EP0470906A1 - Vordruckdosierpumpe mit Verbesserung des Wirkungsgrads durch Frühansaugung zur Pumpenkammer - Google Patents

Vordruckdosierpumpe mit Verbesserung des Wirkungsgrads durch Frühansaugung zur Pumpenkammer Download PDF

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Publication number
EP0470906A1
EP0470906A1 EP91402195A EP91402195A EP0470906A1 EP 0470906 A1 EP0470906 A1 EP 0470906A1 EP 91402195 A EP91402195 A EP 91402195A EP 91402195 A EP91402195 A EP 91402195A EP 0470906 A1 EP0470906 A1 EP 0470906A1
Authority
EP
European Patent Office
Prior art keywords
piston
shoulder
pump
valve
skirt
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.)
Withdrawn
Application number
EP91402195A
Other languages
English (en)
French (fr)
Inventor
Jean-Pierre Lina
HERVé PENNANEAC'H
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 EP0470906A1 publication Critical patent/EP0470906A1/de
Withdrawn legal-status Critical Current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
    • B05B11/1001—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
    • B05B11/1018—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element and the controlling element cooperating with means for opening or closing the inlet valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/7888—With valve member flexing about securement
    • Y10T137/789—Central mount

Definitions

  • the present invention relates to a precompression dosing pump of the prior art for emitting an essentially liquid product in the form of an aerosol. More precisely, it relates to an improvement of this pump which notably improves its efficiency (defined by the ratio of the volume of the dose emitted to the volume of the pump chamber). This improvement in fact ensures almost complete filling of the pump chamber by allowing the product to be sucked in there from the first moments of the pump pistons rising. This mechanism also operates here with great reliability.
  • FIG. 1 shows in fact a precompression dosing pump designed according to the principle of the invention of Rudolph Albert described in French patent FR 1 486 396 filed in 1966. This also involves an intake valve more interesting, the design of which is set out in the addition certificate FR 2 305 241 filed in 1975 by the company STEP (Technical Spray Company).
  • this pump comprises in known manner five cylindrical parts intended to be mounted so that their respective axes of revolution are combined.
  • the axis of the assembly is arranged vertically, the intake of the breast of the pump being carried out from the bottom from a reservoir not shown while the emission into the open air takes place by the top.
  • the present invention addresses the same problem as the three patents which have just been mentioned. It solves it, in turn, so that the precompression metering pumps thus perfected operate without risk while remaining inexpensive.
  • a first of said two annular contacts between said closure element and said shoulder is formed on a support cord projecting on said shoulder between said bore and said outer surface of said skirt, a second of said two annular contacts being made on a surface of said shoulder located in the immediate vicinity of said valve stem and recessed with respect to said support bead, said first contact being broken during the opening of said non-return valve at the mouth of said bore while said second contact is permanently maintained, said free space provided around said shoulder being adapted to allow the folding of said closure element towards said valve stem while said first contact is broken.
  • said free space formed around said shoulder is rather constituted by an annular recess of said first piston.
  • said closure element is a plastic ring having a central hole extended on one side by a hollow cylindrical sleeve which is adapted to be threaded around said valve stem and has one end open.
  • said valve seat of said first piston is applied to said open end and axially presses said sleeve against said surface of said shoulder in close proximity to said valve stem.
  • said open end of said sleeve comprises at least one notch, so that its presence does not hinder the passage of the product. It is advantageously bevelled so that there is automatic centering of said first piston on said sleeve.
  • the closure element is a ring integral with a hollow cylindrical sleeve
  • the latter advantageously comprises at least two internal annular reliefs
  • said valve stem then comprising at least one external annular relief intended to take place with a compatible axial clearance with the tolerance of the parts between said two annular reliefs of said sleeve.
  • Said annular reliefs of said sleeve are preferably located at a section of said sleeve enlarged relative to said open end.
  • said free space formed around said shoulder is rather constituted by a cylindrical recess having for axis of revolution said common axis of said parts of said metering pump, said recess extending from said valve seat and having a widening at the level of the enlargement of said sleeve.
  • said bore is a cylindrical channel with an axis parallel to said common axis of said parts of said precompression metering pump. Said recess of said inner surface of said skirt is preferably notched so as to release the start of said bore.
  • differential piston There may be two or three bores in said differential piston. They are then molded with said differential piston.
  • said first piston slides in leaktight manner inside said hollow body thanks to a single peripheral sealing lip oriented towards the pump chamber.
  • said closure element is produced by molding.
  • the thus improved metering pump has further advantages when used in conjunction with a vacuum tank. It is however suitable for this that the respective lengths of said hollow cylinder and of said skirt of said differential piston are such that said sealing lip always remains fitted around said hollow cylinder even when said first piston is in said first position, communication with the pump chamber therefore being possible only by said at least one bore formed in said differential piston.
