EP1914002B1 - Device for producing foam - Google Patents

Device for producing foam Download PDF

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Publication number
EP1914002B1
EP1914002B1 EP07291242A EP07291242A EP1914002B1 EP 1914002 B1 EP1914002 B1 EP 1914002B1 EP 07291242 A EP07291242 A EP 07291242A EP 07291242 A EP07291242 A EP 07291242A EP 1914002 B1 EP1914002 B1 EP 1914002B1
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EP
European Patent Office
Prior art keywords
expulsion
liquid
conduit
net
air
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Not-in-force
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EP07291242A
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German (de)
French (fr)
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EP1914002A2 (en
EP1914002A3 (en
Inventor
Gérard Sannier
Francis Poizot
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Individual
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Individual
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Publication of EP1914002A3 publication Critical patent/EP1914002A3/en
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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
    • B05B7/0018—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 with devices for making foam
    • B05B7/005—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 with devices for making foam wherein ambient air is aspirated by a liquid flow
    • B05B7/0056—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 with devices for making foam wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0062—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 with devices for making foam wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns including sieves, porous members or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1052—Actuation means
    • B05B11/1056—Actuation means comprising rotatable or articulated levers
    • B05B11/1057—Triggers, i.e. actuation means consisting of a single lever having one end rotating or pivoting around an axis or a hinge fixedly attached to the container, and another end directly actuated by the user

