EP1124738A1 - Valve for releasing pressurised liquids - Google Patents

Valve for releasing pressurised liquids

Info

Publication number
EP1124738A1
EP1124738A1 EP99971390A EP99971390A EP1124738A1 EP 1124738 A1 EP1124738 A1 EP 1124738A1 EP 99971390 A EP99971390 A EP 99971390A EP 99971390 A EP99971390 A EP 99971390A EP 1124738 A1 EP1124738 A1 EP 1124738A1
Authority
EP
European Patent Office
Prior art keywords
valve
passage
discharge channel
valve body
release tube
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.)
Granted
Application number
EP99971390A
Other languages
German (de)
French (fr)
Other versions
EP1124738B1 (en
Inventor
Adalberto Coster Tecnologie Speciali S.P.A Geier
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.)
Coster Technologie Speciali SpA
Original Assignee
Coster Technologie Speciali SpA
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 Coster Technologie Speciali SpA filed Critical Coster Technologie Speciali SpA
Publication of EP1124738A1 publication Critical patent/EP1124738A1/en
Application granted granted Critical
Publication of EP1124738B1 publication Critical patent/EP1124738B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44—Valves specially adapted therefor; Regulating devices
    • B65D83/48—Lift valves, e.g. operated by push action

Definitions

  • the invention relates to a valve for dispensing pressurized liquids according to the preamble of claim 1.
  • valves in an aerosol package In addition to the contents and the container, the valve is the most important part of such a pack.
  • the usability of the product depends on the perfect functioning of the valve at all times and under all circumstances. Even if the package has been stored for a long time, the valve must deliver the product correctly and in the specified spray pattern when it is operated for the first time. Otherwise the entire package and its contents are unusable.
  • valves for an aerosol package usually consist of a valve body, a delivery tube and an annular seal.
  • the valve body can be fastened in a fluid-tight manner on the edge of a lid opening formed in a lid for a container opening.
  • the dispensing tube is axially displaceably mounted in the valve body and can be moved out of a closed position against the action of an elastic element, in particular a helical compression spring.
  • the ring seal is located between the edge of the lid opening and the valve body and tightly encloses the dispensing tube.
  • the ring seal consists of an elastic sealing material, preferably rubber or the like.
  • Inside the discharge tube is a discharge channel formed, which has a lateral opening, in particular bore, which is closed on the outside in the closed position by the ring seal.
  • the lateral opening or bore is released from the ring seal, so that a medium under pressure in the container through the valve body, the lateral bore and the discharge channel of the dispensing tube through to the outside can escape.
  • FIG. 3 shows a valve according to the prior art in longitudinal section.
  • the valve is mounted on a cover 11, with which a corresponding opening of a container, not shown, for receiving a medium under pressure can be closed.
  • the lid 11 has a central opening 12 for receiving a dispensing tube 13 which extends into a valve body 15 on the inside of the container.
  • the valve body 15 is fixed to the edge 16 of the lid opening 12 in a fluid-tight manner.
  • the valve body 15 has a radially outwardly extending circumferential flange which, in the assembled state, is engaged behind by a radially inwardly extending annular projection on the cover 11 in such a way that the valve body 15 is held in a clamped manner by the cover 11.
  • a flat ring seal 20 is arranged in such a way that it closely surrounds the dispensing tube 13.
  • the ring seal 20 consists of an elastic and corrosion-resistant material.
  • the dispensing tube 13 is axially displaceably mounted in the valve body 15, specifically from a closed position shown in FIG. 3 against the action of a helical compression spring.
  • an outwardly open and internally closed discharge channel 25 extends in the direction parallel to the longitudinal center axis.
  • a passage 24 extending transversely thereto connects the discharge channel 25 to the outside of the dispensing tube at a height which is in the closed position at the level of the ring seal 20.
  • the ring seal 20 thus closes the outer opening of the passage 24 in the closed position.
  • An axial displacement of the dispensing tube 13 into the interior of the container clears the outer opening of the passage 24 from the ring seal 20.
  • a fluid connection is thus established between the interior of the valve body 15 and the discharge channel 25.
  • the valve of the prior art shown in FIG. 3 has the disadvantage, however, that when the delivery tube 13 is pressed in, the elastic ring seal 20 can be dragged inward with it. The result of this is that the opening of the passage 24 is released by the ring seal 20 later than expected.
  • the dispensing tube 13 must therefore be pressed relatively deep down or into the interior of the container in order to establish the connection from the interior of the container to the discharge channel 25 via the passage 24.
  • the dragging of the seal and the through-opening formed with sharp edges on the outside can damage the sealing material and also separate parts of the seal, as a result of which the function of the valve is impaired and its operating time is shortened.
