EP1687097B1 - Pump for distributing a fluid product - Google Patents

Pump for distributing a fluid product Download PDF

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Publication number
EP1687097B1
EP1687097B1 EP04805805A EP04805805A EP1687097B1 EP 1687097 B1 EP1687097 B1 EP 1687097B1 EP 04805805 A EP04805805 A EP 04805805A EP 04805805 A EP04805805 A EP 04805805A EP 1687097 B1 EP1687097 B1 EP 1687097B1
Authority
EP
European Patent Office
Prior art keywords
pump
piston
chamber
pump chamber
pump according
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.)
Expired - Fee Related
Application number
EP04805805A
Other languages
German (de)
French (fr)
Other versions
EP1687097A2 (en
Inventor
François LE MANER
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.)
Aptar France SAS
Original Assignee
Valois SAS
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Filing date
Publication date
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Publication of EP1687097A2 publication Critical patent/EP1687097A2/en
Application granted granted Critical
Publication of EP1687097B1 publication Critical patent/EP1687097B1/en
Expired - Fee Related 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
    • 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
    • B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
    • 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
    • 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
    • B05B11/1061—Pump priming means
    • B05B11/1063—Air exhausted from the pump chamber being discharged into the container during priming
    • 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

Definitions

  • the present invention relates to a fluid dispenser pump and a fluid dispenser device comprising such a pump.
  • Fluid dispensing pumps are well known in the state of the art, in particular for dispensing products in the fields of cosmetics, perfumery or pharmacy. They generally comprise a piston sliding in a pump body, more particularly in a pump chamber provided in this pump body, and adapted to dispense a dose of fluid product with each actuation of the pump.
  • the pump chamber generally comprises an inlet valve to enable the dose of product expelled to be defined at each actuation.
  • some pumps sometimes incorporate shutters at the dispensing orifice, to prevent contamination of the product between two actuations.
  • a problem with this type of pump is priming. Indeed, before the first actuation of the pump, the pump chamber is filled with air, and it is therefore necessary to expel this air completely to allow filling of said pump chamber with fluid and allow dosing accurate and reproducible with each actuation of the pump. Priming is made all the more complicated as the pump has a shutter. It is difficult to expel the air contained in the pump chamber out of it, in particular because of the presence of said shutter.
  • the present invention aims to provide a fluid dispensing pump that does not reproduce the aforementioned drawbacks.
  • Another object of the present invention is to provide a fluid dispenser pump which guarantees a spray spray each time the pump is actuated, regardless of the force that the user exerts on it when it is actuated.
  • the present invention also aims to provide a fluid dispenser pump that is simple and inexpensive to manufacture and assemble.
  • the present invention therefore relates to a fluid dispenser pump comprising a pump body, a pump chamber, at least a first piston sliding in said pump chamber for dispensing the fluid, a dispensing orifice and a displaceable shutter. and / or deformable between a closed position of the dispensing orifice and an opening position of the dispensing orifice, said pump chamber comprising an inlet valve separating the pump chamber from a plunger tube. extending to a fluid reservoir, a bypass passage being provided between said dip tube and said pump chamber, said bypass passage being disposed upstream of said inlet valve, said bypass passage connecting the pump chamber to the tube diver when priming the pump.
  • the pump body is made of a one-piece piece with said shutter.
  • the inlet valve comprises a valve seat integral with the first piston and a valve element, said first piston sliding in a sealed manner in said pump body, said pump body having an opening cooperating with the first piston during the first piston. priming to open said bypass passage and allow the discharge of the air contained in the pump chamber before the first actuation through the dip tube in the tank.
  • said pump comprises a dispensing head incorporating said dispensing orifice.
  • said shutter comprises a second piston cooperating sealingly with the head in any position, and a third piston movable relative to said head between a sealed position and an open position, said third piston separating the metering chamber in two parts, a first metering chamber portion disposed between the obturator and said third piston and a second metering chamber portion disposed between said third piston and said second piston.
  • said second portion of the pump chamber is connected to said bypass passage.
  • part of the product contained in said pump chamber can be forced back to through said bypass passage in the dip tube and in the reservoir.
  • said second portion of the pump chamber is connected to said bypass passage by a passage provided between said second and third pistons.
  • said second and third pistons are made integrally.
  • said second piston is made integrally with said shutter.
  • said shutter is biased elastically, in particular by a spring, towards its closed position and is moved and / or deformed towards its open position by the pressure of the product contained in the pump chamber.
  • the shutter moves and / or is deformed axially with respect to said pump body, said third piston being brought into the open position from a displacement and / or a predetermined axial deformation of said shutter.
  • valve element is a ball.
  • a single spring urges said first piston towards its rest position and said shutter towards its closed position.
  • said spring is out of contact with the fluid product.
