EP0561696B1 - Dispensing nozzle - Google Patents

Dispensing nozzle Download PDF

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Publication number
EP0561696B1
EP0561696B1 EP19930400678 EP93400678A EP0561696B1 EP 0561696 B1 EP0561696 B1 EP 0561696B1 EP 19930400678 EP19930400678 EP 19930400678 EP 93400678 A EP93400678 A EP 93400678A EP 0561696 B1 EP0561696 B1 EP 0561696B1
Authority
EP
European Patent Office
Prior art keywords
peripheral
central
chamber
cup
dispensing nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19930400678
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German (de)
French (fr)
Other versions
EP0561696A1 (en
Inventor
Gilles Baudin
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.)
LOreal SA
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LOreal SA
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Publication date
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • 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
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
    • 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
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
    • B65D83/20—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps

Definitions

  • the invention relates to a dispensing nozzle for dispensing a fluid to be dispensed.
  • a dispensing nozzle which comprises a central supply chamber disposed around an axis and an outlet channel disposed along this axis.
  • the pressure can be obtained in different ways, for example manually, by action on a bulb fitted to the container containing the fluid to be dispensed, or on the container itself provided flexible, or on a push button for actuating a pump; the pressure applied to the fluid can also be obtained by the presence in the container of another fluid introduced under pressure, whether it is gaseous or liquefied, propelling the fluid to be dispensed.
  • the quality of the distribution essentially lies in the fineness of the particles sprayed; hitherto, shapes given to the distribution chamber and / or to the outlet channel have made it possible to improve the spraying of the fluid to be distributed and to obtain a suitable distribution; but the number of parameters that can act on the fineness of this spraying is limited, and these parameters had to be kept within close tolerances, which increases the cost price and is not always compatible with mass production.
  • US-A-4 347 982 describes a fuel oil burner nose which does not have a cup or spray chamber. Spray vapors are sent by an external sleeve around the fuel outlet so as to strike the jet of fuel and spray it.
  • EP-A-0 309 010 relates to a nozzle as defined in the preamble of claim 1.
  • the present invention relates to a dispensing nozzle making it possible to obtain a spraying of the fluid to be dispensed as suitable, but under easier and more flexible industrialization conditions.
  • a distribution nozzle for the distribution of a fluid to be dispensed, under pressure, comprising a central supply chamber arranged around an axis and a central outlet channel in communication on the one hand with said central chamber and secondly with the outside, said outlet channel being disposed in the axis of said central chamber, the dispensing nozzle further comprising a peripheral supply chamber and a peripheral outlet channel in communication on the one hand with said peripheral chamber and on the other hand with said exterior peripheral chamber surrounding said central chamber and the peripheral channel surrounding said central channel, the two said chambers and said channel peripheral being arranged circumferentially around said axis of said central chamber, the peripheral chamber being intended to be supplied by a second fluid to be distributed, distinct from the first fluid supplying the central chamber, one of said first and second fluids being a gas, and l other a liquid, in which the central chamber is defined by a central cup fitted on a central end-piece carried by a support, between the internal face of said central cup and the external face of said central end-piece,
  • the central cup is also fitted inside the peripheral end piece, and advantageously, the peripheral cup is also fitted inside an external end piece of the support surrounding the peripheral end piece.
  • the central and / or peripheral supply chamber is cylindrical, or conical converging towards the outside, or hemispherical, or other.
  • the central outlet channel is cylindrical, or conical, advantageously converging towards the outside; preferably, it has a conical portion opening into the distribution chamber and a cylindrical portion opening to the outside.
  • the peripheral outlet channel is cylindrical or conical, advantageously diverging towards the outside.
  • a cup-shaped cap is fitted on the peripheral cup and in the external end piece of the support, and defines, in combination with the conical outer face of the peripheral cup, a plurality of conical passages converging towards the outside, distributed circumferentially around the axis, each passage having an inlet and an outlet, said inlet further away from the axis and more as wide as said outlet communicating with the outside, and said outlet also communicating with the outside in the vicinity of the outlet of the peripheral channel.
  • the present invention can be variously applied, for example to a dispensing pump, a dispensing valve, metering or not, a pear system .
  • the nozzle support is the actuation push button d 'A distribution pump intended to equip a dispenser container, one of the two fluids being the liquid to be dispensed present in the container and the other fluid the gas in the container, in particular when the gas in the container is under pressure.
  • the nozzle support is the dispensing valve of an aerosol can, one of the two fluids being the liquid to be dispensed and the other fluid the gaseous propellant of the liquid to be dispensed.
  • the nozzle support is the end of a compressible bottle, one of the two fluids being the liquid to be dispensed and the other fluid the air contained in the bottle above the level of the liquid.
  • the gaseous fluid can be a compressed gas or a liquefied gas, and preferably compressed air, or nitrogen.
  • the dispensing nozzle in FIG. 1, comprises a central cup 2 fitted on a central end piece 3 carried by a support 10; a central chamber 4 is thus defined by the internal face 5 of the central cup 2 and the external face 6 of the central end piece 3.
  • the bottom of the central cup 2 is crossed by a central outlet channel 7, and the cylindrical part said central cup 2 is fitted with a seal at 32 inside a peripheral end piece 13, of the support, surrounding the central end piece 3; the central cup 2 is held axially in the peripheral end piece 13, for example by clipping at 33.
  • a peripheral cup 11 is fitted onto the peripheral end piece 13, and, at sealing, at 34 inside an external end piece 28 carried by the support, the external end piece 28 surrounding the peripheral end piece 13; the peripheral cup 11 is held axially in the external end piece 28, for example by clipping at 35.
  • a peripheral chamber 36 is thus defined between the internal face 12 of the peripheral cup 11, the external face of the peripheral end piece 13, and the outside face 14 of the central cup 2.
  • the outside face of the bottom of the central cup 2 and the inside face of the bottom of the peripheral cup 11 are conical, so that the bottoms of the two cups being in the same plane perpendicular to the axis, a peripheral outlet channel 25 passing through the bottom of the peripheral cup has, when the cups are mounted in the support, an annular shape and surrounds the central channel 7.