Definitions

  • the invention relates to the field of devices for producing foam by hand pumps, operating on the basis of foaming liquid. It relates more particularly to a device for producing foam intended to be handled by hand, as for example in the field of cosmetics.
  • Some pumps equipped with a user-activated pumping mechanism by means of a lever, make it possible to expel liquid products with a velocity large enough to project these products.
  • This type of pump allows, for example, to project housekeeping products on windows or laundry or, in the field of cosmetics, to spray a mist of solar oil on the skin.
  • Some products, for example washing, are projected in a semi foaming form, but there is no lever pump producing foam of sufficient quality to be used in the field of cosmetics.
  • the foam production apparatuses, used in the field of cosmetics indeed require the production of dense and voluminous foam to be handled by hand, forming for example a foam ball.
  • the document US 4,603,812 discloses a portable foam producing device having a pump sucking a foaming liquid contained in a tank. A lever activates the pump to project the foaming liquid to the outside.
  • the device includes an air inlet and a rigid net at the outlet of the device. If this device makes it possible to obtain a foam of sufficient quality for housekeeping, it does not make it possible to obtain a sufficiently light and dense foam to be used, for example, for cosmetic products.
  • the document EP 0 718 041 A1 discloses a foaming nozzle assembly having rigid threads for providing a foam suitable for housekeeping products. In the same way as the previous document, the assembly does not make it possible to obtain a sufficiently light and dense foam to be used, for example, for cosmetic products.
  • the document US 5,816,503 discloses a foam producing device whose structure is adapted to the settings for varying the structure of the foam, having a net and having sealing means to prevent leakage but does not propose a pump adapted to use this device.
  • the present invention therefore aims to overcome one or more of the disadvantages of the prior art by providing a simple device for producing foam, associated with a lever pump, to produce a light and dense foam used in the field of cosmetics .
  • This object is achieved by a foam generating device associated with a pump according to claim 1.
  • Claims 2 to 11 show other features of the device.
  • the figure 1 represents a manual lever pump (A, B, C) (C) equipped with a flexible and resilient curved net (1a) for filtering.
  • the pump is portable by hand.
  • the pump comprises a pump mechanism (A) fed by a reservoir (B) comprising a liquid, such as foaming liquid.
  • the pump mechanism (A) is activated by a user by actuating a pump lever (C) to draw liquid into the tank (B) and expel the liquid, with a determined speed, through an expulsion head (2). pump.
  • the lever pump (C) comprises a lever arm to increase the pumping effort and to increase the pumped liquid flow.
  • the speed of the expelled liquid is, for example, increased compared to a vertical piston pump.
  • the sectional detail of the figure 1 represents a first type of expulsion head (2a).
  • An expulsion conduit (C2a) opens, for example, into an air chamber (72a) closed at an expulsion port (52a) by one or more filter threads.
  • the chamber (72a) of air is filled with ambient air, via the net, and, according to one embodiment, produces an air supply intended to be mixed with the foaming liquid to produce foam.
  • An expulsion head (2a) of circular or square section is for example associated with a chamber (72a) of cylindrical or parallelepiped air respectively.
  • the chamber (72a) is for example delimited by thin side walls, an anterior wall, into which the evacuation duct (C2a) opens, arranged in front of the expulsion orifice (52a) closed by a net (1a , 1b) filtering.
  • the flow direction (S) of the liquid is indicated by an arrow (S), the liquid being expelled from the reservoir to the filtering net, by the expulsion duct.
  • the filter net has a flat shape in its rest position and comprises, for example, a central disk, fixed to thin and flexible bands extending to a peripheral boundary.
  • the net is of rounded shape or in portion of sphere, and is made for example by a thin plastic mesh, as shown in FIG. figure 1 .
  • a net (1b) plane is arranged in series with a thread (1a) rounded, oscillating both to the passage of the liquid.
  • the filtering thread or nets are for example glued, on their periphery, on the edge of the expulsion orifice or in the expulsion line (C2b) of the expulsion head (2a, 2b) or a mouthpiece (3a, 3b).
  • the expelled foaming product comprises an active agent, optionally combined with a foaming agent, diluted in water, and is thus mixed with air by the oscillating thread (s).
  • the liquid, expelled by the pumping mechanism is associated with the air supplied by the air supply.
  • the thread or nets are stretched and relax alternately, the passage of the foaming liquid.
  • the deformation and the oscillation of the elastic thread thus make a stirring of the foaming liquid in the air to turn the foaming liquid into foam.
  • the user activating the pump by means of its pumping lever, then uses the foam produced in the form of a dense and voluminous foam jet.
  • the expulsion head (2b) comprises one or a plurality of air supply ducts (62b).
  • the ambient air is, for example, sucked into an air supply duct (62b) opening at the level of the liquid expulsion duct (C2b) through an air inlet.
  • the suction of the air is for example associated with the expulsion of liquid, the flow of liquid causing a flow of air.
  • a convex net (1a) or plane (1b) is disposed at the orifice (52b) of expulsion, as shown in FIG. figure 2 , or in the expulsion conduit (C2b) downstream of the air inlet (E62b) and upstream of the expulsion port (52b), as shown in FIG. figure 3 .
  • a tip (3a, 3b) equipped with a thread is mounted on an expulsion head of a pump.
  • the tip is mounted tight or by screwing or gluing and arranged around the head (2c) expulsion.
  • the tip is removable and adapts to existing pumps.
  • the tip (3a and 3b respectively) comprises a conduit (C3a and C3b respectively) which extends the conduit (C2c) expulsion of the pump to an orifice (5b and 5c respectively) expulsion of the nozzle .
  • One or more filtering threads are for example disposed at this expulsion orifice (53a, 53b) or upstream of this expulsion orifice (53a, 53b) in the duct (C3a, C3b) of the nozzle and downstream of the one or more air supply inlets (E63a, E63b, E62b).
  • an air passage (63a, 63b) is arranged in the mouthpiece (3a, 3b) to provide an air supply, for lever pumps carrying out an expulsion of liquid, via their duct (C2c). expulsion, without additional air.
  • the diameter of the duct (C3a) of the nozzle (3a) narrows towards its end (53a).
  • the narrowing is for example progressive and the duct (C3a) of the nozzle has a frustoconical shape whose small base corresponds to the orifice (53a) expulsion of the foaming liquid.
  • This narrowing has the advantage of increasing the speed of the fluid composed of foaming liquid and air. The increase of the fluid velocity is accompanied by an increase in the oscillations of the filter thread (1a, 1b).
  • this guy nozzle (3a) whose conduit (C3a) is narrowed, allows adjustment of the expulsion rate of the fluid comprising air and foaming liquid.
  • the filtering thread or nets advantageously disposed in an expulsion duct of an expulsion head or nozzle, upstream of the expulsion orifice, are protected by the rigid structure of the head (2b) expulsion or the tip (3b), against shocks with rigid objects that may damage the thread or nets.
  • figure 9 represents, in a nonlimiting manner, the same end piece (3b) as on the figure 7 , but advanced by a distance (d) determined with respect to the head (2c) of expulsion.
  • the tip When the tip is mounted on the expulsion head, in a fully depressed position, as shown in FIG. figure 7 the end (D1) of the expulsion head bears against a shoulder (D2) inside the end piece (3b). This fully depressed position then produces a determined broad foam jet.
  • the shoulder (D2) inside the end piece (3b) is at a determined distance (d) from the end (D2) of the expulsion head (2c), to produce a thinner foam jet than in the fully depressed position, shown in figure 7 .
  • the tip held on the expulsion head by clamping or screwing is movable in translation relative to the expulsion head, the adjustable position of the tip, more or less advanced relative to the expulsion head, determining an adjustment of the width of the foam jet.
  • This adjustment of the position of the nozzle is applied with any type of tip (3a, 3b) mounted by screwing or tightening on the pump's expulsion head.

