EP1990309B1 - Container with CO2 compressed gas source and overpressure burst protection - Google Patents

Container with CO2 compressed gas source and overpressure burst protection Download PDF

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Publication number
EP1990309B1
EP1990309B1 EP07009281A EP07009281A EP1990309B1 EP 1990309 B1 EP1990309 B1 EP 1990309B1 EP 07009281 A EP07009281 A EP 07009281A EP 07009281 A EP07009281 A EP 07009281A EP 1990309 B1 EP1990309 B1 EP 1990309B1
Authority
EP
European Patent Office
Prior art keywords
container
pressure
membrane
cartridge
overpressure protection
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.)
Not-in-force
Application number
EP07009281A
Other languages
German (de)
French (fr)
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EP1990309A1 (en
Inventor
Kurt Oberhofer
Timm Oberhofer
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.)
Huber Packaging Group GmbH
Original Assignee
Individual
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
Priority to EP07009281A priority Critical patent/EP1990309B1/en
Application filed by Individual filed Critical Individual
Priority to CA002679984A priority patent/CA2679984A1/en
Priority to CN200880015437.5A priority patent/CN101687624B/en
Priority to BRPI0810793-9A2A priority patent/BRPI0810793A2/en
Priority to PCT/EP2008/003611 priority patent/WO2008138513A1/en
Priority to EA200971039A priority patent/EA200971039A1/en
Priority to AU2008250673A priority patent/AU2008250673A1/en
Priority to US12/597,140 priority patent/US20100140265A1/en
Priority to JP2010506843A priority patent/JP2010526263A/en
Publication of EP1990309A1 publication Critical patent/EP1990309A1/en
Application granted granted Critical
Publication of EP1990309B1 publication Critical patent/EP1990309B1/en
Not-in-force legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/04—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers
    • B67D1/0412—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers the whole dispensing unit being fixed to the container
    • B67D1/0418—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers the whole dispensing unit being fixed to the container comprising a CO2 cartridge for dispensing and carbonating the beverage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
    • B67D1/125—Safety means, e.g. over-pressure valves

