EP0707894B1 - Miniatur-Vordruckpumpe - Google Patents

Miniatur-Vordruckpumpe Download PDF

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Publication number
EP0707894B1
EP0707894B1 EP95402284A EP95402284A EP0707894B1 EP 0707894 B1 EP0707894 B1 EP 0707894B1 EP 95402284 A EP95402284 A EP 95402284A EP 95402284 A EP95402284 A EP 95402284A EP 0707894 B1 EP0707894 B1 EP 0707894B1
Authority
EP
European Patent Office
Prior art keywords
valve
pump according
nozzle
piston
clack 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
EP95402284A
Other languages
English (en)
French (fr)
Other versions
EP0707894A1 (de
Inventor
Alain Behar
Marcel Eudes
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.)
Silgan Dispensing Systems Le Treport SAS
Original Assignee
Rexam Sofab
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 Rexam Sofab filed Critical Rexam Sofab
Priority to SI9530453T priority Critical patent/SI0707894T1/xx
Publication of EP0707894A1 publication Critical patent/EP0707894A1/de
Application granted granted Critical
Publication of EP0707894B1 publication Critical patent/EP0707894B1/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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—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

Definitions

  • the nozzle of the pump described in EP-A-0 536 617 has, in addition, in the upper part an internal shoulder (33), its end lower widening on the contrary under the collar in a collar (30) on which fits by its upper edge (25) a socket (21) which externally serves as a seal for the piston, delimiting under the nozzle collar an interior chamber (26) where the valve exhaust is housed, its base (22) pierced with an axial orifice (23) serving as an annular seat for said valve.
  • the object of the invention is to reach a better compromise by reconciling softness and precision, based on the fact that the improvement of manufacturing techniques and in particular of precision in the execution of parts now allows us to return to the use of an internal valve while eliminating both its drawbacks initials and the impression of double relaxation created by a dead race excessive.
  • the seat of said valve takes the form of a bowl whose seat is connected by a rounded fillet to a flared belt;
  • the flap has a fairly thin bell-shaped bell turned downward, with an edge having a substantially perimeter in the free state equal to or barely greater than that of the leave and bringing to rest on the base, applied tightly on the seat and in the corner of the bowl under the effect of the valve return spring.
  • the active surface of the valve is then minimal.
  • the edge will preferably have a more curvature stronger than that of said leave.
  • valve intake closes: pressure increases in pump and plate first the lip against the waist of the bowl, strengthening its sealing; beyond a certain threshold, it tends to raise the valve exhaust, pushing its tightness towards the corner: this last effect causes an increase in the area of this valve subject to fairly significant pressure, due to the small dimensions of the pump, to suddenly give up its return spring.
  • valve lip does not allow it to widen to follow the flared wall of the bowl only on one very short distance, less than the total height of the belt; immediately as it leaves this wall, it almost returns to its original perimeter because most of the pressure is transmitted to the emitting nozzle, and the valve tends to come back down, providing product flow along the oblique belt a narrow lateral passage whose section varies with its residual lifting; this passage is preceded by a convergent which repels downstream the pressure drops, centering the exhaust valve and stabilizing both its position and the pressure available on the orifice of the nozzle.
  • valve in the enlarged chamber formed by the socket under the nozzle collar gives it a rest minimum cross-section at least equal to that of the nozzle channel and raised, a maximum cross section at least double, of the order of one third or at least a quarter of that of the piston in the pump body, so that it becomes possible to provide the exhaust valve with a comes out reasonably strong; flaring the belt minimizes uncontrollable effects of friction; displacement of the piston required to open the valve is about three times lower than the his own therefore almost negligible.
  • This construction results in a flexibility of operation which avoids harmful reactions from the user and if necessary, allows very frank spraying.