  • German patent application P 198 26 308.2 (filing date: June 12, 1998) by the same applicant is intended to solve the above-mentioned disadvantages of the prior art in that the passage opening into the discharge channel is directed from the outside inwards to the inside of the container An oblique bore is formed, the outer opening of which lies at least partially below the plane defined by the upper peripheral edge of the ring projection facing the seal. As a result, the outer end of the passage is at least not completely closed by the ring seal.
  • the fluid connection between the discharge channel and the container is established as soon as the ring flange of the sealing ring is only slightly takes off. This happens abruptly when the dispensing tube is only slightly pressed in.
  • An expedient embodiment of P 198 26 308.2 does provide that the outer opening of the oblique bore lies below the plane defined by the upper peripheral edge of the ring projection facing the ring seal.
  • this embodiment requires precise processing and fitting of the valve into the lid of the aerosol container; in addition, because the outer opening of the passage is always open, the ring projection must be exactly sealed with the ring seal, and a slight and unintentional axial displacement of the delivery tube can already lead to an unwanted delivery.
  • the object of the present invention is to provide a valve for dispensing pressurized liquids with which the problems mentioned above can be largely avoided and with which doses which are easily reproducible are possible in a safe manner.
  • the invention relates to a valve according to claim 1 for dispensing pressurized liquids, foams, gels or the like, with a fluid-tight valve body which can be fastened on the edge of a lid opening formed in a lid for a container opening, and a valve body which is axially displaceably mounted in the valve body.
  • ring seal made of rubber or the like comprises an annular flange with an annular projection facing the annular seal for producing a fluid seal between the annular seal and the discharge channel of the dispensing tube, the fluid connection to the discharge channel of the dispensing tube being formed by a passage formed in the dispensing tube and opening into this at the end of the discharge channel inside the container.
  • the outer edge of the passage is blunt, in particular rounded.
  • Figure 1 is an enlarged view of the encircled area of Figure 3 with a passage designed according to the invention with the valve closed ( Figure la) and with the valve opening ( Figure lb).
  • Figure 2 is an enlarged view of the encircled area of Figure 3 with a passage according to the prior art with the valve closed (Figure 2a), and with the valve opening (Figure 2b); and the
  • Figure 3 shows a valve according to the prior art and according to the preamble of claim 1 in longitudinal section
  • FIG. 2 shows that there is a pronounced tendency for the seal 20 to be carried along and squeezed by a non-blunted, essentially sharp-edged opening edge 29 of the passage 24 during the opening process of the valve.
  • the cross-section of the truncated edge of the outer opening of the passage 24 can have any shape that avoids a sharp-edged edge. It can e.g. rounded (preferably bead-like, as shown in Figure 1), beveled or trumpet-shaped.
  • the passage 24 designed according to the invention can e.g. after the production of the delivery tube 13, which usually consists of a suitable plastic, can be formed in a simple manner, e.g. by means of a heated needle, a drill, or similar suitable tools.
  • the passages generally have a diameter of 0.25 to 1.0 mm, preferably 0.27 to 0.5 mm, and a length of 1.0 to 4.0 mm.
  • the radius of a circle adapted to the curvature of the truncation of the outer edge is expediently in the range from 1/3 to 1/2 of the diameter of the passage 24.
  • the passage can be designed as a transverse bore (parallel to the cross-sectional plane of the ring seal) or as an oblique bore (which extends from the outside inwards and from top to bottom), and the outer Opening can be located in the area of the ring seal or also partially below the plane defined by the upper peripheral edge of the ring projection facing the ring seal.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

The invention relates to a valve for releasing pressurised liquids, foams, gels or similar, comprising a valve body (15) which can be fixed in a liquid-tight manner on the edge of a lid opening configured in a lid for a container opening, a small release tube (13) which is mounted in said valve body (15) in such a way that it is axially displaceable (15), and which can be moved out of a closing position against the force of an elastic element, especially a helical pressure spring (21), and a ring seal (20) consisting of rubber or a similar elastic sealing material, which is located between the edge of the lid opening and the valve body (15) in such a way as to tightly encompass the release tube (13). In the closing position of the release tube (13) or valve, the ring seal closes a discharge channel (25) that is formed in the release tube (13) in a fluid-tight manner, the release tube (13) comprising an annular flange (27) with an annular projection (28) facing towards the ring seal (20), for producing a fluid seal between the ring seal (20) and the discharge channel (25) of the release tube (13). The fluid connection to the discharge channel (25) of the release tube (13) is formed by a passage (24) that is configured in the release tube (13) and which opens into the discharge channel (25) at the end of the same inside the container, the outer edge (29) of the passage (24) being truncated, especially rounded.

