EP1068022A1 - Atomising bowl and electrostatic rotary sprayhead unit equipped therewith - Google Patents

Atomising bowl and electrostatic rotary sprayhead unit equipped therewith

Info

Publication number
EP1068022A1
EP1068022A1 EP99910470A EP99910470A EP1068022A1 EP 1068022 A1 EP1068022 A1 EP 1068022A1 EP 99910470 A EP99910470 A EP 99910470A EP 99910470 A EP99910470 A EP 99910470A EP 1068022 A1 EP1068022 A1 EP 1068022A1
Authority
EP
European Patent Office
Prior art keywords
bowl
flange
insert
spray
deflector
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
EP99910470A
Other languages
German (de)
French (fr)
Other versions
EP1068022B1 (en
Inventor
Eric Prus
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 SA
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 SA, Sames Technologies SAS filed Critical Sames SA
Publication of EP1068022A1 publication Critical patent/EP1068022A1/en
Application granted granted Critical
Publication of EP1068022B1 publication Critical patent/EP1068022B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • 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
    • B05B3/1035—Driving means; Parts thereof, e.g. turbine, shaft, bearings
    • B05B3/1042—Means for connecting, e.g. reversibly, the rotating spray member to its driving shaft
    • 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
    • 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
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes

Definitions

  • the invention relates to a spray bowl and to an electrostatic rotary sprayer for coating product equipped with such a bowl.
  • the bowls made of an insulating material do not allow the coating product to be electrostatically charged, so that additional means for charging the coating product must be provided by Corona discharges or emanations.
  • the charge of the coating product obtained is less effective, so that the effect of the electrostatic field on the coating particles is less, the deposition efficiency obtained being relatively low.
  • Bowls made of a conductive material make it possible to electrostatically charge the coating product when it flows in contact with the surfaces of the bowl which is brought to high voltage by any suitable means. These bowls generally have the drawback of constituting significant electrical capacities, potentially dangerous for a user and capable of creating electrical arcs capable of starting a fire in the explosive atmosphere of a coating booth.
  • electrostatic coating materials and their peripherals are subjected to extensive safety tests to ensure that they are not likely to cause an electric shock, the energy of which would be greater than a predetermined threshold value.
  • Some standards provide for example that the breakdown or discharge energy, between a part of the sprayer brought to high voltage and a sphere of small radius placed at a distance of the order of a centimeter, must be less than 0.24 mJ . Such a value cannot be observed with a known bowl made of electrically conductive material because the edges and the flat surfaces which it comprises, in particular in the vicinity of the discharge edge of the coating product, are liable to give rise to discharges of much higher energy.
  • the invention more particularly intends to remedy, by proposing a spray bowl allowing charging by contact of the coating product and for which the discharge or "breakdown" energy is maintained at a level lower than that imposed by the most restrictive standards.
  • the invention relates to a spray bowl for an electrostatic rotary projector for coating product, said bowl comprising a flange for distributing the product intended to be brought to high voltage during operation of the projector, so as to electrostatically charge the contact product, characterized in that the flange is electrically connected to at least one corona discharge device from a tapered tip end, this tapered tip end being arranged in the vicinity of a outer surface of the bowl.
  • the flange which constitutes the central part of the bowl, allows charging by contact with the coating product during flow.
  • the discharge element (s) create privileged paths of fragrance between the flange and the outside of the bowl, so that no energy accumulation is possible at a level such that the breakdown energy would exceed the admissible values .
  • the approximation of the object leads to an increase in the effluvium current resulting in a drift of the current consumed, this drift being able to be detected by a high voltage generator used to supply the bowl flange with high voltage.
  • known generators such as in particular from patent application EP-A-0 219 409 in the name of the Applicant, are capable of reacting to an abnormal variation of the current.
  • the variations of current generated by the discharge element (s) when an object to ground is approached are detected early enough by the generator for the latter's safety function to cut off the power supply before 'a potentially dangerous energy discharge is not possible.
  • the bowl comprises several discharge elements regularly distributed around its axis of rotation.
  • This multiplicity of discharge elements makes it possible to obtain, when the bowl is energized, the desired effect with a symmetry of revolution around the axis of rotation of the bowl, including in the absence of rotation.
  • this distribution avoids a dynamic imbalance of the bowl, that is to say an unbalance not admissible at the rotation speeds considered.
  • the flange is bordered, at its outer periphery, by a generally annular piece made of a material electrically more insulating than the material of the flange and forming an edge or spraying edge of the bowl and the current discharge element is formed by an insert made of a material electrically more conductive than the annular part and disposed in this annular part, in electrical contact with the flange, this insert extending as far as the vicinity of a external surface of the annular part.
  • the annular part located at the periphery of the flange avoids the risk of electrical breakdown between the flat surfaces brought to high voltage and a neighboring object brought to ground.
  • the inserts which are advantageously but not necessarily metallic, constitute particularly effective discharge elements through the insulating or semiconductive layer produced by the annular part around the flange.
  • the insert is partially received in a hole made in the flange driver.
  • This particularly simple construction ensures effective electrical contact between the flange and the insert, while guaranteeing its positioning relative to the other constituents of the bowl.
  • the deflector carries at least one discharge element extending to an external surface, known as the front face, of the deflector.
  • the discharge element is an insert arranged along the axis of rotation of the bowl.
  • the insert (s) is or are in the form of a needle and provided with at least one tip-shaped end, this end being flush with the external surface of the annular part or of the deflector.
  • at least one insert carries a collar capable of cooperating with an internal shoulder of a housing for receiving the insert.
  • At least one insert is provided with two tip-shaped ends, these ends being flush with two external surfaces of the annular part, these external surfaces being oriented respectively towards the axis of rotation. and out of the bowl.
  • the end of the insert close to the external surface of the bowl is arranged near the spraying edge.
  • This arrangement is particularly advantageous, since it is near the spraying edge that there is the greatest risk of an obstacle to ground, such as a hatch or an unclosed door on a motor vehicle body. being coated.
  • the discharge element is formed by a point shaped on the external surface of the flange.
  • This aspect of the invention makes it possible to produce a fully conductive bowl, which is particularly effective for charging by contact with the coating product, while avoiding the aforementioned problems of discharge with potentially dangerous energy levels.
  • the points formed by the discharge elements are supplied with high voltage by the mass of the flange and constitute as many privileged discharge points by corona.
  • the point or points are formed in a single piece with the flange.
  • the invention also relates to an electrostatic coating product projector which comprises a bowl as described above and means for electrically connecting the flange of this bowl to a high voltage generator, this generator being able to detect variations in the current. corona passing through the bowl discharge element (s).
  • This projector meets the most demanding standards in terms of security, which corresponds to very high operational reliability.
  • FIG. 1 is a schematic representation of principle of an electrostatic rotary projector of a coating product according to one invention
  • FIG. 2 is a front view on a larger scale of the bowl used with the projector of Figure 1;
  • FIG. 3 is a section along line III-III in Figure 2;
  • FIG. 4 is an enlarged view of two details IV of Figure 3;
