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EP1497039B1 - Abgabepumpe für medien - Google Patents

Abgabepumpe für medien Download PDF

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Publication number
EP1497039B1
EP1497039B1 EP03740604A EP03740604A EP1497039B1 EP 1497039 B1 EP1497039 B1 EP 1497039B1 EP 03740604 A EP03740604 A EP 03740604A EP 03740604 A EP03740604 A EP 03740604A EP 1497039 B1 EP1497039 B1 EP 1497039B1
Authority
EP
European Patent Office
Prior art keywords
valve
pump
head
fluid
outlet valve
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 - Lifetime
Application number
EP03740604A
Other languages
English (en)
French (fr)
Other versions
EP1497039A1 (de
Inventor
Ludovic Petit
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valois SAS filed Critical Valois SAS
Publication of EP1497039A1 publication Critical patent/EP1497039A1/de
Application granted granted Critical
Publication of EP1497039B1 publication Critical patent/EP1497039B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05B11/1016—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
    • 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

Definitions

  • the present invention relates to a product dispensing pump fluid, and more particularly a manually operated pump for Dispense a dose of fluid every time you operate.
  • Pumps and in particular so-called dosing pumps, which dispense a dose of product at each actuation, are well known in the state of the technical. They are generally used to dispense fluid, such as as pharmaceuticals, cosmetics, perfume or the like.
  • a pump generally comprises a pump chamber defined between an inlet valve of the pump chamber and an outlet valve of the chamber pump. When actuated, the inlet flap is closed automatically, and after a while, the outlet valve is opened allowing the expulsion of the product contained in the pump chamber.
  • the outlet valve is then mechanically opened, preferably at the end of actuation, when the dose is complete, to open the passage and allow the expulsion of the product contained in the pump chamber.
  • a pump is particularly described in EP0614702 and in the French patent application FR 00-13569, filed on October 23, 2000.
  • the outlet valve being biased during actuation of the pump towards its closing position by the pressure of the product, then open mechanically to permit the expulsion of this product, there is a risk that the flow of fluid product out of the pump chamber after opening the outlet valve returns it to its closed position, so that the distribution of the dose of product may be incomplete. Reproducibility of the dose is not so not certain.
  • the present invention aims to provide a dispensing pump of fluid product that does not reproduce the aforementioned disadvantages.
  • the present invention thus aims to provide a pump of fluid distribution which guarantees the total distribution of each dose of fluid product with each actuation of the pump.
  • Another object of the present invention is to provide a pump for fluid dispensing that is simple and inexpensive to manufacture and to assemble.
  • the subject of the present invention is therefore a pump for dispensing fluid product manually operated to dispense a dose of fluid each actuation, said pump comprising a pump body containing a pump chamber and a return spring resiliently biasing the pump towards its rest position and automatically returning it to this position of rest after each actuation, said pump chamber having a outlet valve, said outlet valve being, during actuation of the pump, biased by the pressure of the product towards a closed position and being open mechanically by a valve control element at the end of actuation, when the dose is complete, characterized in that the pump comprises valve locking means for holding the outlet valve in position open during the expulsion of the product from the pump chamber, for to prevent the flow of the fluid product from closing the said front outlet valve the expulsion of the entire dose of fluid product, said outlet valve being mechanically closed at the end of expulsion of the fluid product by said element of valve control, under the effect of said return spring of the pump.
  • the pump chamber is defined between a first piston and a second piston.
  • valve blocking means consist of a jamming of the outlet flap in the open position.
  • said outlet valve comprises a valve member and a valve seat, said valve member having a valve head cooperating in a sealed manner with said valve seat in the closed position of the valve, and a valve body extending axially from said head of valve, the diameter of said valve body being smaller than the diameter of said head, said valve body having, on the opposite side to said valve head, a foot valve having a diameter greater than the diameter of said valve body, the valve control member being slidably mounted around said body of valve and cooperating mechanically with said valve foot to open the valve outlet, and with said valve head for closing the outlet valve.