  • the central chamber 4 is supplied with a first fluid by a supply inlet 9 and a clearance 8, for example a longitudinal groove in the inner face of the central cup 2, between the central cup 2 and the central sleeve 3, which game 8 opens into an annular space 9 at of the support, the supply inlet 9 opening into the annular space 9 at .
  • the peripheral chamber 36 is, in the same way, supplied with a second fluid by a supply inlet 15, an annular space 15 at and a longitudinal groove 16 formed on the internal face of the cylindrical wall of the peripheral cup 11.
  • the support 10 of the nozzle 1 is the push button of a valve for dispensing a conventional aerosol can, which, for this reason, will not be detailed here.
  • the supply inlet 9 communicates with the interior 19 of a tubular element 18 for actuating a valve which opens under the action of a force applied to the support 10, and the liquid contained in the container. is then sprayed outside, through the central channel 7, under the action of the propellant fluid contained in the container in the usual manner.
  • this same action on the push button puts the space of the container containing the propellant fluid into communication with the annular space 20, comprised between the tubular element 18 and a sheath 17, both carried by the button pusher 10, the annular space 20 communicating with the inlet 15 for supplying a second fluid, here the propellant; this propellant gas leaves through the peripheral channel 25 and, due to the conical shape of the peripheral chamber, this current of propellant gas collides, at the outlet, with the stream of liquid leaving the central channel 7; this arrangement allows better fractionation of the dispensed liquid, and therefore greater spray finesse.
  • the liquid and gas distribution sequences can be varied: it is, for example, advantageous to distribute gas first, then gas and liquid at the same time, and then again gas alone, which will clean by driving the central channel 7 thanks to the vacuum created by the gas stream.
  • the fractionation of the dispensed liquid can be adapted to its nature, in particular by adapting the central 7 and peripheral 25 channels, and / or the central 4 and peripheral 36 chambers.
  • the outer face of the bottom of the central cup 2 is in two tapered portions 14 a, 14 b, the angle of the part 14 a is more acute than that of the portion 14 b; thanks to this arrangement, the peripheral channel 25 is closer radially to the central channel 7.
  • the central and peripheral chambers have volumes, at the entrance, frustoconical annulars, limited, among others, by the conical portions 21 and 22 respectively of the internal faces of the central 2 and peripheral cups 11.
  • the hemispherical shape of the end of the external face of the central end piece, the part opposite the inner face 5 of the central cup 2 having a corresponding hemispherical shape, which inner face 5 of the central cup 2 being provided with helical fins 23, also visible in FIG. 3a, so as to provide the liquid with a vortex movement.
  • the central channel 7 has, here, a conical shape converging towards the outlet.
  • the bottom of the peripheral cup 11 is flat, as well as the outer face of the central cup 2 located opposite; the inner face of the bottom of the peripheral cup 11 is provided with fins 24, also visible in FIG. 3b; these fins 24 are plane, in planes parallel to the axis but not passing through the axis, and inclined at the same angle and in the same direction relative to the rays which pass through their end furthest from the axis: this arrangement makes it possible to provide the propellant gas, also, with a vortex movement; it will be noted that the vortices of liquid and gas are in opposite directions so as to increase the fractionation.
  • FIG. 3b the inner face of the bottom of the peripheral cup 11 is provided with fins 24, also visible in FIG. 3b; these fins 24 are plane, in planes parallel to the axis but not passing through the axis, and inclined at the same angle and in the same direction relative to the rays which pass through their end furthest from the axis: this arrangement makes it possible to provide the propellant gas, also, with
  • the peripheral channel is formed of two truncated cones, one, 25A, converging, and the other, 25B, diverging, the planar end perpendicular to the axis of the outlet of the central channel being disposed in line with the connection plane of the two trunks of cones 25A, 25B.
  • the variant nozzle comprises the advantageous arrangements of FIG. 3, namely the precompression of the fluids thanks to the frustoconical shapes 21, 22 of the internal faces of the cups, as well as of the swirl movements of the fluids;
  • the fins 26, 27 causing these vortex movements are all carried by the bottom of the central cup: these fins are of the type described according to FIG. 3b; the fins 26 are provided on the internal face of the central cup 2 and also visible in FIG. 4a, seen from the left of FIG. 4, and the fins 27 are provided on the external face of the central cup 2 and also visible on FIG. 4b, view from the right of FIG. 4.
  • the variant of Figure 4 is also advantageous by the relative arrangement and the constitution of the central and peripheral channels.
  • the central channel is conical converging outwardly 7a, and the conical peripheral channel diverge outwardly in 25 b; the two trunks of cones 7 a and 25 b are separated by a space 7 b in which the fluids meet; this provision venturi allows the compression of the liquid 7 to the meeting of the liquid and gas 7 b, depression of the mixture 25 b, and promotes the fineness and homogeneity of the spray.
  • the variant nozzle according to FIG. 5 is similar to that of FIG. 4, to which a cap 37 in the form of a cup has been added; the cap 37 consists of a cylindrical skirt 38 and a spherical cap 39, connected by radial ribs 30.
  • the skirt 38 is fitted with a seal, on the one hand, on the cylindrical outer face of the peripheral cup 11 clipped at 35 and, on the other hand, inside the external end piece 28, clipped at 40, also sealed.
  • the space between the inside face of the cap 39 and the outside face of the peripheral cup 11 defines a plurality of conical channels converging towards the outside, the outside face of the cup (11) being provided in conical shape, according to 29 in Figure 5; these channels distributed conferentially around the axis open on either side to the outside, having an inlet, distant from the axis, more wider than the exit near the axis; an annular outlet 31 is thus defined; this outlet 31 surrounds the outlet of the peripheral channel 25 b and is close to it; thanks to this arrangement, the vacuum prevailing at the outlet of the venturi 7 at , 7 b , 25 b sucks in outside air which passes through these channels and also comes to fractionate and aerate the sprayed fluid.
  • the example shown shows the application of the nozzle according to the invention to a valve for dispensing an aerosol can, but, of course, it can equip any container for dispensing a pressurized fluid: container provided with a pear, container fitted with a pump, flexible compressible container; in the latter case, the nozzle support is the end of a container, or compressible bottle, in which one of the fluids is the liquid to be dispensed, and, the other fluid, the air contained in the bottle at the - above the liquid level.

