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EP2859956B1 - Device for producing foam cream - Google Patents

Device for producing foam cream Download PDF

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Publication number
EP2859956B1
EP2859956B1 EP14193209.5A EP14193209A EP2859956B1 EP 2859956 B1 EP2859956 B1 EP 2859956B1 EP 14193209 A EP14193209 A EP 14193209A EP 2859956 B1 EP2859956 B1 EP 2859956B1
Authority
EP
European Patent Office
Prior art keywords
foam
mixing chamber
reserve
liquid
reservoir
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14193209.5A
Other languages
German (de)
French (fr)
Other versions
EP2859956A1 (en
Inventor
Francis Poizot (Deceased)
Gérard Sannier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chaussard Chantal
Original Assignee
Chaussard Chantal
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chaussard Chantal filed Critical Chaussard Chantal
Publication of EP2859956A1 publication Critical patent/EP2859956A1/en
Application granted granted Critical
Publication of EP2859956B1 publication Critical patent/EP2859956B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B7/005—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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1032—Pumps having a pumping chamber with a deformable wall actuated without substantial movement of the nozzle in the direction of the pressure stroke
    • 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
    • B05B11/1066—Pump inlet valves
    • B05B11/1071—Two inlet valves being placed in a supply conduit one upstream of the other
    • 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
    • B05B11/01—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
    • B05B11/1098—Air being permanently entrapped or sucked into the liquid pump chamber
    • 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
    • B05B11/1001—Piston pumps

