EP2879806B1 - Rechargable foam dispenser - Google Patents

Rechargable foam dispenser Download PDF

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Publication number
EP2879806B1
EP2879806B1 EP13752864.2A EP13752864A EP2879806B1 EP 2879806 B1 EP2879806 B1 EP 2879806B1 EP 13752864 A EP13752864 A EP 13752864A EP 2879806 B1 EP2879806 B1 EP 2879806B1
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EP
European Patent Office
Prior art keywords
chamber
liquid
air
bell
outlet opening
Prior art date
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Active
Application number
EP13752864.2A
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German (de)
French (fr)
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EP2879806A1 (en
Inventor
Gérard Sannier
Francis Poizot
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Individual
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Individual
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Publication of EP2879806A1 publication Critical patent/EP2879806A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • 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
    • B05B7/0025—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 with a compressed gas supply
    • B05B7/0031—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 with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0037—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 with a compressed gas supply 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • 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
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
    • 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
    • B05B11/1073—Springs
    • 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
    • B05B11/1087—Combination of liquid and air pumps
    • 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
    • B05B11/0005—Components or details
    • B05B11/0059—Components or details allowing operation in any orientation, e.g. for discharge in inverted position

Definitions

  • the invention relates to the field of manually operated foam producing devices operating on the basis of foaming and refillable liquid. It relates more particularly to a device that can be used in all positions, standing, lying down or turned over, to produce foam.
  • foam producing devices for producing foam from foaming liquid.
  • the patent application WO 2004/078359 and the patent EP 1 190 775 describe, for example, a type of manual device producing foam from a foaming liquid.
  • this type of foam producing device does not work properly in all positions.
  • This type of device can not produce foam, for example, when the device is returned or that device is tilted horizontally and that its tank is emptied more than half.
  • a foam production device comprising a foaming liquid supply tank, of variable capacity, a liquid chamber communicating with the foaming liquid supply tank through an inlet opening, and with a chamber of mixing by an outlet opening of the liquid, a first non-return valve disposed at the inlet opening of the liquid chamber, a second non-return valve, arranged at the liquid outlet opening, allowing a flow leaving the liquid chamber and comprising elastic means for holding in the closed position, an air chamber comprising at least one inlet with a third non-return valve allowing the supply of air coming from the outside and an opening air outlet communicating with the mixing chamber, gripping means for a user, for compressing the air chamber and the liquid chamber to expel liquid and air.
  • the present invention aims to remedy one or more of the disadvantages of the prior art by providing a rechargeable foam production device, operated by hand and operating in all positions, simple and safe design.
  • the air chamber further comprises at least one inlet with a third non-return valve for supplying air from outside and an air outlet opening communicating with the mixing chamber.
  • the second non-return sealing valve comprises a plastic boss that closes the outlet opening of the liquid, the boss being held by elastic tabs fixed to the mixing chamber, the stirring means comprising a thread or a porous element disposed downstream of the liquid outlet opening and the air outlet opening, with respect to a flow towards the expulsion port.
  • the second non-return sealing valve comprises a ball pushed against a frustoconical wall widening towards the ball and realizing the edges of the outlet of the liquid chamber, the ball being pushed by an elastic element in bearing against at least one bearing abutment of the mixing chamber.
  • the elastic element is made by a spring
  • the stirring means comprising a net or a porous element disposed downstream of the air outlet opening and the liquid outlet opening, by relative to a flow towards the expulsion orifice.
  • the elastic element is formed by a piece of elastic porous foam disposed downstream of the air outlet opening, with respect to a flow towards the expulsion orifice to achieve the stirring of air and foaming liquid.
  • the sealing check valve comprises a deformable portion to ensure a tight closure of the liquid outlet opening.
  • the air chamber comprises two cylindrical walls centered around the same axis and joining by the bottom of the air chamber, a piston, in which are formed the inlet for the air supply and the air outlet opening, closing the air chamber and sliding along the axis of the air chamber, the piston of the air chamber being pushed towards the bottom of the air chamber by the action of the user on a protruding portion of the piston or the piston being remote from the bottom of the chamber by the action of the return means, the biasing means being arranged in the air chamber, resting on the bottom at the base of the bell.
  • the liquid chamber is disposed in the center of the air chamber, the liquid chamber corresponding to the space under the bell of the bell-shaped return means of the same axis as the air chamber and at the top of which is made the liquid outlet opening, the inlet opening of the liquid chamber being made at the base of the bell.
  • the air chamber comprises a plurality of air inlets, disposed at the periphery of the air chamber, and in front of which a diaphragm valve is held by supporting arms, in the chamber of air air.
  • the mixing chamber is adjacent to the liquid chamber, an air duct joining the outlet of the air chamber (3) to the mixing chamber, the expulsion orifice being disposed immediately in output of the brewing means.
  • the sealing means comprises a lip formed at the periphery of larger diameter of the bell to press against a wall of the chamber around the liquid inlet.
  • the bell comprises a rigid peripheral ring connected to the lip and bearing against the side walls of the air chamber.
  • the sealing means comprise a lip formed at the periphery of the largest diameter of the bell to fit into an annular groove formed on a wall around the liquid inlet.
  • the bell comprises a rigid peripheral ring connected to the lip and bearing against the wall around the liquid inlet.
  • the compression means comprise a tube mechanically and sealingly connected to a sleeve extending the weakest section of the bell, the sealing means comprising a fitting of the tube with a tubular portion of the bell less elastic than the rest of the bell.
  • the foam producing device as shown in figures 1 and 7 , comprises a reservoir (100) containing foaming liquid.
  • the reservoir (100) is made, for example, inside a cylinder (101).
  • the inner wall of the cylinder (101) is of round or oval cross section.
  • a piston (102) of the same cross section is movable in the cylinder (101) and rests on the inner wall of the cylinder (101) sealingly.
  • the reservoir comprises an opening (103), in a nonlimiting manner, vis-à-vis the piston (102), through which the liquid exits the reservoir (100).
  • the liquid outlet through the opening (103) causes a translation of the piston (102) and a decrease in the volume of the reservoir (100).
  • the piston (102) movable partially delimiting the reservoir (100) allows to have an adaptable capacity of the reservoir (100), the capacity being identical to the volume of foaming liquid contained. The more the foaming liquid is sucked through the opening (103), the more the piston (102) approaches the bottom of the cylinder to reduce the capacity of the reservoir (100).
  • the patent US 5,152,434 describes for example a pump not suitable for the production of foam, equipped with a reservoir of this type.
  • the piston (102) comprises on a face opposite the tank, a fastener (104) accessible from the outside of the foam producing device, for gripping the piston (102) during disassembly to fill the tank (100).
  • the tank (100) As the flow of fluid passing through the opening (103) of the tank (100) is made in the direction out of the tank (100), the tank (100), initially completely filled with a determined foaming liquid, contains only this liquid .
  • the tank does not contain, for example, no air.
  • the opening of the reservoir (100) is always fed with foaming liquid until the reservoir (100) has reached its minimum capacity, when the piston (102) advances to an abutment position, for example against the opening (103).
  • the piston (102) When the piston (102) is in the stop position, the piston (102) is substantially in contact with the wall of the tank where the opening (103) is located.
  • a first nonreturn valve (21, 22) disposed at the inlet (103) of the chamber (2) of liquid prevents a flow of liquid returning to the reservoir (100).
  • a second non-return valve (411, 412) disposed at the outlet opening (25) of the liquid allows a flow out of the chamber (2) of liquid and comprises means (415, 413; 417) resilient holding in the closed position.
  • the second nonreturn valve (411, 412), as shown in FIGS. figures 1 , 2 , 5, 6 and 7 , is made, without limitation, by a ball (412) pushed by a member (413, 415) elastic against a frustoconical wall (411) widening towards the ball (412).
  • the ball (412) is for example made of plastic or glass, the wall (411) being, for example made of plastic.
