EP3352915B1 - Check valve - Google Patents

Check valve Download PDF

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Publication number
EP3352915B1
EP3352915B1 EP16795111.0A EP16795111A EP3352915B1 EP 3352915 B1 EP3352915 B1 EP 3352915B1 EP 16795111 A EP16795111 A EP 16795111A EP 3352915 B1 EP3352915 B1 EP 3352915B1
Authority
EP
European Patent Office
Prior art keywords
valve
orifice
deformable
pump
support wall
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
EP16795111.0A
Other languages
German (de)
French (fr)
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EP3352915A1 (en
Inventor
Géry DAMBRICOURT
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CEP TUBES
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CEP TUBES
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Publication of EP3352915A1 publication Critical patent/EP3352915A1/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
    • 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
    • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0072—A valve member forming part of an outlet opening
    • 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
    • B05B11/0075—Two outlet valves being placed in a delivery conduit, one downstream 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
    • B05B11/1001—Piston 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
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
    • 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
    • B05B11/1074—Springs located outside pump chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2031—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure the element being formed by a slit, narrow opening or constrictable spout, the size of the outlet passage being able to be varied by increasing or decreasing the pressure

Definitions

  • the present invention relates to a pump equipped with at least one non-return valve of an airless distribution system also called "airless”, that is to say without air intake so that the product dispensed is never in contact with air before its distribution.
  • airless distribution system also called "airless”
  • This type of airless distribution system is used for the distribution of products which are liable to deteriorate on contact with air. It can be, for example, pharmaceutical products, cosmetic products such as care creams of fluid consistency, that is to say liquid or pasty. As we want to remove the preservatives in creams, it is necessary to protect them from the air.
  • the fluid product is therefore packaged in a shrinkable container so that the volume of the container corresponds precisely at all times of use to the residual quantity of the product that it contains, the product never being in contact with the air at inside the container.
  • the dispenser comprises a pump equipped with an inlet valve and an outlet valve. It is tightly connected to the container and it has at the outlet of the pump an evacuation channel leading to an orifice, the pump being actuated by a push button.
  • the airtightness of the distribution system is ensured by the inlet and outlet valves of the pump.
  • the latter usually consist of complex elements integrating balls or valves, both of which are movable, guides, spring-type support means, opening and closing stops, etc. These complex systems guarantee the tightness of the valve when it is in the closed position and more particularly when the distribution system is at rest.
  • the distribution system is at rest when the pressures inside of the container and inside the pump as well as the atmospheric pressure are identical.
  • the inlet and outlet valves of the pump are then closed and airtight.
  • a traditional pump includes a piston sliding in a cylinder.
  • the piston defines with the inside face of the wall of the cylinder a closed space of variable volume constituting the distribution chamber of the pump.
  • the variation in the volume of said chamber is obtained by means of the reciprocating movement of the piston in the cylinder.
  • the internal face of the cylinder successively constitutes the distribution chamber, then in contact with the outside air, hence the risk of back-contamination through the surfaces sequentially in contact. with air and with cream.
  • the object of the invention is to provide a pump fitted with at least one non-return valve which is perfectly airtight and which presents no risk of back contamination.
  • Another object of the invention is to propose such a pump which is both reliable, simple and inexpensive to manufacture.
  • the valve constitutes the only product passage zone between the container and the distribution chamber or between the distribution chamber and the outside.
  • the combination of the first perforated support wall with the peripheral zone, otherwise called the flexible wall of the valve, closing the orifice of the first support wall by elastic deformation of said zone makes it possible to have a precise, resistant and flexible tight closure.
  • the peripheral zone has a deformation of the flattening type and inducing an elongation consecutive to the abutment of the inner face of the large base on the first bearing wall.
  • the flexible wall has a flattened zone on the side of said large base, constituting the zone of contact with the first bearing wall.
  • the peripheral zone Before deformation, the peripheral zone has a substantially truncated cone shape.
  • the small base has a diameter of 3.34 mm
  • the large base has a diameter of 5.67 mm
  • the wall making an angle of 45 ° with the axis of revolution of said truncated cone and having a thickness of 0.50 mm.
  • the peripheral zone is compressed in the form of a "crushed" truncated cone, the external diameter of the ring passing from 5.67 mm to approximately 6.20 mm, ie an elongation of the material of the order of 9 %.
  • This elongation results from the support of the flexible wall on its large base on the side of its internal face.
  • This elongation induces a considerable bearing force, much greater than a non-elastic deformation, which guarantees the tightness "at rest" and the overpressure of the space located upstream of the valve.
  • the valve remains closed and sealed when the overpressure in the upstream space is less than 40 millibars, preferably less than 100 to 200 millibars, than that of the downstream space which is contiguous to it. Beyond this minimum overpressure, the flexible wall of the valve deforms. The valve is then in the open position and frees the passage from the upstream space to the downstream space.
  • the value of the overpressure in the upstream space to open the valve can be modulated according to the nature of the polymer, the thickness of the wall of the peripheral zone, and the diameter of the valve.
  • the support wall may have several orifices.
  • the system is waterproof after 60 days in an oven at 55 ° C.
  • upstream and downstream are defined in relation to the direction of product distribution.
  • a distribution system comprising the pump according to the invention and a container delimit three spaces, the container, the pump distribution chamber and the exterior.
  • the container is a space located upstream of the pump
  • the distribution chamber the pump is a space located upstream from the outside, relative to the direction of flow of the product.
  • These three spaces are isolated from each other by the watertight barriers which constitute the inlet valve and the outlet valve of the pump.
  • valve according to the invention is perfectly closed and sealed when the pressures in the container, in the pump and outside are approximately identical. Furthermore, one or other of the valves of the invention remains closed and sealed as long as the overpressure in an upstream space relative to the downstream space which is contiguous to it, is less than a threshold previously fixed at the choice of the user industry.
  • the valve is connected to the rigid wall by a fixed non-deformable connection
  • a fixed non-deformable connection means that only part of the valve ensuring the connection to the rigid wall is fixed and not deformable.
  • This fixed part made of flexible polymer, is located in the center of the valve.
  • the flexible peripheral zone extends radially outwards from this fixing zone.
  • the fixing zone will consist of a flexible chimney part of the valve fitted on a rigid rod connected to the rigid wall.
  • the assembly of the flexible chimney and the rigid rod constitutes a fixed non-deformable and sealed assembly.
  • the assembly thus produced can withstand an upstream overpressure greater than 6 bars.
  • the fixing zone cannot carry out any movement in translation, rotation or deformation of any type with respect to the rigid wall.
  • the deformable conduit is compressed and then returns to its initial position under the action of a push button connected to said conduit.
  • the advantage of the deformable conduit is that the internal walls of the conduit constituting the distribution chamber, in contact with the product, are never exposed to the external environment of the pump. Thus, there is no risk of retro-contamination, compared to a traditional pump equipped with a piston sliding in a cylinder.
  • the combination of the deformable conduit and the valve according to the invention thus forms a pump which is perfectly airtight, even in the presence of an overpressure of the space which is contiguous to it, and which does not present a risk of retro-contamination.
  • a pump consisting of a bellows and at least one valve described above, is reliable, simple and inexpensive to manufacture.
  • the inlet valve is a single piece of elastic polymer with shape memory.
  • the deformation of the polymer causes a prestress in the peripheral zone of the valve which keeps it in abutment on the rigid wall when it is in the closed position.
  • the outlet orifice of the deformable conduit is closed by the outlet valve consisting of a second support wall and an outlet valve identical to the inlet valve, connected to the second support wall by a non-deformable fixed link and mounted to bear on said second bearing wall in accordance with the bearing of the inlet valve on the first bearing wall.
  • the deformable conduit is in the form of a bellows.
  • a conduit is simple to produce, for example by an injection molding process.
  • the deformable conduit is with shape memory.
  • the duct alone is sufficient to return to the initial position after the deformation phase.
  • the conduit does not need other return elements, for example a spring, to perform this function. This makes it possible to reduce the number of component parts of the pump, therefore the weight and the manufacturing cost of said pump.
  • the invention also relates to an assembly consisting of a distribution system with at least one of the preceding characteristics assembled with a retractable container mounted on the hoop, by a sealed fixing means.
  • the volume of this type of container corresponds at all times of its use to the residual volume of the product it contains.
  • the retractable container consists of a flexible deformable envelope.
  • the flexible envelope is enclosed in a rigid container perforated by an orifice opening to the outside.
  • the purpose of the rigid container is to allow the user to grip the assembly and to protect the flexible container from accidental damage.
  • the hole drilled at the rigid container allows the entry of air between the wall of the rigid container and that of the flexible component during the retraction thereof.
  • fixed link we mean a link which does not allow any degree of freedom between the elements linked to each other by this link.
