EP0508860A1 - Liquid spray device comprising a pressurized container provided with a valve having an additional gas intake - Google Patents

Liquid spray device comprising a pressurized container provided with a valve having an additional gas intake Download PDF

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Publication number
EP0508860A1
EP0508860A1 EP92400906A EP92400906A EP0508860A1 EP 0508860 A1 EP0508860 A1 EP 0508860A1 EP 92400906 A EP92400906 A EP 92400906A EP 92400906 A EP92400906 A EP 92400906A EP 0508860 A1 EP0508860 A1 EP 0508860A1
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EP
European Patent Office
Prior art keywords
valve
additional gas
gas intake
valve body
sintered element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92400906A
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German (de)
French (fr)
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EP0508860B1 (en
Inventor
Pierre Lasserre
Patrice Gil
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LOreal SA
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LOreal SA
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    • 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
    • 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
    • B65D83/75—Aerosol containers not provided for in groups B65D83/16 - B65D83/74
    • B65D83/754—Aerosol containers not provided for in groups B65D83/16 - B65D83/74 comprising filters in the fluid flow path

Definitions

  • the present invention relates to a device for spraying a liquid, comprising a pressurized container provided with an additional gas intake valve.
  • Aerosol type spraying devices consist of a container containing a product in liquid form to be sprayed and a propellant.
  • the propellant is, in known manner, a liquefied gas such as chlorofluorinated hydrocarbons, propane or butane, or a compressed gas, for example compressed air.
  • the container is fitted with a valve for the outlet of the pressurized liquid. This valve is fixed to a valve cup, so that the fixed valve body opens in the container and the movable element opens outside the container, the valve being opened by translation or depression of the movable element in the valve body.
  • the insertion of the movable element of the valve is generally obtained using a push button, capable of pressing on the movable element of the valve, push button that the user can move in translation manually to activate the valve.
  • the push button generally comprises an ejection channel for the product to be dispensed and a spray orifice.
  • a dip tube is generally fixed to the valve body, this tube plunger to supply the valve body with liquid to be sprayed, even when the liquid level is low.
  • the pressure in the container is generally limited to about 12 x 10 5 pascals.
  • the pressure in the container decreases as it is dispensed; it follows that at the end of dispensing and in the absence of additional gas intake, the spraying is generally not satisfactory because the pressure is insufficient to spray adequately by mechanical effect at the dispensing orifice. since the initial pressure is capped.
  • the present invention therefore relates to a spraying device comprising a container pressurized by means of a non-liquefied compressed gas, said container being provided with a distribution valve with additional gas intake and with a dip tube fixed to the body of valve, characterized in that the additional gas intake is made through a sintered element having dimensions and a porosity such that, under a pressure difference of 10 ⁇ 10 5 pascals, the flow of gas passing through the sintered element is between 10 and 50 cm 3 / sec.
  • the sintered element used has, in general, pores with an average diameter of between 0.1 and 5 micrometers.
  • the sintered elements are, in known manner, obtained by agglomeration, by heating and / or by compression of a pulverulent material such as glass, ceramic, metal or plastic, for example polyethylene. According to the present invention, it is preferable to use the sintered elements sold by the company "POREX” under the trade name "POROUS PLASTICS".
  • the additional gas flow depends on the dimensions and the nature of the sintered element, that is to say the average path traveled by the gas in the sintered element and the contact surface between the gas and the sintered element.
  • the sintered element is a cylinder, it depends on the section and the length of this element.
  • the dip tube is located in the axis of the supply duct of the valve body and the additional gas intake is perpendicular to said supply duct;
  • the sintered element may have the shape of a cylinder.
  • the additional gas intake is located in the axis of the supply duct of the valve body and the dip tube opens perpendicular to this axis;
  • the sintered element may have the shape of a cylinder.
  • the sintered element has the shape of a ring arranged in the valve body, so as to surround the opening of the supply duct of the valve body, the gas intake additional being made entirely through said ring by means of openings made in the wall of the valve body opposite said ring.
  • the device represented in FIG. 1 is generally designated by the reference 1. It consists of a container 2, comprising a valve 3 actuated by a push button 5.
  • the container 2 consists of side walls of generally cylindrical shape closed at one end by a bottom (not shown). At the end opposite the bottom, the walls form a dome and the container is closed by a cup 4 of valve 3.
  • the valve 3 is fixed to the center of the valve cup 4 which is fixed to the container 2 by a crimping bead.
  • Said valve 3 comprises an emerging rod 6, which is movable in translation and emerges outside the container 2, and a valve body 7 which is fixed and which opens in the container 2; the valve stem 6 slides in the valve body 7 to cause the valve 3 to open.
  • a push button 5 is fixed by interlocking on the emerging stem 6; it includes a cylindrical side skirt 5 a , the lower edge of which stops at a distance from the cup 4 and the upper edge of which is connected to a flat upper part 5 b , on which the user presses to actuate the valve 3.
  • an ejection channel 8 In the push button 5 is formed an ejection channel 8, this channel comprising two sections arranged at right angles; a first section 8 a is arranged coaxially with respect to the emerging rod 6 and a second section 8 b arranged at right angles opens in the side skirt by a recess where a spray nozzle is forced into, the orifice 9 has a diameter much smaller than that of section 8 b .
  • the valve body 7 is provided with a tube 10 of smaller diameter forming a supply conduit for the valve body. On this tube 10 is force-fitted a dip tube 11.
  • the additional gas outlet 12 opens in the valve body 7; it consists of two right-angled sections 12 a and 12 b .
  • the section 12 a is perpendicular to the longitudinal axis of the container 2 and opens in the valve body 7.
  • the section 12 b opens above the level of the liquid L to be sprayed.
  • the section 12b contains a sintered element 13 which has the shape of a cylinder and which has been introduced by force.
  • FIG 2 is shown schematically another embodiment of the invention.
  • the push button and the container as well as the valve are identical to those shown in Figure 1.
  • the cup designated by the reference 104 and the valve body 107 have been shown.
  • an additional gas intake constituted by a pipe 112 provided with a lateral tube 112 a .
  • a dip tube 111 bent at a right angle On this lateral tube 112 a is fixed a dip tube 111 bent at a right angle; the tube 111 is fixed to the lateral tubing 112 a , perpendicular to the longitudinal axis of the container; it extends, for the rest of its length parallel to the longitudinal axis of the container.
  • the sintered element 113 is cylindrical and it is forced into the conduit 112 below the lateral tube 112 a . A result similar to that indicated for the first embodiment is obtained.
  • FIG. 3 is shown schematically another embodiment of the spraying device according to the invention.
  • the push button and the container are identical to those illustrated in FIG. 1.
  • the valve body 207 is delimited by a cylindrical side wall 214 closed at its base by a partition 215 perpendicular to the longitudinal axis of the container.
  • the partition 215 is connected in its central zone to a cylindrical end piece 210 turned towards the inside of the container forming the supply conduit of the valve body. On this endpiece is fixed the dip tube 211.
  • At the lower part of the side wall 214 and at the periphery of the partition 215 are formed lights 216.
  • the sintered element 213 rests on the partition 215; it has an annular shape and its outside diameter is equal, except for the necessary clearance, to the internal diameter of the side wall 214 and its internal diameter equal to the internal diameter of the end piece 210.
  • the sintered element 213 has a thickness such that the openings 216 are entirely opposite the sintered element 213.
  • the compressed gas enters through the ports 216 in the element 213 and passes through it. Results similar to those described for the first embodiment are obtained.
  • a spraying device was used as illustrated in FIG. 1; the container of this device has an internal volume of 270 cm 3 ; contains 150 cm 3 of spray liquid with a viscosity of 15 cps; the propellant is compressed air, initially under 10x10 5 pascals; the orifice of the spray nozzle has a diameter of 0.20 mm.
  • the results were compared without additional gas intake and with an additional gas intake containing a cylindrical sintered polyethylene element 2.4 mm in diameter and 1.75 mm in length having a pore diameter of 2 micrometers; the flow rate of the frit is 50 cm 3 / sec. under a pressure difference of 5 x 10 5 pascals.