  • the frustoconical wall (411) has a hardness determined to deform in contact with the ball (412).
  • the element (413, 415) elastic is for example in abutment against a ring (414) fixed support relative to the chamber (4) mixing.
  • the elastic element is produced, in a nonlimiting manner, by an elastic porous foam (413) exerting a force for holding the ball (412) against the frustoconical wall as shown in FIG. figure 2 .
  • the porous foam (413) also mixes the liquid with the air to produce foam.
  • the elastic element is a spring (415) bearing on the bearing ring (414) and against the ball (412), a thread (42) or a porous foam that can be arranged downstream of the ring (414) , relative to the expulsion direction (5000), for stirring the foaming liquid with air and producing foam (51).
  • the spring (415) is for example metal or plastic.
  • the sealing valve comprises a boss (416) held in abutment against the outlet (25) of the chamber (2) of liquid, by arms (417) elastic.
  • This valve (416, 417) shown in perspective at the figure 4 is, for example, held by its arms (417) pinched at their end, by pinching means of the foam producing device.
  • the boss (416) is elastic to plug the outlet opening (25) of the chamber (2) of liquid by deforming when inserted into the outlet opening (25).
  • a chamber (3) of air is for example made around the chamber (2) of liquid, as shown in FIGS. figures 1 and 7 .
  • the air chamber (3) is formed by a cylinder (31) in which a piston (32) slides in a sealed manner.
  • the cylinder (31) of the air chamber (3) is, for example, arranged coaxially and around the cylinder (23) of the liquid chamber.
  • the air chamber may include at least one inlet (33) with a third non-return valve for supplying air from outside the device and an air outlet opening (34) communicating with the chamber (4) mixing.
  • a return means (39) returns the air chamber (3) and the liquid chamber (2) to their uncompressed position for suction of air and liquid.
  • the return means (39) is a resilient, smooth-walled, bell-shaped, resilient piece which separates the liquid chamber (2) and the air chamber (3) hermetically by sealing means.
  • the biasing means (39) is a resilient and deformable piece in the form of a hemispherical or frustoconical bell.
  • the chamber (2) of liquid corresponds to the space under the means (39) of bell-shaped return of the same main axis as the chamber (3) of air.
  • the opening (25) of the liquid outlet At the top of the bell is made the opening (25) of the liquid outlet.
  • the inlet opening (103) of the liquid chamber (2) is formed on a surface (394) at the base of the bell.
  • Compression means (61) are provided for compressing the air chamber (3) and the liquid chamber (2) to expel liquid and air through the liquid outlet opening (25) and the air outlet. air outlet opening (34) in the mixing chamber (4).
  • the mixing chamber (4) can comprising brewing means (42) for producing foam (51) expelled to an outlet (5).
  • the compression means (61) comprise a tube (180) mechanically and sealingly connected to a sleeve extending the weakest section of the bell.
  • the sealing means (392) comprise a recess of the tube (180) with a tubular portion (395) of the bell.
  • the portion (395) may be less resilient than the rest of the bell. This difference in elasticity may, for example, be achieved by a greater thickness of the wall of the tubular portion (395) relative to the thickness of the remainder of the bell or by some other more rigid material of the part (395). ) tubularly attached to the rest of the bell.
  • the base of the bell also includes sealing means (391) for sealing the chamber (2) of liquid from the air chamber (3).
  • the sealing means (391) comprises a lip (391) formed at the larger diameter periphery of the bell for pressing against a wall of the chamber around the liquid inlet (103).
  • the bell may further comprise a peripheral rigid ring (393) connected to the lip (391) and resting against the side walls of the air chamber (3).
  • the sealing means (391) comprises a lip (391) formed at the periphery of the larger diameter of the bell to fit into an annular groove formed on a wall (394) around the liquid inlet (103). ) so that the chamber (2) of liquid and the chamber (3) of air are hermetically separated.
  • the bell may further comprise a peripheral ring (393) connected to the lip (391) and resting against the wall (394) around the liquid inlet (103).
  • the piston (32) of the air chamber (3) is connected to the compression means (61) and to the tube (180) mechanically and sealingly connected to the sleeve extending the weakest section of the bell.
  • the piston (32) of the chamber (3) of air being connected to the tube (180) mechanically connected and sealed to the sleeve of the bell, the bell of the means (39) of return is deformed, an overpressure to the inside the bell is created.
  • This overpressure creates a blockage of the non-return valve (22) to plug the opening (103) of the inlet of the liquid chamber.
  • a flow (2000) of liquid is then expelled through the outlet opening (25) of the chamber (2) of liquid, by pushing the valve disposed at the outlet (25) of the chamber (2) of liquid.
  • the foaming liquid is then thrown into the mixing chamber (4), as shown in FIG. figure 6 .
  • the valve disposed at the outlet of the chamber (2) of liquid comprises resilient means for holding in the closed position, for sealing the outlet opening (25) of the chamber (2) of liquid as long as the pressure in the the chamber (2) of liquid is insufficient for the liquid contained in the chamber (2) of liquid to push back the sealing valve.
  • an overpressure is created at the same time in the chamber (3) of air and in the chamber (2) of liquid, when the user exerts pressure for example on the means (61) of compression.
  • the diameter of the opening of the outlet (34) of the chamber (3) of air is, for example, sized relative to the outlet diameter (25) of the chamber (2) of liquid to achieve a mixture of air and foaming liquid product in a proportion determined.
  • the chamber (3) of air is disposed adjacent to the chamber (4) mixing, the outlet (34) of the chamber (3) of air opening directly into the mixing chamber (4), as shown in FIG. figure 2 .
  • the outlet (34) of the air chamber communicates with a duct (35) leading to the mixing chamber (4).
  • the bell-shaped return means (39) causes the piston (32) of the air chamber (3) and the tube (180) to rise upwards. linked to the sleeve of the bell.
  • a depression is then created in the chamber (2) of liquid, creating a flow (1000) of liquid suction from the tank (100) and pushing the check valve (22) provided at the inlet (103) of the chamber (2), as shown in figure 5 .
  • the non-return valve disposed at the inlet of the liquid chamber is, for example, a ball (22) bearing against a frustoconical wall (21) widening towards the ball and forming the edges of the opening (103). ) inlet of the chamber (2) of liquid.
  • Depression is also created in the air chamber and a current (3001) of incoming air pushes back the check valve (s) (36) of the air inlet (s) (33) of the air chamber.
  • the air chamber then fills with air from outside the foam producing device.
  • the communication between the air chamber and the mixing chamber is left free.
  • the air inlet (s) (33) of the air chamber (3) have in fact a cross section sufficient to supply the air chamber with a flow of air coming from the outside. Air can also pass through the orifice (5) and the mixing chamber (4) to enter the air chamber through the outlet (s) (34), although in practice this inflow of air is negligible.
  • a suction (3001) of air is created in the chamber (3) of air together with a suction (1000) of foaming liquid in the chamber (2) of liquid, as shown in FIG. figure 5 .
  • the expulsion of foaming liquid and air into the mixing chamber (4) allows stirring of the foaming liquid by the stirring element (42), as shown in FIG. figure 6 .
  • the foam produced by the stirring element (413) is directed into an expulsion conduit (6) to an expulsion port (5) of the foam, or as shown in FIG. figure 3 , the foam produced by the brewing element (42) exits directly through the orifice (5) expulsion.
  • the sealing valve at the outlet of the chamber (2) of liquid, prevents leakage in case of overturning.
  • this sealing valve makes it possible to keep the foaming liquid safe from the air, certain product requiring to be kept out of the air.
  • the expulsion orifice (5) is arranged against the stirring element (42), as shown in FIG. figure 3 to avoid storing foam in an expulsion duct (6) or to rinse the mixing chamber (4) after use.
  • foaming liquid When the foam-producing device is activated, foaming liquid will always be present at the inlet (103) of the liquid chamber (2), regardless of the inclination of the foam-producing device.
  • the reservoir of course provides foaming liquid in all positions, as long as the reservoir (100) is not emptied.
  • the sealing valve plugging the outlet opening (25) of the liquid chamber, prevents the defusing of the chamber (2) of liquid in case of reversal.
  • the overpressure in the liquid chamber allows the expulsion (200) of foaming liquid in the chamber (4) of mixing, the elastic element (415) of the sealing valve then bringing the latter into its closed position, even if the user keeps the head of the foam production device in the depressed position.
  • the bell-shaped return means (39) may be made of an elastic material, including, for example, plastic or rubber.
  • the domed part of the bell is flexible and deformable and tends naturally to a raised position in which the interior volume of the bell is maximum.
  • the bell acts as a means of return and hermetic separation between the chamber (2) of liquid and the chamber (3) of air.
  • the smooth bell wall shape provides an effective biasing means and increased durability in contrast to a biasing means including folds such as accordion return means. Indeed, a very frequent use of the device can weaken the biasing means at the folds where the wall of the return means is weakened.

