EP2139604A2 - Spraying member, spraying device comprising such a member, spraying installation and method of cleaning such a member - Google Patents

Spraying member, spraying device comprising such a member, spraying installation and method of cleaning such a member

Info

Publication number
EP2139604A2
EP2139604A2 EP08805488A EP08805488A EP2139604A2 EP 2139604 A2 EP2139604 A2 EP 2139604A2 EP 08805488 A EP08805488 A EP 08805488A EP 08805488 A EP08805488 A EP 08805488A EP 2139604 A2 EP2139604 A2 EP 2139604A2
Authority
EP
European Patent Office
Prior art keywords
bowl
spraying
volume
product
spray
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
EP08805488A
Other languages
German (de)
French (fr)
Other versions
EP2139604B1 (en
Inventor
Patrick Ballu
Sylvain Perinet
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.)
Sames Kremlin SAS
Original Assignee
Sames Technologies SAS
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
Application filed by Sames Technologies SAS filed Critical Sames Technologies SAS
Priority to PL08805488T priority Critical patent/PL2139604T3/en
Publication of EP2139604A2 publication Critical patent/EP2139604A2/en
Application granted granted Critical
Publication of EP2139604B1 publication Critical patent/EP2139604B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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, i.e. the spraying being effected by centrifugal forces 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, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
    • 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
    • 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
    • B05B3/1057—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 with at least two outlets, other than gas and cleaning fluid outlets, for discharging, selectively or not, different or identical liquids or other fluent materials on the rotating element
    • 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
    • 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, i.e. the spraying being effected by centrifugal forces the liquid or other fluent material to be sprayed being axially supplied to the rotating member through a hollow rotating shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0403—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member
    • B05B5/0407—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell

Definitions

  • the present invention relates to a spraying member for a rotary projector coating product, and a projection device equipped with such a spraying member and a coating product spraying installation incorporating such a device.
  • the invention also relates to a method of cleaning such a spraying member.
  • Conventional rotating bowl spray is used for application to objects to be coated, such as motor vehicle bodies, primers, first coat and varnishes, with paint rates between 100 and 500cc / min.
  • the automobile market tends to reduce their length as well as the number of spraying robots installed on these lines.
  • the sprayers to be mounted on these robots must be able to spray coating products with high flow rates.
  • FR-A-1363681 discloses a liquid product spraying installation consisting of a jet liquid spraying member, at least one rotary spindle rotary member arranged thereafter, and means for varying the amount of sprayed product dispensed to the rotary spray member by varying the distance between the nozzle and the disk (s).
  • F RA-1363681 proposes to use two or more edge sprayers.
  • a technical problem posed by the "multi-bols" spraying members is the cleaning of the outer surface of the internal bowl (s), soiled during spraying, where the rotation of the member creates a depression between the bowls which causes the deposition of droplets on an outer surface. This surface is difficult to reach by the solvent during rinsing.
  • FR-A-2 170 940 discloses a spray member for spraying two separate products with two separate feed means. Such supply means, however, do not allow to simultaneously feed the two distribution surfaces of the spray member. In addition, the construction of such a spraying member is relatively complex and detrimental to the balance and compactness of this organ.
  • US-A-5,894,993 discloses a spraying member comprising a single internal coating product distribution surface and an annular guide for guiding solvent to clean the outer surface of the spraying member.
  • the flow of coating material sprayed by such a spraying member is relatively limited because there is only one spray edge. It is these drawbacks that the invention intends to remedy more particularly by providing a compact and compact multi-bowl spraying device whose geometry is such that the cleaning of the external surface of its internal bowl is facilitated.
  • the subject of the invention is a spraying member for a rotary coating product projector, said spraying member comprising at least one external bowl and an internal bowl, each bowl defining a spray edge, an internal surface of distribution and an outer surface the inner bowl is being arranged radially inside the outer bowl, then and in that a volume defined between the inner surface of the outer bowl and the outer surface of the inner bowl has a decreasing thickness between a first value, taken at a cleaning product inlet area in the volume, and a second value, taken at the spray edge of the outer bowl, the spray member being characterized in that comprises central supply means of the internal surfaces of distribution of the bowls.
  • the volume defined between the inner surface of the outer bowl and the outer surface of the inner bowl has a passage section which narrows in the direction of progression of the cleaning product towards the spraying edge of the bowl. external. Indeed, its thickness, which corresponds to the distance, taken perpendicularly to a median of this volume , between the inner surface of the outer bowl and the outer surface of the inner bowl, allows to control the distribution of the cleaning product in this volume.
  • the speed of the product increases between the bowls at the same time as the diameter of the bowls.
  • the pressure of the product between the bowls tends to decrease as the diameter of the bowls increases, i.e. in the direction of flow of the product.
  • the passage section is to be reduced, which provides the invention.
  • the passage section is to be reduced, which provides the invention.
  • the cleaning of these internal and external surfaces is thus optimized.
  • the central supply means can simultaneously feed the two internal distribution surfaces with a compact and balanced construction of the spray member
  • such a spraying member may incorporate one or more of the following features:
  • These central supply means comprise a distributor provided with an orifice aligned on an axis of symmetry of the internal and external surfaces of the bowls, this orifice being intended for the supply of coating product of the internal distribution surface of the internal bowl.
  • the supply means comprise a deflector mounted in the inner bowl facing a central portion of the inner surface of the distribution - the ratio of the second value of the volume thickness on the first value of this thickness is lower at 0.9, preferably at 0.5, more preferably at about 0.4,
  • the spraying edge of the outer bowl is axially indented with respect to the spraying edge of the inner bowl, by a distance greater than 1% of the diameter of the spraying edge of the internal bowl.
  • the invention also relates to a coating product spraying device which comprises a spraying member as mentioned above as well as means for driving this rotating member and means for supplying this member with a coating product.
  • the spraying member comprises a splitter provided with an orifice, as mentioned above, the diameter of this orifice is advantageously less than or equal to the internal diameter of the downstream end of the feed means of the feed product. coating.
  • the invention also relates to a coating product projection installation which comprises, inter alia, at least one projection device as mentioned above.
  • the invention relates to a method of cleaning a spraying member as mentioned above, this method comprising a step of gaving the volume defined between the inner surface of the outer bowl and the outer surface of the inner bowl product cleaning and / or air.
  • this gavage uses for this gavage a cleaning product or a mixture of cleaning products and foaming air.
  • FIG. 1 is a longitudinal sectional view of a coating product projector according to the invention used in an installation according to the invention and incorporating a spray member according to the invention;
  • FIG. 1 is an axial section of the spray member of Figure 1;
  • FIG. 3 is a perspective view, partially cut away, of the member of FIG. 2;
  • FIG. 4 is a section along the line IV-IV in FIG.
  • FIG. 5 is a view on a larger scale of the detail V in FIG. 2 and - Figure 6 is a view similar to Figure 5 for a second embodiment of the invention.
  • the projector P shown in Figure 1 is fed with coating material from one or more sources not shown and moved, for example with a substantially vertical movement represented by the double arrow F 1 , facing objects O to be coated in an installation I coating these objects.
  • the projector comprises an air turbine of which only the rotor 1 is visible in FIG. 1, this rotor being rotated about an axis XrXV
  • a body 2, fixed with respect to the axis surrounds the rotor 1 and is itself isolated from the outside by a cover 3.
