EP0377536B1 - Rückschlagventil zum Zuführen einer Spritzflüssigkeit zu einer Pumpkammer und dessen Verwendung - Google Patents

Rückschlagventil zum Zuführen einer Spritzflüssigkeit zu einer Pumpkammer und dessen Verwendung Download PDF

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Publication number
EP0377536B1
EP0377536B1 EP19900400037 EP90400037A EP0377536B1 EP 0377536 B1 EP0377536 B1 EP 0377536B1 EP 19900400037 EP19900400037 EP 19900400037 EP 90400037 A EP90400037 A EP 90400037A EP 0377536 B1 EP0377536 B1 EP 0377536B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
swelling
tongue
pump
side wall
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
EP19900400037
Other languages
English (en)
French (fr)
Other versions
EP0377536A1 (de
Inventor
Patrick Di Giovanni
Jean-Pierre Lina
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
Priority to AT90400037T priority Critical patent/ATE90888T1/de
Publication of EP0377536A1 publication Critical patent/EP0377536A1/de
Application granted granted Critical
Publication of EP0377536B1 publication Critical patent/EP0377536B1/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
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B05B11/1025—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem a spring urging the outlet valve in its closed position
    • 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
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
    • 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
    • Y10T137/7891—Flap or reed
    • Y10T137/7892—With stop
    • 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]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7908—Weight biased
    • Y10T137/7909—Valve body is the weight
    • Y10T137/7913—Guided head
    • Y10T137/7914—Cage