Landscapes

  • Nozzles (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Molding Of Porous Articles (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Glass Compositions (AREA)
  • Catching Or Destruction (AREA)

Abstract

The device for producing a foam associated with a pump, comprises a first filtering net (1a) disposed through an expulsion conduit (C2a), a second filtering net disposed in a downstream of the first net, and a removable tip extension. The first net is associated with a unit for supplying a flow of air in an upstream of the net with respect to a flow of liquid, and flexible to oscillate when the liquid expelled through the first net to mix the liquid with air and produce the foam. The pump comprises a reservoir containing a foaming liquid, and a pumping unit having a pump activation lever. The device for producing a foam associated with a pump, comprises a first filtering net (1a) disposed through an expulsion conduit (C2a), a second filtering net disposed in a downstream of the first net, and a removable tip extension. The first net is associated with a unit for supplying a flow of air in an upstream of the net with respect to a flow of liquid, and flexible to oscillate when the liquid expelled through the first net to mix the liquid with air and produce the foam. The pump comprises a reservoir containing a foaming liquid, and a pumping unit having a pump activation lever to suction the liquid and expel the liquid through the conduit to a minimum determined speed. The supplying unit comprises a chamber (72a) that leads the air in the conduit, and a passage to supply the air communicated with the external air of the distribution conduit and by which the air is sucked during the passage of liquid expelled by an inlet. The chamber comprises an expulsion opening (52a) laid out into the conduit and closed by the first net, and a peripheral zone connected to a wall of the conduit in an upstream of the opening. The removable tip extension is moved in translation between holding and determining positions respectively to produce a jet of foam. The passage of air is disposed in the extension at the junction of an expulsion head (2). The conduit in the tip has a removable section shrinkable towards the opening. The first net comprises central disc connected to the periphery of the net by thin elastic bands. The second filtering net is flexible and disposed in a downstream of the first net with respect to the flow of the liquid. The first and the second filtering nets are rounded and curved towards the outside. The peripheral zone of the second net is connected to an edge of the opening or to the wall of the conduit.

Description

L'invention concerne le domaine des dispositifs de production de mousse par des pompes à main, fonctionnant à base de liquide moussant. Elle concerne plus particulièrement un dispositif pour produire de la mousse destinée à être manipulée à la main, comme par exemple dans le domaine des cosmétiques.The invention relates to the field of devices for producing foam by hand pumps, operating on the basis of foaming liquid. It relates more particularly to a device for producing foam intended to be handled by hand, as for example in the field of cosmetics.

Certaines pompes, munies d'un mécanisme de pompage activé par l'utilisateur au moyen d'un levier, permettent d'expulser des produits liquides avec une vitesse assez importante pour projeter ces produits. Ce type de pompe permet, par exemple, de projeter des produits d'entretien ménager sur des vitres ou du linge ou encore, dans le domaine des cosmétiques, de projeter une brume d'huile solaire sur la peau. Certains produits, par exemple de lavage, sont projetés sous une forme semi moussante, mais il n'existe pas de pompe à levier produisant de la mousse de qualité suffisante pour être utilisée dans le domaine des cosmétiques. Les appareils de production de mousse, utilisés dans le domaine des cosmétiques, nécessitent en effet de produire de la mousse dense et volumineuse pour être manipulée à la main, formant par exemple une boule de mousse.Some pumps, equipped with a user-activated pumping mechanism by means of a lever, make it possible to expel liquid products with a velocity large enough to project these products. This type of pump allows, for example, to project housekeeping products on windows or laundry or, in the field of cosmetics, to spray a mist of solar oil on the skin. Some products, for example washing, are projected in a semi foaming form, but there is no lever pump producing foam of sufficient quality to be used in the field of cosmetics. The foam production apparatuses, used in the field of cosmetics, indeed require the production of dense and voluminous foam to be handled by hand, forming for example a foam ball.

La demande de brevet WO 2004/078359 déposée par la société AIRSPRAY décrit un appareil rechargeable disposant d'une pompe spéciale et produisant de la mousse, utilisée, par exemple, dans le domaine des cosmétiques. Ce type d'appareil comporte néanmoins une pompe complexe comprenant une chambre de liquide et une chambre d'air dont les remplissages sont contrôlés par un mécanisme comprenant de nombreux éléments assemblés de façon complexe, en comparaison des pompes courantes pour produit liquide. Sa complexité implique donc que l'appareil est plus coûteux qu'une pompe classique rechargeable. De plus ce type de pompe, activée par la descente manuelle d'un piston, procure une force d'expulsion de produit liquide très inférieure aux capacités d'une pompe à levier. Le levier procure en effet une course plus importante et une augmentation de la force d'expulsion.The patent application WO 2004/078359 filed by the company AIRSPRAY describes a rechargeable device with a special pump and producing foam, used, for example, in the field of cosmetics. This type of apparatus, however, comprises a complex pump comprising a liquid chamber and an air chamber whose fills are controlled by a mechanism comprising many elements assembled in a complex manner, in comparison with the current pumps for liquid product. Its complexity therefore implies that the device is more expensive than a conventional rechargeable pump. In addition this type of pump, activated by the manual lowering of a piston, provides a liquid product expulsion force much lower than the capacity of a pump. the sink. The lever provides a greater stroke and an increase in the expulsion force.