  • said first piston and said valve seat are made integrally with a fastening element such as a snap ring, crimpable or screwable, adapted to fix said pump on a fluid reservoir.
  • a fastening element such as a snap ring, crimpable or screwable
  • the present invention also relates to a fluid dispenser device comprising a fluid reservoir and a pump as described above.
  • the dispensing pump comprises a pump body 10 in which at least a first piston 72 slides.
  • This first piston 30 partially defines a pump chamber 20 and the actuation of the pump causes the dispensing a dose of product contained in the pump chamber 20 through a dispensing orifice 45, preferably formed in a dispensing head 40.
  • the pump comprises a shutter 38, arranged directly upstream of the dispensing orifice 45 and cooperating with it by being displaceable and / or deformable between a closed position of the dispensing orifice 45 and an open position thereof.
  • the pump chamber comprises an inlet valve 70, which may be in the form of a ball 75 forming a valve element and cooperating with a valve seat 71.
  • the pump body 10 is preferably formed of a one-piece piece with the shutter 38, inside thereof.
  • the piston 72 and the valve seat 71 are integral with a part which incorporates a fixing ring 15 adapted to fix the pump on a reservoir 60 containing the fluid, advantageously with the interposition of a seal 65.
  • a dip tube 18, intended to extend to the bottom of the tank 60 to distribute all of the product that it contains, can also be made in one piece with said fixing ring member 15, piston 72 and valve seat. 71.
  • Valve member 75 is shown as a ball, but could be made differently.
  • a bypass passage 74 is provided between the plunger tube 18 and the pump chamber 20, upstream of the inlet valve 70.
  • This bypass passage 74 connects the pump chamber 20 to the plunger tube 18 when priming the pump. pump.
  • this bypass passage 74 can be realized in the form a lateral bore made in the valve seat 71 upstream of the valve member 75.
  • the valve seat 71 is then advantageously arranged upstream of the first piston 72, which slides in a sealed manner in said pump body, that it has an opening 32 adapted to cooperate with said first piston 72 during priming.
  • This priming position is shown in particular in FIG. 2. It can be seen that when the user actuates the pump for the first time and that the latter contains air in the pump chamber 20, the air is compressed.
  • a passage is created between the pump chamber 20 and the bypass passage 74, which allows the expulsion the air contained in the pump chamber 20 to the plunger tube 18 and thus in the reservoir 60 as represented by arrows A and B in FIG. 2.
  • the product fluid is sucked into the pump chamber 20 and thereafter the first piston 72 will not be able to reach said pump body opening 30 during normal operation of the pump, i.e. during dispensing of the product, but only at the end of the actuation.
  • Said inlet valve 70 then operates in a conventional manner to close during actuation and open when the pump is returned to its rest position.
  • the pump has only one spring 50 adapted to return the first piston 72 to its rest position and the shutter 38 to its closed position after each actuation.
  • This spring 50 is advantageously out of contact with the fluid, which eliminates any risk of alteration of the fluid in question.
  • the shutter 38 slides axially between its open and closed positions in a sleeve 150 provided in the bottom of the actuating head 40.
  • a spraying profile (not shown) is preferably produced in said sleeve for allow a swirling of the product at the time of its expulsion, to form a spray.
  • the pump provides means for decreasing this pressure in the pump chamber 20 during actuation to allow the shutter 38 to remain at a distance sufficiently close to the dispensing orifice 45 to achieve a good quality spray.
  • These means comprise second and third pistons 34, 35, preferably made integrally with said shutter 40. Said second piston 34 slides in a sealed manner in the head 40, between a sealed position and an open position.
  • This third piston 35 separates the pump chamber 20 into a first pump chamber portion 21, disposed upstream of the dispensing orifice 45 and a second pump chamber portion 23, located between said second piston 34 and said third piston 35.
  • Said third piston 35 slides in parts 11, 13 of the head 40 which may have different diameters.
  • the third piston 35 can cooperate with a reduced diameter head portion 11 which is extended by a head portion 13 of larger diameter.
  • the head portion 11 may comprise one or more vent grooves for opening the passage between the two pump chamber portions 21, 23 from a predetermined position of said third piston 31.
  • a passage 33 is provided between said second and third pistons 34, 35 at said second pump chamber portion 23, said passage 33 being connected to the bypass passage 74, and therefore to the dip tube 18 and the reservoir 60
  • the pressure in the pump chamber 20 rises very rapidly, and this pressure rapidly displaces the shutter 38
  • the third piston 35 being integral with the shutter 38, it moves at the same time as the latter. After a predetermined axial displacement of said shutter 38, said third piston 35 reaches its open position, so that the overpressure created in the first pump chamber portion 21 is transmitted to said second pump chamber portion 23.
  • the bypass passage 74 provided upstream of the inlet valve 70 of the pump chamber 20 thus provides a dual function, namely on the one hand an air discharge passage during priming, and secondly a product discharge passage during certain actuations, to ensure a good spraying of the product.
  • the plunger tube 18 is not necessarily integral or made in one piece with the fixing element 15 which fixes the pump on the reservoir 60.
  • the shapes of the shutter 38, the pump body 10 , the piston 72, the inlet valve 70 of the pump chamber 20 or the other elements could be made differently if necessary.
  • Other modifications are also conceivable for those skilled in the art without departing from the scope of the present invention as defined by the appended claims.