  • the total height of the bowl does not have to exceed the lifting of the valve, i.e. a few tenths of a millimeter, for a slope average flare close to 0.3 and preferably increasing from connection of the fillet upwards to give its wall an S-profile.
  • small lateral space available as the concern to reduce dead volumes and avoid sudden variations in the cross sections advantageously lead to place his belt plumb or almost from the side wall of the chamber, also circular, to form a channel flaring slightly upwards.
  • the pump of FIG. 1 has a body 1 provided with a lower outlet provided with an intake tube 11 and controlled by an intake valve whose ball valve 12 is trapped in a cage 13 carrying internal stops 14 and of a greater range 15 with radial grooves.
  • the piston consists of a sleeve 2 assembled on a hollow rod 3 .
  • the side wall of the sleeve 2 seals on the pump body by means of two flexible lips 21 turned in opposite directions and its base 22 , pierced with an axial orifice 23 , creates on its upper face an annular bearing 24 in bowl with flared belt.
  • the hollow rod 3 carries at its lower part a collar 30 which, in the example shown, is formed of two concentric flanges 31 and 32 that separate a groove where the upper edge 25 of the sleeve comes to fit.
  • This rod forms a nozzle and, internally generating a shoulder 33 , its upper end narrows externally to a standardized diameter allowing it to fit a common type pusher, not shown, usually equipped with a spray nozzle.
  • the base 22 delimits downwards inside the socket 2 , under the collar 30 , a chamber 26 which receives an exhaust valve 4 in the form of a lip bell 40 facing downwards.
  • a spring 5 compressed between two opposing bearing surfaces of the cage 13 and the sleeve 2 returns the piston upwards.
  • a flange 6 encloses the whole of this mechanism inside the pump body, allowing the nozzle 3 to pass; in the figure it is a metal cup set on the rim 16 of the body; it will then be crimped a second time, by the conditioner, its seal 61 in tight clamping on a bottle, not shown, containing the product.
  • the spring 5 presses the piston against the collar 6 ; in the current example, the internal clearance left by the seal 61 and grooves 17 on the rim 16 of the body 1 provide a vent between the container and the atmosphere along the nozzle 3 ; it is the shoulder formed by the collar 30 thereof which comes to seal in abutment on a seal 62 ; any action on the pusher will open this communication to rebalance the pressure.
  • valve has two axial pins opposites which facilitate mounting.
  • the upper pin 42 reduces the dead volumes and guides the spring 41 ; at birth, a bearing 43 supports the latter, preferably grooved to also facilitate the passage of the product, it can serve as a stop.
  • the lower spindle 44 comes at the end of the lower stroke of the piston, a little before the base 22 , abuts against the bearing surface 15 of the cage 13 , conventionally causing the forced opening of the valve 4 to facilitate priming at the start of use, the return of the piston to the rest position then causing a product suction as soon as the spring 41 , again free, closes the exhaust.
  • the bowl 24 draws around the orifice 23 , with a diameter of 1.6 mm, a narrow annular seat 27 that a fillet 28 of 0.2 mm radius drawing a torus 2 mm in average diameter connects to a flared belt 29 to the profile in an arc of a height of 0.4 mm; from the bottom to the top the slope of this belt increases from 0.25 to 0.7 approximately.
  • the lip 40 of the valve 4 ends in a semicircular edge of 0.15 mm radius drawing a torus of 2.1 mm in average diameter which, in the free state comes to touch the wall at the bottom of the belt, its center in the position marked A shown in solid lines.
  • the lip 40 then takes off, the valve delivering passage to the flow: given the low dead volumes, the pressure drop is immediately balanced between the orifice it has just opened and that of the spray nozzle, so that the lip tightens and that the valve descends to an equilibrium position E (shown in dotted lines) which leaves opposite the flared belt 29 a narrow neck towards which the flow converges and then gradually diverges. At the end of use, it remains open at first under the effect of pin 44 and will not return to position B until the user stops his effort.
  • the path inside the bowl 24 is a cycle diagrammed in F with dotted lines.
  • FIG. 3 gives an example of an acceptable variant, in which the belt 29 has a constant slope of 0.3 and the seat 27 a conical shape increasing at rest the contact surface, compensated by an internal angle cut down on the edge of lip 40 . It leads to a slightly higher valve lift but also allows smooth operation and very frank spraying.