  • the above assembly consists of one-piece parts assembled to each other by fixed connections along the flow path of the product packaged in the container. Thanks to the elimination of the sliding elements between all of the above constituents, these parts and this assembly constitute a barrier to retro-contamination which a traditional pump does not offer, made up in part of sliding elements with each other along of said flow path.
  • the pump 1 adapts in an airless distribution system 10 comprising a push button 3 and a hoop 2.
  • the push button 3 is mounted movable in translation relative to the hoop 2 in a vertical direction F1.
  • the pump 1 consists of a deformable duct 6 of the bellows type having an inlet port 61 at the bottom and an outlet port 62 at the top.
  • the inlet 61 and outlet 62 ports are closed by an inlet valve and an outlet valve respectively.
  • the deformable conduit 6 is monobloc to shape memory and the valves have an identical valve.
  • the inlet valve provides the barrier between a container and the distribution chamber 60
  • the outlet valve provides the barrier between the distribution chamber 60 and the outside, the two valves thus delimiting three sealed spaces, one with respect to the other of the container, the distribution chamber 60 and the external atmosphere.
  • the inlet valve consists of an inlet valve 7 supported on a first support wall 23 connected to the hoop 2 while the outlet valve consists of an outlet valve 8 supported on a second support wall 63 connected to the deformable conduit 6 of the pump 1.
  • the first support wall 23 forms with the hoop 2 a single piece.
  • the second bearing wall 63 forms a one-piece assembly with the deformable conduit 6.
  • the inlet valve 7 comprises a flexible peripheral zone 70 and a central fixing means consisting of a chimney 71.
  • the flexible peripheral zone 70 describes a cone of revolution of axis XX, the generatrix of which is approximately a straight line making an angle A with the axis XX of the chimney 71, for example 45 ° ( figure 4 ).
  • the value of the angle A can vary depending on the polymer and the diameter of the inlet valve 7.
  • the preferable angle A combines the largest bearing surface and the greatest bearing force after assembly.
  • the assembly consists in resting the inlet valve 7 on the first wall 23, by fitting the chimney 71 onto a rod 22 belonging to the hoop 2 and substantially perpendicular to the first wall 23.
  • the cone of revolution has a large base 72 and a small base 73, and an inner face 720 on the side inside the cone.
  • the first support wall 23 is perforated with at least one orifice 24 disposed under the inlet valve 7 and allowing the product to be removed from the container.
  • the peripheral zone 70 provides a seal until an overpressure of the upstream zone between 120 and 160 millibars beyond which the peripheral zone 70 will deform to open the valve and allow the product to pass. This value is both sufficient to guarantee the tightness of the valve and sufficiently low to give a pleasant feeling to the user.
  • the outlet valve 8 of the pump has the same characteristics before and after assembly as the inlet valve 7. It has a flexible peripheral zone 80 and a fixing zone constituted by a chimney 81.
  • the cone of revolution has a large base 82 and a small base 83, and an inner face 820 on the inner side of the cone. In a preferred solution, it is strictly identical to the inlet valve 7.
  • the chimney 81 is fitted on a hollow rod 32 belonging to the push button 3, substantially perpendicular to the second support wall 63. The latter is perforated with at least one orifice 64 disposed under the valve. exit 8.
  • the outlet valve therefore has properties identical to the inlet valve.
  • the inlet or outlet valves 7 or 8 can be made of an elastomer of the SEBS, TPP or TEV type.
  • the support wall 63, 35 can be made of high density polyethylene (HDPE), polycarbonate (PC), polypropylene (PP) or acrylonitrile styrene (SAN) and any type of rigid polymer compatible with the packaged product.
  • HDPE high density polyethylene
  • PC polycarbonate
  • PP polypropylene
  • SAN acrylonitrile styrene
  • the deformable duct 6 of the bellows type comprises a side wall 69 made of an accordion.
  • the side wall 69 defines a distribution chamber 60 whose volume is variable.
  • the bottom 65 and top 66 ends of the side wall are respectively connected to a bottom 67 and top 68 fixing ring.
  • the bottom fixing ring 67 is fixedly and tightly fitted onto a cylindrical skirt 21 belonging to the hoop 2
  • the top fixing ring 68 is fixedly and tightly fitted onto a cylindrical skirt 31 of the push button 3.
  • the bottom 67 and top 68 fixing rings, the side wall 69 form a single piece designated as a deformable conduit 6.
  • the push button 3 is pierced with a discharge duct 35 which allows the product to be dispensed.
  • the evacuation duct 35 is arranged downstream of the pump 1.
  • the push button 3 is mobile. The back and forth movement of the push button 3 causes the volume of the dispensing chamber 60 to vary. When the user presses the push button 3, it compresses the deformable conduit 6 and the dispensing chamber 60 decreases in volume, which therefore creates an overpressure in said dispensing chamber 60. The overpressure causes the outlet valve 8 of the outlet valve to open, the volume of the dispensing chamber 60 to be reduced and the product to be evacuated. outside via the evacuation duct 35. When the user releases the push button 3, the deformable duct 6 returns to its initial position under the elastic effect with shape memory of the deformable duct 6, which creates a vacuum in the distribution chamber 60. The vacuum causes the closure of the outlet valve 8 of the outlet valve, the opening of the inlet valve 7 of the inlet valve and the filling of the distribution chamber 60 dep uis the container (not shown in the figure 1 ).
  • the elastic return effect of the deformable conduit can optionally be reinforced by means of a spring disposed outside the flow path.
  • high position we mean the high position of the push button 3 in which the distribution chamber 60 is of maximum volume.
  • the discharge duct 35 is followed by a discharge orifice 36 opening to the outside.
  • a rod 33 with a main axis XX ′ is placed in the center of the discharge orifice 36.
  • the rod 33 forms a single piece with the push button 3 and constitutes a rigid support.
  • the main axis XX ' is the axis of revolution of the rod.
  • the discharge orifice 36 is closed by a nozzle valve.
  • a nozzle valve This consists of a one-piece end valve 9 comprising a hollow cylinder 91, a flexible wall 92 extending radially inward from one end of said cylinder 91.
  • the flexible wall 92 is elastically deformable and includes an opening 93 at its center.
  • the opening 93 of the flexible wall 92 has an approximately circular shape.
  • the end valve 9 is mounted in the discharge orifice 36 by embedding.
  • the cylinder 91 of the valve has an external face 911 bearing on an internal face 361 of the side wall 362 of the discharge orifice 36.
  • the end valve 9 is connected to the discharge orifice 36 by a non-deformable fixed connection.
  • the flexible wall 92 has an inclination directed towards the inside of the end valve 9 before mounting. After mounting, the flexible wall 92 has an angle between approximately 90 ° and 135 ° with the axis xx 'in accordance with the figure 7 .
  • the angle of the flexible wall with the axis xx ' is greater than 90 °, the additional deformation in the open position induces an increase in the diameter of the orifice and therefore an elongation of the flexible wall 92. Said elongation reinforcing the return in the support position after the evacuation of the product and therefore the seal.
  • the deformation of the flexible wall 92 has the effect of bringing said flexible wall 92 to bear on the free end 331 of the rod 33, which makes it possible to seal the discharge orifice 36 when the metered product has been discharged.
  • the pressures upstream and downstream of the valve are then identical.
  • the opening 93 has a diameter d 1 in a plane (P) perpendicular to the axis XX 'and close to the free end 331 of the rod 33.
  • the rod 33 has an approximately circular shape of diameter d 2 in the plane P.
  • the diameter d 1 of the opening 93 is smaller than the diameter d 2 of the rigid support 33 in the plane P.
  • the figure 8 represents a first assembly 100 comprising the distribution system 10 mounted on a rigid container 4.
  • the rigid container 4 envelops a flexible container, here a retractable pocket 5 consisting of a flexible deformable envelope 53.
  • the hoop 2 is fixedly and tightly connected to the retractable pocket 5 by means of a seal 52.
  • An orifice 43 is made in the rigid container 4, preferably at the bottom of the latter, to allow the pocket to shrink during use.
  • the pocket 4 retracts as the product is dispensed.
  • the distribution system 10 is mounted on a flexible skirt 503 fixed to the hoop 2 by a fixing means 502 to form a second assembly 200.
  • the connecting means 502 between the hoop 2 and the flexible skirt 503 also provides sealing of said liaison.
  • the connecting means 502 and the flexible skirt 503 are assembled by welding or by overmolding.
  • the flexible skirt 503 is closed at a low end 505 by welding.
  • a third assembly 300 comprises a distribution system 10 mounted on a container 401 comprising a rigid cylindrical wall 406 and a piston 402 sliding in the cylindrical wall 406.
  • the container 401 is connected to the hoop 2 by a fixed and sealed connection. It further comprises an orifice 403, formed at its bottom wall 404, opening outwards and allowing the displacement of the piston upwards during the filling phase of the distribution chamber 60.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Check Valves (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Safety Valves (AREA)

Description

La présente invention se rapporte à une pompe équipée d'au moins une valve anti-retour d'un système de distribution sans air aussi appelé "airless", c'est-à-dire sans reprise d'air de sorte que le produit distribué n'est jamais en contact avec l'air avant sa distribution. Voir par exemple FR2895734 . Ce type de système de distribution dit airless est utilisé pour la distribution de produits qui sont susceptibles de se détériorer au contact de l'air. Il peut s'agir, par exemple, de produits pharmaceutiques, de produits cosmétiques comme des crèmes de soin de consistance fluide, c'est à dire liquide ou pâteuse. Comme on souhaite supprimer les conservateurs dans les crèmes, il est nécessaire de les protéger de l'air. Le produit fluide est donc conditionné dans un contenant rétractable de sorte que le volume du contenant corresponde précisément à tout moment de l'utilisation à la quantité résiduelle du produit qu'il contient, le produit n'étant jamais en contact avec l'air à l'intérieur du contenant.The present invention relates to a pump equipped with at least one non-return valve of an airless distribution system also called "airless", that is to say without air intake so that the product dispensed is never in contact with air before its distribution. See for example FR2895734 . This type of airless distribution system is used for the distribution of products which are liable to deteriorate on contact with air. It can be, for example, pharmaceutical products, cosmetic products such as care creams of fluid consistency, that is to say liquid or pasty. As we want to remove the preservatives in creams, it is necessary to protect them from the air. The fluid product is therefore packaged in a shrinkable container so that the volume of the container corresponds precisely at all times of use to the residual quantity of the product that it contains, the product never being in contact with the air at inside the container.

