EP0550503B1 - Non-returnable pressure vessel, especially as a filling container for cooling and air conditioning installations - Google Patents
Non-returnable pressure vessel, especially as a filling container for cooling and air conditioning installations Download PDFInfo
- Publication number
- EP0550503B1 EP0550503B1 EP91916406A EP91916406A EP0550503B1 EP 0550503 B1 EP0550503 B1 EP 0550503B1 EP 91916406 A EP91916406 A EP 91916406A EP 91916406 A EP91916406 A EP 91916406A EP 0550503 B1 EP0550503 B1 EP 0550503B1
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- EP
- European Patent Office
- Prior art keywords
- valve
- bore
- valve plug
- filling
- shoulder
- 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
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Classifications
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- 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
- B65D83/75—Aerosol containers not provided for in groups B65D83/16 - B65D83/74
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- 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
- B65D49/00—Arrangements or devices for preventing refilling of containers
- B65D49/02—One-way valves
- B65D49/04—Weighted valves
Definitions
- the invention relates to a disposable pressure container, in particular as a refill container for refrigeration and air conditioning systems, with a combined filling and removal valve which has a filling and removal opening and which has a valve body displaceably guided in a bore of a valve housing and pressed against a valve seat by spring force comprises, which can be lifted both for filling the pressure container and for removing the pressurized container contents against the action of the spring force from the valve seat, and which comprises a second valve body which, before the first filling of the container by an overcome and fluid-permeable lock from its valve seat is held at a distance, wherein a plunger which can be actuated from the filling and removal opening and acts on the second valve body is provided, with which the second valve body can be pressed over the resilient lock, as a result of which the second valve body follows overcome the barrier forms a check valve with its valve seat, preventing re-filling of the container.
- Disposable pressure vessels are known from a number of applications. The most common use is likely to be as a spray can for spraying any product using a propellant. Such pressure vessels are also used as a gas tank for smaller brazing or welding devices. Another important use is as a refill container for Motor vehicle air conditioners. Before the motor vehicles are delivered, there is usually a certain loss of refrigerant in the closed air conditioning circuit. This loss is compensated for by the refrigerant contained in the refill containers, which is fed into the air conditioning system via the filling and removal valve.
- a disposable pressure vessel of the type mentioned is known from US-PS 37 04 813. This pressure vessel already has the advantage that it prevents refilling. However, the valve housing is structurally relatively complex and therefore expensive to manufacture.
- valve housing is integrally formed from plastic with a first bore for receiving the first valve body and a second bore for receiving the second valve body in that the first bore on the end opposite the first valve seat has a radially inward facing , in one piece with the housing formed shoulder, on which on the one hand a coil spring pressing the first valve body against the first valve seat is supported, and on the other hand the lock for the second valve body is formed, the shoulder projecting radially inward into the circular plan of the second bore has, which are also integrally formed with the valve housing made of plastic.
- the valve housing can be easily molded as an injection, e.g. made of polyamide or the like produce. A considerable safety advantage can thus be achieved with a very low cost.
- a particularly simple design of the projections results if they are designed as radially inner ends of radial webs arranged on the shoulder and evenly distributed over the circumference. These webs lift the second valve body from the shoulder when it is filled for the first time, so that the fluid can flow into the smaller second bore and thus into the container when the container is filled through channels which are delimited by the webs.
- the projections, seen from the smaller second bore converge conically towards the larger first bore.
- the valve body which is located within the second smaller bore after the first filling, is centered by the projections when the fluid is removed from the container, so that a uniform annular gap is formed through which the fluid can flow into the larger bore.
- the second valve body is rotationally symmetrical and has a smaller diameter than the second hole.
- the helical spring is supported on the webs formed on the shoulder and has an inner diameter that is slightly larger than that of the second valve body. In this way, the helical spring is a guide for the second valve body when the second valve body is pushed through the lock into the second, smaller bore after the first filling with the aid of the tappet.
- the second valve body is a ball, which preferably consists of a harder material than the projections.
- a preferred material for the ball is glass or steel, while polyamide is preferably used for the valve housing and the projections.
- a structurally and fluidically preferred solution can also provide that the tappet is surrounded at a distance by a collar of the first valve body, and that the coil spring engages in the space between the tappet and the collar on the first valve body.
- a pressure vessel 1 is shown, which is closed by a lid 2.
- the lid 2 is connected to the upper edge of the container 1 by a crimp closure.
- an essentially cylindrical elevation 3 is provided, in the middle of which a filling and removal opening 5 is provided.
- a thread 6 is arranged for screwing on a filling or removal head, which is not shown here for the sake of clarity 3 is held.