Definitions

  • the invention relates to a container according to the preamble of claim 1, which can be filled with liquid and sealed pressure-tight and removed from the liquid.
  • containers are barrels, small barrels (party kegs) or cans in which CO 2 -containing liquids, in particular drinks, are filled under pressure. It's all about party kegs for beer.
  • the container after EP 1 642 861 A1 has an insert that can be sealed under seal in an opening of the container and a CO 2 -Hochdruckpatrone, a pressure control valve for outputting CO 2 thereof and an externally accessible actuator, by its operation, the CO 2 -Hochdruckpatrone can puncture.
  • the present invention deals with the per se unlikely accident that the pressure control valve after the EP 1 642 861 A1 for whatever reason failed. Then it can come creeping, but also very quickly to an uncontrolled increase in pressure in the container.
  • a conventional party keg for beer can withstand an internal pressure of up to approx. 6.5 bar. From about 4 bar cambered the party keg; Topsoil and / or underbody of the party barrel bulge up. At about 6.5 bar burst the party keg, and usually by the fact that a folded seam between the coat and the topsoil or the bottom of the party keg rises. The remaining CO 2 escapes.
  • the party keg runs out, maybe with a hefty fountain of beer. People are not endangered, but property damage is possible, and there are annoying cleanup.
  • a generic container with a built-in pressure system which comprises a CO 2 high-pressure cartridge, a pressure control valve for outputting CO 2 thereof and an externally accessible actuator, by the actuation of the CO 2 high-pressure cartridge is pierced.
  • the printing system has an overpressure protection, the upon an undesirable increase in pressure in the container releases a flow path from its headspace through the pressure system to the atmosphere. This overpressure protection bursts after exceeding an internal pressure at which the container visibly cambers, but before reaching an internal pressure at which the container bursts.
  • the overpressure protection after the EP 1 688 813 A1 consists of a pressure relief valve, which has a valve member in the form of a positive pressure hose piece and locks or releases a complicated flow path through a plurality of openings, holes and channels.
  • the structural complexity and the cost price of such overpressure protection are high.
  • the object of the invention is to provide a container of the type mentioned with an overpressure protection, which is inexpensive and reliable in construction and signals the customer in case of failure that something is not in order with the owner's printing system.
  • the container that solves this problem has an overpressure safety device, the bursting part of the overpressure safety device being a membrane on the wall of a housing with which the insert projects into the container.
  • the flow path for blowing off the CO 2 via a leak of the actuator is a preferred embodiment.
  • the overpressure protection is ineffective before the piercing of the CO 2 high-pressure cartridge.
  • the overpressure protection is activated by the piercing of the CO 2 high-pressure cartridge. This ensures that the overpressure protection only comes into function when it is actually needed, namely in the event of a failure of the pressure regulating valve.
  • the overpressure protection bursts at an internal pressure of between 0.4 MPa (4.0 bar) and 0.9 MPa (9.0 bar), preferably 0.45 MPa (4.5 bar) to 0.7 MPa ( 7.0 bar), more preferably 0.5 to 0.6 MPa (5.0 to 6.0 bar).
  • the membrane is supported on the actuator prior to piercing the CO 2 high pressure cartridge.
  • the membrane is released from the actuator.
  • the membrane is recessed in the insert. It is thus protected from damage.
  • the membrane is made of elastic plastic. With an uncontrolled increase in internal pressure, the membrane undergoes increasing elastic deformation until it bursts.
  • the CO 2 compressed gas source is designed as an insert which fits through the bunghole of a container into the container and closes the bunghole tight.
  • the container is filled under pressure with CO 2 -containing liquid through the bunghole usually located in the middle of its topsoil. Then the bunghole is closed with the insert.
  • the liquid passes through internal pressure and gravity effect, until in the headspace of the container above the liquid level in a negative pressure is reached.
  • the CO 2 compressed gas source is activated.
  • the CO 2 compressed gas source feeds CO 2 at a pressure into the head space of the container, which corresponds to the partial pressure of the dissolved CO 2 in the liquid or slightly exceeds this partial pressure. Thereby ensures a constant emptying of the container. There is no air in the headspace of the container.
  • the CO 2 content of the liquid remains the same.
  • the insert is of elongated-slender shape and mostly radially symmetric to a central axis. It consists mainly of plastic.
  • the two-component plastic injection molding technique offers.
  • the insert which is in the installed position and closes the bunghole of the container protrudes with a housing 10 into the container.
  • the housing 10 has at its inner end a chamber 12 for the snug-fit recording of a CO 2 high-pressure cartridge 14.
  • the housing 10 is seated outside with a circumferential collar 16 on the beaded edge of the bunghole.
  • a seal 18 is formed, with which the insert seals the bunghole.
  • the knob 20 has a steep external thread 22, with which it is screwed into a complementary internal thread of the housing 10.
  • a piercing needle 24 For piercing the CO 2 cartridge 14 is a piercing needle 24, which is structurally associated with the valve member of a pressure control valve.
  • the valve member is suspended with an elastic membrane 26 in the axial center of the housing 10.
  • the tip of the piercing needle 24 is only slightly spaced from the end face of the CO 2 cartridge 14.
  • valve seat 28 is formed from the elastic sealing material to the housing 10.
  • the piercing needle 24 is acted upon by a slider 30 which is between the knob. 20 and the piercing needle 24 is located.
  • the slider 30 is guided longitudinally displaceably in the housing 10. When actuated, the knob 20 screws against the slide 30, which is axially displaced.
  • a helical compression spring 32 is clamped between the knob 20 and slider 30, a helical compression spring 32 is clamped.
  • the helical compression spring 32 biases the slider 30 against the piercing needle 24.
  • the membrane 26 defines a working space downstream of the valve seat 28 of the pressure regulating valve.
  • the working space has a lateral outlet opening, in front of which an elastic sealing ring 34 is located.
  • the sealing ring 34 has the function of a check valve. It prevents liquid from entering the insert.
  • the knob 20 is rotated by approximately 90 °.
  • the slider 30 is adjusted by the screw feed of the knob 20 axially inwards.
  • the piercing needle 24 is carried along with elastic deformation of the membrane 26 axially inwards.
  • the valve member lifts off from the valve seat 28. After piercing, a very small valve chamber standing CO 2 filled in front of the head of the CO 2 cartridge 14 under high pressure.
  • the slider 30 After completed 90 ° rotation or over-rotation of the knob 20, the slider 30 jumps against the force of the helical compression spring 32 axially outward. He is to be actuated by the Anlegeadel 24, which is reset by the elastic recovery of the diaphragm 26 axially. The helical compression spring 32 is tensioned. The pressure control valve is closed and a small amount of high pressure CO 2 admitted into the working space. The CO 2 pressure forces on the membrane 26 contribute to the needle-actuated return jump of the slider 30 at.
  • the further opening and closing of the pressure regulating valve is determined by an equilibrium of forces on the diaphragm 26, to which the elastic properties of the diaphragm 26, the spring constant of the helical compression spring 32 and the CO 2 pressure in the working space contribute.
  • the spring constant of the helical compression spring 32 is determining.
  • the user will activate the CO 2 source of pressurized gas when the internal pressure in the container has dropped to the point where the jet of fluid exiting through the outlet cock becomes too weak.
  • CO 2 -pressure gas source can be readily activated even before, if the internal pressure in the container is still high, very likely even at the first user intervention on the container at all.
  • a metering of CO 2 in the headspace of the container does not take place as long as the high internal pressure on the sealing ring 34 in front of the outlet port loads.
  • the CO 2 compressed gas source is provided with an overpressure protection, which is effective when the pressure regulating valve fails and CO 2 passes under uncontrolled high pressure in the headspace of the container.
  • thermoplastic elastomer As an overpressure protection, thermoplastic elastomer (TPE) is injection-molded on the wall of the housing 10 close to the bunghole, the lot of least material thickness of which forms a membrane 36 buried in the wall.
  • the membrane 36 communicates with the outer surface of the piercing of the CO 2 cartridge 14 not yet actuated knob 20 in flush contact. It is placed between two adjacent threads of the external thread 22 on the knob 20.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Description

Die Erfindung betrifft einen Behälter gemäss dem Oberbegriff des Anspruchs 1, der mit Flüssigkeit befüllt und druckdicht verschlossen und aus dem Flüssigkeit entnommen werden kann. Beispiele für solche Behälter sind Fässer, Kleinfässer (Partyfässer) oder Dosen, in denen CO2-haltige Flüssigkeiten, insbesondere Getränke, unter Druck abgefüllt sind. Speziell geht es um Partyfässer für Bier.The invention relates to a container according to the preamble of claim 1, which can be filled with liquid and sealed pressure-tight and removed from the liquid. Examples of such containers are barrels, small barrels (party kegs) or cans in which CO 2 -containing liquids, in particular drinks, are filled under pressure. It's all about party kegs for beer.