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Description

L'invention concerne une buse de distribution pour la distribution d'un fluide à distribuer.The invention relates to a dispensing nozzle for dispensing a fluid to be dispensed.

Pour distribuer un fluide, il est usuel de lui faire traverser, sous pression, une buse de distribution qui comporte une chambre centrale d'alimentation disposée autour d'un axe et un canal de sortie disposé selon cet axe. La pression peut être obtenue de différentes façons, par exemple manuellement, par action sur une poire équipant le récipient contenant le fluide à distribuer, ou sur le récipient lui-même prévu flexible, ou sur un bouton poussoir d'actionnement d'une pompe ; la pression appliquée au fluide peut être aussi obtenue par la présence dans le récipient d'un autre fluide introduit sous pression, qu'il soit gazeux ou liquéfié, propulsant le fluide à distribuer.To distribute a fluid, it is usual to make it pass, under pressure, a dispensing nozzle which comprises a central supply chamber disposed around an axis and an outlet channel disposed along this axis. The pressure can be obtained in different ways, for example manually, by action on a bulb fitted to the container containing the fluid to be dispensed, or on the container itself provided flexible, or on a push button for actuating a pump; the pressure applied to the fluid can also be obtained by the presence in the container of another fluid introduced under pressure, whether it is gaseous or liquefied, propelling the fluid to be dispensed.

La qualité de la distribution réside essentiellement dans la finesse des particules pulvérisées ; jusqu'ici, des formes données à la chambre de distribution et/ou au canal de sortie ont permis d'améliorer la pulvérisation du fluide à distribuer et d'obtenir une distribution convenable ; mais le nombre des paramètres pouvant agir sur la finesse de cette pulvérisation est limité, et ces paramètres ont dû être tenus dans des tolérances étroites, ce qui augmente le prix de revient et n'est pas toujours compatible avec une fabrication de grande série.The quality of the distribution essentially lies in the fineness of the particles sprayed; hitherto, shapes given to the distribution chamber and / or to the outlet channel have made it possible to improve the spraying of the fluid to be distributed and to obtain a suitable distribution; but the number of parameters that can act on the fineness of this spraying is limited, and these parameters had to be kept within close tolerances, which increases the cost price and is not always compatible with mass production.

US-A-4 347 982 décrit un nez de brûleur pour fuel qui ne comporte pas de coupelle ni de chambre de pulvérisation. Des vapeurs de pulvérisation sont envoyées par un manchon externe autour de la sortie du fuel de façon à venir frapper le jet de fuel et le pulvériser.US-A-4 347 982 describes a fuel oil burner nose which does not have a cup or spray chamber. Spray vapors are sent by an external sleeve around the fuel outlet so as to strike the jet of fuel and spray it.

EP-A-0 309 010 concerne une buse telle que définie dans le préambule de la revendication 1.EP-A-0 309 010 relates to a nozzle as defined in the preamble of claim 1.

La présente invention a pour objet une buse de distribution permettant d'obtenir une pulvérisation du fluide à distribuer aussi convenable, mais dans des conditions d'industrialisation plus aisées et plus souples.The present invention relates to a dispensing nozzle making it possible to obtain a spraying of the fluid to be dispensed as suitable, but under easier and more flexible industrialization conditions.

Ainsi, selon l'invention, une buse de distribution pour la distribution d'un fluide à distribuer, sous pression, comportant une chambre centrale d'alimentation disposée autour d'un axe et un canal de sortie central en communication d'une part avec ladite chambre centrale et d'autre part avec l'extérieur, ledit canal de sortie étant disposé dans l'axe de ladite chambre centrale, la buse de distribution comportant en outre une chambre périphérique d'alimentation et un canal de sortie périphérique en communication d'une part avec ladite chambre périphérique et d'autre part avec l'extérieur, ladite chambre périphérique entourant ladite chambre centrale et le canal périphérique entourant ledit canal central, les deux dites chambres et ledit canal périphérique étant disposés circonférentiellement autour dudit axe de ladite chambre centrale, la chambre périphérique étant destinée à être alimentée par un deuxième fluide à distribuer, distinct du premier fluide alimentant la chambre centrale, l'un desdits premier et deuxième fluides étant un gaz, et l'autre un liquide, dans laquelle la chambre centrale est définie par une coupelle centrale emmanchée sur un embout central porté par un support, entre la face intérieure de ladite coupelle centrale et la face extérieure dudit embout central, le canal de sortie central traversant le fond de ladite coupelle centrale; est caractérisée par le fait que la chambre périphérique est définie par une coupelle périphérique emmanchée sur un embout périphérique porté par le support, entre la face intérieure de ladite coupelle périphérique, la face extérieure dudit embout périphérique et la face extérieure de la coupelle centrale, le canal de sortie périphérique traversant le fond de ladite coupelle périphérique.Thus, according to the invention, a distribution nozzle for the distribution of a fluid to be dispensed, under pressure, comprising a central supply chamber arranged around an axis and a central outlet channel in communication on the one hand with said central chamber and secondly with the outside, said outlet channel being disposed in the axis of said central chamber, the dispensing nozzle further comprising a peripheral supply chamber and a peripheral outlet channel in communication on the one hand with said peripheral chamber and on the other hand with said exterior peripheral chamber surrounding said central chamber and the peripheral channel surrounding said central channel, the two said chambers and said channel peripheral being arranged circumferentially around said axis of said central chamber, the peripheral chamber being intended to be supplied by a second fluid to be distributed, distinct from the first fluid supplying the central chamber, one of said first and second fluids being a gas, and l other a liquid, in which the central chamber is defined by a central cup fitted on a central end-piece carried by a support, between the internal face of said central cup and the external face of said central end-piece, the central outlet channel passing through the bottom of said central cup; is characterized by the fact that the peripheral chamber is defined by a peripheral cup fitted on a peripheral end piece carried by the support, between the internal face of said peripheral end piece, the external face of said peripheral end piece and the external face of the central end piece, the peripheral outlet channel passing through the bottom of said peripheral cup.

