EP3694651B1 - Nozzle for a spraying device - Google Patents

Nozzle for a spraying device Download PDF

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Publication number
EP3694651B1
EP3694651B1 EP18826415.4A EP18826415A EP3694651B1 EP 3694651 B1 EP3694651 B1 EP 3694651B1 EP 18826415 A EP18826415 A EP 18826415A EP 3694651 B1 EP3694651 B1 EP 3694651B1
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EP
European Patent Office
Prior art keywords
nozzle
opening
pavilion
air
blades
Prior art date
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Active
Application number
EP18826415.4A
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German (de)
French (fr)
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EP3694651A1 (en
Inventor
Josep GODIA
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Exel Industries SA
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Exel Industries SA
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3026—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a gate valve, a sliding valve or a cock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/3086—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a grooved body, which is movable in the outlet orifice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/025—Nozzles having elongated outlets, e.g. slots, for the material to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages

Definitions

  • the present invention relates to a nozzle for a spray device.
  • a spraying device is conventionally used, carried by an agricultural machine, such as a tractor or a trailer, in order to traverse a plantation of plants, advantageously in line, such as trees or vines, and to make it possible to spray said plants with a product. phytosanitary.
  • an air circuit brings propellant air to a nozzle.
  • the propellant air enters through an inlet of the nozzle, crosses it right through and comes out through an outlet opening, in the form of a jet of air directed towards the plants to be treated.
  • the nozzle performs a function of shaping the air jet and its distribution to the plants to be treated.
  • the phytosanitary product is dispersed at the outlet opening of the nozzle in order to be carried or blown by the air jet into the foliage of the plants to be treated.
  • a plant protection product spray nozzle is disclosed in FR 2912601 A1 .
  • the present invention overcomes this drawback by providing a nozzle for a spray device according to claim 1 and comprising, at its distal end, a horn, the opening of which comprises at least one tooth.
  • the entire outline of the opening is serrated.
  • a tooth has a height and / or a width of between 1 and 50% of the length of the opening.
  • the interior of the nozzle such as the interior of the roof, comprises pins and / or blades.
  • the nozzle further comprises a rotary valve arranged in the pavilion, where the interior of the valve comprises pins and / or blades.
  • a pin or a blade has a height of between 1 and 50% of the length of the opening.
  • the presence of teeth at the outlet opening of the nozzle or of pins and / or blades inside the nozzle tends to disturb the flow of the air jet.
  • the air jet thus rendered turbulent increases its chances of deflecting the screen sheet and thus increases the penetration of the treatment into the foliage.
  • the invention also relates to a spray device, comprising such a nozzle.
  • a nozzle 2 forms a pipe suitable for transporting the propellant air, typically coming from a turbine.
  • nozzle is understood to mean an assembly configured to provide a mixture of a plant protection product with the propellant air to form an aerosol, that is to say to spray and diffuse the aerosol.
  • this nozzle is removable integrally from the wall which carries it to facilitate maintenance.
  • the air enters through an air inlet 31 made in a sleeve 3.
  • the air typically arrives from above. It is deflected by an elbow in the sleeve 3, in order to continue its course substantially horizontally.
  • the sleeve 3 is extended, in continuity, by a pavilion 5 in charge of distributing the propellant air.
  • the horn 5 forms the distal end of the nozzle 2 and ends at its opening 51.
  • the term “opening” is used here to mean the terminal edge of the horn 5.
  • this opening 51 of the pavilion 5 comprises at least one tooth 54, 55, 56.
  • the objective of this at least one tooth 54, 55, 56 is to disturb the jet of air leaving the nozzle in order to make it turbulent, so as to agitate the leaves, to increase the penetration of the phytosanitary product and to avoid a risk of masking by a screen sheet.
  • teeth 54, 55, 56 along the contour of the opening 51 is all the more advantageously disturbing for the air jet as the teeth cover a significant length of the contour of the opening 51. Also according to one embodiment preferably the entire contour of the opening 51 is serrated.