Abstract

According to the invention, the additional gas intake is made through a sintered element (13, 113, 213) having dimensions and a porosity such that the flow rate under 10 x 10<5> pascals lies between 10 and 50 cm<3>/s. <IMAGE>

Description

La présente invention concerne un dispositif de pulvérisation d'un liquide, comprenant un récipient pressurisé muni d'une valve à prise de gaz additionnelle.The present invention relates to a device for spraying a liquid, comprising a pressurized container provided with an additional gas intake valve.

On connaît les dispositifs de pulvérisation de type aérosol qui sont constitués par un récipient contenant un produit sous forme liquide à pulvériser et un propulseur. Le propulseur est, de façon connue, un gaz liquéfié tel que les hydrocarbures chlorofluorés, le propane ou le butane, ou un gaz comprimé, par exemple de l'air comprimé. Le récipient est muni d'une valve pour la sortie du liquide sous pression. Cette valve est fixée sur une coupelle de valve, de façon que le corps de valve fixe s'ouvre dans le récipient et que l'élément mobile s'ouvre à l'extérieur du récipient, l'ouverture de la valve s'effectuant par translation ou enfoncement de l'élément mobile dans le corps de valve. L'enfoncement de l'élément mobile de la valve est généralement obtenu à l'aide d'un bouton-poussoir, susceptible d'appuyer sur l'élément mobile de la valve, bouton-poussoir que l'utilisateur peut déplacer en translation manuellement pour actionner la valve. Le bouton-poussoir comporte généralement un canal d'éjection du produit à distribuer et un orifice de pulvérisation.Aerosol type spraying devices are known which consist of a container containing a product in liquid form to be sprayed and a propellant. The propellant is, in known manner, a liquefied gas such as chlorofluorinated hydrocarbons, propane or butane, or a compressed gas, for example compressed air. The container is fitted with a valve for the outlet of the pressurized liquid. This valve is fixed to a valve cup, so that the fixed valve body opens in the container and the movable element opens outside the container, the valve being opened by translation or depression of the movable element in the valve body. The insertion of the movable element of the valve is generally obtained using a push button, capable of pressing on the movable element of the valve, push button that the user can move in translation manually to activate the valve. The push button generally comprises an ejection channel for the product to be dispensed and a spray orifice.