De préférence, la coupelle centrale est également emmanchée à l'intérieur de l'embout périphérique, et avantageusement, la coupelle périphérique est également emmanchée à l'intérieur d'un embout externe du support entourant l'embout périphérique.Preferably, the central cup is also fitted inside the peripheral end piece, and advantageously, the peripheral cup is also fitted inside an external end piece of the support surrounding the peripheral end piece.

La chambre d'alimentation centrale et/ou périphérique est cylindrique, ou conique convergente vers l'extérieur, ou hémisphérique, ou autre.The central and / or peripheral supply chamber is cylindrical, or conical converging towards the outside, or hemispherical, or other.

Ces dispositions permettent, l'un des fluides étant un gaz et l'autre un liquide, un fractionnement du liquide par le gaz et donc une plus grande finesse de pulvérisation. Ce fractionnement est encore amélioré lorsque la chambre centrale et/ou périphérique est pourvue d'ailettes imprimant au fluide qui la traverse un mouvement tourbillonnaire.These provisions allow, one of the fluids being a gas and the other a liquid, a fractionation of the liquid by the gas and therefore greater spray finesse. This fractionation is further improved when the central and / or peripheral chamber is provided with fins imparting a vortex movement to the fluid passing through it.

Le canal de sortie central est cylindrique, ou conique, avantageusement convergent vers l'extérieur ; de préférence, il comporte une portion conique débouchant dans la chambre de distribution et une portion cylindrique débouchant à l'extérieur.The central outlet channel is cylindrical, or conical, advantageously converging towards the outside; preferably, it has a conical portion opening into the distribution chamber and a cylindrical portion opening to the outside.

Le canal de sortie périphérique est cylindrique ou conique, avantageusement divergent vers l'extérieur.The peripheral outlet channel is cylindrical or conical, advantageously diverging towards the outside.

Une coiffe en forme de coupelle est emmanchée sur la coupelle périphérique et dans l'embout externe du support, et définit, en combinaison avec la face extérieure conique de la coupelle périphérique, une pluralité de passages coniques convergents vers l'extérieur, répartis circonférentiellement autour de l'axe, chaque passage ayant une entrée et une sortie, ladite entrée plus éloignée de l'axe et plus large que ladite sortie communiquant avec l'extérieur, et ladite sortie communiquant également avec l'extérieur au voisinage de la sortie du canal périphérique.A cup-shaped cap is fitted on the peripheral cup and in the external end piece of the support, and defines, in combination with the conical outer face of the peripheral cup, a plurality of conical passages converging towards the outside, distributed circumferentially around the axis, each passage having an inlet and an outlet, said inlet further away from the axis and more as wide as said outlet communicating with the outside, and said outlet also communicating with the outside in the vicinity of the outlet of the peripheral channel.

Ainsi, l'air extérieur, aspiré par la dépression régnant à la sortie du canal périphérique, fractionne également le fluide pulvérisé et l'aère.Thus, the outside air, sucked in by the vacuum prevailing at the outlet of the peripheral channel, also breaks up the sprayed fluid and aerates it.

La présente invention peut être diversement appliquée, par exemple à une pompe de distribution, une valve de distribution, doseuse ou non, un système à poire....... Ainsi, le support de buse est le bouton poussoir d'actionnement d'une pompe de distribution destinée à équiper un bidon distributeur, l'un des deux fluides étant le liquide à distribuer présent dans le bidon et l'autre fluide le gaz du bidon, notamment lorsque le gaz du bidon est sous pression.The present invention can be variously applied, for example to a dispensing pump, a dispensing valve, metering or not, a pear system ....... Thus, the nozzle support is the actuation push button d 'A distribution pump intended to equip a dispenser container, one of the two fluids being the liquid to be dispensed present in the container and the other fluid the gas in the container, in particular when the gas in the container is under pressure.

En variante, le support de buse est la valve de distribution d'un bidon aérosol, l'un des deux fluides étant le liquide à distribuer et l'autre fluide le propulseur gazeux du liquide à distribuer.As a variant, the nozzle support is the dispensing valve of an aerosol can, one of the two fluids being the liquid to be dispensed and the other fluid the gaseous propellant of the liquid to be dispensed.

Selon une autre variante, le support de buse est l'extrémité d'un flacon comprimable, l'un des deux fluides étant le liquide à distribuer et l'autre fluide l'air contenu dans le flacon au-dessus du niveau du liquide.According to another variant, the nozzle support is the end of a compressible bottle, one of the two fluids being the liquid to be dispensed and the other fluid the air contained in the bottle above the level of the liquid.

Bien entendu, le fluide gazeux peut être un gaz comprimé ou un gaz liquéfié, et de préférence, de l'air comprimé, ou l'azote.Of course, the gaseous fluid can be a compressed gas or a liquefied gas, and preferably compressed air, or nitrogen.

Pour mieux faire comprendre l'objet de l'invention, on va décrire ci-après, à titre purement illustratif et non limitatif, un mode de réalisation représenté sur les dessins annexés.To better understand the object of the invention, there will be described below, purely by way of non-limiting illustration, an embodiment shown in the accompanying drawings.

Sur ces dessins :

  • la figure 1 représente, en coupe, une buse de distribution selon l'invention ;
  • la figure 2 représente, en coupe, une variante de la buse de distribution selon la figure 1 ;
  • la figure 3 montre, en coupe, une autre variante de buse de distribution selon l'invention ;
  • la figure 3a est une vue de côté montrant la face intérieure de la coupelle centrale de la buse selon la figure 3 ;
  • la figure 3b est une vue de côté montrant la face intérieure de la coupelle périphérique de la buse selon la figure 3 ;
  • la figure 4 est une coupe montrant une autre variante de buse selon l'invention ;
  • la figure 4a est une vue de côté montrant la face intérieure de la coupelle centrale de la buse selon la figure 4 ;
  • la figure 4b est une vue de côté montrant la face extérieure de la coupelle centrale de la buse selon la figure 4 ;
  • la figure 5 est une coupe montrant une autre variante de buse de distribution selon l'invention ;
  • la figure 5a est une vue de côté montrant la face intérieure de la coiffe, en forme de coupelle, de la buse selon la figure 5.
In these drawings:
  • Figure 1 shows, in section, a dispensing nozzle according to the invention;
  • 2 shows, in section, a variant of the dispensing nozzle according to Figure 1;
  • Figure 3 shows, in section, another variant of the dispensing nozzle according to the invention;
  • Figure 3a is a side view showing the inner face of the central cup of the nozzle according to Figure 3;
  • Figure 3b is a side view showing the inner face of the peripheral cup of the nozzle according to Figure 3;
  • Figure 4 is a section showing another variant of a nozzle according to the invention;
  • Figure 4a is a side view showing the inner face of the central cup of the nozzle according to Figure 4;
  • Figure 4b is a side view showing the outer face of the central cup of the nozzle according to Figure 4;
  • FIG. 5 is a section showing another variant of the dispensing nozzle according to the invention;
  • FIG. 5 a is a side view showing the internal face of the cap, in the form of a cup, of the nozzle according to FIG. 5.