Abstract

The invention concerns a pump for distributing a fluid product comprising: a pump body (10); a pump chamber (20); at least one first piston (72) sliding inside said pump chamber (20) for distributing the fluid product; a distribution orifice (45); an obturator (38) that can be displaced and/or deformed between a closed position of the distribution orifice (45) and an open position of the distribution orifice (45), said chamber comprising an inlet valve (70) separating the pump chamber (20) from a dip tube (18) extending toward a fluid product reservoir (60), and; a bypass passage (74) provided between said dip tube (18) and the pump chamber (20), said bypass passage (74) being placed upstream from the inlet valve (70) and connecting the pump chamber (20) to the dip tube (18) when the pump is primed.

Description

La présente invention concerne une pompe de distribution de produit fluide et un dispositif de distribution de produit fluide comportant une telle pompe.The present invention relates to a fluid dispenser pump and a fluid dispenser device comprising such a pump.

Les pompes de distribution de produit fluide sont bien connues dans l'état de la technique, notamment pour distribuer des produits dans les domaines de la cosmétique, de la parfumerie ou de la pharmacie. Elles comportent généralement un piston coulissant dans un corps de pompe, plus particulièrement dans une chambre de pompe prévue dans ce corps de pompe, et adapté à distribuer une dose de produit fluide à chaque actionnement de la pompe. La chambre de pompe comporte généralement un clapet d'entrée pour permettre de définir la dose de produit expulsée à chaque actionnement. Par ailleurs, notamment avec les produits pharmaceutiques, certaines pompes incorporent parfois des obturateurs au niveau de l'orifice de distribution, pour éviter toute contamination du produit entre deux actionnements. Ces caractéristiques sont connues du document US 5 881 925.Fluid dispensing pumps are well known in the state of the art, in particular for dispensing products in the fields of cosmetics, perfumery or pharmacy. They generally comprise a piston sliding in a pump body, more particularly in a pump chamber provided in this pump body, and adapted to dispense a dose of fluid product with each actuation of the pump. The pump chamber generally comprises an inlet valve to enable the dose of product expelled to be defined at each actuation. Moreover, especially with pharmaceutical products, some pumps sometimes incorporate shutters at the dispensing orifice, to prevent contamination of the product between two actuations. These characteristics are known from US 5,881,925.

Un problème qui se pose avec ce type de pompe concerne l'amorçage. En effet, avant le premier actionnement de la pompe, la chambre de pompe est remplie d'air, et il est donc nécessaire d'expulser cet air en totalité pour permettre un remplissage de ladite chambre de pompe avec du produit fluide et permettre un dosage précis et reproductible à chaque actionnement de la pompe. L'amorçage est rendu d'autant plus compliqué que la pompe comporte un obturateur. Il est difficile d'expulser l'air contenu dans la chambre de pompe hors de celle-ci, notamment en raison de la présence dudit obturateur.A problem with this type of pump is priming. Indeed, before the first actuation of the pump, the pump chamber is filled with air, and it is therefore necessary to expel this air completely to allow filling of said pump chamber with fluid and allow dosing accurate and reproducible with each actuation of the pump. Priming is made all the more complicated as the pump has a shutter. It is difficult to expel the air contained in the pump chamber out of it, in particular because of the presence of said shutter.

Un autre problème qui peut se poser avec les pompes de distribution de produit fluide concerne la qualité du spray, lorsqu'il s'agit d'une pompe de pulvérisation. En effet, particulièrement lorsqu'il y a un obturateur prévu au niveau de l'orifice de distribution, la qualité et les caractéristiques du spray au moment de l'expulsion sont dépendantes dudit obturateur. Or, la plupart de ces obturateurs étant déplacés par la pression du produit créée lors de l'actionnement, des actionnements avec des intensités ou des forces axiales différentes peuvent provoquer des modifications au niveau des caractéristiques du spray. En particulier dans les pompes dans lesquelles l'obturateur se déplace axialement en éloignement de l'orifice de distribution lors de l'actionnement de la pompe, un déplacement trop important dudit obturateur risque de provoquer une perte de qualité du spray, et par conséquent une mauvaise distribution de la dose.Another problem that may arise with fluid dispensing pumps is the quality of the spray, when it is a spray pump. Indeed, particularly when there is a shutter provided at the dispensing orifice, the quality and characteristics of the spray at the time of expulsion are dependent on said shutter. However, most of these shutters being displaced by the pressure of the product created during actuation, actuations with intensities or axial forces may cause changes in the characteristics of the spray. In particular in pumps in which the shutter moves axially away from the dispensing orifice during the actuation of the pump, excessive displacement of said shutter may cause a loss of quality of the spray, and therefore a poor dose distribution.

La présente invention a pour but de fournir une pompe de distribution de produit fluide qui ne reproduit pas les inconvénients susmentionnés.The present invention aims to provide a fluid dispensing pump that does not reproduce the aforementioned drawbacks.

Plus particulièrement, la présente invention a pour but de fournir une pompe de distribution de produit fluide qui permet de réaliser un amorçage sûr et fiable de manière simple et peu coûteuse.More particularly, it is an object of the present invention to provide a fluid dispensing pump which provides safe and reliable priming in a simple and inexpensive manner.

La présente invention a également pour but de fournir une pompe de distribution de produit fluide qui garantit un spray de pulvérisation à chaque actionnement de la pompe, indépendamment de la force que l'utilisateur exerce sur celle-ci lors de son actionnement.Another object of the present invention is to provide a fluid dispenser pump which guarantees a spray spray each time the pump is actuated, regardless of the force that the user exerts on it when it is actuated.

La présente invention a aussi pour objet de fournir une pompe de distribution de produit fluide qui soit simple et peu coûteuse à fabriquer et à assembler.The present invention also aims to provide a fluid dispenser pump that is simple and inexpensive to manufacture and assemble.

La présente invention a donc pour objet une pompe de distribution de produit fluide comportant un corps de pompe, une chambre de pompe, au moins un premier piston coulissant dans ladite chambre de pompe pour distribuer le produit fluide, un orifice de distribution et un obturateur déplaçable et/ou déformable entre une position d'obturation de l'orifice de distribution et une position d'ouverture de l'orifice de distribution, ladite chambre de pompe comportant un clapet d'entrée séparant la chambre de pompe d'un tube plongeur s'étendant vers un réservoir de produit fluide, un passage de dérivation étant prévu entre ledit tube plongeur et ladite chambre de pompe, ledit passage de dérivation étant disposé en amont dudit clapet d'entrée, ledit passage de dérivation reliant la chambre de pompe au tube plongeur lors de l'amorçage de la pompe.The present invention therefore relates to a fluid dispenser pump comprising a pump body, a pump chamber, at least a first piston sliding in said pump chamber for dispensing the fluid, a dispensing orifice and a displaceable shutter. and / or deformable between a closed position of the dispensing orifice and an opening position of the dispensing orifice, said pump chamber comprising an inlet valve separating the pump chamber from a plunger tube. extending to a fluid reservoir, a bypass passage being provided between said dip tube and said pump chamber, said bypass passage being disposed upstream of said inlet valve, said bypass passage connecting the pump chamber to the tube diver when priming the pump.