  • the flag 5 is configurable by means of two flaps 52, 53 movable relative to the body 57 of the flag, in order to vary the size of the opening 51 and the opening angle of the spray jet.
  • This characteristic is advantageous in that a more open pavilion 5 makes it possible to spray at a shorter distance, for closer plants. On the contrary, a more closed pavilion 5 makes it possible to spray at a greater distance, for more distant plants.
  • Each shutter 52, 53 is preferably independently adjustable.
  • the axis of articulation of a shutter is preferably horizontal. As before, the adjustment can be continuous or according to discrete positions. A means of locking in position is advantageously used to allow the adjustment to resist jolts.
  • the outline of the opening 51 is shared between the three parts 57, 52, 53. Also, at least one tooth 54 is disposed on the part of the opening 51 produced by the body 57, at least one tooth 55 is disposed. on the part of the opening 51 produced by the shutter 52 and at least one tooth 56 is arranged on the part of the opening 51 produced by the shutter 53.
  • teeth 54, 55, 56 have any profile, for example triangular.
  • the height and / or the modulus of a tooth 54, 55, 56 is between 1 and 50% of the length of the opening 51 of the pavilion 5.
  • a significant creating effect of turbulence is obtained by teeth 54, 55, 56 arranged on the opening 51.
  • This effect is further increased by placing inside, for example on at least one internal wall of the nozzle 2, pins. 82 and / or blades 81.
  • the term “internal wall” is understood here to mean preferably a wall in contact with the air flow when it passes through the nozzle 2.
  • These pins 82 and / or blades 81, extending substantially transversely to the direction of the air flow are intended to disturb the flow of air when it passes through the nozzle 2 and particularly when it runs along the internal walls.
  • a wall lined with pins and / or blades can be any internal wall. It may be the internal wall of the sleeve 3. However, the disturbing effect obtained is all the more important the closer to the outlet. Also the internal wall of the pavilion 5 is preferred.
  • the pins 82 are substantially point-like and have a height of between 1 and 50% of the length of the opening 51 of the roof 5.
  • the blades 81 have any shapes, for example linear or in waves, of any length.
  • the slats 81 have a height of between 1 and 50% of the length of the opening 51 of the pavilion 5.
  • the nozzle 2 also comprises a closure means 8, in the form of a plug 8.
  • This plug 8 is arranged, advantageously in the horn 5 and its rotation makes it possible to vary the useful section of the horn 5 / of the nozzle 2 .
  • the figure 3 shows an open 8 bushel and the figure 4 shows a closed 8 bushel.
  • the internal walls in contact with the air are no longer those of the flag 5, but those of the valve 8.
  • the internal walls of the valve 8 include pins. 82 and / or blades 81.
  • the plug 8 as shown has two air passage openings and therefore four internal walls. The two central walls are here covered with blades 81, while the two side walls are covered with pins 82. Such an arrangement is of course illustrative.
  • the invention also relates to a spray device comprising such a nozzle 2.
  • This nozzle is more commonly referred to as a diffuser.
  • This nozzle forms an assembly or block which is configured to be selectively mountable and removable in a single piece from the wall which carries it, preferably without tools.
  • this diffuser comprises a channel intended to carry the air from its inlet to its outlet.
  • This channel is provided with at least one protuberance shaped to act on the air flow. By acting it is understood that the protuberances can guide the air flow. It then resembles lamellae as can be seen on the right part of the figure 4 .
  • the protuberances can disturb the air flow leaving the diffuser.
  • These protuberances then have the shape of a pin and / or ribs arranged in the channel.
  • the protuberances are completed and / or replaced by elements added to the channel.
  • the diffuser does not include movable shutters at the outlet.

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  • Nozzles (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Catching Or Destruction (AREA)

Description

La présente invention concerne une buse pour un dispositif de pulvérisation. Un dispositif de pulvérisation est classiquement utilisé, porté par une machine agricole, tel un tracteur ou une remorque, afin de parcourir une plantation de végétaux, avantageusement en ligne, tel des arbres ou de la vigne, et permettre de pulvériser sur lesdits végétaux un produit phytosanitaire.The present invention relates to a nozzle for a spray device. A spraying device is conventionally used, carried by an agricultural machine, such as a tractor or a trailer, in order to traverse a plantation of plants, advantageously in line, such as trees or vines, and to make it possible to spray said plants with a product. phytosanitary.