  • An annular support 4 made of magnetic material, for example magnetic stainless steel, is mounted on the front face 21 of the body 2, this support being provided with an annular groove centered on the axis XrX'i and in which is disposed an annular magnet 41.
  • a coating material injector 5 is aligned on the axis Xi-X'i.
  • a spraying member 10 is mounted on a projector P and forms a frustoconical surface 10A intended to cooperate with a frustoconical surface 1A of the rotor 1 to rotate the spraying member 10 and the rotor 1 in rotation.
  • a ring 13 of ferromagnetic material is mounted on the spraying member 10, so that an attraction force F 2 due to the magnet 41 is exerted on the ring 13, which firmly plates the surfaces 10A and 1A against each other, while an air gap E is formed between the ring 13 and the support 4.
  • the spraying member 10 comprises two bowls 100 and 200, of different diameters and geometries.
  • the outer bowl 100 is provided with a spray edge 101, a product distribution surface 102 and an outer surface 103.
  • the injector 5 brings the liquid spray to the bowl 100.
  • the bowl 100 is fixed an internal bowl 200, by screwing, with a hub 6.
  • the inner bowl 200 is immobilized on the hub 6 by any appropriate means, for example by gluing.
  • the hub 6 is screwed, thanks to a thread 64, into a threaded portion 104 of the bowl 10.
  • the two bowls 100 and 200 are thus assembled by being removable with respect to one another.
  • a male centering cone is provided on the bowl 200, while a corresponding female centering cone is provided on the bowl 100. This ensures a permanent relative centering of these bowls.
  • the bowl 200 can be fixed on the bowl 100 by other mechanical means, for example in force.
  • the hub 6 is provided with studs 61 between which there are openings 62 in the form of beans, for the passage of the coating product of the injector 5 to the inner surface 102 of the bowl 100.
  • the bowl 200 is provided with a spray edge 201, a product distribution surface 202 and an outer surface 203.
  • D1 0 1 and D 2 denote respectively the diameters of the edges 101 and 201.
  • the value of D 101 is slightly greater than that of D 2 O- More precisely D 1O i is greater than X to Y% with respect to D201.
  • D 1O i may be 63.5 mm, while D 20 i is 65 mm.
  • An insert 8 mounted in the bowl 200 defines an orifice 81 aligned on the central axis X-10-X'10 of the member 10 which forms an axis of symmetry of the surfaces 102, 103, 202 and 203.
  • the insert 8 protrudes from the rear face 206 of the bowl 200 intended to be turned towards the injector 5.
  • the portion 82 of the insert 8, which protrudes with respect to the surface 206 has a convergent inner surface in direction of the ridge 201 and can be considered as a funnel.
  • the portion 82 of the insert 8 projecting from the surface 206 may be in the form of "inverted funnel", with a diverging outer surface in the direction of the ridge 201 and a cylindrical inner surface with a circular base.
  • the insert 8 may not protrude from the surface 206.
  • the three forms of the insert 8 contemplated above make it possible to influence the distribution of the product between the flow paths formed by the surfaces 102 and 202 of the two bowls. Different types of bowls can therefore be provided, with inserts 8 of different geometry.
  • the edges 101 and 201 are not in the same plane, they are offset axially with respect to each other, the edge 101 being set back relative to the edge 201, in order to avoid as much as possible jets of pulverized product recombine, that is to say, mingle with each other.
  • indented is meant that the edge 101 is further away from the objects O than the edge 201. It is necessary to separate as much as possible the jets of coating product from the edges 101 and 201. Indeed, if the These jets recombine, so the size of the droplets increases, while a uniform spray requires droplets as fine as possible.
  • the distance di of withdrawal of the edge 101 with respect to the edge 201 may be 10 millimeters for a bowl whose edge 201 has a diameter of the order of 65 mm.
  • the distance di represents more than 1% of the diameter D 201 of the edge 201, which ensures a good separation of the product jets without lengthening axially the bowl too much.
  • the greater the shrinkage the less jets of sprayed product recombine.
  • the inner surface 102 of the bowl 100 and the outer surface 203 of the bowl 200 define a volume VL between them.
  • the distance measured between the two bowls 100 and 200 is perpendicular to a median M between the generatrices of the surfaces 102 and 203, that is to say the thickness of the volume ⁇ .
  • the thickness e is equal to the distance between the inner surface 102 and the outer surface 203.
  • the thickness ea for a given position along the axis Xio-X ' 1 0, the same value regardless of the angular sector around the axis Xio-X'io in which it is measured, which is visible in Figure 4 where the thickness e is uniform.
  • the thickness e determines the passage section S of the volume V 1 which has an area equal to:
  • the value of the thickness e measured at the level of the product entry zone in the volume V 1 is noted at the height of the rear face 63 of the assembly consisting of the bowl 200, of the upper part of the hub 6. and of the distributor 8.
  • Note e 2 the value of the thickness e measured at the edge 101 of the bowl 100.
  • the thickness e decreases continuously from ei to e 2 , e 2 being less than ei.
  • ⁇ i can be 2 mm while e 2 is a few tenths of a millimeter.
  • the decrease in the value of e between the values e 1 and e 2 has the effect that the section S of product passage in volume V 1 , which is annular as shown in FIG. 4, has an area which decreases between the zone d input and the output area of this volume.
  • the decrease of the value of the thickness e between the values e 1 and e 2 can take place non-continuously, this thickness being able, for example, to be constant over a part of the volume Vi.
  • the spraying member 10 rotates about the axis X 1 -XV
  • the two bowls 100 and 200 are integral and rotate at the same time, at the same speed.
  • the coating product is fed through the injector 5, taps against the rear face 63 of the assembly consisting of the bowl 200, the upper part of the hub 6 and possibly the projecting portion 82 of the distributor 8, and spreads on the inner surface of the bowl 100, to the spraying edge 101 where the liquid splits into fine droplets.
  • a fraction of the coating product supplied by the injector 5 continues its path directly into the distributor 8 through the orifice 81.
  • This fraction is defined both by the geometry of the distributor 8, in particular the diameter inside of the orifice 81, and by the flow of coating product.
  • This fraction taps against the rear face 73 of the distributor 7 and spreads on the inner surface of the bowl 200, to the spray edge 201 where the liquid splits into fine droplets.
  • the diameter D 8 i of the orifice 81 is less than or equal to the inside diameter
  • the injector 5 is supplied with air-solvent trains, sized with a flow rate to fill the volume Vi.
  • the air and solvent trains follow the same paths as the coating product, from the injector 5 to the edges 101 and 201.
  • the decrease of the gap between bowls 100 and 200 ei to e 2 has the effect of compensating for a decrease in pressure due to the centrifugal force and slightly compressing the rinsing liquid to allow the feeding of the volume
  • the injection of cleaning product can properly clean not only the internal surfaces 102 and 202, but also the surface 203.
  • the air-solvent trains can create a foam, by air dispersion in a liquid, which increases the efficiency of cleaning.
  • the cleaning product is itself a foaming product. In this case, the compression effect obtained due to the decrease in the thickness e is exerted on the air bubbles present in the dispersion or in the foaming product, which gives rise to a "scraping" effect of the bubbles. air on surfaces 102 and 203.
  • the bowl 100 is pierced with a series of orifices 150 which each extend between an inlet 150A located on the surface 103 of the bowl 100 and an outlet 150B located on the surface 102.
  • the orifices 150 are cylindrical, each centered on one axis X150 oblique with respect to the Xio-X'i axis
  • the orifices 150 make it possible to generate an air inlet from the outside towards the volume Vi. These holes are easy to achieve because they can be drilled in the bowl 100 before mounting the bowl 200.
  • the invention has been shown with a spraying member 10 having two bowls. It is also applicable with a stack of three or more successive bowls connected in series ended by mounting a dispenser on the innermost bowl.
  • volumes ⁇ ⁇ , ..., V nI may be defined by analogy with the embodiment shown, with different geometries, each volume having a decreasing radial thickness, from its entry zone to its exit zone. .
  • the invention has been shown with a spraying member 10 attached to the rotor 1 by magnetic effect. It is also applicable with a spraying member fixed by any other means, in particular screwed.
  • the invention has been shown with bowls 100 and 200 removable. It is also applicable with an organ whose bowls are not removable, for example monoblocks.
  • the invention has been shown with a bowl 100 whose edge 101 has a diameter D 101 greater than the diameter D 2 oi of the edge 201 of the bowl 200.
  • the invention is however applicable to the case where the diameter D 1O i is equal to or slightly less than the diameter D 201 , which is possible because of the withdrawal di of the edge 101 relative to the edge 201.