Avantageusement, le corps de pompe est réalisé d'une pièce monobloc avec ledit obturateur.Advantageously, the pump body is made of a one-piece piece with said shutter.

Avantageusement, le clapet d'entrée comporte un siège de clapet solidaire du premier piston et un élément de clapet, ledit premier piston coulissant de manière étanche dans ledit corps de pompe, ledit corps de pompe comportant une ouverture coopérant avec le premier piston lors de l'amorçage pour ouvrir ledit passage de dérivation et permettre le refoulement de l'air contenu dans la chambre de pompe avant le premier actionnement à travers le tube plongeur dans le réservoir.Advantageously, the inlet valve comprises a valve seat integral with the first piston and a valve element, said first piston sliding in a sealed manner in said pump body, said pump body having an opening cooperating with the first piston during the first piston. priming to open said bypass passage and allow the discharge of the air contained in the pump chamber before the first actuation through the dip tube in the tank.

Avantageusement, ladite pompe comporte une tête de distribution incorporant ledit orifice de distribution.Advantageously, said pump comprises a dispensing head incorporating said dispensing orifice.

Avantageusement, ledit obturateur comporte un second piston coopérant de manière étanche avec la tête en toute position, et un troisième piston déplaçable par rapport à ladite tête entre une position de fermeture étanche et une position d'ouverture, ledit troisième piston séparant la chambre de dosage en deux parties, une première partie de chambre de dosage disposée entre l'obturateur et ledit troisième piston et une seconde partie de chambre de dosage disposée entre ledit troisième piston et ledit second piston.Advantageously, said shutter comprises a second piston cooperating sealingly with the head in any position, and a third piston movable relative to said head between a sealed position and an open position, said third piston separating the metering chamber in two parts, a first metering chamber portion disposed between the obturator and said third piston and a second metering chamber portion disposed between said third piston and said second piston.

Avantageusement, ladite seconde partie de la chambre de pompe est reliée audit passage de dérivation.Advantageously, said second portion of the pump chamber is connected to said bypass passage.

Avantageusement, lors de l'actionnement, lorsque le troisième piston se déplace vers sa position d'ouverture, dans laquelle il relie lesdites première et seconde parties de la chambre de pompe, une partie du produit contenu dans ladite chambre de pompe peut être refoulée à travers ledit passage de dérivation dans le tube plongeur et dans le réservoir.Advantageously, during actuation, when the third piston moves towards its open position, in which it connects said first and second parts of the pump chamber, part of the product contained in said pump chamber can be forced back to through said bypass passage in the dip tube and in the reservoir.

Avantageusement, ladite seconde partie de la chambre de pompe est reliée audit passage de dérivation par un passage prévu entre lesdits second et troisième pistons.Advantageously, said second portion of the pump chamber is connected to said bypass passage by a passage provided between said second and third pistons.

Avantageusement, lesdits second et troisième pistons sont réalisés de manière monobloc.Advantageously, said second and third pistons are made integrally.

Avantageusement, ledit second piston est réalisé de manière monobloc avec ledit obturateur.Advantageously, said second piston is made integrally with said shutter.

Avantageusement, ledit obturateur est sollicité élastiquement, notamment par un ressort, vers sa position d'obturation et est déplacé et/ou déformé vers sa position d'ouverture par la pression du produit contenu dans la chambre de pompe.Advantageously, said shutter is biased elastically, in particular by a spring, towards its closed position and is moved and / or deformed towards its open position by the pressure of the product contained in the pump chamber.

Avantageusement, l'obturateur se déplace et/ou se déforme axialement par rapport audit corps de pompe, ledit troisième piston étant amené en position d'ouverture à partir d'un déplacement et/ou d'une déformation axiale prédéterminée dudit obturateur.Advantageously, the shutter moves and / or is deformed axially with respect to said pump body, said third piston being brought into the open position from a displacement and / or a predetermined axial deformation of said shutter.

Avantageusement, l'élément de clapet est une bille.Advantageously, the valve element is a ball.

Avantageusement, un seul ressort sollicite ledit premier piston vers sa position de repos et ledit obturateur vers sa position d'obturation.Advantageously, a single spring urges said first piston towards its rest position and said shutter towards its closed position.

Avantageusement, ledit ressort est hors de tout contact avec le produit fluide.Advantageously, said spring is out of contact with the fluid product.

Avantageusement, ledit premier piston et ledit siège de clapet sont réalisés de manière monobloc avec un élément de fixation tel qu'une bague encliquetable, sertissable ou vissable, adapté à fixer ladite pompe sur un réservoir de produit fluide.Advantageously, said first piston and said valve seat are made integrally with a fastening element such as a snap ring, crimpable or screwable, adapted to fix said pump on a fluid reservoir.

La présente invention a aussi pour objet un dispositif de distribution de produit fluide comportant un réservoir de produit fluide et une pompe telle que décrite ci-dessus.The present invention also relates to a fluid dispenser device comprising a fluid reservoir and a pump as described above.

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement au cours de la description détaillée suivante de celle-ci, faite en référence aux dessins joints, donnés à titre d'exemples non limitatifs, et sur lesquels :

  • la figure 1 est une vue schématique en section transversale d'un dispositif de distribution de produit fluide comportant une pompe selon un mode de réalisation avantageux de la présente invention, en position de repos ;
  • la figure 2 est une vue schématique en section transversale d'un dispositif de distribution de produit fluide comportant une pompe de distribution de produit fluide selon un mode de réalisation avantageux de la présente invention, en position d'amorçage ; et
  • la figure 3 représente une vue similaire à celle de la figure 2, dans une position en cours d'actionnement.
Other characteristics and advantages of the present invention will emerge more clearly in the course of the following detailed description thereof, made with reference to the accompanying drawings, given as non-limiting examples, and in which:
  • Figure 1 is a schematic cross-sectional view of a fluid dispenser device comprising a pump according to an advantageous embodiment of the present invention, in the rest position;
  • FIG. 2 is a diagrammatic cross-sectional view of a fluid dispenser device comprising a fluid dispenser pump according to an advantageous embodiment of the present invention, in the priming position; and
  • Figure 3 shows a view similar to that of Figure 2, in a position being actuated.