  • Figure 5 is a view similar to the part upper of Figure 4 for a bowl according to a second embodiment of the invention.
  • Figure 6 is a section similar to Figure 3 for a bowl according to a third embodiment of the invention.
  • an electrostatic rotary projector 1 of coating product comprises a rotor 2 driven in rotation by any suitable means and, in particular by an air turbine or an electric motor.
  • the rotor 2 carries an elastic ring 3 which can be in accordance with the technical teaching of EP-A-0 697 917.
  • the elastic ring 3 makes it possible to make a spray bowl 4 integral with the rotor 2.
  • the rotor 2 is crossed by a fixed duct 5 for supplying coating product to the vicinity of a central orifice 6 for feeding the bowl 4 formed in a flange 7 extending generally perpendicular to the axis of rotation XX 'of the rotor 2, ring 3 and bowl 4.
  • the rotor 2 is made of an electrically conductive material, for example metallic, and connected by any suitable means to a high voltage generator 8.
  • the ring 3 and the flange 7 are also made of electrically conductive materials, so that the high voltage from generator 8 is transmitted to the flange 7.
  • the flange 7 is therefore able to electrostatically charge, by contact, the coating product which flows on its surface when it is supplied with high voltage by the generator 8 during operation of the projector 1.
  • the bowl 4 also comprises a deflector 9 disposed opposite the outlet orifice of the conduit 5 relative to the flange 7, that is to say facing a surface 7a., Called the front face, of the flange 7.
  • the deflector 9 is pierced with four conduits 10 allowing, during the bowl cleaning phases, the flow of part of a solvent coming from the conduit 5 on its surface 9a. directed towards the outside and called the front face.
  • the deflector 9 is immobilized with respect to the flange 7 by screws 11 passing through the flange 7 and penetrating into the rear bosses 9b of the deflector 9.
  • the part 20 is advantageously glued to the flange 7. It is also noted that the respective shapes of the parts 7 and 20 contribute to immobilizing the part 20 on the flange 7 by cooperation of shapes.
  • Needle-shaped metal inserts 22 are housed in eight blind holes 23 formed both in the part 20 and in the flange 7.
  • Each insert 22 comprises a first end 22a_, in the shape of a point, disposed flush with the external surface 20a, of the part 20 near the spraying edge 21.
  • the second end 22b is pressed into the bottom of the bore 23 which is formed in the part 7b of the flange 7.
  • the inserts 22, which are metallic, are permanently brought to the same electrical potential as the flange 7.
  • a discharge line L is created as shown in dotted lines.
  • the inserts 22 therefore constitute as many discharge elements by emanation from the bowl 4.
  • the discharge line L results in a current consumption which can be detected by the generator 8 according to known techniques, in particular from EP-A-0 219 409 The generator is then able to react to this sudden increase in current by cutting off the supply to the bowl in order to prevent the energy level potentially reached during a spark discharge from being greater than an imposed value. It is understood that the fact that the bowl comprises several inserts 22 distributed around the axis XX 'makes it possible to multiply the effect described above and to ensure its symmetry around this axis.
  • a second series of eight inserts 25 is arranged through the part 20 and the external radial part 7b of the flange 7, each insert 25 comprising a first end 25_a in the form of point arranged in the immediate vicinity of the outer part 20 ⁇ of the outer surface 20a .
  • the tips 25a. inserts 25 are directed towards the rear of the bowl 4, in the direction of the external surface of a cover 12 of the headlight 1 shown in phantom in Figure 1. In fact, no grounded object can be approached from the tips 25a. through the cover 12 which is insulating, so that this cover limits the area of potential approach of an object to ground.
  • Each insert 25 carries, at its second end 25b, a head or flange 25ç_ capable of cooperating with a shoulder 26a. of a receiving hole 26 of the insert 25. This makes it possible to position the first end 25a of the insert 25 with precision with respect to the external surface 20 ⁇ of the part 20.
  • a plug of glue or resin 27 is advantageously disposed in the part of the bore 26 opposite the point 25a, so that the part 20 ⁇ of the external surface 20a, directed towards the axis XX 'does not have any irregularities in which could accumulate the coating product.
  • an insert 28 is disposed in the deflector 9 and comprises a first end 28a, in the form of a point, arranged flush with the front face 9a , of the deflector 9. If the deflector 9 is made of electrically conductive material, the insert 28 is brought to the same electrostatic potential as the flange 7, so that it is capable of generating a discharge line, as explained above with reference to the inserts 22 and 25 It should be noted here that, even if it is disposed within an electrically conductive surface brought to high voltage through the bosses 9b, the tip of the insert 28 constitutes a privileged zone of discharge with respect to the surface 9a_ of the deflector 9.
  • the emanations generated at the tips of the inserts 25 and 28 are detected by the generator 8.
  • the deflector 9 is made of electrically insulating material, in which case the insert 28 is brought to a floating potential.
  • the tip 28a also serves for the effluvium of the electrostatic charges drained by the insert 28 at the surface of the deflector 9.
  • the insert 28 prevents the electrical capacity of the duct 5, of its support and of the turbine associated with the rotor 2 is not discharged through the ducts 10 for rinsing the front face 9a . of the deflector.
  • the inserts 25 include a tapered tip at each end 25a, or 25b. This also makes it possible to create a discharge line L "on the side of the surface 20a ⁇ of the part 20 when a sphere S, at earth potential, is approached in the direction of the point 25b.
  • the point ends 25b avoid the creation of electric arcs or discharges of high energy between the front circular edge 9ç_ of the deflector and an object grounded in the position of the sphere S in FIG. 5.
  • the presence of the flange 25.ç_ and of the shoulder 26a guarantees that the inserts 25 are not likely to be ejected from the bowl under the effect of the intense centrifugal forces which they undergo from makes high rotation speeds of the spray bowl which can reach, or even exceed, 80,000 revolutions per minute.
  • the material used for the manufacture of the flange 7 is advantageously based on aluminum, which allows it to have good dimensional stability, this property being essential during the rotation of the bowl at high speed.
  • the material used for part 20 can be a polyoxymethylene resin.
  • the inserts 22, 25 and 28 can be made of steel or aluminum.
  • the annular part 20 can also be made of a semiconductor material, since it is sufficient for the part 20 to have a resistivity greater than that of the inserts 22 or 25 for these to constitute privileged discharge paths. According to another alternative and when the part 20 is made of an electrically insulating material, it can be provided that the inserts 22 and 25, or even the insert 28, are made of a semiconductor material.
  • the bowl 54 shown in Figure 6 can be mounted on the projector shown diagrammatically in FIG. 1.
  • This bowl essentially comprises a flange 57 made of an electrically conductive material on which a deflector 59 is fixed by means of several screws 61.
  • This bowl differs from those of the previous embodiments essentially in that it does not include an annular part that is more insulating than the flange 57, but on the contrary in that the flange 57 extends radially to the outside so as to constitute the spraying edge 71.
  • 57ç_ the peripheral surface external of the flange 57.
  • points 75a On this surface 57c ⁇ are provided several pins or points 75a, integrally formed with the flange 57. In the same way, several points 72 so nt provided on the spraying edge 71. Finally, points or pins 75b are arranged on an internal surface 57d of the flange 57 directed towards the deflector 59. As before, the points 72 to 75a, and 75b constitute as many privileged areas of discharge of the electrical capacity formed by the flange 57 as a whole. The variations in current consumption induced by the emanations, during the creation of a discharge line, in particular by approaching an object of ground, can be detected by the generator 8 mentioned with reference to the first embodiment.
  • the points or pins 72, 75a, and 75b have a height h by relative to the spraying edge 71 or to the surfaces 57c . and 57d . on the order of 1 to 2 mm, which allows them to create discharge zones by corona without presenting a dangerous character for a user who handles the bowl 54.
  • the deflector 58 can be equipped with a corona discharge insert, or even provided, in its central part, with a point of the type of points 72.