  • the chamber 23 therefore no longer communicates with the reservoir except by the non-return valve produced according to the invention at the bores 63 of the differential piston 4.
  • the product contained in the reservoir does not risk being brought into contact with the air which has entered the chamber 23 as has just been said. This result is particularly interesting when the good conservation of the product requires to keep it far from the ambient air which could soil it, oxidize it, etc.
  • the present improvement according to the first embodiment is essentially due to the connection produced between the seal 60 and the differential piston 4.
  • the seal 60 is cut from an elastomer so that its central hole initially admits a diameter smaller than that of the valve stem 41.
  • its threading around the valve stem 41 implies a deformation of the seal 60.
  • the resulting concavity is also oriented towards the end of the rod 41 by virtue of two reliefs presented by the surface of the differential piston 4.
  • One of these reliefs (bearing the reference 61) surrounds the rod 41 at a distance such as the shoulder 44 that the seal 60 can be trapped by it.
  • the other relief (bearing the reference 64) is carried by the surface of the shoulder 44 between the bore 63 and the peripheral guide fins 46. It forms a support bead for the seal 60.
  • the air is for example discharged into the reservoir of product to be emitted thanks to the gadroon 25 which locally lifts the lip 43 of the skirt 42.
  • the pressure of the latter ends up actuating differential piston 4, the rod 41 of which is withdrawn from the valve seat 32.
  • a second embodiment of the present improvement uses, instead of the elastomeric seal, a plastic ring.
  • the pump thus improved can then be presented as illustrated in FIG. 8.
  • the corresponding longitudinal section is comparable to that of FIG. 2 relating to the first embodiment of the present improvement. Also, elements playing similar roles in the operation of these two embodiments have they received identical reference numbers.
  • the sleeve 66 does not have a constant diameter. Weaker at its open end, it has a widening 67 approximately halfway up (that is to say opposite the widening 37 of the channel 33 inside the piston 3). Inside the enlarged section are advantageously two annular reliefs 62.
  • the rod 41 is for its part provided with two comparable annular reliefs 61. One takes place for example between the widening 67 of the sleeve 66 and a first relief 62 while the other is located between the two reliefs 62 of the sleeve 66. An axial clearance is also maintained between complementary reliefs. In this way, the buckling occurs only by bloating of the enlarged section of the sleeve 66, which eliminates any risk of deformation of another nature.
  • the ring 60 is in turn forcibly deformed similarly to the joint of the first embodiment.
  • the free end of the sleeve 66 advantageously comprises one or more slots 68 so as not to hinder the flow of the product when it is emitted through the channel 33. It is preferably cut in a bevel so that the piston 3 always remains centered around the sleeve 66.
  • valve stem 41 is now detached from the valve seat 32 while the pressure of the product is applied to the shoulder 44 of the differential piston 4. However, it no longer applies directly to it. It is in fact exerted on the ring 60. If this does not change anything in terms of the operation of the differential piston 4, it also follows good retention of the ring 60 against the shoulder 44. As a result, the sleeve 66 can, while remaining in place on the rod 41, move away from the seat 32 and deliver passage to the product according to the double arrows shown in FIG. 9.
  • the user generally releases his force on the rod 31 of the piston 3.
  • the spring 5 causes the simultaneous ascent of the two pistons well applied to each other at the valve seat 32.
  • the sleeve 66 remains meanwhile compressed axially between this seat 32 and the shoulder 44.
  • the pump chamber 23 increases at the same time in volume and, as it remains at first isolated like what happens in the pump not perfected, a depression develops there. In other words, the pressure of the product is now on the side of the ring facing the reservoir. Also, as soon as the vacuum in the chamber 23 becomes sufficient to allow this pressure (which is none other than that prevailing in the reservoir) to overcome the force of application of the ring 60 on the bead 64 of support, the ring 60 lifts. As shown in FIG.
  • the ring 60 then tends to fall back towards its sleeve 66 while remaining firmly applied against the surface 65 of the shoulder 44 at the root of the rod 41.
  • This intake mechanism continues as long as the pistons 3 and 4 go up into the pump body 2 .
  • the present improvement may possibly provide for the existence of several bores 63. Their number however remains limited to three at most. Indeed, the differential piston 4 is a molded plastic part. The multiplication of the bores 63 would weaken it because of the lower quality of the plastic flow junctions during filling of the mold. As regards the seal or the ring 60, it is also possible to mold them since it is not necessary to respect an extremely precise adjustment dimension with the valve rod 41. Finally, note that the precompression metering pump thus improved can be mounted on a tank not only at atmospheric pressure as has been assumed so far, but also slightly under pressure (for example up to 1.5 bars).
  • This aspect is particularly interesting when the product must not be placed in the presence of air, otherwise it will lose its properties (by contamination or by oxidation). It protects the product in the tank from any contact with the air which has entered the pump chamber 23 as a result of leaks at the level of the sealing lip 34 of the piston 3.