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  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Description

L'invention concerne le domaine des dispositifs de production de mousse actionnés manuellement, fonctionnant à base de liquide moussant et rechargeable. Elle concerne plus particulièrement un dispositif utilisable dans toutes les positions, debout, couché ou retourné, pour produire de la mousse.The invention relates to the field of manually operated foam producing devices operating on the basis of foaming and refillable liquid. It relates more particularly to a device that can be used in all positions, standing, lying down or turned over, to produce foam.

Il existe des dispositifs de production de mousse actionnés à la main permettant de produire de la mousse à partir de liquide moussant. La demande de brevet WO 2004/078359 et le brevet EP 1 190 775 décrivent, par exemple, un type de dispositif manuel produisant de la mousse à partir d'un liquide moussant. Cependant ce type de dispositif de production de mousse ne fonctionne pas correctement dans toutes les positions. Ce type de dispositif ne peut pas produire de la mousse, par exemple, lorsque le dispositif est retourné ou que ce dispositif est incliné à l'horizontale et que son réservoir est vidé à plus de la moitié.There are hand-operated foam producing devices for producing foam from foaming liquid. The patent application WO 2004/078359 and the patent EP 1 190 775 describe, for example, a type of manual device producing foam from a foaming liquid. However this type of foam producing device does not work properly in all positions. This type of device can not produce foam, for example, when the device is returned or that device is tilted horizontally and that its tank is emptied more than half.

Le document FR 2 907 035 résout ce problème par un dispositif de production de mousse comprenant un réservoir d'alimentation en liquide moussant, de capacité variable, une chambre de liquide communicant avec le réservoir d'alimentation en liquide moussant par une ouverture d'entrée, et avec une chambre de mélange par une ouverture de sortie du liquide, un premier clapet anti-retour disposé à l'ouverture d'entrée de la chambre de liquide, un second clapet anti-retour d'étanchéité, disposé à l'ouverture de sortie du liquide, autorisant un flux sortant de la chambre de liquide et comprenant des moyens élastiques de maintien en position fermée, une chambre d'air comprenant au moins une entrée avec un troisième clapet anti-retour permettant l'alimentation en air provenant de l'extérieur et une ouverture sortie de l'air communicant avec la chambre de mélange, des moyens de préhension pour un utilisateur, pour comprimer la chambre d'air et la chambre de liquide pour chasser du liquide et de l'air, par l'ouverture de sortie du liquide et par l'ouverture de sortie de l'air, dans la chambre de mélange qui comprend des moyens de brassage pour produire de la mousse expulsée vers un orifice de sortie, un ressort de rappel ramenant la chambre d'air et la chambre de liquide dans leur position non compressée pour réaliser une aspiration d'air et de liquide. Mais, ce système possède l'inconvénient d'être complexe de par une combinaison de deux pistons. Le piston de la chambre de liquide doit être hermétique pour ne pas communiquer avec la chambre d'air. Mais, il est bien connu qu'une utilisation très fréquente d'un piston peut rendre un piston de moins en moins hermétique. Les documents JP2007137497A et WO2010/131042A1 décrivent autres dispositifs de production de mousse de l'art antérieur.The document FR 2 907 035 solves this problem by a foam production device comprising a foaming liquid supply tank, of variable capacity, a liquid chamber communicating with the foaming liquid supply tank through an inlet opening, and with a chamber of mixing by an outlet opening of the liquid, a first non-return valve disposed at the inlet opening of the liquid chamber, a second non-return valve, arranged at the liquid outlet opening, allowing a flow leaving the liquid chamber and comprising elastic means for holding in the closed position, an air chamber comprising at least one inlet with a third non-return valve allowing the supply of air coming from the outside and an opening air outlet communicating with the mixing chamber, gripping means for a user, for compressing the air chamber and the liquid chamber to expel liquid and air. r, through the liquid outlet opening and through the air outlet opening, into the mixing chamber which includes brewing means for producing foam expelled to an outlet, a return spring returning the air chamber and the liquid chamber in their uncompressed position to achieve suction of air and liquid. But, this system has the disadvantage of being complex by a combination of two pistons. The plunger of the liquid chamber must be sealed to avoid contact with the air chamber. But, it is well known that a very frequent use of a piston can make a piston less and less hermetic. The documents JP2007137497A and WO2010 / 131042A1 disclose other foam producing devices of the prior art.

La présente invention a pour but de remédier à un ou plusieurs des inconvénients de l'art antérieur en proposant un dispositif de production de mousse rechargeable, actionné à la main et fonctionnant dans toutes les positions, de conception simple et sûre.The present invention aims to remedy one or more of the disadvantages of the prior art by providing a rechargeable foam production device, operated by hand and operating in all positions, simple and safe design.

Cet objectif est atteint par un dispositif de production de mousse selon la revendication 1.This object is achieved by a foam producing device according to claim 1.

Selon une autre particularité, la chambre d'air comprend en outre au moins une entrée avec un troisième clapet anti-retour permettant l'alimentation en air provenant de l'extérieur et une ouverture sortie de l'air communicant avec la chambre de mélange.According to another feature, the air chamber further comprises at least one inlet with a third non-return valve for supplying air from outside and an air outlet opening communicating with the mixing chamber.

Selon une autre particularité, le second clapet anti-retour d'étanchéité comprend un bossage plastique venant boucher l'ouverture de sortie du liquide, le bossage étant maintenu par des pattes élastiques fixées à la chambre de mélange, les moyens de brassage comprenant un filet ou un élément poreux disposé en aval de l'ouverture de sortie du liquide et de l'ouverture de sortie de l'air, par rapport à un écoulement vers l'orifice d'expulsion.According to another feature, the second non-return sealing valve comprises a plastic boss that closes the outlet opening of the liquid, the boss being held by elastic tabs fixed to the mixing chamber, the stirring means comprising a thread or a porous element disposed downstream of the liquid outlet opening and the air outlet opening, with respect to a flow towards the expulsion port.

Selon une autre particularité, le second clapet anti-retour d'étanchéité comprend une bille poussée contre une paroi tronconique s'élargissant vers la bille et réalisant les bords de la sortie de la chambre de liquide, la bille étant poussée par un élément élastique en appui contre au moins une butée d'appui de la chambre de mélange.According to another feature, the second non-return sealing valve comprises a ball pushed against a frustoconical wall widening towards the ball and realizing the edges of the outlet of the liquid chamber, the ball being pushed by an elastic element in bearing against at least one bearing abutment of the mixing chamber.

Selon une autre particularité, l'élément élastique est réalisé par un ressort, les moyens de brassage comprenant un filet ou un élément poreux disposé en aval de l'ouverture de sortie de l'air et de l'ouverture de sortie du liquide, par rapport à un écoulement vers l'orifice d'expulsion.According to another feature, the elastic element is made by a spring, the stirring means comprising a net or a porous element disposed downstream of the air outlet opening and the liquid outlet opening, by relative to a flow towards the expulsion orifice.

Selon une autre particularité, l'élément élastique est réalisé par une pièce de mousse poreuse élastique disposée en aval de l'ouverture de sortie de l'air, par rapport à un écoulement vers l'orifice d'expulsion pour réaliser le brassage d'air et de liquide moussant.According to another feature, the elastic element is formed by a piece of elastic porous foam disposed downstream of the air outlet opening, with respect to a flow towards the expulsion orifice to achieve the stirring of air and foaming liquid.

Selon une autre particularité, le clapet anti-retour d'étanchéité comprend une partie déformable pour assurer une fermeture étanche de l'ouverture de sortie du liquide.According to another feature, the sealing check valve comprises a deformable portion to ensure a tight closure of the liquid outlet opening.