Definitions

  • the present invention relates to the field of foam production devices by hand pumps operating with a non-deformable container containing a mixture of foaming liquid.
  • the present invention relates more particularly to a device for producing foam cream.
  • the problem is that the air inlet of the device is placed away from the tank neck downwards. Indeed, if the liquid tank to be foamed is completely filled, the air inlet may be immersed in the liquid preventing air from entering the device. Therefore, when filling the tank, remember to leave a sufficient volume of air so that the air inlet is not in contact with the foaming liquid and can perform its function. This has the disadvantage of not being able to fill the tank with liquid completely and therefore to be obliged to provide a tank larger than the volume of liquid.
  • US patents US 4,147,306 and US 4,156,505 have deformable reservoir foam producing apparatus in which the foam is produced when the reservoir is deformed by compression.
  • the mixing chamber is above the opening of the tank and the air inlet is made by means of holes at the end of the tank.
  • this solution does not allow to incorporate the device inside the tank. Indeed, when the device is large, the air inlet is immersed in the liquid, preventing air from entering the device. This solution therefore makes it necessary to leave the foam production device outside the tank which leads to a device high enough and therefore not very aesthetic or with a tank of small capacity if we want to keep an acceptable size for the device.
  • the US patent application US 204/060945 has a foam dispenser comprising a deformable reservoir, a housing, and a movable chamber within the housing.
  • a deformable annular member is compressed or released by the movable chamber allowing air to flow from the outside of the reservoir inwardly or to flow from the interior of the reservoir to the inside of the chamber through the free space between the moving chamber and the housing of greater diameter.
  • this solution can not be applied to the foam dispenser having a non-deformable reservoir. Indeed, the pressure exerted by the pumping means is much lower than when a user presses a deformable reservoir. The pumping means would not allow to compress the annular piece. The air would not enter the room and only the liquid would be pumped.
  • Another solution proposed by the prior art consists of a tank with a neck having the same height as the body of the foam producing device. As a result, the air inlet is not immersed in the liquid to be lathered.
  • a disadvantage of this solution is a tank having a neck high enough and therefore not very aesthetic.
  • the object of the present invention is to overcome certain disadvantages of the prior art by proposing a device for producing foam cream that does not require leaving a large volume of air in the tank and thus making it possible to fill the tank almost completely.
  • a foam cream production device as claimed.
  • the device is adapted to be mounted on a rigid reservoir of liquid to be foamed comprising a liquid supply duct, a mixing chamber, at least one anti-return device disposed in the mixing chamber, at least one duct supplying air into the mixing chamber, a volume constituting a foam reserve in communication with the mixing chamber on the one hand and with an outlet pipe on the other, at least one stirring element arranged between the mixing chamber and the foam reserve, a pumping means.
  • the air supply duct is formed by the space between two walls, one comprising at least a part of the wall of the mixing chamber and an air inlet and the second wall being different. from the wall of the foaming liquid tank.
  • the air supply duct is formed by a groove formed in a part of the body of the device.
  • At least one air supply duct is formed by a channel molded into the body of the device.
  • At least one air supply duct is formed by a tube running along at least a portion of the wall of the device, connecting an air inlet to the ambient air in a region close to an opening of the foaming liquid tank.
  • one or more stirring elements are arranged in the mixing chamber.
  • the device comprises at least one filter element between the foam reserve and one end of the outlet duct.
  • the device according to the invention comprises an anti-return device between the foam reserve and an end of the outlet duct.
  • the device according to the invention comprises an anti-return device between the mixing chamber and the foam reserve.
  • At least a portion of the wall of the foam reserve of the device is deformable.
  • the device comprises a device for blocking the pumping means.
  • the device of the air inlet (s) have a cross section determined according to the cross section of the liquid supply duct to be foamed.
  • the pumping means is constituted by the outlet duct, one end of which penetrates into the volume of the foam reserve and is integral with a movable part in the volume of the foam reserve.
  • the pumping means is a bellows located above an anti-return device and the outlet conduit disposed at the periphery of the non-return device.
  • the device for producing foam cream is held on one end of the reservoir by means of a cap screwed or clipped onto said reservoir, said stopper being pierced so as to allow the outlet duct to pass and slide. .
  • the figures 1a , 2a , 2b and 3 show examples of embodiment of the device according to the invention.
  • the figure 2b represents the device, illustrated figure 2a in which the pumping means is compressed.
  • the manual device is intended to be mounted on a rigid, non-deformable reservoir (12) of liquid to be foamed (4).
  • the assembly may, for example, be made by screwing, as in the example of the figure 1a , by clipping, or by snapping as illustrated figure 3 .
  • the figure 3 shows an embodiment in which the device has a male element (15) snap in a groove of the reservoir (12).
  • the device for producing foam cream rests on the lip of one end of the reservoir (12).
  • a seal may, for example, be inserted between the end of the reservoir (12) and the foam cream producing device so as to seal.
  • the device for producing foam cream is held on one end of the reservoir (12), for example and without limitation, the neck, by means of a plug (13) for example screwed, clipped or snapped onto the tank (12).
  • the plug may be pierced so as to allow the outlet duct (9) to pass and to allow it to slide.
  • this plug (13) may also be clipped on a lip of the foam cream production device.
  • the figure 1a shows an exemplary embodiment in which a reservoir (12) of non-deformable foaming liquid (4) is closed by a foam cream production device according to the invention.
  • the device comprises a liquid supply pipe (1), one end of which is immersed in the liquid to be foamed and the other end is in communication with a mixing chamber (2).
  • This conduit (1) may be formed for example and without limitation, by a dip tube whose one end, forming the inlet of the conduit, is disposed in the bottom of the tank (12) of liquid to be foamed (4).
  • the other end forming the outlet of the liquid supply duct (1) is embedded in the mixing chamber (2) of the device.
  • the end immersed in the liquid reservoir may, for example, be beveled so as to avoid clogging the inlet when the conduit touches the bottom of the tank.
  • the liquid supply duct (1) and the mixing chamber (2) are not formed of two separate parts.
  • the mixing chamber (2) comprises an anti-return device (3a, 3b) preventing the fluid contained in this chamber (2) from going into the reservoir (12) while allowing a circulation of the reservoir (12) towards the chamber of mixture (2).
  • This anti-return device (3a, 3b) can be placed, for example, between the liquid supply duct (1) and the inlet of the mixing chamber (2).
  • the anti-return device (3a, 3b) may, for example, be formed by a movable element (3a) such as for example a ball or a needle resting on a substantially frustoconical seat (3c).
  • the seat (3c) of the anti-return device (3a, 3b) may for example be formed by a substantially frustoconical portion of the body of the end of the mixing chamber (2) in communication with the liquid supply duct (1). ) forming the inlet of said chamber (2).
  • a retaining device (3b) can also be associated with the movable element (3a) so as to limit the stroke of the latter and serve as a stop for the movable element (3a).
  • the retaining device (3b) may for example and without limitation, be achieved by a ring or lugs formed or placed on the inner wall of the mixing chamber (2).
  • the mixing chamber (2) also comprises one or more air inlets (5) allowing air to enter the chamber (2) thereby allowing the foaming liquid to be mixed with the air to form a foam.
  • This air inlet (5) will have a cross section determined according to the cross section of the liquid supply duct (1) so as to have an air / liquid foaming ratio to produce a quality foam. Indeed, too much foaming product (4) and not enough air produces a flowing foam.
  • the air inlet (5) is connected to an air supply duct (50).
  • This duct (50) has the function of allowing air to enter the mixing chamber (2) even when the air inlet (5) is below the level of the foaming liquid (4).
  • the air supply duct (50) may for example be formed by a channel, connecting the air inlet (5) to the ambient air above the filling level of the reservoir (12) of foaming liquid (4). ) for example, at a portion near the opening of said reservoir (12).
  • This channel may, for example, be molded along an outer portion of a wall of the device.
  • a groove may for example be hollowed out in the outer wall of the device at least over part of the path of said channel as illustrated.
  • Figure 2a or 2b In this embodiment, a groove has been cut on a portion of the outer wall of the mixing chamber (2) of the air inlet (5) to a region near the tank opening (12). ) of the liquid to be lathered (4).
  • This example is in no way limiting and in the embodiment variant with a piston pump the groove may for example be made along a portion of the outer wall of the mixing chamber (2) and a part of the reserve of foam (7).
  • At least a part of the body of the foam cream producing device comprising one or more air inlets (5), is formed of two pieces embedded in each other as illustrated.
  • Figures 1a and 1b In this embodiment, the air supply duct (50) is formed by the space between the two envelopes.
  • the figure 1b presents a cut of the device presented figure 1a , following the plan AA '.
  • projecting elements (51) such as, for example and without limitation, nipples or ribs keep the two parts separate.
  • the projecting elements (51) can be indifferently made on one of the two walls or on both walls.
  • complementary shapes may be formed on the wall facing the projecting elements (51) such as a groove cooperating with a nipple or a rib.
  • An advantage of these complementary shapes is that they facilitate the insertion of parts during assembly.
  • an L-shaped groove may be made to cooperate with a nipple. Such a groove makes it possible to lock the stud and thus and thus to prevent the parts from being broken after assembly.
  • the two walls may be of the same shape as for example two substantially cylindrical shapes concentric or not. They may also be of different shapes, for example a cylinder inserted inside a wall of substantially oval section.
  • An advantage of the different section walls is that in some cases they can make it possible to dispense with the projecting elements (51).
  • the duct (50) may be made by a small tube parallel to the body of the device connecting the air inlet (5) to the ambient air for example at the neck of the tank (12) of foaming liquid (4) as illustrated Figure 2a or 2b .
  • the air supply duct (50) may also for example be pierced in the wall of the device.
  • the mixing chamber (2) communicates with a foam tank (7). Between the mixing chamber (2) and the foam tank (7), one or more stirring elements (6) are inserted. These stirring elements (6) may be, for example, sieves, grids or any other porous element.
  • the product to be foamed (4) comprises an active agent optionally combined with a foaming agent, diluted in water.
  • the passage of the liquid foaming / air mixture through the stirring element (s) (6) makes it possible to stir the liquid in the air and transform the latter into foam.
  • An anti-return device (30a, 30b) is inserted between the mixing chamber (2) and the foam reserve (7).
  • the anti-return device comprises a movable element (30a), such as for example and without limitation, a ball or a needle, resting on a seat (30c) of substantially frustoconical shape.
  • a retainer (30b) may also be associated with the movable member (30a) to limit its stroke.
  • the retaining device (30b) may for example and without limitation be made by a ring or lugs formed or placed on the inner wall of the foam reserve (7).
  • the foam reserve (7) comprises means for pumping the foam.
  • This pumping means can be produced, for example and without limitation, by a piston (8a) sliding inside the volume of the foam reserve (7) and an elastic return means (8b) such as a spring.
  • the elastic return means (8b) also participates in the stirring. During its movement, it improves the quality of the foam. It also prevents the drying of the foam.
  • One end of the outlet duct (9) is integral with the piston (8a) and the cross member allowing the foam contained in the reserve (7) to be expelled.
  • a retaining means (8c) such as for example a disk or a ring makes it possible to limit the stroke of the piston (8a) and to prevent it from coming out of the foam reserve (7).
  • the pumping means comprises the outlet duct (9), a part of which penetrates inside the volume of the foam reserve (7) and is integral with a movable part in the foam reserve (7).
  • the pumping means may also be formed by at least a portion of the deformable and elastic body of the foam reserve (7) as illustrated. Figure 2a or 2b .
  • the compression of the foam reserve (7) expels the foam from the latter and its decompression to suck it from the mixing chamber (2).
  • the pumping means is a bellows located for example above an anti-return device (11a, 11b) and the outlet duct (9) is disposed at the periphery of said anti-return device (11a, 11b). ).
  • the foam is extracted from the foam reserve (7) via an outlet duct (9) in communication with this reserve (7), for example through the body of the piston (8a) as illustrated in the example of realization of the figure 1a or 2 .
  • One or more filter elements (10) can be inserted between one end of the outlet duct (9) and the foam reservoir (7).
  • at least one filter element (10) is inserted into the outlet duct (9).
  • a filter element (10) such as a grid, is placed at one end of the outlet duct (9).
  • the filter elements (10) can be in the form of sieves, grids or porous elements. These filtering elements (10) are intended to refine the foam by filtering and turn it into foam cream.
  • the presence of filter elements (10) in the outlet duct (9) allows, in certain cases, to remove the anti-return device (11a, 11b) also present in this duct (9). This may be the case, for example, when the filter element or elements (10) have very thin openings. In this case, the filter elements (10) create a strong resistance inside the outlet duct (9) favoring the passage of the foaming liquid / air mixture through the brewing element (6) rather than air through the outlet pipe (9) during decompression of the pumping means. This may also be the case when the filter elements (10) are numerous and / or thick. As in the previous case, they create an important resistance inside the outlet duct (9).
  • the classic foam is in the form of rather coarse air bubbles, of different sizes and very airy.
  • the foam cream is in the form of a foam more homogeneous than the classic foam with more regular bubbles and much thinner.
  • the foam cream forms a product denser and more compact than the classic foam. It is in the form of a fluid much less ventilated than the classic foam.
  • the foam cream contains more foaming than air from where its consistency approximates that of a gel.
  • the foam cream obtained will be all the more compact and with bubbles even more fine and regular that the size of the openings of the filter elements (10) will be fine.
  • the quality of the foam cream can also be improved by increasing the number of filter elements (10). In the case of an arrangement of several filter elements (10) in series, it is possible to vary the pore size progressively. Depending on the product to be foamed used, we will start with a filter element having fairly large pores and then use elements having openings increasingly fine. For other products, it will act in reverse.
  • the device for producing foam cream may also comprise a blocking system for the pumping means.
  • This system may for example be achieved by a pin preventing movement of the piston (8a).
  • the system can, for example, be locked by pivoting the outlet duct (9) in one direction and unlocked by rotating it in the opposite direction.
  • the figure 3 presents another variant embodiment of the device according to the invention.
  • at least a part of the envelope of the foam reserve (7) is deformable and forms the pumping means.
  • the device for producing foam cream comprises a supply duct (1) of liquid to be foamed (4), one end of which forms the inlet of the duct and dips into the tank (12). foaming liquid (4).
  • the second end of the liquid supply duct (1) is in communication with the mixing chamber (2).
  • the mixing chamber (2) for mixing the liquid with the air comprises an air inlet (5) connected to an air supply duct (50) and an anti-return device (3a, 3b) avoiding mixing. liquid / air to enter the reservoir (12) foaming liquid (4).
  • the mixing chamber (2) may also comprise one or more first stirring elements (6) for preparing a foam.
  • the anti-return device (3a, 3b) comprises a movable element (3a) such as for example a ball or a needle resting on a substantially frustoconical seat (3c) and a restraining device (3b) limiting the stroke of the movable member (3a).
  • a movable element (3a) such as for example a ball or a needle resting on a substantially frustoconical seat (3c) and a restraining device (3b) limiting the stroke of the movable member (3a).
  • the mixing chamber (2) is in communication with the foam reserve (7) through a conduit (20) inside the mixing chamber (2) and of smaller diameter than that of this last.
  • This duct (20) passes through two flanges (11a, 21).
  • a first flange (11a) is formed of a flexible crown such as a membrane of elastic material forming a movable member.
  • a second flange (21) is made of rigid material and forms a tight separation between the foam reserve (7) and the mixing chamber (2).
  • an anti-return device (30a, 30b).
  • the device according to the invention also comprises an outlet duct (9) for extracting and dispensing the foam cream and a second anti-return device (11a, 11b).
  • This second anti-return device (11a, 11b) may for example consist of a movable element (11a) formed for example by a flexible membrane ring-shaped mounted on the conduit (20) present inside the mixing chamber (2).
  • the anti-return device also comprises a retaining device (11b) allowing the movable element (11a) to move only in one direction.
  • the retaining device (11b) may, for example and without limitation, be formed by a ring or lugs inserted or formed in the inner wall of the mixing chamber (2).
  • the retainer (11b) serves as a stop for the movable member, preventing it from deforming in one direction.
  • a stirring element (6) is mounted between the mixing chamber (2) and the foam reserve (7).
  • a particularity of this embodiment is that the air / foaming liquid mixture from the mixing chamber (2) passes through the brewing element (6) twice.
  • This stirring element (6) thus provides the two mixing and filtering functions of the mixture.
  • This embodiment can reduce the number of parts by removing the filter element (10).
  • the return, by elasticity of the pumping means (8) to its uncompressed position creates inside the foam reserve (7) a depression.
  • This depression attempts to lift the movable member (11a) of the anti-return device in communication with the outlet duct (9) but the latter is blocked by the retaining element (11b) preventing air from entering through the duct. output (9).
  • the depression also causes the movable element (3a) of the anti-return device (3a, 3b) present in the mixing chamber (2) to rise and draws an air / foaming liquid mixture fed by the liquid conduit (1) and the air inlet (5). This mixture crosses a first time the stirring element (6) filling the reserve (7) of the foam thus formed.
  • the foam present in the foam reserve (7), is expelled from the latter and passes again through the stirring element (6) thus producing a foam cream by filtering through the brewing element (6).
  • the foam cream is blocked at the anti-return device (30a, 30b) present in the mixing chamber (2) and presses against the mobile element (11a) of the anti-backflow device. return (11a, 11b) present at the outlet duct (9) allowing the latter to be expelled through said outlet duct (9).