En référence aux figures, la pompe de distribution selon la présente invention comporte un corps de pompe 10 dans lequel coulisse au moins un premier piston 72. Ce premier piston 30 définit en partie une chambre de pompe 20 et l'actionnement de la pompe provoque la distribution d'une dose de produit contenue dans la chambre de pompe 20 à travers un orifice de distribution 45, de préférence formé dans une tête de distribution 40. La pompe comporte un obturateur 38, disposé directement en amont de l'orifice de distribution 45, et coopérant avec celui-ci en étant déplaçable et/ou déformable entre une position d'obturation de l'orifice de distribution 45 et une position d'ouverture de celui-ci. La chambre de pompe comporte un clapet d'entrée 70, qui peut être réalisé sous la forme d'une bille 75 formant un élément de clapet et coopérant avec un siège de clapet 71. Le corps de pompe 10 est de préférence formé d'une pièce monobloc avec l'obturateur 38, à l'intérieur de celui-ci. Avantageusement, le piston 72 et le siège de clapet 71 sont solidaire d'une pièce qui incorpore une bague de fixation 15 adaptée à fixer la pompe sur un réservoir 60 contenant le produit fluide, avantageusement avec interposition d'un joint d'étanchéité 65. Un tube plongeur 18, destiné à s'étendre jusqu'au fond du réservoir 60 pour distribuer la totalité du produit qu'il contient, peut également être réalisé de manière monobloc avec ladite pièce formant bague de fixation 15, piston 72 et siège de clapet 71. L'élément de clapet 75 est représenté sous la forme d'une bille, mais il pourrait être réalisé de manière différente.With reference to the figures, the dispensing pump according to the present invention comprises a pump body 10 in which at least a first piston 72 slides. This first piston 30 partially defines a pump chamber 20 and the actuation of the pump causes the dispensing a dose of product contained in the pump chamber 20 through a dispensing orifice 45, preferably formed in a dispensing head 40. The pump comprises a shutter 38, arranged directly upstream of the dispensing orifice 45 and cooperating with it by being displaceable and / or deformable between a closed position of the dispensing orifice 45 and an open position thereof. The pump chamber comprises an inlet valve 70, which may be in the form of a ball 75 forming a valve element and cooperating with a valve seat 71. The pump body 10 is preferably formed of a one-piece piece with the shutter 38, inside thereof. Advantageously, the piston 72 and the valve seat 71 are integral with a part which incorporates a fixing ring 15 adapted to fix the pump on a reservoir 60 containing the fluid, advantageously with the interposition of a seal 65. A dip tube 18, intended to extend to the bottom of the tank 60 to distribute all of the product that it contains, can also be made in one piece with said fixing ring member 15, piston 72 and valve seat. 71. Valve member 75 is shown as a ball, but could be made differently.

Un passage de dérivation 74 est prévu entre le tube plongeur 18 et la chambre de pompe 20, en amont du clapet d'entrée 70. Ce passage de dérivation 74 relie la chambre de pompe 20 au tube plongeur 18 lors de l'amorçage de la pompe. En particulier, ce passage de dérivation 74 peut être réalisé sous la forme d'un alésage latéral réalisé dans le siège de clapet 71 en amont de l'élément de clapet 75. Le siège de clapet 71 est alors avantageusement disposé en amont du premier piston 72, qui coulisse de manière étanche dans ledit corps de pompe, celui-ci comportant une ouverture 32 adaptée à coopérer avec ledit premier piston 72 lors de l'amorçage. Cette position d'amorçage est notamment représentée sur la figure 2. On constate que lorsque l'utilisateur actionne pour la première fois la pompe et que celle-ci contient de l'air dans la chambre de pompe 20, l'air est comprimé, ce qui ferme le clapet d'entrée 70 en pressant la bille 75 contre le siège de clapet 71, l'air étant compressible, le premier piston 72 du peut coulisser dans le corps de pompe 10 sans que l'obturateur 38 ne se déplace par rapport à la tête de distribution 40. Lorsque le premier piston 72 arrive au niveau de l'ouverture 32 du corps de pompe 10, un passage est créé entre la chambre de pompe 20 et le passage de dérivation 74, ce qui permet d'expulser l'air contenu dans la chambre de pompe 20 vers le tube plongeur 18 et donc dans le réservoir 60 comme représenté par les flèches A et B sur la figure 2. Après amorçage, lorsque la pompe est ramenée vers sa position de repos, du produit fluide est aspiré à l'intérieur de la chambre de pompe 20 et par la suite le premier piston 72 ne pourra plus atteindre ladite ouverture 32 corps de pompe 30 pendant le fonctionnement normal de la pompe, c'est-à-dire pendant la distribution du produit, mais seulement à la fin de l'actionnement. Ledit clapet d'entrée 70 fonctionne alors de manière classique pour se fermer lors de l'actionnement et s'ouvrir lorsque la pompe est ramenée vers sa position de repos.A bypass passage 74 is provided between the plunger tube 18 and the pump chamber 20, upstream of the inlet valve 70. This bypass passage 74 connects the pump chamber 20 to the plunger tube 18 when priming the pump. pump. In particular, this bypass passage 74 can be realized in the form a lateral bore made in the valve seat 71 upstream of the valve member 75. The valve seat 71 is then advantageously arranged upstream of the first piston 72, which slides in a sealed manner in said pump body, that it has an opening 32 adapted to cooperate with said first piston 72 during priming. This priming position is shown in particular in FIG. 2. It can be seen that when the user actuates the pump for the first time and that the latter contains air in the pump chamber 20, the air is compressed. which closes the inlet valve 70 by pressing the ball 75 against the valve seat 71, the air being compressible, the first piston 72 of the can slide in the pump body 10 without the shutter 38 moves by relative to the dispensing head 40. When the first piston 72 arrives at the opening 32 of the pump body 10, a passage is created between the pump chamber 20 and the bypass passage 74, which allows the expulsion the air contained in the pump chamber 20 to the plunger tube 18 and thus in the reservoir 60 as represented by arrows A and B in FIG. 2. After priming, when the pump is returned to its rest position, the product fluid is sucked into the pump chamber 20 and thereafter the first piston 72 will not be able to reach said pump body opening 30 during normal operation of the pump, i.e. during dispensing of the product, but only at the end of the actuation. Said inlet valve 70 then operates in a conventional manner to close during actuation and open when the pump is returned to its rest position.

