FR2838783A1 - Liquid product distribution pump comprises housing containing pump chamber and return spring, and outlet valve closed by product pressure on actuation and mechanically opened by control element on dose completion - Google Patents
Liquid product distribution pump comprises housing containing pump chamber and return spring, and outlet valve closed by product pressure on actuation and mechanically opened by control element on dose completion Download PDFInfo
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- FR2838783A1 FR2838783A1 FR0204809A FR0204809A FR2838783A1 FR 2838783 A1 FR2838783 A1 FR 2838783A1 FR 0204809 A FR0204809 A FR 0204809A FR 0204809 A FR0204809 A FR 0204809A FR 2838783 A1 FR2838783 A1 FR 2838783A1
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- valve
- pump
- outlet valve
- head
- actuation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- 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
- B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
- B05B11/1019—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element the inlet valve moving concurrently with the controlling element during whole pressure and aspiration strokes, e.g. a cage for an inlet valve ball being part of the controlling element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- 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
- B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
- B05B11/104—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being opened by pressure after a defined accumulation stroke
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- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Description
SR 21988 JP/PRSR 21988 JP / PR
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La presente invention concerne une pompe de distribution de produit fluide, et plus particulierement une pompe actionnee manuellement pour The present invention relates to a fluid dispensing pump, and more particularly a manually operated pump for
distribuer une dose de produit fluide a chaque actionnement. distribute a dose of fluid at each actuation.
Les pompes, et notamment les pompes cites << doseuses >>, qui distribuent s une dose de produit a chaque actionnement, vent bien connues dans ltetat de la technique. Wiles vent generalement utilisees pour distribuer du produit fluide, tels Pumps, and in particular the pumps referred to as "dosers", which dispense a dose of product on each actuation, are well known in the state of the art. Wiles are generally used to dispense fluid, such as
que des produits pharmaceutiques, cosmetiques, de la parfumerie ou similaire. than pharmaceuticals, cosmetics, perfumery or the like.
Une telle pompe comporte generalement une chambre de pompe delimitee entre un clapet d'entree de la chambre de pompe et un clapet de sortie de la chambre to de pompe. Lors de l'actionnement, le clapet d'entree est ferme automatiquement, et au bout d'un moment, le clapet de sortie est ouvert permettant ltexpulsion du produit contenu dans la chambre de pompe. Pour ameliorer le fonctionnement d'une telle pompe, il a ete propose de realiser le clapet de sortie de la chambre de pompe de telle sorte que pendant s l'actionnement de la pompe, la pression du produit a l'interieur de la chambre de pompe sollicite le clapet de sortie vers sa position de fermeture, ce qui garantit une etancheite absolue. Le clapet de sortie est ensuite ouvert mecaniquement, de preference en fin d'actionnement, quand la dose est complete, pour ouvrir le Such a pump generally comprises a pump chamber delimited between an inlet valve of the pump chamber and an outlet valve of the pump chamber. When actuated, the inlet valve is closed automatically, and after a while, the outlet valve is open allowing the expulsion of the product contained in the pump chamber. To improve the operation of such a pump, it has been proposed to produce the outlet valve of the pump chamber so that during the actuation of the pump, the pressure of the product inside the chamber pump urges the outlet valve to its closed position, which guarantees absolute tightness. The outlet valve is then opened mechanically, preferably at the end of actuation, when the dose is complete, to open the
passage et permettre ['expulsion du produit contenu dans la chambre de pompe. passage and allow the expulsion of the product contained in the pump chamber.
o Une telle pompe est notamment decrite dans la demande de brevet francais FR 00-13569, deposee le 23 octobre 2000. Bien que fonctionnant de maniere satisfaisante, une telle pompe peut toutefois presenter un probleme au niveau du fonctionnement du clapet de sortie. En effet, le clapet de sortie etant sollicite pendant l'actionnement de la pompe vers sa position de fermeture par la pression s du produit, puis ouvert mecaniquement pour permettre ['expulsion de ce produit, il y a un risque que ltecoulement du produit fluide hors de la chambre de pompe apres ouverture du clapet de sortie ramene celui-ci vers sa position de fermeture, de sorte que la distribution de la dose de produit risque d'etre o Such a pump is described in particular in French patent application FR 00-13569, filed on October 23, 2000. Although operating satisfactorily, such a pump may however present a problem in terms of the operation of the outlet valve. Indeed, the outlet valve being urged during actuation of the pump to its closed position by the pressure s of the product, then opened mechanically to allow the expulsion of this product, there is a risk that the flow of the fluid product out of the pump chamber after opening the outlet valve brings it back to its closed position, so that the distribution of the product dose may be
incomplete. La reproductibilite de la dose n'est done pas certaine. incomplete. The reproducibility of the dose is therefore not certain.
so La presente invention a pour but de fournir une pompe de distribution de n / a The object of the present invention is to provide a distribution pump for
produit fluide qui ne reproduit pas les inconvenients susmentionnes. fluid product which does not reproduce the above-mentioned drawbacks.