Der Behälter nach EP 1 642 861 A1 hat einen Einsatz, der sich unter Abdichtung in einer Öffnung des Behälters festlegen läßt und eine CO2-Hochdruckpatrone, ein Druckregelventil zum Ausgeben von CO2 daraus und ein von außen zugängliches Stellglied aufweist, durch dessen Betätigung sich die CO2-Hochdruckpatrone anstechen läßt.The container after EP 1 642 861 A1 has an insert that can be sealed under seal in an opening of the container and a CO 2 -Hochdruckpatrone, a pressure control valve for outputting CO 2 thereof and an externally accessible actuator, by its operation, the CO 2 -Hochdruckpatrone can puncture.

Handelsübliche anstechbare CO2-Patronen in einer für einschlägige Behälter geeigneten Größe enthalten ca. 16 g CO2 unter einen Druck von ca. 60 Bar. Das Druckregelventil der EP 1 642 861 A1 sorgt für eine Minderung und präzise Regelung des Drucks, unter dem das in den Kopfraum des Behälters ausgegebene CO2 steht. Der Druck liegt typischerweise zwischen 0,7 und 1,3 Bar. Er ist gleich oder geringfügig höher als der Partialdruck des in der Flüssigkeit gelösten CO2.Commercially available coatable CO 2 cartridges in a size suitable for pertinent containers contain about 16 g CO 2 under a pressure of about 60 bar. The pressure control valve of EP 1 642 861 A1 ensures a reduction and precise regulation of the pressure under which the CO 2 discharged into the headspace of the container is located. The pressure is typically between 0.7 and 1.3 bar. It is equal to or slightly higher than the partial pressure of dissolved in the liquid CO 2 .

Die vorliegende Erfindung behandelt den an sich unwahrscheinlichen Störfall, daß das Druckregelventil nach der EP 1 642 861 A1 aus welchen Gründen auch immer versagt. Dann kann es schleichend, aber auch sehr schnell zu einem unkontrollierten Druckanstieg in dem Behälter kommen. Versuche zeigen, daß ein herkömmliches Partyfaß für Bier einem Innendruck bis ca. 6,5 Bar standhält. Ab ca. 4 Bar bombiert das Partyfaß; Oberboden und/oder Unterboden des Partyfasses wölben sich auf. Bei ca. 6,5 Bar platzt das Partyfaß, und zwar meist dadurch, daß eine Falznaht zwischen dem Mantel und dem Oberboden oder dem Unterboden des Partyfasses aufgeht. Das restliche CO2 entweicht. Das Partyfaß läuft aus, möglicherweise mit einer kräftigen Fontäne Bier. Personen sind dadurch nicht gefährdet, Sachbeschädigungen aber möglich, und es fallen lästige Aufräumarbeiten an.The present invention deals with the per se unlikely accident that the pressure control valve after the EP 1 642 861 A1 for whatever reason failed. Then it can come creeping, but also very quickly to an uncontrolled increase in pressure in the container. Experiments show that a conventional party keg for beer can withstand an internal pressure of up to approx. 6.5 bar. From about 4 bar cambered the party keg; Topsoil and / or underbody of the party barrel bulge up. At about 6.5 bar burst the party keg, and usually by the fact that a folded seam between the coat and the topsoil or the bottom of the party keg rises. The remaining CO 2 escapes. The party keg runs out, maybe with a hefty fountain of beer. People are not endangered, but property damage is possible, and there are annoying cleanup.

Aus der EP 1 688 813 A1 ist ein gattungsgemässer Behälter mit einem darin eingebauten Drucksystem bekannt, das eine CO2-Hochdruckpatrone, ein Druckregelventil zum Ausgeben von CO2 daraus und ein von außen zugängliches Stellglied aufweist, durch dessen Betätigung die CO2-Hochdruckpatrone angestochen wird. Das Drucksystem weist eine Überdrucksicherung auf, die bei einem unerwünschten Druckanstieg in dem Behälter einen Strömungsweg von dessen Kopfraum durch das Drucksystem zur Atmosphäre hin freigibt. Diese Überdrucksicherung birst nach Überschreitung eines Innendrucks, bei dem der Behälter sichtlich bombiert, jedoch vor Erreichen eines Innendrucks, bei dem der Behälter platzt.From the EP 1 688 813 A1 a generic container with a built-in pressure system is known which comprises a CO 2 high-pressure cartridge, a pressure control valve for outputting CO 2 thereof and an externally accessible actuator, by the actuation of the CO 2 high-pressure cartridge is pierced. The printing system has an overpressure protection, the upon an undesirable increase in pressure in the container releases a flow path from its headspace through the pressure system to the atmosphere. This overpressure protection bursts after exceeding an internal pressure at which the container visibly cambers, but before reaching an internal pressure at which the container bursts.