Landscapes

  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Spray Control Apparatus (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

This spraying member (10) comprises at least one outer bowl (100) and one inner bowl (200), each bowl defining a spraying edge (101, 201), one inner spreading surface (102, 202) and one outer surface (103, 203). The inner bowl (200) is positioned radially on the inside of the outer bowl (100), whereas a volume (V1) defined between the inner surface (102) of the outer bowl (100) and the outer surface (203) of the inner bowl (200) has a thickness (e), corresponding to the distance between this inner surface (102) and this outer surface (203), decreasing between a first value (e1), taken at the zone for inlet of cleaning product into the volume (V1), and a second value (e2), taken at the spraying edge (101) of the outer bowl (100). The spraying member (10) comprises means (68) for the central supply of the inner spreading surfaces (102, 202).

Description

ORGANE DE PULVERISATION, DISPOSITIF DE PROJECTION SPRAYING DEVICE, PROJECTION DEVICE
COMPORTANT UN TEL ORGANE, INSTALLATION DE PROJECTIONCOMPRISING SUCH AN ORGAN, PROJECTION FACILITY
ET METHODE DE NETTOYAGE D'UN TEL ORGANEAND METHOD FOR CLEANING SUCH AN ORGAN
La présente invention concerne un organe de pulvérisation pour un projecteur rotatif de produit de revêtement, ainsi qu'un dispositif de projection équipé d'un tel organe de pulvérisation et une installation de projection de produit de revêtement incorporant un tel dispositif. L'invention concerne également une méthode de nettoyage d'un tel organe de pulvérisation. La pulvérisation conventionnelle par bols tournants est utilisée pour l'application sur des objets à revêtir, tels que des carrosseries de véhicules automobiles, des apprêts, de la première couche de base et des vernis, avec des débits de peinture compris entre 100 et 500cc/min. Afin de diminuer les investissements liés à l'installation et au fonctionnement des lignes de peinturage, le marché automobile tend à réduire leur longueur ainsi que le nombre de robots de pulvérisation installés sur ces lignes. Ainsi, les pulvérisateurs destinés à être montés sur ces robots doivent être capables de pulvériser des produits de revêtement avec des débits élevés.The present invention relates to a spraying member for a rotary projector coating product, and a projection device equipped with such a spraying member and a coating product spraying installation incorporating such a device. The invention also relates to a method of cleaning such a spraying member. Conventional rotating bowl spray is used for application to objects to be coated, such as motor vehicle bodies, primers, first coat and varnishes, with paint rates between 100 and 500cc / min. In order to reduce the investments related to the installation and operation of painting lines, the automobile market tends to reduce their length as well as the number of spraying robots installed on these lines. Thus, the sprayers to be mounted on these robots must be able to spray coating products with high flow rates.
Il est connu de l'art antérieur des empilements de bols en vue d'augmenter le débit de pulvérisation de produits liquides. Par exemple, FR-A- 1363681 décrit une installation de pulvérisation de produit liquide constituée d'un organe de pulvérisation de liquide sous forme de jet, d'au moins un organe rotatif de pulvérisation à arête disposé à sa suite, et de moyens permettant de faire varier la quantité de produit à pulvérisée distribuée à l'organe rotatif de pulvérisation, en faisant varier la distance entre la buse et le ou les disques. Pour pallier le fait que la capacité de l'installation est généralement limitée par la capacité maximum de l'organe de pulvérisation à arête, alors que la buse de pulvérisation permettrait une bien plus grande capacité de travail, F R-A- 1363681 propose d'utiliser deux ou plusieurs organes de pulvérisation à arête. Un problème technique posé par les organes de pulvérisation « multi- bols » est le nettoyage de la surface externe du ou des bols internes, salie pendant la pulvérisation où la rotation de l'organe crée une dépression entre les bols qui entraîne le dépôt de gouttelettes sur une surface externe. Cette surface est difficilement atteignable par le solvant lors du rinçage.Stack stacks are known from the prior art to increase the spraying rate of liquid products. For example, FR-A-1363681 discloses a liquid product spraying installation consisting of a jet liquid spraying member, at least one rotary spindle rotary member arranged thereafter, and means for varying the amount of sprayed product dispensed to the rotary spray member by varying the distance between the nozzle and the disk (s). To overcome the fact that the capacity of the installation is generally limited by the maximum capacity of the spraying member with edge, while the spray nozzle would allow a much greater working capacity, F RA-1363681 proposes to use two or more edge sprayers. A technical problem posed by the "multi-bols" spraying members is the cleaning of the outer surface of the internal bowl (s), soiled during spraying, where the rotation of the member creates a depression between the bowls which causes the deposition of droplets on an outer surface. This surface is difficult to reach by the solvent during rinsing.
FR-A-2 170 940 décrit un organe de pulvérisation destiné à pulvériser deux produits distincts avec deux moyens d'alimentation distincts. De tels moyens d'alimentation ne permettent cependant pas d'alimenter simultanément les deux surfaces de répartition de l'organe de pulvérisation. En outre, la construction d'un tel organe de pulvérisation est relativement complexe et préjudiciable à l'équilibre et à la compacité de cet organe.FR-A-2 170 940 discloses a spray member for spraying two separate products with two separate feed means. Such supply means, however, do not allow to simultaneously feed the two distribution surfaces of the spray member. In addition, the construction of such a spraying member is relatively complex and detrimental to the balance and compactness of this organ.
US-A-5 894 993 décrit un organe de pulvérisation comprenant une seule surface interne de répartition de produit de revêtement et un guide annulaire destiné à guider du solvant pour nettoyer la surface externe de l'organe de pulvérisation. Cependant, le débit de produit de revêtement pulvérisé par un tel organe de pulvérisation est relativement limité, car il n'y a qu'une arête de pulvérisation. C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un organe de pulvérisation multi-bols équilibré et compact dont la géométrie est telle que le nettoyage de la surface externe de son bol interne est facilité.US-A-5,894,993 discloses a spraying member comprising a single internal coating product distribution surface and an annular guide for guiding solvent to clean the outer surface of the spraying member. However, the flow of coating material sprayed by such a spraying member is relatively limited because there is only one spray edge. It is these drawbacks that the invention intends to remedy more particularly by providing a compact and compact multi-bowl spraying device whose geometry is such that the cleaning of the external surface of its internal bowl is facilitated.
A cet effet, l'invention a pour objet un organe de pulvérisation pour un projecteur rotatif de produit de revêtement, ledit organe de pulvérisation comprenant au moins un bol externe et un bol interne, chaque bol définissant une arête de pulvérisation, une surface interne de répartition et une surface externe le bol interne est étant disposé radialement à l'intérieur du bol externe, alors et en ce qu'un volume défini entre la surface interne du bol externe et la surface externe du bol interne a une épaisseur décroissante entre une première valeur, prise au niveau d'une zone d'entrée de produit de nettoyage dans le volume, et une deuxième valeur, prise au niveau de l'arête de pulvérisation du bol externe, l'organe de pulvérisation étant caractérisé en ce qu'il comprend des moyens d'alimentation centrale des surfaces internes de répartition des bols. Grâce à l'invention, le volume défini entre la surface interne du bol externe et la surface externe du bol interne a une section de passage qui se rétrécit dans le sens de progression du produit de nettoyage en direction de l'arête de pulvérisation du bol externe. En effet, son épaisseur, qui correspond à la distance, prise perpendiculairement à une médiane de ce volume, entre la surface interne du bol externe et la surface externe du bol interne, permet de contrôler la répartition du produit de nettoyage dans ce volume. Sous l'effet de la force centrifuge, la vitesse du produit augmente entre les bols en même temps que le diamètre des bols. De ce fait, la pression du produit entre les bols a tendance à diminuer, alors que le diamètre des bols augmente, c'est-à-dire dans le sens d'écoulement du produit. Pour maintenir un niveau suffisant de pression du produit jusqu'à la sortie du volume, la section de passage est à diminuer, ce que prévoit l'invention. Ainsi, il est possible de gaver ce volume en produit de nettoyage ou avec un mélange de produit de nettoyage et d'air, ce qui permet au produit de nettoyage de lécher à la fois la surface interne du bol externe et la surface externe du bol interne. Le nettoyage de ces surfaces internes et externes est ainsi optimisé. De plus, les moyens d'alimentation centrale permettent d'alimenter simultanément les deux surfaces internes de répartition avec une construction compacte et équilibrée de l'organe de pulvérisationTo this end, the subject of the invention is a spraying member for a rotary coating product projector, said spraying member comprising at least one external bowl and an internal bowl, each bowl defining a spray edge, an internal surface of distribution and an outer surface the inner bowl is being arranged radially inside the outer bowl, then and in that a volume defined between the inner surface of the outer bowl and the outer surface of the inner bowl has a decreasing thickness between a first value, taken at a cleaning product inlet area in the volume, and a second value, taken at the spray edge of the outer bowl, the spray member being characterized in that comprises central supply means of the internal surfaces of distribution of the bowls. Thanks to the invention, the volume defined between the inner surface of the outer bowl and the outer surface of the inner bowl has a passage section which narrows in the direction of progression of the cleaning product towards the spraying edge of the bowl. external. Indeed, its thickness, which corresponds to the distance, taken perpendicularly to a median of this volume , between the inner surface of the outer bowl and the outer surface of the inner bowl, allows to control the distribution of the cleaning product in this volume. Under the effect of the centrifugal force, the speed of the product increases between the bowls at the same time as the diameter of the bowls. As a result, the pressure of the product between the bowls tends to decrease as the diameter of the bowls increases, i.e. in the direction of flow of the product. To maintain a sufficient level of pressure of the product to the output of the volume, the passage section is to be reduced, which provides the invention. Thus, it is possible to fill this volume with a cleaning product or with a mixture of cleaning product and air, which allows the cleaning product to lick both the inner surface of the outer bowl and the outer surface of the bowl. internal. The cleaning of these internal and external surfaces is thus optimized. In addition, the central supply means can simultaneously feed the two internal distribution surfaces with a compact and balanced construction of the spray member