Le document US 4 603 812 décrit un dispositif portable de production de mousse possédant une pompe aspirant un liquide moussant contenu dans un réservoir. Un levier permet d'activer la pompe pour projeter le liquide moussant vers l'extérieur. Le dispositif inclut une entrée d'air et un filet rigide en sortie du dispositif. Si ce dispositif permet d'obtenir une mousse de qualité suffisante pour l'entretien ménager, il ne permet pas d'obtenir une mousse suffisamment légère et dense pour être utilisée, par exemple, pour des produits cosmétiques.The document US 4,603,812 discloses a portable foam producing device having a pump sucking a foaming liquid contained in a tank. A lever activates the pump to project the foaming liquid to the outside. The device includes an air inlet and a rigid net at the outlet of the device. If this device makes it possible to obtain a foam of sufficient quality for housekeeping, it does not make it possible to obtain a sufficiently light and dense foam to be used, for example, for cosmetic products.

Le document EP 0 718 041 A1 décrit un assemblage à buse moussante possédant des filets rigides pour fournir une mousse adaptée aux produits d'entretien ménagers. De la même manière que le document précédent, l'assemblage ne permet pas d'obtenir une mousse suffisamment légère et dense pour être utilisée, par exemple, pour des produits cosmétiques.The document EP 0 718 041 A1 discloses a foaming nozzle assembly having rigid threads for providing a foam suitable for housekeeping products. In the same way as the previous document, the assembly does not make it possible to obtain a sufficiently light and dense foam to be used, for example, for cosmetic products.

Le document US 5 816 503 décrit un dispositif de production de mousse dont la structure est adaptée aux réglages pour faire varier la structure de la mousse, ayant un filet et possédant des moyens de scellage pour prévenir les fuites mais ne propose pas de pompe adaptée pour utiliser ce dispositif.The document US 5,816,503 discloses a foam producing device whose structure is adapted to the settings for varying the structure of the foam, having a net and having sealing means to prevent leakage but does not propose a pump adapted to use this device.

La présente invention a donc pour but de remédier à un ou plusieurs des inconvénients de l'art antérieur en proposant un dispositif simple de production de mousse, associé à une pompe à levier, pour produire une mousse légère et dense utilisable dans le domaine des cosmétiques.
Cet objectif est atteint par un dispositif de production de mousse associé à une pompe suivant la revendication 1.The present invention therefore aims to overcome one or more of the disadvantages of the prior art by providing a simple device for producing foam, associated with a lever pump, to produce a light and dense foam used in the field of cosmetics .
This object is achieved by a foam generating device associated with a pump according to claim 1.

Les revendications 2 à 11 présentent d'autres caractéristiques du dispositif.Claims 2 to 11 show other features of the device.

D'autres particularités et avantages de la présente invention apparaîtront plus clairement à la lecture de la description ci-après, faite en référence aux dessins annexés, dans lesquels :

  • la figure 1 représente une vue de côté d'un exemple de pompe à levier équipée d'un dispositif de production de mousse selon l'invention et un détail en coupe comprenant la tête d'expulsion de la pompe;
  • les figures 2, 3 et 5 représentent des vues en coupe d'autres exemples de tête d'expulsion associées à des dispositifs de production de mousse selon l'invention ;
  • la figure 4 représente une vue en perspective, d'un autre exemple de tête d'expulsion associée à un dispositif de production de mousse selon l'invention;
  • les figures 6 à 8 représentent des vues en coupe d'exemples d'embouts de production de mousse selon l'invention adaptés chacun sur une tête d'expulsion ;
  • la figure 9 représente une vue en coupe d'exemple d'embout de production de mousse selon l'invention avancé par rapport à la tête d'expulsion.
Other features and advantages of the present invention will appear more clearly on reading the description below, made with reference to the accompanying drawings, in which:
  • the figure 1 is a side view of an exemplary lever pump equipped with a foam producing device according to the invention and a sectional detail comprising the pump expulsion head;
  • the Figures 2, 3 and 5 show sectional views of other examples of expulsion heads associated with foam production devices according to the invention;
  • the figure 4 represents a perspective view of another example of an expulsion head associated with a foam production device according to the invention;
  • the Figures 6 to 8 are cross-sectional views of examples of foam production tips according to the invention each adapted to an expulsion head;
  • the figure 9 is an exemplary sectional view of a foam producing nozzle according to the invention advanced with respect to the expulsion head.