Abstract

The invention concerns an atomising bowl (4) for coating product electrostatic rotary sprayhead unit (1), said bowl comprising a bell (7) for distributing the product made from a conductive material and arranged to be brought to high voltage when the sprayhead unit is in operation, so as charge electrostatically said product by contact. The invention is characterised in that said bell is electrically connected to at least one corona discharge element (22, 25, 28) from one tapered end (22a, 25a, 25b, 28a), said tapered end being arranged in the proximity of said bowl outer surface (20a, 9a). The bowl is electrically connected to a generator capable of detecting variations in the glow currents passing through the discharge elements (22, 25, 28) or the bowl tips.

Description

BOL DE PULVERISATION ET PROJECTEUR ROTATIF ELECTROSTATIQUE EQUIPE D'UN TEL BOL SPRAY BOWL AND ELECTROSTATIC ROTARY SPOTLIGHT EQUIPPED WITH SUCH A BOWL
L'invention a trait à un bol de pulvérisation et à un pulvérisateur rotatif électrostatique de produit de revêtement équipé d'un tel bol.The invention relates to a spray bowl and to an electrostatic rotary sprayer for coating product equipped with such a bowl.
Il est connu d'équiper un pulvérisateur rotatif de produit de revêtement d'un bol ou cloche solidaire du rotor d'une turbine d'entraînement en rotation, afin de former un nuage de produit de revêtement pulvérisé, ce nuage étant entraîné par un champ électrostatique et, éventuellement, par un écoulement d'air, en direction d'un objet à revêtir. Il existe essentiellement deux types de bols de pulvérisation, à savoir les bols de pulvérisation réalisés dans un matériau électriquement conducteur et les bols de pulvérisation réalisés dans un matériau électriquement isolant.It is known to equip a rotary sprayer of coating product with a bowl or bell integral with the rotor of a rotary drive turbine, in order to form a cloud of sprayed coating product, this cloud being driven by a field electrostatic and, possibly, by a flow of air, towards an object to be coated. There are essentially two types of spray bowls, namely spray bowls made of an electrically conductive material and spray bowls made of an electrically insulating material.
Les bols réalisés dans un matériau isolant ne permettent pas de charger électrostatiquement le produit de revêtement, de sorte qu'il doit être prévu des moyens annexes de charge du produit de revêtement par décharges Corona ou effluves. La charge du produit de revêtement obtenue est moins efficace, de sorte que l'effet du champ électrostatique sur les particules de revêtement est moindre, le rendement de dépôt obtenu étant relativement faible.The bowls made of an insulating material do not allow the coating product to be electrostatically charged, so that additional means for charging the coating product must be provided by Corona discharges or emanations. The charge of the coating product obtained is less effective, so that the effect of the electrostatic field on the coating particles is less, the deposition efficiency obtained being relatively low.
Les bols réalisés dans un matériau conducteur permettent de charger électrostatiquement le produit du revêtement lors de son écoulement au contact des surfaces du bol qui est porté à la haute tension par tout moyen approprié. Ces bols présentent généralement l'inconvénient de constituer des capacités électriques importantes, potentiellement dangereuses pour un utilisateur et susceptibles de créer des arcs électriques propres à déclencher un incendie dans l'atmosphère explosive d'une cabine de revêtement. Par ailleurs, les matériels de revêtement électrostatique et leurs périphériques sont soumis à des tests de sécurité poussés afin de s'assurer qu'ils ne sont pas susceptibles de provoquer une décharge électrique dont l'énergie serait supérieure à une valeur de seuil prédéterminée. Certaines normes prévoient par exemple que l'énergie de claquage ou de décharge, entre une partie du pulvérisateur portée à la haute tension et une sphère de faible rayon disposée à une distance de l'ordre du centimètre, doit être inférieure à 0,24 mJ. Une telle valeur ne peut pas être respectée avec un bol connu réalisé en matériau électriquement conducteur car les arêtes et les surfaces planes qu'il comprend, notamment voisinage du bord de décharge du produit de revêtement, sont susceptibles de donner naissance à des décharges d'énergie bien supérieure.Bowls made of a conductive material make it possible to electrostatically charge the coating product when it flows in contact with the surfaces of the bowl which is brought to high voltage by any suitable means. These bowls generally have the drawback of constituting significant electrical capacities, potentially dangerous for a user and capable of creating electrical arcs capable of starting a fire in the explosive atmosphere of a coating booth. In addition, electrostatic coating materials and their peripherals are subjected to extensive safety tests to ensure that they are not likely to cause an electric shock, the energy of which would be greater than a predetermined threshold value. Some standards provide for example that the breakdown or discharge energy, between a part of the sprayer brought to high voltage and a sphere of small radius placed at a distance of the order of a centimeter, must be less than 0.24 mJ . Such a value cannot be observed with a known bowl made of electrically conductive material because the edges and the flat surfaces which it comprises, in particular in the vicinity of the discharge edge of the coating product, are liable to give rise to discharges of much higher energy.
C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention, en proposant un bol de pulvérisation permettant une charge par contact du produit de revêtement et pour lequel l'énergie de décharge ou "de claquage" est mainte- nue à un niveau inférieur à celui imposé par les normes les plus restrictives.It is to these drawbacks that the invention more particularly intends to remedy, by proposing a spray bowl allowing charging by contact of the coating product and for which the discharge or "breakdown" energy is maintained at a level lower than that imposed by the most restrictive standards.
Dans cet esprit, l'invention concerne un bol de pulvérisation pour projecteur rotatif électrostatique de produit de revêtement, ledit bol comprenant un flasque de répartition du produit prévu pour être porté à la haute tension lors du fonctionnement du projecteur, de manière à charger électrostatiquement le produit par contact, caractérisé en ce que le flasque est relié électriquement à au moins un élément de décharge de courant par effluve à partir d'une extrémité en forme de pointe effilée, cette extrémité en forme de pointe effilée étant disposée au voisinage d'une surface externe du bol.In this spirit, the invention relates to a spray bowl for an electrostatic rotary projector for coating product, said bowl comprising a flange for distributing the product intended to be brought to high voltage during operation of the projector, so as to electrostatically charge the contact product, characterized in that the flange is electrically connected to at least one corona discharge device from a tapered tip end, this tapered tip end being arranged in the vicinity of a outer surface of the bowl.
Grâce à l'invention, le flasque, qui constitue la partie centrale du bol, autorise une charge par contact du produit de revêtement en cours d'écoulement. Le ou les éléments de décharge créent des chemins privilégiés d'effluves entre le flasque et l'extérieur du bol, de sorte qu'aucune accumulation d'énergie n'est possible à un niveau tel que l'énergie de claquage dépasserait les valeurs admissibles. En outre, en prenant la modélisation d'un objet à la masse qui se rapproche du bol, le rapprochement de l'objet conduit à une augmentation du courant d'effluve se traduisant par une dérive du courant consommé, cette dérive pouvant être détectée par un générateur de haute tension utilisé pour l'alimentation en haute tension du flasque du bol. En effet, les générateurs connus, tels que notamment de la demande de brevet EP-A-0 219 409 au nom de la Demanderesse, sont capables de réagir à une variation anormale du courant. Ainsi, les variations de courant généré par le ou les éléments de décharge lors de l'approche d'un objet à la masse sont détectées suffisamment tôt par le générateur pour que la fonction de sécurité de celui-ci supprime l'alimentation électrique avant qu'une décharge d'énergie potentiellement dangereuse ne soit possible.Thanks to the invention, the flange, which constitutes the central part of the bowl, allows charging by contact with the coating product during flow. The discharge element (s) create privileged paths of fragrance between the flange and the outside of the bowl, so that no energy accumulation is possible at a level such that the breakdown energy would exceed the admissible values . In addition, by taking the modeling of a grounded object which approaches the bowl, the approximation of the object leads to an increase in the effluvium current resulting in a drift of the current consumed, this drift being able to be detected by a high voltage generator used to supply the bowl flange with high voltage. Indeed, known generators, such as in particular from patent application EP-A-0 219 409 in the name of the Applicant, are capable of reacting to an abnormal variation of the current. Thus, the variations of current generated by the discharge element (s) when an object to ground is approached are detected early enough by the generator for the latter's safety function to cut off the power supply before 'a potentially dangerous energy discharge is not possible.