Landscapes

  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP91402195A 1990-08-07 1991-08-06 Vordruckdosierpumpe mit Verbesserung des Wirkungsgrads durch Frühansaugung zur Pumpenkammer Withdrawn EP0470906A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9010076A FR2665733A1 (fr) 1990-08-07 1990-08-07 Perfectionnement d'une pompe-doseuse a precompression permettant d'en ameliorer le rendement par admission precoce dans la chambre de pompe.
FR9010076 1990-08-07

Publications (1)

Publication Number Publication Date
EP0470906A1 true EP0470906A1 (de) 1992-02-12

Family

ID=9399488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91402195A Withdrawn EP0470906A1 (de) 1990-08-07 1991-08-06 Vordruckdosierpumpe mit Verbesserung des Wirkungsgrads durch Frühansaugung zur Pumpenkammer

Country Status (4)

Country Link
US (1) US5176296A (de)
EP (1) EP0470906A1 (de)
JP (1) JPH04234577A (de)
FR (1) FR2665733A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1074479A1 (de) * 1999-08-06 2001-02-07 L'oreal Membranpumpe für Behälter

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9201113A (pt) * 1992-03-30 1993-10-05 Jack Brakarz Aperfeicoamento em micro-bomba atomizadora de liquidos
JPH0669161U (ja) * 1993-03-05 1994-09-27 大和製罐株式会社 ポンプ式泡出し容器
US5388766A (en) * 1993-09-22 1995-02-14 The Procter & Gamble Company High pressure atomization systems for high viscosity products
US6050457A (en) * 1995-12-06 2000-04-18 The Procter & Gamble Company High pressure manually-actuated spray pump
FR2754316B1 (fr) * 1996-10-04 1998-11-13 Teleplastics Ind Pompe a precompression pour la distribution de doses liquides et distributeur la comportant
WO1998025111A1 (es) * 1996-12-05 1998-06-11 Olegnowicz W Jaime Bomba mecanica impelente de liquidos en forma atomizada, con medios de sello no deslizantes
US6186368B1 (en) * 1999-05-26 2001-02-13 Michael Gene Knickerbocker Manually actuated pump assembly
US6921004B1 (en) 2000-05-26 2005-07-26 Michael G. Knickerbocker Manually actuated pump assembly
FR2815611B1 (fr) * 2000-10-23 2003-04-11 Valois Sa Tete de distribution et distributeur de produit fluide comportant une telle tete de distribution
FR2838787B1 (fr) * 2002-04-17 2005-11-04 Valois Sa Pompe de distribution de produit fluide
US6866168B2 (en) 2002-04-17 2005-03-15 Valois Sas Fluid dispenser pump
FR2859460B1 (fr) * 2003-09-10 2005-11-04 Valois Sas Pompe de distribution de produit fluide
FR2885963A1 (fr) * 2005-05-17 2006-11-24 Valois Sas Pompe de distribution de produit fluide, et dispositif de distribution comportant une telle pompe.
US8147226B2 (en) * 2006-02-01 2012-04-03 Black & Decker Inc. Valve assembly for pressure washer pump