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La presente invention a ainsi pour but de fournir une pompe de distribution de produit fluide qui garantit la distribution totale de chaque dose de The present invention therefore aims to provide a fluid dispensing pump which guarantees the total distribution of each dose of
produit fluide a chaque actionnement de la pompe. fluid product each time the pump is actuated.
La presente invention a egalement pour but de fournir une pompe de distribution de produit fluide qui soit simple et peu couteuse a fabriquer et a assembler. La presente invention a done pour objet une pompe de distribution de produit fluide actionnee manuellement pour distribuer une dose de produit fluide a chaque actionnement, ladite pompe comportant un corps de pompe contenant o une chambre de pompe definie entre un premier piston et un second piston, et un ressort de rappel sollicitant elastiquement la pompe vers sa position de repos et la ramenant automatiquement dans cette position de repos apres chaque actionnement, ladite chambre de pompe comportant un clapet de sortie, ledit clapet de sortie etant, pendant l'actionnement de la pompe, sollicite par la pression du produit vers une position de fermeture et etant ouvert mecaniquement par un element de commande de clapet en fin d'actionnement, lorsque la dose est complete, caracterisee en ce que la pompe comporte des moyens de blocage de clapet pour maintenir le clapet de sortie en position ouverte pendant ['expulsion du produit hors de la chambre de pompe, pour o eviter que ltecoulement du produit fluide ne referme ledit clapet de sortie avant ltexpulsion de la totalite de la dose de produit fluide, ledit clapet de sortie etant ferme mecaniquement en fin d' expulsion du produit fluide par ledit element de The present invention also aims to provide a fluid dispensing pump which is simple and inexpensive to manufacture and assemble. The present invention therefore relates to a fluid dispenser pump actuated manually to dispense a dose of fluid product on each actuation, said pump comprising a pump body containing o a pump chamber defined between a first piston and a second piston, and a return spring resiliently urging the pump towards its rest position and automatically returning it to this rest position after each actuation, said pump chamber comprising an outlet valve, said outlet valve being, during actuation of the pump , urged by the pressure of the product towards a closed position and being opened mechanically by a valve control element at the end of actuation, when the dose is complete, characterized in that the pump includes valve blocking means for maintaining the outlet valve in the open position during the expulsion of the product from the pump chamber, in order to avoid that the flow t of the fluid product does not close said outlet valve before the expulsion of the entire dose of fluid product, said outlet valve being closed mechanically at the end of expulsion of the fluid product by said element
commande de clapet, sous lteffet audit ressort de rappel de la pompe. valve control, under the effect of said pump return spring.
Avantageusement, lesdits moyens de blocage de clapet consistent en un Advantageously, said valve blocking means consist of a
coincement du clapet de sortie en position d'ouverture. jamming of the outlet valve in the open position.
Avantageusement, ledit clapet de sortie comporte un element de clapet et un siege de clapet, ledit element de clapet comportant une tete de clapet cooperant de maniere etanche avec ledit siege de clapet en position de fermeture du clapet, et un corps de clapet s'etendant axialement a partir de ladite tete de clapet, le diametre audit corps de clapet etant inferieur au diametre de ladite fete, ledit corps de clapet comportant, du cote oppose a ladite tete de clapet, un pied Advantageously, said outlet valve comprises a valve element and a valve seat, said valve element comprising a valve head cooperating in a sealed manner with said valve seat in the valve closed position, and a valve body extending axially from said valve head, the diameter of said valve body being less than the diameter of said party, said valve body comprising, on the side opposite to said valve head, a foot
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de clapet dont le diametre est superieur au diametre audit corps de clapet, ltelement de commande de clapet etant monte coulissant autour audit corps de clap et et co op erant mecaniquement ave c le dit p ie d de clap et p o ur o uvrir le clapet of a valve whose diameter is greater than the diameter of said valve body, the valve control element being slidably mounted around said valve body and and co-operating mechanically with said valve and to open the valve
de sortie, et avec ladite tete de clapet pour fermer le clapet de sortie. outlet valve, and with said valve head to close the outlet valve.
s Avantageusement, le siege de clapet est forme dans ledit premier piston, ladite tete de clapet etant inseree avec frottement dans ledit premier piston, une force superieure a ladite force de frottement etant necessaire pour deplacer ladite tete de clapet par rapport audit siege de clapet entre ses positions de fermeture et d'ouverture. o Avantageusement, le siege de clapet est forme par une surface annulaire radiale environ perpendiculaire a l' axe central de la pompe et entourant ltentree d'un canal d'expulsion reliant la chambre de pompe a un orifice de distribution, ladite tete de clapet cooperant avec ladite surface annulaire radiale par Advantageously, the valve seat is formed in said first piston, said valve head being inserted with friction into said first piston, a force greater than said friction force being necessary to move said valve head relative to said valve seat between its closed and open positions. Advantageously, the valve seat is formed by a radial annular surface approximately perpendicular to the central axis of the pump and surrounding the inlet of an expulsion channel connecting the pump chamber to a distribution orifice, said valve head cooperating with said radial annular surface by
l'intermediaire d'une surface radiale correspondante. through a corresponding radial surface.
