse de couleur (5) et la paroi interne de la chambre de buse (11),d5) la largeur d'interstice (E) de l'interstice (27) entre l'arbre de bol (2) et le tube de couleur interne (4),d6) la largeur d'interstice (F) de l'interstice annulaire (28) de l'espace de rinçage externe (21) au niveau de la face extérieure de l'arbre de bol (2) etd7) la largeur d'interstice (G) de l'interstice (24) entre la face frontale de l'anneau d'air de guidage (22) et la face arrière du bol (3),d8) la vitesse de rotation de l'arbre de bol (2),d9) le débit du produit de revêtement etd10) le débit d'air de guidage.
- Robot de revêtement, plus particulièrement robot de peinture, avec une cinématique de robot en série ou en parallèle avec plusieurs, plus particulièrement cinq, six ou sept axes mobiles et un pulvérisateur rotatif (1) selon l'une des revendications 1 à 11.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018129964.8A DE102018129964B4 (de) | 2018-11-27 | 2018-11-27 | Rotationszerstäuber und dessen Betriebsverfahren sowie Beschichtungsroboter mit Rotationszerstäuber |
| PCT/EP2019/080268 WO2020108930A1 (fr) | 2018-11-27 | 2019-11-05 | Pulvérisateur rotatif |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3887057A1 EP3887057A1 (fr) | 2021-10-06 |
| EP3887057B1 true EP3887057B1 (fr) | 2025-02-12 |
Family
ID=68501599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19800974.8A Active EP3887057B1 (fr) | 2018-11-27 | 2019-11-05 | Pulvérisateur rotatif |
Country Status (12)
| Country | Link |
|---|---|
| US (2) | US12145166B2 (fr) |
| EP (1) | EP3887057B1 (fr) |
| JP (1) | JP2022508190A (fr) |
| KR (1) | KR102598442B1 (fr) |
| CN (1) | CN112423894B (fr) |
| DE (1) | DE102018129964B4 (fr) |
| ES (1) | ES3022082T3 (fr) |
| HU (1) | HUE070359T2 (fr) |
| MX (1) | MX2021005960A (fr) |
| PL (1) | PL3887057T3 (fr) |
| WO (1) | WO2020108930A1 (fr) |
| ZA (1) | ZA202007232B (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676052B (zh) * | 2020-12-10 | 2022-04-12 | 哈尔滨工业大学 | 一种应用于高粘度涂料的涂料抛涂装置 |
| DE102021127163A1 (de) * | 2021-10-20 | 2023-04-20 | Dürr Systems Ag | Glockenteller und Rotationszerstäuber mit einem solchen Glockenteller |
| DE102024106389A1 (de) * | 2024-03-06 | 2025-09-11 | Dürr Systems Ag | Glockenteller für einen Rotationszerstäuber |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3000002C2 (de) * | 1980-01-02 | 1985-07-25 | Ernst Mueller Gmbh & Co, 7057 Winnenden | Elektrostatische Farbspritzpistole mit Rotationszertäuber |
| US4927081A (en) * | 1988-09-23 | 1990-05-22 | Graco Inc. | Rotary atomizer |
| JP2776225B2 (ja) * | 1993-12-17 | 1998-07-16 | トヨタ自動車株式会社 | 回転霧化静電塗装方法 |
| DE9419641U1 (de) | 1994-12-07 | 1995-02-02 | Dürr GmbH, 70435 Stuttgart | Rotationszerstäuber mit einem Glockenkörper |
| JP2000117155A (ja) * | 1998-10-13 | 2000-04-25 | Abb Kk | 回転霧化頭型塗装装置 |
| US20060219816A1 (en) * | 2005-04-05 | 2006-10-05 | Durr Systems | Rotary atomizer component |
| JP4750803B2 (ja) * | 2006-01-19 | 2011-08-17 | Abb株式会社 | 回転霧化頭型塗装装置 |