L'invention va être décrite en référence aux figures précédemment citées. La figure 1 représente une pompe (A, B, C) manuelle à levier (C) équipée d'un filet (1a) bombé souple et élastique de filtrage. De manière non limitative, la pompe est portable à la main. La pompe comprend un mécanisme (A) de pompage alimenté par un réservoir (B) comprenant un liquide, comme par exemple du liquide moussant. Le mécanisme (A) de pompage est activé par un utilisateur en actionnant un levier (C) de pompage pour aspirer du liquide dans le réservoir (B) et expulser ce liquide, avec une vitesse déterminée, par une tête (2) d'expulsion de la pompe. En comparaison d'une pompe à piston vertical baissé par un utilisateur, la pompe à levier (C) comprend un bras de levier pour augmenter l'effort de pompage et pour augmenter le débit de liquide pompé. La vitesse du liquide expulsé est, par exemple, augmentée, en comparaison d'une pompe à piston vertical.The invention will be described with reference to the figures mentioned above. The figure 1 represents a manual lever pump (A, B, C) (C) equipped with a flexible and resilient curved net (1a) for filtering. Without limitation, the pump is portable by hand. The pump comprises a pump mechanism (A) fed by a reservoir (B) comprising a liquid, such as foaming liquid. The pump mechanism (A) is activated by a user by actuating a pump lever (C) to draw liquid into the tank (B) and expel the liquid, with a determined speed, through an expulsion head (2). pump. In comparing a vertical piston pump lowered by a user, the lever pump (C) comprises a lever arm to increase the pumping effort and to increase the pumped liquid flow. The speed of the expelled liquid is, for example, increased compared to a vertical piston pump.

Le détail en coupe de la figure 1 représente un premier type de tête (2a) d'expulsion. Un conduit (C2a) d'expulsion débouche, par exemple, dans une chambre (72a) d'air fermée au niveau d'un orifice (52a) d'expulsion par un ou plusieurs filets de filtrage. La chambre (72a) d'air est remplie par l'air ambiant, via le filet, et réalise, selon un exemple de réalisation, une alimentation en air destiné à être mélangé au liquide moussant pour produire de la mousse. Une tête (2a) d'expulsion de section circulaire ou respectivement carrée est par exemple associée à une chambre (72a) d'air cylindrique ou respectivement parallélépipédique. La chambre (72a) est par exemple délimitée par des parois latérales fines, une paroi antérieure, dans laquelle débouche le conduit (C2a) d'expulsion, disposée en face de l'orifice (52a) d'expulsion fermé par un filet (1a, 1b) de filtrage. Le sens (S) d'écoulement du liquide est indiqué par une flèche (S), le liquide étant expulsé du réservoir vers le filet de filtrage, par le conduit d'expulsion.The sectional detail of the figure 1 represents a first type of expulsion head (2a). An expulsion conduit (C2a) opens, for example, into an air chamber (72a) closed at an expulsion port (52a) by one or more filter threads. The chamber (72a) of air is filled with ambient air, via the net, and, according to one embodiment, produces an air supply intended to be mixed with the foaming liquid to produce foam. An expulsion head (2a) of circular or square section is for example associated with a chamber (72a) of cylindrical or parallelepiped air respectively. The chamber (72a) is for example delimited by thin side walls, an anterior wall, into which the evacuation duct (C2a) opens, arranged in front of the expulsion orifice (52a) closed by a net (1a , 1b) filtering. The flow direction (S) of the liquid is indicated by an arrow (S), the liquid being expelled from the reservoir to the filtering net, by the expulsion duct.

De manière non limitative, comme représenté à la figure 4, le filet de filtrage a une forme plane dans sa position de repos et comprend, par exemple, un disque central, fixé à des bandes fines et souples s'étendant jusqu'à une limite périphérique.In a non-limiting way, as shown in FIG. figure 4 , the filter net has a flat shape in its rest position and comprises, for example, a central disk, fixed to thin and flexible bands extending to a peripheral boundary.

Selon un autre exemple, le filet est de forme arrondie ou en portion de sphère, et est réalisé par exemple par un maillage fin en plastique, comme représenté à la figure 1.In another example, the net is of rounded shape or in portion of sphere, and is made for example by a thin plastic mesh, as shown in FIG. figure 1 .

Selon un exemple de réalisation, comme représenté à la figure 5, un filet (1 b) plan est disposé en série avec un filet (1a) arrondi, oscillant tous les deux au passage du liquide.According to an exemplary embodiment, as shown in FIG. figure 5 , a net (1b) plane is arranged in series with a thread (1a) rounded, oscillating both to the passage of the liquid.

Le ou les filets de filtrage sont par exemple collés, sur leur périphérie, sur le bord de l'orifice d'expulsion ou dans le conduit (C2b) d'expulsion de la tête (2a, 2b) d'expulsion ou d'un embout (3a, 3b).The filtering thread or nets are for example glued, on their periphery, on the edge of the expulsion orifice or in the expulsion line (C2b) of the expulsion head (2a, 2b) or a mouthpiece (3a, 3b).