s Avantageusement, le premier piston comporte un manchon axial dans lequel coulisse ladite tete de clapet, le diametre interne audit manchon axial etant legerement inferieur au diametre externe de ladite tete de clapet pour definir ladite force de frottement, et done la force necessaire pour deplacer ladite Advantageously, the first piston includes an axial sleeve in which said valve head slides, the internal diameter of said axial sleeve being slightly smaller than the external diameter of said valve head to define said friction force, and therefore the force necessary to move said
tete de clapet par rapport audit siege de clapet. valve head with respect to said valve seat.
Avantageusement, ledit manchon axial comporte des moyens de butee, tel qutun epaulement radial, pour definir la position d'ouverture de ladite tete de clapet. Avantageusement, ladite tete de clapet comporte de s moyens de pass age de produit, telle(s) qutune ou plusieurs ouverture(s) prevue(s) sur la peripherie de Advantageously, said axial sleeve includes stop means, such as a radial shoulder, to define the open position of said valve head. Advantageously, said valve head comprises means for passing the product, such as one or more opening (s) provided on the periphery of
s ladite tete de clapet.s said valve head.
La presente invention a egalement pour objet un dispositif de distribution The present invention also relates to a dispensing device
de produit fluide comportant une pompe telle que decrite ci-dessus. of fluid product comprising a pump as described above.
La presente invention va maintenant etre decrite plus amplement en reference aux dessins joints, donnes a titre d'exemples non limitatifs, et sur o lesquels: The present invention will now be described more fully with reference to the accompanying drawings, given by way of nonlimiting examples, and in which:
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- la figure 1 est une vue schematique en section transversale d'une pompe de distribution de produit fluide selon un mode de realisation avantageux de la presente invention, en position de repos de la pompe, - la figure 2 est une vue similaire a celle de la figure 1, en position d'actionnement de la pompe, - la figure 3 est une vue schematique de detail en section transversale representant a echelle agrandie le clapet de sortie de la pompe des figures 1 et 2, en position de fermeture du clapet de sortie, et o - la figure 4 est une vue similaire a celle de la figure 3, en position - Figure 1 is a schematic cross-sectional view of a fluid dispensing pump according to an advantageous embodiment of the present invention, in the pump's rest position, - Figure 2 is a view similar to that of Figure 1, in the pump actuation position, - Figure 3 is a schematic detail view in cross section showing on an enlarged scale the outlet valve of the pump of Figures 1 and 2, in the closed position of the valve outlet, and o - Figure 4 is a view similar to that of Figure 3, in position
d'ouverture du clapet de sortie.opening the outlet valve.
En reference aux dessins, la presente invention concerne une pompe comportant un corps de pompe 10 contenant une chambre de pompe 11. La chambre de pompe 11 est definie entre un premier piston 20, appele << piston s haut >> et un second piston 30 appele << piston teas >>, et la chambre de pompe 11 comporte un clapet d'entree 80 et un clapet de sortie 40. Le clapet d'entree 80 peut avantageusement etre realise sous la forme d'une bille cooperant avec un siege de clapet approprie. Comme represente sur les figures 1 et 2, le piston haut coulisse avantageusement dans une partie de corps de pompe de plus grand o diametre, et le piston teas 30 coulisse dans une partie de corps de pompe de plus petit diametre. Ceci est classique pour ce type de pompe. La pompe comporte en outre un ressort de rappel 50 qui sollicite elastiquement la pompe vers sa position de repos representee sur la figure 1, et qui la ramene automatiquement vers cette position de repos apres chaque actionnement. Dans l'exemple represente, le s ressort de rappel 50 est dispose entre le corps de pompe et le siege de clapet d'entree 80, mais tout autre positionnement du ressort de rappel 50 est egalement envisageable. Le clapet de sortie 40 est realise de telle sorte que pendant l'actionnement de la pompe, il est sollicite par la pression du produit contenu a l'interieur de la chambre de pompe 11 vers sa position de fermeture, ledit clapet de sortie 40 etant ouvert mecaniquement par un element de commande de clapet 60 en fin With reference to the drawings, the present invention relates to a pump comprising a pump body 10 containing a pump chamber 11. The pump chamber 11 is defined between a first piston 20, called "high piston" and a second piston 30 called "piston teas", and the pump chamber 11 comprises an inlet valve 80 and an outlet valve 40. The inlet valve 80 can advantageously be produced in the form of a ball cooperating with a seat of suitable valve. As shown in FIGS. 1 and 2, the upper piston advantageously slides in a part of the pump body of larger diameter, and the teas piston 30 slides in a part of the pump body of smaller diameter. This is classic for this type of pump. The pump further comprises a return spring 50 which resiliently biases the pump towards its rest position shown in FIG. 1, and which automatically brings it back to this rest position after each actuation. In the example shown, the return spring 50 is disposed between the pump body and the inlet valve seat 80, but any other positioning of the return spring 50 is also possible. The outlet valve 40 is made in such a way that during actuation of the pump, it is stressed by the pressure of the product contained inside the pump chamber 11 towards its closed position, said outlet valve 40 being mechanically opened by a valve control element 60 at the end
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d'actionnement lorsque la dose est complete. Cet element de commande de clapet 60 coopere d'une part avec le clapet de sortie 40, et d'autre part avec le when the dose is complete. This valve control element 60 cooperates on the one hand with the outlet valve 40, and on the other hand with the
piston teas 30 ou un element solidaire de celui-ci. piston teas 30 or an element integral therewith.