Selon un premier aspect avantageux de l'invention, le bol comprend plusieurs éléments de décharge régulièrement répartis autour de son axe de rotation. Cette multiplicité des éléments de décharge permet d'obtenir, lors de la mise sous tension du bol, l'effet recherché avec une symétrie de révolution autour de l'axe de rotation du bol, y compris en l'absence de mise en rotation. En outre, cette répartition évite un déséquilibre dynamique du bol, c'est-à-dire un balourd non admissible aux vitesses de rotation considérées. Selon un premier mode de réalisation particulièrement avantageux de l'invention, le flasque est bordé, à sa périphérie externe, par une pièce globalement annulaire réalisée dans un matériau électriquement plus isolant que le matériau du flasque et formant un bord ou arête de pulvérisation du bol et l'élément de décharge du courant est formé par un insert réalisé dans un matériau électriquement plus conducteur que la pièce annulaire et disposé dans cette pièce annulaire, en contact électrique avec le flasque, cet insert s 'étendant jusqu'au voisinage d'une surface externe de la pièce annulaire. La pièce annulaire située à la périphérie du flasque évite les risques de claquage électrique entre les surfaces planes portées à la haute tension et un objet voisin porté à la masse. Les inserts, qui sont avantageusement mais non obligatoirement métalliques, constituent des éléments de décharges particuliè- rement efficaces à travers la couche isolante ou semi-conductrice réalisée par la pièce annulaire autour du flasque.According to a first advantageous aspect of the invention, the bowl comprises several discharge elements regularly distributed around its axis of rotation. This multiplicity of discharge elements makes it possible to obtain, when the bowl is energized, the desired effect with a symmetry of revolution around the axis of rotation of the bowl, including in the absence of rotation. In addition, this distribution avoids a dynamic imbalance of the bowl, that is to say an unbalance not admissible at the rotation speeds considered. According to a first particularly advantageous embodiment of the invention, the flange is bordered, at its outer periphery, by a generally annular piece made of a material electrically more insulating than the material of the flange and forming an edge or spraying edge of the bowl and the current discharge element is formed by an insert made of a material electrically more conductive than the annular part and disposed in this annular part, in electrical contact with the flange, this insert extending as far as the vicinity of a external surface of the annular part. The annular part located at the periphery of the flange avoids the risk of electrical breakdown between the flat surfaces brought to high voltage and a neighboring object brought to ground. The inserts, which are advantageously but not necessarily metallic, constitute particularly effective discharge elements through the insulating or semiconductive layer produced by the annular part around the flange.
Selon un autre aspect avantageux de l'invention, 1 ' insert est partiellement reçu dans un perçage ménagé dans le flasque conducteur. Cette construction particulièrement simple assure un contact électrique efficace entre le flasque et l' insert, tout en garantissant son positionnement par rapport aux autres constituants du bol. Selon un autre aspect avantageux de l'invention et dans le cas d'un bol comprenant un déflecteur du flux du produit de revêtement disposé en regard d'une surface, dite face avant, du flasque, le déflecteur porte au moins un élément de décharge s ' étendant jusqu'à une surface externe, dite face avant, du déflecteur. La présence de cet élément de décharge dans le déflecteur permet d'éviter également l'accumulation de charges électrostatiques dans ce déflecteur et dans le produit de revêtement en cours d'écoulement autour de ce déflecteur. Avantageusement, l'élément de décharge est un insert disposé suivant l'axe de rotation du bol.According to another advantageous aspect of the invention, the insert is partially received in a hole made in the flange driver. This particularly simple construction ensures effective electrical contact between the flange and the insert, while guaranteeing its positioning relative to the other constituents of the bowl. According to another advantageous aspect of the invention and in the case of a bowl comprising a deflector for the flow of the coating product disposed opposite a surface, known as the front face, of the flange, the deflector carries at least one discharge element extending to an external surface, known as the front face, of the deflector. The presence of this discharge element in the deflector also makes it possible to avoid the accumulation of electrostatic charges in this deflector and in the coating product in the course of flow around this deflector. Advantageously, the discharge element is an insert arranged along the axis of rotation of the bowl.
Selon un autre aspect avantageux de l'invention, le ou les inserts est ou sont en forme d'aiguille et munis d'au moins une extrémité en forme de pointe, cette extrémité étant affleurante à la surface externe de la pièce annulaire ou du déflecteur. Dans ce cas, on prévoit avantageusement qu'au moins un insert porte une collerette apte à coopérer avec un épaulement interne d'un logement de réception de 1 ' insert .According to another advantageous aspect of the invention, the insert (s) is or are in the form of a needle and provided with at least one tip-shaped end, this end being flush with the external surface of the annular part or of the deflector. . In this case, it is advantageously provided that at least one insert carries a collar capable of cooperating with an internal shoulder of a housing for receiving the insert.
Selon une variante de réalisation avantageuse de l'invention, au moins un insert est muni de deux extrémités en forme de pointe, ces extrémités étant affleurantes à deux surfaces externes de la pièce annulaire, ces surfaces externe étant orientées respectivement vers l'axe de rotation et vers l'extérieur du bol. Cette disposition particulière permet de limiter la valeur de l'énergie de décharge à la fois vers la zone centrale du bol et vers l'extérieur.According to an advantageous alternative embodiment of the invention, at least one insert is provided with two tip-shaped ends, these ends being flush with two external surfaces of the annular part, these external surfaces being oriented respectively towards the axis of rotation. and out of the bowl. This particular arrangement makes it possible to limit the value of the discharge energy both towards the central zone of the bowl and towards the outside.
Selon un autre aspect avantageux de l'invention, l'extrémité de 1 ' insert proche de la surface externe du bol est disposée à proximité du bord de pulvérisation. Cette disposition est particulièrement avantageuse, car c'est à proximité du bord de pulvérisation qu'il y a le plus de risques que se présente un obstacle à la masse, tel qu'une trappe ou une porte non fermée sur une carrosserie de véhicule automobile en cours de revêtement. Selon un autre mode de réalisation de l'invention, particulièrement avantageux, l'élément de décharge est formé par une pointe façonnée sur la surface externe du flasque. Cet aspect de l'invention permet de réaliser un bol entièrement conducteur, particulièrement efficace pour la charge par contact du produit de revêtement, tout en évitant les problèmes précités de décharge avec des niveaux d'énergie potentiellement dangereux. En effet, les pointes formées par les éléments de décharge sont alimentées en haute tension par la masse du flasque et constituent autant de points privilégiés de décharge par effluves. Avantageusement, la ou les pointes sont formées de façon monobloc avec le flasque.According to another advantageous aspect of the invention, the end of the insert close to the external surface of the bowl is arranged near the spraying edge. This arrangement is particularly advantageous, since it is near the spraying edge that there is the greatest risk of an obstacle to ground, such as a hatch or an unclosed door on a motor vehicle body. being coated. According to another particularly advantageous embodiment of the invention, the discharge element is formed by a point shaped on the external surface of the flange. This aspect of the invention makes it possible to produce a fully conductive bowl, which is particularly effective for charging by contact with the coating product, while avoiding the aforementioned problems of discharge with potentially dangerous energy levels. Indeed, the points formed by the discharge elements are supplied with high voltage by the mass of the flange and constitute as many privileged discharge points by corona. Advantageously, the point or points are formed in a single piece with the flange.
L'invention concerne également un projecteur électrostatique de produit de revêtement qui comprend un bol tel que précédemment décrit et des moyens de raccordement électrique du flasque de ce bol à un générateur de haute tension, ce générateur étant apte à détecter des variations du courant d'effluve transitant par le ou les éléments de décharge du bol. Ce projecteur permet de satisfaire aux normes les plus exigeantes en matière de sécurité, ce qui correspond à une très grande sûreté de fonctionnement.The invention also relates to an electrostatic coating product projector which comprises a bowl as described above and means for electrically connecting the flange of this bowl to a high voltage generator, this generator being able to detect variations in the current. corona passing through the bowl discharge element (s). This projector meets the most demanding standards in terms of security, which corresponds to very high operational reliability.
L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre de trois modes de réalisation d'un bol de pulvérisation et d'un projecteur sur lequel il peut être monté, conformes à son principe, 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 following description of three embodiments of a spray bowl and of a projector on which it can be mounted, in accordance with its principle, given solely by way of example and made with reference to the appended drawings in which:
- la figure 1 est une représentation schématique de principe d'un projecteur rotatif électrostatique d'un produit de revêtement conforme à 1 ' invention ;- Figure 1 is a schematic representation of principle of an electrostatic rotary projector of a coating product according to one invention;
- la figure 2 est une vue de face à plus grande échelle du bol utilisé avec le projecteur de la figure 1 ;- Figure 2 is a front view on a larger scale of the bowl used with the projector of Figure 1;
- la figure 3 est une coupe selon la ligne III-III à la figure 2 ;- Figure 3 is a section along line III-III in Figure 2;
- la figure 4 est une vue à plus grande échelle de deux détails IV de la figure 3 ;- Figure 4 is an enlarged view of two details IV of Figure 3;
- la figure 5 est une vue analogue à la partie supérieure de la figure 4 pour un bol conforme à un second mode de réalisation de l'invention et- Figure 5 is a view similar to the part upper of Figure 4 for a bowl according to a second embodiment of the invention and
- la figure 6 est une coupe analogue à la figure 3 pour un bol conforme à un troisième mode de réalisation de l'invention.- Figure 6 is a section similar to Figure 3 for a bowl according to a third embodiment of the invention.