De manière classique, le distributeur comprend une pompe équipée d'une valve d'entrée et d'une valve de sortie. Il est relié de façon étanche au contenant et il présente en sortie de la pompe un canal d'évacuation débouchant sur un orifice, la pompe étant actionnée par un bouton poussoir.Conventionally, the dispenser comprises a pump equipped with an inlet valve and an outlet valve. It is tightly connected to the container and it has at the outlet of the pump an evacuation channel leading to an orifice, the pump being actuated by a push button.

L'étanchéité à l'air du système de distribution est assurée par les valves d'entrée et de sortie de la pompe. Ces dernières sont habituellement constituées d'éléments complexes intégrant des billes ou des clapets, l'un et l'autre mobiles, des guidages, des moyens d'appui de type ressort, des butées d'ouverture et de fermeture, etc. Ces systèmes complexes garantissent l'étanchéité de la valve quand elle est en position fermée et plus particulièrement quand le système de distribution est au repos. Le système de distribution est au repos lorsque les pressions à l'intérieur du contenant et à l'intérieur de la pompe ainsi que la pression atmosphérique sont identiques. Les valves d'entrée et de sortie de la pompe sont alors fermées et étanches à l'air.The airtightness of the distribution system is ensured by the inlet and outlet valves of the pump. The latter usually consist of complex elements integrating balls or valves, both of which are movable, guides, spring-type support means, opening and closing stops, etc. These complex systems guarantee the tightness of the valve when it is in the closed position and more particularly when the distribution system is at rest. The distribution system is at rest when the pressures inside of the container and inside the pump as well as the atmospheric pressure are identical. The inlet and outlet valves of the pump are then closed and airtight.

D'autre part, de plus en plus de crèmes sont des émulsions à base aqueuse et les récipients dans lesquels la crème est conditionnée sont par définition fermés de façon étanche. L'eau de ces émulsions a tendance à se transformer en vapeur d'eau dès qu'elle est enfermée dans un récipient clos et que la température est supérieure à 0°C. Le passage de la phase liquide à la phase gazeuse de l'eau crée une surpression dans le contenant. Il est essentiel, lorsque la pompe est au repos, que les valves soient étanches malgré la surpression de l'intérieur du contenant par rapport à la pression atmosphérique.On the other hand, more and more creams are aqueous-based emulsions and the containers in which the cream is packaged are by definition tightly closed. The water in these emulsions tends to turn into water vapor as soon as it is enclosed in a closed container and the temperature is above 0 ° C. The transition from the liquid phase to the gas phase of water creates an overpressure in the container. It is essential, when the pump is at rest, that the valves are sealed despite the overpressure of the interior of the container relative to atmospheric pressure.

Les pompes traditionnelles équipées de ces valves sont donc généralement complexes, parfois fragiles, et composées d'un nombre important de pièces, ce qui en complique la fabrication et en augmente le coût, d'autant que ces composants sont généralement miniaturisés.Traditional pumps fitted with these valves are therefore generally complex, sometimes fragile, and composed of a large number of parts, which complicates their manufacture and increases their cost, especially since these components are generally miniaturized.

Par ailleurs, les pompes traditionnelles peuvent présenter des risques de rétrocontamination. Une pompe traditionnelle comprend un piston coulissant dans un cylindre.In addition, traditional pumps can present risks of back contamination. A traditional pump includes a piston sliding in a cylinder.

Le piston délimite avec la face intérieure de la paroi du cylindre un espace fermé de volume variable constituant la chambre de distribution de la pompe. La variation du volume de ladite chambre est obtenue au moyen du mouvement de va-et-vient du piston dans le cylindre. Pendant ce mouvement de va-et-vient, la face intérieure du cylindre est successivement constitutive de la chambre de distribution, puis en contact avec l'air extérieur, d'où le risque de rétro-contamination par le biais des surfaces séquentiellement en contact avec l'air et avec de la crème.The piston defines with the inside face of the wall of the cylinder a closed space of variable volume constituting the distribution chamber of the pump. The variation in the volume of said chamber is obtained by means of the reciprocating movement of the piston in the cylinder. During this back-and-forth movement, the internal face of the cylinder successively constitutes the distribution chamber, then in contact with the outside air, hence the risk of back-contamination through the surfaces sequentially in contact. with air and with cream.

L'objet de l'invention est de proposer une pompe équipée d'au moins une valve anti-retour qui soit parfaitement étanche à l'air et qui ne présente pas de risque de rétrocontamination.The object of the invention is to provide a pump fitted with at least one non-return valve which is perfectly airtight and which presents no risk of back contamination.

Un autre objectif de l'invention est de proposer une telle pompe qui soit à la fois fiable, simple et peu onéreuse à fabriquer.Another object of the invention is to propose such a pump which is both reliable, simple and inexpensive to manufacture.

A cet effet, l'invention propose une pompe constituée d'un conduit déformable disposant d'un orifice d'entrée obturée par une valve d'entrée, d'un orifice de sortie et d'une valve de sortie. Selon l'invention, la pompe est caractérisée en ce que

  • la valve d'entrée est constituée d'une première paroi d'appui et d'un clapet d'entrée,
  • ledit clapet d'entrée dispose d'une zone périphérique souple et déformable non ajourée, située en vis-à-vis de la première paroi d'appui,
  • la première paroi d'appui est ajourée par au moins un orifice situé en vis-à-vis de la zone périphérique,
  • le clapet d'entrée est relié à la première paroi d'appui par une liaison fixe non déformable,
  • la zone périphérique a une forme sensiblement conique avant assemblage avec une grande base et une petite base et une face intérieure du côté intérieur du cône,
  • ladite zone périphérique présente une déformation consécutive à la mise en appui de la face intérieure de la grande base sur la première paroi d'appui en position assemblée.
To this end, the invention provides a pump consisting of a deformable conduit having an inlet orifice closed by an inlet valve, an outlet orifice and an outlet valve. According to the invention, the pump is characterized in that
  • the inlet valve consists of a first support wall and an inlet valve,
  • said inlet valve has a flexible and deformable non-perforated peripheral zone, located opposite the first support wall,
  • the first bearing wall is perforated by at least one orifice located opposite the peripheral zone,
  • the inlet valve is connected to the first support wall by a non-deformable fixed connection,
  • the peripheral zone has a substantially conical shape before assembly with a large base and a small base and an interior face of the interior side of the cone,
  • said peripheral zone has a deformation consecutive to the abutment of the inner face of the large base on the first support wall in the assembled position.

Le clapet constitue la seule zone de passage du produit entre le contenant et la chambre de distribution ou entre la chambre de distribution et l'extérieur. La combinaison de la première paroi d'appui ajourée avec la zone périphérique, autrement appelé la paroi souple du clapet, fermant l'orifice de la première paroi d'appui par déformation élastique de ladite zone permet d'avoir une fermeture étanche précise, résistante et souple. En effet, en position assemblée, la zone périphérique présente une déformation de type aplatissement et induisant une élongation consécutive à la mise en appui de la face intérieure de la grande base sur la première paroi d'appui. La paroi souple présente une zone aplatie du coté de ladite grande base, constituant la zone de contact avec la première paroi d'appui. Avant déformation, la zone périphérique a une forme sensiblement de tronc de cône. Par exemple, la petite base présente un diamètre de 3,34 mm, la grande base présente un diamètre de 5,67 mm, la paroi faisant un angle de 45° avec l'axe de révolution dudit tronc de cône et disposant d'une épaisseur de 0,50 mm. Après déformation, la zone périphérique est comprimée en forme de tronc de cône « écrasé », le diamètre extérieur de l'anneau passant de 5,67 mm à environ 6,20 mm, soit une élongation de la matière de l'ordre de 9 %. Cette élongation résulte de l'appui de la paroi souple sur sa grande base du côté de sa face interne. Cette élongation induit une force d'appui considérable, bien supérieure à une déformation non élastique, laquelle garantit l'étanchéité « au repos » et à la surpression de l'espace situé en amont de la valve.The valve constitutes the only product passage zone between the container and the distribution chamber or between the distribution chamber and the outside. The combination of the first perforated support wall with the peripheral zone, otherwise called the flexible wall of the valve, closing the orifice of the first support wall by elastic deformation of said zone makes it possible to have a precise, resistant and flexible tight closure. Indeed, in the assembled position, the peripheral zone has a deformation of the flattening type and inducing an elongation consecutive to the abutment of the inner face of the large base on the first bearing wall. The flexible wall has a flattened zone on the side of said large base, constituting the zone of contact with the first bearing wall. Before deformation, the peripheral zone has a substantially truncated cone shape. For example, the small base has a diameter of 3.34 mm, the large base has a diameter of 5.67 mm, the wall making an angle of 45 ° with the axis of revolution of said truncated cone and having a thickness of 0.50 mm. After deformation, the peripheral zone is compressed in the form of a "crushed" truncated cone, the external diameter of the ring passing from 5.67 mm to approximately 6.20 mm, ie an elongation of the material of the order of 9 %. This elongation results from the support of the flexible wall on its large base on the side of its internal face. This elongation induces a considerable bearing force, much greater than a non-elastic deformation, which guarantees the tightness "at rest" and the overpressure of the space located upstream of the valve.