Selon ['invention, la pompe comporte des moyens de blocage de clapet s pour maintenir le clapet de sortie 40 en position ouverte pendant ltexpulsion du produit hors de la chambre de pompe 11. De cette maniere, on evite que ltecoulement du produit fluide hors de la chambre de pompe 11 ne referme le clapet de sortie 40 avant que la totalite de la dose contenue dans ladite chambre de pompe 11 ntait ete expulsee. La fermeture du clapet de sortie 40 est ensuite o realisee mecaniquement, en fin d'expulsion du produit fluide, par ledit element de commande de clapet 60 sous lteffet du ressort de rappel 50 de la pompe. De maniere avantageuse, les moyens de blocage de clapet de sortie consistent en un coincement du clapet de sortie 40 en position d'ouverture, comme cela sera decrit ciapres en reference a un mode de realisation avantageux de la presente s invention. Les figures 1 a 4 montrent un mode de realisation avantageux de la presente invention. Dans ce mode de realisation, le clapet de sortie 40 comporte un element de clapet 41 qui coopere avec un siege de clapet 42. L'element de clapet 41 comporte une tete de clapet 43 qui coopere de maniere etanche avec o ledit siege de clapet 42 en position de fermeture du clapet 40. L'element de clapet 41 comporte egalement un corps de clapet 44 qui dans l'exemple represente stetend axialement a partir de ladite tete de clapet 43. Avantageusement, le diametre du corps de clapet 44 est inferieur au diametre de la tete de clapet 43, et le corps de clapet 44 comporte du cote oppose a ladite tete de clapet 43, un pied s de clapet 45 dont le diametre est a nouveau superieur au diametre audit corps de clapet 44. De cette maniere, le corps de clapet 44 definit une partie centrale de According to the invention, the pump comprises valve blocking means s for holding the outlet valve 40 in the open position during the expulsion of the product from the pump chamber 11. In this way, it is avoided that the flow of the fluid product out of the pump chamber 11 closes the outlet valve 40 before the entire dose contained in said pump chamber 11 has been expelled. The closure of the outlet valve 40 is then carried out mechanically, at the end of expulsion of the fluid product, by said valve control element 60 under the effect of the return spring 50 of the pump. Advantageously, the outlet valve blocking means consist in jamming the outlet valve 40 in the open position, as will be described below with reference to an advantageous embodiment of the present invention. Figures 1 to 4 show an advantageous embodiment of the present invention. In this embodiment, the outlet valve 40 comprises a valve element 41 which cooperates with a valve seat 42. The valve element 41 comprises a valve head 43 which cooperates in a sealed manner with o said valve seat 42 in the closed position of the valve 40. The valve element 41 also includes a valve body 44 which, in the example shown, extends axially from said valve head 43. Advantageously, the diameter of the valve body 44 is less than diameter of the valve head 43, and the valve body 44 comprises, on the side opposite to said valve head 43, a valve foot 45 whose diameter is again greater than the diameter of said valve body 44. In this way, the valve body 44 defines a central part of
plus petit diametre disposee entre la tete de clapet 43 et le pied de clapet 45. smaller diameter arranged between the valve head 43 and the valve foot 45.
L'element de commande de clapet 60 est monte coulissant autour audit corps de clapet 44, en particulier autour de ladite partie de plus petit diametre, et coopere mecaniquement d'une part avec le pied de clapet 45 pour ouvrir le clapet de sortie 40, et d'autre part avec la tete de clapet 43 pour refermer le clapet de sortie The valve control element 60 is slidably mounted around said valve body 44, in particular around said part of smaller diameter, and cooperates mechanically on the one hand with the valve foot 45 to open the outlet valve 40, and on the other hand with the valve head 43 to close the outlet valve
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40. Ces operations d'ouverture et de fermeture du clapet de sortie vent realisees 40. These opening and closing operations of the wind outlet valve performed
de maniere mecanique par ledit element de commande de clapet 60. mechanically by said valve control element 60.