Sur la figure 1, la buse de distribution selon l'invention, désignée dans son ensemble par le repère 1, comprend une coupelle centrale 2 emmanchée sur un embout central 3 porté par un support 10 ; une chambre centrale 4 est ainsi définie par la face intérieure 5 de la coupelle centrale 2 et la face extérieure 6 de l'embout central 3. Le fond de la coupelle centrale 2 est traversé par un canal de sortie central 7, et la partie cylindrique de ladite coupelle centrale 2 est emmanchée à étanchéité en 32 à l'intérieur d'un embout périphérique 13, du support, entourant l'embout central 3 ; la coupelle centrale 2 est maintenue axialement dans l'embout périphérique 13, par exemple par clipsage en 33.In FIG. 1, the dispensing nozzle according to the invention, generally designated by the reference numeral 1, comprises a central cup 2 fitted on a central end piece 3 carried by a support 10; a central chamber 4 is thus defined by the internal face 5 of the central cup 2 and the external face 6 of the central end piece 3. The bottom of the central cup 2 is crossed by a central outlet channel 7, and the cylindrical part said central cup 2 is fitted with a seal at 32 inside a peripheral end piece 13, of the support, surrounding the central end piece 3; the central cup 2 is held axially in the peripheral end piece 13, for example by clipping at 33.

Une coupelle périphérique 11 est emmanchée sur l'embout périphérique 13, et, à étanchéité, en 34 à l'intérieur d'un embout externe 28 porté par le support, l'embout externe 28 entourant l'embout périphérique 13 ; la coupelle périphérique 11 est maintenue axialement dans l'embout externe 28, par exemple par clipsage en 35. Une chambre périphérique 36 est ainsi définie entre la face intérieure 12 de la coupelle périphérique 11, la face extérieure de l'embout périphérique 13, et la face extérieure 14 de la coupelle centrale 2. La face extérieure du fond de la coupelle centrale 2 et la face intérieure du fond de la coupelle périphérique 11 sont coniques, en sorte que, les fonds des deux coupelles étant dans un même plan perpendiculaire à l'axe, un canal de sortie phériphérique 25 traversant le fond de la coupelle périphérique a, lorsque les coupelles sont montées dans le support, une forme annulaire et entoure le canal central 7.A peripheral cup 11 is fitted onto the peripheral end piece 13, and, at sealing, at 34 inside an external end piece 28 carried by the support, the external end piece 28 surrounding the peripheral end piece 13; the peripheral cup 11 is held axially in the external end piece 28, for example by clipping at 35. A peripheral chamber 36 is thus defined between the internal face 12 of the peripheral cup 11, the external face of the peripheral end piece 13, and the outside face 14 of the central cup 2. The outside face of the bottom of the central cup 2 and the inside face of the bottom of the peripheral cup 11 are conical, so that the bottoms of the two cups being in the same plane perpendicular to the axis, a peripheral outlet channel 25 passing through the bottom of the peripheral cup has, when the cups are mounted in the support, an annular shape and surrounds the central channel 7.

La chambre centrale 4 est alimentée en un premier fluide par une arrivée d'alimentation 9 et un jeu 8, par exemple une saignée longitudinale dans la face intérieure de la coupelle centrale 2, entre la coupelle centrale 2 et le manchon central 3, lequel jeu 8 débouche dans un espace annulaire 9a du support, l'arrivée d'alimentation 9 débouchant dans l'espace annulaire 9a. La chambre périphérique 36 est, de la même façon, alimentée en un deuxième fluide par une arrivée d'alimentation 15, un espace annulaire 15a et une saignée longitudinale 16 ménagée sur la face intérieure de la paroi cylindrique de la coupelle périphérique 11.The central chamber 4 is supplied with a first fluid by a supply inlet 9 and a clearance 8, for example a longitudinal groove in the inner face of the central cup 2, between the central cup 2 and the central sleeve 3, which game 8 opens into an annular space 9 at of the support, the supply inlet 9 opening into the annular space 9 at . The peripheral chamber 36 is, in the same way, supplied with a second fluid by a supply inlet 15, an annular space 15 at and a longitudinal groove 16 formed on the internal face of the cylindrical wall of the peripheral cup 11.

Le support 10 de la buse 1 selon l'invention est le bouton poussoir d'une valve de distribution d'un bidon aérosol classique, qui, pour cette raison, ne sera pas détaillée ici. L'arrivée d'alimentation 9 communique avec l'intérieur 19 d'un élément tubulaire 18 d'actionnement d'une soupape qui s'ouvre sous l'action d'un effort appliqué au support 10, et le liquide contenu dans le bidon est alors pulvérisé à l'extérieur, à travers le canal central 7, sous l'action du fluide propulseur contenu dans le bidon de manière habituelle. Conformément à la présente invention, cette même action sur le bouton poussoir met en communication l'espace du bidon contenant le fluide propulseur avec l'espace annulaire 20, compris entre l'élément tubulaire 18 et un fourreau 17, tous deux portés par le bouton poussoir 10, l'espace annulaire 20 communiquant avec l'arrivée 15 d'alimentation en un deuxième fluide, ici le gaz propulseur ; ce gaz propulseur sort à travers le canal périphérique 25 et, en raison de la forme conique de la chambre périphérique, ce courant de gaz propulseur vient heurter, à la sortie, le courant de liquide sortant du canal central 7 ; cette disposition permet un meilleur fractionnement du liquide distribué, et donc une plus grande finesse de pulvérisation.The support 10 of the nozzle 1 according to the invention is the push button of a valve for dispensing a conventional aerosol can, which, for this reason, will not be detailed here. The supply inlet 9 communicates with the interior 19 of a tubular element 18 for actuating a valve which opens under the action of a force applied to the support 10, and the liquid contained in the container. is then sprayed outside, through the central channel 7, under the action of the propellant fluid contained in the container in the usual manner. In accordance with the present invention, this same action on the push button puts the space of the container containing the propellant fluid into communication with the annular space 20, comprised between the tubular element 18 and a sheath 17, both carried by the button pusher 10, the annular space 20 communicating with the inlet 15 for supplying a second fluid, here the propellant; this propellant gas leaves through the peripheral channel 25 and, due to the conical shape of the peripheral chamber, this current of propellant gas collides, at the outlet, with the stream of liquid leaving the central channel 7; this arrangement allows better fractionation of the dispensed liquid, and therefore greater spray finesse.