Selon des aspects avantageux mais non obligatoires de l'invention, un tel organe de pulvérisation peut incorporer une ou plusieurs des caractéristiques suivantes :According to advantageous but non-obligatory aspects of the invention, such a spraying member may incorporate one or more of the following features:
- Ces moyens d'alimentation centrale comprennent un répartiteur pourvu d'un orifice aligné sur un axe de symétrie des surfaces internes et externes des bols, cet orifice étant destiné à l'alimentation en produit de revêtement de la surface interne de répartition du bol interneThese central supply means comprise a distributor provided with an orifice aligned on an axis of symmetry of the internal and external surfaces of the bowls, this orifice being intended for the supply of coating product of the internal distribution surface of the internal bowl.
- Les moyens d'alimentation comprennent un déflecteur monté dans le bol interne en regard d'une partie centrale de la surface interne de la répartition - Le rapport de la deuxième valeur de l'épaisseur du volume sur la première valeur de cette épaisseur est inférieur à 0,9, de préférence à 0,5, de préférence encore de l'ordre 0,4,- The supply means comprise a deflector mounted in the inner bowl facing a central portion of the inner surface of the distribution - the ratio of the second value of the volume thickness on the first value of this thickness is lower at 0.9, preferably at 0.5, more preferably at about 0.4,
- L'arête de pulvérisation du bol externe est axialement en retrait par rapport à l'arête de pulvérisation du bol interne, d'une distance supérieure à 1 % du diamètre de l'arête de pulvérisation du bol interne.- The spraying edge of the outer bowl is axially indented with respect to the spraying edge of the inner bowl, by a distance greater than 1% of the diameter of the spraying edge of the internal bowl.
- Des orifices d'entrée d'air vers le volume précité peuvent être prévus sur le bol externe. L'invention concerne également un dispositif de projection de produit de revêtement qui comprend un organe de pulvérisation tel que mentionné ci- dessus ainsi que des moyens d'entraînement de cet organe en rotation et des moyens d'alimentation de cet organe en produit de revêtement. Dans le cas où l'organe de pulvérisation comprend un répartiteur pourvu d'un orifice, comme mentionné ci-dessus, le diamètre de cet orifice est avantageusement inférieur ou égal au diamètre interne de l'extrémité aval des moyens d'alimentation en produit de revêtement.- Air inlet ports to the aforementioned volume may be provided on the outer bowl. The invention also relates to a coating product spraying device which comprises a spraying member as mentioned above as well as means for driving this rotating member and means for supplying this member with a coating product. . In the case where the spraying member comprises a splitter provided with an orifice, as mentioned above, the diameter of this orifice is advantageously less than or equal to the internal diameter of the downstream end of the feed means of the feed product. coating.
L'invention concerne également une installation de projection de produit de revêtement qui comprend, entre autres, au moins un dispositif de projection tel que mentionné ci-dessus.The invention also relates to a coating product projection installation which comprises, inter alia, at least one projection device as mentioned above.
Enfin, l'invention concerne une méthode de nettoyage d'un organe de pulvérisation tel que mentionné ci-dessus, cette méthode comprenant une étape consistant à gaver le volume défini entre la surface interne du bol externe et la surface externe du bol interne en produit de nettoyage et/ou en air.Finally, the invention relates to a method of cleaning a spraying member as mentioned above, this method comprising a step of gaving the volume defined between the inner surface of the outer bowl and the outer surface of the inner bowl product cleaning and / or air.
Avantageusement, on utilise pour ce gavage un produit de nettoyage ou un mélange de produits de nettoyage et d'air moussant.Advantageously, it uses for this gavage a cleaning product or a mixture of cleaning products and foaming air.
L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :The invention will be better understood and other advantages thereof will appear more clearly in the light of the description which follows, given solely by way of example and with reference to the appended drawings in which:
- la figure 1 est une coupe longitudinale de principe d'un projecteur de produit de revêtement conforme à l'invention utilisé dans une installation conforme à l'invention et incorporant un organe de pulvérisation conforme à l'invention ;- Figure 1 is a longitudinal sectional view of a coating product projector according to the invention used in an installation according to the invention and incorporating a spray member according to the invention;
- la figure 2 est une coupe axiale de l'organe de pulvérisation de la figure 1 ;- Figure 2 is an axial section of the spray member of Figure 1;
- la figure 3 est une vue en perspective, avec arrachement partiel, de l'organe de la figure 2 - la figure 4 est une section selon la ligne IV-IV à la figure 2FIG. 3 is a perspective view, partially cut away, of the member of FIG. 2; FIG. 4 is a section along the line IV-IV in FIG.
- la figure 5 est une vue à plus grande échelle du détail V à la figure 2 et - la figure 6 est une vue analogue à la figure 5 pour un second mode de réalisation de l'invention.FIG. 5 is a view on a larger scale of the detail V in FIG. 2 and - Figure 6 is a view similar to Figure 5 for a second embodiment of the invention.
Le projecteur P représenté à la figure 1 est alimenté en produit de revêtement à partir d'une ou plusieurs sources non représentées et déplacé, par exemple avec un mouvement essentiellement vertical représenté par la double flèche F1 , en regard d'objets O à revêtir au sein d'une installation I de revêtement de ces objets. Le projecteur comprend une turbine à air dont seul le rotor 1 est visible sur la figure 1 , ce rotor étant entraîné en rotation autour d'un axe XrXVThe projector P shown in Figure 1 is fed with coating material from one or more sources not shown and moved, for example with a substantially vertical movement represented by the double arrow F 1 , facing objects O to be coated in an installation I coating these objects. The projector comprises an air turbine of which only the rotor 1 is visible in FIG. 1, this rotor being rotated about an axis XrXV
Un corps 2, fixe par rapport à l'axe entoure le rotor 1 et est lui- même isolé de l'extérieur par un capot 3. Un support annulaire 4 en matériau magnétique, par exemple en acier inox magnétique, est monté sur la face avant 21 du corps 2, ce support étant pourvu d'une gorge annulaire centrée sur l'axe XrX'i et dans laquelle est disposé un aimant annulaire 41. Un injecteur 5 de produit de revêtement est aligné sur l'axe Xi-X'i. Un organe de pulvérisation 10 est monté sur projecteur P et forme une surface tronconique 10A destinée à coopérer avec une surface tronconique 1A du rotor 1 pour solidariser en rotation l'organe de pulvérisation 10 et le rotor 1. Pour garantir un appui efficace des surfaces 10A et 1A l'une contre l'autre et une immobilisation relative à la façon d'un cône Morse, une bague 13 en matériau ferromagnétique est montée sur l'organe de pulvérisation 10, de telle sorte qu'un effort d'attraction F2 dû à l'aimant 41 s'exerce sur la bague 13, ce qui plaque fermement les surfaces 10A et 1A l'une contre l'autre, alors qu'un entrefer E est ménagé entre la bague 13 et le support 4. On fait ici application de l'enseignement technique de FR-A-2887472. L'organe de pulvérisation 10 comprend deux bols 100 et 200, de diamètres et de géométries différents.A body 2, fixed with respect to the axis surrounds the rotor 1 and is itself isolated from the outside by a cover 3. An annular support 4 made of magnetic material, for example magnetic stainless steel, is mounted on the front face 21 of the body 2, this support being provided with an annular groove centered on the axis XrX'i and in which is disposed an annular magnet 41. A coating material injector 5 is aligned on the axis Xi-X'i. A spraying member 10 is mounted on a projector P and forms a frustoconical surface 10A intended to cooperate with a frustoconical surface 1A of the rotor 1 to rotate the spraying member 10 and the rotor 1 in rotation. To guarantee effective support of the surfaces 10A and 1A against each other and a relative immobilization in the manner of a Morse cone, a ring 13 of ferromagnetic material is mounted on the spraying member 10, so that an attraction force F 2 due to the magnet 41 is exerted on the ring 13, which firmly plates the surfaces 10A and 1A against each other, while an air gap E is formed between the ring 13 and the support 4. It is made here application of the technical teaching of FR-A-2887472. The spraying member 10 comprises two bowls 100 and 200, of different diameters and geometries.