Lorsque la pulvérisation du produit doit être effectuée "tête en haut", c'est-à-dire la valve et le bouton-poussoir étant disposés au-dessus du récipient pressurisé, un tube plongeur est généralement fixé au corps de valve, ce tube plongeur permettant d'alimenter le corps de valve en liquide à pulvériser, même lorsque le niveau de liquide est faible.When the spraying of the product must be carried out "head up", that is to say the valve and the push-button being arranged above the pressurized container, a dip tube is generally fixed to the valve body, this tube plunger to supply the valve body with liquid to be sprayed, even when the liquid level is low.

Il est connu de prévoir au niveau du corps de valve une prise de gaz additionnelle, qui permet de prélever une fraction du gaz sous pression contenu dans le récipient au-dessus du liquide et, par conséquent, de faciliter l'éjection du liquide à pulvériser et de favoriser la pulvérisation dudit liquide.It is known to provide an additional gas intake at the valve body, which makes it possible to take a fraction of the gas under pressure contained in the container above the liquid and, consequently, to facilitate the ejection of the liquid to be sprayed. and to promote the spraying of said liquid.

Lorsque le propulseur est un gaz comprimé non liquéfié, par exemple de l'air comprimé, la pression dans le récipient est généralement limitée à environ 12 x 105 pascals. La pression dans le récipient diminue au fur et à mesure de la distribution ; il en résulte qu'en fin de distribution et en l'absence de prise de gaz additionnelle, la pulvérisation n'est, en général, pas satisfaisante car la pression est insuffisante pour pulvériser convenablement par effet mécanique au niveau de l'orifice de distribution puisque la pression initiale est plafonnée. Pour améliorer la pulvérisation, on a donc essayé de munir la valve d'une prise de gaz additionnelle ; mais avec les prises de gaz additionnelles utilisées jusqu'à présent, qui ont un diamètre d'environ 0,3 à 0,4 mm, le récipient est, après quelques pulvérisations, complétement vidé du gaz comprimé qu'il contient initialement. On a donc essayé d'utiliser des prises de gaz additionnelles de plus faible diamètre : mais il est mécaniquement impossible de faire, industriellement, des trous ou des ouvertures ayant un diamètre inférieur à environ 100 à 150 micromètres et, avec une prise de gaz additionnelle de ce diamètre, la pression dans le récipient diminue encore trop rapidement.When the propellant is an unliquefied compressed gas, for example compressed air, the pressure in the container is generally limited to about 12 x 10 5 pascals. The pressure in the container decreases as it is dispensed; it follows that at the end of dispensing and in the absence of additional gas intake, the spraying is generally not satisfactory because the pressure is insufficient to spray adequately by mechanical effect at the dispensing orifice. since the initial pressure is capped. To improve the spraying, we therefore tried to provide the valve with an additional gas intake; but with the additional gas intakes used so far, which have a diameter of about 0.3 to 0.4 mm, the container is, after a few sprays, completely emptied of the compressed gas which it initially contains. We therefore tried to use additional gas taps of smaller diameter: but it is mechanically impossible to make, industrially, holes or openings having a diameter less than about 100 to 150 micrometers and, with an additional gas tap of this diameter, the pressure in the container decreases too quickly.

Selon la présente invention, on a trouvé que l'on pouvait améliorer la pulvérisation par un gaz comprimé non liquéfié, sans vider trop rapidement de son gaz propulseur le récipient pressurisé, en introduisant dans la prise de gaz additionnelle un élément fritté ou fritte.According to the present invention, it has been found that spraying with an unliquefied compressed gas could be improved without emptying the pressurized container too quickly from its propellant, introducing a sintered or sintered element into the additional gas outlet.