Avantageusement, la pompe ne comporte qu'un seul ressort 50 adapté à ramener le premier piston 72 vers sa position de repos et l'obturateur 38 vers sa position d'obturation après chaque actionnement. Ce ressort 50 est avantageusement hors de tout contact avec le produit fluide, ce qui élimine tout risque d'altération du produit fluide en question. Avantageusement, l'obturateur 38 coulisse axialement entre ses positions d'ouverture et de fermeture dans un manchon 150 prévu dans le fond de la tête d'actionnement 40. Un profil de pulvérisation (non représenté) est de préférence réalisé dans ledit manchon pour permettre un tourbillonnement du produit au moment de son expulsion, pour former un spray.Advantageously, the pump has only one spring 50 adapted to return the first piston 72 to its rest position and the shutter 38 to its closed position after each actuation. This spring 50 is advantageously out of contact with the fluid, which eliminates any risk of alteration of the fluid in question. Advantageously, the shutter 38 slides axially between its open and closed positions in a sleeve 150 provided in the bottom of the actuating head 40. A spraying profile (not shown) is preferably produced in said sleeve for allow a swirling of the product at the time of its expulsion, to form a spray.

Pour obtenir un spray de bonne qualité, il est important que l'obturateur 38 ne se déplace pas trop en éloignement de l'orifice de distribution 45. Afin d'éliminer ce risque, par exemple lorsque l'utilisateur actionne de manière trop violente la tête d'actionnement 40, la pompe prévoit des moyens pour diminuer cette pression dans la chambre de pompe 20 lors de l'actionnement afin de permettre à l'obturateur 38 de rester à une distance suffisamment proche de l'orifice de distribution 45 pour réaliser un spray de bonne qualité. Ces moyens comportent des second et troisième pistons 34, 35, de préférence réalisés de manière monobloc avec ledit obturateur 40. Ledit second piston 34 coulisse de manière étanche dans la tête 40, entre une position de fermeture étanche et une position d'ouverture. Ce troisième piston 35 sépare la chambre de pompe 20 en une première partie de chambre de pompe 21, disposée en amont direct de l'orifice de distribution 45 et une seconde partie de chambre de pompe 23, située entre ledit second piston 34 et ledit troisième piston 35. Ledit troisième piston 35 coulisse dans des parties 11, 13 de la tête 40 qui peuvent comporter des diamètres différents. Ainsi, en position de fermeture étanche, le troisième piston 35 peut coopérer avec une partie de tête 11 de diamètre réduit qui se prolonge par une partie de tête 13 de diamètre plus grand. Lorsque le troisième piston 35 atteint cette seconde partie de tête 13 de diamètre plus grand, le passage est ouvert entre la première partie de chambre de pompe 21 et la seconde partie de chambre de pompe 23. En variante, la partie de tête 11 peut comporter une ou plusieurs rainures d'éventation pour ouvrir le passage entre les deux parties de chambre de pompe 21, 23 à partir d'une position prédéterminée dudit troisième piston 31.To obtain a good quality spray, it is important that the shutter 38 does not move too far away from the dispensing orifice 45. In order to eliminate this risk, for example when the user operates too violently the actuating head 40, the pump provides means for decreasing this pressure in the pump chamber 20 during actuation to allow the shutter 38 to remain at a distance sufficiently close to the dispensing orifice 45 to achieve a good quality spray. These means comprise second and third pistons 34, 35, preferably made integrally with said shutter 40. Said second piston 34 slides in a sealed manner in the head 40, between a sealed position and an open position. This third piston 35 separates the pump chamber 20 into a first pump chamber portion 21, disposed upstream of the dispensing orifice 45 and a second pump chamber portion 23, located between said second piston 34 and said third piston 35. Said third piston 35 slides in parts 11, 13 of the head 40 which may have different diameters. Thus, in the sealed position, the third piston 35 can cooperate with a reduced diameter head portion 11 which is extended by a head portion 13 of larger diameter. When the third piston 35 reaches this second larger diameter head portion 13, the passage is open between the first pump chamber portion 21 and the second pump chamber portion 23. Alternatively, the head portion 11 may comprise one or more vent grooves for opening the passage between the two pump chamber portions 21, 23 from a predetermined position of said third piston 31.