Description

Ventil für die Abgabe von unter Druck stehenden Flüssigkeiten Valve for dispensing pressurized liquids
Beschreibungdescription
Die Erfindung betrifft ein Ventil für die Abgabe von unter Druck stehenden Flüssigkeiten gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a valve for dispensing pressurized liquids according to the preamble of claim 1.
Im vorliegenden Fall geht es insbesondere um Ventile einer Aerosolpackung. Außer dem Inhalt und dem Behälter ist das Ventil der wichtigste Bestandteil einer solchen Packung. Vom einwandfreien Funktionieren des Ventils zu jeder Zeit und unter allen Umständen hängt die Verwendbarkeit des Produktes ab. Auch wenn die Packung längere Zeit gelagert wurde, muß das Ventil bei der ersten Betätigung das Produkt einwandfrei und im vorbe- stimmten Sprühmuster abgeben. Andernfalls ist die ganze Packung samt Inhalt gebrauchsunfähig.In the present case, it is particularly a question of valves in an aerosol package. In addition to the contents and the container, the valve is the most important part of such a pack. The usability of the product depends on the perfect functioning of the valve at all times and under all circumstances. Even if the package has been stored for a long time, the valve must deliver the product correctly and in the specified spray pattern when it is operated for the first time. Otherwise the entire package and its contents are unusable.
Üblicherweise bestehen derartige Ventile für eine Aerosolpackung aus einem Ventilkörper, einem Abgaberöhrchen und einer Ringdichtung. Der Ventilkörper ist fiuiddicht am Rand einer in einem Deckel für eine Behälteröffnung ausgebildeten Deckelöff- nung befestigbar. Das Abgaberöhrchen ist im Ventilkörper axial verschieblich gelagert und aus einer Schließstellung heraus entgegen der Wirkung eines elastischen Elements, insbesondere einer Schraubendruckfeder, bewegbar. Die Ringdichtung befindet sich zwischen dem Rand der Deckelöffnung und dem Ventilkörper und umschließt dabei eng das Abgaberöhrchen. Die Ringdichtung besteht aus einem elastischen Dichtmaterial, vorzugsweise Gummi oder dgl .. Innerhalb des Abgaberöhrchens ist ein Austragkanal ausgebildet, der eine seitliche Öffnung, insbesondere Bohrung aufweist, die in Schließstellung durch die Ringdichtung außenseitig verschlossen ist. Wird das Abgaberöhrchen gegen die Wirkung des elastischen Elements in das Behälterinnere gedrückt, kommt die seitliche Öffnung bzw. Bohrung von der Ringdichtung frei, so daß ein im Behälter unter Druck stehendes Medium durch den Ventilkörper, die seitliche Bohrung und den Austragskanal des Abgaberöhrchens hindurch nach außen entweichen kann.Such valves for an aerosol package usually consist of a valve body, a delivery tube and an annular seal. The valve body can be fastened in a fluid-tight manner on the edge of a lid opening formed in a lid for a container opening. The dispensing tube is axially displaceably mounted in the valve body and can be moved out of a closed position against the action of an elastic element, in particular a helical compression spring. The ring seal is located between the edge of the lid opening and the valve body and tightly encloses the dispensing tube. The ring seal consists of an elastic sealing material, preferably rubber or the like. Inside the discharge tube is a discharge channel formed, which has a lateral opening, in particular bore, which is closed on the outside in the closed position by the ring seal. If the dispensing tube is pressed into the interior of the container against the action of the elastic element, the lateral opening or bore is released from the ring seal, so that a medium under pressure in the container through the valve body, the lateral bore and the discharge channel of the dispensing tube through to the outside can escape.