Le produit moussant expulsé comprend un agent actif, éventuellement associé à un agent moussant, dilué dans de l'eau, est ainsi brassé avec de l'air par le ou les filets en oscillation. Le liquide, expulsé par le mécanisme de pompage, est associé à de l'air fourni par l'alimentation en air. Le ou les filets se tendent et se détendent alternativement, au passage du liquide moussant. La déformation et l'oscillation du filet élastique réalisent ainsi un brassage du liquide moussant dans l'air pour transformer le liquide moussant en mousse. L'utilisateur, activant la pompe par son levier de pompage, utilise alors la mousse produite sous la forme d'un jet de mousse dense et volumineuse.The expelled foaming product comprises an active agent, optionally combined with a foaming agent, diluted in water, and is thus mixed with air by the oscillating thread (s). The liquid, expelled by the pumping mechanism, is associated with the air supplied by the air supply. The thread or nets are stretched and relax alternately, the passage of the foaming liquid. The deformation and the oscillation of the elastic thread thus make a stirring of the foaming liquid in the air to turn the foaming liquid into foam. The user, activating the pump by means of its pumping lever, then uses the foam produced in the form of a dense and voluminous foam jet.

Selon un autre exemple de réalisation de l'alimentation en air, comme représenté aux figures 2 et 3, la tête (2b) d'expulsion comprend un ou plusieurs conduits (62b) d'alimentation en air. L'air ambiant est par exemple aspiré dans un conduit (62b) d'alimentation en air, débouchant au niveau du conduit (C2b) d'expulsion de liquide, par une entrée d'air. L'aspiration de l'air est par exemple associée à l'expulsion de liquide, le flux de liquide entraînant un flux d'air. De manière non limitative, un filet bombé (1a) ou plan (1 b) est disposé au niveau de l'orifice (52b) d'expulsion, comme représenté à la figure 2, ou dans le conduit (C2b) d'expulsion en aval de l'entrée (E62b) d'air et en amont de l'orifice (52b) d'expulsion, comme représenté à la figure 3.According to another exemplary embodiment of the air supply, as shown in FIGS. Figures 2 and 3 , the expulsion head (2b) comprises one or a plurality of air supply ducts (62b). The ambient air is, for example, sucked into an air supply duct (62b) opening at the level of the liquid expulsion duct (C2b) through an air inlet. The suction of the air is for example associated with the expulsion of liquid, the flow of liquid causing a flow of air. Without limitation, a convex net (1a) or plane (1b) is disposed at the orifice (52b) of expulsion, as shown in FIG. figure 2 , or in the expulsion conduit (C2b) downstream of the air inlet (E62b) and upstream of the expulsion port (52b), as shown in FIG. figure 3 .

Selon un exemple de réalisation, un embout (3a, 3b) équipé d'un filet est monté sur une tête d'expulsion d'une pompe. De manière non limitative, l'embout est monté serré ou par vissage ou collage et disposé autour de la tête (2c) d'expulsion. De façon avantageuse, l'embout est démontable et s'adapte à des pompes existantes.According to an exemplary embodiment, a tip (3a, 3b) equipped with a thread is mounted on an expulsion head of a pump. In a nonlimiting manner, the tip is mounted tight or by screwing or gluing and arranged around the head (2c) expulsion. Advantageously, the tip is removable and adapts to existing pumps.

L'embout (3a et respectivement 3b) comporte un conduit (C3a et respectivement C3b) qui prolonge le conduit (C2c) d'expulsion de la pompe, jusqu'à un orifice (5b et respectivement 5c) d'expulsion de l'embout. Un ou plusieurs filets de filtrage sont par exemple disposés au niveau de cet orifice (53a, 53b) d'expulsion ou en amont de cet orifice (53a, 53b) d'expulsion, dans le conduit (C3a, C3b) de l'embout et en aval de la ou des entrées (E63a, E63b, E62b) d'alimentation en air.The tip (3a and 3b respectively) comprises a conduit (C3a and C3b respectively) which extends the conduit (C2c) expulsion of the pump to an orifice (5b and 5c respectively) expulsion of the nozzle . One or more filtering threads are for example disposed at this expulsion orifice (53a, 53b) or upstream of this expulsion orifice (53a, 53b) in the duct (C3a, C3b) of the nozzle and downstream of the one or more air supply inlets (E63a, E63b, E62b).

De manière non limitative, un passage (63a, 63b) d'air est disposé dans l'embout (3a, 3b) pour réaliser une alimentation en air, pour des pompes à levier réalisant une expulsion de liquide, par leur conduit (C2c) d'expulsion, sans air additionnel.In a nonlimiting manner, an air passage (63a, 63b) is arranged in the mouthpiece (3a, 3b) to provide an air supply, for lever pumps carrying out an expulsion of liquid, via their duct (C2c). expulsion, without additional air.