Afin de réaliser la pulvérisation, un circuit d'air apporte un air propulseur jusqu'à une buse. L'air propulseur entre par une entrée de la buse, la traverse de part en part et ressort par une ouverture en sortie, sous forme d'un jet d'air dirigé vers les végétaux à traiter. La buse assure une fonction de mise en forme du jet d'air et sa distribution vers les végétaux à traiter. Le produit phytosanitaire est dispersé à l'ouverture de sortie de la buse afin d'être porté ou soufflé par le jet d'air dans le feuillage des végétaux à traiter.In order to carry out the spraying, an air circuit brings propellant air to a nozzle. The propellant air enters through an inlet of the nozzle, crosses it right through and comes out through an outlet opening, in the form of a jet of air directed towards the plants to be treated. The nozzle performs a function of shaping the air jet and its distribution to the plants to be treated. The phytosanitary product is dispersed at the outlet opening of the nozzle in order to be carried or blown by the air jet into the foliage of the plants to be treated.

Une buse de pulvérisation de produit phytosanitaire est divulguée dans FR 2912601 A1 .A plant protection product spray nozzle is disclosed in FR 2912601 A1 .

Il peut arriver que le jet d'air rencontre une feuille d'un des végétaux, sensiblement transverse au jet d'air, et formant écran. Un tel écran est pénalisant en ce qu'il empêche une pénétration profonde dans l'épaisseur du feuillage du produit phytosanitaire.It may happen that the air jet meets a leaf of one of the plants, substantially transverse to the air jet, and forming a screen. Such a screen is penalizing in that it prevents deep penetration into the thickness of the foliage of the phytosanitary product.

Aussi il est recherché un moyen d'éviter ou d'atténuer les effets de ce problème.Also it is sought a way to avoid or mitigate the effects of this problem.

La présente invention remédie à cet inconvénient en proposant une buse pour dispositif de pulvérisation selon la revendication 1 et comprenant, à son extrémité distale, un pavillon dont l'ouverture comprend au moins une dent.The present invention overcomes this drawback by providing a nozzle for a spray device according to claim 1 and comprising, at its distal end, a horn, the opening of which comprises at least one tooth.

Selon une autre caractéristique, tout le contour de l'ouverture est dentelé.According to another characteristic, the entire outline of the opening is serrated.

Selon une autre caractéristique, une dent présente une hauteur et/ou une largeur comprise entre 1 et 50% de la longueur de l'ouverture.According to another characteristic, a tooth has a height and / or a width of between 1 and 50% of the length of the opening.

Selon l'invention l'intérieur de la buse, tel l'intérieur du pavillon, comprend des picots et/ou des lames.According to the invention, the interior of the nozzle, such as the interior of the roof, comprises pins and / or blades.

Selon une autre caractéristique, la buse comprend encore un boisseau rotatif disposé dans le pavillon, où l'intérieur du boisseau comprend des picots et/ou des lames.According to another characteristic, the nozzle further comprises a rotary valve arranged in the pavilion, where the interior of the valve comprises pins and / or blades.

Selon une autre caractéristique, un picot ou une lame présente une hauteur comprise entre 1 et 50% de la longueur de l'ouverture.According to another characteristic, a pin or a blade has a height of between 1 and 50% of the length of the opening.

Avantageusement, la présence de dent à l'ouverture de sortie de la buse ou de picots et/ou lames à l'intérieur de la buse tend à perturber l'écoulement du jet d'air. En cas de feuille formant écran au jet d'air, le jet d'air ainsi rendu turbulent, augmente ses chances de dévier la feuille écran et ainsi augmente la pénétration du traitement dans le feuillage.Advantageously, the presence of teeth at the outlet opening of the nozzle or of pins and / or blades inside the nozzle tends to disturb the flow of the air jet. In the case of a sheet forming a screen to the air jet, the air jet thus rendered turbulent increases its chances of deflecting the screen sheet and thus increases the penetration of the treatment into the foliage.