A la figure 1, un projecteur rotatif électrostatique 1 de produit de revêtement comprend un rotor 2 entraîné en rotation par tout moyen adapté et, notamment par une turbine à air ou un moteur électrique. Le rotor 2 porte un anneau élastique 3 qui peut être conforme à l'enseignement technique de EP-A-0 697 917. L'anneau élastique 3 permet de rendre solidaire un bol de pulvérisation 4 du rotor 2. Le rotor 2 est traversé par un conduit fixe 5 d'amenée de produit de revêtement jusqu'au voisinage d'un orifice central 6 d'alimentation du bol 4 ménagé dans un flasque 7 s 'étendant globalement perpendiculairement à l'axe de rotation XX' du rotor 2, de l'anneau 3 et du bol 4.In FIG. 1, an electrostatic rotary projector 1 of coating product comprises a rotor 2 driven in rotation by any suitable means and, in particular by an air turbine or an electric motor. The rotor 2 carries an elastic ring 3 which can be in accordance with the technical teaching of EP-A-0 697 917. The elastic ring 3 makes it possible to make a spray bowl 4 integral with the rotor 2. The rotor 2 is crossed by a fixed duct 5 for supplying coating product to the vicinity of a central orifice 6 for feeding the bowl 4 formed in a flange 7 extending generally perpendicular to the axis of rotation XX 'of the rotor 2, ring 3 and bowl 4.
Le rotor 2 est réalisé dans un matériau électriquement conducteur, par exemple métallique, et connecté par tout moyen approprié à un générateur de haute tension 8. L'anneau 3 et le flasque 7 sont également réalisés dans des matériaux électriquement conducteurs, de sorte que la haute tension issue du générateur 8 est transmise jusqu'au flasque 7. Le flasque 7 est donc en mesure de charger électrostatiquement, par contact, le produit de revêtement qui s'écoule à sa surface lorsqu'il est alimenté en haute tension par le générateur 8 lors du fonctionnement du projecteur 1.The rotor 2 is made of an electrically conductive material, for example metallic, and connected by any suitable means to a high voltage generator 8. The ring 3 and the flange 7 are also made of electrically conductive materials, so that the high voltage from generator 8 is transmitted to the flange 7. The flange 7 is therefore able to electrostatically charge, by contact, the coating product which flows on its surface when it is supplied with high voltage by the generator 8 during operation of the projector 1.
Le bol 4 comprend également un déflecteur 9 disposé à l'opposé de l'orifice de sortie du conduit 5 par rapport au flasque 7, c'est-à-dire en regard d'une surface 7a., dite face avant, du flasque 7. Le déflecteur 9 est percé de quatre conduits 10 permettant, lors des phases de nettoyage du bol, l'écoulement d'une partie d'un solvant en provenance du conduit 5 sur sa surface 9a. dirigée vers 1 ' extérieur et dénommée face avant. Le déflecteur 9 est immobilisé par rapport au flasque 7 par des vis 11 traversant le flasque 7 et pénétrant dans des bossages arrière 9b du déflecteur 9.The bowl 4 also comprises a deflector 9 disposed opposite the outlet orifice of the conduit 5 relative to the flange 7, that is to say facing a surface 7a., Called the front face, of the flange 7. The deflector 9 is pierced with four conduits 10 allowing, during the bowl cleaning phases, the flow of part of a solvent coming from the conduit 5 on its surface 9a. directed towards the outside and called the front face. The deflector 9 is immobilized with respect to the flange 7 by screws 11 passing through the flange 7 and penetrating into the rear bosses 9b of the deflector 9.
Une pièce globalement annulaire 20, réalisée dans un matériau plastique électriquement isolant, est disposée autour d'une partie radiale externe 7b du flasque 7 et définit un bord ou arête de pulvérisation 21 du produit de revêtement lors de la rotation du bol 4. La pièce 20 est avantageusement collée sur le flasque 7. On note également que les formes respectives des pièces 7 et 20 contribuent à une immobilisation de la pièce 20 sur le flasque 7 par coopération de formes.A generally annular part 20, made of an electrically insulating plastic material, is arranged around of an external radial part 7b of the flange 7 and defines a spraying edge or edge 21 of the coating product during the rotation of the bowl 4. The part 20 is advantageously glued to the flange 7. It is also noted that the respective shapes of the parts 7 and 20 contribute to immobilizing the part 20 on the flange 7 by cooperation of shapes.
Des inserts métalliques 22 en forme d'aiguille sont logés dans huit perçages borgnes 23 ménagés à la fois dans la pièce 20 et dans le flasque 7. Chaque insert 22 comprend une première extrémité 22a_, en forme de pointe, disposée affleurante à la surface externe 20a, de la pièce 20 à proximité du bord de pulvérisation 21. La seconde extrémité 22b est enfoncée dans le fond du perçage 23 qui est ménagé dans la partie 7b du flasque 7. Ainsi, les inserts 22, qui sont métalliques, sont en permanence portés au même potentiel électrique que le flasque 7.Needle-shaped metal inserts 22 are housed in eight blind holes 23 formed both in the part 20 and in the flange 7. Each insert 22 comprises a first end 22a_, in the shape of a point, disposed flush with the external surface 20a, of the part 20 near the spraying edge 21. The second end 22b is pressed into the bottom of the bore 23 which is formed in the part 7b of the flange 7. Thus, the inserts 22, which are metallic, are permanently brought to the same electrical potential as the flange 7.
Lorsqu'un objet à la masse, représenté par une sphère S en traits mixtes à la figure 4, est approché du bord de pulvérisa- tion 21, une ligne de décharge L est créée comme représenté en traits pointillés. Les inserts 22 constituent donc autant d'éléments de décharge par effluve du bol 4. La ligne de décharge L résulte dans une consommation de courant qui peut être détectée par le générateur 8 selon des techniques connues, notamment de EP-A-0 219 409. Le générateur est alors en mesure de réagir à cette augmentation subite de courant en coupant l'alimentation du bol afin d'éviter que le niveau d'énergie potentiellement atteint lors d'une décharge par étincelle ne soit supérieur à une valeur imposée. On comprend que le fait que le bol comprend plusieurs inserts 22 répartis autour de l'axe XX' permet de multiplier l'effet décrit ci-dessus et d'en assurer la symétrie autour de cet axe.When a grounded object, represented by a sphere S in phantom in Figure 4, is approached from the spraying edge 21, a discharge line L is created as shown in dotted lines. The inserts 22 therefore constitute as many discharge elements by emanation from the bowl 4. The discharge line L results in a current consumption which can be detected by the generator 8 according to known techniques, in particular from EP-A-0 219 409 The generator is then able to react to this sudden increase in current by cutting off the supply to the bowl in order to prevent the energy level potentially reached during a spark discharge from being greater than an imposed value. It is understood that the fact that the bowl comprises several inserts 22 distributed around the axis XX 'makes it possible to multiply the effect described above and to ensure its symmetry around this axis.
En outre, et comme il ressort plus particulièrement des figures 3 et 4, une seconde série de huit inserts 25 est disposée à travers la pièce 20 et la partie radiale externe 7b du flasque 7, chaque insert 25 comprenant une première extrémité 25_a en forme de pointe disposée à proximité immédiate de la partie extérieure 20^ de la surface externe 20a..In addition, and as can be seen more particularly from FIGS. 3 and 4, a second series of eight inserts 25 is arranged through the part 20 and the external radial part 7b of the flange 7, each insert 25 comprising a first end 25_a in the form of point arranged in the immediate vicinity of the outer part 20 ^ of the outer surface 20a ..
Les pointes 25a. des inserts 25 sont dirigées vers l'arrière du bol 4, en direction de la surface externe d'un capot 12 du projecteur 1 représenté en traits mixtes à la figure 1. En effet, aucun objet à la masse ne peut être approché des pointes 25a. à travers le capot 12 qui est isolant, de sorte que ce capot limite la zone d'approche potentielle d'un objet à la masse .The tips 25a. inserts 25 are directed towards the rear of the bowl 4, in the direction of the external surface of a cover 12 of the headlight 1 shown in phantom in Figure 1. In fact, no grounded object can be approached from the tips 25a. through the cover 12 which is insulating, so that this cover limits the area of potential approach of an object to ground.
Comme précédemment, lors de l'approche d'un objet à la masse, représenté en traits mixtes par une sphère S, une ligne de décharge L' est créée à partir de la pointe 25a. de l' insert 25.As before, when approaching a grounded object, represented in phantom by a sphere S, a discharge line L 'is created from the tip 25a. of the insert 25.
Chaque insert 25 porte, au niveau de sa seconde extrémité 25b, une tête ou collerette 25ç_ susceptible de coopérer avec un épaulement 26a. d'un perçage de réception 26 de 1 ' insert 25. Ceci permet de positionner avec précision la première extrémité 25a, de 1 ' insert 25 par rapport à la surface extérieure 20^ de la pièce 20. Un bouchon de colle ou de résine 27 est avantageusement disposé dans la partie du perçage 26 opposée à la pointe 25a,, de façon à ce que la partie 20^ de la surface externe 20a, dirigée vers l'axe XX' ne présente pas d'irrégularités dans lesquelles pourrait s'accumuler le produit de revêtement.Each insert 25 carries, at its second end 25b, a head or flange 25ç_ capable of cooperating with a shoulder 26a. of a receiving hole 26 of the insert 25. This makes it possible to position the first end 25a of the insert 25 with precision with respect to the external surface 20 ^ of the part 20. A plug of glue or resin 27 is advantageously disposed in the part of the bore 26 opposite the point 25a, so that the part 20 ^ of the external surface 20a, directed towards the axis XX 'does not have any irregularities in which could accumulate the coating product.
Le positionnement des inserts 25 à travers deux parties 20b et 20ç_ de la pièce 20 disposées de part et d'autre de la partie externe 7b du flasque 7 permet d'améliorer l'immobilisation relative des pièces 7 et 20.The positioning of the inserts 25 through two parts 20b and 20c of the part 20 arranged on either side of the external part 7b of the flange 7 makes it possible to improve the relative immobilization of the parts 7 and 20.