Landscapes

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

Description

La présente invention concerne le domaine des dispositifs de production de mousse par des pompes à main fonctionnant avec un réservoir non déformable contenant un mélange à base de liquide moussant. La présente invention concerne plus particulièrement un dispositif de production de crème de mousse.The present invention relates to the field of foam production devices by hand pumps operating with a non-deformable container containing a mixture of foaming liquid. The present invention relates more particularly to a device for producing foam cream.

Un problème se pose, dans le domaine des dispositifs de production de mousse, lorsque ledit dispositif est de grande dimension et qu'il est inséré à l'intérieur d'un réservoir. Le problème vient du fait que l'entrée d'air du dispositif est placée éloigné du col du réservoir vers le bas. En effet, si le réservoir de liquide à faire mousser est rempli complètement, l'entrée d'air risque de se trouver plongée dans le liquide empêchant l'air d'entrer dans le dispositif. Il faut donc, lors du remplissage du réservoir, penser à laisser un volume d'air suffisant pour que l'entrée d'air ne soit pas en contact avec le liquide moussant et puisse remplir sa fonction. Ceci a pour inconvénient de ne pas pouvoir remplir le réservoir de liquide entièrement et donc d'être obligé de prévoir un réservoir plus grand que le volume de liquide.A problem arises, in the field of foam production devices, when said device is of large size and is inserted inside a tank. The problem is that the air inlet of the device is placed away from the tank neck downwards. Indeed, if the liquid tank to be foamed is completely filled, the air inlet may be immersed in the liquid preventing air from entering the device. Therefore, when filling the tank, remember to leave a sufficient volume of air so that the air inlet is not in contact with the foaming liquid and can perform its function. This has the disadvantage of not being able to fill the tank with liquid completely and therefore to be obliged to provide a tank larger than the volume of liquid.

Les brevets américains US 4 147 306 et US 4 156 505 présentent des appareils de production de mousse à réservoir déformable dans lequel la mousse est produite quand leur réservoir est déformé par compression. Dans ces appareils, la chambre de mélange se trouve au dessus de l'ouverture du réservoir et l'entrée d'air se fait au moyen de trous au niveau de l'extrémité du réservoir. Cependant, cette solution ne permet pas d'incorporer le dispositif à l'intérieur du réservoir. En effet, lorsque le dispositif est de grande dimension, l'entrée d'air se trouve plongée dans le liquide, empêchant l'air de pénétrer à l'intérieur du dispositif. Cette solution oblige donc à laisser le dispositif de production de mousse à l'extérieur du réservoir ce qui conduit à un appareil assez haut et donc pas très esthétique ou avec un réservoir de petite contenance si on veut garder une taille acceptable pour l'appareil.US patents US 4,147,306 and US 4,156,505 have deformable reservoir foam producing apparatus in which the foam is produced when the reservoir is deformed by compression. In these devices, the mixing chamber is above the opening of the tank and the air inlet is made by means of holes at the end of the tank. However, this solution does not allow to incorporate the device inside the tank. Indeed, when the device is large, the air inlet is immersed in the liquid, preventing air from entering the device. This solution therefore makes it necessary to leave the foam production device outside the tank which leads to a device high enough and therefore not very aesthetic or with a tank of small capacity if we want to keep an acceptable size for the device.

La demande de brevet américain US 204/060 945 présente un distributeur de mousse comprenant un réservoir déformable, un logement, et une chambre mobile à l'intérieur du logement. Lorsque l'utilisateur presse ou relâche le réservoir, une pièce annulaire déformable est comprimée ou relâchée par la chambre mobile permettant à l'air soit de circuler de l'extérieur du réservoir vers l'intérieur soit de circuler de l'intérieur du réservoir vers l'intérieur de la chambre en passant par l'espace libre entre la chambre mobile et le logement de diamètre supérieur. Cependant cette solution ne peut pas être appliquée au distributeur de mousse ayant un réservoir non déformable. En effet, la pression exercée par les moyens de pompages est beaucoup plus faible que lorsqu'un utilisateur presse un réservoir déformable. Les moyens de pompage ne permettraient pas de comprimer la pièce annulaire. L'air n'entrerait donc pas dans la chambre et seul le liquide serait pompé.The US patent application US 204/060945 has a foam dispenser comprising a deformable reservoir, a housing, and a movable chamber within the housing. When the user presses or releases the reservoir, a deformable annular member is compressed or released by the movable chamber allowing air to flow from the outside of the reservoir inwardly or to flow from the interior of the reservoir to the inside of the chamber through the free space between the moving chamber and the housing of greater diameter. However, this solution can not be applied to the foam dispenser having a non-deformable reservoir. Indeed, the pressure exerted by the pumping means is much lower than when a user presses a deformable reservoir. The pumping means would not allow to compress the annular piece. The air would not enter the room and only the liquid would be pumped.

Une autre solution proposée par l'art antérieur consiste en un réservoir avec un col ayant la même hauteur que le corps du dispositif de production de mousse. De ce fait, l'entrée d'air n'est pas plongée dans le liquide à faire mousser. Un inconvénient de cette solution est un réservoir ayant un col assez haut et donc pas très esthétique.Another solution proposed by the prior art consists of a tank with a neck having the same height as the body of the foam producing device. As a result, the air inlet is not immersed in the liquid to be lathered. A disadvantage of this solution is a tank having a neck high enough and therefore not very aesthetic.

Les documents WO0139893 , WO2008133491 , US4932567 , WO2006131980 décrivent aussi des dispositifs de production de mousse.The documents WO0139893 , WO2008133491 , US4932567 , WO2006131980 also describe foam generating devices.

Dans ce contexte, il est intéressant de proposer une solution.In this context, it is interesting to propose a solution.

La présente invention a pour but de pallier certains inconvénients de l'art antérieur en proposant un dispositif de production de crème de mousse ne nécessitant pas de laisser un volume d'air important dans le réservoir et donc permettant de remplir ce dernier presque complètement.The object of the present invention is to overcome certain disadvantages of the prior art by proposing a device for producing foam cream that does not require leaving a large volume of air in the tank and thus making it possible to fill the tank almost completely.