L'invention concerne encore un dispositif de pulvérisation, comprenant une telle buse.The invention also relates to a spray device, comprising such a nozzle.

D'autres caractéristiques, détails et avantages de l'invention ressortiront plus clairement de la description détaillée donnée ci-après à titre indicatif en relation avec des dessins sur lesquels :

  • la figure 1-5 illustrent en vue perspective un mode de réalisation possible d'une buse selon l'invention,
  • les figures 1 et 2 présente une buse entière,
  • les figures 3 et 4 présente une buse coupée selon un plan longitudinal,
  • la figure 5 présente une vue éclatée.
Other characteristics, details and advantages of the invention will emerge more clearly from the detailed description given below by way of indication in relation to the drawings in which:
  • the figure 1-5 illustrate in perspective view a possible embodiment of a nozzle according to the invention,
  • the figures 1 and 2 has a whole nozzle,
  • the figures 3 and 4 has a nozzle cut along a longitudinal plane,
  • the figure 5 shows an exploded view.

Une buse 2 forme une conduite apte à transporter l'air propulseur, typiquement issu d'une turbine.A nozzle 2 forms a pipe suitable for transporting the propellant air, typically coming from a turbine.

On entend par le vocable « buse » un ensemble configuré pour assurer un mélange d'un produit phytosanitaire avec l'air propulseur pour former un aérosol, c'est-à-dire pour pulvériser et diffuser l'aérosol. De préférence, cette buse est amovible d'un seul tenant de la paroi qui la porte pour en faciliter la maintenance.The term “nozzle” is understood to mean an assembly configured to provide a mixture of a plant protection product with the propellant air to form an aerosol, that is to say to spray and diffuse the aerosol. Preferably, this nozzle is removable integrally from the wall which carries it to facilitate maintenance.

Tel que plus particulièrement visible à la figure 1, l'air entre par une entrée d'air 31 pratiquée dans un manchon 3. L'air arrive typiquement du haut. Il est dévié par un coude dans le manchon 3, afin de poursuivre son parcours sensiblement horizontalement. Le manchon 3 est prolongé, en continuité, par un pavillon 5 en charge de la diffusion de l'air propulseur. Tel que plus particulièrement visible à la figure 2 le pavillon 5 forme l'extrémité distale de la buse 2 et se termine au niveau de son ouverture 51. On entend ici par ouverture le bord terminal du pavillon 5.As more particularly visible at the figure 1 , the air enters through an air inlet 31 made in a sleeve 3. The air typically arrives from above. It is deflected by an elbow in the sleeve 3, in order to continue its course substantially horizontally. The sleeve 3 is extended, in continuity, by a pavilion 5 in charge of distributing the propellant air. As more particularly visible at the figure 2 the horn 5 forms the distal end of the nozzle 2 and ends at its opening 51. The term “opening” is used here to mean the terminal edge of the horn 5.

Selon une caractéristique importante, cette ouverture 51 du pavillon 5 comprend au moins une dent 54, 55, 56. L'objectif de cette au moins une dent 54, 55, 56 est de perturber le jet d'air sortant de la buse afin de le rendre turbulent, de manière à agiter les feuilles, pour augmenter la pénétration du produit phytosanitaire et éviter un risque de masquage par une feuille écran.According to an important characteristic, this opening 51 of the pavilion 5 comprises at least one tooth 54, 55, 56. The objective of this at least one tooth 54, 55, 56 is to disturb the jet of air leaving the nozzle in order to make it turbulent, so as to agitate the leaves, to increase the penetration of the phytosanitary product and to avoid a risk of masking by a screen sheet.