La présente invention a donc pour objet un dispositif de pulvérisation comprenant un récipient pressurisé au moyen d'un gaz comprimé non liquéfié, ledit récipient étant muni d'une valve de distribution à prise de gaz additionnelle et d'un tube plongeur fixé au corps de valve, caractérisé par le fait que la prise de gaz additionnelle se fait à travers un élément fritté ayant des dimensions et une porosité telles que, sous une différence de pression de 10x105 pascals, le débit de gaz passant à travers l'élément fritté soit compris entre 10 et 50 cm3/sec.The present invention therefore relates to a spraying device comprising a container pressurized by means of a non-liquefied compressed gas, said container being provided with a distribution valve with additional gas intake and with a dip tube fixed to the body of valve, characterized in that the additional gas intake is made through a sintered element having dimensions and a porosity such that, under a pressure difference of 10 × 10 5 pascals, the flow of gas passing through the sintered element is between 10 and 50 cm 3 / sec.

L'élément fritté utilisé a, en général, des pores de diamètre moyen compris entre 0,1 et 5 micromètres.The sintered element used has, in general, pores with an average diameter of between 0.1 and 5 micrometers.

Les éléments frittés sont, de façon connue, obtenus par agglomération, par chauffage et/ou par compression d'un matériau pulvérulent tel que verre, céramique, métal ou matière plastique, par exemple le polyéthylène. Selon la présente invention, on utilise, de préférence, les éléments frittés vendus par la société "POREX" sous la dénomination commerciale "POROUS PLASTICS".The sintered elements are, in known manner, obtained by agglomeration, by heating and / or by compression of a pulverulent material such as glass, ceramic, metal or plastic, for example polyethylene. According to the present invention, it is preferable to use the sintered elements sold by the company "POREX" under the trade name "POROUS PLASTICS".

On a constaté qu'en utilisant un élément fritté tel que défini ci-dessus dans la prise de gaz additionnelle, on obtient une pulvérisation plus fine sans que la pression diminue trop rapidement. La pulvérisation est d'autant plus fine que le débit est plus élevé ; on peut, par conséquent, opérer avec des débits plus faibles tout en obtenant encore une pulvérisation satisfaisante. Par exemple, avec un débit faible de 0,5 g/s, on peut obtenir des gouttelettes ayant un diamètre moyen de 75 micromètres.It has been found that by using a sintered element as defined above in the additional gas intake, a finer spray is obtained without the pressure decreasing too quickly. The higher the spray rate, the finer the spray; it is therefore possible to operate with lower flow rates while still obtaining satisfactory spraying. For example, with a low flow rate of 0.5 g / s, droplets with an average diameter of 75 microns can be obtained.

Le débit de gaz additionnel dépend des dimensions et de la nature de l'élément fritté, c'est-à-dire du trajet moyen parcouru par le gaz dans l'élément fritté et de la surface de contact entre le gaz et l'élément fritté. Par exemple, lorsque l'élément fritté est un cylindre, il dépend de la section et de la longueur de cet élément.The additional gas flow depends on the dimensions and the nature of the sintered element, that is to say the average path traveled by the gas in the sintered element and the contact surface between the gas and the sintered element. For example, when the sintered element is a cylinder, it depends on the section and the length of this element.

Selon un premier mode de réalisation de l'invention, le tube plongeur est situé dans l'axe du conduit d'alimentation du corps de valve et la prise de gaz additionnelle est perpendiculaire audit conduit d'alimentation ; l'élément fritté peut avoir la forme d'un cylindre.According to a first embodiment of the invention, the dip tube is located in the axis of the supply duct of the valve body and the additional gas intake is perpendicular to said supply duct; the sintered element may have the shape of a cylinder.

Selon un deuxième mode de réalisation de l'invention, la prise de gaz additionnelle est située dans l'axe du conduit d'alimentation du corps de valve et le tube plongeur débouche perpendiculairement à cet axe ; l'élément fritté peut avoir la forme d'un cylindre.According to a second embodiment of the invention, the additional gas intake is located in the axis of the supply duct of the valve body and the dip tube opens perpendicular to this axis; the sintered element may have the shape of a cylinder.

Selon un troisième mode de réalisation de l'invention, l'élément fritté a la forme d'un anneau disposé dans le corps de valve, de façon à entourer l'ouverture du conduit d'alimentation du corps de valve, la prise de gaz additionnelle se faisant totalement au travers dudit anneau grâce à des lumières ménagées dans la paroi du corps de valve en vis-à-vis dudit anneau.According to a third embodiment of the invention, the sintered element has the shape of a ring arranged in the valve body, so as to surround the opening of the supply duct of the valve body, the gas intake additional being made entirely through said ring by means of openings made in the wall of the valve body opposite said ring.

Pour mieux faire comprendre l'objet de l'invention, on va en décrire ci-après, à titre d'exemples purement illustratifs et non limitatifs, plusieurs modes de réalisation représentés sur le dessin annexé.To better understand the object of the invention, we will describe below, by way of purely illustrative and non-limiting examples, several embodiments shown in the accompanying drawing.