- the valve 4 comprises a valve housing 8, which is sealed with a sealing washer 9 from the upper end of the elevation 3.
- a larger first bore 10 is provided within the seal housing 8, in which a first valve body 11 is arranged to be displaceable coaxially to the bore 10.
- the first valve body 11 has a sealing collar 12 on its side facing the filling and removal opening 5, which cooperates with the sealing disk 9 surrounding the opening 5. More specifically, the valve body 11 with its sealing collar 12 is pressed against the sealing disk 9 by a helical spring 13.
- the helical spring 13 is supported indirectly on a shoulder 14 arranged opposite the filling and removal opening 5. In the axial direction, the shoulder 14 is followed by a second bore 15 with a smaller diameter, which opens into the interior of the container and at whose end facing away from the shoulder 14 a conical valve seat 16 is formed.
- On the shoulder 14 are five radially inwardly pointing webs 17, the free ends 18 of which protrude into the cross section of the second bore 15. The free ends 18 are, seen from the smaller bore 15, tapered towards the larger bore 10.
- guide ribs 19 for the first valve body 11 are provided which run parallel to the bore axis. These guide ribs 19 converge in the area of the shoulder to the center of the bore and form a guide there for the end of the helical spring 13 resting on the webs 17.
- the first valve body 11 has a plunger 20 pointing towards the second, smaller bore 15, which is formed in one piece with the first valve body.
- the plunger 20 is surrounded at a distance by a collar 21 of the first valve body 11 facing the shoulder 14.
- the coil spring 13 is seated in the annular gap formed by the tappet 20 in the collar 21 and is supported on the bottom of the gap with respect to the first valve body 11.
- the tappet 20 ends at a distance from the webs 17.
- the distance is chosen so large that a ball 22 fits into the intermediate space, the diameter of which is slightly smaller than the diameter of the second Bore 15, but larger than the clear distance between the free ends 18 of the webs 17th
- the pressure vessel is shown before it is filled for the first time.
- the first valve body 11 is pressed by the spring 13 against the seal 9, and the second valve body, ie the ball 22, is still in the large bore 10 in front of the webs 17.
- the filler pin 23 is now inserted through the filling and removal opening 5 becomes, it seals against the sealing washer 9 and lifts the first valve body 11 against the sealing washer 9.
- Fluid filled through the filler pin can now pass between the valve body 11, the sealing washer 9, then through the between the large bore 10 and the first Valve body formed annular gap and then pass between the webs 17 into the smaller bore 15 and from there into the interior of the container.
- the filler pin 23 or possibly another mandrel is pushed further into the filling opening, so that the plunger 20 presses the ball 22 lying in front of the webs 17 into the smaller, second bore 15.
- the webs 17 are made of a softer material than the ball 22, which is preferably made of steel or glass.
- the first valve body 11 is lifted off its seat again via a mandrel.
- the pressurized container wall now strives to flow into the larger bore 10 through the smaller, second bore 15.
- the ball 22 now located in the smaller bore 15 is pressed from the rear against the free ends 18 of the webs 17. Due to the inclined design of the free ends 18 of the webs, the ball 22 is centered so that the emerging fluid can flow uniformly around the ball and enter the larger bore, in order to then be formed by the one formed between the first valve body 11 and the wall of the large bore 10 Annular gap and between the sealing disc 9 and the lifted valve body 11 to get out.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Check Valves (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen Einweg-Druckbehälter, insbesondere als Nachfüllbehälter für Kälte- und Klimaanlagen, mit einem eine Einfüll- und Entnahmeöffnung aufweisenden kombinierten Füll- und Entnahmeventil, das einen in einer Bohrung eines Ventilgehäuses verschiebbar geführten und durch Federkraft gegen einen Ventilsitz gedrückten Ventilkörper umfaßt, der sowohl zum Füllen des Druckbehälters als auch zum Entnehmen des unter Druck stehenden Behälterinhalts entgegen der Wirkung der Federkraft vom Ventilsitz abhebbar ist, und das einen zweiten Ventilkörper umfaßt, der vor dem ersten Befüllen des Behälters durch eine überwindbare und fluiddurchlässige Sperre von seinem Ventilsitz beabstandet gehalten ist, wobei ein von der Einfüll- und Entnahmeöffnung her betätigbarer und auf den zweiten Ventilkörper wirkender Stößel vorgesehen ist, mit welchem der zweite Ventilkörper über die nachgiebige Sperre drückbar ist, wodurch der zweite Ventilkörper nach Überwinden der Sperre mit seinem Ventilsitz ein Rückschlagventil bildet, das ein erneutes Befüllen des Behälters verhindert.The invention relates to a disposable pressure container, in particular as a refill container for refrigeration and air conditioning systems, with a combined filling and removal valve which has a filling and removal opening and which has a valve body displaceably guided in a bore of a valve housing and pressed against a valve seat by spring force comprises, which can be lifted both for filling the pressure container and for removing the pressurized container contents against the action of the spring force from the valve seat, and which comprises a second valve body which, before the first filling of the container by an overcome and fluid-permeable lock from its valve seat is held at a distance, wherein a plunger which can be actuated from the filling and removal opening and acts on the second valve body is provided, with which the second valve body can be pressed over the resilient lock, as a result of which the second valve body follows overcome the barrier forms a check valve with its valve seat, preventing re-filling of the container.