Le bol externe 100 est pourvu d'une arête de pulvérisation 101 , d'une surface de répartition du produit 102 et d'une surface externe 103. L'injecteur 5 amène le produit liquide à pulvériser au bol 100. Dans le bol 100 est fixé un bol interne 200, par vissage, grâce à un moyeu 6. Le bol interne 200 est immobilisé sur le moyeu 6 par tout moyen approprié, par exemple par collage. Ensuite, le moyeu 6 est vissé, grâce à un filetage 64, dans une partie taraudée 104 du bol 10. Les deux bols 100 et 200 sont donc assemblés en étant démontables l'un par rapport à l'autre. Un cône de centrage mâle est prévu sur le bol 200, alors qu'un cône de centrage femelle correspondant est prévu sur le bol 100. Ceci permet d'assurer un centrage relatif permanent de ces bols. Le bol 200 peut être fixé sur le bol 100 par d'autres moyens mécaniques, par exemple en force.The outer bowl 100 is provided with a spray edge 101, a product distribution surface 102 and an outer surface 103. The injector 5 brings the liquid spray to the bowl 100. In the bowl 100 is fixed an internal bowl 200, by screwing, with a hub 6. The inner bowl 200 is immobilized on the hub 6 by any appropriate means, for example by gluing. Then, the hub 6 is screwed, thanks to a thread 64, into a threaded portion 104 of the bowl 10. The two bowls 100 and 200 are thus assembled by being removable with respect to one another. A male centering cone is provided on the bowl 200, while a corresponding female centering cone is provided on the bowl 100. This ensures a permanent relative centering of these bowls. The bowl 200 can be fixed on the bowl 100 by other mechanical means, for example in force.
Le moyeu 6 est pourvu de plots 61 entre lesquels sont ménagées des ouvertures 62 ici en forme de haricots, pour le passage du produit de revêtement de l'injecteur 5 vers la surface interne 102 du bol 100. Le bol 200 est pourvu d'une arête de pulvérisation 201 , d'une surface de répartition du produit 202 et d'une surface externe 203.The hub 6 is provided with studs 61 between which there are openings 62 in the form of beans, for the passage of the coating product of the injector 5 to the inner surface 102 of the bowl 100. The bowl 200 is provided with a spray edge 201, a product distribution surface 202 and an outer surface 203.
On note respectivement D101 et D2oi les diamètres des arêtes 101 et 201. La valeur de D101 est légèrement supérieure à celle de D2oi- Plus précisément D1Oi est supérieur de X à Y % par rapport à D201. Par exemple D1Oi peut valoir 63,5 mm, alors que D20i vaut 65 mm.D1 0 1 and D 2 denote respectively the diameters of the edges 101 and 201. The value of D 101 is slightly greater than that of D 2 O- More precisely D 1O i is greater than X to Y% with respect to D201. For example D 1O i may be 63.5 mm, while D 20 i is 65 mm.
Sur le bol 200 est fixé par vissage un distributeur/déflecteur 7. Ce distributeur 7 pourrait être fixé par d'autres moyens mécaniques. Le distributeurOn the bowl 200 is fixed by screwing a distributor / baffle 7. This distributor 7 could be fixed by other mechanical means. The distributor
7 est pourvu de plots 71 entre lesquels sont ménagées des ouvertures 72, ici en forme de haricots, pour le passage du produit de revêtement vers la surface interne 202 du bol 200.7 is provided with pads 71 between which are formed openings 72, here in the form of beans, for the passage of the coating product to the inner surface 202 of the bowl 200.
Un insert 8 monté dans le bol 200 définit un orifice 81 aligné sur l'axe central X-io-X'io de l'organe 10 qui forme un axe de symétrie des surfaces 102, 103, 202 et 203.An insert 8 mounted in the bowl 200 defines an orifice 81 aligned on the central axis X-10-X'10 of the member 10 which forms an axis of symmetry of the surfaces 102, 103, 202 and 203.
L'insert 8 fait saillie par rapport à la face arrière 206 du bol 200 destinée à être tournée vers l'injecteur 5. La partie 82 de l'insert 8, qui fait saillie par rapport à la surface 206 a une surface interne convergente en direction de l'arête 201 et peut être considérée comme un entonnoir.The insert 8 protrudes from the rear face 206 of the bowl 200 intended to be turned towards the injector 5. The portion 82 of the insert 8, which protrudes with respect to the surface 206 has a convergent inner surface in direction of the ridge 201 and can be considered as a funnel.
En variante, comme représenté à la figure 6, la partie 82 de l'insert 8 en saillie par rapport à la surface 206 peut être en forme « d'entonnoir inversé », avec une surface externe divergente en direction de l'arête 201 et une surface interne cylindrique à base circulaire.Alternatively, as shown in FIG. 6, the portion 82 of the insert 8 projecting from the surface 206 may be in the form of "inverted funnel", with a diverging outer surface in the direction of the ridge 201 and a cylindrical inner surface with a circular base.
Selon une autre variante qui n'est pas représentée, l'insert 8 peut ne pas dépasser de la surface 206. Les trois formes de l'insert 8 envisagées ci-dessus permettent d'influer sur la répartition du produit entre les trajets d'écoulement formés par les surfaces 102 et 202 des deux bols. Différents types de bols peuvent donc être prévus, avec des inserts 8 de géométrie différentes. Les arêtes 101 et 201 ne sont pas dans le même plan, elles sont décalées axialement l'une par rapport à l'autre, l'arête 101 étant en retrait par rapport à l'arête 201 , afin d'éviter au maximum que les jets de produit pulvérisé se recombinent, c'est-à-dire se mêlent l'un à l'autre. Par « en retrait », on entend que l'arête 101 est plus éloignée des objets O que l'arête 201. Il convient de séparer autant que possible les jets de produit de revêtement issus des arêtes 101 et 201. En effet, si les jets se recombinent, alors la taille des gouttelettes augmente, alors qu'une pulvérisation homogène demande des gouttelettes aussi fines que possible.According to another variant which is not shown, the insert 8 may not protrude from the surface 206. The three forms of the insert 8 contemplated above make it possible to influence the distribution of the product between the flow paths formed by the surfaces 102 and 202 of the two bowls. Different types of bowls can therefore be provided, with inserts 8 of different geometry. The edges 101 and 201 are not in the same plane, they are offset axially with respect to each other, the edge 101 being set back relative to the edge 201, in order to avoid as much as possible jets of pulverized product recombine, that is to say, mingle with each other. By "indented" is meant that the edge 101 is further away from the objects O than the edge 201. It is necessary to separate as much as possible the jets of coating product from the edges 101 and 201. Indeed, if the These jets recombine, so the size of the droplets increases, while a uniform spray requires droplets as fine as possible.
Pour exemple, la distance di de retrait de l'arête 101 par rapport à l'arête 201 peut être de 10 millimètres pour un bol dont l'arête 201 a un diamètre de l'ordre de 65 mm. En pratique, la distance di représente plus de 1 % du diamètre D201 de l'arête 201 , ce qui assure une bonne séparation des jets de produit sans allonger axialement le bol de façon trop importante. Plus ce retrait est important, moins les jets de produit pulvérisé se recombinent. La surface interne 102 du bol 100 et la surface externe 203 du bol 200 définissent entre elles un volume VLFor example, the distance di of withdrawal of the edge 101 with respect to the edge 201 may be 10 millimeters for a bowl whose edge 201 has a diameter of the order of 65 mm. In practice, the distance di represents more than 1% of the diameter D 201 of the edge 201, which ensures a good separation of the product jets without lengthening axially the bowl too much. The greater the shrinkage, the less jets of sprayed product recombine. The inner surface 102 of the bowl 100 and the outer surface 203 of the bowl 200 define a volume VL between them.
On note e l'écart mesuré entre les deux bols 100 et 200 perpendiculairement à une médiane M entre les génératrices des surfaces 102 et 203, c'est-à-dire l'épaisseur du volume \Λ. L'épaisseur e est égale à la distance, entre la surface interne 102 et la surface externe 203. Compte tenu de la géométrie des surfaces 102 et 203 qui sont symétriques par rapport à l'axeThe distance measured between the two bowls 100 and 200 is perpendicular to a median M between the generatrices of the surfaces 102 and 203, that is to say the thickness of the volume Λ. The thickness e is equal to the distance between the inner surface 102 and the outer surface 203. Given the geometry of the surfaces 102 and 203 which are symmetrical with respect to the axis
Xio-X'10, l'épaisseur e a, pour une position donnée le long de l'axe Xio-X'10, la même valeur quel que soit le secteur angulaire autour de l'axe Xio-X'io dans lequel elle est mesurée, ce qui est visible à la figure 4 où l'épaisseur e est uniforme. L'épaisseur e détermine la section S de passage du volume V1 qui a une aire égale à :Xio-X'10, the thickness ea, for a given position along the axis Xio-X ' 1 0, the same value regardless of the angular sector around the axis Xio-X'io in which it is measured, which is visible in Figure 4 where the thickness e is uniform. The thickness e determines the passage section S of the volume V 1 which has an area equal to:
S = π x e x (rio2 + ^03) où r-102 et r103 sont respectivement les rayons des surfaces 102 et 203 qui sont circulaires.S = π xex (rio2 + ^ 03) where r-102 and r 103 are respectively the radii of the surfaces 102 and 203 which are circular.
On note ei la valeur de l'épaisseur e mesurée au niveau de la zone d'entrée du produit dans le volume V1, à hauteur de la face arrière 63 de l'ensemble constitué du bol 200, de la partie supérieure du moyeu 6 et du répartiteur 8. On note e2 la valeur de l'épaisseur e mesurée au niveau de l'arête 101 du bol 100. L'épaisseur e diminue de manière continue de ei à e2, e2 étant inférieure à ei. A titre d'exemple βi peut valoir 2 mm alors que e2 vaut quelques dixièmes de millimètre. La décroissance de la valeur de e entre les valeurs ei et e2 a pour effet que la section S de passage de produit dans le volume V1, qui est annulaire comme le montre la figure 4, a une aire qui décroît entre la zone d'entrée et la zone de sortie de ce volume.The value of the thickness e measured at the level of the product entry zone in the volume V 1 is noted at the height of the rear face 63 of the assembly consisting of the bowl 200, of the upper part of the hub 6. and of the distributor 8. Note e 2 the value of the thickness e measured at the edge 101 of the bowl 100. The thickness e decreases continuously from ei to e 2 , e 2 being less than ei. By way of example, β i can be 2 mm while e 2 is a few tenths of a millimeter. The decrease in the value of e between the values e 1 and e 2 has the effect that the section S of product passage in volume V 1 , which is annular as shown in FIG. 4, has an area which decreases between the zone d input and the output area of this volume.