De manière non limitative, comme représenté à la figure 6, le diamètre du conduit (C3a) de l'embout (3a) se rétrécie vers son extrémité (53a). Le rétrécissement est par exemple progressif et le conduit (C3a) de l'embout a une forme tronconique dont la petite base correspond à l'orifice (53a) d'expulsion du liquide moussant. Ce rétrécissement a pour avantage d'augmenter la vitesse du fluide composé de liquide moussant et d'air. L'augmentation de la vitesse du fluide est accompagnée d'une augmentation des oscillations du ou des filets (1a, 1b) de filtrage. D'autre part ce type d'embout (3a) dont le conduit (C3a) est rétréci, permet un réglage de la vitesse d'expulsion du fluide comprenant de l'air et du liquide moussant.In a non-limiting way, as shown in FIG. figure 6 , the diameter of the duct (C3a) of the nozzle (3a) narrows towards its end (53a). The narrowing is for example progressive and the duct (C3a) of the nozzle has a frustoconical shape whose small base corresponds to the orifice (53a) expulsion of the foaming liquid. This narrowing has the advantage of increasing the speed of the fluid composed of foaming liquid and air. The increase of the fluid velocity is accompanied by an increase in the oscillations of the filter thread (1a, 1b). On the other hand this guy nozzle (3a) whose conduit (C3a) is narrowed, allows adjustment of the expulsion rate of the fluid comprising air and foaming liquid.

Le ou les filets de filtrage disposés, de façon avantageuse, dans un conduit d'expulsion d'une tête d'expulsion ou d'un embout, en amont de l'orifice d'expulsion, sont protégés, par la structure rigide de la tête (2b) d'expulsion ou de l'embout (3b), contre des chocs avec des objets rigides pouvant endommager le ou les filets.The filtering thread or nets advantageously disposed in an expulsion duct of an expulsion head or nozzle, upstream of the expulsion orifice, are protected by the rigid structure of the head (2b) expulsion or the tip (3b), against shocks with rigid objects that may damage the thread or nets.

L'exemple de la figure 9 représente, de manière non limitative, le même embout (3b) que sur la figure 7, mais avancé d'une distance (d) déterminée par rapport à la tête (2c) d'expulsion. Lorsque l'embout est monté sur la tête d'expulsion, dans une position complètement enfoncée, comme représentée à la figure 7, l'extrémité (D1) de la tête d'expulsion est en appui contre un épaulement (D2) intérieur de l'embout (3b). Cette position complètement enfoncée produit alors un jet de mousse large déterminé. D'autre part, dans une position avancée, comme représenté à la figure 9, l'épaulement (D2) intérieur de l'embout (3b) est à une distance (d) déterminée de l'extrémité (D2) de la tête (2c) d'expulsion, pour produire un jet de mousse plus fin que dans la position complètement enfoncée, représentée à la figure 7. L'embout maintenu sur la tête d'expulsion par serrage ou par vissage est mobile en translation par rapport à la tête d'expulsion, la position réglable de l'embout, plus ou moins avancé par rapport à la tête d'expulsion, déterminant un réglage de la largeur du jet de mousse. Ce réglage de la position de l'embout est appliqué avec tout type d'embout (3a, 3b) monté par vissage ou serrage sur la tête d'expulsion de la pompe.The example of figure 9 represents, in a nonlimiting manner, the same end piece (3b) as on the figure 7 , but advanced by a distance (d) determined with respect to the head (2c) of expulsion. When the tip is mounted on the expulsion head, in a fully depressed position, as shown in FIG. figure 7 the end (D1) of the expulsion head bears against a shoulder (D2) inside the end piece (3b). This fully depressed position then produces a determined broad foam jet. On the other hand, in an advanced position, as shown in figure 9 , the shoulder (D2) inside the end piece (3b) is at a determined distance (d) from the end (D2) of the expulsion head (2c), to produce a thinner foam jet than in the fully depressed position, shown in figure 7 . The tip held on the expulsion head by clamping or screwing is movable in translation relative to the expulsion head, the adjustable position of the tip, more or less advanced relative to the expulsion head, determining an adjustment of the width of the foam jet. This adjustment of the position of the nozzle is applied with any type of tip (3a, 3b) mounted by screwing or tightening on the pump's expulsion head.

Il doit être évident pour les personnes versées dans l'art que la présente invention permet des modes de réalisation sous de nombreuses autres formes spécifiques sans l'éloigner du domaine d'application de l'invention comme revendiqué. Par conséquent, les présents modes de réalisation doivent être considérés à titre d'illustration, mais peuvent être modifiés dans le domaine défini par la portée des revendications jointes, et l'invention ne doit pas être limitée aux détails donnés ci-dessus.It should be obvious to those skilled in the art that the present invention allows embodiments in many other specific forms without departing from the scope of the invention as claimed. Therefore, the present embodiments should be considered by way of illustration, but may be modified within the scope defined by the scope of the appended claims, and the invention should not be limited to the details given above.