Einweg-Druckbehälter sind aus einer Reihe von Anwendungen bekannt. Der häufigste Einsatzzweck dürfte die Verwendung als Spraydose zum Versprühen irgendwelcher Produkte unter Einsatz eines Treibmittels sein. Ferner finden solche Druckbehälter auch Anwendung als Gastank für kleinere Hartlöt- bzw. Schweißgeräte. Ein weiterer wichtiger Einsatzzweck ist die Verwendung als Nachfüllbehälter für Kraftfahrzeug-Klimaanlagen. Bevor die Kraftfahrzeuge ausgeliefert werden, stellt sich meist bereits ein gewisser Verlust an Kältemittel in dem an sich geschlossenen Kreislauf der Klimaanlage ein. Dieser Verlust wird durch in den Nachfüllbehältern enthaltenes Kältemittel, das über das Füll- und Entnahmeventil in die Klimaanlage eingespeist wird, ausgeglichen.Disposable pressure vessels are known from a number of applications. The most common use is likely to be as a spray can for spraying any product using a propellant. Such pressure vessels are also used as a gas tank for smaller brazing or welding devices. Another important use is as a refill container for Motor vehicle air conditioners. Before the motor vehicles are delivered, there is usually a certain loss of refrigerant in the closed air conditioning circuit. This loss is compensated for by the refrigerant contained in the refill containers, which is fed into the air conditioning system via the filling and removal valve.
Nun ist es zwar durch gesetzliche Vorschriften nicht erlaubt, solche Einweg-Behälter erneut mit Kälte- bzw. Treibmittel zu befüllen. Hingegen würden die kombinierten Füll- und Entnahmeventile eine solche Wiederbefüllung zulassen. Wenn man bedenkt, daß die Druckbehälter während ihrer Verwendung gewissen Schädigungen ausgesetzt sein können, ist die Möglichkeit der Wiederbefüllung mit einem hohen potentiellen Sicherheitsrisiko verbunden.Now it is not permitted by law to refill such disposable containers with refrigerant or propellant. The combined filling and dispensing valves, on the other hand, would allow such refilling. If one considers that the pressure containers can be exposed to certain damages during their use, the possibility of refilling is associated with a high potential safety risk.
Ein Einweg-Druckbehälter der eingangs genannten Art ist aus der US-PS 37 04 813 bekannt. Dieser Druckbehälter hat bereits den Vorteil, daß er ein Wiederbefüllen verhindert. Allerdings ist das Ventilgehäuse konstruktiv relativ aufwendig und daher in der Herstellung teuer.A disposable pressure vessel of the type mentioned is known from US-PS 37 04 813. This pressure vessel already has the advantage that it prevents refilling. However, the valve housing is structurally relatively complex and therefore expensive to manufacture.
Es ist daher Aufgabe der vorliegenden Erfindung, das Ventilgehäuse bei einem Einweg-Druckbehälter der eingangs genannten Art so zu verbessern, daß es einfach und kostengünstig herzustellen ist.It is therefore an object of the present invention to improve the valve housing in a disposable pressure vessel of the type mentioned at the outset in such a way that it is simple and inexpensive to manufacture.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Ventilgehäuse einstückig aus Kunstoff mit einer ersten Bohrung zur Aufnahme des ersten Ventilkörpers und einer zweiten Bohrung zur Aufnahme des zweiten Ventilkörpers ausgebildet ist, daß die erste Bohrung auf dem dem ersten Ventilsitz gegenüberliegenden Ende einen radial nach innen weisenden, einstückig mit dem Gehäuse ausgebildeten Absatz aufweist, auf dem sich zum einen eine den ersten Ventilkörper gegen den ersten Ventilsitz drückende Schraubenfeder abstützt, und an dem zum anderen die Sperre für den zweiten Ventilkörper ausgebildet ist, wobei der Absatz radial nach innen in den kreisförmigen Grundriß der zweiten Bohrung ragende Vorsprünge aufweist, die ebenfalls einstückig mit dem Ventilgehäuse aus Kunststoff gebildet sind.This object is achieved in that the valve housing is integrally formed from plastic with a first bore for receiving the first valve body and a second bore for receiving the second valve body in that the first bore on the end opposite the first valve seat has a radially inward facing , in one piece with the housing formed shoulder, on which on the one hand a coil spring pressing the first valve body against the first valve seat is supported, and on the other hand the lock for the second valve body is formed, the shoulder projecting radially inward into the circular plan of the second bore has, which are also integrally formed with the valve housing made of plastic.