Ce but est atteint par un dispositif de production de crème de mousse tel que revendiqué. En particulier, le dispositif est apte à être monté sur un réservoir rigide de liquide à faire mousser comprenant un conduit d'alimentation en liquide, une chambre de mélange, au moins un dispositif anti retour disposé dans la chambre de mélange, au moins un conduit d'alimentation en air débouchant dans la chambre de mélange, un volume constituant une réserve de mousse en communication d'une part, avec la chambre de mélange et d'autre part avec un conduit de sortie, au moins un élément de brassage disposé entre la chambre de mélange et la réserve de mousse, un moyen de pompage.This object is achieved by a foam cream production device as claimed. In particular, the device is adapted to be mounted on a rigid reservoir of liquid to be foamed comprising a liquid supply duct, a mixing chamber, at least one anti-return device disposed in the mixing chamber, at least one duct supplying air into the mixing chamber, a volume constituting a foam reserve in communication with the mixing chamber on the one hand and with an outlet pipe on the other, at least one stirring element arranged between the mixing chamber and the foam reserve, a pumping means.

Selon une autre particularité, le conduit d'alimentation en air est formé par l'espace entre deux parois, l'une comprenant au moins une partie de la paroi de la chambre de mélange et une entrée d'air et la seconde paroi étant différente de la paroi du réservoir de liquide moussant.According to another feature, the air supply duct is formed by the space between two walls, one comprising at least a part of the wall of the mixing chamber and an air inlet and the second wall being different. from the wall of the foaming liquid tank.

Selon une autre particularité, le conduit d'alimentation en air est formé par une gorge formée dans une partie du corps du dispositif.In another feature, the air supply duct is formed by a groove formed in a part of the body of the device.

Selon une autre particularité, au moins un conduit d'alimentation en air est formé par un canal moulé dans le corps du dispositif.In another feature, at least one air supply duct is formed by a channel molded into the body of the device.

Selon une autre particularité, au moins un conduit d'alimentation en air est formé par un tube longeant au moins une partie de la paroi du dispositif, reliant une entrée d'air à l'air ambiant dans une région proche d'une ouverture du réservoir de liquide moussant.According to another feature, at least one air supply duct is formed by a tube running along at least a portion of the wall of the device, connecting an air inlet to the ambient air in a region close to an opening of the foaming liquid tank.

Selon une autre particularité, un ou plusieurs éléments de brassage sont disposés dans la chambre de mélange.According to another feature, one or more stirring elements are arranged in the mixing chamber.

Selon une autre particularité, le dispositif comporte au moins un élément filtrant entre la réserve de mousse et une extrémité du conduit de sortie.According to another feature, the device comprises at least one filter element between the foam reserve and one end of the outlet duct.

Selon une autre particularité, le dispositif selon l'invention comporte un dispositif anti retour entre la réserve de mousse et une extrémité du conduit de sortie.According to another feature, the device according to the invention comprises an anti-return device between the foam reserve and an end of the outlet duct.

Selon une autre particularité, le dispositif selon l'invention comporte un dispositif anti retour entre la chambre de mélange et la réserve de mousse.According to another feature, the device according to the invention comprises an anti-return device between the mixing chamber and the foam reserve.

Selon une autre particularité, au moins une partie de la paroi de la réserve de mousse du dispositif est déformable.According to another feature, at least a portion of the wall of the foam reserve of the device is deformable.

Selon une autre particularité, le dispositif comprend un dispositif de blocage du moyen de pompage.According to another feature, the device comprises a device for blocking the pumping means.

Selon une autre particularité, le dispositif de la ou les entrées d'air ont une section transversale déterminée en fonction de la section transversale du conduit d'alimentation en liquide à faire mousser.According to another feature, the device of the air inlet (s) have a cross section determined according to the cross section of the liquid supply duct to be foamed.

Selon une autre particularité, le moyen de pompage est constitué par le conduit de sortie dont une extrémité pénètre dans le volume de la réserve de mousse et est solidaire d'une partie déplaçable dans le volume de la réserve de mousse.According to another feature, the pumping means is constituted by the outlet duct, one end of which penetrates into the volume of the foam reserve and is integral with a movable part in the volume of the foam reserve.

Selon une autre particularité, le moyen de pompage est un soufflet situé au dessus d'un dispositif anti retour et le conduit de sortie disposé à la périphérie du dispositif anti-retour.According to another feature, the pumping means is a bellows located above an anti-return device and the outlet conduit disposed at the periphery of the non-return device.

Selon une autre particularité le dispositif de production de crème de mousse est maintenu sur une extrémité du réservoir par l'intermédiaire d'un bouchon vissé ou clipsé sur ledit réservoir, ledit bouchon étant percé de façon à pouvoir laisser passer et coulisser le conduit de sortie.According to another particular feature, the device for producing foam cream is held on one end of the reservoir by means of a cap screwed or clipped onto said reservoir, said stopper being pierced so as to allow the outlet duct to pass and slide. .

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 1a, représente une vue de coupe d'un exemple de réalisation du dispositif de production de crème de mousse monté sur un réservoir de liquide à faire mousser.
  • la figure 1b représente des vues de coupe d'exemples de réalisation d'un conduit d'alimentation en air.
  • les figures 2a, 2b et 3 représentent une vue de coupe de variantes de réalisation du dispositif de production de crème de mousse suivant l'invention.
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 1a , represents a sectional view of an exemplary embodiment of the foam cream production device mounted on a tank of liquid to be foamed.
  • the figure 1b represents sectional views of exemplary embodiments of an air supply duct.
  • the Figures 2a, 2b and 3 represent a sectional view of alternative embodiments of the foam cream production device according to the invention.

L'invention va à présent être décrite en référence aux figures précédemment citées.The invention will now be described with reference to the figures mentioned above.

Les figures 1a, 2a, 2b et 3 présentent des exemples de réalisation du dispositif selon l'invention. La figure 2b représente le dispositif, illustré figure 2a, dans lequel le moyen de pompage est comprimé. Le dispositif manuel est destiné à être monté sur un réservoir (12) rigide, non déformable de liquide à faire mousser (4). Le montage pourra, par exemple, être réalisé par vissage, comme dans l'exemple de la figure 1a, par clipage, ou par encliquetage comme illustré figure 3. La figure 3 présente un mode de réalisation dans lequel le dispositif possède un élément male (15) encliquetable dans une gorge du réservoir (12). Suivant une variante de réalisation, le dispositif de production de crème de mousse repose sur la lèvre d'une extrémité du réservoir (12). Un joint pourra, par exemple, être inséré entre l'extrémité du réservoir (12) et le dispositif de production de crème de mousse de façon à assurer l'étanchéité. Le dispositif de production de crème de mousse est maintenu sur une extrémité du réservoir (12), par exemple et de façon non limitative, le goulot, par l'intermédiaire d'un bouchon (13) par exemple vissé, clipsé ou encliqueté sur le réservoir (12). Le bouchon pourra être percé de façon à pouvoir laisser passer le conduit de sortie (9) et de façon à pouvoir le laisser coulisser. Suivant un autre mode de réalisation ce bouchon (13) pourra également être clipsé sur une lèvre du dispositif de production de crème de mousse.The figures 1a , 2a , 2b and 3 show examples of embodiment of the device according to the invention. The figure 2b represents the device, illustrated figure 2a in which the pumping means is compressed. The manual device is intended to be mounted on a rigid, non-deformable reservoir (12) of liquid to be foamed (4). The assembly may, for example, be made by screwing, as in the example of the figure 1a , by clipping, or by snapping as illustrated figure 3 . The figure 3 shows an embodiment in which the device has a male element (15) snap in a groove of the reservoir (12). According to an alternative embodiment, the device for producing foam cream rests on the lip of one end of the reservoir (12). A seal may, for example, be inserted between the end of the reservoir (12) and the foam cream producing device so as to seal. The device for producing foam cream is held on one end of the reservoir (12), for example and without limitation, the neck, by means of a plug (13) for example screwed, clipped or snapped onto the tank (12). The plug may be pierced so as to allow the outlet duct (9) to pass and to allow it to slide. According to another embodiment this plug (13) may also be clipped on a lip of the foam cream production device.

La figure 1a présente un exemple de réalisation dans lequel un réservoir (12) de liquide moussant (4) non déformable est fermé par un dispositif de production de crème de mousse suivant l'invention.The figure 1a shows an exemplary embodiment in which a reservoir (12) of non-deformable foaming liquid (4) is closed by a foam cream production device according to the invention.