Landscapes

  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
  • Rotary Pumps (AREA)
  • Closures For Containers (AREA)

Claims (8)

  1. Eine Minipumpe mit zylindrischem Hauptstück (1), versehen mit einem Einlassventil (12), wobei ein Flansch (6) gegen die Wirkung einer Wendelfeder (5) einen beweglichen Kolben mit einer Düse (3), der den Flansch durchsetzt, einschließt, mit einem axialen Kanal, verschlossen durch ein Auslassventil mit innerer Klappe (4), austariert durch eine innere Feder (41), und mit einer inneren Schulter (33) im oberen Teil, wohingegen sich der untere Teil der Düse (3) unter dem Flansch in einen Kragen (30) verbreitert, an den sich eine Hülse (21) mit ihrem oberen Rand (25) anfügt, die außen als Kolbendichtung dient, wobei unter dem Kragen der Düse eine innere Kammer (26) begrenzt ist, wo sich die Auslassklappe befindet, wobei der Sockel (22) der Hülse mit einer axialen Öffnung (23) versehen ist, die als ringförmiger Sitz für besagte Klappe dient,
       dadurch gekennzeichnet, dass der Sitz die Form einer Schale (24) aufweist, deren Grundplatte (27) durch eine gerundete Kehle (28) mit einem aufgeweiteten Gürtel (29) verbunden ist, wobei die Klappe die Form einer Glocke mit einer ziemlich dünnen Lippe (40), die nach unten gerichtet ist, aufweist, mit einem Umfang, der im freien Zustand etwa dem der Kehle entspricht oder geringfügig größer ist, im Ruhezustand auf dem Sockel (22) aufliegend, dichtend appliziert auf die Grundplatte und im Winkel der Schale unter der Wirkung der Abreißfeder (41) der Klappe.
  2. Pumpe nach Anspruch 1, dadurch gekennzeichnet, dass die Auslassklappe (4) einen minimalen Wirkungsquerschnitt, der zumindest dem des Kanals der Düse (3) entspricht, und einen maximalen doppelt so großen Wirkungsquerschnitt aufweist.
  3. Pumpe nach Anspruch 2, dadurch gekennzeichnet, dass die Klappe einen maximalen Wirkungsquerschnitt aufweist, der zumindest ein Viertel des Wirkungsquerschnitts des Kolbens im Pumpenhauptstück ist.
  4. Pumpe nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Elastizität der Lippe es dieser lediglich ermöglicht, der ausgeweiteten Wand des Gürtels (29) auf einem Weg zu folgen, der kürzer als ihre Gesamthöhe ist.
  5. Pumpe nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Schale (24) eine Höhe von einigen Zehntelmillimetern bei einer mittleren Aufweitungsneigung ihres Gürtels von annähernd 0,3 aufweist.
  6. Pumpe nach Anspruch 5, dadurch gekennzeichnet, dass die Neigung des Gürtels (29) von der Verbindung mit der Kehle (28) nach oben ansteigt und so seiner Wand ein S-Profil gibt.
  7. Pumpe nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Kante der Lippe (40) eine stärkere Krümmung als die der besagten Kehle (28) aufweist.
  8. Pumpe nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Grundplatte (27) der Schale eine konische Form aufweist.
EP95402284A 1994-10-19 1995-10-13 Miniatur-Vordruckpumpe Expired - Lifetime EP0707894B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9530453T SI0707894T1 (en) 1994-10-19 1995-10-13 Miniature precompression pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9412460 1994-10-19
FR9412460A FR2726045B1 (fr) 1994-10-19 1994-10-19 Pompe miniature a precompression

Publications (2)

Publication Number Publication Date
EP0707894A1 EP0707894A1 (de) 1996-04-24
EP0707894B1 true EP0707894B1 (de) 2000-08-16

Family

ID=9467987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95402284A Expired - Lifetime EP0707894B1 (de) 1994-10-19 1995-10-13 Miniatur-Vordruckpumpe

Country Status (10)