Die Überdrucksicherung nach der EP 1 688 813 A1 besteht aus einem Überdruckventil, das ein Ventilglied in Form eines Überdruckschlauchstücks hat und einen komplizierten Strömungsweg über mehrere Öffnungen, Bohrungen und Kanäle sperrt bzw. freigibt. Der bauliche Aufwand und die Gestehungskosten einer solchen Überdrucksicherung sind hoch.The overpressure protection after the EP 1 688 813 A1 consists of a pressure relief valve, which has a valve member in the form of a positive pressure hose piece and locks or releases a complicated flow path through a plurality of openings, holes and channels. The structural complexity and the cost price of such overpressure protection are high.

Aufgabe der Erfindung ist es, einen Behälter der genannten Art mit einer Überdrucksicherung zu versehen, die im Aufbau unaufwendig und funktionssicher ist und im Störfall dem Kunden signalisiert, daß mit dem behältereigenen Drucksystem etwas nicht in Ordnung ist.The object of the invention is to provide a container of the type mentioned with an overpressure protection, which is inexpensive and reliable in construction and signals the customer in case of failure that something is not in order with the owner's printing system.

Der diese Aufgabe lösende Behälter hat eine Überdruck-sicherung, wobei die berstende Partie der Überdrucksicherung eine Membran an der Wand eines Gehäuses ist, mit dem der Einsatz in den Behälter hineinragt.The container that solves this problem has an overpressure safety device, the bursting part of the overpressure safety device being a membrane on the wall of a housing with which the insert projects into the container.

Nach dem Bersten der Überdrucksicherung wird das restliche CO2 aus dem Kopfraum des Behälters über einen wohldefinierten Strömungsweg abgeblasen. Dabei kommt es zu keinem oder zumindest keinem nennenswerten Austritt von Flüssigkeit oder Schaum. Wenn überhaupt Beeinträchtigungen dadurch eintreten, halten sie sich in Grenzen. Der sichtlich bombierte Behälter signalisiert dem Kunden, daß mit dem behältereigenen Drucksystem etwas nicht in Ordnung ist.After bursting of the overpressure protection, the remaining CO 2 is blown out of the headspace of the container via a well-defined flow path. This results in no or at least no significant escape of liquid or foam. If impairments occur at all, they are limited. The visibly cambered container signals to the customer that something is wrong with the proprietary printing system.

Bei einer bevorzugten Ausführungsform führt der Strömungsweg für das Abblasen des CO2 über eine Undichtigkeit des Stellglieds. Man kann hier vorhandene Undichtigkeiten ausnutzen, wie sie das Stellglied an dem Einsatz nach der EP 1 642 861 A1 hat, und braucht an dessen Konstruktion nur wenig zu ändern.In a preferred embodiment, the flow path for blowing off the CO 2 via a leak of the actuator. One can take advantage of any existing leaks, as the actuator on the use of the EP 1 642 861 A1 has, and needs to change the construction of little.

Bei einer bevorzugten Ausführungsform ist die Überdrucksicherung vor dem Anstechen der CO2-Hochdruckpatrone unwirksam. Die Überdrucksicherung wird durch das Anstechen der CO2-Hochdruckpatrone aktiviert. Dadurch ist sichergestellt, daß die Überdrucksicherung nur dann in Funktion tritt, wenn sie tatsächlich gebraucht wird, nämlich bei einem Versagen des Druckregelventils.In a preferred embodiment, the overpressure protection is ineffective before the piercing of the CO 2 high-pressure cartridge. The overpressure protection is activated by the piercing of the CO 2 high-pressure cartridge. This ensures that the overpressure protection only comes into function when it is actually needed, namely in the event of a failure of the pressure regulating valve.

Bei einer bevorzugten Ausführungsform birst die Überdrucksicherung bei einem Innendruck zwischen 0,4 MPa (4,0 Bar) und 0,9 MPa (9,0 Bar), vorzugsweise 0,45 MPa (4,5 Bar) bis 0,7 MPa (7,0 Bar), weiter vorzugsweise 0,5 bis 0,6 MPa (5,0 bis 6,0 Bar).In a preferred embodiment, the overpressure protection bursts at an internal pressure of between 0.4 MPa (4.0 bar) and 0.9 MPa (9.0 bar), preferably 0.45 MPa (4.5 bar) to 0.7 MPa ( 7.0 bar), more preferably 0.5 to 0.6 MPa (5.0 to 6.0 bar).

Bei einer bevorzugten Ausführungsform stützt sich die Membran vor dem Anstechen der CO2-Hochdruckpatrone an dem Stellglied ab. Beim Anstechen der CO2-Hochdruckpatrone kommt die Membran von dem Stellglied frei.In a preferred embodiment, the membrane is supported on the actuator prior to piercing the CO 2 high pressure cartridge. When piercing the CO 2 high-pressure cartridge, the membrane is released from the actuator.

Bei einer bevorzugten Ausführungsform kommt die Membran in dem Einsatz versenkt zu liegen. Sie ist dadurch vor Beschädigungen geschützt.In a preferred embodiment, the membrane is recessed in the insert. It is thus protected from damage.

Bei einer bevorzugten Ausführungsform besteht die Membran aus elastischem Kunststoff. Bei einem unkontrollierten Anstieg des Innendrucks erfährt die Membran eine zunehmende elastische Verformung, bis sie birst.In a preferred embodiment, the membrane is made of elastic plastic. With an uncontrolled increase in internal pressure, the membrane undergoes increasing elastic deformation until it bursts.