En variante, la décroissance de la valeur de l'épaisseur e entre les valeurs ei et e2 peut avoir lieu de façon non continue, cette épaisseur pouvant, par exemple, être constante sur une partie du volume Vi.As a variant, the decrease of the value of the thickness e between the values e 1 and e 2 can take place non-continuously, this thickness being able, for example, to be constant over a part of the volume Vi.
En pratique, les valeurs e-i et e2 sont choisies de telle sorte que leur rapport R = ei/θ2 est inférieur à 0,9, de préférence à 0,5. Des résultats tout à fait satisfaisants ont été obtenus avec R de l'ordre de 0,4. Pendant la pulvérisation, l'organe de pulvérisation 10 tourne autour de l'axe X1-XV Les deux bols 100 et 200 sont solidaires et tournent en même temps, à la même vitesse. Le produit de revêtement est amené par l'injecteur 5, tape contre la face arrière 63 de l'ensemble constitué du bol 200, de la partie supérieure du moyeu 6 et éventuellement de la partie en saillie 82 du répartiteur 8, et s'étale sur la surface interne du bol 100, jusqu'à l'arête de pulvérisation 101 où le liquide se divise en fines gouttelettes. Au passage, les turbulences dans le volume V1 et la dépression, créée dans ce volume par l'accélération du produit entre les deux bols sous l'effet de la force centrifuge, entraînent des gouttelettes de produit de revêtement qui viennent se déposer sur et salir sensiblement toute la surface 203 jusqu'à l'arête 201.In practice, the values ei and e 2 are chosen such that their ratio R = ei / θ 2 is less than 0.9, preferably 0.5. Quite satisfactory results have been obtained with R of the order of 0.4. During spraying, the spraying member 10 rotates about the axis X 1 -XV The two bowls 100 and 200 are integral and rotate at the same time, at the same speed. The coating product is fed through the injector 5, taps against the rear face 63 of the assembly consisting of the bowl 200, the upper part of the hub 6 and possibly the projecting portion 82 of the distributor 8, and spreads on the inner surface of the bowl 100, to the spraying edge 101 where the liquid splits into fine droplets. In passing, the turbulence in the volume V 1 and the depression, created in this volume by the acceleration of the product between the two bowls under the effect of the centrifugal force, cause droplets of coating product which are deposited on and substantially soil the entire surface 203 to the ridge 201.
Une fraction du produit de revêtement amenée par l'injecteur 5 continue son chemin directement dans le répartiteur 8 à travers l'orifice 81. Cette fraction est définie à la fois par la géométrie du répartiteur 8, notamment le diamètre intérieur de l'orifice 81 , et par le débit de produit de revêtement. Cette fraction tape contre la face arrière 73 du distributeur 7 et s'étale sur la surface interne du bol 200, jusqu'à l'arête de pulvérisation 201 où le liquide se divise en fines gouttelettes. Le diamètre D8i de l'orifice 81 est inférieur ou égal au diamètre intérieurA fraction of the coating product supplied by the injector 5 continues its path directly into the distributor 8 through the orifice 81. This fraction is defined both by the geometry of the distributor 8, in particular the diameter inside of the orifice 81, and by the flow of coating product. This fraction taps against the rear face 73 of the distributor 7 and spreads on the inner surface of the bowl 200, to the spray edge 201 where the liquid splits into fine droplets. The diameter D 8 i of the orifice 81 is less than or equal to the inside diameter
D51 de la partie terminale aval 51 de l'injecteur 5. Ceci a pour effet d'assurer qu'une partie au moins du produit sortant de l'injecteur est dirigée vers le volume Vi. Il est possible d'ajuster la proportion de produit de revêtement dirigée vers le volume \Λ en faisant varier le rapport R' = D51/D81. Pour le rinçage de l'organe de pulvérisation, on amène par l'injecteur 5 des trains d'air-solvant, dimensionnés avec un débit permettant de gaver le volume Vi. Les trains d'air et de solvant suivent les mêmes trajets que le produit de revêtement, de l'injecteur 5 vers les arêtes 101 et 201.D 51 of the downstream end portion 51 of the injector 5. This has the effect of ensuring that at least part of the product leaving the injector is directed to the volume Vi. It is possible to adjust the proportion of coating product directed to the volume by varying the ratio R '= D 51 / D 81. For the rinsing of the spray member, the injector 5 is supplied with air-solvent trains, sized with a flow rate to fill the volume Vi. The air and solvent trains follow the same paths as the coating product, from the injector 5 to the edges 101 and 201.
La diminution de l'écart entre les bols 100 et 200 de ei à e2, a pour effet de compenser une diminution de pression due à la force centrifuge et de comprimer légèrement le liquide de rinçage pour permettre le gavage du volumeThe decrease of the gap between bowls 100 and 200 ei to e 2 , has the effect of compensating for a decrease in pressure due to the centrifugal force and slightly compressing the rinsing liquid to allow the feeding of the volume
Vi lors du rinçage de l'organe de pulvérisation, ce qui permet de rincer en même temps la surface 102 et la surface 203.Vi during the rinsing of the spray member, which allows to rinse at the same time the surface 102 and the surface 203.
Ainsi, l'injection de produit de nettoyage permet de nettoyer correctement non seulement les surfaces internes 102 et 202, mais également la surface 203. En outre, les trains d'air-solvant peuvent créer une mousse, par dispersion d'air dans un liquide, qui augmente l'efficacité du nettoyage. On peut également prévoir que le produit de nettoyage soit lui-même un produit moussant. Dans ce cas, l'effet de compression obtenu du fait de la diminution de l'épaisseur e s'exerce sur les bulles d'air présentes dans la dispersion ou dans le produit moussant, ce qui engendre un effet « racleur » des bulles d'air sur les surfaces 102 et 203.Thus, the injection of cleaning product can properly clean not only the internal surfaces 102 and 202, but also the surface 203. In addition, the air-solvent trains can create a foam, by air dispersion in a liquid, which increases the efficiency of cleaning. It is also possible that the cleaning product is itself a foaming product. In this case, the compression effect obtained due to the decrease in the thickness e is exerted on the air bubbles present in the dispersion or in the foaming product, which gives rise to a "scraping" effect of the bubbles. air on surfaces 102 and 203.
Le bol 100 est percé d'une série d'orifices 150 qui s'étende chacun entre une entrée 150A située sur la surface 103 du bol 100 et une sortie 150B située sur la surface 102. Les orifices 150 sont cylindriques centrés chacun sur un axe X150 oblique par rapport à l'axe Xio-X'io- Les orifices 150 permettent de générer une entrée d'air par l'extérieur vers le volume Vi. Ces orifices sont aisés à réaliser car ils peuvent être percés dans le bol 100 avant le montage du bol 200. L'invention a été représentée avec un organe de pulvérisation 10 comportant deux bols. Elle est également applicable avec un empilement de trois ou plus de trois bols successifs montés en série terminée par le montage d'un distributeur sur le bol le plus interne. Dans ce cas, des volumes \Λ,... , Vn-I peuvent être définis par analogie au mode de réalisation représenté, avec des géométries différentes, chaque volume ayant une épaisseur radiale décroissante, de sa zone d'entrée vers sa zone de sortie.The bowl 100 is pierced with a series of orifices 150 which each extend between an inlet 150A located on the surface 103 of the bowl 100 and an outlet 150B located on the surface 102. The orifices 150 are cylindrical, each centered on one axis X150 oblique with respect to the Xio-X'i axis The orifices 150 make it possible to generate an air inlet from the outside towards the volume Vi. These holes are easy to achieve because they can be drilled in the bowl 100 before mounting the bowl 200. The invention has been shown with a spraying member 10 having two bowls. It is also applicable with a stack of three or more successive bowls connected in series ended by mounting a dispenser on the innermost bowl. In this case, volumes \ Λ, ..., V nI may be defined by analogy with the embodiment shown, with different geometries, each volume having a decreasing radial thickness, from its entry zone to its exit zone. .
L'invention a été représentée avec un organe de pulvérisation 10 fixé au rotor 1 par effet magnétique. Elle est également applicable avec un organe de pulvérisation fixé par tout autre moyen, notamment vissé.The invention has been shown with a spraying member 10 attached to the rotor 1 by magnetic effect. It is also applicable with a spraying member fixed by any other means, in particular screwed.
L'invention a été représentée avec des bols 100 et 200 démontables. Elle est également applicable avec un organe dont les bols ne sont pas démontables, par exemple monoblocs.The invention has been shown with bowls 100 and 200 removable. It is also applicable with an organ whose bowls are not removable, for example monoblocks.
L'invention a été représentée avec un bol 100 dont l'arête 101 a un diamètre D101 supérieur au diamètre D2oi de l'arête 201 du bol 200. L'invention est toutefois applicable au cas où le diamètre D1Oi est égal ou légèrement inférieur au diamètre D201, ce qui est possible du fait du retrait di de l'arête 101 par rapport a l'arête 201. The invention has been shown with a bowl 100 whose edge 101 has a diameter D 101 greater than the diameter D 2 oi of the edge 201 of the bowl 200. The invention is however applicable to the case where the diameter D 1O i is equal to or slightly less than the diameter D 201 , which is possible because of the withdrawal di of the edge 101 relative to the edge 201.