Selon une autre particularité, la chambre d'air comprend deux parois cylindriques centrées autour d'un même axe et se rejoignant par le fond de la chambre d'air, un piston, dans lequel sont réalisées l'entrée permettant l'alimentation en air et l'ouverture de sortie de l'air, fermant la chambre d'air et coulissant selon l'axe de la chambre d'air, le piston de la chambre d'air étant poussé vers le fond de la chambre d'air par l'action de l'utilisateur sur une partie saillante du piston ou le piston étant éloigné du fond de la chambre par l'action du moyen de rappel, le moyen de rappel étant disposé dans la chambre d'air, en appui sur le fond au niveau de la base de la cloche.According to another feature, the air chamber comprises two cylindrical walls centered around the same axis and joining by the bottom of the air chamber, a piston, in which are formed the inlet for the air supply and the air outlet opening, closing the air chamber and sliding along the axis of the air chamber, the piston of the air chamber being pushed towards the bottom of the air chamber by the action of the user on a protruding portion of the piston or the piston being remote from the bottom of the chamber by the action of the return means, the biasing means being arranged in the air chamber, resting on the bottom at the base of the bell.

Selon une autre particularité, la chambre de liquide est disposée au centre de la chambre d'air, la chambre de liquide correspondant à l'espace sous la cloche du moyen de rappel en forme de cloche de même axe que la chambre d'air et au sommet de laquelle est réalisée l'ouverture de sortie du liquide, l'ouverture d'entrée de la chambre de liquide étant réalisée à la base de la cloche.According to another feature, the liquid chamber is disposed in the center of the air chamber, the liquid chamber corresponding to the space under the bell of the bell-shaped return means of the same axis as the air chamber and at the top of which is made the liquid outlet opening, the inlet opening of the liquid chamber being made at the base of the bell.

Selon une autre particularité, la chambre d'air comprend une pluralité d'entrées d'air, disposées en périphérie de la chambre d'air, et devant lesquelles un clapet à membrane est maintenu par des bras de soutien, dans la chambre d'air.According to another feature, the air chamber comprises a plurality of air inlets, disposed at the periphery of the air chamber, and in front of which a diaphragm valve is held by supporting arms, in the chamber of air air.

Selon une autre particularité, la chambre de mélange est adjacente à la chambre de liquide, un conduit d'air joignant la sortie de la chambre (3) d'air à la chambre de mélange, l'orifice d'expulsion étant disposé immédiatement en sortie des moyens de brassage.According to another feature, the mixing chamber is adjacent to the liquid chamber, an air duct joining the outlet of the air chamber (3) to the mixing chamber, the expulsion orifice being disposed immediately in output of the brewing means.

Selon une autre particularité, les moyens d'étanchéité comprennent une lèvre formée à la périphérie de plus grand diamètre de la cloche pour appuyer contre une paroi de la chambre autour de l'entrée de liquide.In another feature, the sealing means comprises a lip formed at the periphery of larger diameter of the bell to press against a wall of the chamber around the liquid inlet.

Selon une autre particularité, la cloche comprend un anneau rigide périphérique lié à la lèvre et en appui contre les parois latérales de la chambre d'air.According to another feature, the bell comprises a rigid peripheral ring connected to the lip and bearing against the side walls of the air chamber.

Selon une autre particularité, les moyens d'étanchéité comprennent une lèvre formée à la périphérie du plus grand diamètre de la cloche pour s'encastrer dans une gorge annulaire formée sur une paroi autour de l'entrée de liquide.According to another feature, the sealing means comprise a lip formed at the periphery of the largest diameter of the bell to fit into an annular groove formed on a wall around the liquid inlet.

Selon une autre particularité, la cloche comprend un anneau rigide périphérique lié à la lèvre et en appui contre la paroi autour de l'entrée de liquide.According to another feature, the bell comprises a rigid peripheral ring connected to the lip and bearing against the wall around the liquid inlet.

Selon une autre particularité, les moyens de compression comprennent un tube lié mécaniquement et de façon étanche à un manchon prolongeant la section la plus faible de la cloche, les moyens d'étanchéité comprenant un encastrement du tube avec une partie tubulaire de la cloche moins élastique que le reste de la cloche.According to another feature, the compression means comprise a tube mechanically and sealingly connected to a sleeve extending the weakest section of the bell, the sealing means comprising a fitting of the tube with a tubular portion of the bell less elastic than the rest of the bell.

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 coupe d'un exemple de dispositif de production de mousse selon l'invention;
  • les figures 2 et 3 représentent chacune un détail en coupe d'un dispositif de production de mousse selon l'invention ;
  • la figure 4 représente une vue en perspective d'un clapet d'étanchéité utilisé dans un dispositif de production de mousse selon l'invention ;
  • les figures 5 et 6 représentent une vue en coupe partielle d'un exemple de dispositif de production de mousse selon l'invention en phase de fonctionnement ;
  • la figure 7 représente une vue de coupe d'un autre exemple de dispositif de production de mousse.
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 represents a sectional view of an example of a device for producing foam according to the invention;
  • the figures 2 and 3 each represent a sectional detail of a foam production device according to the invention;
  • the figure 4 is a perspective view of a seal valve used in a foam producing device according to the invention;
  • the Figures 5 and 6 represent a partial sectional view of an example of a device for producing foam according to the invention in the operating phase;
  • the figure 7 is a sectional view of another example of a foam producing device.

L'invention va être décrite en référence aux figures précédemment citées. Le dispositif de production de mousse, comme représenté aux figures 1 et 7, comprend un réservoir (100) contenant du liquide moussant. Le réservoir (100) est réalisé, par exemple, à l'intérieur d'un cylindre (101). De manière non limitative, la paroi intérieure du cylindre (101) est de section transversale ronde ou ovale. Un piston (102) de même section transversale est mobile dans le cylindre (101) et s'appuie sur la paroi intérieure du cylindre (101) de façon étanche. Le réservoir comprend une ouverture (103), de manière non limitative, en vis-à-vis du piston (102), par laquelle le liquide sort du réservoir (100). La sortie de liquide par l'ouverture (103) entraîne une translation du piston (102) et une diminution du volume du réservoir (100). Le piston (102) mobile délimitant en partie le réservoir (100), permet d'avoir une contenance adaptable du réservoir (100), la contenance étant identique au volume de liquide moussant contenu. Plus le liquide moussant est aspiré par l'ouverture (103), plus le piston (102) se rapproche du fond du cylindre pour diminuer la contenance du réservoir (100). Le brevet US 5,152,434 décrit par exemple une pompe non adaptée à la production de mousse, équipée d'un réservoir de ce type. De manière non limitative, le piston (102) comprend sur une face à l'opposé du réservoir, une attache (104) accessible depuis l'extérieur du dispositif de production de mousse, pour saisir le piston (102) lors d'un démontage pour remplir le réservoir (100).The invention will be described with reference to the figures mentioned above. The foam producing device, as shown in figures 1 and 7 , comprises a reservoir (100) containing foaming liquid. The reservoir (100) is made, for example, inside a cylinder (101). Without limitation, the inner wall of the cylinder (101) is of round or oval cross section. A piston (102) of the same cross section is movable in the cylinder (101) and rests on the inner wall of the cylinder (101) sealingly. The reservoir comprises an opening (103), in a nonlimiting manner, vis-à-vis the piston (102), through which the liquid exits the reservoir (100). The liquid outlet through the opening (103) causes a translation of the piston (102) and a decrease in the volume of the reservoir (100). The piston (102) movable partially delimiting the reservoir (100) allows to have an adaptable capacity of the reservoir (100), the capacity being identical to the volume of foaming liquid contained. The more the foaming liquid is sucked through the opening (103), the more the piston (102) approaches the bottom of the cylinder to reduce the capacity of the reservoir (100). The patent US 5,152,434 describes for example a pump not suitable for the production of foam, equipped with a reservoir of this type. Without limitation, the piston (102) comprises on a face opposite the tank, a fastener (104) accessible from the outside of the foam producing device, for gripping the piston (102) during disassembly to fill the tank (100).

Le flux de fluide passant par l'ouverture (103) du réservoir (100) étant réalisé dans le sens sortant du réservoir (100), le réservoir (100), rempli au départ entièrement par un liquide moussant déterminé, ne contient que ce liquide. Le réservoir ne contient, par exemple, pas d'air. De plus l'ouverture du réservoir (100) est toujours alimentée en liquide moussant jusqu'à ce que le réservoir (100) ait atteint sa capacité minimum, quand le piston (102) avance jusqu'à une position de butée, par exemple contre l'ouverture (103). Lorsque le piston (102) est en position de butée, le piston (102) est sensiblement en contact avec la paroi du réservoir où se situe l'ouverture (103).As the flow of fluid passing through the opening (103) of the tank (100) is made in the direction out of the tank (100), the tank (100), initially completely filled with a determined foaming liquid, contains only this liquid . The tank does not contain, for example, no air. In addition, the opening of the reservoir (100) is always fed with foaming liquid until the reservoir (100) has reached its minimum capacity, when the piston (102) advances to an abutment position, for example against the opening (103). When the piston (102) is in the stop position, the piston (102) is substantially in contact with the wall of the tank where the opening (103) is located.