Figur 3 zeigt ein Ventil gemäß dem Stand der Technik im Längsschnitt. Das Ventil ist an einem Deckel 11 montiert, mit dem eine entsprechende Öffnung eines nicht dargestellten Behälters für die Aufnahme eines unter Druck stehenden Mediums verschließbar ist. Der Deckel 11 weist eine zentrale Öffnung 12 zur Aufnahme eines Abgaberöhrchens 13 auf, welches sich behäl- terinnenseitig in einen Ventilkörper 15 hinein erstreckt. Zwischen dem Inneren des Ventilkörpers 15 und dem Behälterinneren besteht eine Fluidverbindung über eine Steigleitung. Der Ventilkörper 15 ist fiuiddicht am Rand 16 der Deckelöffnung 12 fi- xiert. Zu diesem Zweck weist der Ventilkörper 15 einen sich radial nach außen erstreckenden Umfangsflansch auf, der in montiertem Zustand von einem sich radial nach innen erstreckenden Ringvorsprung am Deckel 11 derart hintergriffen ist, daß der Ventilkörper 15 klemmend vom Deckel 11 gehalten ist. Zwi- sehen dem Rand 16 der Deckelöffnung 12 und dem Umfangsflansch des Ventilkörpers 15 ist eine flache Ringdichtung 20 derart angeordnet, daß sie das Abgaberöhrchen 13 eng umschließt. Die Ringdichtung 20 besteht aus einem elastischen und korrosionsbeständigen Material. Das Abgaberöhrchen 13 ist im Ventilkörper 15 axial verschieblich gelagert, und zwar aus einer in Figur 3 dargestellten Schließstellung heraus entgegen der Wirkung einer Schraubendruckfeder.Figure 3 shows a valve according to the prior art in longitudinal section. The valve is mounted on a cover 11, with which a corresponding opening of a container, not shown, for receiving a medium under pressure can be closed. The lid 11 has a central opening 12 for receiving a dispensing tube 13 which extends into a valve body 15 on the inside of the container. There is a fluid connection between the inside of the valve body 15 and the inside of the container via a riser. The valve body 15 is fixed to the edge 16 of the lid opening 12 in a fluid-tight manner. For this purpose, the valve body 15 has a radially outwardly extending circumferential flange which, in the assembled state, is engaged behind by a radially inwardly extending annular projection on the cover 11 in such a way that the valve body 15 is held in a clamped manner by the cover 11. Between the edge 16 of the lid opening 12 and the peripheral flange of the valve body 15, a flat ring seal 20 is arranged in such a way that it closely surrounds the dispensing tube 13. The ring seal 20 consists of an elastic and corrosion-resistant material. The dispensing tube 13 is axially displaceably mounted in the valve body 15, specifically from a closed position shown in FIG. 3 against the action of a helical compression spring.
Im Inneren des Abgaberöhrchens 13 erstreckt sich in Richtung parallel zur Längsmittenachse ein nach außen offener und innenseitig geschlossener Austragskanal 25. Ein sich quer dazu erstreckender Durchgang 24 verbindet den Austragskanal 25 mit der Außenseite des Abgaberöhrchens auf einer Höhe, die in der Schließstellung auf Höhe der Ringdichtung 20 liegt. Die Ringdichtung 20 schließt somit die äußere Öffnung des Durchgangs 24 in der Schließstellung. Durch eine axiale Verschiebung des Ab- gaberöhrchens 13 in das Behälterinnere hinein wird die äußere Öffnung des Durchgangs 24 von der Ringdichtung 20 freigegeben. Somit wird eine Fluidverbindung zwischen dem Inneren des Ventilkörpers 15 und dem Austragskanal 25 hergestellt.In the interior of the discharge tube 13, an outwardly open and internally closed discharge channel 25 extends in the direction parallel to the longitudinal center axis. A passage 24 extending transversely thereto connects the discharge channel 25 to the outside of the dispensing tube at a height which is in the closed position at the level of the ring seal 20. The ring seal 20 thus closes the outer opening of the passage 24 in the closed position. An axial displacement of the dispensing tube 13 into the interior of the container clears the outer opening of the passage 24 from the ring seal 20. A fluid connection is thus established between the interior of the valve body 15 and the discharge channel 25.
Das in Figur 3 dargestellte Ventil des Standes der Technik hat jedoch den Nachteil, daß beim Eindrücken des Abgaberöhrchens 13 die elastische Ringdichtung 20 mit diesem mit nach innen geschleppt werden kann. Dies hat zur Folge, daß die Öffnung des Durchgangs 24 von der Ringdichtung 20 später als erwartet frei- gegeben wird. Das Abgaberöhrchen 13 muß somit verhältnismäßig tief nach unten bzw. in das Behälterinnere gedrückt werden, um die Verbindung vom Behälterinneren zum Austragskanal 25 über den Durchgang 24 herzustellen. Durch das Mitschleppen der Dichtung und durch die außen scharfkantig ausgebildete Durchgangs- Öffnung kann es zu einer Beschädigung des Dichtungsmaterials und auch zur einer Abtrennung von Teilen der Dichtung kommen, wodurch die Funktion des Ventils beeinträchtigt und seine