Sur ce dessin :

  • la figure 1 représente schématiquement, en coupe axiale, un premier mode de réalisation du dispositif selon l'invention, dans lequel la prise de gaz additionnelle est perpendiculaire à l'axe de la conduite d'alimentation du corps de valve ;
  • la figure 2 représente schématiquement en coupe axiale partielle, un deuxième mode de réalisation, dans lequel l'élément fritté est disposé dans l'axe du conduit d'alimentation du corps de valve ;
  • la figure 3 représente schématiquement, en coupe axiale partielle, un troisième mode de réalisation, dans lequel l'élément fritté est un anneau disposé dans le corps de valve et entourant l'ouverture du conduit d'alimentation du corps de valve.
On this drawing :
  • FIG. 1 schematically represents, in axial section, a first embodiment of the device according to the invention, in which the additional gas intake is perpendicular to the axis of the supply pipe of the valve body;
  • Figure 2 schematically shows in partial axial section, a second embodiment, in which the sintered element is arranged in the axis of the supply duct of the valve body;
  • FIG. 3 schematically represents, in partial axial section, a third embodiment, in which the sintered element is a ring arranged in the valve body and surrounding the opening of the supply duct of the valve body.

Le dispositif représenté sur la figure 1 est désigné dans son ensemble par la référence 1. Il est constitué par un récipient 2, comportant une valve 3 actionnée par un bouton-poussoir 5.The device represented in FIG. 1 is generally designated by the reference 1. It consists of a container 2, comprising a valve 3 actuated by a push button 5.

Le récipient 2 est constitué par des parois latérales de forme générale cylindrique fermée à une extrémité par un fond (non représenté). A l'extrémité opposée au fond, les parois forment un dôme et le récipient est fermé par une coupelle 4 de valve 3.The container 2 consists of side walls of generally cylindrical shape closed at one end by a bottom (not shown). At the end opposite the bottom, the walls form a dome and the container is closed by a cup 4 of valve 3.

La valve 3 est fixée au centre de la coupelle 4 de valve qui est fixée sur le récipient 2 par un bourrelet de sertissage. Ladite valve 3 comporte une tige émergente 6, qui est mobile en translation et émerge en dehors du récipient 2, et un corps 7 de valve qui est fixe et qui s'ouvre dans le récipient 2 ; la tige de valve 6 coulisse dans le corps de valve 7 pour provoquer l'ouverture de la valve 3. Selon le mode de réalisation représenté, un bouton-poussoir 5 est fixé par emboîtement sur la tige émergente 6 ; il comprend une jupe latérale cylindrique 5a, dont le bord inférieur s'arrête à distance de la coupelle 4 et dont le bord supérieur est relié à une partie supérieure 5b plate, sur laquelle l'utilisateur appuie pour actionner la valve 3. Dans le bouton-poussoir 5, est ménagé un canal d'éjection 8, ce canal comportant deux sections disposées à angle droit ; une première section 8a est disposée coaxialement vis-à-vis de la tige émergente 6 et une seconde section 8b disposée à angle droit s'ouvre dans la jupe latérale par un chambrage où est enfoncée à force une buse de pulvérisation dont l'orifice 9 a un diamètre très inférieur à celui de la section 8b.The valve 3 is fixed to the center of the valve cup 4 which is fixed to the container 2 by a crimping bead. Said valve 3 comprises an emerging rod 6, which is movable in translation and emerges outside the container 2, and a valve body 7 which is fixed and which opens in the container 2; the valve stem 6 slides in the valve body 7 to cause the valve 3 to open. According to the embodiment shown, a push button 5 is fixed by interlocking on the emerging stem 6; it includes a cylindrical side skirt 5 a , the lower edge of which stops at a distance from the cup 4 and the upper edge of which is connected to a flat upper part 5 b , on which the user presses to actuate the valve 3. In the push button 5 is formed an ejection channel 8, this channel comprising two sections arranged at right angles; a first section 8 a is arranged coaxially with respect to the emerging rod 6 and a second section 8 b arranged at right angles opens in the side skirt by a recess where a spray nozzle is forced into, the orifice 9 has a diameter much smaller than that of section 8 b .

Le corps de valve 7 est muni d'un tube 10 de plus faible diamètre formant conduit d'alimentation du corps de valve. Sur ce tube 10 est emmanché à force un tube plongeur 11. La prise de gaz additionnelle 12 s'ouvre dans le corps de valve 7 ; elle est constituée de deux sections à angle droit 12a et 12b. La section 12a est perpendiculaire à l'axe longitudinal du récipient 2 et s'ouvre dans le corps de valve 7. La section 12b s'ouvre au-dessus du niveau du liquide L à pulvériser. La section 12b contient un élément fritté 13 qui a la forme d'un cylindre et que l'on a introduit à force.The valve body 7 is provided with a tube 10 of smaller diameter forming a supply conduit for the valve body. On this tube 10 is force-fitted a dip tube 11. The additional gas outlet 12 opens in the valve body 7; it consists of two right-angled sections 12 a and 12 b . The section 12 a is perpendicular to the longitudinal axis of the container 2 and opens in the valve body 7. The section 12 b opens above the level of the liquid L to be sprayed. The section 12b contains a sintered element 13 which has the shape of a cylinder and which has been introduced by force.