Une chambre (2) de liquide avec une ouverture d'entrée (103) et une ouverture de sortie (25), communique par son ouverture d'entrée (103) avec le réservoir et communique par son ouverture de sortie (25) avec une chambre (4) de mélange. L'ouverture d'entrée (103) de la chambre (2) de liquide coïncide avec l'ouverture du réservoir.A liquid chamber (2) with an inlet opening (103) and an outlet opening (25) communicates through its inlet opening (103) with the reservoir and communicates through its outlet opening (25) with a mixing chamber (4). The inlet opening (103) of the chamber (2) of liquid coincides with the opening of the reservoir.

Un premier clapet (21, 22) anti-retour disposé à l'entrée (103) de la chambre (2) de liquide empêche une circulation du liquide retournant dans le réservoir (100).A first nonreturn valve (21, 22) disposed at the inlet (103) of the chamber (2) of liquid prevents a flow of liquid returning to the reservoir (100).

Un second clapet (411, 412) anti-retour d'étanchéité disposé à l'ouverture de sortie (25) du liquide autorise un flux sortant de la chambre (2) de liquide et comprend des moyens (415, 413 ; 417) élastiques de maintien en position fermée.A second non-return valve (411, 412) disposed at the outlet opening (25) of the liquid allows a flow out of the chamber (2) of liquid and comprises means (415, 413; 417) resilient holding in the closed position.

Le second clapet (411, 412) anti-retour d'étanchéité, comme représenté aux figures 1, 2, 5, 6 et 7, est réalisé, de manière non limitative, par une bille (412) poussée par un élément (413, 415) élastique, contre une paroi (411) tronconique s'élargissant vers la bille (412). La bille (412) est par exemple réalisée en plastique ou en verre, la paroi (411) étant, par exemple réalisée en plastique. De manière non limitative, la paroi (411) tronconique a une dureté déterminée pour se déformer au contact de la bille (412).The second nonreturn valve (411, 412), as shown in FIGS. figures 1 , 2 , 5, 6 and 7 , is made, without limitation, by a ball (412) pushed by a member (413, 415) elastic against a frustoconical wall (411) widening towards the ball (412). The ball (412) is for example made of plastic or glass, the wall (411) being, for example made of plastic. In a nonlimiting manner, the frustoconical wall (411) has a hardness determined to deform in contact with the ball (412).

L'élément (413, 415) élastique est par exemple en appui contre une bague (414) d'appui fixe par rapport à la chambre (4) de mélange. L'élément élastique est réalisé, de manière non limitative, par une mousse (413) poreuse élastique exerçant une force de maintien de la bille (412) contre la paroi tronconique comme représenté sur la figure 2. La mousse (413) poreuse réalise aussi un brassage du liquide avec l'air pour produire de la mousse.The element (413, 415) elastic is for example in abutment against a ring (414) fixed support relative to the chamber (4) mixing. The elastic element is produced, in a nonlimiting manner, by an elastic porous foam (413) exerting a force for holding the ball (412) against the frustoconical wall as shown in FIG. figure 2 . The porous foam (413) also mixes the liquid with the air to produce foam.

Selon un autre exemple de réalisation, comme représenté aux figure 1, 5, 6 et 7, l'élément élastique est un ressort (415) en appui sur la bague (414) d'appui et contre la bille (412), un filet (42) ou une mousse poreuse pouvant être disposé en aval de la bague (414), par rapport au sens (5000) d'expulsion, pour brasser le liquide moussant avec l'air et produire de la mousse (51). Le ressort (415) est par exemple en métal ou en plastique.According to another embodiment, as shown in figure 1 , 5 , 6 and 7 , the elastic element is a spring (415) bearing on the bearing ring (414) and against the ball (412), a thread (42) or a porous foam that can be arranged downstream of the ring (414) , relative to the expulsion direction (5000), for stirring the foaming liquid with air and producing foam (51). The spring (415) is for example metal or plastic.

Selon un autre exemple de réalisation, comme représenté à la figure 3, le clapet d'étanchéité comprend un bossage (416) maintenu en appui contre la sortie (25) de la chambre (2) de liquide, par des bras (417) élastiques. Ce clapet (416, 417) représenté en perspective à la figure 4, est par exemple maintenu par ses bras (417) pincés à leur extrémité, par des moyens de pincement du dispositif de production de mousse. De manière non limitative, le bossage (416) est élastique pour boucher l'ouverture de sortie (25) de la chambre (2) de liquide en se déformant lors de son insertion dans l'ouverture de sortie (25).According to another embodiment, as shown in FIG. figure 3 , the sealing valve comprises a boss (416) held in abutment against the outlet (25) of the chamber (2) of liquid, by arms (417) elastic. This valve (416, 417) shown in perspective at the figure 4 is, for example, held by its arms (417) pinched at their end, by pinching means of the foam producing device. In a nonlimiting manner, the boss (416) is elastic to plug the outlet opening (25) of the chamber (2) of liquid by deforming when inserted into the outlet opening (25).

Une chambre (3) d'air est par exemple réalisée autour de la chambre (2) de liquide, comme représenté aux figures 1 et 7. La chambre (3) d'air est réalisée par un cylindre (31) dans lequel coulisse de façon étanche un piston (32). Le cylindre (31) de la chambre (3) d'air est, par exemple, disposé de façon coaxiale et autour du cylindre (23) de la chambre de liquide. La chambre d'air peut comprendre au moins une entrée (33) avec un troisième clapet anti-retour permettant l'alimentation en air provenant de l'extérieur du dispositif et une ouverture (34) de sortie de l'air communicant avec la chambre (4) de mélange.A chamber (3) of air is for example made around the chamber (2) of liquid, as shown in FIGS. figures 1 and 7 . The air chamber (3) is formed by a cylinder (31) in which a piston (32) slides in a sealed manner. The cylinder (31) of the air chamber (3) is, for example, arranged coaxially and around the cylinder (23) of the liquid chamber. The air chamber may include at least one inlet (33) with a third non-return valve for supplying air from outside the device and an air outlet opening (34) communicating with the chamber (4) mixing.

Un moyen (39) de rappel ramène la chambre (3) d'air et la chambre (2) de liquide dans leur position non compressée pour réaliser une aspiration d'air et de liquide.A return means (39) returns the air chamber (3) and the liquid chamber (2) to their uncompressed position for suction of air and liquid.

Le moyen (39) de rappel est une pièce élastique et déformable en forme de cloche à parois lisses qui sépare la chambre (2) de liquide et la chambre (3) d'air de façon hermétique par des moyens d'étanchéité. Par exemple, le moyen (39) de rappel est une pièce élastique et déformable en forme de cloche hémisphérique ou tronconique.The return means (39) is a resilient, smooth-walled, bell-shaped, resilient piece which separates the liquid chamber (2) and the air chamber (3) hermetically by sealing means. For example, the biasing means (39) is a resilient and deformable piece in the form of a hemispherical or frustoconical bell.

La chambre (2) de liquide correspond à l'espace sous le moyen (39) de rappel en forme de cloche de même axe principal que la chambre (3) d'air. Au sommet de la cloche est réalisée l'ouverture (25) de sortie du liquide. L'ouverture (103) d'entrée de la chambre (2) de liquide est réalisée sur une surface (394) à la base de la cloche.The chamber (2) of liquid corresponds to the space under the means (39) of bell-shaped return of the same main axis as the chamber (3) of air. At the top of the bell is made the opening (25) of the liquid outlet. The inlet opening (103) of the liquid chamber (2) is formed on a surface (394) at the base of the bell.