Par exemple, la valve reste fermée et étanche lorsque la surpression dans l'espace amont est inférieure à 40 millibars, de préférence inférieure à 100 à 200 millibars, à celle de l'espace aval qui lui est contigu. Au-delà de cette surpression minimum, la paroi souple du clapet se déforme. La valve est alors en position ouverte et libère le passage de l'espace amont à l'espace aval.For example, the valve remains closed and sealed when the overpressure in the upstream space is less than 40 millibars, preferably less than 100 to 200 millibars, than that of the downstream space which is contiguous to it. Beyond this minimum overpressure, the flexible wall of the valve deforms. The valve is then in the open position and frees the passage from the upstream space to the downstream space.

La valeur de la surpression dans l'espace amont pour ouvrir le clapet pourra être modulée en fonction de la nature du polymère, de l'épaisseur de la paroi de la zone périphérique, et du diamètre de la valve. La paroi d'appui pourra comporter plusieurs orifices. Le système est étanche après 60 jours dans une étuve à 55°C.The value of the overpressure in the upstream space to open the valve can be modulated according to the nature of the polymer, the thickness of the wall of the peripheral zone, and the diameter of the valve. The support wall may have several orifices. The system is waterproof after 60 days in an oven at 55 ° C.

Dans ce document, les termes « en amont » et « en aval » sont définis par rapport au sens de distribution du produit. Par exemple, un système de distribution comportant la pompe selon l'invention et un contenant délimitent trois espaces, le contenant, la chambre de distribution de la pompe et l'extérieur. Le contenant est un espace situé en amont de la pompe, la chambre de distribution la pompe est un espace situé en amont de l'extérieur, par rapport au sens d'écoulement du produit. Ces trois espaces sont isolés les uns des autres par les barrières étanches que constituent la valve d'entrée et la valve de sortie de la pompe.In this document, the terms “upstream” and “downstream” are defined in relation to the direction of product distribution. For example, a distribution system comprising the pump according to the invention and a container delimit three spaces, the container, the pump distribution chamber and the exterior. The container is a space located upstream of the pump, the distribution chamber the pump is a space located upstream from the outside, relative to the direction of flow of the product. These three spaces are isolated from each other by the watertight barriers which constitute the inlet valve and the outlet valve of the pump.

La valve selon l'invention, est parfaitement fermée et étanche lorsque les pressions dans le contenant, dans la pompe et à l'extérieur sont approximativement identiques. Bien plus, l'une ou l'autre des valves de l'invention reste fermée et étanche aussi longtemps que la surpression dans un espace amont par rapport à l'espace aval qui lui est contigu, est inférieure à un seuil préalablement fixé au choix de l'industrie utilisatrice.The valve according to the invention is perfectly closed and sealed when the pressures in the container, in the pump and outside are approximately identical. Furthermore, one or other of the valves of the invention remains closed and sealed as long as the overpressure in an upstream space relative to the downstream space which is contiguous to it, is less than a threshold previously fixed at the choice of the user industry.

Dans la présente description, « le clapet est relié à la paroi rigide par une liaison fixe non déformable » signifie que seulement une partie du clapet assurant la liaison à la paroi rigide est fixe et non déformable. Cette partie fixe, réalisée en polymère souple, est située au centre du clapet. La zone périphérique souple s'étend radialement vers l'extérieur à partir cette zone de fixation.In the present description, "the valve is connected to the rigid wall by a fixed non-deformable connection" means that only part of the valve ensuring the connection to the rigid wall is fixed and not deformable. This fixed part, made of flexible polymer, is located in the center of the valve. The flexible peripheral zone extends radially outwards from this fixing zone.

La zone de fixation sera constituée d'une cheminée souple partie du clapet emmanchée sur une tige rigide reliée à la paroi rigide. L'ensemble de la cheminée souple et de la tige rigide constitue un assemblage fixe non déformable et étanche. L'assemblage ainsi réalisé peut résister à une surpression amont supérieure à 6 bars.The fixing zone will consist of a flexible chimney part of the valve fitted on a rigid rod connected to the rigid wall. The assembly of the flexible chimney and the rigid rod constitutes a fixed non-deformable and sealed assembly. The assembly thus produced can withstand an upstream overpressure greater than 6 bars.

Ainsi, en position assemblée, la zone de fixation ne peut réaliser aucun mouvement en translation, en rotation ou en déformation de quelque type que ce soit par rapport à la paroi rigide.Thus, in the assembled position, the fixing zone cannot carry out any movement in translation, rotation or deformation of any type with respect to the rigid wall.

Le conduit déformable est compressé puis revient à sa position initiale sous l'action d'un bouton-poussoir relié audit conduit. L'avantage du conduit déformable est que les parois internes du conduit constituant la chambre de distribution, au contact avec du produit, ne sont jamais exposées à l'environnement extérieur de la pompe. Ainsi, il n'y a aucun risque de rétro-contamination, comparé à une pompe traditionnelle équipée d'un piston coulissant dans un cylindre.The deformable conduit is compressed and then returns to its initial position under the action of a push button connected to said conduit. The advantage of the deformable conduit is that the internal walls of the conduit constituting the distribution chamber, in contact with the product, are never exposed to the external environment of the pump. Thus, there is no risk of retro-contamination, compared to a traditional pump equipped with a piston sliding in a cylinder.

La combinaison du conduit déformable et de la valve selon l'invention forme ainsi une pompe qui est parfaitement étanche à l'air, même en présence d'une surpression de l'espace qui lui est contiguë, et qui ne présente pas de risque de rétro-contamination. Une telle pompe, constituée d'un soufflet et d'au moins une valve décrits précédemment, est fiable, simple et peu onéreuse à fabriquer.The combination of the deformable conduit and the valve according to the invention thus forms a pump which is perfectly airtight, even in the presence of an overpressure of the space which is contiguous to it, and which does not present a risk of retro-contamination. Such a pump, consisting of a bellows and at least one valve described above, is reliable, simple and inexpensive to manufacture.

Avantageusement, le clapet d'entrée est monobloc en polymère élastique à mémoire de forme. La déformation du polymère entraine une précontrainte dans la zone périphérique du clapet qui le maintient en appui sur la paroi rigide lorsqu'il est en position fermée.Advantageously, the inlet valve is a single piece of elastic polymer with shape memory. The deformation of the polymer causes a prestress in the peripheral zone of the valve which keeps it in abutment on the rigid wall when it is in the closed position.

Avantageusement, l'orifice de sortie du conduit déformable est obturé par la valve de sortie constituée d'une deuxième paroi d'appui et d'un clapet de sortie identique au clapet d'entrée, relié à la deuxième paroi d'appui par une liaison fixe non déformable et monté en appui sur ladite deuxième paroi d'appui conformément à la mise en appui du clapet d'entrée sur la première paroi d'appui. Cette standardisation permet une réduction des coûts de fabrication.Advantageously, the outlet orifice of the deformable conduit is closed by the outlet valve consisting of a second support wall and an outlet valve identical to the inlet valve, connected to the second support wall by a non-deformable fixed link and mounted to bear on said second bearing wall in accordance with the bearing of the inlet valve on the first bearing wall. This standardization allows a reduction in manufacturing costs.

Avantageusement, le conduit déformable est en forme de soufflet. Un tel conduit est simple à réaliser, par exemple par un procédé de moulage par injection.Advantageously, the deformable conduit is in the form of a bellows. Such a conduit is simple to produce, for example by an injection molding process.

Avantageusement, le conduit déformable est à mémoire de forme. Ainsi, le conduit est suffisant à lui seul pour regagner la position initiale après la phase de déformation. Le conduit n'a pas besoin d'autres éléments de rappel, par exemple d'un ressort, pour réaliser cette fonction. Cela permet de réduire le nombre des pièces constitutives de la pompe, donc le poids et le coût de fabrication de ladite pompe.Advantageously, the deformable conduit is with shape memory. Thus, the duct alone is sufficient to return to the initial position after the deformation phase. The conduit does not need other return elements, for example a spring, to perform this function. This makes it possible to reduce the number of component parts of the pump, therefore the weight and the manufacturing cost of said pump.