Claims (11)

  1. Device for producing foam associated with a pump, the pump comprising at least:
    - a reservoir (B) containing foaming liquid,
    - pumping means (A) comprising a pump activation lever (C) in order to draw in the liquid from the reservoir and to expel this liquid through a conduit (C2a; C2b; C2c, C3a; C2c, C3b) for expulsion at a specified minimum rate,
    the said device comprising a first filtering mesh (1a; 1b) disposed through an expulsion conduit, the first mesh being associated with means (72a; 63b; 62b) for supplying a flow of air upstream of the first mesh with respect to the direction (S) of flow of the liquid, characterised in that the first mesh is flexible in order to oscillate when the expelled liquid passes through the first mesh in order to mix the liquid with the air and produce foam.
  2. Device for producing foam as claimed in Claim 1, characterised in that the air supply means comprise an air chamber (72a) into which the expulsion conduit (C2a) opens, the chamber comprising an expulsion orifice (52a) disposed facing the expulsion conduit and closed by the first mesh, a peripheral zone of the first mesh being connected to the edge of the expulsion orifice.
  3. Device for producing foam as claimed in Claim 1, characterised in that the air supply means comprise at least one air passage (62b; 63a; 63b) providing communication between the distribution conduit and the external air and by which the air is drawn in during the passage of liquid expelled by an air inlet (E62b; E63a; E63b) provided in the expulsion conduit upstream of the first filtering mesh with respect to the direction (S) of flow of the liquid.
  4. Device for producing foam as claimed in Claim 3, characterised in that the expulsion conduit opens outside the pump through an expulsion orifice (52b, 53a, 53b), a peripheral zone of the first mesh being connected to the edge of the expulsion orifice.
  5. Device for producing foam as claimed in Claim 3, characterised in that the expulsion conduit opens outside the pump through an expulsion orifice (52b, 53b), a peripheral zone of the first mesh being connected to the wall of the expulsion conduit (C2b; C2c; C3b) upstream of the expulsion orifice with respect to the direction (S) of flow of the liquid.
  6. Device for producing foam as claimed in Claim 4 or Claim 5, characterised in that it comprises a removable tip extending the expulsion conduit (C2c), the air passage being disposed in the removable tip at the junction with an expulsion head in which part of the expulsion conduit (C2c) is provided.
  7. Device for producing foam as claimed in Claim 6, characterised in that the expulsion conduit (C3a) in the removable tip (3a) has a cross-section which narrows towards the expulsion orifice (53a).
  8. Device for producing foam as claimed in Claim 6 or Claim 7, characterised in that the removable tip (3a) is movable in translation with respect to the expulsion head between a defined recessed position and respectively a defined advanced position in order to produce a wide or fine jet of foam respectively.
  9. Device for producing foam as claimed in any one of Claims 1 to 8, characterised in that the first mesh (1a) is rounded and curved towards the exterior.
  10. Device for producing foam as claimed in any one of Claims 1 to 8, characterised in that the first mesh (1b) is planar and comprises a central disc connected to the periphery of the first mesh by fine flexible strips.
  11. Device for producing foam as claimed in Claim 10, characterised in that it comprises a second rounded flexible mesh (1a), curved towards the exterior and disposed downstream of the first mesh with respect to the direction (S) of flow of the liquid, a peripheral zone of the second mesh being connected to the edge of the expulsion orifice or to the wall of the expulsion conduit (C2b; C2c, C3b).
EP07291242A 2006-10-12 2007-10-11 Device for producing foam Not-in-force EP1914002B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0608928A FR2907033B1 (en) 2006-10-12 2006-10-12 OSCILLATING DEVICE FOR PRODUCING FOAM

Publications (3)

Publication Number Publication Date
EP1914002A2 EP1914002A2 (en) 2008-04-23
EP1914002A3 EP1914002A3 (en) 2008-04-30
EP1914002B1 true EP1914002B1 (en) 2010-02-24

Family

ID=37859631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07291242A Not-in-force EP1914002B1 (en) 2006-10-12 2007-10-11 Device for producing foam

Country Status (4)

Country Link
EP (1) EP1914002B1 (en)
AT (1) ATE458552T1 (en)
DE (1) DE602007004916D1 (en)
FR (1) FR2907033B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603812A (en) * 1978-06-27 1986-08-05 The Dow Chemical Company Foam-generating pump sprayer
EP0024333B1 (en) * 1979-08-16 1984-03-07 Canyon Corporation Foam dispenser
US5373991A (en) * 1993-04-09 1994-12-20 Contico International, Inc. Foamer trigger dispenser with sealing device
US5611490A (en) * 1994-12-19 1997-03-18 Calmar Inc. Foamer assembly for fluid dispenser
FR2790742B1 (en) * 1999-03-10 2001-05-04 Oreal UNIT FOR PACKAGING AND DISTRIBUTION UNDER PRESSURE OF A PRODUCT, ESPECIALLY COSMETIC
NL1022841C2 (en) 2003-03-04 2004-09-07 Airspray Nv Dispensing device.

Also Published As

Publication number Publication date
DE602007004916D1 (en) 2010-04-08
EP1914002A2 (en) 2008-04-23
FR2907033B1 (en) 2008-12-26
EP1914002A3 (en) 2008-04-30
ATE458552T1 (en) 2010-03-15
FR2907033A1 (en) 2008-04-18

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