Betriebsdauer verkürzt wird.The valve of the prior art shown in FIG. 3 has the disadvantage, however, that when the delivery tube 13 is pressed in, the elastic ring seal 20 can be dragged inward with it. The result of this is that the opening of the passage 24 is released by the ring seal 20 later than expected. The dispensing tube 13 must therefore be pressed relatively deep down or into the interior of the container in order to establish the connection from the interior of the container to the discharge channel 25 via the passage 24. The dragging of the seal and the through-opening formed with sharp edges on the outside can damage the sealing material and also separate parts of the seal, as a result of which the function of the valve is impaired and its operating time is shortened.
Mit dem Gegenstand der Deutschen Patentanmeldung P 198 26 308.2 (Anmeldetag: 12. Juni 1998) der gleichen Anmelderin sollen die vorstehend angegebenen Nachteile des Standes der Technik dadurch gelöst werden, daß der in den Austragskanal mündende Durchgang durch eine von außen nach innen zum Behälterinneren gerichtete Schrägbohrung gebildet ist, deren äußere Öffnung zumindest teilweise unterhalb der durch den oberen Umfangsrand des der Dichtung zugewandten Ringvorsprungs definierten Ebene liegt. Dadurch ist das äußere Ende des Durchgangs zumindest nicht vollständig durch die Ringdichtung verschlossen. Die Fluidverbindung zwischen Austragskanal und Behälter wird hergestellt, sobald der Ringflansch vom Dichtring nur geringfügig abhebt. Dies geschieht schlagartig bei nur geringem Eindrücken des Abgaberöhrchens.The subject of German patent application P 198 26 308.2 (filing date: June 12, 1998) by the same applicant is intended to solve the above-mentioned disadvantages of the prior art in that the passage opening into the discharge channel is directed from the outside inwards to the inside of the container An oblique bore is formed, the outer opening of which lies at least partially below the plane defined by the upper peripheral edge of the ring projection facing the seal. As a result, the outer end of the passage is at least not completely closed by the ring seal. The fluid connection between the discharge channel and the container is established as soon as the ring flange of the sealing ring is only slightly takes off. This happens abruptly when the dispensing tube is only slightly pressed in.
Aber auch dann wenn das äußere Ende des Durchganges zwar nicht vollständig, aber zumindest teilweise durch die Ringdichtung verschlossen wird, lassen sich die vorstehend genannten Probleme (Mitschleppen und Beschädigung des Dichtungsmaterials) nicht vollständig ausschließen.However, even if the outer end of the passage is not completely but at least partially closed by the ring seal, the above-mentioned problems (entrainment and damage to the sealing material) cannot be completely ruled out.
Eine zweckmäßige Ausführungsform der P 198 26 308.2 sieht zwar vor, daß die äußere Öffnung der Schrägbohrung unterhalb der durch den oberen Umfangsrand des der Ringdichtung zugewandten Ringvorsprungs definierten Ebene liegt. Diese Ausführungsform erfordert aber eine präzise Verarbeitung und Einpassung des Ventils in den Deckel des Aerosolbehälters; außerdem muß dann auch, weil die äußere Öffnung des Durchgangs stets geöffnet ist, der Ringvorsprung genau mit der Ringdichtung abschließen, und eine geringfügige und unbeabsichtigte Achsialversetzung des Abgaberöhrchens kann bereits zu einer nicht gewollten Abgabe führen.An expedient embodiment of P 198 26 308.2 does provide that the outer opening of the oblique bore lies below the plane defined by the upper peripheral edge of the ring projection facing the ring seal. However, this embodiment requires precise processing and fitting of the valve into the lid of the aerosol container; in addition, because the outer opening of the passage is always open, the ring projection must be exactly sealed with the ring seal, and a slight and unintentional axial displacement of the delivery tube can already lead to an unwanted delivery.
Aufgabe der vorliegenden Erfindung ist es, ein Ventil zur Abgabe von unter Druck stehenden Flüssigkeiten bereitzustellen, mit dem die vorstehend angesprochenen Probleme weitgehend ver- mieden werden können, und mit dem auf sichere Weise gut reproduzierbare Dosierungen möglich sind.The object of the present invention is to provide a valve for dispensing pressurized liquids with which the problems mentioned above can be largely avoided and with which doses which are easily reproducible are possible in a safe manner.