Das Ventilgehäuse läßt sich auf diese Weise einfach als Spritzgußteil, z.B. aus Polyamid od.dgl. herstellen. Somit läßt sich mit einem sehr geringen Kostenaufwand ein erheblicher Sicherheitsvorteil erreichen.The valve housing can be easily molded as an injection, e.g. made of polyamide or the like produce. A considerable safety advantage can thus be achieved with a very low cost.
Eine besonders einfache Ausbildung der Vorsprünge ergibt sich, wenn diese als radial innen liegende Enden von auf dem Absatz angeordneten und über den Umfang gleichmäßig verteilten radialen Stegen ausgebildet sind. Diese Stege heben den zweiten Ventilkörper beim ersten Befüllen von dem Absatz ab, so daß das Fluid beim Befüllen des Behälters durch Kanäle, die durch die Stege begrenzt werden, in die kleinere zweite Bohrung und somit in den Behälter strömen kann.A particularly simple design of the projections results if they are designed as radially inner ends of radial webs arranged on the shoulder and evenly distributed over the circumference. These webs lift the second valve body from the shoulder when it is filled for the first time, so that the fluid can flow into the smaller second bore and thus into the container when the container is filled through channels which are delimited by the webs.
Besonders bevorzugt ist, wenn die Vorsprünge, von der kleineren zweiten Bohrung her gesehen, zur größeren ersten Bohrung hin konisch zusammenlaufen. Somit wird der Ventilkörper, der sich nach dem ersten Befüllen innerhalb der zweiten kleineren Bohrung befindet, beim Entnehmen des Fluids aus dem Behälter durch die Vorsprünge zentriert, so daß ein gleichmäßiger Ringspalt gebildet wird, durch den das Fluid in die größere Bohrung strömen kann.It is particularly preferred if the projections, seen from the smaller second bore, converge conically towards the larger first bore. Thus, the valve body, which is located within the second smaller bore after the first filling, is centered by the projections when the fluid is removed from the container, so that a uniform annular gap is formed through which the fluid can flow into the larger bore.
Gemäß einer bevorzugten Weiterbildung ist der zweite Ventilkörper rotationssymmetrisch ausgebildet und weist einen kleineren Durchmesser auf als die zweite Bohrung.According to a preferred development, the second valve body is rotationally symmetrical and has a smaller diameter than the second hole.
Bevorzugt wird ferner, wenn sich die Schraubenfeder auf den auf dem Absatz ausgebildeten Stegen abstützt und einen Innendurchmesser aufweist, der geringfügig größer ist als der des zweiten Ventilkörpers. Auf diese Weise stellt die Schraubenfeder eine Führung des zweiten Ventilkörpers dar, wenn der zweite Ventilkörper nach dem ersten Befüllen mit Hilfe des Stößels durch die Sperre hindurch in die zweite, kleinere Bohrung gestoßen wird.It is further preferred if the helical spring is supported on the webs formed on the shoulder and has an inner diameter that is slightly larger than that of the second valve body. In this way, the helical spring is a guide for the second valve body when the second valve body is pushed through the lock into the second, smaller bore after the first filling with the aid of the tappet.
Gemäß einer bevorzugten Ausführungsform ist der zweite Ventilkörper eine Kugel, die in bevorzugter Weise aus einem härteren Material besteht als die Vorsprünge. Ein bevorzugtes Material für die Kugel ist Glas oder Stahl, während für das Ventilgehäuse und die Vorsprünge bevorzugterweise Polyamid zum Einsatz kommt.According to a preferred embodiment, the second valve body is a ball, which preferably consists of a harder material than the projections. A preferred material for the ball is glass or steel, while polyamide is preferably used for the valve housing and the projections.