Definitions

  • the present invention relates to a non-return valve used for the admission into a pump chamber of a liquid to be vaporized. More precisely, this valve is designed to open and close in a particularly reproducible manner from one actuation of the pump to another. It is advantageously used with certain precompression pumps of the kind disclosed by American patent US 4 245 967.
  • a pump cylinder 1 This is how the precompression pump of the prior art is essentially protected by a pump cylinder 1.
  • the throttled end 12 of this cylinder 1 communicates (generally by a dip tube not shown) with the reservoir of liquid to be emitted.
  • a non-return valve in this case comprising a cylindrical seal 3 as well as a sleeve 2 for guiding the seal 3.
  • a piston 5 circulates inside the body 11. It is provided with outer sealing lips 5a. These determine with the non-return valve the pump chamber 19 which is thus isolated in the lower part of the body 11.
  • the piston 5 receives, in a central recess 5b, a rod 4 with a blind inner channel 4a which opens out laterally through an orifice 4b.
  • the rod 4 and the piston 5 are also designed such that a spring 7 allows, by its compression, a relative movement of the rod 4 and the piston 5.
  • the orifice 4b can pass from the position shown in Figure 1, in which it is closed by the piston 5, in a position where it communicates with the pump chamber 19.
  • a return spring 8 which is more flexible than the spring 7 as well as a ring 6 which has the essential function of ensuring a very good seal between the piston 5 and the rod 4.
  • This threshold justifies the designation of precompression pump, because as soon as it is exceeded, the chamber 19 is placed in communication with the outside via the orifice 4b and the channel 4a and the liquid flows. It is then the turn of the spring 8 to compress while the volume of the chamber 19 decreases. The emission of the liquid continues in this way until the base 6a of the ring 6 comes into abutment against the surface of the sleeve 2.
  • the intake valve of the present invention aims to significantly reduce the randomness of its operation, especially in the presence of gas.
  • its seal 3 must be able to return systematically to its place in order to effectively close the communication 13 between the reservoir and the pump chamber 19.
  • the pump cylinder 1 in FIG. 2 is very similar to that used in the prior art which is illustrated in FIG. 1 and mentioned above. The only differences to be noted are located at the base of the body 11, at the place where it is connected to the constricted part 12 of the cylinder 1. In fact, the support cord 1a is not present here. Instead, the base of the body 11 has a smooth inner wall 18. It is however slightly sloping, determining a bowl inclined from 1 to 6 ° approximately.
  • the communication 13 between the reservoir of liquid to be vaporized and the pump chamber 19 also has a different section from that of the prior art. On either side of a cylindrical section, truncated cones widen the communication 13 both on the side of the pump chamber 19 and on the side of the throttled part 12 inside the tank.
  • FIG. 1 the lower part of the pump cylinder 1 has a recess 17 to receive a guide sleeve 2 with a good fit.
  • Figures 3 and 4 show the form adopted in the context of the present invention. It should be emphasized, before continuing with its description, that it is represented here on a scale different from that of FIG. 2. Its scale is also extremely magnified compared to its actual size corresponding more to 6mm in diameter for 4mm in diameter. height.
  • the sleeve 2 in fact admits the appearance of a hollow cylinder having a lower part 21 wider than its upper part 22 (cf. FIG. 3).
  • the sectional recess between these two parts determines a shoulder 23 against which the return spring 8 comes to bear.
  • the interior of the socket 2 likewise has a wider section at the level of the lower part 21 (see recess 29) than at the level of the upper part 22 (see recess 24).
  • a central hole 2a connects all of the recesses.
  • the shape of the internal walls of the lower recess 29 is particularly advantageous in the context of the present invention (cf. FIG. 4).
  • the side wall 28 flares internally towards the base of the sleeve 2 at an angle of approximately 4 °. However, it locally has a small internal bulge 27. On either side of this bulge, it should also be noted that the wall 28 is somewhat less thick.
  • the bottom 26 of the recess 29 is, meanwhile, flat. It also has three protrusions.
  • a tongue 25 diametrically opposite the bulge 27 starts from the side wall 28 and goes to the central hole 2a.
  • the section in FIG. 3 specifies that this tongue 25 is thicker near the hole 2a. Its face inclines for example 15 ° relative to the plane of the bottom 26.
  • two ribs 2b also extend from the side wall 28 to the central hole 2a. They are arranged symmetrically with respect to the diameter passing through the center of the tongue 25 and that of the bulge 27. Their respective axis also makes an acute angle with this diameter (of about 40 ° for example). In the embodiment illustrated in Figure 4, the side wall 28 is slightly thinner along the small arc located between the two ribs 2b.
  • the seal 3 easily returns to the position illustrated in FIG. 7. Indeed, the general flaring of the side wall 28 of the sleeve 2 limits the possible contact surface with the joint 3. The latter therefore does not risk adhering to or catching on the socket and returns more surely against its seat formed by the bowl 18.
  • the present non-return valve for admission into a pump chamber is particularly advantageous when used in combination with both a pump without return air and a deformable container.
  • the pump shown in axial section in Figure 1 includes an air intake.
  • its cylinder 1 is pierced with an opening 14 (also shown in FIG. 2) disposed at a height such that the peripheral sealing lip 5a of the piston 5 is always below it.
  • an opening 14 also shown in FIG. 2 disposed at a height such that the peripheral sealing lip 5a of the piston 5 is always below it.
  • this seal 3 allows the interior of the container to be isolated from the pump chamber.
  • P2 which is much more below atmospheric pressure than the pressure P0 prevailing in the container (
  • P1 the pressure P1 due to its inertia, firstly follows the decrease in the volume of its content so that P0 is maintained in the container throughout the admission.
  • the pressure P0 tends to equalize on either side of the joint, the envelope seeks to resume its original shape. This results in increasing the depression in the container where a pressure P1 is established such that
  • the seal 3 is therefore sucked against the bowl 18 while it helps maintain P0 in the pump chamber. This has the happy effect of reducing the stress on the sealing lip 5a of the piston 5 which, by its function, is ill-suited to insulation in the event of internal depression.
  • the air-conditioned packaging assembly is then made more efficient.