Diese Aufgabenstellung wird mit der vorliegenden Erfindung gelöst.This task is solved with the present invention.
Gegenstand der Erfindung ist ein Ventil gemäß Patentanspruch 1 zur Abgabe von unter Druck stehenden Flüssigkeiten, Schäumen, Gelen oder dgl., mit einem fiuiddicht am Rand einer in einem Deckel für eine Behälteröffnung ausgebildeten Deckelöffnung be- festigbaren Ventilkörper, einem im Ventilkörper achsial verschieblich gelagerten, aus einer Schließstellung heraus entgegen der Wirkung eines elastischen Elements, insbesondere einer Schraubendruckfeder bewegbaren Abgaberöhrchen, und einer zwischen dem Rand der Deckelöffnung und dem Ventilkörper das Abgaberöhrchen eng umschließend angeordneten Ringdichtung aus Gummi oder dgl. elastischem Dichtmaterial, derart, daß diese in Schließstellung des Abgaberöhrchens bzw. Ventils einen im Abgaberöhrchen ausgebildeten Austragskanal fiuiddicht schließt, wobei das Abgaberöhrchen einen Ringflansch mit einem der Ringdichtung zugewandten Ringvorsprung zur Herstellung einer Fluiddichtung zwischen Ringdichtung und Austragskanal des Abga- beröhrchens umfaßt, wobei die Fluidverbindung zum Austragskanal des Abgaberöhrchens durch einen im Abgaberöhrchen ausgebildeten und am behälterinneren Ende des Austragskanals in diesen mündenden Durchgang gebildet ist. Der äußere Rand des Durchgangs ist stumpf, insbesondere abgerundet, ausgebildet.The invention relates to a valve according to claim 1 for dispensing pressurized liquids, foams, gels or the like, with a fluid-tight valve body which can be fastened on the edge of a lid opening formed in a lid for a container opening, and a valve body which is axially displaceably mounted in the valve body. from a closed position against the action of an elastic element, in particular one Helical compression spring movable delivery tube, and between the edge of the lid opening and the valve body tightly surrounding the delivery tube arranged ring seal made of rubber or the like comprises an annular flange with an annular projection facing the annular seal for producing a fluid seal between the annular seal and the discharge channel of the dispensing tube, the fluid connection to the discharge channel of the dispensing tube being formed by a passage formed in the dispensing tube and opening into this at the end of the discharge channel inside the container. The outer edge of the passage is blunt, in particular rounded.
Zweckmäßige Ausführungsformen sind Gegenstand der Unteransprü- che 2 bis 4.Expedient embodiments are the subject of subclaims 2 to 4.
Nachstehend werden Ausführungsformen von Ventilen des Standes der Technik und von erfindungsgemäßen Ventilen anhand der beigefügten Zeichnungen näher beschrieben. Es zeigen:Embodiments of valves of the prior art and of valves according to the invention are described in more detail below with reference to the accompanying drawings. Show it:
Figur 1 eine vergrößerte Darstellung des eingekreisten Bereiches der Figur 3 mit einem erfindungsgemäß ausgestalteten Durchgang bei geschlossenem Ventil (Figur la) und bei sich öffnendem Ventil (Figur lb) .Figure 1 is an enlarged view of the encircled area of Figure 3 with a passage designed according to the invention with the valve closed (Figure la) and with the valve opening (Figure lb).
Figur 2 eine vergrößerte Darstellung des eingekreisten Bereichs der Figur 3 mit einem Durchgang gemäß dem Stand der Technik bei geschlossenem Ventil (Figur 2a) , und bei sich öffnendem Ventil (Figur 2b) ; und dieFigure 2 is an enlarged view of the encircled area of Figure 3 with a passage according to the prior art with the valve closed (Figure 2a), and with the valve opening (Figure 2b); and the
Figur 3 ein Ventil gemäß Stand der Technik und nach dem Oberbegriff des Anspruchs 1 im Längsschnitt;Figure 3 shows a valve according to the prior art and according to the preamble of claim 1 in longitudinal section;