Eine baulich und strömungstechnisch bevorzugte Lösung kann fernerhin vorsehen, daß der Stößel mit Abstand von einem Kragen des ersten Ventilkörpers umgeben ist, und daß die Schraubenfeder in den Zwischenraum zwischen Stößel und Kragen an dem ersten Ventilkörper angreift.A structurally and fluidically preferred solution can also provide that the tappet is surrounded at a distance by a collar of the first valve body, and that the coil spring engages in the space between the tappet and the collar on the first valve body.
Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher erläutert. Es zeigen:
- Fig. 1
- in einer schematischen Schnittdarstellung eine Einweg-Druckbehälter mit einem erfindungsgemäßen Füll- und Entnahmeventil, und
- Fig. 2
- in einer vergrößerten Darstellung das Füll- und Entnahmeventil aus Fig. 1.
- Fig. 1
- in a schematic sectional view of a disposable pressure container with a filling and removal valve according to the invention, and
- Fig. 2
- in an enlarged view, the filling and removal valve from FIG. 1.
In Fig. 1 ist ein Druckbehälter 1 dargestellt, der durch einen Deckel 2 verschlossen ist. Der Deckel 2 ist mit der Oberkante des Behälters 1 durch einen Bördelverschluß verbunden. In der Mitte des Deckels 2 ist eine im wesentlichen zylindrische Erhebung 3 vorgesehen, in deren Mitte eine Einfüll- und Entnahmeöffnung 5 vorgesehen ist. Auf der Außenseite der Erhebung 3 ist ein Gewinde 6 zum Aufschrauben eines Füll- bzw. Entnahmekopfes angeordnet, der hier der Übersichtlichkeit halber nicht dargestellt ist Die Erhebung 3 umschließt ein Füll- und Entnahmeventil 4, welches durch eine umlaufende Einprägung 7 hintergriffen und in der Erhebung 3 gehalten ist. Das Ventil 4 umfaßt ein Ventilgehäuse 8, welches mit einer Dichtungsscheibe 9 gegenüber dem oberen Ende der Erhebung 3 abgedichtet ist. Innerhalb des Dichtungsgehäuses 8 ist eine größere erste Bohrung 10 vorgesehen, in welcher ein erster Ventilkörper 11 koaxial zur Bohrung 10 verschieblich angeordnet ist. Der erste Ventilkörper 11 weist auf seiner der Einfüll- und Entnahmeöffnung 5 zugewandten Seite einen Dichtkragen 12 auf, der mit der die Öffnung 5 umgebenden Dichtungsscheibe 9 zusammenwirkt. Genauer gesagt wird der Ventilkörper 11 mit seinem Dichtkragen 12 durch eine Schraubenfeder 13 gegen die Dichtscheibe 9 gedrückt. Die Schraubenfeder 13 stützt sich mittelbar auf einem der Einfüll- und Entnahmeöffnung 5 gegenüberliegend angeordneten Absatz 14 ab. In Achsrichtung schließt sich an den Absatz 14 weiter eine im Durchmesser kleinere zweite Bohrung 15 an, die in das Behälterinnere mündet und an deren von dem Absatz 14 abgewandten Ende ein konischer Ventilsitz 16 ausgebildet ist. Auf dem Absatz 14 sind fünf radial nach innen weisende Stege 17 angeordnet, deren freie Enden 18 bis in den Querschnitt der zweiten Bohrung 15 hineinragen. Die freien Enden 18 sind, von der kleineren Bohrung 15 her gesehen, zur größeren Bohrung 10 hin konisch zulaufend ausgebildet.In Fig. 1, a pressure vessel 1 is shown, which is closed by a
Am Rand der größeren Bohrung 10 sind parallel zur Bohrungsachse verlaufende Führungsrippen 19 für den ersten Ventilkörper 11 vorgesehen. Diese Führungsrippen 19 laufen im Bereich des Absatzes zur Mitte der Bohrung zusammen und bilden dort eine Führung für das auf den Stegen 17 aufliegende Ende der Schraubenfeder 13.At the edge of the
Der erste Ventilkörper 11 weist einen zur zweiten, kleineren Bohrung 15 hin zeigenden Stößel 20 auf, der einstückig mit dem ersten Ventilkörper ausgebildet ist. Der Stößel 20 wird mit Abstand von einem zum Absatz 14 weisenden Kragen 21 des ersten Ventilkörpers 11 umgeben. Die Schraubenfeder 13 sitzt in dem durch den Stößel 20 in dem Kragen 21 gebildeten Ringspalt und stützt sich am Spaltgrund gegenüber dem ersten Ventilkörper 11 ab. In der geschlossenen in Fig. 2 dargestellten Lage des ersten Ventilkörpers 11 endet der Stößel 20 mit Abstand vor den Stegen 17. Der Abstand ist so groß gewählt, daß in den Zwischenraum eine Kugel 22 paßt, deren Durchmesser geringfügig kleiner ist als der Durchmesser der zweiten Bohrung 15, jedoch größer als der lichte Abstand der freien Enden 18 der Stege 17.The