Lorsque l'utilisateur appuie sur la partie 5b du bouton-poussoir 5, il enfonce la tige de valve 6 et actionne la valve 3 ; le liquide L monte dans le tube plongeur 11 poussé par le gaz comprimé. Simultanément, une petite quantité de gaz comprimé passe à travers l'élément fritté 13 de la prise de gaz additionnelle 12 et pénètre dans le corps de valve 7 où il facilite l'éjection du liquide L à pulvériser. A la sortie de la tige émergente 6, le liquide passe dans le canal 8 et il est pulvérisé au niveau de l'orifice 9. On constate que l'on peut ainsi obtenir une pulvérisation satisfaisante du début à la fin de la distribution.When the user presses part 5b of the push button 5, he pushes the valve stem 6 and actuates the valve 3; the liquid L rises in the dip tube 11 pushed by the compressed gas. Simultaneously, a small amount of compressed gas passes through the sintered element 13 of the additional gas intake 12 and enters the valve body 7 where it facilitates the ejection of the liquid L to be sprayed. At the outlet of the emerging rod 6, the liquid passes through the channel 8 and it is sprayed at the level of the orifice 9. It can be seen that one can thus obtain a satisfactory spraying from the start to the end of the distribution.

Sur la figure 2 est représenté schématiquement un autre mode de réalisation de l'invention. Dans ce mode de réalisation, le bouton-poussoir et le récipient ainsi que la valve sont identiques à ceux représentés sur la figure 1. Afin de simplifier, seuls la coupelle désignée par la référence 104 et le corps de valve 107 ont été représentés. Sur le tube 110 formant conduit d'alimentation du corps de valve 107 est fixée axialement une prise de gaz additionnelle constituée par un conduit 112 muni d'une tubulure latérale 112a. Sur cette tubulure latérale 112a est fixé un tube plongeur 111 coudé à angle droit ; le tube 111 est fixé sur la tubulure latérale 112a, perpendiculairement à l'axe longitudinal du récipient ; il s'étend, pour le reste de sa longueur parallèlement à l'axe longitudinal du récipient. L'élément fritté 113 est cylindrique et il est introduit à force dans le conduit 112 au-dessous de la tubulure latérale 112a. On obtient un résultat analogue à celui indiqué pour la première réalisation.In Figure 2 is shown schematically another embodiment of the invention. In this embodiment, the push button and the container as well as the valve are identical to those shown in Figure 1. For simplicity, only the cup designated by the reference 104 and the valve body 107 have been shown. On the tube 110 forming the supply pipe of the valve body 107 is fixed axially an additional gas intake constituted by a pipe 112 provided with a lateral tube 112 a . On this lateral tube 112 a is fixed a dip tube 111 bent at a right angle; the tube 111 is fixed to the lateral tubing 112 a , perpendicular to the longitudinal axis of the container; it extends, for the rest of its length parallel to the longitudinal axis of the container. The sintered element 113 is cylindrical and it is forced into the conduit 112 below the lateral tube 112 a . A result similar to that indicated for the first embodiment is obtained.

Sur la figure 3 est représenté schématiquement un autre mode de réalisation du dispositif de pulvérisation selon l'invention. Dans ce mode de réalisation de l'invention, le bouton-poussoir et le récipient sont identiques à ceux illustrés sur la figure 1. Pour simplifier, seuls la coupelle de valve 204 et le corps de valve 207 ont été représentés. Le corps de valve 207 est délimité par une paroi latérale 214 cylindrique fermée à sa base par une cloison 215 perpendiculaire à l'axe longitudinal du récipient. La cloison 215 est raccordée dans sa zone centrale à un embout 210 cylindrique tourné vers l'intérieur du récipient formant conduit d'alimentation du corps de valve. Sur cet embout est fixé le tube plongeur 211. A la partie inférieure de la paroi latérale 214 et à la périphérie de la cloison 215 sont ménagées des lumières 216. L'élément fritté 213 repose sur la cloison 215 ; il a une forme annulaire et son diamètre extérieur est égal, au jeu nécessaire près, au diamètre interne de la paroi latérale 214 et son diamètre interne égal au diamètre interne de l'embout 210. L'élément fritté 213 a une épaisseur telle que les lumières 216 soient entièrement en vis-à-vis de l'élément fritté 213.In Figure 3 is shown schematically another embodiment of the spraying device according to the invention. In this embodiment of the invention, the push button and the container are identical to those illustrated in FIG. 1. For simplicity, only the valve cup 204 and the valve body 207 have been shown. The valve body 207 is delimited by a cylindrical side wall 214 closed at its base by a partition 215 perpendicular to the longitudinal axis of the container. The partition 215 is connected in its central zone to a cylindrical end piece 210 turned towards the inside of the container forming the supply conduit of the valve body. On this endpiece is fixed the dip tube 211. At the lower part of the side wall 214 and at the periphery of the partition 215 are formed lights 216. The sintered element 213 rests on the partition 215; it has an annular shape and its outside diameter is equal, except for the necessary clearance, to the internal diameter of the side wall 214 and its internal diameter equal to the internal diameter of the end piece 210. The sintered element 213 has a thickness such that the openings 216 are entirely opposite the sintered element 213.