La présence de dents 54, 55, 56 le long du contour de l'ouverture 51 est d'autant plus avantageusement perturbante pour le jet d'air que les dents recouvrent une longueur importante du contour de l'ouverture 51. Aussi selon un mode de réalisation préférentiel tout le contour de l'ouverture 51 est dentelé.The presence of teeth 54, 55, 56 along the contour of the opening 51 is all the more advantageously disturbing for the air jet as the teeth cover a significant length of the contour of the opening 51. Also according to one embodiment preferably the entire contour of the opening 51 is serrated.

Selon le mode de réalisation illustré, le pavillon 5 est configurable au moyen de deux volets 52, 53 mobiles relativement au corps 57 de pavillon, afin de varier la taille de l'ouverture 51 et l'angle d'ouverture du jet pulvérisé.According to the illustrated embodiment, the flag 5 is configurable by means of two flaps 52, 53 movable relative to the body 57 of the flag, in order to vary the size of the opening 51 and the opening angle of the spray jet.

Cette caractéristique est avantageuse en ce qu'un pavillon 5 plus ouvert permet de pulvériser à plus courte distance, pour des végétaux plus proches. Au contraire un pavillon 5 plus fermé permet de pulvériser à plus grande distance, pour des végétaux plus éloignés.This characteristic is advantageous in that a more open pavilion 5 makes it possible to spray at a shorter distance, for closer plants. On the contrary, a more closed pavilion 5 makes it possible to spray at a greater distance, for more distant plants.

Chaque volet 52, 53 est préférentiellement réglable indépendamment. L'axe d'articulation d'un volet est préférentiellement horizontal. Comme précédemment le réglage peut être continu ou selon des positions discrètes. Un moyen de blocage en position est avantageusement utilisé pour permettre au réglage de résister aux secousses.Each shutter 52, 53 is preferably independently adjustable. The axis of articulation of a shutter is preferably horizontal. As before, the adjustment can be continuous or according to discrete positions. A means of locking in position is advantageously used to allow the adjustment to resist jolts.

Aussi le contour de l'ouverture 51 est partagé entre les trois pièces 57, 52, 53. Aussi, au moins une dent 54 est disposée sur la partie de l'ouverture 51 réalisée par le corps 57, au moins une dent 55 est disposée sur la partie de l'ouverture 51 réalisée par le volet 52 et au moins une dent 56 est disposée sur la partie de l'ouverture 51 réalisée par le volet 53.Also the outline of the opening 51 is shared between the three parts 57, 52, 53. Also, at least one tooth 54 is disposed on the part of the opening 51 produced by the body 57, at least one tooth 55 is disposed. on the part of the opening 51 produced by the shutter 52 and at least one tooth 56 is arranged on the part of the opening 51 produced by the shutter 53.

Ces dents 54, 55, 56 présentent un profil quelconque, par exemple triangulaire. La hauteur et/ou le module d'une dent 54, 55, 56 est compris entre 1 et 50% de la longueur de l'ouverture 51 du pavillon 5.These teeth 54, 55, 56 have any profile, for example triangular. The height and / or the modulus of a tooth 54, 55, 56 is between 1 and 50% of the length of the opening 51 of the pavilion 5.

Un effet créateur de turbulences important est obtenu par des dents 54, 55, 56 disposées sur l'ouverture 51. Cet effet est encore augmenté en disposant à l'intérieur, par exemple sur au moins une paroi interne de la buse 2, des picots 82 et/ou des lames 81. On entend ici par paroi interne de préférence une paroi en contact avec le flux d'air lors de sa traversée de la buse 2. Ces picots 82 et/ou lames 81, d'extension sensiblement transverse à la direction du flux d'air ont pour objectif de perturber l'écoulement de l'air lorsqu'il traverse la buse 2 et particulièrement lorsqu'il longe les parois internes. Une paroi tapissée de picots et/ou de lames peut être toute paroi interne. Il peut s'agir de la paroi interne du manchon 3. Cependant l'effet perturbateur obtenu est d'autant plus important que l'on se rapproche de la sortie. Aussi la paroi interne du pavillon 5 est préférée.A significant creating effect of turbulence is obtained by teeth 54, 55, 56 arranged on the opening 51. This effect is further increased by placing inside, for example on at least one internal wall of the nozzle 2, pins. 82 and / or blades 81. The term “internal wall” is understood here to mean preferably a wall in contact with the air flow when it passes through the nozzle 2. These pins 82 and / or blades 81, extending substantially transversely to the direction of the air flow are intended to disturb the flow of air when it passes through the nozzle 2 and particularly when it runs along the internal walls. A wall lined with pins and / or blades can be any internal wall. It may be the internal wall of the sleeve 3. However, the disturbing effect obtained is all the more important the closer to the outlet. Also the internal wall of the pavilion 5 is preferred.