Die Erfindung wird im folgenden anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1
eine CO2-Druckgasquelle im Längsschnitt; und
Fig. 2
die elastische Kunststoffkomponente einer Einzelheit II von Fig. 1.
The invention will be explained in more detail below with reference to an embodiment shown in the drawing. Show it:
Fig. 1
a CO 2 compressed gas source in longitudinal section; and
Fig. 2
the elastic plastic component of a detail II of Fig. 1 ,

Die CO2-Druckgasquelle ist als Einsatz ausgebildet, der durch das Spundloch eines Behälters hindurch in den Behälter paßt und das Spundloch dicht verschließt. Der Behälter wird durch das üblicherweise in der Mitte seines Oberbodens befindliche Spundloch unter Druck mit CO2-haltiger Flüssigkeit befüllt. Sodann wird das Spundloch mit dem Einsatz verschlossen.The CO 2 compressed gas source is designed as an insert which fits through the bunghole of a container into the container and closes the bunghole tight. The container is filled under pressure with CO 2 -containing liquid through the bunghole usually located in the middle of its topsoil. Then the bunghole is closed with the insert.

Zur Entnahme der Flüssigkeit kann ein integrierter Auslaufhahn dienen, der sich auf Unterbodenhöhe des Behälters an dessen Seitenwand befindet. Die Flüssigkeit läuft durch Innendruck und Schwerkraftwirkung aus, bis im Kopfraum des Behälters oberhalb des Flüssigkeitspegels darin ein Unterdruck erreicht ist. Diesen richtig einzustellen und geregelt aufrechtzuerhalten, wird die CO2-Druckgasquelle aktiviert. Die CO2-Druckgasquelle speist CO2 unter einem Druck in den Kopfraum des Behälters ein, der dem Partialdruck des in der Flüssigkeit gelösten CO2 entspricht oder diesen Partialdruck geringfügig übersteigt. Dadurch ist eine stetige Entleerung des Behälters gewährleistet. Es gelangt keine Luft in den Kopfraum des Behälters. Der CO2-Gehalt der Flüssigkeit bleibt gleich.To remove the liquid can serve an integrated drain cock, which is located at the bottom of the bottom of the container on the side wall. The liquid passes through internal pressure and gravity effect, until in the headspace of the container above the liquid level in a negative pressure is reached. To properly set and maintain this, the CO 2 compressed gas source is activated. The CO 2 compressed gas source feeds CO 2 at a pressure into the head space of the container, which corresponds to the partial pressure of the dissolved CO 2 in the liquid or slightly exceeds this partial pressure. Thereby ensures a constant emptying of the container. There is no air in the headspace of the container. The CO 2 content of the liquid remains the same.

Der Einsatz ist von länglich-schlanker Form und größtenteils radialsymmetrisch zu einer zentralen Achse aufgebaut. Er besteht überwiegend aus Kunststoff. Für die Herstellung bietet sich die Zweikomponenten-Kunststoffspritzgußtechnik an.The insert is of elongated-slender shape and mostly radially symmetric to a central axis. It consists mainly of plastic. For the production, the two-component plastic injection molding technique offers.

Der in Einbaustellung befindliche, das Spundloch des Behälters verschließende Einsatz ragt mit einem Gehäuse 10 in den Behälter hinein.The insert which is in the installed position and closes the bunghole of the container protrudes with a housing 10 into the container.

Das Gehäuse 10 hat an seinem inneren Ende eine Kammer 12 für die Paßsitz-Aufnahme einer CO2-Hochdruckpatrone 14. Der Kopf der Patrone 14, an dessen Stirnfläche sie angestochen werden kann, ist dem Spundloch zugewandt.The housing 10 has at its inner end a chamber 12 for the snug-fit recording of a CO 2 high-pressure cartridge 14. The head of the cartridge 14, on whose end face it can be pierced, faces the bunghole.

Das Gehäuse 10 sitzt außen mit einem umlaufenden Kragen 16 auf dem Bördelrand des Spundlochs auf. An den Kragen 16 ist eine Dichtung 18 angeformt, mit der der Einsatz das Spundloch abdichtet.The housing 10 is seated outside with a circumferential collar 16 on the beaded edge of the bunghole. At the collar 16, a seal 18 is formed, with which the insert seals the bunghole.

Über den Kragen 16 steht nach außen ein in das Gehäuse 10 eingelassener Drehknopf 20 vor, bei dessen Betätigung die CO2-Patrone 14 angestochen wird. Der Drehknopf 20 hat ein steiles Außengewinde 22, mit dem er in ein komplementäres Innengewinde des Gehäuses 10 eingeschraubt ist.About the collar 16 is in front of a recessed into the housing 10 knob 20, upon actuation of the CO 2 cartridge 14 is pierced. The knob 20 has a steep external thread 22, with which it is screwed into a complementary internal thread of the housing 10.

Zum Anstechen der CO2-Patrone 14 dient eine Anstechnadel 24, die mit dem Ventilglied eines Druckregelventils baulich vereinigt ist. Das Ventilglied ist mit einer elastischen Membran 26 in Achsmitte des Gehäuses 10 aufgehängt. Die Spitze der Anstechnadel 24 ist von der Stirnfläche der CO2-Patrone 14 nur wenig beabstandet.For piercing the CO 2 cartridge 14 is a piercing needle 24, which is structurally associated with the valve member of a pressure control valve. The valve member is suspended with an elastic membrane 26 in the axial center of the housing 10. The tip of the piercing needle 24 is only slightly spaced from the end face of the CO 2 cartridge 14.