  • valve seat is formed in said first piston, said valve head being frictionally inserted into said first piston, a force greater than said friction force being required to move said valve head with respect to said valve seat between its closed positions and opening.
  • valve seat is formed by an annular surface radial approximately perpendicular to the central axis of the pump and surrounding the entrance an expulsion channel connecting the pump chamber to a dispensing orifice, said valve head cooperating with said radial annular surface by via a respective radial surface.
  • the first piston comprises an axial sleeve in which slides said valve head, the internal diameter of said axial sleeve being slightly smaller than the outer diameter of said valve head for define said friction force, and therefore the force required to move said valve head with respect to said valve seat.
  • said axial sleeve comprises stop means, such as a radial shoulder, to define the opening position of said head of valve.
  • the surface of said axial sleeve on which slides said valve head is at least partially frustoconical.
  • said valve head comprises means of passage product, such as one or more opening (s) on the periphery of the said valve head.
  • the present invention also relates to a dispensing device fluid product comprising a pump as described above.
  • 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 “piston top “and a second piston 30 called” low piston ", 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 valve seat suitable.
  • the top piston 20 slides advantageously in a portion of pump body of larger diameter, and the lower piston 30 slides in one more pump body part small diameter. This is conventional for this type of pump.
  • the pump comprises in addition to a return spring 50 which resiliently urges the pump towards its position resting position shown in Figure 1, and which automatically returns to this rest position after each actuation.
  • the return spring 50 is disposed between the pump body and the valve seat input 80, but any other positioning of the return spring 50 is also possible.
  • the outlet valve 40 is made so that during the 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 open by a valve control member 60 at the end when the dose is complete.
  • This control element of valve 60 cooperates on the one hand with the outlet valve 40, and on the other hand with the piston low 30 or an integral element thereof.
  • the pump comprises valve locking means to keep the outlet valve 40 in the open position during the expulsion of the produced outside the pump chamber 11. In this way, it is avoided that the flow of the fluid from the pump chamber 11 does not close the outlet valve 40 before the entire dose contained in said chamber pump 11 has been expelled. Closing the outlet valve 40 is then performed mechanically, at the end of expulsion of the fluid product, by said element valve control 60 under the effect of the return spring 50 of the pump.
  • the outlet valve blocking means consist of a jamming of the outlet valve 40 in the open position, as will be described hereinafter with reference to an advantageous embodiment of the present invention.
  • FIGS 1 to 4 show an advantageous embodiment of the present invention.
  • the outlet valve 40 comprises a valve element 41 which cooperates with a valve seat 42.
  • the element of valve 41 comprises a valve head 43 which cooperates tightly with said valve seat 42 in the closed position of the valve 40.
  • the valve member 41 also comprises a valve body 44 which in the example shown extends axially from said valve head 43.
  • the diameter of the valve body 44 is smaller than the diameter of the valve head 43, and the valve body 44 has on the opposite side to said valve head 43, a foot valve 45 whose diameter is again greater than the diameter of said body of In this way, the valve body 44 defines a central portion of smaller diameter disposed between the valve head 43 and the valve foot 45.
  • valve control member 60 is slidably mounted around said body of valve 44, in particular around said portion of smaller diameter, and cooperates mechanically on the one hand with the valve foot 45 to open the flap of output 40, and secondly with the valve head 43 to close the outlet valve 40. These opening and closing operations of the outlet valve are carried out mechanically by said valve control member 60.
  • valve seat 42 of the outlet valve 40 is formed to inside said first piston 20, or high piston, said valve head 43 being frictionally inserted into said first piston 20.
  • a force greater than said frictional force is required to move said head of valve 43 with respect to said valve seat 42 between these closed positions and opening.