Les picots 82 sont sensiblement ponctuels et présentent une hauteur comprise entre 1 et 50% de la longueur de l'ouverture 51 du pavillon 5. Les lames 81 présentent des formes quelconques, par exemple linéaires ou en vagues, de longueurs quelconques. Les lames 81 présentent une hauteur comprise entre 1 et 50% de la longueur de l'ouverture 51 du pavillon 5.The pins 82 are substantially point-like and have a height of between 1 and 50% of the length of the opening 51 of the roof 5. The blades 81 have any shapes, for example linear or in waves, of any length. The slats 81 have a height of between 1 and 50% of the length of the opening 51 of the pavilion 5.

Selon une autre caractéristique, plus particulièrement visible aux figures 3-5, la buse 2 comprend encore un moyen d'obturation 8, sous la forme d'un boisseau 8. Ce boisseau 8 est disposé, avantageusement dans le pavillon 5 et sa rotation permet de varier la section utile du pavillon 5/de la buse 2. La figure 3 montre un boisseau 8 ouvert et la figure 4 montre un boisseau 8 fermé.According to another characteristic, more particularly visible to figures 3-5 , the nozzle 2 also comprises a closure means 8, in the form of a plug 8. This plug 8 is arranged, advantageously in the horn 5 and its rotation makes it possible to vary the useful section of the horn 5 / of the nozzle 2 . The figure 3 shows an open 8 bushel and the figure 4 shows a closed 8 bushel.

Dans ce cas les parois internes en contact avec l'air ne sont plus celles du pavillon 5, mais celles du boisseau 8. Aussi, les parois internes du boisseau 8 comprennent des picots 82 et/ou des lames 81. A noter que le boisseau 8 tel que représenté comporte deux ouvertures de passage de l'air et donc quatre parois internes. Les deux parois centrales sont ici recouvertes de lames 81, tandis que les deux parois latérales sont recouvertes de picots 82. Un tel arrangement est bien sûr illustratif.In this case the internal walls in contact with the air are no longer those of the flag 5, but those of the valve 8. Also, the internal walls of the valve 8 include pins. 82 and / or blades 81. Note that the plug 8 as shown has two air passage openings and therefore four internal walls. The two central walls are here covered with blades 81, while the two side walls are covered with pins 82. Such an arrangement is of course illustrative.

L'invention concerne encore un dispositif de pulvérisation comprenant une telle buse 2.The invention also relates to a spray device comprising such a nozzle 2.

Cette buse est plus communément appelée diffuseur. Cette buse forme un ensemble ou bloc qui est configuré pour être sélectivement montable et démontable d'un seul tenant de la paroi qui la porte, préférentiellement sans outillage.This nozzle is more commonly referred to as a diffuser. This nozzle forms an assembly or block which is configured to be selectively mountable and removable in a single piece from the wall which carries it, preferably without tools.

Selon un mode de réalisation alternatif ce diffuseur comprend un canal destiné à porter l'air de son entrée à sa sortie. Ce canal est muni d'au moins une protubérance conformé pour agir sur le flux d'air. Par agir on comprend que les protubérances peuvent guider le flux d'air. Elle s'apparente alors à des lamelles comme on peut le voir sur la partie droite de la figure 4.According to an alternative embodiment, this diffuser comprises a channel intended to carry the air from its inlet to its outlet. This channel is provided with at least one protuberance shaped to act on the air flow. By acting it is understood that the protuberances can guide the air flow. It then resembles lamellae as can be seen on the right part of the figure 4 .