En revenant aux figures 2 et 3 , on note qu'un insert 28 est disposé dans le déflecteur 9 et comprend une première extrémité 28a,, en forme de pointe, disposée de manière affleu- rante à la face avant 9a, du déflecteur 9. Si le déflecteur 9 est réalisé en matériau électriquement conducteur, l' insert 28 est porté au même potentiel électrostatique que le flasque 7, de sorte qu'il est susceptible de générer une ligne de décharge, comme expliqué précédemment en référence aux inserts 22 et 25. Il convient ici de noter que, même si elle est disposée au sein d'une surface électriquement conductrice portée à la haute tension à travers les bossages 9b, la pointe de l' insert 28 constitue une zone privilégiée de décharge par rapport à la surface 9a_ du déflecteur 9.Returning to FIGS. 2 and 3, it will be noted that an insert 28 is disposed in the deflector 9 and comprises a first end 28a, in the form of a point, arranged flush with the front face 9a , of the deflector 9. If the deflector 9 is made of electrically conductive material, the insert 28 is brought to the same electrostatic potential as the flange 7, so that it is capable of generating a discharge line, as explained above with reference to the inserts 22 and 25 It should be noted here that, even if it is disposed within an electrically conductive surface brought to high voltage through the bosses 9b, the tip of the insert 28 constitutes a privileged zone of discharge with respect to the surface 9a_ of the deflector 9.
Comme indiqué précédemment en référence aux inserts 22, les effluves générés au niveau des pointes des inserts 25 et 28 sont détectés par le générateur 8. II est également possible de prévoir que le déflecteur 9 est réalisé en matériau électriquement isolant, auquel cas 1 ' insert 28 est porté à un potentiel flottant. Dans ce cas, la pointe 28a, sert également à l'effluve des charges électrostatiques drainées par 1 ' insert 28 à la surface du déflecteur 9. Quels que soient les matériaux utilisés pour le déflecteur 9, 1 ' insert 28 évite que la capacité électrique du conduit 5, de son support et de la turbine associée au rotor 2 ne se décharge à travers les conduits 10 de rinçage de la face avant 9a. du déflecteur. Dans le second mode de réalisation de l'invention représenté à la figure 5, les éléments analogues à ceux du mode de réalisation des figures précédentes portent des références identiques. Ce mode de réalisation diffère du précédent essentiellement en ce que les inserts 25 comprennent une pointe effilée à chaque extrémité 25a, ou 25b. Ceci permet également de créer une ligne de décharge L" du côté de la surface 20a^ de la pièce 20 lorsqu'une sphère S, au potentiel de la terre, est approchée en direction de la pointe 25b. Les extrémités en pointe 25b évitent la création d'arcs électriques ou de déchar- ges d'énergie élevée entre l'arête circulaire avant 9ç_ du déflecteur et un objet à la masse dans la position de la sphère S à la figure 5.As indicated above with reference to the inserts 22, the emanations generated at the tips of the inserts 25 and 28 are detected by the generator 8. It is also possible to provide that the deflector 9 is made of electrically insulating material, in which case the insert 28 is brought to a floating potential. In this case, the tip 28a also serves for the effluvium of the electrostatic charges drained by the insert 28 at the surface of the deflector 9. Whatever the materials used for the deflector 9, the insert 28 prevents the electrical capacity of the duct 5, of its support and of the turbine associated with the rotor 2 is not discharged through the ducts 10 for rinsing the front face 9a . of the deflector. In the second embodiment of the invention shown in Figure 5, elements similar to those of the embodiment of the previous figures bear identical references. This embodiment differs from the previous essentially in that the inserts 25 include a tapered tip at each end 25a, or 25b. This also makes it possible to create a discharge line L "on the side of the surface 20a ^ of the part 20 when a sphere S, at earth potential, is approached in the direction of the point 25b. The point ends 25b avoid the creation of electric arcs or discharges of high energy between the front circular edge 9ç_ of the deflector and an object grounded in the position of the sphere S in FIG. 5.
Dans les deux modes de réalisation envisagés, la présence de la collerette 25.ç_ et de 1 ' épaulement 26a, garantit que les inserts 25 ne risquent pas d'être éjectés du bol sous l'effet des forces centrifuges intenses qu'ils subissent du fait des vitesses de rotation élevées du bol de pulvérisation qui peuvent atteindre, voire dépasser, 80 000 tours à la minute.In the two embodiments envisaged, the presence of the flange 25.ç_ and of the shoulder 26a, guarantees that the inserts 25 are not likely to be ejected from the bowl under the effect of the intense centrifugal forces which they undergo from makes high rotation speeds of the spray bowl which can reach, or even exceed, 80,000 revolutions per minute.
Le matériau utilisé pour la fabrication du flasque 7 est avantageusement à base d'aluminium, ce qui lui permet de présenter une bonne stabilité dimensionnelle, cette propriété étant essentielle lors de la mise en rotation du bol à vitesse élevée. Le matériau utilisé pour la pièce 20 peut être une résine à base de polyoxymethylene. Enfin, les inserts 22, 25 et 28 peuvent être confectionnés en acier ou en aluminium.The material used for the manufacture of the flange 7 is advantageously based on aluminum, which allows it to have good dimensional stability, this property being essential during the rotation of the bowl at high speed. The material used for part 20 can be a polyoxymethylene resin. Finally, the inserts 22, 25 and 28 can be made of steel or aluminum.
La pièce annulaire 20 peut également être réalisée dans un matériau semi-conducteur, car il suffit que la pièce 20 ait une résistivité supérieure à celle des inserts 22 ou 25 pour que ceux-ci constituent des chemins privilégiés de décharge. Selon une autre alternative et lorsque la pièce 20 est réalisée dans un matériau électriquement isolant, on peut prévoir que les inserts 22 et 25, voire 1 ' insert 28, sont réalisés dans un matériau semi-conducteur.The annular part 20 can also be made of a semiconductor material, since it is sufficient for the part 20 to have a resistivity greater than that of the inserts 22 or 25 for these to constitute privileged discharge paths. According to another alternative and when the part 20 is made of an electrically insulating material, it can be provided that the inserts 22 and 25, or even the insert 28, are made of a semiconductor material.
Dans le troisième mode de réalisation de l'invention représenté à la figure 6, les éléments analogues à ceux du mode de réalisation des figures 1 à 4 portent des références identiques augmentées de 50. Le bol 54 représenté à la figure 6 peut être monté sur le projecteur schématisé à la figure 1. Ce bol comprend essentiellement un flasque 57 réalisé en un matériau électriquement conducteur sur lequel est fixé un déflecteur 59 au moyen de plusieurs vis 61. Ce bol diffère de ceux des modes de réalisation précédent essentiellement en ce qu'il ne comprend pas de pièce annulaire plus isolante que le flasque 57, mais au contraire en ce que le flasque 57 s'étend radialement jusqu'à l'extérieur de façon à constituer l'arête de pulvérisation 71. On note 57ç_ la surface périphérique externe du flasque 57. Sur cette surface 57ç^ sont prévus plusieurs picots ou pointes 75a, venu de matière avec le flasque 57. De la même manière, plusieurs pointes 72 sont prévues sur l'arête de pulvérisation 71. Enfin, des pointes ou picots 75b sont disposés sur une surface interne 57d du flasque 57 dirigée vers le déflecteur 59. Comme précédemment, les pointes 72 à 75a, et 75b constituent autant de zones privilégiées de décharge par effluves de la capacité électrique constituée par le flasque 57 dans son ensemble. Les variations de consommation de courant induites par les effluves, lors de la création d'une ligne de décharge, notamment par approche d'un objet de la masse, peuvent être détectées par le générateur 8 mentionné en référence au premier mode de réalisation.In the third embodiment of the invention shown in Figure 6, elements similar to those of the embodiment of Figures 1 to 4 bear identical references increased by 50. The bowl 54 shown in Figure 6 can be mounted on the projector shown diagrammatically in FIG. 1. This bowl essentially comprises a flange 57 made of an electrically conductive material on which a deflector 59 is fixed by means of several screws 61. This bowl differs from those of the previous embodiments essentially in that it does not include an annular part that is more insulating than the flange 57, but on the contrary in that the flange 57 extends radially to the outside so as to constitute the spraying edge 71. We note 57ç_ the peripheral surface external of the flange 57. On this surface 57c ^ are provided several pins or points 75a, integrally formed with the flange 57. In the same way, several points 72 so nt provided on the spraying edge 71. Finally, points or pins 75b are arranged on an internal surface 57d of the flange 57 directed towards the deflector 59. As before, the points 72 to 75a, and 75b constitute as many privileged areas of discharge of the electrical capacity formed by the flange 57 as a whole. The variations in current consumption induced by the emanations, during the creation of a discharge line, in particular by approaching an object of ground, can be detected by the generator 8 mentioned with reference to the first embodiment.
Les pointes ou picots 72, 75a, et 75b ont une hauteur h par rapport à l'arête de pulvérisation 71 ou aux surfaces 57c. et 57d. de l'ordre de 1 à 2 mm, ce qui leur permet de créer des zones de décharge par effluves sans présenter de caractère dangereux pour un utilisateur qui manipule le bol 54.The points or pins 72, 75a, and 75b have a height h by relative to the spraying edge 71 or to the surfaces 57c . and 57d . on the order of 1 to 2 mm, which allows them to create discharge zones by corona without presenting a dangerous character for a user who handles the bowl 54.
Comme dans le premier mode de réalisation de l'invention, le déflecteur 58 peut être équipé d'un insert de décharge par effluve, voire pourvu, dans sa partie centrale, d'une pointe du type des pointes 72. As in the first embodiment of the invention, the deflector 58 can be equipped with a corona discharge insert, or even provided, in its central part, with a point of the type of points 72.