Lors de la pulvérisation, le gaz comprimé pénètre par les lumières 216 dans l'élément 213 et traverse celui-ci. On obtient des résultats analogues à ceux décrits pour le premier mode de réalisation.During spraying, the compressed gas enters through the ports 216 in the element 213 and passes through it. Results similar to those described for the first embodiment are obtained.

Dans un essai comparatif, on a utilisé un dispositif de pulvérisation tel qu'illustré sur la figure 1 ; le récipient de ce dispositif a un volume interne de 270 cm3 ; contient 150 cm3 de liquide à pulvériser d'une viscosité de 15 cps; le gaz propulseur est de l'air comprimé, initialement sous 10x105 pascals ; l'orifice de la buse de pulvérisation a un diamètre de 0,20 mm. On a comparé les résultats sans prise de gaz additionnelle et avec une prise de gaz additionnelle contenant un élément fritté cylindrique en polyéthylène de 2,4 mm de diamètre et de 1,75 mm de longueur ayant un diamètre de pores de 2 micromètres ; le débit de la fritte est de 50 cm3/sec. sous une différence de pression de 5 x 105 pascals. On à mesuré le débit du liquide distribué et la dimension moyenne des gouttelettes pulvérisées au début, au milieu et à la fin de la distribution. On a obtenu les résultats suivants :

Figure imgb0001
Avec le dispositif de pulvérisation avec prise de gaz additionnelle, on obtient une pulvérisation plus fine avec des débits plus faibles que ceux mesurés avec le dispositif de pulvérisation sans prise de gaz additionnelle.In a comparative test, a spraying device was used as illustrated in FIG. 1; the container of this device has an internal volume of 270 cm 3 ; contains 150 cm 3 of spray liquid with a viscosity of 15 cps; the propellant is compressed air, initially under 10x10 5 pascals; the orifice of the spray nozzle has a diameter of 0.20 mm. The results were compared without additional gas intake and with an additional gas intake containing a cylindrical sintered polyethylene element 2.4 mm in diameter and 1.75 mm in length having a pore diameter of 2 micrometers; the flow rate of the frit is 50 cm 3 / sec. under a pressure difference of 5 x 10 5 pascals. The flow rate of the dispensed liquid and the average size of the spray droplets were measured at the start, in the middle and at the end of the dispensing. The following results were obtained:
Figure imgb0001
 With the spray device with additional gas intake, a finer spray is obtained with lower flow rates than those measured with the spray device without additional gas intake.

Claims (6)