Alternativement les protubérances peuvent perturber le flux d'air en sortie du diffuseur. Ces protubérances présentent alors la forme de picot et/ou de nervures disposées dans le canal.Alternatively, the protuberances can disturb the air flow leaving the diffuser. These protuberances then have the shape of a pin and / or ribs arranged in the channel.

Alternativement les protubérances sont complétées et/ou remplacées par des éléments rapportés dans le canal.Alternatively, the protuberances are completed and / or replaced by elements added to the channel.

Selon une alternative le diffuseur ne comprend pas de volets mobiles en sortie.According to an alternative, the diffuser does not include movable shutters at the outlet.

Il est bien évidemment possible de combiner les différents modes de réalisation décrit dans cette demande tout en restant dans l'étendue des revendications.It is obviously possible to combine the different embodiments described in this application while remaining within the scope of the claims.

Claims (7)

  1. A nozzle (2) for a spraying device and forming a pipe able to transport propellant air and comprising, on its distal end, a pavilion (5), characterised in that an end edge of the pavilion (5), forming an opening (51) of the pavilion (5), comprises at least one tooth (54, 55, 56) and in that the interior of the nozzle (2) comprises spurs (82) and/or blades (81).
  2. The nozzle (2) according to claim 1, wherein a tooth (54, 55, 56) has a height and/or a width comprised between 1 and 50% of a length of the opening (51).
  3. The nozzle (2) according to any one of claims 1 or 2, wherein the entire contour of the opening (51) is serrated.
  4. The nozzle (2) according to any one of claims 1 to 3, wherein the interior of the pavilion (5) comprises the spurs (82) and/or the blades (81).
  5. The nozzle (2) according to any one of claims 1 to 4, further comprising a rotary plug (8) disposed in the pavilion (5), where the interior of the plug (8) comprises the spurs (82) and/or the blades (81).
  6. The nozzle (2) according to any one of claims 1 to 5, wherein a spur (82) or a blade (81) has a height comprised between 1 and 50% of the length of the opening (51).
  7. A spraying device, characterised in that it comprises a nozzle (2) according to any one of claims 1 to 6.
EP18826415.4A 2017-11-27 2018-11-27 Nozzle for a spraying device Active EP3694651B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1761230A FR3074070B1 (en) 2017-11-27 2017-11-27 NOZZLE FOR SPRAYING DEVICE
PCT/FR2018/053004 WO2019102168A1 (en) 2017-11-27 2018-11-27 Nozzle for a spraying device

Publications (2)

Publication Number Publication Date
EP3694651A1 EP3694651A1 (en) 2020-08-19
EP3694651B1 true EP3694651B1 (en) 2021-11-17

Family

ID=61003222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18826415.4A Active EP3694651B1 (en) 2017-11-27 2018-11-27 Nozzle for a spraying device

Country Status (4)

Country Link
EP (1) EP3694651B1 (en)
ES (1) ES2900319T3 (en)
FR (1) FR3074070B1 (en)
WO (1) WO2019102168A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1837575A (en) * 1929-11-18 1931-12-22 Elmer G Munz Spray head
US3708119A (en) * 1970-09-16 1973-01-02 Vicard Pierre G Spraying nozzles
FR2912601B1 (en) * 2007-02-21 2010-01-01 Exel Ind DIFFUSER OF LIQUID PRODUCTS COMPRISING A DEFLECTOR AND SPRAY EQUIPMENT PROVIDED WITH SUCH A DEFLECTOR
CN106660059B (en) * 2014-08-15 2020-03-13 Dlh鲍尔斯公司 Compact split shear washer nozzle

Also Published As

Publication number Publication date
FR3074070B1 (en) 2020-11-27
ES2900319T3 (en) 2022-03-16
WO2019102168A1 (en) 2019-05-31
EP3694651A1 (en) 2020-08-19
FR3074070A1 (en) 2019-05-31

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