Landscapes

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

Claims (10)

  1. Rückschlagventil zum Einlaß einer zu zerstäubenden Flüssigkeit in eine Pumpenkammer (19), wobei das Ventil aus der Zusammenwirkung dreier Elemente besteht:
    - eines Pumpenzylinders (1), der innen eine Querschnittsverminderung (12) aufweist, die einen Körper (11) und ein Ende trennt, wobei der Körper die Pumpenkammer schützt, während das Ende mit einem Reservoir der Flüssigkeit in Verbindung steht,
    - einer hohlen Hülse (2), die einen Boden mit einem zentralen Loch (2a) und eine Seitenwand (28) aufweist, die dicht in den Körper eingesetzt werden kann, so daß die Hülse mit der Querschnittsverminderung einen Raum (29) bildet,
    - einer scheibenförmigen Dichtung (3), die mit Spiel in den Raum eingesetzt werden kann,
    dadurch gekennzeichnet, daß
    - die Querschnittsverminderung auf der Seite des Körpers (11) die Form einer Schale (18) geringer Neigung annimmt,
    - die Seitenwand (28) der Hülse (2) sich innen vom Boden (26) der Hülse (2) aus ausweitet und lokal einen Vorsprung (27) aufweist, wobei diese Seitenwand (28) der Hülse (2) auf beiden Seiten des Vorsprungs (27) weniger dick ist,
    - der Boden (26) der Hülse (2) eine Zunge (25) und zwei Rippen (2b) aufweist, wobei die Zunge (25) und die Rippen (2b) sich von der Seitenwand (28) der Hülse (2) bis zum zentralen Loch (2a) der Hülse (2) erstrecken, wobei die Zunge (25) außerdem diametral entgegengesetzt zum Vorsprung (27) liegt und nahe dem zentralen Loch (2a) der Hülse (2) dicker ist, wobei die Rippen (2b) außerdem in Bezug auf den durch den Vorsprung (27) und die Zunge (25) verlaufenden Durchmesser symmetrisch angeordnet sind, so daß sie mit diesem Durchmesser auf beiden Seiten des Vorsprungs (27) einen spitzen Winkel bilden.
  2. Ventil nach Anspruch 1, dadurch gekennzeichnet, daß die Neigung der Schale (18) zwischen 1 und 6° liegt.
  3. Ventil nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß die Seitenwand (28) der Hülse (2) sich innen mit einem Winkel von 4° in Bezug auf die Normale zum Boden (26) der Hülse (2) ausweitet.
  4. Ventil nach einem beliebigen der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Seitenwand (28) der Hülse (2) zwischen den Rippen (2b) auf beiden Seiten des Vorsprungs (27) weniger dick ist.
  5. Ventil nach einem beliebigen der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der spitze Winkel zwischen jeder der Rippen (2b) und dem durch den Vorsprung (27) und die Zunge (25) verlaufenden Durchmesser etwa 40° beträgt.
  6. Ventil nach einem beliebigen der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Zunge (25) eine in Bezug auf den Boden (26) der Hülse (2) um 15° geneigte Fäche aufweist.
  7. Ventil nach einem beliebigen der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Dichtung (3) aus einem Elastomer oder einem Plastomer besteht, das in Gegenwart von Flüssigkeiten anschwillt, wobei die Volumenvergrößerung der Dichtung (3) bis zu 10% erreichen kann.
  8. Ventil nach einem beliebigen der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Dichtung (3) aus einem mit Ballast versehenen Elastomer oder Plastomer besteht, so daß ihre Masse ausreichend ist, um eine Schwerkraftverschiebung der Dichtung (3) in ihrem Sitz zu bewirken.
  9. Verwendung des Ventils nach einem beliebigen der vorgehenden Ansprüche, dadurch gekennzeichnet, daß der Körper (11) des Pumpenzylinders (1) eine Vorverdichtungspumpe aufnimmt.
  10. Verwendung nach Anspruch 9, dadurch gekennzeichnet, daß die Pumpe ohne Wiederaufnahme von Luft ist und daß die Pumpe dicht auf einem Behälter befestigt ist, der eine verformbare Hülle zur Aufnahme der Flüssigkeit aufweist.
EP19900400037 1989-01-06 1990-01-05 Rückschlagventil zum Zuführen einer Spritzflüssigkeit zu einer Pumpkammer und dessen Verwendung Expired - Lifetime EP0377536B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90400037T ATE90888T1 (de) 1989-01-06 1990-01-05 Rueckschlagventil zum zufuehren einer spritzfluessigkeit zu einer pumpkammer und dessen verwendung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8900127 1989-01-06
FR8900127A FR2642499B1 (fr) 1989-01-06 1989-01-06 Clapet anti-retour pour l'admission dans une chambre de pompe d'un liquide a vaporiser