In den Figuren 1 und 2 besitzen die mit Figur 3 gleichen Be- zugszeichen die gleiche Bedeutung wie in Figur 3. Die Figur 2 läßt erkennen, daß durch einen nicht abgestumpften, im wesentlichen scharfkantigen Öffnungsrand 29 des Durchgangs 24 beim Öffnungsvorgang des Ventils eine ausgeprägte Tendenz zum Mitschleppen und Quetschen der Dichtung 20 besteht.In FIGS. 1 and 2, the same reference numerals as in FIG. 3 have the same meaning as in FIG. 3. FIG. 2 shows that there is a pronounced tendency for the seal 20 to be carried along and squeezed by a non-blunted, essentially sharp-edged opening edge 29 of the passage 24 during the opening process of the valve.
In Figur 1 ist aufgrund der abgestumpften (abgerundeten) Form des Öffnungsrandes 29 ein Mitschleppen und Quetschen der Dichtung 20 kaum erkennbar. Dadurch wird eine gute Funktionsweise des Ventils gewährleistet und eine Zerstörung des Dichtungsma- terials kann vermieden werden.In Figure 1 due to the blunted (rounded) shape of the opening edge 29 entrainment and squeezing of the seal 20 is hardly noticeable. This ensures that the valve works properly and prevents the sealing material from being destroyed.
Der Querschnitt des abgestumpften Randes der äußeren Öffnung des Durchgangs 24 kann irgendeine Form aufweisen, die einen scharfkantigen Rand vermeidet. Sie kann z.B. abgerundet (vorzugsweise wulstartig, wie in Figur 1 dargestellt) , abgeschrägt oder trompetenförmig sein.The cross-section of the truncated edge of the outer opening of the passage 24 can have any shape that avoids a sharp-edged edge. It can e.g. rounded (preferably bead-like, as shown in Figure 1), beveled or trumpet-shaped.
Der erfindungsgemäß ausgestaltete Durchgang 24 kann z.B. nach der Herstellung des Abgaberöhrchens 13, das in der Regel aus einem geeigneten Kunststoff besteht, auf einfache Weise ausgebildet werden, z.B. mittels einer erhitzten Nadel, eines Bohrers, oder ähnlicher geeigneter Werkzeuge.The passage 24 designed according to the invention can e.g. after the production of the delivery tube 13, which usually consists of a suitable plastic, can be formed in a simple manner, e.g. by means of a heated needle, a drill, or similar suitable tools.
Die Durchgänge weisen in der Regel einen Durchmesser von 0,25 bis 1,0 mm, vorzugsweise 0,27 bis 0,5 mm, und eine Länge von 1,0 bis 4 , 0 mm auf.The passages generally have a diameter of 0.25 to 1.0 mm, preferably 0.27 to 0.5 mm, and a length of 1.0 to 4.0 mm.
Der Radius eines an die Krümmung der Abstumpfung des äußeren Randes angepaßten Kreises, z.B. der Radius einer wulstartigen Abrundung, liegt zweckmäßigerweise im Bereich von 1/3 bis 1/2 des Durchmessers des Durchgangs 24.The radius of a circle adapted to the curvature of the truncation of the outer edge, e.g. the radius of a bead-like rounding is expediently in the range from 1/3 to 1/2 of the diameter of the passage 24.
Aufgrund der mit der erfindungsgemäßen Ausgestaltung des äußeren Randes erzielbaren guten Funktionsweise kann der Durchgang als Querbohrung (parallel zur Querschnittsebene der Ringdichtung) oder als Schrägbohrung (die sich von außen nach innen und von oben nach unten erstreckt) ausgebildet sein, und die äußere Öffnung kann sich im Bereich der Ringdichtung oder auch teilweise unterhalb der durch den oberen Umfangsrand des der Ringdichtung zugewandten Ringvorsprungs definierten Ebene befinden.Due to the good functioning that can be achieved with the configuration of the outer edge according to the invention, the passage can be designed as a transverse bore (parallel to the cross-sectional plane of the ring seal) or as an oblique bore (which extends from the outside inwards and from top to bottom), and the outer Opening can be located in the area of the ring seal or also partially below the plane defined by the upper peripheral edge of the ring projection facing the ring seal.
Sämtliche in den Anmeldungsunterlagen offenbarten Merkmale werden als erfindungswesentlich beansprucht, soweit sie einzeln oder in Kombination gegenüber dem Stand der Technik neu sind. All features disclosed in the application documents are claimed as essential to the invention, insofar as they are new compared to the prior art, individually or in combination.
BezugszeichenlisteReference list
Deckel zentrale Öffnung Abgaberöhrchen Ventilkörper Rand Ringdichtung Durchgang Austragskanal Ringflansch Ringvorsprung Rand der Durchgangsöffnung Lid, central opening, dispensing tube, valve body, edge, ring seal, passage, discharge channel, ring flange, ring projection, edge of the passage opening