Les séquences de distribution de liquide et de gaz peuvent être variées : il est, par exemple, avantageux de distribuer du gaz dans un premier temps, puis du gaz et du liquide en même temps, et ensuite à nouveau du gaz seul, qui nettoiera par entraînement le canal central 7 grâce à la dépression créée par le courant gazeux.The liquid and gas distribution sequences can be varied: it is, for example, advantageous to distribute gas first, then gas and liquid at the same time, and then again gas alone, which will clean by driving the central channel 7 thanks to the vacuum created by the gas stream.

Le fractionnement du liquide distribué peut être adapté à sa nature, en adaptant notamment les canaux central 7 et périphérique 25, et/ou les chambres centrale 4 et périphérique 36.The fractionation of the dispensed liquid can be adapted to its nature, in particular by adapting the central 7 and peripheral 25 channels, and / or the central 4 and peripheral 36 chambers.

Selon la variante de la figure 2, la face extérieure du fond de la coupelle centrale 2 est en deux parties coniques 14a, 14b, l'angle de la partie 14a étant plus aigu que celui de la partie 14b ; grâce à cette disposition, le canal périphérique 25 est plus proche radialement du canal central 7.According to the variant of Figure 2, the outer face of the bottom of the central cup 2 is in two tapered portions 14 a, 14 b, the angle of the part 14 a is more acute than that of the portion 14 b; thanks to this arrangement, the peripheral channel 25 is closer radially to the central channel 7.

Selon la variante de la figure 3, une précompression progressive est donnée à chacun des fluides avant leur sortie à l'extérieur : pour celà, les chambres centrale et périphérique ont des volumes, à l'entrée, annulaires tronconiques, limités, entre autres, par les portions coniques respectivement 21 et 22 des faces internes des coupelles centrale 2 et périphérique 11. On notera, également sur cette figure, la forme hémisphérique de l'extrémité de la face extérieure de l'embout central, la partie en regard de la face intérieure 5 de la coupelle centrale 2 ayant une forme hémisphérique correspondante, laquelle face intérieure 5 de la coupelle centrale 2 étant pouvue d'ailettes hélicoïdales 23, visibles également sur la figure 3a, de manière à doter le liquide d'un mouvement tourbillonnaire. Le canal central 7 a, ici, une forme conique convergent vers la sortie.According to the variant of FIG. 3, a progressive precompression is given to each of the fluids before they exit outside: for this, the central and peripheral chambers have volumes, at the entrance, frustoconical annulars, limited, among others, by the conical portions 21 and 22 respectively of the internal faces of the central 2 and peripheral cups 11. It will also be noted, in this figure, the hemispherical shape of the end of the external face of the central end piece, the part opposite the inner face 5 of the central cup 2 having a corresponding hemispherical shape, which inner face 5 of the central cup 2 being provided with helical fins 23, also visible in FIG. 3a, so as to provide the liquid with a vortex movement. The central channel 7 has, here, a conical shape converging towards the outlet.

Selon cette même variante de la figure 3, le fond de la coupelle périphérique 11 est plat, ainsi que la face extérieure de la coupelle centrale 2 située en regard ; la face intérieure du fond de la coupelle périphérique 11 est munie d'ailettes 24, également visibles sur la figure 3b ; ces ailettes 24 sont planes, selon des plans parallèles à l'axe mais ne passant pas par l'axe, et inclinées d'un même angle et dans le même sens par rapport aux rayons qui passent par leur extrémité la plus éloignée de l'axe : cette disposition permet de doter le gaz propulseur, également, d'un mouvement tourbillonnaire ; on notera que les tourbillons de liquide et de gaz sont en sens opposés de manière à augmenter le fractionnement. Dans l'exemple de la figure 3, le canal périphérique est formé de deux troncs de cônes, l'un, 25A, convergent, et l'autre, 25B, divergent, l'extrémité plane perpendiculaire à l'axe de la sortie du canal central étant disposée au droit du plan de raccordement des deux troncs de cônes 25A, 25B.According to this same variant of Figure 3, the bottom of the peripheral cup 11 is flat, as well as the outer face of the central cup 2 located opposite; the inner face of the bottom of the peripheral cup 11 is provided with fins 24, also visible in FIG. 3b; these fins 24 are plane, in planes parallel to the axis but not passing through the axis, and inclined at the same angle and in the same direction relative to the rays which pass through their end furthest from the axis: this arrangement makes it possible to provide the propellant gas, also, with a vortex movement; it will be noted that the vortices of liquid and gas are in opposite directions so as to increase the fractionation. In the example of FIG. 3, the peripheral channel is formed of two truncated cones, one, 25A, converging, and the other, 25B, diverging, the planar end perpendicular to the axis of the outlet of the central channel being disposed in line with the connection plane of the two trunks of cones 25A, 25B.