Avantageusement, le siege de clapet 42 du clapet de sortie 40 est forme a l'interieur audit premier piston 20, ou piston haut, ladite tete de clapet 43 etant inseree avec frottement dans ledit premier piston 20. De cette maniere, une force superieure a ladite force de frottement est necessaire pour deplacer ladite tete de clapet 43 par rapport audit siege de clapet 42 entre ces positions de fermeture et d'ouverture. Avantageusement, le siege de clapet 42 peut etre forme par une surface annulaire radiale environ perpendiculaire a l'axe central de la pompe, et o qui entoure ['entree 71 d'un canal d'expulsion 70 reliant la chambre de pompe 11 a un orifice de distribution. De maniere classique, le piston haut 20 peut etre solidaire d'une tige d'actionnement qui incorpore le canal central 70 pour ltexpulsion du produit. La tete de clapet 43 coopere avantageusement avec ladite surface annulaire radiale 42 par l'intermediaire d'une surface radiale s correspondante 43'. Un profil particulier peut etre prevu au niveau de l' interface entre lesdites surfaces radiales annulaires 42 et 43' pour favoriser ltetancheite du clapet de sortie 40 en position de fermeture. Le clapet de sortie 40 est ainsi sollicite vers sa position de fermeture des qu'une pression est creee dans la Advantageously, the valve seat 42 of the outlet valve 40 is formed inside said first piston 20, or high piston, said valve head 43 being inserted with friction in said first piston 20. In this way, a force greater than said friction force is necessary to move said valve head 43 relative to said valve seat 42 between these closed and open positions. Advantageously, the valve seat 42 can be formed by an annular radial surface approximately perpendicular to the central axis of the pump, and which surrounds the inlet 71 of an expulsion channel 70 connecting the pump chamber 11 to a dispensing orifice. Conventionally, the top piston 20 can be secured to an actuating rod which incorporates the central channel 70 for the expulsion of the product. The valve head 43 advantageously cooperates with said radial annular surface 42 by means of a corresponding radial surface s 43 '. A particular profile can be provided at the interface between said annular radial surfaces 42 and 43 'to promote the tightness of the outlet valve 40 in the closed position. The outlet valve 40 is thus urged towards its closed position as soon as a pressure is created in the
chambre de pompe 11, ce qui assure une etancheite totale audit clapet. pump chamber 11, which ensures a total seal at said valve.
o Avantageusement, le piston haut 20 comporte un manchon axial interne 21 dans lequel coulisse ladite tete de clapet 43. Pour realiser ['invention, le diametre interne audit manchon axial 21 peut etre legerement inferieur au diametre externe de ladite tete de clapet 43. De cette maniere on definit ladite force de frottement entre ladite tete de clapet 43 et ledit manchon axial 21, et par consequent egalement la force necessaire pour deplacer ladite tete de clapet 43 par rapport audit siege de clapet 42. Avantageusement, comme represente sur les figures 3 et 4, le manchon axial 21 du piston haut 20 peut comporter des moyens de butee 22, realises par exemple sous la forme d'un epaulement radial continu ou segmente, pour definir la position d'ouverture de ladite tete de clapet 43. De meme, dans sa configuration particuliere representee sur les dessins, la tete de clapet 43 peut comporter des moyens de passage de produit 48, par exemple o Advantageously, the top piston 20 includes an internal axial sleeve 21 in which said valve head 43 slides. To carry out the invention, the internal diameter of said axial sleeve 21 may be slightly smaller than the external diameter of said valve head 43. this way we define said friction force between said valve head 43 and said axial sleeve 21, and therefore also the force necessary to move said valve head 43 relative to said valve seat 42. Advantageously, as shown in Figures 3 and 4, the axial sleeve 21 of the top piston 20 may include stop means 22, produced for example in the form of a continuous or segmented radial shoulder, to define the open position of said valve head 43. Similarly , in its particular configuration shown in the drawings, the valve head 43 may include product passage means 48, for example
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realises sous la forme d'une ou plusieurs ouverture(s) qui peut(vent) etre realized in the form of one or more opening (s) which can (wind) be
prevue(s) sur la peripherie de ladite tete de clapet 43. provided on the periphery of said valve head 43.