Claims

Patentansprüche claims
1. Ventil für die Abgabe von unter Druck stehenden Flüssigkeiten, Schäumen, Gelen oder dgl., mit einem fiuiddicht am Rand einer in einem Deckel (11) für eine Behälteröffnung ausgebildeten Deckelöffnung (12) befestigbaren Ventilkörper (15) , einem im Ventilkörper (15) achsial verschieblich ge- lagerten, aus einer Schließstellung heraus entgegen der Wirkung eines elastischen Elements, insbesondere einer Schraubendruckfeder (21) bewegbaren Abgaberöhrchen (13) , und einer zwischen dem Rand (16) der Deckelöffnung und dem Ventilkörper (15) das Abgaberöhrchen (13) eng umschließend angeordneten Ringdichtung (20) aus Gummi oder dgl. elastischem Dichtmaterial, derart, daß diese in Schließstellung des Abgaberöhrchens (13) bzw. Ventils einen im Abgaberöhrchen ausgebildeten Austragskanal (25) fiuiddicht schließt, wobei das Abgaberöhrchen (13) einen Ringflansch (27) mit einem der Ringdichtung (20) zugewandten Ringvorsprung (28) zur Herstellung einer Fluiddichtung zwischen Ringdichtung (20) und Austragskanal (25) des Abgaberöhrchens (13) umfaßt, wobei die Fluidverbindung zum Austragskanal (25) des Abgaberöhrchens (13) durch einen im Ab- gaberohrchen (13) ausgebildeten und am behälterinneren Ende des Austragskanals (25) in diesen mündenden Durchgang (24) gebildet ist, d a d u r c h g e k e n n z e i c h n e t, daß der äußere Rand (29) des Durchgangs (24) stumpf, insbeson- dere abgerundet, ausgebildet ist.1.Valve for the delivery of pressurized liquids, foams, gels or the like, with a fluid-tight valve body (15) which can be fastened to the edge of a lid opening (12) formed in a lid (11) for a container opening, and a valve body (15 ) axially displaceable, from a closed position against the action of an elastic element, in particular a helical compression spring (21) movable delivery tube (13), and one between the edge (16) of the lid opening and the valve body (15) the delivery tube (13 ) closely surrounding ring seal (20) made of rubber or similar elastic sealing material, such that when the delivery tube (13) or valve is in the closed position it closes a discharge channel (25) formed in the delivery tube in a fluid-tight manner, the delivery tube (13) closing an annular flange ( 27) with a ring projection (28) facing the ring seal (20) for producing a fluid seal between ring di device (20) and discharge channel (25) of the discharge tube (13), the fluid connection to the discharge channel (25) of the discharge tube (13) being formed in the discharge tube (13) and at the inside of the discharge channel (25) in the container opening (24) is formed, characterized in that the outer edge (29) of the passage (24) is blunt, in particular rounded.
2. Ventil nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß der Durchgang (24) als Querbohrung oder Schrägbohrung aus- gebildet ist. Ventil nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der äußere Rand (29) des Durchgangs (24) wulstartig ausgebildet ist.2. Valve according to claim 1, characterized in that the passage (24) is designed as a transverse bore or oblique bore. Valve according to claim 1 or 2, characterized in that the outer edge (29) of the passage (24) is bead-like.
Ventil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Radius der Abrundung 1/3 bis 1/2 des Durchmessers der Öffnung (29) des Durchgangs (24) beträgt. Valve according to one of claims 1 to 3, characterized in that the radius of the rounding is 1/3 to 1/2 of the diameter of the opening (29) of the passage (24).
EP99971390A 1998-10-30 1999-10-28 Valve for releasing pressurised liquids Expired - Lifetime EP1124738B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19850146A DE19850146A1 (en) 1998-10-30 1998-10-30 Valve for dispensing pressurized liquids
DE19850146 1998-10-30
PCT/EP1999/008197 WO2000026116A1 (en) 1998-10-30 1999-10-28 Valve for releasing pressurised liquids

Publications (2)

Publication Number Publication Date
EP1124738A1 true EP1124738A1 (en) 2001-08-22
EP1124738B1 EP1124738B1 (en) 2003-06-18

Family

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Application Number Title Priority Date Filing Date
EP99971390A Expired - Lifetime EP1124738B1 (en) 1998-10-30 1999-10-28 Valve for releasing pressurised liquids

Country Status (6)

Country Link
US (1) US6375049B1 (en)
EP (1) EP1124738B1 (en)
AU (1) AU1156700A (en)
DE (2) DE19850146A1 (en)
ES (1) ES2203251T3 (en)
WO (1) WO2000026116A1 (en)

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Also Published As

Publication number Publication date
DE19850146A1 (en) 2000-05-11
WO2000026116A1 (en) 2000-05-11
EP1124738B1 (en) 2003-06-18
ES2203251T3 (en) 2004-04-01
DE59906037D1 (en) 2003-07-24
AU1156700A (en) 2000-05-22
US6375049B1 (en) 2002-04-23

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