  • the valve seat 42 can be formed by a transverse or radial annular 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.
  • the piston up 20 may be integral with an actuating rod which incorporates the central channel 70 for the expulsion of the product.
  • the valve head 43 cooperates advantageously with said radial annular surface 42 via a respective radial surface 43 '.
  • a particular profile can be provided at level of the interface between said annular radial surfaces 42 and 43 'for promote the sealing of the outlet valve 40 in the closed position.
  • the flapper outlet 40 is thus biased towards its closed position as soon as a pressure is created in the pump chamber 11, which ensures complete sealing of said valve.
  • the top piston 20 comprises an internal axial sleeve 21 in which slides said valve head 43.
  • the inner diameter of said axial sleeve 21 may be slightly less than outer diameter of said valve head 43.
  • the axial sleeve 21 of the top piston 20 may comprise means stop 22, made for example in the form of a continuous radial shoulder or segmented, to define the opening position of said valve head 43.
  • the surface 23 of the axial sleeve 21 on which the head slides valve 43 may be at least partially frustoconical, narrowing between the closed position and the open position, as shown on the FIG. 5.
  • this frustoconical portion 23 can be combined with a abutment shoulder as described above.
  • the valve head 43 may comprise product passage means 48, for example made in the form of one or several aperture (s) that may (vent) be provided on the periphery of said head valve 43.
  • the operation of the pump according to the invention is as follows.
  • the user actuates the pump from its rest position shown on the 1, it urges the actuating rod, which is integral with the upper piston 20, axially downwards in FIG. 1, which creates an overpressure inside the the pump chamber 11.
  • This overpressure automatically closes the valve 80 and causes a displacement of the low piston 30 under the effect of the pressure created inside the pump chamber 11.
  • the diameter of the body of pump in which slides the lower piston being smaller than the diameter of the body of pump in which slides the piston up, the piston down 30 moves faster axially downwards as the top piston 20.
  • the low piston 30 cooperates with the control element 60 via a radial shoulder, so that when the lower piston 30 moves axially, it drive with said valve control member 60.
  • Said element of valve control 60 therefore slides around the valve body 44 of diameter reduced.
  • the valve member 41 moves together with the first piston 20 while the valve control member 60 moves together with the second piston 30, so that the valve control member 60 is moves axially downwardly faster than the valve member 41.
  • the valve control member 60 arrives at the lower end position, in which it cooperates via a shoulder 61 with the foot of valve 45, it will then cause said valve member 41 axially downwards, so that said valve member 41 will peel off the valve seat 42 against which he was pressed by the pressure of the product contained in the chamber of pump 11.
  • valve member 41 moves axially inside the sleeve internal axial axis 21 of the first piston 20 over a short distance A, sufficient to open a passage to the product contained in the pump chamber 11.
  • the product contained in said pump chamber 11 then flows through said passage of produced 48 to said expulsion channel 70 contained within said first piston 20.
  • the shoulder 22 (and / or frustoconical surface 23), which can be provided in the lateral wall of the axial sleeve 21, advantageously defines the positon opening of the outlet valve 40, shown in FIG. schematically in a very exaggerated way in FIGS. 3 and 4, the diameter external of the valve head 43 is greater than the internal diameter of the sleeve axial 21.
  • valve control member 60 is mechanically close the outlet valve 40 by pushing axially the valve member 41 upwardly in sealing contact with the valve seat 42, despite the frictional force existing between the valve head 43 and the sleeve axial 21 of the upper piston 20.
  • the present invention therefore provides a product dispensing pump fluid in which the outlet valve is biased towards its closed position during the entire actuating stroke of the pump, which guarantees a absolute seal at this level, then is mechanically open at the end of race to allow the expulsion of the product contained in the chamber of pump, the distribution of the entire dose contained in the chamber of pump being guaranteed by the fact that the outlet valve can not close again accidentally under the effect of the flow of the product leaving before the end of expulsion of the product contained in the pump chamber.