La variante de buse, selon l'invention, représentée sur la figure 4, comporte les dispositions avantageuses de la figure 3, à savoir la précompression des fluides grâce aux formes tronconiques 21, 22 des faces internes des coupelles, ainsi que des mouvements tourbillonnaires des fluides ; selon cette variante, les ailettes 26, 27 provoquant ces mouvements tourbillonnaires sont toutes portées par le fond de la coupelle centrale : ces ailettes sont du type décrit selon la figure 3b ; les ailettes 26 sont prévues sur la face interne de la coupelle centrale 2 et visibles également sur la figure 4a, vue de la gauche de la figure 4, et les ailettes 27 sont prévues sur la face externe de la coupelle centrale 2 et visibles également sur la figure 4b, vue de la droite de la figure 4.The variant nozzle, according to the invention, represented in FIG. 4, comprises the advantageous arrangements of FIG. 3, namely the precompression of the fluids thanks to the frustoconical shapes 21, 22 of the internal faces of the cups, as well as of the swirl movements of the fluids; according to this variant, the fins 26, 27 causing these vortex movements are all carried by the bottom of the central cup: these fins are of the type described according to FIG. 3b; the fins 26 are provided on the internal face of the central cup 2 and also visible in FIG. 4a, seen from the left of FIG. 4, and the fins 27 are provided on the external face of the central cup 2 and also visible on FIG. 4b, view from the right of FIG. 4.

La variante de la figure 4 est également avantageuse de par la disposition relative et la constitution des canaux central et périphérique. Le canal central est conique convergent vers l'extérieur en 7a, et le canal périphérique conique divergent vers l'extérieur en 25b ; les deux troncs de cônes 7a et 25b sont séparés par un espace 7b dans lequel les fluides se rencontrent ; cette disposition en venturi permet la compression du liquide en 7a, la rencontre du liquide et du gaz en 7b, la dépression du mélange en 25b, et favorise la finesse et l'homogénéité de la pulvérisation.The variant of Figure 4 is also advantageous by the relative arrangement and the constitution of the central and peripheral channels. The central channel is conical converging outwardly 7a, and the conical peripheral channel diverge outwardly in 25 b; the two trunks of cones 7 a and 25 b are separated by a space 7 b in which the fluids meet; this provision venturi allows the compression of the liquid 7 to the meeting of the liquid and gas 7 b, depression of the mixture 25 b, and promotes the fineness and homogeneity of the spray.

La variante de buse selon la figure 5 est analogue à celle de la figure 4, à laquelle a été ajoutée une coiffe 37 en forme de coupelle ; la coiffe 37 est constituée d'une jupe cylindrique 38 et d'une calotte sphérique 39, raccordées par des nervures radiales 30. La jupe 38 est emmanchée à étanchéité, d'une part, sur la face extérieure cylindrique de la coupelle périphérique 11 clipsée en 35 et, d'autre part, à l'intérieur de l'embout externe 28, clipsée en 40, également à étanchéité. L'espace compris entre la face intérieure de la calotte 39 et la face extérieure de la coupelle périphérique 11 définit une pluralité de canaux coniques convergents vers l'extérieur, la face extérieure de la coupelle (11) étant prévue en forme conique, selon 29 sur la figure 5 ; ces canaux répartis conférentiellement autour de l'axe débouchent de part et d'autre à l'extérieur, en ayant une entrée, éloignée de l'axe, plus large que la sortie proche de l'axe ; une sortie annulaire 31 est ainsi définie ; cette sortie 31 entoure la sortie du canal périphérique 25b et est proche de celle-ci ; grâce à cette disposition, la dépression régnant à la sortie du venturi 7a, 7b, 25b aspire de l'air extérieur qui traverse ces canaux et vient également fractionner et aérer le fluide pulvérisé.The variant nozzle according to FIG. 5 is similar to that of FIG. 4, to which a cap 37 in the form of a cup has been added; the cap 37 consists of a cylindrical skirt 38 and a spherical cap 39, connected by radial ribs 30. The skirt 38 is fitted with a seal, on the one hand, on the cylindrical outer face of the peripheral cup 11 clipped at 35 and, on the other hand, inside the external end piece 28, clipped at 40, also sealed. The space between the inside face of the cap 39 and the outside face of the peripheral cup 11 defines a plurality of conical channels converging towards the outside, the outside face of the cup (11) being provided in conical shape, according to 29 in Figure 5; these channels distributed conferentially around the axis open on either side to the outside, having an inlet, distant from the axis, more wider than the exit near the axis; an annular outlet 31 is thus defined; this outlet 31 surrounds the outlet of the peripheral channel 25b and is close to it; thanks to this arrangement, the vacuum prevailing at the outlet of the venturi 7at, 7b, 25b sucks in outside air which passes through these channels and also comes to fractionate and aerate the sprayed fluid.

L'exemple représenté montre l'application de la buse selon l'invention à une valve de distribution d'un bidon aérosol, mais, bien entendu, elle peut équiper tout récipient pour la distribution d'un fluide sous pression : récipient muni d'une poire, récipient muni d'une pompe, récipient flexible comprimable ; dans ce dernier cas, le support de buse est l'extrémité d'un récipient, ou flacon comprimable, dans lequel l'un des fluides est le liquide à distribuer, et, l'autre fluide, l'air contenu dans le flacon au-dessus du niveau du liquide.The example shown shows the application of the nozzle according to the invention to a valve for dispensing an aerosol can, but, of course, it can equip any container for dispensing a pressurized fluid: container provided with a pear, container fitted with a pump, flexible compressible container; in the latter case, the nozzle support is the end of a container, or compressible bottle, in which one of the fluids is the liquid to be dispensed, and, the other fluid, the air contained in the bottle at the - above the liquid level.