Bei einer axialen Stellbewegung der Anstechnadel 24 auf die CO2-Patrone 14 hin hebt das Ventilglied von einem Ventilsitz 28 des Druckregelventils ab. Der Ventilsitz 28 ist aus dem elastischen Dichtmaterial an das Gehäuse 10 angeformt.In an axial adjusting movement of the piercing needle 24 on the CO 2 cartridge 14 toward the valve member lifts from a valve seat 28 of the pressure control valve. The valve seat 28 is formed from the elastic sealing material to the housing 10.

Die Anstechnadel 24 wird von einem Schieber 30 beaufschlagt, der zwischen dem Drehknopf. 20 und der Anstechnadel 24 liegt. Der Schieber 30 ist längsverschieblich in dem Gehäuse 10 geführt. Bei Betätigung schraubt sich der Drehknopf 20 gegen den Schieber 30 vor, der dabei axial verstellt wird.The piercing needle 24 is acted upon by a slider 30 which is between the knob. 20 and the piercing needle 24 is located. The slider 30 is guided longitudinally displaceably in the housing 10. When actuated, the knob 20 screws against the slide 30, which is axially displaced.

Zwischen Drehknopf 20 und Schieber 30 ist eine Schraubendruckfeder 32 eingespannt. Die Schraubendruckfeder 32 spannt den Schieber 30 gegen die Anstechnadel 24 vor.Between the knob 20 and slider 30, a helical compression spring 32 is clamped. The helical compression spring 32 biases the slider 30 against the piercing needle 24.

Die Membran 26 begrenzt einen Arbeitsraum stromab von dem Ventilsitz 28 des Druckregelventils. Der Arbeitsraum hat eine seitliche Auslaßöffnung, vor der ein elastischer Dichtring 34 liegt. Der Dichtring 34 hat die Funktion eines Rückschlagventils. Er verhindert, daß Flüssigkeit in den Einsatz gelangt.The membrane 26 defines a working space downstream of the valve seat 28 of the pressure regulating valve. The working space has a lateral outlet opening, in front of which an elastic sealing ring 34 is located. The sealing ring 34 has the function of a check valve. It prevents liquid from entering the insert.

Zum Anstechen der CO2-Patrone 14 wird der Drehknopf 20 um ca. 90° gedreht. Der Schieber 30 wird durch den Schraubenvorschub des Drehknopfs 20 axial nach innen verstellt. Die Anstechnadel 24 wird unter elastischer Verformung der Membran 26 axial nach innen mitgenommen. Das Ventilglied hebt von dem Ventilsitz 28 ab. Nach dem Anstechen füllt sich ein sehr kleiner Ventilraum vor dem Kopf der CO2-Patrone 14 mit unter hohem Druck stehendem CO2.For piercing the CO 2 cartridge 14, the knob 20 is rotated by approximately 90 °. The slider 30 is adjusted by the screw feed of the knob 20 axially inwards. The piercing needle 24 is carried along with elastic deformation of the membrane 26 axially inwards. The valve member lifts off from the valve seat 28. After piercing, a very small valve chamber standing CO 2 filled in front of the head of the CO 2 cartridge 14 under high pressure.

Nach vollendeter 90°-Drehung bzw. Überdrehung des Drehknopfs 20 springt der Schieber 30 gegen die Kraft der Schraubendruckfeder 32 axial nach außen zurück. Er wird dazu von der Anstechnadel 24 betätigt, die durch die elastische Rückverformung der Membran 26 axial zurückgestellt wird. Die Schraubendruckfeder 32 wird gespannt. Das Druckregelventil wird geschlossen und eine kleine Menge von unter hohem Druck stehendem CO2 in den Arbeitsraum eingelassen. Die CO2-Druckkräfte an der Membran 26 tragen zu dem anstechnadelbetätigten Rückspringen des Schiebers 30 bei.After completed 90 ° rotation or over-rotation of the knob 20, the slider 30 jumps against the force of the helical compression spring 32 axially outward. He is to be actuated by the Anlegeadel 24, which is reset by the elastic recovery of the diaphragm 26 axially. The helical compression spring 32 is tensioned. The pressure control valve is closed and a small amount of high pressure CO 2 admitted into the working space. The CO 2 pressure forces on the membrane 26 contribute to the needle-actuated return jump of the slider 30 at.

Das weitere Öffnen und Schließen des Druckregelventils wird durch ein Kräftegleichgewicht an der Membran 26 bestimmt, zu dem die elastischen Eigenschaften der Membran 26, die Federkonstante der Schraubendruckfeder 32 und der CO2-Druck in dem Arbeitsraum beitragen. Für den Druck des ausgegebenen CO2 ist die Federkonstante der Schraubendruckfeder 32 bestimmend.The further opening and closing of the pressure regulating valve is determined by an equilibrium of forces on the diaphragm 26, to which the elastic properties of the diaphragm 26, the spring constant of the helical compression spring 32 and the CO 2 pressure in the working space contribute. For the pressure of the output CO 2 , the spring constant of the helical compression spring 32 is determining.