1 - Dispositif de pulvérisation comprenant un récipient pressurisé (2) au moyen d'un gaz comprimé non liquéfié, ledit récipient étant muni d'une valve (3, 103, 203) de distribution à prise de gaz additionnelle et d'un tube plongeur (11, 111, 211), caractérisé par le fait que la prise de gaz additionnelle se fait à travers un élément fritté (13, 113, 213) ayant des dimensions et une porosité telles que sous une différence de pression de 5 x 105 pascals, le débit de gaz passant à travers l'élément fritté soit compris entre 10 et 50 cm3/ sec. 1 - Spray device comprising a pressurized container (2) by means of a non-liquefied compressed gas, said container being provided with a valve (3, 103, 203) for distribution with additional gas intake and with a dip tube (11, 111, 211), characterized in that the additional gas intake takes place through a sintered element (13, 113, 213) having dimensions and porosity such that under a pressure difference of 5 x 10 5 pascals, the gas flow rate passing through the sintered element is between 10 and 50 cm 3 / sec. 2 - Dispositif selon la revendication 1, caractérisé par le fait que le diamètre des pores de l'élément fritté (13, 113, 213) est compris entre 0,1 et 5 micromètres. 2 - Device according to claim 1, characterized in that the diameter of the pores of the sintered element (13, 113, 213) is between 0.1 and 5 micrometers. 3 - Dispositif selon l'une des revendications 1 ou 2, caractérisé par le fait que le tube plongeur (11, 111, 211) est situé dans l'axe du conduit d'alimentation (10) de la valve et la prise de gaz additionnelle (12) est perpendiculaire audit conduit d'alimentation (10). 3 - Device according to one of claims 1 or 2, characterized in that the dip tube (11, 111, 211) is located in the axis of the supply conduit (10) of the valve and the gas outlet additional (12) is perpendicular to said supply conduit (10). 4 - Dispositif selon l'une des revendications 1 ou 2, caractérisé par le fait que la prise de gaz additionnelle est située dans l'axe du conduit d'alimentation (110) de la valve et le tube plongeur (111) débouche perpendiculairement à cet axe. 4 - Device according to one of claims 1 or 2, characterized in that the additional gas intake is located in the axis of the supply conduit (110) of the valve and the dip tube (111) opens perpendicularly to this axis. 5 - Dispositif selon l'une des revendications 3 ou 4, caractérisé par le fait que l'élément fritté (13, 113) a la forme d'un cylindre. 5 - Device according to one of claims 3 or 4, characterized in that the sintered element (13, 113) has the shape of a cylinder. 6 - Dispositif selon l'une des revendications 1 ou 2, caractérisé par le fait que l'élément fritté (213) a la forme d'un anneau disposé dans le corps de valve (207), de façon à entourer l'ouverture du conduit d'alimentation (210) du corps de valve (207), la prise de gaz additionnelle se faisant totalement au travers dudit anneau par des lumières (216) ménagées dans la paroi du corps de valve et les lumières (216) étant entièrement en vis-à-vis dudit élément fritté (213). 6 - Device according to one of claims 1 or 2, characterized in that the sintered element (213) has the shape of a ring disposed in the valve body (207), so as to surround the opening of the supply duct (210) of the valve body (207), the additional gas intake being completely through said ring by slots (216) formed in the wall of the valve body and the slots (216) being entirely opposite said sintered element (213).
EP19920400906 1991-04-08 1992-04-01 Liquid spray device comprising a pressurized container provided with a valve having an additional gas intake Expired - Lifetime EP0508860B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9104235A FR2674774B1 (en) 1991-04-08 1991-04-08 DEVICE FOR SPRAYING A LIQUID COMPRISING A PRESSURIZED CONTAINER PROVIDED WITH AN ADDITIONAL GAS TAKE VALVE.
FR9104235 1991-04-08

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EP0508860A1 true EP0508860A1 (en) 1992-10-14
EP0508860B1 EP0508860B1 (en) 1995-01-04

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JP (1) JPH05132087A (en)
DE (1) DE69201083T2 (en)
ES (1) ES2066570T3 (en)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000367A1 (en) * 1992-06-22 1994-01-06 Joseph Ferraye Universal gradual propulsion and/or active spraying system for aerosols
US5429279A (en) * 1991-06-11 1995-07-04 Airspray International B.V. Mixing chamber for mixing together a gaseous and a liquid constituent

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426120A1 (en) * 1994-07-22 1996-01-25 Coster Tecnologie Speciali Spa Spray head for a container for a pressurized fluid
MX2007010876A (en) * 2005-03-08 2007-12-06 Leafgreen Ltd Aerosol dispenser.
EP1883582A4 (en) * 2005-05-27 2008-11-05 Yong-Soo Kim Dispenser
US8881956B2 (en) * 2012-02-29 2014-11-11 Universidad De Sevilla Dispensing device and methods for emitting atomized spray

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131834A (en) * 1961-08-23 1964-05-05 Meshberg Philip Device and method for dispensing material under pressure of a propellent immiscible gs
FR2157569A5 (en) * 1971-10-18 1973-06-01 Johnson & Son Inc S C
US3970219A (en) * 1975-03-03 1976-07-20 Spitzer Joseph G Aerosol containers for foaming and delivering aerosols and process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131834A (en) * 1961-08-23 1964-05-05 Meshberg Philip Device and method for dispensing material under pressure of a propellent immiscible gs
FR2157569A5 (en) * 1971-10-18 1973-06-01 Johnson & Son Inc S C
US3970219A (en) * 1975-03-03 1976-07-20 Spitzer Joseph G Aerosol containers for foaming and delivering aerosols and process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429279A (en) * 1991-06-11 1995-07-04 Airspray International B.V. Mixing chamber for mixing together a gaseous and a liquid constituent
WO1994000367A1 (en) * 1992-06-22 1994-01-06 Joseph Ferraye Universal gradual propulsion and/or active spraying system for aerosols

Also Published As

Publication number Publication date
FR2674774A1 (en) 1992-10-09
ES2066570T3 (en) 1995-03-01
EP0508860B1 (en) 1995-01-04
FR2674774B1 (en) 1993-07-16
DE69201083T2 (en) 1995-08-31
JPH05132087A (en) 1993-05-28
DE69201083D1 (en) 1995-02-16

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