Claims

REVENDICATIONS
1. Organe de pulvérisation (10) pour un projecteur rotatif de produit de revêtement, ledit organe de pulvérisation (10) comprenant au moins un bol externe (100) et un bol interne (200), chaque bol définissant une arête de pulvérisation (101 , 201), une surface interne de répartition (102, 202) et une surface externe (103, 203), le bol interne (200) étant disposé radialement à l'intérieur du bol externe (100), alors qu'un volume (V1) défini entre la surface interne (102) du bol externe et la surface externe (203) du bol interne a une épaisseur (e) décroissante entre une première valeur (e-i), prise au niveau d'une zone d'entrée de produit de nettoyage dans le volume (V-i), et une deuxième valeur (e2), prise au niveau de l'arête de pulvérisation (101) du bol externe (100), l'organe de pulvérisation (10) étant caractérisé en ce qu'il comprend des moyens (6, 8) d'alimentation centrale des surfaces internes de répartition (102, 202) des bols (100, 200).A spraying member (10) for a rotating coating product projector, said spraying member (10) comprising at least one outer bowl (100) and an inner bowl (200), each bowl defining a spray edge (101). 201), an inner distribution surface (102, 202) and an outer surface (103, 203), the inner bowl (200) being disposed radially inside the outer bowl (100), while a volume ( V 1) defined between the inner surface (102) of the outer bowl and the outer surface (203) of the inner bowl has a thickness (e) decreasing between a first value (ei), taken at an inlet region of cleaning product in the volume (Vi), and a second value (e 2 ), taken at the spraying edge (101) of the outer bowl (100), the spraying member (10) being characterized in that it comprises means (6, 8) for central feeding of the internal distribution surfaces (102, 202) of the bowls (100, 200).
2. Organe de pulvérisation selon la revendication 1 , caractérisé en ce que les moyens d'alimentation centrale comprennent un répartiteur (8) pourvu d'un orifice (81) aligné sur un axe (X10) de symétrie des surfaces internes (102, 202) et externes (103, 203) des bols (100, 200), cet orifice étant destiné à l'alimentation en produit de revêtement de la surface interne de répartition (202) du bol interne (200).Spray device according to Claim 1, characterized in that the central feed means comprise a distributor (8) provided with an orifice (81) aligned with an axis (X 10 ) of symmetry of the internal surfaces (102, 202) and external (103, 203) bowls (100, 200), this opening being for the supply of coating material of the internal distribution surface (202) of the inner bowl (200).
3. Organe de pulvérisation selon l'une des revendications 1 ou 2, caractérisé en ce que les moyens d'alimentation comprennent un déflecteur (7) monté dans le bol interne (200), en regard d'une partie centrale de sa surface interne de répartition (202).3. Spray device according to one of claims 1 or 2, characterized in that the supply means comprise a deflector (7) mounted in the inner bowl (200), facing a central portion of its inner surface of distribution (202).
4. Organe de pulvérisation selon l'une des revendications précédentes, caractérisé en ce que le rapport (R) de la deuxième valeur (e2) sur la première valeur (e-i) est inférieur à 0,9, de préférence à 0,5, de préférence encore de l'ordre de 0,4.4. Spray device according to one of the preceding claims, characterized in that the ratio (R) of the second value (e 2 ) to the first value (ei) is less than 0.9, preferably 0.5 more preferably of the order of 0.4.
5. Organe de pulvérisation selon l'une des revendications précédentes, caractérisé en ce que l'arête de pulvérisation (101) du bol externe (100) est axialement en retrait par rapport à l'arête de pulvérisation (201) du bol interne (200), d'une distance (di) supérieure à 1 % du diamètre (D2oi) de l'arête de pulvérisation (201) du bol interne (200).Spray device according to one of the preceding claims, characterized in that the spraying edge (101) of the outer bowl (100) is axially recessed with respect to the spraying edge (201) of the bowl. internal (200), with a distance (di) greater than 1% of the diameter (D 2 oi) of the spraying edge (201) of the internal bowl (200).
6. Organe de pulvérisation selon l'une des revendications précédentes caractérisée en ce que le bol externe (100) est pourvu d'orifices (150) d'entrée d'air vers le volume (Vi) défini entre la surface externe (203) du bol interne (200) et la surface interne (102) du bol externe.6. Spray device according to one of the preceding claims characterized in that the outer bowl (100) is provided with orifices (150) of air inlet to the volume (Vi) defined between the outer surface (203) the inner bowl (200) and the inner surface (102) of the outer bowl.
7. Dispositif de projection de produit de revêtement comprenant un organe de pulvérisation (10), des moyens (1) d'entraînement dudit organe en rotation et des moyens (5) d'alimentation dudit organe en produit de revêtement, caractérisé en ce que ledit organe de pulvérisation est selon l'une des revendications précédentes.7. Coating product spraying device comprising a spraying member (10), means (1) for driving said rotating member and means (5) for supplying said member with a coating product, characterized in that said spray member is according to one of the preceding claims.
8. Dispositif de projection selon la revendication 7 dans lequel l'organe de pulvérisation est selon la revendication 2, caractérisé en ce que le diamètre (D81) dudit orifice (81) est inférieur ou égal au diamètre interne (D51) de l'extrémité aval (51) des moyens (5) d'alimentation en produit de revêtement.8. Projection device according to claim 7 wherein the spray member is according to claim 2, characterized in that the diameter (D 81 ) of said orifice (81) is less than or equal to the internal diameter (D 51 ) of the downstream end (51) of the coating material supply means (5).
9 Installation de projection de produit de revêtement, caractérisée en ce qu'elle comprend au moins un dispositif de projection selon l'une des revendications 7 ou 8.9 Apparatus for projecting coating product, characterized in that it comprises at least one projection device according to one of claims 7 or 8.
10. Méthode de nettoyage d'un organe de pulvérisation (10) selon l'une des revendications 1 à 6, caractérisée en ce qu'elle comprend une étape consistant à gaver ledit volume (V1) en produit de nettoyage et/ou en air.10. The method of cleaning a spray member (10) according to one of claims 1 to 6, characterized in that it comprises a step of force-feeding said volume (V 1) with cleaning product and / or air.
11. Méthode selon la revendication 10, caractérisé en ce qu'elle consiste à utiliser, pour gaver ledit volume (\Λ), un produit de nettoyage ou un mélange de produit de nettoyage et d'air moussant. 11. The method of claim 10, characterized in that it consists in using, for gavage said volume (\ Λ), a cleaning product or a mixture of cleaning product and foaming air.
EP08805488.7A 2007-04-23 2008-04-22 Spraying member, spraying device comprising such a member, spraying installation and method of cleaning such a member Active EP2139604B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08805488T PL2139604T3 (en) 2007-04-23 2008-04-22 Spraying member, spraying device comprising such a member, spraying installation and method of cleaning such a member

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0702929A FR2915115B1 (en) 2007-04-23 2007-04-23 SPRAYING DEVICE, PROJECTION DEVICE COMPRISING SUCH AN ORGAN, PROJECTION PLANT AND METHOD OF CLEANING SUCH AN ORGAN
PCT/FR2008/000568 WO2008145846A2 (en) 2007-04-23 2008-04-22 Spraying member, spraying device comprising such a member, spraying installation and method of cleaning such a member

Publications (2)

Publication Number Publication Date
EP2139604A2 true EP2139604A2 (en) 2010-01-06
EP2139604B1 EP2139604B1 (en) 2017-07-26

Family

ID=38752538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08805488.7A Active EP2139604B1 (en) 2007-04-23 2008-04-22 Spraying member, spraying device comprising such a member, spraying installation and method of cleaning such a member

Country Status (6)

Country Link
US (1) US8905325B2 (en)
EP (1) EP2139604B1 (en)
ES (1) ES2644755T3 (en)
FR (1) FR2915115B1 (en)
PL (1) PL2139604T3 (en)
WO (1) WO2008145846A2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009037604A1 (en) * 2009-08-14 2011-02-24 Dürr Systems GmbH Color nozzle for a bell cup of a rotary atomizer
TW201302793A (en) 2010-09-03 2013-01-16 Glaxo Group Ltd Novel antigen binding proteins
US9488108B2 (en) * 2012-10-17 2016-11-08 Delavan Inc. Radial vane inner air swirlers
EP2808087B1 (en) * 2013-05-28 2019-02-27 Valmet Technologies, Inc. Device for treating a fibre web
CA2937837C (en) * 2014-01-29 2019-08-06 Honda Motor Co., Ltd. Rotary atomizing coating device and spray head
KR101634298B1 (en) * 2016-01-20 2016-06-30 박상은 Doule bell-cup
GB2563054B (en) 2017-06-01 2022-04-20 Novanta Tech Uk Limited Rotary atomiser bell cups
US20200041130A1 (en) 2018-07-31 2020-02-06 Hotstart, Inc. Combustor Systems
USD910717S1 (en) 2018-07-31 2021-02-16 Hotstart, Inc. Rotary atomizer
FR3087680B1 (en) 2018-10-30 2023-02-10 Exel Ind BOWL FOR SPRAYING COATING PRODUCT, ROTARY PROJECTOR INCLUDING SUCH BOWL AND METHOD FOR CLEANING SUCH PROJECTOR
DE102018129964B4 (en) * 2018-11-27 2023-11-16 Dürr Systems Ag Rotary atomizer and its operating methods as well as coating robots with rotary atomizers
CN109526730B (en) * 2018-12-21 2022-02-08 曹哲峰 Special artificial pollination device and method for tomatoes
EP3980191B1 (en) 2019-06-10 2024-07-03 ATLAS COPCO AIRPOWER, naamloze vennootschap A device for painting a compressor or vacuum pump housing and method applied
BE1027347B1 (en) 2019-06-10 2021-01-19 Atlas Copco Airpower Nv Device for painting a housing of a compressor or vacuum pump element and method used
CN112934553A (en) * 2019-09-25 2021-06-11 张�杰 Environment-friendly dry type circulating paint spray booth and use method thereof
JP7220730B2 (en) * 2021-01-15 2023-02-10 本田技研工業株式会社 Rotary atomization type coating equipment
JP6948487B1 (en) * 2021-06-23 2021-10-13 アーベーベー・シュバイツ・アーゲーＡＢＢ Ｓｃｈｗｅｉｚ ＡＧ Electrostatic coating equipment
DE102021127163A1 (en) * 2021-10-20 2023-04-20 Dürr Systems Ag Bell cup and rotary atomizer with such a bell cup