L'invention concerne également un système de distribution constitué d'une frette, d'un bouton poussoir et d'une pompe selon l'une des caractéristiques précédentes. Selon l'invention, le système de distribution est caractérisé en ce que :

  • la frette est une pièce monobloc, la première paroi d'appui étant partie de ladite frette,
  • le conduit déformable est une pièce monobloc, la deuxième paroi d'appui étant partie dudit conduit déformable,
  • le bouton poussoir est une pièce monobloc intégrant un conduit d'évacuation relié à l'orifice de sortie du conduit déformable et débouchant sur l'orifice d'évacuation du système de distribution.
The invention also relates to a distribution system consisting of a hoop, a push button and a pump according to one of the preceding characteristics. According to the invention, the distribution system is characterized in that:
  • the hoop is a single piece, the first bearing wall being part of said hoop,
  • the deformable duct is a single piece, the second bearing wall being part of said deformable duct,
  • the push button is a single piece integrating an evacuation duct connected to the exit orifice of the deformable conduit and opening onto the evacuation orifice of the distribution system.

Avantageusement, le système de distribution avec au moins une des caractéristiques précédentes est caractérisé en ce que :

  • l'orifice d'évacuation est obturé par une valve d'embout constituée d'un clapet d'embout monobloc logé dans l'orifice d'évacuation et relié à la paroi de l'orifice par une liaison fixe non déformable,
  • le clapet d'embout dispose d'une paroi souple élastiquement déformable obturant l'orifice d'évacuation et présentant une ouverture en son centre, concentrique avec ledit orifice d'évacuation,
  • la paroi souple est montée en appui sur un support rigide d'axe principal XX', ledit support étant partie du bouton poussoir monobloc et disposé au centre de l'orifice en vis-à-vis de l'ouverture.
Advantageously, the distribution system with at least one of the preceding characteristics is characterized in that:
  • the evacuation orifice is closed by a nozzle valve constituted by a one-piece nozzle valve housed in the evacuation orifice and connected to the wall of the orifice by a fixed non-deformable connection,
  • the end valve has a resiliently deformable flexible wall closing the discharge orifice and having an opening in its center, concentric with said discharge orifice,
  • the flexible wall is mounted to bear on a rigid support with a main axis XX ′, said support being part of the one-piece push button and disposed at the center of the orifice opposite the opening.

Avantageusement, le système de distribution avec au moins une des caractéristiques précédentes est caractérisé en ce que :

  • l'ouverture présente une forme approximativement circulaire,
  • le support rigide présente une forme approximativement circulaire dans un plan (P) perpendiculaire à l'axe XX' et voisin de l'extrémité de ledit support rigide,
  • le diamètre de l'ouverture est plus petit que le diamètre du support rigide dans le plan (P).
Advantageously, the distribution system with at least one of the preceding characteristics is characterized in that:
  • the opening has an approximately circular shape,
  • the rigid support has an approximately circular shape in a plane (P) perpendicular to the axis XX 'and close to the end of said rigid support,
  • the diameter of the opening is smaller than the diameter of the rigid support in the plane (P).

L'invention concerne également un ensemble constitué d'un système de distribution avec au moins une des caractéristiques précédentes assemblé avec un contenant rétractable monté sur la frette, par un moyen de fixation étanche. Le volume de ce type de contenant correspond à tout moment de son utilisation au volume résiduel du produit qu'il contient.The invention also relates to an assembly consisting of a distribution system with at least one of the preceding characteristics assembled with a retractable container mounted on the hoop, by a sealed fixing means. The volume of this type of container corresponds at all times of its use to the residual volume of the product it contains.

Avantageusement, le contenant rétractable est constitué d'une enveloppe souple déformable.Advantageously, the retractable container consists of a flexible deformable envelope.

Avantageusement, l'enveloppe souple est enfermée dans un contenant rigide ajouré par un orifice débouchant à l'extérieur. Le contenant rigide a pour objet de permettre la préhension de l'ensemble par l'utilisateur et de protéger le contenant souple de tout endommagement accidentel. L'orifice percé au niveau du contenant rigide permet l'entrée de l'air entre la paroi du contenant rigide et celle du constituant souple lors de la rétraction de celui-ci.Advantageously, the flexible envelope is enclosed in a rigid container perforated by an orifice opening to the outside. The purpose of the rigid container is to allow the user to grip the assembly and to protect the flexible container from accidental damage. The hole drilled at the rigid container allows the entry of air between the wall of the rigid container and that of the flexible component during the retraction thereof.

L'ensemble avec au moins une des caractéristiques précédentes forme un parcours d'écoulement du liquide conditionné dans le contenant constitué :

  • du contenant rétractable relié à la frette;
  • de la frette reliée au conduit déformable et au clapet d'entrée;
  • du conduit déformable relié au clapet de sortie et au bouton poussoir; et
  • du bouton poussoir relié au clapet d'embout.
Ledit ensemble est caractérisé en ce que chaque pièce est monobloc et chacune de ces liaisons est une liaison fixe.The assembly with at least one of the preceding characteristics forms a flow path for the liquid packaged in the container constituted:
  • shrinkable container connected to the hoop;
  • the hoop connected to the deformable conduit and the inlet valve;
  • deformable conduit connected to the outlet valve and the push button; and
  • the push button connected to the end valve.
Said assembly is characterized in that each piece is in one piece and each of these connections is a fixed connection.

Dans la présente description, nous entendons par « liaison fixe » une liaison n'autorisant aucun degré de liberté entre les éléments liés l'un à l'autre par cette liaison. L'ensemble ci-dessus est constitué de pièces monoblocs assemblées les unes aux autres par des liaisons fixes le long du parcours d'écoulement du produit conditionné dans le contenant. Grâce à la suppression des éléments coulissants entre tous les constituants ci-dessus, ces pièces et cet assemblage constituent une barrière à la rétro-contamination que n'offre pas une pompe traditionnelle constituée pour partie d'éléments coulissants les uns avec les autres le long dudit parcours d'écoulement.In the present description, by "fixed link" we mean a link which does not allow any degree of freedom between the elements linked to each other by this link. The above assembly consists of one-piece parts assembled to each other by fixed connections along the flow path of the product packaged in the container. Thanks to the elimination of the sliding elements between all of the above constituents, these parts and this assembly constitute a barrier to retro-contamination which a traditional pump does not offer, made up in part of sliding elements with each other along of said flow path.

D'autres avantages pourront encore apparaître à l'homme du métier à la lecture des exemples ci-dessous, illustrés par les figures annexées, donnés à titre d'exemple :

  • La figure 1 est une coupe d'un système de distribution sans air dont la pompe est équipée d'un conduit déformable de type soufflet, d'une valve d'entrée et d'une valve de sortie selon l'invention,
  • La figure 2 est une coupe de la valve dans une première disposition,
  • La figure 3 est une coupe de la valve dans une deuxième disposition,
  • La figure 4 est une vue en coupe du clapet avant montage,
  • La figure 5 est une vue en coupe du clapet de la figure 4 comprimé après montage,
  • La figure 6 est une vue en coupe d'une valve d'embout avant montage,
  • La figure 7 est une en coupe de la valve d'embout de la figure 6 après montage,
  • La figure 8 est une vue en coupe d'un ensemble comprenant un système de distribution selon la figure 1 monté sur une enveloppe souple enfermée dans un contenant rigide.
  • La figure 9 est une vue coupe d'un ensemble comprenant un système de distribution selon la figure 1 monté sur un tube souple.
  • La figure 10 est une vue en coupe d'un ensemble comprenant un système de distribution selon la figure 1 monté sur un contenant rigide équipé d'un piston.
Other advantages may also appear to those skilled in the art on reading the examples below, illustrated by the appended figures, given by way of example:
  • The figure 1 is a section through an airless distribution system, the pump of which is fitted with a deformable bellows-type duct, an inlet valve and an outlet valve according to the invention,
  • The figure 2 is a section of the valve in a first arrangement,
  • The figure 3 is a section of the valve in a second arrangement,
  • The figure 4 is a sectional view of the valve before assembly,
  • The figure 5 is a sectional view of the valve of the figure 4 compressed after mounting,
  • The figure 6 is a sectional view of a nozzle valve before mounting,
  • The figure 7 is a cross section of the end valve of the figure 6 after mounting,
  • The figure 8 is a sectional view of an assembly comprising a distribution system according to the figure 1 mounted on a flexible envelope enclosed in a rigid container.
  • The figure 9 is a sectional view of an assembly comprising a distribution system according to the figure 1 mounted on a flexible tube.
  • The figure 10 is a sectional view of an assembly comprising a distribution system according to the figure 1 mounted on a rigid container fitted with a piston.

Dans la suite de la description, nous appellerons « haut » le côté où est situé le bouton poussoir et « bas » le côté du contenant.In the following description, we will call "top" the side where the push button is located and "bottom" the side of the container.

La pompe 1 selon l'invention s'adapte dans un système de distribution 10 sans air comportant un bouton poussoir 3 et une frette 2. Le bouton poussoir 3 est monté mobile en translation par rapport à la frette 2 selon une direction verticale F1.The pump 1 according to the invention adapts in an airless distribution system 10 comprising a push button 3 and a hoop 2. The push button 3 is mounted movable in translation relative to the hoop 2 in a vertical direction F1.