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  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Claims (11)

  1. Abgabepumpe für ein fluidförmiges Produkt, die von Hand betätigt wird, um eine Dosis des fluidförmigen Produktes bei jeder Betätigung abzugeben, wobei die Pumpe einen Pumpenkörper (10) umfasst, der eine Pumpenkammer (11) und eine Rückholfeder (50) enthält, die In elastischer Weise die Pumpe zu ihrer Ruhelage hin vorspannt und automatisch nach jeder Betätigung In diese Ruhelage zurückholt, wobei die Pumpenkammer (11) ein Ausgangsventil (40) umfasst, wobei dieses Ausgangsventil (40) während der Betätigung der Pumpe durch den Druck des Produktes in eine geschlossene Stellung vorgespannt wird und mechanisch durch ein Ventil-Steuerelement (60) am Ende der Betätigung geöffnet wird, wenn die Dosis vervollständigt ist, dadurch gekennzeichnet, dass die Pumpe Blockiereinrichtungen für das Ventil umfasst, um das Ausgangsventil (40) während des Ausstoßens des Produktes aus der Pumpenkammer (11) In der geöffneten Stellung zu halten, um zu vermeiden, dass das Ausströmen des fluidförmigen Produktes das Ausgangsventil (40) verschließt, bevor die gesamte Dosis des fluidförmigen Produktes ausgestoßen ist, wobei das Ausgangsventil (40) am Ende des Ausstoßens des fluidförmigen Produktes durch das Ventil-Steuerelement (60) unter der Wirkung der Rückholfeder (50) der Pumpe mechanisch geschlossen wird.
  2. Pumpe nach Anspruch 1, bel der die Pumpenkammer (11) zwischen einem ersten Kolben (20) und einem zweiten Kolben (30) eingeschossen ist.
  3. Pumpe nach Anspruch 1 oder 2, bei der die Blockiereinrichtungen für das Ventil aus einem Einklemmen des Ausgangsventils (40) in der geöffneten Stellung bestehen.
  4. Pumpe nach einem der vorhergehenden Ansprüche, bei der das Ausgangsventil (40) ein Ventilelement (41) und einen Ventilsitz (42) umfasst, wobei das Ventilelement (41) einen Ventilkopf (43) aufweist, der in der Verschlussstellung des Ventils (40) in dichter Weise mit dem Ventilsitz (42) zusammenwirkt, und einen Ventilkörper (44), der sich ausgehend von dem Ventilkopf (43) in axialer Richtung erstreckt, wobei der Durchmesser dieses Ventilkörpers (44) kleiner ist, als der Durchmesser des Kopfes (43), wobei der Ventilkörper (44) auf der dem Ventilkopf (43) gegenüberliegenden Seite einen Ventilfuß (45) aufweist, dessen Durchmesser größer als der Durchmesser des Ventilkörpers (44) ist, und wobei das Ventil-Steuerelement (60) um den Ventilkörper (44) herum gleitend montiert ist und mechanisch mit dem Ventilfuß (45) zusammenwirkt, um das Ausgangsventil (40) zu öffnen, und mit dem Ventilkopf (43), um das Ausgangsventil (40) zu schließen.
  5. Pumpe nach Anspruch 4, bei der der Ventilsitz (42) in dem ersten Kolben (20) ausgebildet ist, wobei der Ventilkopf (43) mit Reibung in den ersten Kolben (20) eingesetzt ist, so dass eine Kraft, die größer ist, als diese Reibungskraft, erforderlich ist, um den Ventilkopf (43) bezüglich des Ventilsitzes (42) zwischen seinen Schließ- und Öffnungs-Stellungen zu verschieben.
  6. Pumpe nach Anspruch 5, bei der der Ventilsitz (42) von einer radialen, ringförmigen Oberfläche gebildet wird, die ungefähr senkrecht zur zentralen Achse der Pumpe ist und den Eingang (71) eines Ausstoßkanals (70) umgibt, der die Pumpenkammer (11) mit einer Abgabeöffnung verbindet, wobei der Ventilkopf (43) mit dieser ringförmigen, radialen Oberfläche (42) vermittels einer entsprechenden radialen Oberfläche (43') zusammenwirkt.
  7. Pumpe nach Anspruch 5 oder 6, bei der der erste Kolben (20) eine axiale Buchse (21) umfasst, in welcher der Ventilkopf (43) gleitet, wobei der Innendurchmesser dieser axialen Buchse (21) geringfügig kleiner als der Außendurchmesser des Ventilkopfes (43) ist, um besagte Reibungskraft und somit die Kraft zu definieren, die erforderlich ist, um den Ventilkopf (43) bezüglich des Ventilsitzes (42) zu verschieben.
  8. Pumpe nach Anspruch 7, bei der die axiale Buchse (21) Anschlagseinrichtungen (22), wie z.B. eine radiale Schulter, umfasst, um die geöffnete Stellung des Ventilkopfes (43) zu definieren.
  9. Pumpe nach Anspruch 7 oder 8, bei der die Oberfläche (23) der axialen Buchse (21), auf der der Ventilkopf (43) gleitet, zumindest teilweise stumpfkegelig ist.
  10. Pumpe nach einem der Ansprüche 4 bis 9, bei der der Ventilkopf (43) Durchgangseinrichtungen (48) für das Produkt, wie z.B. eine oder mehrere Öffnungen, umfasst, die auf dem Umfang des Ventilkopfes (43) vorgesehen sind.
  11. Abgabevorrichtung für ein fluldförmiges Produkt, dadurch gekennzeichnet, dass sie eine Pumpe nach einem der vorhergehenden Ansprüche umfasst.
EP03740604A 2002-04-17 2003-04-14 Abgabepumpe für medien Expired - Lifetime EP1497039B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0204809 2002-04-17
FR0204809A FR2838783B1 (fr) 2002-04-17 2002-04-17 Pompe de distribution de produit fluide
PCT/FR2003/001182 WO2003086650A1 (fr) 2002-04-17 2003-04-14 Pompe de distribution de produit fluide