Le fonctionnement de la pompe selon ['invention est le suivant. Lorsque l'utilisateur actionne la pompe a partir de sa position de repos representee sur la s figure 1, il sollicite la tige d'actionnement, qui est solidaire du piston haut 20, axialement vers le teas sur la figure 1, ce qui cree une surpression a l'interieur de la chambre de pompe 11. Cette surpression ferme automatiquement le clapet d' entree 80 et provoque un deplacement du piston teas 30 sous l' effet de la pression creee a l'interieur de la chambre de pompe 11. Le diametre du corps de o pompe dans lequel coulisse le piston teas etant inferieur au diametre du corps de pompe dans lequel coulisse le piston haut, le piston teas 30 se deplace plus vite axialement vers le teas que le piston haut 20. Comme visible sur les figures 1 et 2, le piston teas 30 coopere avec ltelement de commande 60 par l'intermediaire d'un epaulement radial, de sorte que lorsque le piston teas 30 se deplace axialement, il entra^ne avec lui ledit organe de commande de clapet 60. Ledit element de commande de clapet 60 coulisse done autour du corps de clapet 44 de diametre reduit. En effet, ['element de clapet 41 se deplace ensemble avec le premier piston 20 alors que ltelement de commande de clapet 60 se deplace ensemble avec le second piston 30, de sorte que ltelement de commande de The operation of the pump according to the invention is as follows. When the user actuates the pump from its rest position shown in FIG. 1, he requests the actuating rod, which is integral with the high piston 20, axially towards the teas in FIG. 1, which creates a overpressure inside the pump chamber 11. This overpressure automatically closes the inlet valve 80 and causes displacement of the teas piston 30 under the effect of the pressure created inside the pump chamber 11. The diameter of the pump body in which the teas piston slides being smaller than the diameter of the pump body in which the high piston slides, the teas piston 30 moves axially more quickly towards the teas than the high piston 20. As can be seen in the figures 1 and 2, the teas piston 30 cooperates with the control element 60 by means of a radial shoulder, so that when the teas piston 30 moves axially, it drives said valve control member 60 with it. Said key control element apet 60 slides therefore around the valve body 44 of reduced diameter. Indeed, the valve element 41 moves together with the first piston 20 while the valve control element 60 moves together with the second piston 30, so that the control element of
clapet 60 se deplace plus vite axialement vers le teas que ltelement de clapet 41. valve 60 moves axially faster towards the teas than valve element 41.
Lorsque lt element de commande de clapet 60 arrive a la position d' extremite inferieure, dans laquelle il coopere par l'intermediaire d'un epaulement 61 avec le pied de clapet 45, il va alors entrainer ledit element de clapet 41 axialement vers le teas, de sorte que ledit element de clapet 41 va se decoller du siege de clapet 42 contre loquel il etait presse par la pression du produit contenu dans la chambre de pompe 11. Comme represente sur la figure 4, ltelement de clapet 41, et notamment la tete de clapet 43, se deplace axialement a l'interieur du manchon axial interne 21 du premier piston 20 sur une faible distance A, suffisante pour ouvrir un passage au produit contenu dans la chambre de pompe 11. Le produit contenu dans ladite chambre de pompe 11 s'ecoule alors par ledit passage de produit 48 vers ledit canal d' expulsion 70 contenu a l' interieur audit When the valve control element 60 arrives at the lower end position, in which it cooperates via a shoulder 61 with the valve foot 45, it will then drive said valve element 41 axially towards the teas. , so that said valve element 41 will come off from the valve seat 42 against which it was pressed by the pressure of the product contained in the pump chamber 11. As shown in FIG. 4, the valve element 41, and in particular the valve head 43, moves axially inside the internal axial sleeve 21 of the first piston 20 over a short distance A, sufficient to open a passage for the product contained in the pump chamber 11. The product contained in said pump chamber 11 then flows through said passage of product 48 to said expulsion channel 70 contained inside said
8 28387838 2838783
premier piston 20. L'epaulement 22, qui peut etre prevu dans la paroi laterale du manchon axial 21, definit avantageusement la positon d'ouverture du clapet de sortie 40, represente sur la figure 4. Comme represente schematiquement de maniere tres exageree sur les figures 3 et 4, le diametre externe de la tete de clapet 43 est superieur au diametre interne du manchon axial 21. Ceci provoque un coincement par frottement de ladite tete de clapet 43 dans ledit manchon axial 21, ledit frottement etant suffisant pour maintenir ledit clapet de sortie 40 en position ouverture pendant toute la duree de ltexpulsion du produit contenu dans la chambre de pompe 11. I1 nty a done pas de risque que le clapet de sortie o 40 se referme avant ltexpulsion totale de la dose de produit contenu dans la chambre de pompe 11, ce qui rend la distribution et le fonctionnement de la pompe fiable et sure, notamment en ce qui concerne la reproductibilite de la dose. Lorsque l'utilisateur relache la pression sur la pompe, le ressort de rappel ramene ['element de commande 60 axialement vers le haut, de sorte que cet s element de commande de clapet coulisse a nouveau autour audit corps de clapet 44 jusqu'a ce qutil vienne cooperer