Im folgenden wird die Wirkungs- und Funktionsweise des erfindungsgemäßen Druckbehälters näher erläutert. In den Fig. 1 und 2 ist der Druckbehälter vor seinem ersten Befüllen dargestellt. Der erste Ventilkörper 11 wird durch die Feder 13 gegen die Dichtung 9 gedrückt, und der zweite Ventilkörper, also die Kugel 22, liegt noch in der großen Bohrung 10 vor den Stegen 17. Wenn nun der Füllstift 23 durch die Einfüll- und Entnahmeöffnung 5 eingeführt wird, dichtet er gegenüber der Dichtungsscheibe 9 ab und hebt den ersten Ventilkörper 11 gegenüber der Dichtungsscheibe 9 an. Durch den Füllstift eingefülltes Fluid kann nun zwischen dem Ventilkörper 11, der Dichtungsscheibe 9, dann weiter durch den zwischen der großen Bohrung 10 und dem ersten Ventilkörper gebildeten Ringspalt und dann zwischen den Stegen 17 hindurch in die kleinere Bohrung 15 und von dort in das Behälterinnere gelangen.The operation and functioning of the pressure container according to the invention is explained in more detail below. 1 and 2, the pressure vessel is shown before it is filled for the first time. The
Wenn auf diese Weise der Behälter befüllt ist, wird der Füllstift 23 oder evtl. auch ein anderer Dorn weiter in die Einfüllöffnung hineingestoßen, so daß der Stößel 20 die vor den Stegen 17 liegende Kugel 22 in die kleinere, zweite Bohrung 15 drückt. Dies ist deswegen möglich, weil die Stege 17 aus einem weicheren Material bestehen als die Kugel 22, die vorzugsweise aus Stahl oder Glas besteht.When the container is filled in this way, the
Wenn nun der Inhalt aus dem Behälter entnommen werden soll, wird wieder über einen Dorn der erste Ventilkörper 11 von seinem Sitz abgehoben. Die unter Druck stehende Behälterwand ist nun bestrebt, durch die kleinere, zweite Bohrung 15 in die größere Bohrung 10 hineinzuströmen. Dabei wird die nunmehr in der kleineren Bohrung 15 befindliche Kugel 22 von der Rückseite her gegen die freien Enden 18 der Stege 17 gedrückt. Durch die schräge Ausbildung der freien Enden 18 der Stege wird die Kugel 22 zentriert, so daß das austretende Fluid die Kugel gleichmäßig umströmen und in die größere Bohrung eintreten kann, um dann durch den zwischen dem ersten Ventilkörper 11 und der Wand der großen Bohrung 10 gebildeten Ringspalt und zwischen der Dichtungsscheibe 9 und dem abgehobenen Ventilkörper 11 hindurch nach außen zu gelangen.If the content is now to be removed from the container, the
Wenn nun jemand versuchen sollte, den Druckbehälter, der möglicherweise während seines Gebrauchs bereits Schädigungen erfahren hat, erneut zu befüllen, würde die Kugel 22, die sich ja nun innerhalb der zweiten Bohrung 15 befindet, in die durch eine strichpunktierte Linie angedeutete Stellung bewegen, und zusammen mit dem Ventilsitz 16 die zweite Bohrung 15 verschließen. Somit ist ein erneutes Befüllen des Druckbehälters 1 unmöglich.If someone were to attempt to refill the pressure vessel, which may have already been damaged during use, the
Claims (9)
- One-way pressure reservoir, in particular by way of refill reservoir for refrigeration plants and air-conditioning systems, with a combined filling and extracting valve exhibiting a filling and extracting opening (5), said filling and extracting valve comprising a valve plug (11) guided displaceably in a bore (10) of a valve casing (8) and pressed by spring tension (13) against a valve seat (9), said valve plug being capable, both for the purpose of filling the pressure reservoir (1) and for extracting the pressurised contents of the reservoir, of being removed from the valve seat (9) against the action of the spring tension (13), said filling and extracting valve also comprising a second valve plug (22) which prior to the first filling of the reservoir (1) is held at a distance from its valve seat (16) by a locking device (18) which is capable of being overridden and is permeable with respect to fluid, whereby a tappet (20) acting upon the second valve plug (22) is provided which is capable of being actuated from the filling and extracting opening (5) and with which the second valve plug (22) is capable of being pressed over the pliable locking device (17, 18), as a result of which the second valve plug (22) after overriding the locking device (17, 18) constitutes, together with its valve seat (16), a check valve preventing the reservoir (1) from being filled again, characterised in that the valve casing (8) is formed from synthetic material so as to be integral with a first bore (10) for receiving the first valve plug and a second bore (15) for receiving the second valve plug (22), the first bore (10) on the end located opposite the first valve seat (9) exhibits a shoulder (14) pointing radially inward and formed so as to be integral with the casing, whereby on said shoulder there is supported, on the one hand, a helical spring (13) pressing the first valve plug (11) against the first valve seat (9) and on said shoulder, on the other hand, the locking device (17, 18) for the second valve plug (22) is formed, whereby the shoulder (14) exhibits projections (18) projecting radially inward into the circular outline of the second bore (15), said projections also being formed from synthetic material so as to be integral with the valve casing (8).