Gemeinhin wird der Benutzer die CO2-Druckgasquelle aktivieren, wenn der Innendruck in dem Behälter soweit abgefallen ist, daß der Strahl der durch den Auslaufhahn austretenden Flüssigkeit zu schwach wird. Die CO2-Druckgasquelle kann aber ohne weiteres auch schon vorher aktiviert werden, wenn der Innendruck in dem Behälter noch hoch ist, sehr wohl sogar bei dem erstmaligen Bedienungsangriff des Benutzers an dem Behälter überhaupt. Eine Eindosierung von CO2 in den Kopfraum des Behälters findet solange nicht statt, wie der hohe Innendruck auf dem Dichtring 34 vor der Auslaßöffnung lastet.Generally, the user will activate the CO 2 source of pressurized gas when the internal pressure in the container has dropped to the point where the jet of fluid exiting through the outlet cock becomes too weak. The However, CO 2 -pressure gas source can be readily activated even before, if the internal pressure in the container is still high, very likely even at the first user intervention on the container at all. A metering of CO 2 in the headspace of the container does not take place as long as the high internal pressure on the sealing ring 34 in front of the outlet port loads.

Die CO2-Druckgasquelle ist mit einer Überdrucksicherung versehen, die wirksam wird, wenn das Druckregelventil versagt und CO2 unter unkontrolliert hohem Druck in den Kopfraum des Behälters gelangt.The CO 2 compressed gas source is provided with an overpressure protection, which is effective when the pressure regulating valve fails and CO 2 passes under uncontrolled high pressure in the headspace of the container.

Als Überdrucksicherung ist an der Wand des Gehäuses 10 dicht vor dem Spundloch thermoplastisches Elastomer (TPE) angespritzt, dessen Partie geringster Materialdicke eine in die Wand versenkte Membran 36 bildet.As an overpressure protection, thermoplastic elastomer (TPE) is injection-molded on the wall of the housing 10 close to the bunghole, the lot of least material thickness of which forms a membrane 36 buried in the wall.

Die Membran 36 steht mit dem Außenmantel des zum Anstechen der CO2-Patrone 14 noch nicht betätigten Drehknopfs 20 in bündiger Anlage. Sie ist dazu zwischen zwei benachbarten Gewindegängen des Außengewindes 22 an dem Drehknopf 20 plaziert.The membrane 36 communicates with the outer surface of the piercing of the CO 2 cartridge 14 not yet actuated knob 20 in flush contact. It is placed between two adjacent threads of the external thread 22 on the knob 20.

Die 90°-Drehung des Drehknopfs 20 zum Anstechen der CO2-Patrone 14 stellt der Membran 36 ein Fenster im Mantel des Drehknopfs 20 gegenüber. Bei unkontrolliert ansteigendem Innendruck kann sich die Membran 36 in dieses Fenster hinein elastisch ausdehnen, bis sie bei ca. 5,7 Bar an der Stelle geringster Materialdicke birst. Dadurch wird ein Strömungsweg vom Kopfraum des Behälters an den Mantel des Drehknopfs 20 eröffnet, der gegen den Kragen 16 nicht absolut dicht ist, so daß das CO2 aus dem Kopfraum des Behälters zur Atmosphäre hin abströmen kann.The 90 ° rotation of the knob 20 for piercing the CO 2 cartridge 14, the membrane 36 a window in the jacket of the knob 20 opposite. If the internal pressure rises uncontrollably, the membrane 36 can expand elastically into this window until it bursts at approximately 5.7 bar at the point of least material thickness. Thereby, a flow path from the headspace of the container to the shell of the knob 20 is opened, which is not absolutely tight against the collar 16, so that the CO 2 can flow out of the headspace of the container to the atmosphere.

Liste der BezugszeichenList of reference numbers

1010
Gehäusecasing
1212
Kammerchamber
1414
CO2-HochdruckpatroneCO 2 high-pressure cartridge
1616
Kragencollar
1818
Dichtungpoetry
2020
Drehknopfknob
2222
Außengewindeexternal thread
2424
Anstechnadelpiercing
2626
Membranmembrane
2828
Ventilsitzvalve seat
3030
Schieberpusher
3232
SchraubendruckfederHelical compression spring
3434
Dichtringseal
3636
Membranmembrane

Claims (7)