avec la tete de clapet 43 par l'intermediaire de son epaulement 61. La force de frottement entre la tete de clapet 43 et le manchon axial 21 est alors definie de telle sorte qu'elle est legerement inferieure a la force exercee par le ressort de rappel 50 sur ['element de commande de o clapet 60. Ainsi, cet element de commande de clapet 60 va refermer mecaniquement le clapet de sortie 40 en repoussant axialement ltelement de clapet 41 vers le haut en contact etanche avec le siege de clapet 42, malgre la force de frottement existent entre la tete de clapet 43 et le manchon axial 21 du first piston 20. The shoulder 22, which can be provided in the side wall of the axial sleeve 21, advantageously defines the opening position of the outlet valve 40, represented in FIG. 4. As shown schematically in a very exaggerated manner on the Figures 3 and 4, the outer diameter of the valve head 43 is greater than the inner diameter of the axial sleeve 21. This causes a jamming of said valve head 43 in said axial sleeve 21, said friction being sufficient to maintain said valve outlet 40 in the open position for the entire duration of the expulsion of the product contained in the pump chamber 11. There is therefore no risk that the outlet valve o 40 closes before the total expulsion of the dose of product contained in the chamber pump 11, which makes the distribution and operation of the pump reliable and safe, in particular with regard to the reproducibility of the dose. When the user releases the pressure on the pump, the return spring brings the control element 60 axially upwards, so that this valve control element slides again around said valve body 44 until it that it comes to cooperate with the valve head 43 via its shoulder 61. The frictional force between the valve head 43 and the axial sleeve 21 is then defined so that it is slightly less than the force exerted by the return spring 50 on the control element of the valve 60. Thus, this valve control element 60 will mechanically close the outlet valve 40 by pushing axially the valve element upwards in tight contact with the seat of the valve. valve 42, despite the friction force between the valve head 43 and the axial sleeve 21 of the
piston haut 20.high piston 20.
La presente invention fournit done une pompe de distribution de produit fluide dans laquelle le clapet de sortie est sollicite vers sa position de fermeture pendant toute la course d'actionnement de la pompe, ce qui garantit une etancheite absolue a ce niveau la, puis est ouvert mecaniquement en fin de course pour permettre ['expulsion du produit contenu dans la chambre de o pompe, la distribution de la totalite de la dose contenue dans la chambre de pompe etant garantie par le fait que le clapet de sortie ne peut pas se refermer The present invention therefore provides a fluid dispensing pump in which the outlet valve is biased towards its closed position during the entire actuation stroke of the pump, which guarantees absolute sealing at this level, then is opened. mechanically at the end of the stroke to allow the expulsion of the product contained in the pump chamber, the distribution of the entire dose contained in the pump chamber being guaranteed by the fact that the outlet valve cannot be closed
9 28387839 2838783
accidentellement sous lt effet du flux du produit sortant avant la fin d' expulsion accidentally under the effect of the flow of product leaving before the end of expulsion
du produit contenu dans la chambre de pompe. of the product contained in the pump chamber.
La presente invention a ete decrite en reference a un mode de realisation particulier de celle-ci, mais il est entendu que toute modification peut y etre apportee par un homme du metier sans sortir du cadre de la presente invention The present invention has been described with reference to a particular embodiment thereof, but it is understood that any modification may be made to it by a person skilled in the art without departing from the scope of the present invention.
tel que defini par les revendications annexees. En particulier, la forme specifique as defined by the appended claims. In particular, the specific shape
du clapet de sortie, a savoir de son element de clapet et du siege de clapet, ainsi que la forme de ['element de commande de clapet pouvant etre realisee de maniere differente, a condition qu'ils realisent la fonction d'ouverture et de o fermeture mecanique audit clapet de sortie. On peut aussi envisager des moyens de blocage du clapet de sortie en position d'ouverture qui soient realises de maniere differente d'un coincement. Par exemple, on pourrait utiliser des moyens de blocage mecaniques qui empecheraient une fermeture du clapet de sortie jusquta ce que ces moyens de blocage soient liberes d'une quelconque s maniere au moment du retour de la pompe vers sa position de repos, apres of the outlet valve, namely of its valve element and of the valve seat, as well as the form of the valve control element which can be produced in different ways, provided that they perform the function of opening and o mechanical closing at said outlet valve. It is also possible to envisage means for blocking the outlet valve in the open position which are produced differently from jamming. For example, mechanical locking means could be used which would prevent closing of the outlet valve until these locking means are released in any way when the pump returns to its rest position, after
chaque actionnement. D'autre variantes vent egalement envisageables. each actuation. Other variants are also possible.