Avantageusement, un passage 33 est prévu entre lesdits second et troisième pistons 34, 35 au niveau de ladite seconde partie de chambre de pompe 23, ledit passage 33 étant relié au passage de dérivation 74, et par conséquent au tube plongeur 18 et au réservoir 60. Lorsque l'utilisateur actionne trop violemment la tête d'actionnement 40, la pression dans la chambre de pompe 20 monte très rapidement, et cette pression déplace rapidement l'obturateur 38 en éloignement de l'orifice de distribution 45. Le troisième piston 35 étant solidaire de l'obturateur 38, il se déplace en même temps que celui-ci. Après un déplacement axial prédéterminé dudit obturateur 38, ledit troisième piston 35 atteint sa position d'ouverture, de sorte que la surpression créée dans la première partie de chambre de pompe 21 est transmise à ladite seconde partie de chambre de pompe 23. Cette surpression provoque alors un refoulement d'une partie de la dose à travers le passage 33 en direction du passage de dérivation 74 et donc vers le réservoir 60 comme représenté par les flèches C et D sur la figure 3. Ainsi, la qualité du spray est garantie en empêchant l'obturateur 38 de se déplacer trop en éloignement de l'orifice de distribution 45.Advantageously, a passage 33 is provided between said second and third pistons 34, 35 at said second pump chamber portion 23, said passage 33 being connected to the bypass passage 74, and therefore to the dip tube 18 and the reservoir 60 When the user actuates the actuating head 40 too violently, the pressure in the pump chamber 20 rises very rapidly, and this pressure rapidly displaces the shutter 38 The third piston 35 being integral with the shutter 38, it moves at the same time as the latter. After a predetermined axial displacement of said shutter 38, said third piston 35 reaches its open position, so that the overpressure created in the first pump chamber portion 21 is transmitted to said second pump chamber portion 23. This overpressure causes then a discharge of a portion of the dose through the passage 33 towards the bypass passage 74 and therefore to the reservoir 60 as represented by the arrows C and D in Figure 3. Thus, the quality of the spray is guaranteed in preventing the shutter 38 from moving too far away from the dispensing orifice 45.

Le passage de dérivation 74 prévu en amont du clapet d'entrée 70 de la chambre de pompe 20 fournit donc une double fonction, à savoir d'une part un passage de refoulement d'air lors de l'amorçage, et d'autre part un passage de refoulement de produit pendant certains actionnements, pour garantir une bonne pulvérisation du produit.The bypass passage 74 provided upstream of the inlet valve 70 of the pump chamber 20 thus provides a dual function, namely on the one hand an air discharge passage during priming, and secondly a product discharge passage during certain actuations, to ensure a good spraying of the product.

L'invention a été décrite en référence à un mode de réalisation particulier de celle-ci, mais il est entendu que diverses modifications pourraient y être apportées. En particulier, le tube plongeur 18 n'est pas nécessairement solidaire ou réalisé de manière monobloc avec l'élément de fixation 15 qui fixe la pompe sur le réservoir 60. De même, les formes de l'obturateur 38, du corps de pompe 10, du piston 72, du clapet d'entrée 70 de la chambre de pompe 20 ou des autres éléments pourraient être réalisées de manière différente si nécessaire. D'autres modifications sont également envisageables pour l'homme du métier sans sortir du cadre de la présente invention tel que défini par les revendications annexées.The invention has been described with reference to a particular embodiment thereof, but it is understood that various modifications could be made thereto. In particular, the plunger tube 18 is not necessarily integral or made in one piece with the fixing element 15 which fixes the pump on the reservoir 60. Similarly, the shapes of the shutter 38, the pump body 10 , the piston 72, the inlet valve 70 of the pump chamber 20 or the other elements could be made differently if necessary. Other modifications are also conceivable for those skilled in the art without departing from the scope of the present invention as defined by the appended claims.

Claims (17)

  1. Fluid product dispensing pump comprising a pump body (10), a pump chamber (20), at least a first piston (72) sliding in the said pump chamber (20) to dispense the fluid product, a dispensing orifice (45) and a closer (38) displaceable and / or deformable between a closing position of the dispensing orifice (45) and an open position of the dispensing orifice (45), characterised in that the said pump chamber comprises an inlet valve (70) separating the pump chamber (20) from a dip tube (18) extending to a reservoir (60) of fluid product, a bypass passage (74) being provided between the said dip tube (18) and the said pump chamber (20), the said bypass passage (74) being arranged upstream of the said inlet valve (70), the said bypass passage connecting the pump chamber (20) to the dip tube (18) when the pump is primed.
  2. Pump according to claim 1, in which the pump body (10) is made in a single piece with the said closer (38).
  3. Pump according to claim 1 or 2, in which the inlet valve (70) comprises a valve seat (71) fixed to the first piston (72) and a valve element (75), the said first piston (72) sliding in a leak tight manner in the said pump body (10), the said pump body (10) comprising an opening (32) cooperating with the first piston (72) at the time of priming to open the said bypass passage (74) and to enable air contained in the pump chamber (20) to escape through the dip tube (18) in the reservoir (60) before the pump is actuated for the first time.
  4. Pump according to any one of the previous claims, in which the said pump comprises a dispensing head (40) incorporating the said dispensing orifice (45).
  5. Pump according to claim 4, in which the said closer (38) comprises a second piston (34) cooperating in a leak tight manner with the head (40) in any position, and a third piston (35) that can be moved with respect to the said head (40) between a sealed closing position and an open position, the said third piston (35) separating the dispensing chamber (20) into two parts, a first part (21) of the dispensing chamber arranged between the closer (38) and the said third piston (35) and a second part (23) of the dispensing chamber arranged between the said third piston (35) and the said second piston (34).
  6. Pump according to claim 5, in which the said second part (23) of the pump chamber (20) is connected to the said bypass passage (74).
  7. Pump according to claim 6, in which when the third piston (35) moves to its open position during actuation in which it connects the said first and second parts (21, 23) of the pump chamber (20), a part of the product contained in the said pump chamber (20) may be discharged through the said bypass passage (74) into the dip tube (18) and into the reservoir (60).
  8. Pump according to claim 6 or 7, in which the second part (23) of the pump chamber (20) is connected to the said bypass passage (74) through a passage (33) provided between the said second and third pistons (34, 35).
  9. Pump according to any one of claims 5 to 8, in which the said second and third pistons (34, 35) are made in a single piece.
  10. Pump according to any one of claims 5 to 9, in which the said second piston (34) is made in a single piece with the said closer (38).
  11. Pump according to any one of claims 5 to 10, in which the said closer (38) is elastically loaded particularly by a spring (50), towards its closing position and it is displaced and / or deformed towards its open position by pressure of the product contained in the pump chamber (20).
  12. Pump according to claim 11, in which the closer (38) moves and / or deforms in the axial direction with respect to the said pump body (10), the said third piston (35) being moved into the open position from a predetermined axial displacement and / or deformation of the said closer (38).
  13. Pump according to claim 3, in which the valve element (75) is a ball.
  14. Pump according to any one of the previous claims, in which a single spring (50) tends to move the said first piston (72) towards its rest position and the said closer (38) towards its closed position.
  15. Pump according to claim 14, in which the said spring (50) is not in contact with the fluid product.
  16. Pump according to any one of the previous claims, in which the said first piston (72) and the said valve seat (71) are made in a single piece with an attachment element (15) such as a snap fittable, crimpable or screwable ring adapted to fix the said pump onto a fluid product reservoir (60).
  17. Fluid product dispensing device comprising a fluid product reservoir (60), characterised in that it comprises a pump according to any one of the previous claims.
EP04805805A 2003-11-07 2004-11-04 Pump for distributing a fluid product Expired - Fee Related EP1687097B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0313094A FR2862107B1 (en) 2003-11-07 2003-11-07 FLUID PRODUCT DELIVERY PUMP.
PCT/FR2004/050562 WO2005044465A2 (en) 2003-11-07 2004-11-04 Pump for distributing a fluid product