Claims (17)

  1. Dispensing nozzle (1) for dispensing a fluid to be dispensed, under pressure, including a central feed chamber (4) arranged about an axis and a central outlet duct (7) communicating, on the one hand, with the said central chamber (4) and, on the other hand, with the outside, the said outlet duct (7) being arranged in the axis of the said central chamber (4), the dispensing nozzle (1) further including a peripheral feed chamber (36) and a peripheral outlet duct (25) communicating, on the one hand, with the said peripheral chamber (36) and, on the other hand, with the outside, the said peripheral chamber (36) surrounding the said central chamber (4) and the peripheral duct (25) surrounding the said central duct (7), the two said chambers (4, 6) and the said peripheral duct (25) being arranged circumferentially about the said axis of the said central chamber (4), the peripheral chamber (36) being intended to be fed with a second fluid to be dispensed, distinct from the first fluid feeding the central chamber (4), one of the said first and second fluids being a gas, and the other being a liquid, in which nozzle the central chamber (4) is defined by a central cup (2) fitted onto a central end piece (3) borne by a support (10), between the interior face (5) of the said central cup (2) and the exterior face (6) of the said central end piece (3), the central outlet duct (7) passing through the bottom of the said central cup (2), characterized in that the peripheral chamber (36) is defined by a peripheral cup (11) fitted onto a peripheral end piece (13) borne by the support (10), between the interior face (12) of the said peripheral cup (11), the exterior face of the said peripheral end piece (13) and the exterior face (14) of the central cup (2), the peripheral outlet duct (7) passing through the bottom of the said peripheral cup (11).
  2. Dispensing nozzle according to Claim 1, characterized in that the central cup (2) is also fitted inside the peripheral end piece (13).
  3. Dispensing nozzle according to Claim 1, characterized in that the peripheral cup (11) is also fitted inside an outer end piece (28) of the support (10) surrounding the peripheral end piece (13).
  4. Dispensing nozzle according to one of Claims 1 to 3, characterized in that the central feed chamber (4) and/or peripheral feed chamber (36) is cylindrical.
  5. Dispensing nozzle according to one of Claims 1 to 3, characterized in that the central feed chamber (4) and/or the peripheral feed chamber (36) is conical, converging towards the outside.
  6. Dispensing nozzle according to one of Claims 1 to 3, characterized in that the central feed chamber (4) and/or the peripheral feed chamber (36) is hemispherical.
  7. Dispensing nozzle according to one of Claims 1 to 6, characterized in that the central chamber and/or the peripheral chamber is provided with fins (23, 24, 26, 27) inducing swirl in the fluid passing through it.
  8. Dispensing nozzle according to one of Claims 1 to 6, characterized in that the central outlet duct (7) and/or the peripheral outlet duct (25) is cylindrical.
  9. Dispensing nozzle according to one of Claims 1 to 6, characterized in that the central outlet duct (7) and/or the peripheral outlet duct (25) is conical.
  10. Dispensing nozzle according to Claim 9, characterized in that the central outlet duct (7) is conical, converging towards the outside.
  11. Dispensing nozzle according to one of Claims 8 to 10, characterized in that the central outlet duct has a conical portion (7a) emerging in the central chamber and a cylindrical portion (7b) emerging on the outside.
  12. Dispensing nozzle according to Claim 9, characterized in that the peripheral outlet duct (25) is conical, diverging towards the outside.
  13. Dispensing nozzle according to one of Claims 1 to 12, characterized in that a cap (37) in the form of a cup is fitted onto the peripheral cup (11), and in the outer end piece (28) of the support (10) and defines, in conjunction with the conical exterior face (29) of the peripheral cup (11), a plurality of conical passages converging towards the outside and distributed circumferentially about the axis, each passage having an inlet and an outlet (31), the said inlet which is further from the axis and wider than the said outlet (31) communicating with the outside, and the said outlet (31) also communicating with the outside close to the outlet (25b) of the peripheral duct (25).
  14. Dispensing nozzle according to one of Claims 1 to 13, characterized in that the support (10) for the nozzle (1) is the push-button for actuating a dispensing pump intended to equip a dispensing can, one of the two fluids being the liquid to be dispensed, present in the can, and the other fluid being a gas introduced into the can, especially air or nitrogen.
  15. Dispensing nozzle according to Claim 14, characterized in that one of the two fluids is under pressure.
  16. Dispensing nozzle according to one of Claims 1 to 13, characterized in that the support (10) for the nozzle (1) is the dispensing valve of an aerosol can, one of the two fluids being the liquid to be dispensed and the other fluid being the gaseous propellant for the first fluid.
  17. Dispensing nozzle according to one of Claims 1 to 13, characterized in that the support (10) for the nozzle (1) is the end of a compressible bottle, one of the two fluids being the liquid to be dispensed and the other fluid being air contained in the bottle above the level of the liquid.
EP19930400678 1992-03-20 1993-03-17 Dispensing nozzle Expired - Lifetime EP0561696B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9203354A FR2688711A1 (en) 1992-03-20 1992-03-20 DISTRIBUTION NOZZLE.
FR9203354 1992-03-20

Publications (2)

Publication Number Publication Date
EP0561696A1 EP0561696A1 (en) 1993-09-22
EP0561696B1 true EP0561696B1 (en) 1996-10-30

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Application Number Title Priority Date Filing Date
EP19930400678 Expired - Lifetime EP0561696B1 (en) 1992-03-20 1993-03-17 Dispensing nozzle

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EP (1) EP0561696B1 (en)
DE (1) DE69305671T2 (en)
ES (1) ES2093373T3 (en)
FR (1) FR2688711A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2331031A (en) * 1997-11-05 1999-05-12 Itw Ltd An improved spray nozzle
GB2335731B (en) * 1998-03-27 2001-12-19 Anthony Michael Glazer A cryostat nozzle and a method of using a cryostat
US9120109B2 (en) * 2012-02-29 2015-09-01 Universidad De Sevilla Nozzle insert device and methods for dispensing head atomizer
FR3094970B1 (en) * 2019-04-10 2022-12-23 Lindal France Diffuser for pressure vessel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1251437A (en) * 1959-12-11 1961-01-20 Sprayer improvements
US4200232A (en) * 1978-10-23 1980-04-29 The United States Of America As Represented By The Secretary Of The Interior Induced air flow self-cleaning spray nozzle
US4347982A (en) * 1979-07-02 1982-09-07 Adelphi Research Center, Inc. Oil burner nozzle
DE3722469A1 (en) * 1987-07-08 1989-01-19 Pfeiffer Erich Gmbh & Co Kg HAND-OPERATED DISCHARGE DEVICE FOR MEDIA

Also Published As

Publication number Publication date
DE69305671T2 (en) 1997-02-27
FR2688711A1 (en) 1993-09-24
DE69305671D1 (en) 1996-12-05
FR2688711B1 (en) 1995-06-02
ES2093373T3 (en) 1996-12-16
EP0561696A1 (en) 1993-09-22

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