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009441A (en) * 1959-06-18 1961-11-21 Ransburg Electro Coating Corp Apparatus for electrostatically spray coating
NL134788C (en) * 1961-04-14
FR1363681A (en) 1962-07-17 1964-06-12 Installation for electrostatically depositing a fluid covering material on an object
GB1053514A (en) * 1963-02-19 1900-01-01
DE1577637C3 (en) * 1964-08-26 1973-11-15 Robert Bosch Hausgeraete Gmbh, 7927 Giengen Device for spraying on liquid application agents, especially paints
DE1577654A1 (en) * 1966-10-04 1970-01-29 Bosch Hausgeraete Gmbh Device for spraying on liquid application agents
AT279775B (en) * 1967-06-15 1970-03-25 Villamos Automatika Intezet Device for simultaneous electrostatic spraying of various substances
FR2170940A1 (en) * 1972-02-09 1973-09-21 Usimat Sa
SU733565A1 (en) * 1978-11-02 1980-05-18 Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Сельскохозяйственного Машиностроения Им. В.П.Горячкина Liquid sprayer
US4555058A (en) * 1983-10-05 1985-11-26 Champion Spark Plug Company Rotary atomizer coater
US4785995A (en) * 1986-03-18 1988-11-22 Mazda Motor Corporation Methods and apparatus for conducting electrostatic spray coating
DE8708312U1 (en) * 1987-06-12 1987-07-30 Behr Industrieanlagen GmbH & Co, 74379 Ingersheim Device for atomizing liquid paint
FR2652518B1 (en) * 1989-10-03 1994-04-08 Sames Sa DEVICE FOR PROJECTING A COATING PRODUCT WITH A ROTATING SPRAYING MEMBER.
US5474236A (en) * 1992-12-03 1995-12-12 Nordson Corporation Transfer of electrostatic charge to a rotary atomizer head through the housing of a rotary atomizing spray device
DE4340441A1 (en) * 1992-12-03 1994-06-09 Nordson Corp Rotating atomiser for coating with paint - has hollow drive shaft for spray head with feed pipe inside and electrostatic charge applied
JP3753462B2 (en) * 1995-01-10 2006-03-08 マツダ株式会社 Multicolor rotary atomizing coating apparatus and cleaning method
US5632448A (en) * 1995-01-25 1997-05-27 Ransburg Corporation Rotary powder applicator
JP3726329B2 (en) * 1996-02-16 2005-12-14 トヨタ自動車株式会社 Bell head of rotary atomizing electrostatic coating machine and rotary atomizing electrostatic coating machine
EP0864367B1 (en) * 1996-10-01 2002-11-27 Abb K.K. Rotary atomization head
KR100265890B1 (en) * 1996-12-03 2000-09-15 라붸 린도베르 Rotating atomization head type coating apparatus
US5853126A (en) * 1997-02-05 1998-12-29 Illinois Tool Works, Inc. Quick disconnect for powder coating apparatus
US6328224B1 (en) * 1997-02-05 2001-12-11 Illinois Tool Works Inc. Replaceable liner for powder coating apparatus
US5947377A (en) * 1997-07-11 1999-09-07 Nordson Corporation Electrostatic rotary atomizing spray device with improved atomizer cup
FR2791279B1 (en) * 1999-03-25 2002-03-29 Sames Sa DEVICE FOR SPRAYING A POWDER COATING PRODUCT AND SPRAYING MEMBER EQUIPPED WITH SUCH A DEVICE
US6341734B1 (en) * 2000-10-19 2002-01-29 Efc Systems, Inc. Rotary atomizer and bell cup and methods thereof
US6811094B2 (en) * 2000-12-20 2004-11-02 Abb K.K. Rotary atomizing head type coater
US7128277B2 (en) * 2003-07-29 2006-10-31 Illinois Tool Works Inc. Powder bell with secondary charging electrode
JP4428973B2 (en) * 2003-09-10 2010-03-10 トヨタ自動車株式会社 Rotating atomizing coating apparatus and coating method
DE602005005635T2 (en) * 2004-02-06 2009-05-14 Sames Technologies SPRAY BELL FOR A ROTARY SPRAYER WITH MAGNETIC MOUNTING
JP4606065B2 (en) * 2004-05-24 2011-01-05 トリニティ工業株式会社 Coating machine and its rotating atomizing head
FR2887472B1 (en) 2005-06-23 2007-09-28 Sames Technologies Soc Par Act SPRAYING BOWL, PROJECTION DEVICE EQUIPPED WITH SUCH A BOWL, INSTALLATION COMPRISING SUCH A DEVICE AND METHOD FOR MOUNTING SUCH A BOWL

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008145846A2 *

Also Published As

Publication number Publication date
US20100193602A1 (en) 2010-08-05
WO2008145846A3 (en) 2009-03-12
FR2915115B1 (en) 2010-09-10
PL2139604T3 (en) 2018-01-31
WO2008145846A2 (en) 2008-12-04
EP2139604B1 (en) 2017-07-26
US8905325B2 (en) 2014-12-09
FR2915115A1 (en) 2008-10-24
ES2644755T3 (en) 2017-11-30

Similar Documents

Publication Publication Date Title
EP2139604B1 (en) Spraying member, spraying device comprising such a member, spraying installation and method of cleaning such a member
EP2429716B1 (en) Projector and member for spraying a coating material, and spraying method using such a sprayer
EP3296022B1 (en) Coating device
EP1963023B1 (en) Device for spraying a liquid
EP3231516B1 (en) Spray nozzle, in particular for a system for dispensing a pressurized fluid provided with a pushbutton, and dispensing system comprising such a nozzle
FR2586206A1 (en) CENTRIFUGAL ATOMIZER HEAD AND THIS ATOMIZER
WO1999010104A1 (en) Spraying attachment and appliance
EP2361157B1 (en) Coating material ejector
EP3033180A1 (en) Sprayer for a liquid coating product and spraying facility comprising such a sprayer
WO2020089242A1 (en) Bowl for spraying a coating product, rotary spraying apparatus including such a bowl, and method for cleaning such a spraying apparatus
EP1883478B1 (en) Nozzle comprising a swirl chamber
FR2501075A1 (en) ROTATING ATOMIZATION CUP FOR LIQUID PAINT APPLICATOR AND LIQUID PAINTING APPLICATION METHOD
WO2021156573A1 (en) Nozzle for spraying liquid in the form of mist
FR2915114A1 (en) SPRAYING DEVICE, PROJECTION DEVICE COMPRISING SUCH AN ORGAN, AND PROJECTION INSTALLATION COMPRISING SUCH A DEVICE
EP3530355B1 (en) Dispensing head with stepped whirl chamber for a dispensing system
WO2004024338A2 (en) Spray bowl, discharge device comprising one such bowl and discharge installation comprising one such device
EP2836309B1 (en) Rotating projector and method for spraying a coating product
EP3140032B1 (en) Injection device, in particular for injecting a hydrocarbon feedstock into a refining unit.
WO2004030828A1 (en) Liquid spraying device and agricultural machinery equipped with at least one device
FR2888762A1 (en) NOZZLE DRIVES DIVERGENT
EP3749444A1 (en) Feedstock injection device of an fcc unit, having a locally larger cross-section
FR2887475A1 (en) Liquid coating product e.g. paint, rotary sprayer for object, has bowl with central cavity defining annular channel with outer surface of injector, where channel is centered on rotor axis of air turbine and draws-in cleaning product to bowl
FR2852868A1 (en) Spray bowl for coating applicator has bowl with pin magnetically retained in bore in drive rotor
WO2010149882A1 (en) Method for checking a fog injector
BE570717A (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20091027

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PERINET, SYLVAIN

Inventor name: BALLU, PATRICK

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20170224

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SAMES KREMLIN

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 911952

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170815

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602008051321

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20170726

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2644755

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20171130

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 911952

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170726

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171026

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171027

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171126

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171026

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602008051321

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20180430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20180430

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180422

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180430

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180422

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20200326

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20080422

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170726

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20200518

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20200427

Year of fee payment: 13

Ref country code: IT

Payment date: 20200415

Year of fee payment: 13

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210422

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210422

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20220705

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210423

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210422

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200422

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240409

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20240423

Year of fee payment: 17