Publications (2)

Publication Number Publication Date
EP1687097A2 EP1687097A2 (en) 2006-08-09
EP1687097B1 true EP1687097B1 (en) 2007-03-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04805805A Expired - Fee Related EP1687097B1 (en) 2003-11-07 2004-11-04 Pump for distributing a fluid product

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US (1) US7798375B2 (en)
EP (1) EP1687097B1 (en)
JP (1) JP4891776B2 (en)
CN (1) CN100471579C (en)
DE (1) DE602004005613T2 (en)
FR (1) FR2862107B1 (en)
WO (1) WO2005044465A2 (en)

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Publication number Priority date Publication date Assignee Title
FR2892158B1 (en) * 2005-10-17 2011-10-21 Valois Sas FLUID PRODUCT DELIVERY PUMP
FR2898818B1 (en) * 2006-03-22 2008-08-22 Valois Sas FLUID PRODUCT DELIVERY PUMP
GB0610666D0 (en) * 2006-05-30 2006-07-05 Glaxo Group Ltd Fluid dispenser
FR2917651B1 (en) * 2007-06-20 2010-09-17 Rexam Dispensing Sys PUMP FOR DISTRIBUTION OF AN IMPROVED LIQUID IMPROVED PRODUCT
DE102008027599A1 (en) 2008-06-10 2009-12-31 Meadwestvaco Calmar Gmbh Fluidaustragkopf
DE102008036976A1 (en) * 2008-08-08 2010-02-11 Behr Gmbh & Co. Kg Pumping device and method for operating a pumping device
DE102011082420B4 (en) * 2011-09-09 2021-02-04 Aptar Radolfzell Gmbh Liquid dispenser and discharge head for a liquid dispenser
CN103420022B (en) * 2012-05-16 2015-09-09 丁要武 Push type liquor pump
EP2977109B1 (en) 2014-07-23 2020-03-11 Noxell Corporation Methods, devices and systems for refilling a liquid dispenser
FR3028571B1 (en) * 2014-11-14 2019-09-13 Aptar France Sas MANUAL PUMP
US20160296958A1 (en) * 2015-04-07 2016-10-13 Eos Products, Llc Liquid dispenser with pump
DE102016014898A1 (en) 2016-12-12 2018-06-14 Aptar Dortmund Gmbh Pump and dispenser
US10889480B2 (en) * 2018-10-24 2021-01-12 Haier Us Appliance Solutions, Inc. Precise fill dispensing system for an appliance
CN109592203B (en) * 2018-11-19 2020-02-14 深圳博纳精密给药系统股份有限公司 Sterile spray pump
FR3095968B1 (en) * 2019-05-14 2021-10-01 Aptar France Sas Fluid dispenser device

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US4640443A (en) * 1983-06-08 1987-02-03 Corsette Douglas Frank Manually operated dispensing pump
JP3697012B2 (en) * 1996-03-22 2005-09-21 株式会社三谷バルブ Reciprocating pump type ejector
CA2460534C (en) * 2001-09-21 2010-08-03 Ing. Erich Pfeiffer Gmbh Dosing device comprising a medium reservoir and corresponding pump device
FR2862106B1 (en) * 2003-11-07 2007-08-24 Valois Sas FLUID PRODUCT DELIVERY PUMP.
FR2898818B1 (en) * 2006-03-22 2008-08-22 Valois Sas FLUID PRODUCT DELIVERY PUMP

Also Published As

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JP2007510847A (en) 2007-04-26
WO2005044465A3 (en) 2005-06-30
US20070272713A1 (en) 2007-11-29
WO2005044465A2 (en) 2005-05-19
FR2862107B1 (en) 2006-02-10
JP4891776B2 (en) 2012-03-07
CN1874850A (en) 2006-12-06
DE602004005613D1 (en) 2007-05-10
DE602004005613T2 (en) 2007-12-06
CN100471579C (en) 2009-03-25
EP1687097A2 (en) 2006-08-09
US7798375B2 (en) 2010-09-21
FR2862107A1 (en) 2005-05-13

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