- Pressure reservoir according to Claim 1, characterised in that the projections are designed as ends (18), lying radially inward, of radial bridges (17) arranged on the shoulder (14) and distributed uniformly over the periphery.
- Pressure reservoir according to Claim 1 or 2, characterised in that the projections (18), viewed from the smaller second bore (15), converge together conically towards the larger first bore (10).
- Pressure reservoir according to one of Claims 1 to 3, characterised in that the second valve plug (22) is designed to be axially symmetrical and has a smaller diameter than the second bore (15).
- Pressure reservoir according to one of Claims 1 to 4, characterised in that the helical spring is supported on the bridges (17) formed on the shoulder (14) and has an inside diameter which is slightly larger than that of the second valve plug (22).
- Pressure reservoir according to one of Claims 1 to 5, characterised in that the second valve plug (22) is a sphere.
- Pressure reservoir according to one of Claims 1 to 6, characterised in that the material of the second valve plug (22) is harder than that of the projections (18).
- Pressure reservoir according to one of Claims 1 to 7, characterised in that the tappet (20) is formed from synthetic material so as to be integral with the first valve plug (11) and is arranged coaxially in the first bore (10) of the valve casing (8).
- Pressure reservoir according to one of Claims 1 to 8, characterised in that the tappet (20) is surrounded at a distance by a collar (21) of the first valve plug (11) and the helical spring (13) engages the first valve plug (11) within the intermediate space between tappet (20) and collar (21).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9013730U DE9013730U1 (en) | 1990-10-02 | 1990-10-02 | Disposable pressure vessels, especially as refill containers for refrigeration and air conditioning systems |
| DE9013730U | 1990-10-02 | ||
| PCT/EP1991/001723 WO1992006019A1 (en) | 1990-10-02 | 1991-09-10 | Non-returnable pressure vessel, especially as a filling container for cooling and air conditioning installations |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0550503A1 EP0550503A1 (en) | 1993-07-14 |
| EP0550503B1 true EP0550503B1 (en) | 1994-07-13 |
Family
ID=6858000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91916406A Expired - Lifetime EP0550503B1 (en) | 1990-10-02 | 1991-09-10 | Non-returnable pressure vessel, especially as a filling container for cooling and air conditioning installations |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5305925A (en) |
| EP (1) | EP0550503B1 (en) |
| DE (2) | DE9013730U1 (en) |
| WO (1) | WO1992006019A1 (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5400920A (en) * | 1993-07-29 | 1995-03-28 | Minnesota Mining And Manufacturing Company | One-time fill aerosol valve |
| US5383487A (en) * | 1994-03-29 | 1995-01-24 | Home; William | Refill-prevention valve |
| US5586589A (en) * | 1995-05-19 | 1996-12-24 | Monsanto Company | Refillable closed container system |
| WO2001035015A1 (en) * | 1999-11-10 | 2001-05-17 | Walter Tosto Serbatoi S.P.A | Cartridge connecting system for combustible gas distributors |
| DE10050085C1 (en) * | 2000-10-10 | 2001-10-31 | Jochem Koetting | Container closure element e.g. for analysis or reaction tube, provided as sphere, sphere segment, section or layer with paramagnetic core |
| US6561237B1 (en) | 2000-11-28 | 2003-05-13 | Brasscorp Ltd. | Apparatus and method for urging fluid into a pressurized system |
| KR100884650B1 (en) * | 2002-12-26 | 2009-02-20 | 정현수 | Bottle cap |