Le dispositif comprend un conduit d'alimentation en liquide (1) dont une extrémité plonge dans le liquide à faire mousser et l'autre extrémité est en communication avec une chambre de mélange (2). Ce conduit (1) peut être formé par exemple et de façon non limitative, par un tube plongeur dont une extrémité, formant l'entrée du conduit, est disposée dans le bas du réservoir (12) de liquide à faire mousser (4). L'autre extrémité, formant la sortie du conduit d'alimentation en liquide (1) est encastré dans la chambre de mélange (2) du dispositif. L'extrémité plongeant dans le réservoir de liquide pourra, par exemple, être biseautée de façon à éviter d'obstruer l'entrée lorsque le conduit touche le fond du réservoir. Suivant un autre mode de réalisation le conduit d'alimentation en liquide (1) et la chambre de mélange (2) ne sont pas formés de deux pièces distinctes.The device comprises a liquid supply pipe (1), one end of which is immersed in the liquid to be foamed and the other end is in communication with a mixing chamber (2). This conduit (1) may be formed for example and without limitation, by a dip tube whose one end, forming the inlet of the conduit, is disposed in the bottom of the tank (12) of liquid to be foamed (4). The other end forming the outlet of the liquid supply duct (1) is embedded in the mixing chamber (2) of the device. The end immersed in the liquid reservoir may, for example, be beveled so as to avoid clogging the inlet when the conduit touches the bottom of the tank. According to another embodiment the liquid supply duct (1) and the mixing chamber (2) are not formed of two separate parts.

La chambre de mélange (2) comprend un dispositif anti retour (3a, 3b) empêchant le fluide contenu dans cette chambre (2) d'aller dans le réservoir (12) tout en autorisant une circulation du réservoir (12) vers la chambre de mélange (2). Ce dispositif anti retour (3a, 3b) peut être placé, par exemple, entre le conduit d'alimentation en liquide (1) et l'entrée de la chambre de mélange (2). Le dispositif anti retour (3a, 3b) peut, par exemple, être formé par un élément mobile (3a) comme par exemple une bille ou un pointeau reposant sur un siège (3c) sensiblement tronconique. Le siège (3c) du dispositif anti retour (3a, 3b) pourra par exemple être réalisé par une partie sensiblement tronconique du corps de l'extrémité de la chambre de mélange (2) en communication avec le conduit d'alimentation en liquide (1) formant l'entrée de ladite chambre (2). Un dispositif de retenue (3b) peut également être associé à l'élément mobile (3a) de façon à limiter la course de ce dernier et servir de butée à l'élément mobile (3a). Le dispositif de retenue (3b) pourra par exemple et de façon non limitative, être réalisé par un anneau ou des ergots formés ou placés sur la paroi interne de la chambre de mélange (2).The mixing chamber (2) comprises an anti-return device (3a, 3b) preventing the fluid contained in this chamber (2) from going into the reservoir (12) while allowing a circulation of the reservoir (12) towards the chamber of mixture (2). This anti-return device (3a, 3b) can be placed, for example, between the liquid supply duct (1) and the inlet of the mixing chamber (2). The anti-return device (3a, 3b) may, for example, be formed by a movable element (3a) such as for example a ball or a needle resting on a substantially frustoconical seat (3c). The seat (3c) of the anti-return device (3a, 3b) may for example be formed by a substantially frustoconical portion of the body of the end of the mixing chamber (2) in communication with the liquid supply duct (1). ) forming the inlet of said chamber (2). A retaining device (3b) can also be associated with the movable element (3a) so as to limit the stroke of the latter and serve as a stop for the movable element (3a). The retaining device (3b) may for example and without limitation, be achieved by a ring or lugs formed or placed on the inner wall of the mixing chamber (2).

La chambre de mélange (2) comprend également une ou plusieurs entrées d'air (5) permettant à l'air d'entrer à l'intérieur de la chambre (2) autorisant ainsi un brassage du liquide moussant avec l'air pour former une mousse. Cette entrée d'air (5) aura une section transversale déterminée en fonction de la section transversales du conduit d'alimentation en liquide (1) de façon à avoir une proportion air/liquide moussant permettant de produire une mousse de qualité. En effet, une quantité trop importante de produit moussant (4) et pas assez d'air produit une mousse qui coule.The mixing chamber (2) also comprises one or more air inlets (5) allowing air to enter the chamber (2) thereby allowing the foaming liquid to be mixed with the air to form a foam. This air inlet (5) will have a cross section determined according to the cross section of the liquid supply duct (1) so as to have an air / liquid foaming ratio to produce a quality foam. Indeed, too much foaming product (4) and not enough air produces a flowing foam.

L'entrée d'air (5) est reliée à un conduit d'alimentation en air (50). Ce conduit (50) a pour fonction de permettre à l'air de pénétrer dans la chambre de mélange (2) même quand l'entrée d'air (5) se trouve sous le niveau du liquide moussant (4).The air inlet (5) is connected to an air supply duct (50). This duct (50) has the function of allowing air to enter the mixing chamber (2) even when the air inlet (5) is below the level of the foaming liquid (4).

Le conduit d'alimentation en air (50) pourra par exemple être formé par un canal, reliant l'entrée d'air (5) à l'air ambiant au dessus du niveau de remplissage du réservoir (12) de liquide moussant (4) par exemple, au niveau d'une partie proche de l'ouverture dudit réservoir (12). Ce canal pourra, par exemple, être moulé le long d'une partie externe d'une paroi du dispositif. De façon à réduire le volume de la partie saillante du canal, une gorge pourra par exemple être creusée dans la paroi extérieure du dispositif au moins sur une partie du tracé dudit canal comme illustré figure 2a ou 2b. Dans cet exemple de réalisation, une gorge a été creusée sur une partie de la paroi externe de la chambre de mélange (2) de l'entrée d'air (5) jusqu'à une région proche de l'ouverture du réservoir (12) de liquide à faire mousser (4). Cet exemple n'est nullement limitatif et dans la variante de réalisation avec une pompe à piston la gorge pourra par exemple être réalisée le long d'une partie de la paroi externe de la chambre de mélange (2) et une partie de la réserve de mousse (7).The air supply duct (50) may for example be formed by a channel, connecting the air inlet (5) to the ambient air above the filling level of the reservoir (12) of foaming liquid (4). ) for example, at a portion near the opening of said reservoir (12). This channel may, for example, be molded along an outer portion of a wall of the device. In order to reduce the volume of the protruding part of the channel, a groove may for example be hollowed out in the outer wall of the device at least over part of the path of said channel as illustrated. Figure 2a or 2b . In this embodiment, a groove has been cut on a portion of the outer wall of the mixing chamber (2) of the air inlet (5) to a region near the tank opening (12). ) of the liquid to be lathered (4). This example is in no way limiting and in the embodiment variant with a piston pump the groove may for example be made along a portion of the outer wall of the mixing chamber (2) and a part of the reserve of foam (7).

Selon un autre mode de réalisation, au moins une partie du corps du dispositif de production de crème de mousse, comprenant une ou plusieurs entrées d'air (5), est formé de deux pièces encastrées les unes dans les autres comme illustré figures 1a et 1b. Dans cet exemple de réalisation, le conduit d'alimentation en air (50) est formé par l'espace entre les deux enveloppes. La figure 1b présente une coupe du dispositif présenté figure 1a, suivant le plan AA'. Sur ces exemples, des éléments saillants (51) comme par exemple et de façon non limitative, des tétons ou des nervures maintiennent les deux pièces séparées.According to another embodiment, at least a part of the body of the foam cream producing device, comprising one or more air inlets (5), is formed of two pieces embedded in each other as illustrated. Figures 1a and 1b . In this embodiment, the air supply duct (50) is formed by the space between the two envelopes. The figure 1b presents a cut of the device presented figure 1a , following the plan AA '. In these examples, projecting elements (51) such as, for example and without limitation, nipples or ribs keep the two parts separate.

Les éléments saillant (51) peuvent être indifféremment réalisés sur une des deux parois ou sur les deux parois. De même, des formes complémentaires peuvent être réalisées sur la paroi faisant face aux éléments saillants (51) comme par exemple une rainure venant coopérer avec un téton ou une nervure. Un avantage de ces formes complémentaires, est qu'elles facilitent l'insertion des pièces lors de l'assemblage. Suivant un autre exemple, une rainure en forme de L pourra être réalisée en vue de coopérer avec un téton. Une telle rainure permet de verrouiller le téton et donc et donc d'éviter que les pièces ne se déboitent après l'assemblage.The projecting elements (51) can be indifferently made on one of the two walls or on both walls. Similarly, complementary shapes may be formed on the wall facing the projecting elements (51) such as a groove cooperating with a nipple or a rib. An advantage of these complementary shapes is that they facilitate the insertion of parts during assembly. In another example, an L-shaped groove may be made to cooperate with a nipple. Such a groove makes it possible to lock the stud and thus and thus to prevent the parts from being broken after assembly.