  1. Container which can be filled with liquid and be closed in a pressure-tight manner and out of which a liquid can be extracted, with an insert which, while at the same time being sealed off, can be secured in an orifice of the container and which has a CO2 high-pressure cartridge (14), a pressure-regulating valve for dispensing CO2 out of the latter and an actuator which is accessible from outside and as a result of the actuation of which the CO2 high-pressure cartridge (14) can be pierced, and with overpressure protection which, in the event of an undesirable pressure rise in the container, releases a flow path from the head space of the latter through the insert towards the atmosphere, the overpressure protection bursting after the overshooting of an internal pressure at which the container visibly bulges, but before an internal pressure at which the container splits apart is reached, characterized in that the bursting portion of the overpressure protection is a membrane (36) on the wall of a housing (10) with which the insert projects into the container.
  2. Container according to Claim 1, characterized in that the flow path leads via a leak of the actuator.
  3. Container according to Claim 1 or 2, characterized in that the overpressure protection is inactive before the piercing of the CO2 high-pressure cartridge (14) and is activatable as a result of the piercing of the CO2 high-pressure cartridge (14).
  4. Container according to one of Claims 1 to 3, characterized in that the overpressure protection bursts at an internal pressure of 0.4 to 0.9 MPa (4.0 to 9.0 bar), preferably 0.45 to 0.7 MPa (4.5 to 7.0 bar), further preferably 0.5 to 0.6 MPa (5.0 to 6.0 bar).
  5. Container according to one of Claims 1 to 4, characterized in that the membrane is supported on the actuator before the piercing of the CO2 high-pressure cartridge (14) and is freed from the actuator when the CO2 high-pressure cartridge (14) is pierced.
  6. Container according to one of Claims 1 to 5, characterized in that the membrane (36) comes to lie, countersunk, in the insert.
  7. Container according to one of Claims 1 to 6, characterized in that the membrane (36) consists of elastic plastic.
EP07009281A 2007-05-09 2007-05-09 Container with CO2 compressed gas source and overpressure burst protection Not-in-force EP1990309B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP07009281A EP1990309B1 (en) 2007-05-09 2007-05-09 Container with CO2 compressed gas source and overpressure burst protection
CN200880015437.5A CN101687624B (en) 2007-05-09 2008-05-06 Container having co2 compressed gas source and overpressure burst safeguard
BRPI0810793-9A2A BRPI0810793A2 (en) 2007-05-09 2008-05-06 COMPRESSED CO2 GAS SOURCE CONTAINER AND OVERPRESSION EXPLOSION PROTECTION.
PCT/EP2008/003611 WO2008138513A1 (en) 2007-05-09 2008-05-06 Container having co2 compressed gas source and overpressure burst safeguard
CA002679984A CA2679984A1 (en) 2007-05-09 2008-05-06 Container having co2 compressed gas source and overpressure burst safeguard
EA200971039A EA200971039A1 (en) 2007-05-09 2008-05-06 TANK WITH SOURCE OF COMPRESSED CARBON-GAS GAS AND PROTECTION AGAINST BURNING AT EXCESS PRESSURE
AU2008250673A AU2008250673A1 (en) 2007-05-09 2008-05-06 Container having CO2 compressed gas source and overpressure burst safeguard
US12/597,140 US20100140265A1 (en) 2007-05-09 2008-05-06 Container having co2 compressed gas source and overpressure burst safeguard
JP2010506843A JP2010526263A (en) 2007-05-09 2008-05-06 Container with CO2 compressed gas source and overpressure protection means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07009281A EP1990309B1 (en) 2007-05-09 2007-05-09 Container with CO2 compressed gas source and overpressure burst protection

Publications (2)

Publication Number Publication Date
EP1990309A1 EP1990309A1 (en) 2008-11-12
EP1990309B1 true EP1990309B1 (en) 2012-09-26

Family

ID=38484452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07009281A Not-in-force EP1990309B1 (en) 2007-05-09 2007-05-09 Container with CO2 compressed gas source and overpressure burst protection

Country Status (9)

Country Link
US (1) US20100140265A1 (en)
EP (1) EP1990309B1 (en)
JP (1) JP2010526263A (en)
CN (1) CN101687624B (en)
AU (1) AU2008250673A1 (en)
BR (1) BRPI0810793A2 (en)
CA (1) CA2679984A1 (en)
EA (1) EA200971039A1 (en)
WO (1) WO2008138513A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201508263D0 (en) * 2015-05-14 2015-06-24 Emmerald Polymers Ltd Pressure vessel
US9919910B2 (en) * 2016-02-23 2018-03-20 John Delano Gibson Fluid pressurization and dispensing system
IL255921A (en) * 2017-11-26 2018-01-31 Wilder Haim Adapter for a pressurized gas container
CN109515955B (en) * 2018-10-23 2020-05-05 塔罗斯科技股份有限公司 Wine dispenser
US11692671B2 (en) * 2020-05-07 2023-07-04 Numat Technologies, Inc. Apparatus and method for dispensing gas from a storage vessel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2072816A (en) * 1935-07-05 1937-03-02 Walter Kidde Sales Company Valve for aerating liquid vessels
NL1019562C2 (en) * 2001-12-13 2003-06-17 Heineken Tech Services Valve assembly for use with beverage delivery.
NL1023968C2 (en) * 2003-07-21 2005-01-24 Heineken Tech Services Pressure regulator for carbonated beverage container.
GB0411288D0 (en) * 2004-05-20 2004-06-23 Interbrew Sa Alcohol beverage apparatus having a bursting disk
EP1763486B1 (en) * 2004-06-25 2009-01-21 Impress Group B.V. Disposable tap for a pressurized liquid container
DE102004047252A1 (en) * 2004-09-29 2006-04-13 Kurt Oberhofer liquid container
EP1688813A1 (en) * 2005-02-02 2006-08-09 Impress GmbH & Co. oHG Pressure regulator with piercing device for gas cartridge mountable within the keg closure

Also Published As

Publication number Publication date
AU2008250673A1 (en) 2008-11-20
CA2679984A1 (en) 2008-11-20
WO2008138513A1 (en) 2008-11-20
BRPI0810793A2 (en) 2014-10-29
CN101687624A (en) 2010-03-31
JP2010526263A (en) 2010-07-29
EP1990309A1 (en) 2008-11-12
US20100140265A1 (en) 2010-06-10
CN101687624B (en) 2013-02-27
EA200971039A1 (en) 2010-04-30

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