28387832838783
Claims (9)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0204809A FR2838783B1 (en) | 2002-04-17 | 2002-04-17 | FLUID PRODUCT DISPENSING PUMP |
| EP03740604A EP1497039B1 (en) | 2002-04-17 | 2003-04-14 | Distribution pump for a liquid product |
| JP2003583649A JP4295121B2 (en) | 2002-04-17 | 2003-04-14 | Fluid dispenser pump |
| CN03808560.7A CN1646231B (en) | 2002-04-17 | 2003-04-14 | Distributor for a liquid product |
| PCT/FR2003/001182 WO2003086650A1 (en) | 2002-04-17 | 2003-04-14 | Distribution pump for a liquid product |
| AU2003262156A AU2003262156A1 (en) | 2002-04-17 | 2003-04-14 | Distribution pump for a liquid product |
| DE60301572T DE60301572T2 (en) | 2002-04-17 | 2003-04-14 | DISTRIBUTION PUMP FOR MEDIA |
| US10/414,290 US6698623B2 (en) | 2002-04-17 | 2003-04-16 | Fluid dispenser pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0204809A FR2838783B1 (en) | 2002-04-17 | 2002-04-17 | FLUID PRODUCT DISPENSING PUMP |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2838783A1 true FR2838783A1 (en) | 2003-10-24 |
| FR2838783B1 FR2838783B1 (en) | 2004-07-09 |
Family
ID=28686135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0204809A Expired - Lifetime FR2838783B1 (en) | 2002-04-17 | 2002-04-17 | FLUID PRODUCT DISPENSING PUMP |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1497039B1 (en) |
| JP (1) | JP4295121B2 (en) |
| CN (1) | CN1646231B (en) |
| AU (1) | AU2003262156A1 (en) |
| DE (1) | DE60301572T2 (en) |
| FR (1) | FR2838783B1 (en) |
| WO (1) | WO2003086650A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009006428B4 (en) * | 2009-01-23 | 2011-06-22 | Ing. Erich Pfeiffer GmbH, 78315 | discharge |
| FR2973015A1 (en) * | 2011-03-25 | 2012-09-28 | Valois Sas | FLUID PRODUCT DELIVERY PUMP. |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2862106B1 (en) * | 2003-11-07 | 2007-08-24 | Valois Sas | FLUID PRODUCT DELIVERY PUMP. |
| GB0610666D0 (en) * | 2006-05-30 | 2006-07-05 | Glaxo Group Ltd | Fluid dispenser |
| CN103721881B (en) * | 2013-12-13 | 2016-06-29 | 中山市美捷时包装制品有限公司 | The aerosol apparatus of mouth structure grabbed by a kind of band easy to connect |
| CN107934182A (en) * | 2017-12-22 | 2018-04-20 | 余姚晟祺塑业有限公司 | A kind of new type nozzle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0614702A2 (en) * | 1993-03-08 | 1994-09-14 | SPRÜHVENTILE GmbH | Fluid pump dispenser for pharmaceutical applications |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5697530A (en) * | 1996-01-29 | 1997-12-16 | Monturas, S.A. | Precompression pump sprayer |
| FR2764005B1 (en) * | 1997-05-29 | 2004-12-10 | Sofab | ARTICULATED PISTON PUMP |
-
2002
- 2002-04-17 FR FR0204809A patent/FR2838783B1/en not_active Expired - Lifetime
-
2003
- 2003-04-14 DE DE60301572T patent/DE60301572T2/en not_active Expired - Lifetime
- 2003-04-14 JP JP2003583649A patent/JP4295121B2/en not_active Expired - Fee Related
- 2003-04-14 CN CN03808560.7A patent/CN1646231B/en not_active Expired - Fee Related
- 2003-04-14 AU AU2003262156A patent/AU2003262156A1/en not_active Abandoned
- 2003-04-14 EP EP03740604A patent/EP1497039B1/en not_active Expired - Lifetime
- 2003-04-14 WO PCT/FR2003/001182 patent/WO2003086650A1/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0614702A2 (en) * | 1993-03-08 | 1994-09-14 | SPRÜHVENTILE GmbH | Fluid pump dispenser for pharmaceutical applications |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009006428B4 (en) * | 2009-01-23 | 2011-06-22 | Ing. Erich Pfeiffer GmbH, 78315 | discharge |
| FR2973015A1 (en) * | 2011-03-25 | 2012-09-28 | Valois Sas | FLUID PRODUCT DELIVERY PUMP. |
| WO2012131234A1 (en) * | 2011-03-25 | 2012-10-04 | Aptar France Sas | Pump for dispensing a fluid material |
| US9364842B2 (en) | 2011-03-25 | 2016-06-14 | Aptar France Sas | Pump for dispensing a fluid material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1646231B (en) | 2010-09-29 |
| CN1646231A (en) | 2005-07-27 |
| DE60301572D1 (en) | 2005-10-13 |
| EP1497039B1 (en) | 2005-09-07 |
| FR2838783B1 (en) | 2004-07-09 |
| WO2003086650A1 (en) | 2003-10-23 |
| JP2005526603A (en) | 2005-09-08 |
| AU2003262156A1 (en) | 2003-10-27 |
| DE60301572T2 (en) | 2006-06-22 |
| JP4295121B2 (en) | 2009-07-15 |
| EP1497039A1 (en) | 2005-01-19 |
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