Comme illustré figure 1c les deux parois peuvent être de même formes comme par exemple deux formes sensiblement cylindriques concentriques ou non. Elles peuvent également être de formes différentes comme par exemple un cylindre inséré à l'intérieur d'une paroi de section sensiblement ovale. Un avantage des parois de section différentes est que dans certains cas elles peuvent permettre de se passer des éléments saillants (51).As illustrated figure 1c the two walls may be of the same shape as for example two substantially cylindrical shapes concentric or not. They may also be of different shapes, for example a cylinder inserted inside a wall of substantially oval section. An advantage of the different section walls is that in some cases they can make it possible to dispense with the projecting elements (51).

Selon un autre exemple non limitatif, le conduit (50) pourra être réalisé par un petit tube parallèle au corps du dispositif reliant l'entrée d'air (5) à l'air ambiant par exemple au niveau du goulot du réservoir (12) de liquide moussant (4) comme illustré figure 2a ou 2b. Le conduit d'alimentation en air (50) pourra également par exemple être percé dans la paroi du dispositif.According to another nonlimiting example, the duct (50) may be made by a small tube parallel to the body of the device connecting the air inlet (5) to the ambient air for example at the neck of the tank (12) of foaming liquid (4) as illustrated Figure 2a or 2b . The air supply duct (50) may also for example be pierced in the wall of the device.

La chambre de mélange (2) communique avec un réservoir de mousse (7). Entre la chambre de mélange (2) et le réservoir de mousse (7), un ou plusieurs éléments de brassage (6) sont insérés. Ces éléments de brassage (6) peuvent être, par exemple, des tamis, des grilles ou tout autre élément poreux.The mixing chamber (2) communicates with a foam tank (7). Between the mixing chamber (2) and the foam tank (7), one or more stirring elements (6) are inserted. These stirring elements (6) may be, for example, sieves, grids or any other porous element.

Le produit à faire mousser (4) comprend un agent actif éventuellement associé à un agent moussant, dilué dans de l'eau. Le passage du mélange liquide moussant/air à travers le ou les éléments de brassage (6) permet de brasser le liquide dans l'air et transforme ce dernier en mousse.The product to be foamed (4) comprises an active agent optionally combined with a foaming agent, diluted in water. The passage of the liquid foaming / air mixture through the stirring element (s) (6) makes it possible to stir the liquid in the air and transform the latter into foam.

Un dispositif anti retour (30a, 30b) est inséré entre la chambre de mélange (2) et la réserve de mousse (7). Le dispositif anti retour comprend un élément mobile (30a), comme par exemple et de façon non limitative, une bille ou un pointeau, reposant sur un siège (30c) de forme sensiblement tronconique. Un dispositif de retenue (30b) peut également être associé à l'élément mobile (30a) de façon à limiter sa course. Comme décrit précédemment, le dispositif de retenue (30b) pourra par exemple et de façon non limitative, être réalisé par un anneau ou des ergots formés ou placés sur la paroi interne de la réserve de mousse (7).An anti-return device (30a, 30b) is inserted between the mixing chamber (2) and the foam reserve (7). The anti-return device comprises a movable element (30a), such as for example and without limitation, a ball or a needle, resting on a seat (30c) of substantially frustoconical shape. A retainer (30b) may also be associated with the movable member (30a) to limit its stroke. As described above, the retaining device (30b) may for example and without limitation be made by a ring or lugs formed or placed on the inner wall of the foam reserve (7).

Après le passage à travers l'élément de brassage (6) la mousse pénètre dans une réserve de mousse (7). La réserve de mousse (7) comprend un moyen de pompage de la mousse. Ce moyen de pompage peut être réalisé, par exemple et de façon non limitative, par un piston (8a) coulissant à l'intérieur du volume de la réserve de mousse (7) et un moyen de rappel élastique (8b) comme par exemple un ressort. Le moyen de rappel élastique (8b) participe également au brassage. Lors de son mouvement, il permet d'améliorer la qualité de la mousse. Il permet également d'éviter le séchage de la mousse. Une extrémité du conduit de sortie (9) est solidaire du piston (8a) et le traverse permettant à la mousse contenu dans la réserve (7) d'être expulsée. Un moyen de retenue (8c) comme par exemple un disque ou un anneau permet de limiter la course du piston (8a) et de l'empêcher de sortir de la réserve de mousse (7). Selon une variante de réalisation, le moyen de pompage comprend le conduit de sortie (9) dont une partie pénètre à l'intérieur du volume de la réserve de mousse (7) et est solidaire d'une partie déplaçable dans la réserve de mousse (7).After passing through the stirring element (6) the foam enters a foam reserve (7). The foam reserve (7) comprises means for pumping the foam. This pumping means can be produced, for example and without limitation, by a piston (8a) sliding inside the volume of the foam reserve (7) and an elastic return means (8b) such as a spring. The elastic return means (8b) also participates in the stirring. During its movement, it improves the quality of the foam. It also prevents the drying of the foam. One end of the outlet duct (9) is integral with the piston (8a) and the cross member allowing the foam contained in the reserve (7) to be expelled. A retaining means (8c) such as for example a disk or a ring makes it possible to limit the stroke of the piston (8a) and to prevent it from coming out of the foam reserve (7). According to a variant of realization, the pumping means comprises the outlet duct (9), a part of which penetrates inside the volume of the foam reserve (7) and is integral with a movable part in the foam reserve (7).

Le moyen de pompage peut également être réalisé par au moins une partie du corps déformable et élastique de la réserve de mousse (7) comme illustré figure 2a ou 2b. La compression de la réserve de mousse (7) permet d'expulser la mousse de cette dernière et sa décompression de l'aspirer de la chambre de mélange (2). Selon un mode de réalisation, le moyen de pompage est un soufflet situé par exemple au dessus d'un dispositif anti retour (11a, 11b) et le conduit de sortie (9) est disposé à la périphérie dudit dispositif anti retour (11a, 11b).The pumping means may also be formed by at least a portion of the deformable and elastic body of the foam reserve (7) as illustrated. Figure 2a or 2b . The compression of the foam reserve (7) expels the foam from the latter and its decompression to suck it from the mixing chamber (2). According to one embodiment, the pumping means is a bellows located for example above an anti-return device (11a, 11b) and the outlet duct (9) is disposed at the periphery of said anti-return device (11a, 11b). ).

Une fois pompée, la mousse est extraite de la réserve de mousse (7) par un conduit de sortie (9) en communication avec cette réserve (7) par exemple à travers le corps du piston (8a) comme illustré dans l'exemple de réalisation de la figure 1a ou 2.Once pumped, the foam is extracted from the foam reserve (7) via an outlet duct (9) in communication with this reserve (7), for example through the body of the piston (8a) as illustrated in the example of realization of the figure 1a or 2 .

Un ou plusieurs éléments filtrants (10) peuvent être insérés entre une des extrémités du conduit de sortie (9) et la réserve de mousse (7). Selon un exemple de réalisation non limitatif, au moins un élément filtrant (10) est inséré dans le conduit de sortie (9). Selon une autre variante, un élément filtrant (10) comme par exemple une grille, est placé à une extrémité du conduit de sortie (9). Les éléments filtrants (10) peuvent se présenter sous la forme de tamis, de grilles ou d'éléments poreux. Ces éléments filtrants (10) ont pour but d'affiner la mousse par filtrage et de la transformer en crème de mousse.One or more filter elements (10) can be inserted between one end of the outlet duct (9) and the foam reservoir (7). According to a nonlimiting exemplary embodiment, at least one filter element (10) is inserted into the outlet duct (9). According to another variant, a filter element (10) such as a grid, is placed at one end of the outlet duct (9). The filter elements (10) can be in the form of sieves, grids or porous elements. These filtering elements (10) are intended to refine the foam by filtering and turn it into foam cream.