Country Link
US (1) US5671874A (de)
EP (1) EP0707894B1 (de)
AT (1) ATE195440T1 (de)
CA (1) CA2160826C (de)
DE (1) DE69518379T2 (de)
DK (1) DK0707894T3 (de)
ES (1) ES2151035T3 (de)
FR (1) FR2726045B1 (de)
PT (1) PT707894E (de)
SI (1) SI0707894T1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2891497A (en) * 1996-09-20 1998-04-14 Fritz Meckenstock Outlet valve, especially for a hand pump, and the pump
DE29717034U1 (de) 1997-09-23 1999-01-28 Josef Wischerath Gmbh & Co. Kg, 50259 Pulheim Spenderpumpe, Spender und Spender-Baukastensystem
US6170713B1 (en) * 1998-10-28 2001-01-09 Emson, Inc. Double spring precompression pump with priming feature
FR2806330B1 (fr) * 2000-03-20 2002-10-25 Valois Sa Organe de distribution a clapet de sortie forme par un piston differentiel
FR2838784B1 (fr) * 2002-04-17 2004-07-09 Valois Sa Pompe de distribution de produit fluide
FR2840890B1 (fr) * 2002-06-14 2004-10-15 Valois Sa Organe de fixation et distributeur de produit fluide comprenant un tel organe de fixation
FR2878002B1 (fr) * 2004-11-16 2011-01-21 Valois Sas Pompe de distribution de produit fluide et distributeur comportant une telle pompe de distribution.
US8986253B2 (en) 2008-01-25 2015-03-24 Tandem Diabetes Care, Inc. Two chamber pumps and related methods
US8408421B2 (en) 2008-09-16 2013-04-02 Tandem Diabetes Care, Inc. Flow regulating stopcocks and related methods
CA2737461A1 (en) 2008-09-19 2010-03-25 Tandem Diabetes Care, Inc. Solute concentration measurement device and related methods
US8926561B2 (en) 2009-07-30 2015-01-06 Tandem Diabetes Care, Inc. Infusion pump system with disposable cartridge having pressure venting and pressure feedback
DE102010045059A1 (de) 2010-09-10 2012-03-15 F. Holzer Gmbh Dosiervorrichtung
DE102010048986A1 (de) * 2010-10-20 2012-04-26 Ursapharm Arzneimittel Gmbh Dosierpumpe
KR101233080B1 (ko) * 2011-09-20 2013-02-14 (주)연우 스프레이 펌프
US9180242B2 (en) 2012-05-17 2015-11-10 Tandem Diabetes Care, Inc. Methods and devices for multiple fluid transfer
US9173998B2 (en) 2013-03-14 2015-11-03 Tandem Diabetes Care, Inc. System and method for detecting occlusions in an infusion pump
CN106837774B (zh) * 2016-12-26 2019-05-14 卢小平 一种微型活塞泵

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257961A (en) * 1964-04-23 1966-06-28 Holmes T J Co Pump
US3583605A (en) * 1969-01-17 1971-06-08 Diamond Int Corp Liquid dispensing pump
US4154374A (en) * 1977-10-03 1979-05-15 Ethyl Products Company Finger operated spray pump
US4252507A (en) * 1979-09-10 1981-02-24 Seaquist Valve Company Hand-actuatable pump assembly
IT1134954B (it) * 1981-01-07 1986-08-20 Sar Spa Pompa ad azionamento manuale per la erogazione sotto pressione di sostanze liquide e/o dense racchiuse in un contenitore sul quale la pompa e' montata
IT8421596U1 (it) * 1984-04-19 1985-10-19 S A R Spa Pompetta a mano per dispensare sotto pressione liquidi micronizzati
ES2011140A6 (es) * 1988-10-10 1989-12-16 Monturas Sa Bomba pulverizadora.
IT1251684B (it) * 1991-10-11 1995-05-19 Carlo Mancini Pompetta ad azionamento manuale per dispensare sostanze liquide o cremose a pressione costante e prestabilita.

Also Published As

Publication number Publication date
FR2726045B1 (fr) 1997-01-10
FR2726045A1 (fr) 1996-04-26
ATE195440T1 (de) 2000-09-15
US5671874A (en) 1997-09-30
CA2160826A1 (en) 1996-04-20
EP0707894A1 (de) 1996-04-24
ES2151035T3 (es) 2000-12-16
DE69518379T2 (de) 2001-03-15
DE69518379D1 (de) 2000-09-21
DK0707894T3 (da) 2001-01-02
PT707894E (pt) 2001-02-28
SI0707894T1 (en) 2001-02-28
CA2160826C (en) 2008-03-11

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