Dans l'exemple illustré, la pompe 1 est constituée d'un conduit déformable 6 de type soufflet disposant d'un orifice d'entrée 61 en bas et d'un orifice de sortie 62 en haut. Les orifices d'entrée 61 et de sortie 62 sont obturés respectivement par une valve d'entrée et une valve de sortie. Dans cet exemple, le conduit déformable 6 est monobloc à mémoire de forme et les valves disposent d'un clapet identique.In the example illustrated, the pump 1 consists of a deformable duct 6 of the bellows type having an inlet port 61 at the bottom and an outlet port 62 at the top. The inlet 61 and outlet 62 ports are closed by an inlet valve and an outlet valve respectively. In this example, the deformable conduit 6 is monobloc to shape memory and the valves have an identical valve.

La valve d'entrée assure la barrière entre un contenant et la chambre de distribution 60, la valve de sortie assure la barrière entre la chambre de distribution 60 et l'extérieur, les deux valves délimitant ainsi trois espaces étanches l'un par rapport à l'autre du contenant, de la chambre de distribution 60 et de l'atmosphère extérieure.The inlet valve provides the barrier between a container and the distribution chamber 60, the outlet valve provides the barrier between the distribution chamber 60 and the outside, the two valves thus delimiting three sealed spaces, one with respect to the other of the container, the distribution chamber 60 and the external atmosphere.

En référence aux figures 1 à 5, la valve d'entrée est constituée d'un clapet d'entrée 7 en appui sur une première paroi d'appui 23 reliée à la frette 2 tandis que la valve de sortie est constituée d'un clapet de sortie 8 en appui sur une deuxième paroi d'appui 63 reliée au conduit déformable 6 de la pompe 1. Dans l'exemple illustré, la première paroi d'appui 23 forme avec la frette 2 une pièce monobloc. De la même façon, la deuxième paroi d'appui 63 forme un ensemble monobloc avec le conduit déformable 6. Ainsi, le nombre de pièces nécessaire à la réalisation de la pompe 1 est réduit.With reference to Figures 1 to 5 , the inlet valve consists of an inlet valve 7 supported on a first support wall 23 connected to the hoop 2 while the outlet valve consists of an outlet valve 8 supported on a second support wall 63 connected to the deformable conduit 6 of the pump 1. In the example illustrated, the first support wall 23 forms with the hoop 2 a single piece. In the same way, the second bearing wall 63 forms a one-piece assembly with the deformable conduit 6. Thus, the number of parts necessary for the production of the pump 1 is reduced.

Le clapet d'entrée 7 comprend une zone périphérique souple 70 et un moyen de fixation central constitué d'une cheminée 71. Avant assemblage, la zone périphérique souple 70 décrit un cône de révolution d'axe XX, dont la génératrice est approximativement une droite faisant un angle A avec l'axe XX de la cheminée 71, par exemple 45° (figure 4). La valeur de l'angle A peut varier en fonction du polymère et du diamètre de clapet d'entrée 7. L'angle A préférable combine la plus grande surface d'appui et la plus grande force d'appui après assemblage.The inlet valve 7 comprises a flexible peripheral zone 70 and a central fixing means consisting of a chimney 71. Before assembly, the flexible peripheral zone 70 describes a cone of revolution of axis XX, the generatrix of which is approximately a straight line making an angle A with the axis XX of the chimney 71, for example 45 ° ( figure 4 ). The value of the angle A can vary depending on the polymer and the diameter of the inlet valve 7. The preferable angle A combines the largest bearing surface and the greatest bearing force after assembly.

L'assemblage consiste à mettre en appui le clapet d'entrée 7 sur la première paroi 23, par emmanchement de la cheminée 71 sur une tige 22 appartenant à la frette 2 et sensiblement perpendiculaire à la première paroi 23.The assembly consists in resting the inlet valve 7 on the first wall 23, by fitting the chimney 71 onto a rod 22 belonging to the hoop 2 and substantially perpendicular to the first wall 23.

Le cône de révolution présente une grande base 72 et une petite base 73, et une face intérieure 720 du coté intérieur du cône. Une fois le clapet d'entrée 7 assemblé en position d'appui, soit après écrasement, le clapet d'entrée 7 décrit une forme de révolution dont la génératrice est approximativement un quart de cercle, l'extrémité extérieure de la zone périphérique 70 décrivant un anneau aplati (cf. figure 5) et en appui sur la première paroi d'appui 23, la grande base 72 étant déformée par la mise en appui de sa face intérieure 720 sur la première paroi d'appui 23. Le diamètre extérieur de la grande base passe de 5,67 mm à environ 6,20 mm, soit une élongation de la matière de l'ordre de 9 %. Cette élongation induit une force d'appui considérable, bien supérieure à une déformation non élastique, laquelle garantit l'étanchéité «au repos».The cone of revolution has a large base 72 and a small base 73, and an inner face 720 on the side inside the cone. Once the inlet valve 7 is assembled in the support position, that is to say after being crushed, the inlet valve 7 describes a form of revolution whose generator is approximately a quarter of a circle, the outer end of the peripheral zone 70 describing a flattened ring (cf. figure 5 ) and resting on the first bearing wall 23, the large base 72 being deformed by the bearing of its inner face 720 on the first bearing wall 23. The outside diameter of the large base increases from 5.67 mm to about 6.20 mm, an elongation of the material of the order of 9%. This elongation induces a considerable bearing force, much greater than a non-elastic deformation, which guarantees the seal "at rest".

La première paroi d'appui 23 est perforée d'au moins un orifice 24 disposé sous le clapet d'entrée 7 et permettant de sortir le produit du contenant. La zone périphérique 70 assure une étanchéité jusqu'à une surpression de la zone amont comprise entre 120 et 160 millibars au-delà de laquelle la zone périphérique 70 va se déformer pour ouvrir la valve et laisser passer le produit. Cette valeur est à la fois suffisante pour garantir l'étanchéité de la valve et suffisamment faible pour donner une sensation agréable à l'utilisateur.The first support wall 23 is perforated with at least one orifice 24 disposed under the inlet valve 7 and allowing the product to be removed from the container. The peripheral zone 70 provides a seal until an overpressure of the upstream zone between 120 and 160 millibars beyond which the peripheral zone 70 will deform to open the valve and allow the product to pass. This value is both sufficient to guarantee the tightness of the valve and sufficiently low to give a pleasant feeling to the user.

Le clapet de sortie 8 de la pompe présente les mêmes caractéristiques avant et après assemblage que le clapet d'entrée 7. Il dispose d'une zone périphérique souple 80 et une zone de fixation constituée une cheminée 81. Le cône de révolution présente une grande base 82 et une petite base 83, et une face intérieure 820 du coté intérieur du cône. Dans une solution préférée, il est strictement identique au clapet d'entrée 7. Après assemblage la paroi souple 80 est mise en appui sur la deuxième paroi d'appui 63 appartenant au conduit déformable 6, selon des caractéristiques identiques à la mise en appui de la paroi souple 70 sur la paroi d'appui 23 appartenant à la frette 2. La cheminée 81 est emmanchée sur une tige creuse 32, appartenant au bouton poussoir 3, sensiblement perpendiculaire à la deuxième paroi d'appui 63. Cette dernière est perforée d'au moins un orifice 64 disposé sous le clapet de sortie 8.The outlet valve 8 of the pump has the same characteristics before and after assembly as the inlet valve 7. It has a flexible peripheral zone 80 and a fixing zone constituted by a chimney 81. The cone of revolution has a large base 82 and a small base 83, and an inner face 820 on the inner side of the cone. In a preferred solution, it is strictly identical to the inlet valve 7. After assembly the flexible wall 80 is supported on the second support wall 63 belonging to the deformable conduit 6, according to characteristics identical to the support of the flexible wall 70 on the support wall 23 belonging to the hoop 2. The chimney 81 is fitted on a hollow rod 32 belonging to the push button 3, substantially perpendicular to the second support wall 63. The latter is perforated with at least one orifice 64 disposed under the valve. exit 8.

La valve de sortie dispose donc de propriétés identiques à la valve d'entrée.The outlet valve therefore has properties identical to the inlet valve.

Les clapets d'entrée ou de sortie 7 ou 8 peuvent être en élastomère de type SEBS, TPP ou TEV. La paroi d'appui 63, 35 peut être en polyéthylène haute densité (PEHD), en polycarbonate (PC), en polypropylène (PP) ou en styrène acrylonitrile (SAN) et en tout type de polymère rigide compatible avec le produit conditionné.The inlet or outlet valves 7 or 8 can be made of an elastomer of the SEBS, TPP or TEV type. The support wall 63, 35 can be made of high density polyethylene (HDPE), polycarbonate (PC), polypropylene (PP) or acrylonitrile styrene (SAN) and any type of rigid polymer compatible with the packaged product.