Claims

REVENDICATIONS 1. Bol de pulvérisation (4 ; 54) pour projecteur rotatif électrostatique (1) de produit de revêtement, ledit bol comprenant un flasque (7 ; 57) de répartition du produit réalisé dans un matériau électriquement conducteur et prévu pour être porté à la haute tension lors du fonctionnement du projecteur, de manière à charger électrostatiquement ledit produit par contact, caractérisé en ce que ledit flasque est relié électriquement à au moins un élément de décharge (22, 25, 28 ; 72, 75a,, 75b) de courant par effluve à partir d'une extrémité (22a, 25a,, 25b, 28a ; 72, 75a., 75b) en forme de pointe effilée, ladite extrémité en forme de pointe effilée étant disposée au voisinage d'une surface externe (20a,, 9a, ; 57c., 57b) dudit bol. CLAIMS 1. Spray bowl (4; 54) for electrostatic rotary projector (1) of coating product, said bowl comprising a flange (7; 57) for distributing the product made of an electrically conductive material and intended to be brought to the high voltage during operation of the projector, so as to electrostatically charge said product by contact, characterized in that said flange is electrically connected to at least one current discharge element (22, 25, 28; 72, 75a, 75b) by corona from one end (22a, 25a ,, 25b, 28a; 72, 75a . , 75b) in the form of a tapered point, said end in the form of a tapered point being disposed in the vicinity of an external surface (20a, , 9a,; 57c . , 57b) of said bowl.
2. Bol de pulvérisation selon la revendication 1, caractérisé en ce qu'il comprend plusieurs éléments de décharge (22, 25 ; 72, 75a., 75b) régulièrement répartis autour de l'axe de rotation (XX') dudit bol (4 ; 54).2. Spray bowl according to claim 1, characterized in that it comprises several discharge elements (22, 25; 72, 75a . , 75b) regularly distributed around the axis of rotation (XX ') of said bowl (4 ; 54).
3. Bol de pulvérisation selon la revendication 1, caracté- risé en ce que ledit flasque (7) est bordé, à sa périphérie externe (7b) , par une pièce (20) globalement annulaire réalisée dans un matériau électriquement isolant et formant un bord ou arête de pulvérisation (21) et en ce que au moins un insert (22, 25) électriquement conducteur est disposé dans ladite pièce annulaire, en contact électrique avec ledit flasque (7), ledit insert s 'étendant jusqu'au voisinage d'une surface externe (20a,) de ladite pièce annulaire.3. Spray bowl according to claim 1, characterized in that said flange (7) is bordered, at its outer periphery (7b), by a generally annular piece (20) made of an electrically insulating material and forming an edge or spraying edge (21) and in that at least one electrically conductive insert (22, 25) is disposed in said annular part, in electrical contact with said flange (7), said insert extending as far as the vicinity of an outer surface (20a,) of said annular part.
4. Bol de pulvérisation selon la revendication 3, caractérisé en ce que ledit insert (22, 25) est partiellement reçu dans un perçage (23, 26) ménagé dans ledit flasque conducteur (7) .4. Spray bowl according to claim 3, characterized in that said insert (22, 25) is partially received in a bore (23, 26) formed in said conductive flange (7).
5. Bol de pulvérisation selon l'une des revendications 1 à 4, comprenant un déflecteur (9) du flux de produit de revêtement disposé en regard d'une surface (7a,), dite face avant, dudit flasque (7), caractérisé en ce que ledit déflecteur porte au moins un élément de décharge (28) s 'étendant jusqu'à une surface externe (9a.) , dite face avant, dudit déflecteur. 5. Spray bowl according to one of claims 1 to 4, comprising a deflector (9) of the coating product flow disposed opposite a surface (7a,), said front face, of said flange (7), characterized in that said deflector carries at least one discharge element (28) extending to an external surface (9a.), said front face, of said deflector.
6. Bol de pulvérisation selon la revendication 5, caractérisé en ce que ledit élément de décharge est un insert (28) disposé selon l'axe de rotation (XX') dudit bol (4).6. Spray bowl according to claim 5, characterized in that said discharge element is an insert (28) disposed along the axis of rotation (XX ') of said bowl (4).
7. Bol de pulvérisation selon l'une des revendications 3, 4 ou 6 , caractérisé en ce que ledit ou lesdits inserts (22, 25,7. Spray bowl according to one of claims 3, 4 or 6, characterized in that said one or more inserts (22, 25,
28) est ou sont en forme d'aiguille et munis d'au moins une extrémité (22a,, 25a,, 28a.) en forme de pointe, ladite extrémité étant affleurante à ladite surface externe (20a,, 203^, 20a_2, 9a.) de ladite pièce annulaire (20) ou dudit déflecteur (9). 8. Bol de pulvérisation selon la revendication 7, caractérisé en ce qu'au moins un insert (25) porte une collerette (25.ç_) apte à coopérer avec un épaulement (26 _) interne d'un logement (26) de réception dudit insert.28) is or are in the shape of a needle and provided with at least one end (22a ,, 25a ,, 28a . ) In the shape of a point, said end being flush with said external surface (20a ,, 203 ^, 20a_ 2 , 9a.) Of said annular part (20) or of said deflector (9). 8. Spray bowl according to claim 7, characterized in that at least one insert (25) carries a flange (25.ç_) capable of cooperating with an internal shoulder (26_) of a housing (26) for receiving said insert.
9. Bol de pulvérisation selon la revendication 7, caracté- risé en ce qu'au moins un insert (25) est muni de deux extrémités (25a,, 25b) en forme de pointe, lesdites extrémités étant affleurantes à deux surfaces externes (20a-, , 200^) de ladite pièce annulaire (20), lesdits surfaces externes étant orientées respectivement vers l'axe de rotation (XX') du bol (4) et vers l'extérieur du bol.9. Spray bowl according to claim 7, characterized in that at least one insert (25) is provided with two ends (25a ,, 25b) in the shape of a point, said ends being flush with two external surfaces (20a -,, 200 ^) of said annular part (20), said external surfaces being oriented respectively towards the axis of rotation (XX ') of the bowl (4) and towards the outside of the bowl.
10. Bol de pulvérisation selon l'une des revendications 3 à 9, caractérisé en ce que l'extrémité (22a,) dudit insert (22) proche de la surface externe (20a.) dudit bol est disposée à proximité dudit bord ou arête de pulvérisation (21) . 10. Spray bowl according to one of claims 3 to 9, characterized in that the end (22a,) of said insert (22) close to the external surface (20a.) Of said bowl is disposed near said edge or edge spray (21).
11. Bol de pulvérisation selon l'une des revendications 1 ou 2, caractérisé en ce que ledit élément de décharge est formé par une pointe (72, 75a,, 75b) façonnée sur la surface externe (57b, 57c., 71) dudit flasque (57).11. Spray bowl according to one of claims 1 or 2, characterized in that said discharge element is formed by a tip (72, 75a ,, 75b) shaped on the external surface (57b, 57c., 71) of said flange (57).
12. Bol de pulvérisation selon la revendication 11, ladite pointe (72, 75a,, 75b) est monobloc avec ledit flasque (57) .12. Spray bowl according to claim 11, said tip (72, 75a, 75b) is in one piece with said flange (57).
13. Projecteur (1) rotatif électrostatique de produit de revêtement, caractérisé en ce qu'il comprend un bol (4 ; 54) selon l'une des revendications précédentes et des moyens de raccordement (2, 3) électrique du flasque (7 ; 57) dudit bol à un générateur de haute tension (8) , ledit générateur étant apte à détecter des variations du courant d'effluves transitant par lesdits éléments de décharge (22, 25, 28 ; 72, 75a,, 75b) dudit bol. 13. headlamp (1) electrostatic rotary coating product, characterized in that it comprises a bowl (4; 54) according to one of the preceding claims and electrical connection means (2, 3) of the flange (7; 57) of said bowl to a high-voltage generator (8), said generator being capable of detecting variations in the current of corona passing through said discharge elements (22, 25, 28; 72, 75a, 75b) of said bowl.
EP99910470A 1998-04-01 1999-03-31 Atomising bowl and electrostatic rotary sprayhead unit equipped therewith Expired - Lifetime EP1068022B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9804269 1998-04-01
FR9804269A FR2776946B1 (en) 1998-04-01 1998-04-01 SPRAY BOWL AND ELECTROSTATIC ROTARY SPOTLIGHT EQUIPPED WITH SUCH A BOWL
PCT/FR1999/000752 WO1999049982A1 (en) 1998-04-01 1999-03-31 Atomising bowl and electrostatic rotary sprayhead unit equipped therewith