US7637395B2 (en) * 2006-08-22 2009-12-29 Hsih Tung Tolling Co., Ltd. Pump with a pressure driving head
RU2466797C2 (ru) 2007-05-30 2012-11-20 Глаксо Груп Лимитед Устройство раздачи текучей среды
US7748576B2 (en) * 2007-07-24 2010-07-06 Hsih Tung Tooling Co., Ltd. Pump assembly with pressable head
NL2015724B1 (en) 2015-11-04 2017-05-24 Gab Eng & Dev B V Storage holder for a dispenser.
NL2016644B1 (en) 2016-04-20 2017-11-07 Gab Eng & Development B V Storage holder for a dispenser
CN107626017B (zh) * 2017-08-16 2019-12-31 深圳博纳精密给药系统股份有限公司 一种滴液装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1406262A (fr) * 1964-08-31 1965-07-16 Blocage automatique de la circulation de gaz ou de liquides
FR2433982A1 (fr) * 1978-08-23 1980-03-21 Mitani Valve Co Ltd Atomiseur a pompe
FR2558214A1 (fr) * 1984-01-18 1985-07-19 Valois Sa Pompes de pulverisation a precompression

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1112531A (en) * 1964-09-24 1968-05-08 Bespak Industries Ltd Improvements in and relating to dispensing pump and valve assemblies
US3991914A (en) * 1975-05-29 1976-11-16 The Risdon Manufacturing Company Easily assembled, leakproof liquid dispensing pump
US4089442A (en) * 1976-09-30 1978-05-16 Ethyl Corporation Accumulative pressure pump
JPS5815021Y2 (ja) * 1977-06-02 1983-03-25 株式会社三谷バルブ 手動噴霧器の噴射装置
FR2612890B1 (fr) * 1987-03-26 1989-12-29 Step Soc Tech Pulverisation Ensemble doseur pour produit pateux ou semi-liquide
IT1205155B (it) * 1987-06-19 1989-03-15 Coster Tecnologie Speciali Spa Dispsotivo con tasto incorporante un mezzo intercettazione,per l'erogazione di liquidi in forma nebulizzata
FR2642499B1 (fr) * 1989-01-06 1991-06-14 Valois Sa Clapet anti-retour pour l'admission dans une chambre de pompe d'un liquide a vaporiser
FR2656901B1 (fr) * 1990-01-08 1993-02-19 Step Soc Tech Pulverisation Perfectionnement d'une pompe-doseuse a precompression pour en ameliorer l'amorcage et garantir sa simplicite d'assemblage.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1406262A (fr) * 1964-08-31 1965-07-16 Blocage automatique de la circulation de gaz ou de liquides
FR2433982A1 (fr) * 1978-08-23 1980-03-21 Mitani Valve Co Ltd Atomiseur a pompe
FR2558214A1 (fr) * 1984-01-18 1985-07-19 Valois Sa Pompes de pulverisation a precompression

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1074479A1 (de) * 1999-08-06 2001-02-07 L'oreal Membranpumpe für Behälter
FR2797255A1 (fr) * 1999-08-06 2001-02-09 Oreal Pompe a membrane pour recipient
US6279785B1 (en) 1999-08-06 2001-08-28 L'oreal Membrane pump for a receptacle

Also Published As

Publication number Publication date
FR2665733A1 (fr) 1992-02-14
US5176296A (en) 1993-01-05
JPH04234577A (ja) 1992-08-24

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