| US7954501B2 (en) * | 2006-03-08 | 2011-06-07 | Easywasher Corporation | Pressure cleaner accessory |
| FR2915115B1 (fr) * | 2007-04-23 | 2010-09-10 | Sames Technologies | Organe de pulverisation,dispositif de projection comportant un tel organe,installation de projection et methode de nettoyage d'un tel organe |
| JP5023828B2 (ja) * | 2007-06-14 | 2012-09-12 | トヨタ自動車株式会社 | 塗料供給経路の洗浄方法 |
| JP4709197B2 (ja) * | 2007-10-18 | 2011-06-22 | Abb株式会社 | カートリッジ式塗装装置 |
| DE102008027997A1 (de) * | 2008-06-12 | 2009-12-24 | Dürr Systems GmbH | Universalzerstäuber |
| DE102009037604A1 (de) * | 2009-08-14 | 2011-02-24 | Dürr Systems GmbH | Farbdüse für einen Glockenteller eines Rotationszerstäubers |
| DE102009042956A1 (de) * | 2009-09-24 | 2011-04-07 | Dürr Systems GmbH | Rotationszerstäuber und Verfahren zur Kontrolle seines Absprühkörpers |
| CN103717314B (zh) * | 2011-07-28 | 2017-02-15 | 3M创新有限公司 | 用于液体喷枪的具有一体化气帽/喷嘴的喷雾头组件 |
| US8851397B1 (en) * | 2013-11-14 | 2014-10-07 | Efc Systems, Inc. | Bell cup atomizer having improved cleaning capability |
| DE102015008659B4 (de) * | 2015-07-03 | 2019-06-19 | Dürr Systems Ag | Beschichtungsmittelventil und Rotationszerstäuber |
| DE102015009163A1 (de) | 2015-07-14 | 2017-01-19 | Dürr Systems Ag | Beschichtungsanlagenroboter, insbesondere Handhabungsroboter |
| CN207823271U (zh) * | 2017-12-20 | 2018-09-07 | 东莞新能源科技有限公司 | 一种分料盘和喷涂装置 |
-
2018
- 2018-11-27 DE DE102018129964.8A patent/DE102018129964B4/de active Active
-
2019
- 2019-11-05 KR KR1020217019671A patent/KR102598442B1/ko active Active
- 2019-11-05 JP JP2021529039A patent/JP2022508190A/ja active Pending
- 2019-11-05 ES ES19800974T patent/ES3022082T3/es active Active
- 2019-11-05 US US17/295,357 patent/US12145166B2/en active Active
- 2019-11-05 HU HUE19800974A patent/HUE070359T2/hu unknown
- 2019-11-05 CN CN201980047152.8A patent/CN112423894B/zh active Active
- 2019-11-05 EP EP19800974.8A patent/EP3887057B1/fr active Active
- 2019-11-05 WO PCT/EP2019/080268 patent/WO2020108930A1/fr not_active Ceased
- 2019-11-05 PL PL19800974.8T patent/PL3887057T3/pl unknown
- 2019-11-05 MX MX2021005960A patent/MX2021005960A/es unknown
-
2020
- 2020-11-19 ZA ZA2020/07232A patent/ZA202007232B/en unknown
-
2024
- 2024-10-18 US US18/920,067 patent/US20250041881A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20210276027A1 (en) | 2021-09-09 |
| HUE070359T2 (hu) | 2025-06-28 |
| US12145166B2 (en) | 2024-11-19 |
| MX2021005960A (es) | 2021-07-06 |
| PL3887057T3 (pl) | 2025-05-26 |
| DE102018129964B4 (de) | 2023-11-16 |
| EP3887057A1 (fr) | 2021-10-06 |
| ES3022082T3 (en) | 2025-05-28 |
| KR102598442B1 (ko) | 2023-11-06 |
| US20250041881A1 (en) | 2025-02-06 |
| WO2020108930A1 (fr) | 2020-06-04 |
| JP2022508190A (ja) | 2022-01-19 |
| CN112423894B (zh) | 2022-10-04 |
| ZA202007232B (en) | 2022-04-28 |
| DE102018129964A1 (de) | 2020-05-28 |
| CN112423894A (zh) | 2021-02-26 |
| KR20210095912A (ko) | 2021-08-03 |
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