En référence aux figures 2a et 2b, la présence d'éléments filtrants (10) dans le conduit de sortie (9) permet, dans certains cas, de supprimer le dispositif anti retour (11a, 11b) également présent dans ce conduit (9). Ce peut être le cas, par exemple, lorsque le ou les éléments filtrants (10) ont des ouvertures très fines. Dans ce cas, les éléments filtrants (10) créent une forte résistance à l'intérieur du conduit de sortie (9) favorisant le passage du mélange liquide moussant/air à travers l'élément de brassage (6) plutôt que de l'air à travers le conduit de sortie (9) lors de la décompression du moyen de pompage. Ce peut être également le cas lorsque les éléments de filtrage (10) sont nombreux et/ou épais. Comme dans le cas précédent, ils créent à l'intérieur du conduit de sortie (9) une résistance importante.With reference to Figures 2a and 2b , the presence of filter elements (10) in the outlet duct (9) allows, in certain cases, to remove the anti-return device (11a, 11b) also present in this duct (9). This may be the case, for example, when the filter element or elements (10) have very thin openings. In this case, the filter elements (10) create a strong resistance inside the outlet duct (9) favoring the passage of the foaming liquid / air mixture through the brewing element (6) rather than air through the outlet pipe (9) during decompression of the pumping means. This may also be the case when the filter elements (10) are numerous and / or thick. As in the previous case, they create an important resistance inside the outlet duct (9).

La mousse classique se présente sous la forme de bulles d'air assez grossières, de différentes tailles et très aérée. La crème de mousse se présente sous la forme d'une mousse plus homogène que la mousse classique avec des bulles plus régulières et beaucoup plus fines. La crème de mousse forme un produit plus dense et plus compact que la mousse classique. Elle se présente sous la forme d'un fluide beaucoup moins aéré que la mousse classique. Contrairement à la mousse classique, la crème de mousse contient plus de produit moussant que d'air d'où sa consistance se rapprochant de celle d'un gel.The classic foam is in the form of rather coarse air bubbles, of different sizes and very airy. The foam cream is in the form of a foam more homogeneous than the classic foam with more regular bubbles and much thinner. The foam cream forms a product denser and more compact than the classic foam. It is in the form of a fluid much less ventilated than the classic foam. Unlike conventional foam, the foam cream contains more foaming than air from where its consistency approximates that of a gel.

La crème de mousse obtenue sera d'autant plus compacte et avec des bulles d'autant plus fines et régulières que la taille des ouvertures des éléments filtrants (10) seront fines. La qualité de la crème de mousse peut également être améliorée en augmentant le nombre d'éléments filtrants (10). Dans le cas d'une disposition de plusieurs éléments filtrants (10) en série, on peut faire varier progressivement la taille des pores. Suivant le produit à faire mousser utilisé, on commencera par un élément filtrant ayant des pores assez large puis on utilisera des éléments ayant des ouvertures de plus en plus fines. Pour d'autres produits, on agira en sens inverse.The foam cream obtained will be all the more compact and with bubbles even more fine and regular that the size of the openings of the filter elements (10) will be fine. The quality of the foam cream can also be improved by increasing the number of filter elements (10). In the case of an arrangement of several filter elements (10) in series, it is possible to vary the pore size progressively. Depending on the product to be foamed used, we will start with a filter element having fairly large pores and then use elements having openings increasingly fine. For other products, it will act in reverse.

Le dispositif de production de crème de mousse peut également comprendre un système de blocage du moyen de pompage. Ce système pourra par exemple être réalisé par un téton empêchant le déplacement du piston (8a). Le système peut, par exemple, être verrouillé en faisant pivoter le conduit de sortie (9) dans un sens et déverrouillé en le faisant pivoter en sens inverse.The device for producing foam cream may also comprise a blocking system for the pumping means. This system may for example be achieved by a pin preventing movement of the piston (8a). The system can, for example, be locked by pivoting the outlet duct (9) in one direction and unlocked by rotating it in the opposite direction.

La figure 3 présente une autre variante de réalisation du dispositif suivant l'invention. Dans ce mode de réalisation, au moins une partie de l'enveloppe de la réserve de mousse (7) est déformable et forme le moyen de pompage.The figure 3 presents another variant embodiment of the device according to the invention. In this embodiment, at least a part of the envelope of the foam reserve (7) is deformable and forms the pumping means.

Comme dans les exemples de réalisation précédents, le dispositif de production de crème de mousse comprend un conduit d'alimentation (1) en liquide à faire mousser (4) dont une extrémité forme l'entrée du conduit et plonge dans le réservoir (12) de liquide moussant (4). La seconde extrémité du conduit d'alimentation en liquide (1) est en communication avec la chambre de mélange (2). La chambre de mélange (2) assurant le brassage du liquide avec l'air comprend une entrée d'air (5) reliée à un conduit d'alimentation en air (50) et un dispositif anti retour (3a, 3b) évitant au mélange liquide/air de pénétrer dans le réservoir (12) à liquide moussant (4). La chambre de mélange (2) peut également comprendre un ou plusieurs premiers éléments de brassage (6) permettant de préparer une mousse. Suivant un exemple de réalisation non limitatif, le dispositif anti retour (3a, 3b) comprend un élément mobile (3a) comme par exemple une bille ou un pointeau reposant sur un siège sensiblement tronconique (3c) et un dispositif de retenue (3b) limitant la course de l'élément mobile (3a).As in the preceding examples, the device for producing foam cream comprises a supply duct (1) of liquid to be foamed (4), one end of which forms the inlet of the duct and dips into the tank (12). foaming liquid (4). The second end of the liquid supply duct (1) is in communication with the mixing chamber (2). The mixing chamber (2) for mixing the liquid with the air comprises an air inlet (5) connected to an air supply duct (50) and an anti-return device (3a, 3b) avoiding mixing. liquid / air to enter the reservoir (12) foaming liquid (4). The mixing chamber (2) may also comprise one or more first stirring elements (6) for preparing a foam. According to a nonlimiting exemplary embodiment, the anti-return device (3a, 3b) comprises a movable element (3a) such as for example a ball or a needle resting on a substantially frustoconical seat (3c) and a restraining device (3b) limiting the stroke of the movable member (3a).

Selon un mode de réalisation, la chambre de mélange (2) est en communication avec la réserve de mousse (7) par un conduit (20) à l'intérieur de la chambre de mélange (2) et de diamètre inférieur à celui de cette dernière. Ce conduit (20) traverse deux collerettes (11a, 21). Une première collerette (11a) est formée d'une couronne souple comme par exemple une membrane en matière élastique formant un élément mobile. Une seconde collerette (21) est réalisée en matériau rigide et forme une séparation étanche entre la réserve de mousse (7) et la chambre de mélange (2). Dans ce conduit (20) est placé un dispositif anti retour (30a, 30b).According to one embodiment, the mixing chamber (2) is in communication with the foam reserve (7) through a conduit (20) inside the mixing chamber (2) and of smaller diameter than that of this last. This duct (20) passes through two flanges (11a, 21). A first flange (11a) is formed of a flexible crown such as a membrane of elastic material forming a movable member. A second flange (21) is made of rigid material and forms a tight separation between the foam reserve (7) and the mixing chamber (2). In this duct (20) is placed an anti-return device (30a, 30b).

Le dispositif selon l'invention comporte également un conduit de sortie (9) permettant d'extraire et distribuer la crème de mousse et un second dispositif anti retour (11a, 11b). Ce second dispositif anti retour (11a, 11b) pourra par exemple se composé d'un élément mobile (11a) formé par exemple, par une membrane souple en forme de couronne monté sur le conduit (20) présent à l'intérieur de la chambre de mélange (2). Le dispositif anti retour comprend également un dispositif de retenue (11b) n'autorisant l'élément mobile (11a) à se déplacer que dans un sens. Le dispositif de retenue (11b) pourra, par exemple et de façon non limitative, être formé par un anneau ou des ergots insérés ou formés dans la paroi interne de la chambre de mélange (2). Le dispositif de retenue (11b) sert de butée à l'élément mobile, l'empêchant de se déformer dans un sens.The device according to the invention also comprises an outlet duct (9) for extracting and dispensing the foam cream and a second anti-return device (11a, 11b). This second anti-return device (11a, 11b) may for example consist of a movable element (11a) formed for example by a flexible membrane ring-shaped mounted on the conduit (20) present inside the mixing chamber (2). The anti-return device also comprises a retaining device (11b) allowing the movable element (11a) to move only in one direction. The retaining device (11b) may, for example and without limitation, be formed by a ring or lugs inserted or formed in the inner wall of the mixing chamber (2). The retainer (11b) serves as a stop for the movable member, preventing it from deforming in one direction.

Un élément de brassage (6) est monté entre la chambre de mélange (2) et la réserve de mousse (7). Une particularité de ce mode de réalisation est que le mélange air/liquide moussant issu de la chambre de mélange (2) traverse deux fois l'élément de brassage (6). Cet élément de brassage (6) assure donc les deux fonctions de brassage et de filtrage du mélange. Ce mode de réalisation, peut permettre de réduire le nombre de pièces en supprimant l'élément de filtrage (10).A stirring element (6) is mounted between the mixing chamber (2) and the foam reserve (7). A particularity of this embodiment is that the air / foaming liquid mixture from the mixing chamber (2) passes through the brewing element (6) twice. This stirring element (6) thus provides the two mixing and filtering functions of the mixture. This embodiment can reduce the number of parts by removing the filter element (10).