Des moyens (61) de compression permettent de comprimer la chambre (3) d'air et la chambre (2) de liquide pour chasser du liquide et de l'air, par l'ouverture (25) de sortie du liquide et par l'ouverture (34) de sortie de l'air, dans la chambre (4) de mélange. La chambre (4) de mélange peut comprendre des moyens (42) de brassage pour produire de la mousse (51) expulsée vers un orifice (5) de sortie.Compression means (61) are provided for compressing the air chamber (3) and the liquid chamber (2) to expel liquid and air through the liquid outlet opening (25) and the air outlet. air outlet opening (34) in the mixing chamber (4). The mixing chamber (4) can comprising brewing means (42) for producing foam (51) expelled to an outlet (5).

Les moyens (61) de compression comprennent un tube (180) lié mécaniquement et de façon étanche à un manchon prolongeant la section la plus faible de la cloche. Les moyens (392) d'étanchéité comprennent un encastrement du tube (180) avec une partie (395) tubulaire de la cloche. La partie (395) peut être moins élastique que le reste de la cloche. Cette différence d'élasticité peut, par exemple, être réalisée par une épaisseur plus importante de la paroi de la partie (395) tubulaire par rapport à l'épaisseur du reste de la cloche ou par une autre matière plus rigide de la partie (395) tubulaire fixée hermétiquement au reste de la cloche.The compression means (61) comprise a tube (180) mechanically and sealingly connected to a sleeve extending the weakest section of the bell. The sealing means (392) comprise a recess of the tube (180) with a tubular portion (395) of the bell. The portion (395) may be less resilient than the rest of the bell. This difference in elasticity may, for example, be achieved by a greater thickness of the wall of the tubular portion (395) relative to the thickness of the remainder of the bell or by some other more rigid material of the part (395). ) tubularly attached to the rest of the bell.

La base de la cloche comprend également des moyens (391) d'étanchéité pour séparer hermétiquement la chambre (2) de liquide de la chambre (3) d'air.The base of the bell also includes sealing means (391) for sealing the chamber (2) of liquid from the air chamber (3).

Dans un exemple représenté figure 1, les moyens (391) d'étanchéité comprennent une lèvre (391) formée à la périphérie de plus grand diamètre de la cloche pour appuyer contre une paroi de la chambre autour de l'entrée de liquide (103). La cloche peut comprendre en outre un anneau (393) rigide périphérique lié à la lèvre (391) et en appui contre les parois latérales de la chambre (3) d'air.In an example shown figure 1 the sealing means (391) comprises a lip (391) formed at the larger diameter periphery of the bell for pressing against a wall of the chamber around the liquid inlet (103). The bell may further comprise a peripheral rigid ring (393) connected to the lip (391) and resting against the side walls of the air chamber (3).

Dans un exemple représenté figure 7, les moyens (391) d'étanchéité comprennent une lèvre (391) formée à la périphérie du plus grand diamètre de la cloche pour s'encastrer dans une gorge annulaire formée sur une paroi (394) autour de l'entrée de liquide (103) de façon que la chambre (2) de liquide et la chambre (3) d'air soient séparées hermétiquement. La cloche peut comprendre en outre un anneau (393) périphérique lié à la lèvre (391) et en appui contre la paroi (394) autour de l'entrée de liquide (103).In an example shown figure 7 , the sealing means (391) comprises a lip (391) formed at the periphery of the larger diameter of the bell to fit into an annular groove formed on a wall (394) around the liquid inlet (103). ) so that the chamber (2) of liquid and the chamber (3) of air are hermetically separated. The bell may further comprise a peripheral ring (393) connected to the lip (391) and resting against the wall (394) around the liquid inlet (103).

Le piston (32) de la chambre (3) d'air est lié aux moyens (61) de compression et au tube (180) lié mécaniquement et de façon étanche à au manchon prolongeant la section la plus faible de la cloche.The piston (32) of the air chamber (3) is connected to the compression means (61) and to the tube (180) mechanically and sealingly connected to the sleeve extending the weakest section of the bell.

Lorsque les moyens (61) de compression sont actionnés par un mouvement (M1) descendant. Le piston (32) de la chambre (3) d'air est poussé vers le fond du cylindre (31) de la chambre (3) d'air. Le volume de la chambre (3) d'air est réduit, l'air étant alors chassé de la chambre d'air. Une ou plusieurs entrées (33) d'air, associées à un clapet anti-retour, par exemple à membrane (36) soutenue par des bras (37), se bouchent alors automatiquement. Un flux d'air (3002) est expulsé de la chambre (3) d'air par la ou les sorties (34) de la chambre d'air vers la chambre (4) de mélange. Le piston (32) de la chambre (3) d'air étant lié au tube (180) lié mécaniquement et de façon étanche à au manchon de la cloche, la cloche du moyen (39) de rappel est déformée, une surpression à l'intérieur de la cloche est créée. Cette surpression crée un blocage du clapet (22) anti-retour pour boucher l'ouverture (103) d'entrée de la chambre de liquide. Un flux (2000) de liquide est alors expulsé par l'ouverture de sortie (25) de la chambre (2) de liquide, en repoussant le clapet disposé à la sortie (25) de la chambre (2) de liquide. Le liquide moussant est alors projeté dans la chambre (4) de mélange, comme représenté à la figure 6. Le clapet disposé en sortie de la chambre (2) de liquide comprend des moyens élastiques de maintien en position fermée, permettant de fermer de façon étanche l'ouverture de sortie (25) de la chambre (2) de liquide tant que la pression dans la chambre (2) de liquide est insuffisante pour que le liquide contenu dans la chambre (2) de liquide ne repousse le clapet d'étanchéité.When the compression means (61) are actuated by a descending movement (M1). The piston (32) of the chamber (3) of air is pushed towards the bottom of the cylinder (31) of the chamber (3) of air. The volume of the chamber (3) of air is reduced, the air then being removed from the air chamber. One or more air inlets (33), associated with a non-return valve, for example membrane (36) supported by arms (37), then clog automatically. A flow of air (3002) is expelled from the air chamber (3) through the outlet (s) (34) of the air chamber to the mixing chamber (4). The piston (32) of the chamber (3) of air being connected to the tube (180) mechanically connected and sealed to the sleeve of the bell, the bell of the means (39) of return is deformed, an overpressure to the inside the bell is created. This overpressure creates a blockage of the non-return valve (22) to plug the opening (103) of the inlet of the liquid chamber. A flow (2000) of liquid is then expelled through the outlet opening (25) of the chamber (2) of liquid, by pushing the valve disposed at the outlet (25) of the chamber (2) of liquid. The foaming liquid is then thrown into the mixing chamber (4), as shown in FIG. figure 6 . The valve disposed at the outlet of the chamber (2) of liquid comprises resilient means for holding in the closed position, for sealing the outlet opening (25) of the chamber (2) of liquid as long as the pressure in the the chamber (2) of liquid is insufficient for the liquid contained in the chamber (2) of liquid to push back the sealing valve.

Ainsi, une surpression est créée en même temps dans la chambre (3) d'air et dans la chambre (2) de liquide, lorsque l'utilisateur exerce une pression par exemple sur les moyens (61) de compression. Le diamètre de l'ouverture de la sortie (34) de la chambre (3) d'air est, par exemple, dimensionné par rapport au diamètre de sortie (25) de la chambre (2) de liquide pour réaliser un mélange d'air et de produit liquide moussant selon une proportion déterminée.Thus, an overpressure is created at the same time in the chamber (3) of air and in the chamber (2) of liquid, when the user exerts pressure for example on the means (61) of compression. The diameter of the opening of the outlet (34) of the chamber (3) of air is, for example, sized relative to the outlet diameter (25) of the chamber (2) of liquid to achieve a mixture of air and foaming liquid product in a proportion determined.

De manière non limitative, la chambre (3) d'air est disposée adjacente à la chambre (4) de mélange, la sortie (34) de la chambre (3) d'air débouchant directement dans la chambre (4) de mélange, comme représenté à la figure 2.Without limitation, the chamber (3) of air is disposed adjacent to the chamber (4) mixing, the outlet (34) of the chamber (3) of air opening directly into the mixing chamber (4), as shown in FIG. figure 2 .

Selon un autre exemple de réalisation, la sortie (34) de la chambre d'air communique avec un conduit (35) menant à la chambre (4) de mélange.According to another exemplary embodiment, the outlet (34) of the air chamber communicates with a duct (35) leading to the mixing chamber (4).