Publications (2)

Publication Number Publication Date
EP0377536A1 EP0377536A1 (de) 1990-07-11
EP0377536B1 true EP0377536B1 (de) 1993-06-23

Family

ID=9377523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900400037 Expired - Lifetime EP0377536B1 (de) 1989-01-06 1990-01-05 Rückschlagventil zum Zuführen einer Spritzflüssigkeit zu einer Pumpkammer und dessen Verwendung

Country Status (6)

Country Link
US (1) US4966535A (de)
EP (1) EP0377536B1 (de)
JP (1) JP2876326B2 (de)
AT (1) ATE90888T1 (de)
DE (1) DE69002006T2 (de)
FR (1) FR2642499B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665733A1 (fr) * 1990-08-07 1992-02-14 Valois Perfectionnement d'une pompe-doseuse a precompression permettant d'en ameliorer le rendement par admission precoce dans la chambre de pompe.
FR2668958B1 (fr) * 1990-11-13 1994-05-20 Valois Dispositif de pulverisation ou de distribution de produit fluide, a aspiration du produit contenu dans le canal de sortie en fin d'actionnement.
US6068011A (en) 1993-10-13 2000-05-30 Paradis; Joseph R. Control of fluid flow
US5992442A (en) * 1997-05-29 1999-11-30 Urquhart; Edward F. Relief valve for use with hermetically sealed flexible container
US6382204B1 (en) 1999-10-14 2002-05-07 Becton Dickinson And Company Drug delivery system including holder and drug container
FR2800132B1 (fr) 1999-10-26 2002-03-08 Oreal POMPE DESTINEE A EQUIPER UN RECIPIENT, COMPORTANT UNE MEMBRANE ELASTIQUEMENT DEFORMABLE A l'EXTERIEUR DE LA CHAMBRE DE POMPAGE
CN1565754B (zh) * 2003-07-09 2010-10-20 丁要武 高粘料乳液泵
JP4742735B2 (ja) * 2004-09-24 2011-08-10 セイコーエプソン株式会社 液体噴射装置
JP5288615B2 (ja) * 2009-04-30 2013-09-11 大和製罐株式会社 ポンプ式泡吐出容器
JP6629124B2 (ja) * 2016-03-31 2020-01-15 株式会社吉野工業所 吐出容器
GB2576925B (en) * 2018-09-07 2021-01-06 Delphi Tech Ip Ltd A pump module for a dosing system and a non-return valve assembly therefor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245669A (en) * 1964-04-08 1966-04-12 Koch Eng Co Inc Contact apparatus
GB1201870A (en) * 1968-09-05 1970-08-12 Parker Hannifin Corp Fluid valves having a flexible valve member
US3572377A (en) * 1970-03-12 1971-03-23 Robertshaw Controls Co Check valve with restricted bypass flow
US3991914A (en) * 1975-05-29 1976-11-16 The Risdon Manufacturing Company Easily assembled, leakproof liquid dispensing pump
FR2403465A2 (fr) * 1977-09-16 1979-04-13 Valois Sa Pompe manuelle a piston pour distribution ou pulverisation
US4369812A (en) * 1981-02-18 1983-01-25 Nypro Inc. Control of fluid flow using precisely positioned disc
US4655248A (en) * 1985-12-16 1987-04-07 United Technologies Corporation Check valve
FR2593243B1 (fr) * 1986-01-17 1990-02-16 Aerosol Inventions Dev Pompe a commande manuelle utilisable en toutes positions

Also Published As

Publication number Publication date
US4966535A (en) 1990-10-30
JPH02229564A (ja) 1990-09-12
ATE90888T1 (de) 1993-07-15
FR2642499A1 (fr) 1990-08-03
DE69002006T2 (de) 1994-01-13
FR2642499B1 (fr) 1991-06-14
EP0377536A1 (de) 1990-07-11
DE69002006D1 (de) 1993-07-29
JP2876326B2 (ja) 1999-03-31

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