Tel qu'illustré à la figure 1, le conduit déformable 6 de type soufflet comprend une paroi latérale 69 réalisée en accordéon. La paroi latérale 69 délimite une chambre de distribution 60 dont le volume est variable.As illustrated in figure 1 , the deformable duct 6 of the bellows type comprises a side wall 69 made of an accordion. The side wall 69 defines a distribution chamber 60 whose volume is variable.

L'extrémité basse 65 et haute 66 de la paroi latérale sont reliées respectivement à un anneau de fixation bas 67 et haut 68. L'anneau de fixation bas 67 est emmanché de manière fixe et étanche sur une jupe cylindrique 21 appartenant à la frette 2. De la même manière, l'anneau de fixation haut 68 est emmanché de manière fixe et étanche sur une jupe cylindrique 31 du bouton poussoir 3.The bottom 65 and top 66 ends of the side wall are respectively connected to a bottom 67 and top 68 fixing ring. The bottom fixing ring 67 is fixedly and tightly fitted onto a cylindrical skirt 21 belonging to the hoop 2 Likewise, the top fixing ring 68 is fixedly and tightly fitted onto a cylindrical skirt 31 of the push button 3.

Les anneaux de fixation bas 67 et haut 68, la paroi latérale 69 forment une pièce monobloc désigné conduit déformable 6.The bottom 67 and top 68 fixing rings, the side wall 69 form a single piece designated as a deformable conduit 6.

Le bouton poussoir 3 est percé d'un conduit d'évacuation 35 qui permet la distribution du produit. Le conduit d'évacuation 35 est disposé en aval de la pompe 1.The push button 3 is pierced with a discharge duct 35 which allows the product to be dispensed. The evacuation duct 35 is arranged downstream of the pump 1.

Nous allons maintenant décrire le mode de fonctionnement de la pompe 1. Au repos, les deux valves sont fermées, les deux clapets sont en appui sur les parois d'appui 23 et 63, le conduit déformable 6 de la pompe 1 et le bouton poussoir 3 sont reliés fixement.We will now describe the operating mode of pump 1. At rest, the two valves are closed, the two valves are in contact with the walls support 23 and 63, the deformable conduit 6 of the pump 1 and the push button 3 are fixedly connected.

Le bouton poussoir 3 est mobile. Le mouvement d'aller et retour du bouton poussoir 3 entraine une variation de volume de la chambre de distribution 60. En effet, lorsque l'utilisateur appuie sur le bouton poussoir 3, il comprime le conduit déformable 6 et la chambre de distribution 60 diminue en volume, ce qui crée donc une surpression dans ladite chambre de distribution 60. La surpression provoque l'ouverture du clapet de sortie 8 de la valve de sortie, la réduction de volume de la chambre de distribution 60 et l'évacuation du produit à l'extérieur via le conduit d'évacuation 35. Lorsque l'utilisateur relâche le bouton poussoir 3, le conduit déformable 6 revient à sa position initiale sous l'effet élastique à mémoire de forme du conduit déformable 6, ce qui crée une dépression dans la chambre de distribution 60. La dépression provoque la fermeture du clapet de sortie 8 de la valve de sortie, l'ouverture du clapet d'entrée 7 de la valve d'entrée et le remplissage de la chambre de distribution 60 depuis le contenant (non représenté à la figure 1).The push button 3 is mobile. The back and forth movement of the push button 3 causes the volume of the dispensing chamber 60 to vary. When the user presses the push button 3, it compresses the deformable conduit 6 and the dispensing chamber 60 decreases in volume, which therefore creates an overpressure in said dispensing chamber 60. The overpressure causes the outlet valve 8 of the outlet valve to open, the volume of the dispensing chamber 60 to be reduced and the product to be evacuated. outside via the evacuation duct 35. When the user releases the push button 3, the deformable duct 6 returns to its initial position under the elastic effect with shape memory of the deformable duct 6, which creates a vacuum in the distribution chamber 60. The vacuum causes the closure of the outlet valve 8 of the outlet valve, the opening of the inlet valve 7 of the inlet valve and the filling of the distribution chamber 60 dep uis the container (not shown in the figure 1 ).

Par ailleurs, l'effet de retour élastique du conduit déformable peut éventuellement être renforcé au moyen d'un ressort disposé à l'extérieur du parcours d'écoulement.Furthermore, the elastic return effect of the deformable conduit can optionally be reinforced by means of a spring disposed outside the flow path.

Nous entendons par « position haute » la position haute du bouton poussoir 3 dans laquelle la chambre de distribution 60 est de volume maximal.By "high position" we mean the high position of the push button 3 in which the distribution chamber 60 is of maximum volume.

Tel qu'illustré aux figures 1, 6 et 7, le conduit d'évacuation 35 est suivi d'un orifice d'évacuation 36 débouchant vers l'extérieur. Une tige 33 d'axe principal XX' est placée au centre de l'orifice d'évacuation 36. Dans l'exemple illustré, la tige 33 forme une pièce monobloc avec le bouton poussoir 3 et constitue un support rigide. Compte tenu de la géométrie de révolution de la tige 33 dans cet exemple, l'axe principale XX' est l'axe de révolution de la tige.As illustrated in figures 1 , 6 and 7 , the discharge duct 35 is followed by a discharge orifice 36 opening to the outside. A rod 33 with a main axis XX ′ is placed in the center of the discharge orifice 36. In the example illustrated, the rod 33 forms a single piece with the push button 3 and constitutes a rigid support. Taking into account the geometry of revolution of the rod 33 in this example, the main axis XX 'is the axis of revolution of the rod.

L'orifice d'évacuation 36 est obturé par une valve d'embout. Celle-ci est constituée d'un clapet d'embout monobloc 9 comprenant un cylindre creux 91, une paroi souple 92 s'étendant radialement vers l'intérieur depuis une extrémité dudit cylindre 91. La paroi souple 92 est élastiquement déformable et comprend une ouverture 93 en son centre. L'ouverture 93 de la paroi souple 92 présente une forme approximativement circulaire.The discharge orifice 36 is closed by a nozzle valve. This consists of a one-piece end valve 9 comprising a hollow cylinder 91, a flexible wall 92 extending radially inward from one end of said cylinder 91. The flexible wall 92 is elastically deformable and includes an opening 93 at its center. The opening 93 of the flexible wall 92 has an approximately circular shape.

Le clapet d'embout 9 est monté dans l'orifice d'évacuation 36 par encastrement. Dans cette configuration, le cylindre 91 du clapet présente une face extérieure 911 venant en appui sur une face intérieure 361 de la paroi latérale 362 de l'orifice d'évacuation 36. En d'autres termes, le clapet d'embout 9 est relié à l'orifice d'évacuation 36 par une liaison fixe non déformable.The end valve 9 is mounted in the discharge orifice 36 by embedding. In this configuration, the cylinder 91 of the valve has an external face 911 bearing on an internal face 361 of the side wall 362 of the discharge orifice 36. In other words, the end valve 9 is connected to the discharge orifice 36 by a non-deformable fixed connection.

En référence aux figures 6 et 7, la paroi souple 92 présente une inclinaison dirigée vers l'intérieur du clapet d'embout 9 avant montage. Après montage, la paroi souple 92 présente un angle compris entre 90° et 135° approximativement avec l'axe xx' conformément à la figure 7. Lorsque l'angle de la paroi souple avec l'axe xx' est supérieure à 90°, la déformation supplémentaire en position ouverte induit une augmentation du diamètre de l'orifice et donc une élongation de la paroi souple 92. Ladite élongation renforçant le retour en position d'appui après l'évacuation du produit et donc l'étanchéité. Précisément, après montage, la déformation de la paroi souple 92 a pour effet de mettre en appui ladite paroi souple 92 sur l'extrémité libre 331 de la tige 33, ce qui permet d'assurer l'étanchéité de l'orifice d'évacuation 36 lorsque le produit dosé a été évacué. Les pressions en amont et en aval du clapet sont alors identiques.With reference to figures 6 and 7 , the flexible wall 92 has an inclination directed towards the inside of the end valve 9 before mounting. After mounting, the flexible wall 92 has an angle between approximately 90 ° and 135 ° with the axis xx 'in accordance with the figure 7 . When the angle of the flexible wall with the axis xx 'is greater than 90 °, the additional deformation in the open position induces an increase in the diameter of the orifice and therefore an elongation of the flexible wall 92. Said elongation reinforcing the return in the support position after the evacuation of the product and therefore the seal. Specifically, after mounting, the deformation of the flexible wall 92 has the effect of bringing said flexible wall 92 to bear on the free end 331 of the rod 33, which makes it possible to seal the discharge orifice 36 when the metered product has been discharged. The pressures upstream and downstream of the valve are then identical.

L'ouverture 93 présente un diamètre d1 dans un plan (P) perpendiculaire à l'axe XX' et voisin de l'extrémité libre 331 de la tige 33. Pareillement, la tige 33 présente une forme approximativement circulaire de diamètre d2 dans le plan P. Le diamètre d1 de l'ouverture 93 est plus petit que le diamètre d2 du support rigide 33 dans le plan P.The opening 93 has a diameter d 1 in a plane (P) perpendicular to the axis XX 'and close to the free end 331 of the rod 33. Similarly, the rod 33 has an approximately circular shape of diameter d 2 in the plane P. The diameter d 1 of the opening 93 is smaller than the diameter d 2 of the rigid support 33 in the plane P.