Lorsque les moyens (61) de compression ne sont pour actionnés ou sont relâchés, le moyen (39) de rappel en forme de cloche entraîne la remontée du piston (32) de la chambre (3) d'air et du tube (180) lié au manchon de la cloche. Une dépression se crée alors dans la chambre (2) de liquide, créant un flux (1000) d'aspiration de liquide provenant du réservoir (100) et repoussant le clapet (22) anti-retour disposé à l'entrée (103) de la chambre (2), comme représenté à la figure 5. Le clapet anti-retour disposé à l'entrée de la chambre de liquide est, par exemple, une bille (22) en appui contre une paroi (21) tronconique s'élargissant vers la bille et formant les bords de l'ouverture (103) d'entrée de la chambre (2) de liquide.When the compression means (61) are not actuated or released, the bell-shaped return means (39) causes the piston (32) of the air chamber (3) and the tube (180) to rise upwards. linked to the sleeve of the bell. A depression is then created in the chamber (2) of liquid, creating a flow (1000) of liquid suction from the tank (100) and pushing the check valve (22) provided at the inlet (103) of the chamber (2), as shown in figure 5 . The non-return valve disposed at the inlet of the liquid chamber is, for example, a ball (22) bearing against a frustoconical wall (21) widening towards the ball and forming the edges of the opening (103). ) inlet of the chamber (2) of liquid.

Une dépression est aussi créée dans la chambre d'air et un courant (3001) d'air entrant repousse le ou les clapets (36) anti-retour de la ou des entrées (33) d'air de la chambre d'air. La chambre d'air se remplit alors en air provenant de l'extérieur du dispositif de production de mousse.Depression is also created in the air chamber and a current (3001) of incoming air pushes back the check valve (s) (36) of the air inlet (s) (33) of the air chamber. The air chamber then fills with air from outside the foam producing device.

De manière non limitative, la communication entre la chambre d'air et la chambre de mélange est laissée libre. La ou les entrées d'air (33) de la chambre (3) d'air ont en effet une section transversale suffisante pour alimenter la chambre d'air par un flux d'air provenant de l'extérieur. De l'air peut aussi passer par l'orifice (5) et la chambre (4) de mélange pour rentrer dans la chambre d'air par la ou les sorties (34), même si en pratique ce flux d'air entrant est négligeable.In a nonlimiting manner, the communication between the air chamber and the mixing chamber is left free. The air inlet (s) (33) of the air chamber (3) have in fact a cross section sufficient to supply the air chamber with a flow of air coming from the outside. Air can also pass through the orifice (5) and the mixing chamber (4) to enter the air chamber through the outlet (s) (34), although in practice this inflow of air is negligible.

Une aspiration (3001) d'air est créée dans la chambre (3) d'air en même temps qu'une aspiration (1000) de liquide moussant dans la chambre (2) de liquide, comme représenté à la figure 5. L'expulsion de liquide moussant et d'air dans la chambre (4) de mélange permet un brassage du liquide moussant par l'élément (42) de brassage, comme représenté à la figure 6.A suction (3001) of air is created in the chamber (3) of air together with a suction (1000) of foaming liquid in the chamber (2) of liquid, as shown in FIG. figure 5 . The expulsion of foaming liquid and air into the mixing chamber (4) allows stirring of the foaming liquid by the stirring element (42), as shown in FIG. figure 6 .

De manière non limitative, comme représenté à la figure 2, la mousse produite par l'élément (413) de brassage est dirigée dans un conduit (6) d'expulsion jusqu'à un orifice (5) d'expulsion de la mousse, ou comme représenté à la figure 3, la mousse produite par l'élément (42) de brassage sort directement par l'orifice (5) d'expulsion.In a non-limiting way, as shown in FIG. figure 2 the foam produced by the stirring element (413) is directed into an expulsion conduit (6) to an expulsion port (5) of the foam, or as shown in FIG. figure 3 , the foam produced by the brewing element (42) exits directly through the orifice (5) expulsion.

Lorsque le dispositif de production de mousse n'est pas activé, le clapet d'étanchéité, à la sortie de la chambre (2) de liquide, empêche toute fuite en cas de retournement. De plus ce clapet d'étanchéité permet de maintenir le liquide moussant à l'abri de l'air, certain produit nécessitant d'être conservés à l'abri de l'air. De préférence pour des produits réagissant rapidement au contact de l'air, l'orifice (5) d'expulsion est disposé contre l'élément (42) de brassage, comme représenté à la figure 3, pour éviter de stocker de la mousse dans un conduit (6) d'expulsion ou pour pouvoir rincer la chambre (4) de mélange après utilisation.When the foam producing device is not activated, the sealing valve, at the outlet of the chamber (2) of liquid, prevents leakage in case of overturning. In addition, this sealing valve makes it possible to keep the foaming liquid safe from the air, certain product requiring to be kept out of the air. Preferably for products that react rapidly in contact with air, the expulsion orifice (5) is arranged against the stirring element (42), as shown in FIG. figure 3 to avoid storing foam in an expulsion duct (6) or to rinse the mixing chamber (4) after use.

Lorsque le dispositif de production de mousse est activé, du liquide moussant sera toujours présent à l'entrée (103) de la chambre (2) de liquide, quelque soit l'inclinaison du dispositif de production de mousse. Le réservoir fournit bien sûr du liquide moussant, dans toutes les positions, tant que le réservoir (100) n'est pas vidé. De plus le clapet d'étanchéité bouchant l'ouverture de sortie (25) de la chambre de liquide, empêche le désamorçage de la chambre (2) de liquide en cas de retournement. En effet si l'utilisateur exerce une pression pour comprimer la chambre de liquide et la chambre d'air, en position retournée, la surpression dans la chambre de liquide permet l'expulsion (200) de liquide moussant dans la chambre (4) de mélange, l'élément (415) élastique du clapet d'étanchéité ramenant ensuite ce dernier dans sa position fermée, même si l'utilisateur maintien la tête du dispositif de production de mousse en position enfoncée.When the foam-producing device is activated, foaming liquid will always be present at the inlet (103) of the liquid chamber (2), regardless of the inclination of the foam-producing device. The reservoir of course provides foaming liquid in all positions, as long as the reservoir (100) is not emptied. In addition the sealing valve plugging the outlet opening (25) of the liquid chamber, prevents the defusing of the chamber (2) of liquid in case of reversal. Indeed if the user exerts a pressure to compress the liquid chamber and the air chamber, in the inverted position, the overpressure in the liquid chamber allows the expulsion (200) of foaming liquid in the chamber (4) of mixing, the elastic element (415) of the sealing valve then bringing the latter into its closed position, even if the user keeps the head of the foam production device in the depressed position.

Le moyen (39) de rappel en forme de cloche peut être réalisé dans une matière élastique, comprenant, par exemple, du plastique ou du caoutchouc. La partie bombée de la cloche est souple et déformable et tend naturellement vers une position relevée dans laquelle le volume intérieur de la cloche est maximal.The bell-shaped return means (39) may be made of an elastic material, including, for example, plastic or rubber. The domed part of the bell is flexible and deformable and tends naturally to a raised position in which the interior volume of the bell is maximum.

La cloche joue le rôle de moyen de rappel et de séparation hermétique entre la chambre (2) de liquide et la chambre (3) d'air. La forme de paroi lisse de cloche permet d'avoir un moyen de rappel efficace et de durabilité accrue contrairement à un moyen de rappel comprenant des pliures, tels qu'un moyen de rappel en accordéon. En effet, une utilisation très fréquente du dispositif peut affaiblir le moyen de rappel au niveau des pliures où la paroi du moyen de rappel est affaiblie.The bell acts as a means of return and hermetic separation between the chamber (2) of liquid and the chamber (3) of air. The smooth bell wall shape provides an effective biasing means and increased durability in contrast to a biasing means including folds such as accordion return means. Indeed, a very frequent use of the device can weaken the biasing means at the folds where the wall of the return means is weakened.