Publications (2)

Publication Number Publication Date
EP1068022A1 true EP1068022A1 (en) 2001-01-17
EP1068022B1 EP1068022B1 (en) 2003-07-16

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ID=9524915

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EP99910470A Expired - Lifetime EP1068022B1 (en) 1998-04-01 1999-03-31 Atomising bowl and electrostatic rotary sprayhead unit equipped therewith

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US (1) US6347754B1 (en)
EP (1) EP1068022B1 (en)
JP (1) JP2002509795A (en)
KR (1) KR100564289B1 (en)
CN (1) CN1120056C (en)
AU (1) AU2941399A (en)
BR (1) BR9908740A (en)
CA (1) CA2320880A1 (en)
DE (1) DE69909605T2 (en)
ES (1) ES2203089T3 (en)
FR (1) FR2776946B1 (en)
HU (1) HUP0102390A2 (en)
PL (1) PL343080A1 (en)
TR (1) TR200002697T2 (en)
TW (1) TW429168B (en)
WO (1) WO1999049982A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8031992B2 (en) 2004-05-07 2011-10-04 Finisar Corporation Optoelectronic module and method for producing an optoelectronic module

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6889921B2 (en) * 2002-09-30 2005-05-10 Illinois Tool Works Inc. Bell cup skirt
DE10324074B4 (en) * 2003-05-27 2006-01-26 Dürr Systems GmbH Bell plate for a rotary atomizer
GB2443431B (en) * 2006-11-02 2008-12-03 Siemens Ag Fuel-injector nozzle
JP5490369B2 (en) * 2008-03-12 2014-05-14 ランズバーグ・インダストリー株式会社 Rotary electrostatic coating apparatus and coating pattern control method
WO2014055432A1 (en) * 2012-10-01 2014-04-10 Graco Minnesota, Inc. Spray tip assembly for electrostatic spray gun
FR3004661B1 (en) * 2013-04-22 2017-06-02 Sames Tech LIQUID COATING PRODUCT ELECTROSTATIC PROJECTOR AND PROJECTION INSTALLATION COMPRISING SUCH A PROJECTOR
FR3012985B1 (en) * 2013-11-12 2016-12-09 Sames Tech ELECTROSTATIC COATING PRODUCT PROJECTOR AND PROJECTION INSTALLATION COMPRISING SUCH A PROJECTOR
USD910717S1 (en) 2018-07-31 2021-02-16 Hotstart, Inc. Rotary atomizer
US20200041130A1 (en) 2018-07-31 2020-02-06 Hotstart, Inc. Combustor Systems
CN109530115A (en) * 2019-01-10 2019-03-29 深圳浥清环保科技有限公司 A kind of Centrifugal Electrostatic atomising device

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901178A (en) * 1956-08-30 1959-08-25 Edward O Norris Spraying apparatus
FR1438510A (en) * 1965-03-26 1966-05-13 Sames Mach Electrostat Improvements to electrostatic coating
SE438966B (en) * 1978-12-04 1985-05-28 Gema Ransburg Ag SPRAY DEVICE FOR POWDER WITH SPRAY GAS SPECIFICALLY INTRODUCED IN THE NOZZLE OPENING
BE882450A (en) * 1980-03-26 1980-07-16 Ransburg G M B H DEVICE FOR ELECTROSTATIC DISPERSION IN A SHOWER OF COATING SUBSTANCE
JPS5867368A (en) * 1981-10-16 1983-04-21 Trinity Ind Corp Method and device for electrostatic painting
GB2119678B (en) * 1982-05-13 1986-07-02 Nat Res Dev Spraying
DE8224329U1 (en) * 1982-08-28 1983-01-05 Hermann Behr & Sohn Gmbh & Co, 7121 Ingersheim DEVICE FOR FOGGING LIQUID COLOR
DE3241504A1 (en) 1982-10-21 1984-04-26 Basf Farben + Fasern Ag, 2000 Hamburg DEVICE AND METHOD FOR ELECTROSTATICALLY COVERING OBJECTS WITH FLUIDS
FR2587919B1 (en) * 1985-10-02 1988-05-27 Sames Sa ELECTROSTATIC PROJECTION APPARATUS PROTECTED AGAINST ELECTRIC ARC
US4737897A (en) 1986-10-29 1988-04-12 Honeywell Inc. Regulated high voltage dc-dc converter with remotely switched output polarity control
DE3705815A1 (en) * 1987-02-24 1988-09-01 Kopperschmidt Mueller & Co ELECTROSTATIC SPRAY GUN
FR2692501B1 (en) * 1992-06-22 1995-08-04 Sames Sa DEVICE FOR ELECTROSTATIC PROJECTION OF LIQUID COATING PRODUCT WITH ROTATING SPRAY HEAD.
FR2698564B1 (en) 1992-12-01 1995-03-03 Sames Sa Device for spraying a coating product with a rotary spraying element and tool for mounting and dismounting such a rotary element.
AU6022996A (en) * 1995-05-19 1996-11-29 Nordson Corporation Powder spray gun with rotary distributor
US5957395A (en) * 1997-10-21 1999-09-28 Illinois Tool Works Inc. Safe charging

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9949982A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8031992B2 (en) 2004-05-07 2011-10-04 Finisar Corporation Optoelectronic module and method for producing an optoelectronic module

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FR2776946A1 (en) 1999-10-08
PL343080A1 (en) 2001-07-30
CN1292731A (en) 2001-04-25
WO1999049982A1 (en) 1999-10-07
CA2320880A1 (en) 1999-10-07
CN1120056C (en) 2003-09-03
US6347754B1 (en) 2002-02-19
KR20010041463A (en) 2001-05-25
AU2941399A (en) 1999-10-18
KR100564289B1 (en) 2006-03-29
TR200002697T2 (en) 2000-12-21
TW429168B (en) 2001-04-11
ES2203089T3 (en) 2004-04-01
JP2002509795A (en) 2002-04-02
DE69909605T2 (en) 2004-04-15
DE69909605D1 (en) 2003-08-21
HUP0102390A2 (en) 2001-10-28
BR9908740A (en) 2000-11-21
FR2776946B1 (en) 2000-05-26
EP1068022B1 (en) 2003-07-16

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