Le principe de fonctionnement de la valve d'embout dans le système de distribution 10 est expliqué ci-après. Au repos, c'est-à-dire quand aucune action n'a lieu sur le clapet d'embout 9, la paroi souple 92 est en appui sur l'extrémité libre 331 de la tige 33, la pression étant sensiblement identique des deux côtés de ladite paroi 92, et la valve d'embout formant une barrière étanche en position fermée. Quand l'utilisateur appuie sur le bouton poussoir 3, la pression du produit contenu dans la pompe 1 et le conduit d'évacuation 35 augmente jusqu'à provoquer le soulèvement de la paroi souple 92.The operating principle of the end valve in the distribution system 10 is explained below. At rest, that is to say when no action takes place on the end valve 9, the flexible wall 92 is in abutment on the free end 331 of the rod 33, the pressure being substantially identical for the two sides of said wall 92, and the end valve forming a tight barrier in the closed position. When the user presses the push button 3, the pressure of the product contained in the pump 1 and the evacuation duct 35 increases until the flexible wall 92 is raised.

La figure 8 représente un premier ensemble 100 comprenant le système de distribution 10 monté sur un contenant rigide 4. Dans l'exemple illustré, le contenant rigide 4 enveloppe un contenant souple, ici une poche rétractable 5 constituée d'une enveloppe souple déformable 53.The figure 8 represents a first assembly 100 comprising the distribution system 10 mounted on a rigid container 4. In the example illustrated, the rigid container 4 envelops a flexible container, here a retractable pocket 5 consisting of a flexible deformable envelope 53.

La frette 2 est reliée de manière fixe et étanche à la poche rétractable 5 moyennant un joint d'étanchéité 52. Un orifice 43 est pratiqué dans le contenant rigide 4, de préférence à en partie basse de ce dernier, pour permettre à la poche de se rétracter pendant l'utilisation. La poche 4 se rétracte au fur et à mesure de la distribution du produit.The hoop 2 is fixedly and tightly connected to the retractable pocket 5 by means of a seal 52. An orifice 43 is made in the rigid container 4, preferably at the bottom of the latter, to allow the pocket to shrink during use. The pocket 4 retracts as the product is dispensed.

Tel qu'illustré à la figure 9, le système de distribution 10 est monté sur une jupe souple 503 fixée à la frette 2 par un moyen de fixation 502 pour former un deuxième ensemble 200. Le moyen de liaison 502 entre la frette 2 et la jupe souple 503 assure également l'étanchéité de ladite liaison. Le moyen de liaison 502 et la jupe souple 503 sont assemblés par soudure ou par surmoulage. La jupe souple 503 est fermée à une extrémité basse 505 par soudage.As illustrated in figure 9 , the distribution system 10 is mounted on a flexible skirt 503 fixed to the hoop 2 by a fixing means 502 to form a second assembly 200. The connecting means 502 between the hoop 2 and the flexible skirt 503 also provides sealing of said liaison. The connecting means 502 and the flexible skirt 503 are assembled by welding or by overmolding. The flexible skirt 503 is closed at a low end 505 by welding.

Sur la figure 10, un troisième ensemble 300 comprend un système de distribution 10 monté sur un contenant 401 comprenant une paroi rigide cylindrique 406 et un piston 402 coulissant dans la paroi cylindrique 406. Le contenant 401 est relié à la frette 2 par une liaison fixe et étanche. Il comporte en outre un orifice 403, pratiqué au niveau de sa paroi de fond 404, débouchant vers l'extérieur et permettant le déplacement du piston vers le haut lors de la phase de remplissage de la chambre de distribution 60.On the figure 10 , a third assembly 300 comprises a distribution system 10 mounted on a container 401 comprising a rigid cylindrical wall 406 and a piston 402 sliding in the cylindrical wall 406. The container 401 is connected to the hoop 2 by a fixed and sealed connection. It further comprises an orifice 403, formed at its bottom wall 404, opening outwards and allowing the displacement of the piston upwards during the filling phase of the distribution chamber 60.

Claims (11)

  1. Pump (1) constituted of a deformable conduit (6) having an inlet orifice (61) blocked by an inlet valve, an outlet orifice (62) and an outlet valve, said pump (1) being characterised in that
    - the inlet valve is constituted of a first support wall (23) and an inlet valve (7),
    - said inlet valve has a non-perforated flexible and deformable peripheral zone (70), located opposite the first support wall (23),
    - the first support wall (23) is perforated by at least one orifice (24) located opposite the peripheral zone (70),
    - the inlet valve (7) is connected to the first support wall (23) by a fixed, non-deformable connection,
    - the peripheral zone (70) has a substantially conic shape before assembly, with a large base (72) and a small base (73) and an inner face (720) on the inner side of the cone,
    - said peripheral zone (70) has a deformation consecutive to supporting the inner face (720) of the large base on the first support wall (23) in the assembled position.
  2. Pump according to claim 1, characterised in that the inlet valve (7) is one-piece made of shape memory elastic polymer.
  3. Pump (1) according to claim 1 or claim 2, characterised in that the outlet orifice (62) is blocked by the outlet valve constituted of a second support wall (63) and an outlet valve (8) identical to the inlet valve (7), connected to the second support wall (63) by a fixed, non-deformable connection, and mounted bearing on said second support wall (63) according to the bearing of the inlet valve (7) on the first support wall (23).
  4. Pump (1) according to one of claims 1 to 3, characterised in that the deformable conduit (6) is gusset-shaped.
  5. Pump (1) according to one of claims 1 to 4, characterised in that the deformable conduit (6) is with shape memory.
  6. Distribution system (10) constituted of a fret (2), a pushbutton (3) and a pump (1) according to one of claims 1 to 5, characterised in that:
    - the fret (2) is a one-piece part, the first support wall (23) forming part of said fret (2),
    - the deformable conduit (6) is a one-piece part, the second support wall (63) forming part of said deformable conduit (6),
    - the pushbutton is a one-piece part integrating an evacuation conduit (35) connected to the outlet orifice (62) of the deformable conduit (6) and opening onto the evacuation orifice (36) of the distribution system (10).
  7. Distribution system (10) according to claim 6, characterised in that:
    - the evacuation orifice (36) is blocked by a nozzle valve constituted of a one-piece nozzle valve (9) housed in the evacuation orifice (36) and connected to the wall (362) of the orifice (36) by a fixed, non-deformable connection,
    - the nozzle valve (9) has an elastically deformable flexible wall (92) blocking the evacuation orifice (36) and having an opening (93) at the centre thereof, concentric with said evacuation orifice (36),
    - the flexible wall (92) is mounted bearing on a rigid support (33) of main axis XX', said support forming part of the one-piece pushbutton (3) and arranged at the centre of the orifice (36) opposite the opening (93).
  8. Assembly characterised in that it is constituted of a distribution system (10) according to one of claims 6 or 7 assembled with a retractable container (5; 503; 401) mounted on the fret (2) by a sealed fixing means.
  9. Assembly according to claim 8, characterised in that the retractable container (5; 501) is constituted of a deformable flexible casing (53; 503).
  10. Assembly according to claim 9, characterised in that the flexible casing (53) is confined in a rigid container (4) perforated by an orifice (43) opening outwards.
  11. Assembly according to one of claims 8 or 9, forming a flow path of the liquid packaged in the container constituted of:
    - the retractable container (5; 503; 401) connected to the fret (2);
    - the fret (2) connected to the deformable conduit (6) and to the inlet valve (7);
    - the deformable conduit (6) connected to the outlet valve (8) and to the pushbutton (3); and
    - the pushbutton connected to the nozzle valve (9);
    the assembly being characterised in that each part is one-piece and each of these connections is a fixed connection.
EP16795111.0A 2015-09-22 2016-09-22 Check valve Active EP3352915B1 (en)

Applications Claiming Priority (3)

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FR1558944A FR3041409A1 (en) 2015-09-22 2015-09-22 VALVE ANTI-RETURN WATERPROOF
FR1560099A FR3041412B1 (en) 2015-09-22 2015-10-22 VALVE ANTI-RETURN WATERPROOF
PCT/FR2016/000147 WO2017051086A1 (en) 2015-09-22 2016-09-22 Non-return valve

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EP3352915A1 EP3352915A1 (en) 2018-08-01
EP3352915B1 true EP3352915B1 (en) 2020-05-20

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CN (1) CN109070115B (en)
FR (2) FR3041409A1 (en)
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Also Published As

Publication number Publication date
EP3352912A1 (en) 2018-08-01
EP3352915A1 (en) 2018-08-01
US10569285B2 (en) 2020-02-25
FR3041412B1 (en) 2018-04-20
CN109070115A (en) 2018-12-21
US20190076862A1 (en) 2019-03-14
FR3041412A1 (en) 2017-03-24
EP3352912B1 (en) 2020-05-13
WO2017051086A1 (en) 2017-03-30
CN109070115B (en) 2021-10-29
FR3041409A1 (en) 2017-03-24
WO2017051125A1 (en) 2017-03-30

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