Publications (2)

Publication Number Publication Date
EP1497039A1 EP1497039A1 (de) 2005-01-19
EP1497039B1 true EP1497039B1 (de) 2005-09-07

Family

ID=28686135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03740604A Expired - Lifetime EP1497039B1 (de) 2002-04-17 2003-04-14 Abgabepumpe für medien

Country Status (7)

Country Link
EP (1) EP1497039B1 (de)
JP (1) JP4295121B2 (de)
CN (1) CN1646231B (de)
AU (1) AU2003262156A1 (de)
DE (1) DE60301572T2 (de)
FR (1) FR2838783B1 (de)
WO (1) WO2003086650A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2862106B1 (fr) * 2003-11-07 2007-08-24 Valois Sas Pompe de distribution de produit fluide.
GB0610666D0 (en) * 2006-05-30 2006-07-05 Glaxo Group Ltd Fluid dispenser
DE102009006428B4 (de) * 2009-01-23 2011-06-22 Ing. Erich Pfeiffer GmbH, 78315 Austragvorrichtung
FR2973015B1 (fr) * 2011-03-25 2013-04-26 Valois Sas Pompe de distribution de produit fluide.
CN103721881B (zh) * 2013-12-13 2016-06-29 中山市美捷时包装制品有限公司 一种连接方便带抓口结构的喷雾器
CN107934182A (zh) * 2017-12-22 2018-04-20 余姚晟祺塑业有限公司 一种新型喷头

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69410854T2 (de) * 1993-03-08 1998-10-08 Spruehventile Gmbh Fluidabgabevorrichtung mit Pumpe zur pharmazeutischen Anwendung
US5697530A (en) * 1996-01-29 1997-12-16 Monturas, S.A. Precompression pump sprayer
FR2764005B1 (fr) * 1997-05-29 2004-12-10 Sofab Pompe a piston articule

Also Published As

Publication number Publication date
CN1646231B (zh) 2010-09-29
CN1646231A (zh) 2005-07-27
JP2005526603A (ja) 2005-09-08
FR2838783B1 (fr) 2004-07-09
EP1497039A1 (de) 2005-01-19
WO2003086650A1 (fr) 2003-10-23
DE60301572T2 (de) 2006-06-22
AU2003262156A1 (en) 2003-10-27
JP4295121B2 (ja) 2009-07-15
FR2838783A1 (fr) 2003-10-24
DE60301572D1 (de) 2005-10-13

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