Après avoir pressé le moyen de pompage (8), lorsque l'utilisateur relâche ce dernier, le retour, par élasticité du moyen de pompage (8) vers sa position non comprimé crée à l'intérieur de la réserve de mousse (7) une dépression. Cette dépression tente de soulever l'élément mobile (11a) du dispositif anti retour en communication avec le conduit de sortie (9) mais ce dernier est bloqué par l'élément de retenue (11b) empêchant l'air de pénétrer par le conduit de sortie (9). La dépression provoque également le soulèvement de l'élément mobile (3a) du dispositif anti retour (3a, 3b) présent dans la chambre de mélange (2) et aspire un mélange air/liquide moussant alimenté par le conduit de liquide (1) et l'entrée d'air (5). Ce mélange traverse une première fois l'élément de brassage (6) remplissant la réserve (7) de la mousse ainsi formé.After pressing the pumping means (8), when the user releases the latter, the return, by elasticity of the pumping means (8) to its uncompressed position creates inside the foam reserve (7) a depression. This depression attempts to lift the movable member (11a) of the anti-return device in communication with the outlet duct (9) but the latter is blocked by the retaining element (11b) preventing air from entering through the duct. output (9). The depression also causes the movable element (3a) of the anti-return device (3a, 3b) present in the mixing chamber (2) to rise and draws an air / foaming liquid mixture fed by the liquid conduit (1) and the air inlet (5). This mixture crosses a first time the stirring element (6) filling the reserve (7) of the foam thus formed.

Lorsque l'utilisateur presse de nouveau le moyen de pompage (8), la mousse, présente dans la réserve de mousse (7), est expulsée de cette dernière et traverse de nouveau l'élément de brassage (6) produisant ainsi une crème de mousse par filtrage à travers de l'élément de brassage (6). Une fois expulsée de la réserve de mousse (7) la crème de mousse est bloquée au niveau du dispositif anti retour (30a, 30b) présent dans la chambre de mélange (2) et appuie sur l'élément mobile (11a) du dispositif anti retour (11a, 11b) présent au niveau du conduit de sortie (9) permettant à cette dernière d'être expulsée à travers ledit conduit de sortie (9).When the user again presses the pumping means (8), the foam, present in the foam reserve (7), is expelled from the latter and passes again through the stirring element (6) thus producing a foam cream by filtering through the brewing element (6). Once expelled from the foam reserve (7), the foam cream is blocked at the anti-return device (30a, 30b) present in the mixing chamber (2) and presses against the mobile element (11a) of the anti-backflow device. return (11a, 11b) present at the outlet duct (9) allowing the latter to be expelled through said outlet duct (9).

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 (12)

  1. Device for the production of foam cream capable of being mounted on a rigid reservoir (12) of liquid to be foamed (4) comprising:
    - a liquid supply conduit (1),
    - a mixing chamber (2),
    - at least one non-return device (3a, 3b) disposed in the mixing chamber (2),
    - at least one air supply conduit (50),
    - a foam reserve (7) in communication on the one hand with the mixing chamber (2), and on the other hand with an outlet conduit (9) of the device,
    - at least one mixing element (6), disposed between the mixing chamber (2) and the foam reserve (7) or disposed in the mixing chamber (2),
    - a non-return device (30a, 30b) between the mixing chamber (2) and the foam reserve (7), and
    - a pumping means for ejecting the foam from the foam reserve (7) through the outlet conduit (9),
    the device is characterised in that:
    the pumping means:
    - either being produced by a piston (8a) sliding within the volume of the foam reserve (7),
    - or having at least one deformable part of the wall of the foam reserve,
    - or consisting of the outlet conduit (9) of which one end enters the volume of the foam reserve (7) and is rigidly connected to a displaceable part in said volume of the foam reserve (7),
    the mixing element (6) being a screen, a grid or any other porous element.
  2. Device according to claim 1, characterised in that at least one air supply conduit (50) is formed by the space between two walls, one comprising at least a part of the wall of the mixing chamber (2) and an air inlet (5), and the second one being different to the wall of the liquid reservoir (12).
  3. Device according to claim 1, characterised in that the air supply conduit (50) comprises a groove formed in a part of the body of the device.
  4. Device according to claim 1, characterised in that the air supply conduit (50) is formed by a moulded channel in the body of the device.
  5. Device according to claim 1, characterised in that the air supply conduit (50) is formed by a tube running along at least a part of the wall of the device, connecting an air inlet (5) to the ambient air in a region close to an opening of the reservoir (12) of foaming liquid (4).
  6. Device according to any one of claims 1 to 5, characterised in that the non-return device (30a, 30b) is a ball or needle resting on a substantially frustoconical seat (30c).
  7. Device according to any one of claims 1 to 6, characterised in that the mixing chamber (2) comprises an air inlet (5) connected to the air supply conduit (50).
  8. Device according to any one of claims 1 to 7, characterised in that it comprises at least one filter element (10) between the foam reserve (7) and one end of the outlet conduit (9).
  9. Device according to any one of claims 1 to 8, characterised in that it comprises a non-return device (11a, 11b) between the foam reserve (7) and one end of the outlet conduit (9).
  10. Device according to any one of claims 1 to 9, characterised in that it comprises a device for blocking the pumping means.
  11. Device according to any one of claims 1 to 10, characterised in that the air inlet (5) has a cross-section determined as a function of the cross-section of the conduit for supply of liquid to be foamed (1).
  12. Device according to any one of claims 1 to 11, characterised in that it is held on one end of the reservoir (12) by means of a stopper (13) screwed or clipped onto said reservoir (12), said stopper (13) having an orifice so as to allow passage and sliding of the outlet conduit (9).
EP14193209.5A 2010-05-18 2011-05-17 Device for producing foam cream Active EP2859956B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1053839A FR2960166B1 (en) 2010-05-18 2010-05-18 DEVICE FOR PRODUCING FOAM CREAM
PCT/FR2011/051104 WO2011144861A1 (en) 2010-05-18 2011-05-17 Device for producing foam cream
EP11726877.1A EP2571623B1 (en) 2010-05-18 2011-05-17 Device for producing foam cream

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EP11726877.1A Division EP2571623B1 (en) 2010-05-18 2011-05-17 Device for producing foam cream

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EP2859956B1 true EP2859956B1 (en) 2019-12-11

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GB201509828D0 (en) 2015-06-05 2015-07-22 Rieke Packaging Systems Ltd Foam dispensers
US11246457B2 (en) 2017-11-06 2022-02-15 Gojo Industries, Inc. Double inlet valve for enhanced pump efficiency
AU2018358025B2 (en) * 2017-11-06 2022-11-17 Gojo Industries, Inc. Double inlet valve for enhanced pump efficiency

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US3010613A (en) * 1957-05-03 1961-11-28 Stossel Ernest Foam producing and dispensing device
US4147306A (en) 1977-09-28 1979-04-03 Bennett Robert S Foam producing apparatus
US4156505A (en) 1977-09-28 1979-05-29 Bennett Robert S Device for producing foam
JPH0615891Y2 (en) * 1986-10-31 1994-04-27 高圧化工株式会社 Effervescent liquid dispensing container
FR2641202B1 (en) * 1989-01-03 1991-03-15 Poizot Francis FOAM PRODUCTION DEVICE
JP3217719B2 (en) * 1996-12-26 2001-10-15 株式会社吉野工業所 Foam spouting container
IT1307524B1 (en) * 1999-12-02 2001-11-06 Taplast Spa CAP WITH DISPENSING PUMP.
US6868990B2 (en) 2002-09-26 2005-03-22 Emsar, Inc. Fluid dispenser with shuttling mixing chamber
JP4729569B2 (en) * 2005-06-10 2011-07-20 河野樹脂工業株式会社 Foam ejection container and structure of pump head of the foam ejection container
WO2008133491A1 (en) * 2007-04-26 2008-11-06 Rexam Airspray N.V. Dispensing device

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FR2960166B1 (en) 2014-07-11
EP2571623B1 (en) 2014-11-19
FR2960166A1 (en) 2011-11-25
EP2571623A1 (en) 2013-03-27
EP2859956A1 (en) 2015-04-15
WO2011144861A1 (en) 2011-11-24

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