| US6932238B2 (en) * | 2003-01-28 | 2005-08-23 | Air Liquide Advanced Technologies U.S. Llc | Non-refillable valve device |
| US7077171B2 (en) * | 2004-05-21 | 2006-07-18 | Interdynamics, Inc. | Controlled leakage container and method |
| US8074965B2 (en) * | 2004-10-19 | 2011-12-13 | Eric Carrato | Device for connecting a gas-operated appliance and a gas cartridge |
| FR2901863B1 (en) * | 2006-06-06 | 2008-08-22 | Applic Des Gaz Soc Par Actions | LIQUID COMBUSTIBLE GAS CARTRIDGE |
| US20070284395A1 (en) * | 2006-06-09 | 2007-12-13 | Scott Specialty Gases, Inc. | Container and method for maintaining stability of gas mixtures |
| US7971454B2 (en) * | 2008-07-28 | 2011-07-05 | Datacolor Holding Ag | Beaker type dyeing machine |
| WO2010041709A1 (en) * | 2008-10-09 | 2010-04-15 | 株式会社ダイゾー | Sealing structure for aerosol container, aerosol container, and aerosol container manufacturing method |
| KR101543298B1 (en) * | 2008-10-13 | 2015-08-10 | 에스케이 텔레콤주식회사 | / Video encoding/decoding apparatus and Variable OBMC apparatus and method |
| DE102008053716B4 (en) * | 2008-10-29 | 2012-09-27 | Khs Gmbh | Container, in particular large-volume disposable plastic containers such as Keg for receiving drinks |
| US10113780B2 (en) | 2011-11-14 | 2018-10-30 | The Armor All/Stp Products Company | Refrigerant charging assemblies and methods of use |
| US10131486B2 (en) * | 2012-07-27 | 2018-11-20 | The Chemours Company Fc, Llc | Can tap |
| US9145240B2 (en) * | 2013-04-25 | 2015-09-29 | Owens-Brockway Glass Container Inc. | Container fitment |
| CN105980264B (en) * | 2013-12-03 | 2019-05-07 | 三谷阀门有限公司 | Sprayer housing body mechanism and the atomizing product for having the sprayer housing body mechanism |
| DE202014001720U1 (en) * | 2014-02-27 | 2015-03-02 | Gerhard Brugger | donor |
| CN110159815A (en) * | 2019-07-02 | 2019-08-23 | 王健 | Refrigerant container Self-sealing valve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3704813A (en) * | 1969-12-08 | 1972-12-05 | George C Devol | Valve systems for non-refillable containers |
| DE2559444C3 (en) * | 1975-01-29 | 1979-06-13 | Deutsche Praezisions-Ventil Gmbh, 6234 Hattersheim | Valve for pressurized gas packs |
| IT1087449B (en) * | 1977-11-17 | 1985-06-04 | Coster Tecnologie Speciali Spa | IMPROVEMENT IN AEROSOL DISPENSING VALVES |
| FR2536818B1 (en) * | 1982-11-29 | 1987-06-12 | Sanden John V D | VALVE VALVE FOR PRESSURE CONTAINERS, FOR EXAMPLE COMPRESSED GAS BOTTLES |
| US4543980A (en) * | 1983-10-13 | 1985-10-01 | Sanden John A V D | Valve for pressurized containers |
| US4573611A (en) * | 1984-06-11 | 1986-03-04 | Amtrol Inc. | Non-refillable valve |
| US4921214A (en) * | 1989-05-18 | 1990-05-01 | Amtrol Inc. | Non-refillable packless valve for pressurized containers |
| ES2044466T3 (en) * | 1989-05-29 | 1994-01-01 | Air Liquide | VALVE ASSEMBLY FOR LOW PRESSURE FLUID CONTAINER, AND CONTAINER EQUIPPED WITH SUCH ASSEMBLY. |
-
1990
- 1990-10-02 DE DE9013730U patent/DE9013730U1/en not_active Expired - Lifetime
-
1991
- 1991-09-10 EP EP91916406A patent/EP0550503B1/en not_active Expired - Lifetime
- 1991-09-10 DE DE59102198T patent/DE59102198D1/en not_active Expired - Fee Related
- 1991-09-10 US US07/916,005 patent/US5305925A/en not_active Expired - Fee Related
- 1991-09-10 WO PCT/EP1991/001723 patent/WO1992006019A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| US5305925A (en) | 1994-04-26 |
| WO1992006019A1 (en) | 1992-04-16 |
| DE9013730U1 (en) | 1992-02-06 |
| DE59102198D1 (en) | 1994-08-18 |
| EP0550503A1 (en) | 1993-07-14 |
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