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 (16)

  1. Device for the production of foam comprising:
    - a reservoir (100) for the supply of foaming liquid, of variable capacity,
    - a liquid chamber (2) communicating with the foaming liquid supply reservoir by an inlet opening (103), and with a mixing chamber (4) by a liquid outlet opening (25),
    - a first non-return valve (21, 22) disposed at the inlet opening (103) of the liquid chamber (2),
    - a second non-return sealing valve (411, 412; 416) disposed at the liquid outlet opening (25), enabling a flow leaving the liquid chamber (2) and comprising elastic means (415, 413; 417) for holding in the closed position,
    - an air chamber (3),
    - compression means (61) for compressing the air chamber (3) and the liquid chamber (2) in order to expel liquid and air, via the liquid outlet opening (25) and via the air outlet opening (34), into the mixing chamber (4) which comprises stirring means (42) for producing the foam (51) discharged towards an outlet orifice (5),
    - a return means (39) which returns the air chamber (3) and the liquid chamber (2) to their uncompressed position in order to produce suction of air and liquid, the return means (39) is a deformable elastic bell-shaped component with a smooth wall which separates the liquid chamber (2) and the air chamber (3) hermetically by sealing means (391, 392),
    characterised in that the liquid chamber (2) corresponds to the space under the bell-shaped return means (39), the liquid outlet opening (25) being formed at the top of the bell, the inlet opening (103) of the liquid chamber (2) being formed on a surface (394), at the base of the bell, separating the reservoir from at least the liquid chamber,
    and in that the foaming liquid supply reservoir of variable capacity comprises a movable piston (12) which slides in sealing fashion against an inner wall of the reservoir, the movable piston being disposed opposite the inlet opening (103) of the liquid chamber (2).
  2. Foam producing device according to claim 1, characterised in that the air chamber (3) further comprises at least one inlet (33) with a third non-return valve permitting the supply of air from the outside and an air outlet opening (34) communicating with the mixing chamber (4).
  3. Foam producing device according to claim 1, characterised in that the second non-return sealing valve comprises a plastic boss (416) which plugs the liquid outlet opening (25), the boss being held by elastic feet (417) fixed to the mixing chamber (4), the stirring means comprising a mesh (42) or porous element disposed downstream of the liquid outlet opening (25) and of the air outlet opening (34), in relation to flow towards the discharge orifice (5).
  4. Foam producing device according to claim 1, characterised in that the second non-return sealing valve comprises a ball (412) pushed against a frustoconical wall (411) widening towards the ball and forming the edges of the outlet (25) of the liquid chamber (2), the ball being pushed by an elastic element (415, 413) against at least one supporting stop (414) of the mixing chamber (4).
  5. Foam producing device according to claim 5, characterised in that the elastic element is formed by a spring (415), the stirring means comprising a mesh (42) or porous element disposed downstream of the air outlet opening (34) and of the liquid outlet opening (25), in relation to flow towards the discharge orifice (5).
  6. Foam producing device according to claim 4, characterised in that the elastic element is formed by a porous elastic foam component (413) disposed downstream of the air outlet opening (34), in relation to flow towards the discharge orifice (5), in order to carry out the stirring of air and foaming liquid.
  7. Foam producing device according to one of claims 1 to 6, characterised in that the non-return sealing valve comprises a deformable portion in order to ensure that the liquid outlet opening (25) is sealed shut.
  8. Foam producing device according to one of claims 1 to 7, characterised in that the air chamber (3) comprises two cylindrical walls centred around the same axis and joining at the bottom of the air chamber, a piston (32) in which are formed the inlet (33) allowing supply of air and the air outlet opening (34), closing the air chamber (3) and sliding along the axis of the air chamber, the piston (32) of the air chamber being pushed towards the bottom of the air chamber by the action of the user on a projecting portion (61) of the piston, or the piston being moved away from the bottom of the chamber by the action of the return means (39), the return means (39) being disposed in the air chamber, against the bottom at the level of the base of the bell.
  9. Foam producing device according to claim 8, characterised in that the liquid chamber (2) is disposed at the centre of the air chamber (3), the liquid chamber (2) corresponding to the space below the bell of the bell-shaped return means (39) having the same axis as the air chamber (3) and at the top of which is formed the liquid outlet opening (25), the inlet opening (103) of the liquid chamber (2) being formed at the base of the bell.
  10. Foam producing device according to one of claims 1 to 9, characterised in that the air chamber (3) comprises a plurality of air inlets (33), disposed at the periphery of the air chamber, and in front of which a diaphragm valve (36) is held by supporting arms (37), in the air chamber (3).
  11. Foam producing device according to one of claims 1 to 10, characterised in that the mixing chamber (4) is adjacent to the liquid chamber (2), an air conduit (35) connecting the outlet (34) of the air chamber (3) to the mixing chamber (4), the discharge orifice (5) being disposed immediately at the outlet of the stirring means (42).
  12. Foam producing device according to claim 1, characterised in that the sealing means (391) comprise a lip (391) formed at the periphery of larger diameter of the bell in order to bear on a wall (394) of the chamber around the liquid inlet (103).
  13. Foam producing device according to claim 14, characterised in that the bell comprises a rigid peripheral ring (393) connected to the lip (391) and bearing on the side walls of the air chamber (3).
  14. Foam producing device according to claim 1, characterised in that the sealing means comprise a lip (22) formed at the periphery of the largest diameter of the bell in order to be embedded in an annular groove formed in a wall (394) around the liquid inlet (103).
  15. Foam producing device according to claim 12, characterised in that the bell comprises a rigid peripheral ring (393) connected to the lip (391) and bearing on the wall (394) around the liquid inlet (103).
  16. Foam producing device according to claim 1, characterised in that the compression means (61) comprise a tube (180) connected mechanically and in sealing fashion to a sleeve which extends the smallest cross-section of the bell, the sealing means (392) comprising embedding of the tube (180) with a tubular portion (395) of the bell which is less elastic than the rest of the bell.
EP13752864.2A 2012-08-06 2013-08-06 Rechargable foam dispenser Active EP2879806B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1257623A FR2994109B1 (en) 2012-08-06 2012-08-06 DEVICE FOR PRODUCING RECHARGEABLE FOAM
PCT/EP2013/066511 WO2014023748A1 (en) 2012-08-06 2013-08-06 Refillable device for producing foam

Publications (2)

Publication Number Publication Date
EP2879806A1 EP2879806A1 (en) 2015-06-10
EP2879806B1 true EP2879806B1 (en) 2019-09-18

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EP13177601.5A Withdrawn EP2695677A1 (en) 2012-08-06 2013-07-23 Rechargable foam dispenser
EP13752864.2A Active EP2879806B1 (en) 2012-08-06 2013-08-06 Rechargable foam dispenser

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EP13177601.5A Withdrawn EP2695677A1 (en) 2012-08-06 2013-07-23 Rechargable foam dispenser

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EP (2) EP2695677A1 (en)
FR (1) FR2994109B1 (en)
WO (1) WO2014023748A1 (en)

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Publication number Priority date Publication date Assignee Title
FR3068265B1 (en) * 2017-06-28 2022-02-25 Gb Dev FLUID DISPENSER BY PRESSURE ON A DEFORMABLE WALL OF THE CONTAINER
WO2019002517A1 (en) * 2017-06-28 2019-01-03 Gb Developpement Device for dispensing a fluid, cartridge for a device, manufacturing method and priming method
FR3100994B1 (en) * 2019-09-23 2021-09-17 Albea Services Foam distribution system for a dispenser with simplified air metering chamber, and associated foam dispenser
CN112618930A (en) * 2020-11-30 2021-04-09 瑞芙(杭州)医疗科技有限公司 Air push tube for female vagina sterilization

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Publication number Priority date Publication date Assignee Title
DE3928524C2 (en) 1989-08-29 1994-02-24 Megaplast Dosiersysteme donor
US6612468B2 (en) 2000-09-15 2003-09-02 Rieke Corporation Dispenser pumps
NL1022841C2 (en) 2003-03-04 2004-09-07 Airspray Nv Dispensing device.
JP2007137497A (en) * 2005-11-21 2007-06-07 Canyon Corp Foam discharging type pump dispenser
FR2907035B1 (en) 2006-10-12 2010-08-27 Gerard Sannier DEVICE FOR PRODUCING REVERSIBLE AND RECHARGEABLE FOAM
WO2009050449A1 (en) * 2007-10-16 2009-04-23 Leafgreen Limited A manual pump dispenser
WO2010131042A1 (en) * 2009-05-14 2010-11-18 Leafgreen Limited A precompression valve and fluid device comprising such a valve

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WO2014023748A1 (en) 2014-02-13
EP2879806A1 (en) 2015-06-10
FR2994109A1 (en) 2014-02-07
EP2695677A1 (en) 2014-02-12
FR2994109B1 (en) 2014-09-05

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