EP0022084A1 - Device for vacuum sealing preserving jars used in the household - Google Patents

Device for vacuum sealing preserving jars used in the household Download PDF

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Publication number
EP0022084A1
EP0022084A1 EP80810206A EP80810206A EP0022084A1 EP 0022084 A1 EP0022084 A1 EP 0022084A1 EP 80810206 A EP80810206 A EP 80810206A EP 80810206 A EP80810206 A EP 80810206A EP 0022084 A1 EP0022084 A1 EP 0022084A1
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Prior art keywords
glass
hood
closed
lid
valve
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EP80810206A
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German (de)
French (fr)
Inventor
Günter Dipl. Ing. Baum
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
    • B67B3/00—Closing bottles, jars or similar containers by applying caps
    • B67B3/24—Special measures for applying and securing caps under vacuum

Definitions

  • the present invention relates to a device for have to be sealed s s under vacuum of Einkoch- used for household or jars, particularly those glasses which are provided with light, usually metallic covers, the edges of which are equipped on the inside with an elastic sealing layer, with which they rest on the upper glass edges.
  • the preserving jars of the aforementioned type which have been proposed and used to date are generally closed in such a way that a ring which can be screwed to the glass neck or a second screw-on lid is guided over the light lid mentioned and which more or less strongly adjusts the edge of the lid according to the intensity of the screwing Glass rim presses.
  • the subsequent cooking process heats the air that remains in the glass so that it expands and, if the intensity of the screwing permits, partially escapes and, when it cools down later, a negative pressure remains in the glass, which is intended to ensure that the glass is sealed is deficient insofar as the heated internal air of the glass can hardly escape if the screw is properly tightened, or if the glass is cooked in a pressure cooker (autoclave) the air cannot escape at all, because in this situation pressures and temperatures inside and outside the glass are practically the same are big.
  • the object of the present invention is to ensure the sealing of preserving glasses of the type described, especially those into which the separately cooked product has been poured hot, independently of the initial air volume and without using thermal processes.
  • the invention achieves the object as follows: A hood is placed over the glass opening, which is provided with a loose, light cover, and is supported tightly on the glass.
  • the interior of the hood is connected to a vacuum pump via a hose line, so that a vacuum is generated in the hood. Since the light cover lies loosely, the air in the glass will flow out.
  • a special valve ensures that after vacuuming, the atmospheric air only flows back into the interior of the hood after sufficient pressure has been exerted on the lid, which was originally free on the glass rim, to achieve an initial tightness between the lid and the glass rim.
  • the atmospheric air pressure that quickly builds up inside the hood and the resulting pressure on the lid ensures that the glass is permanently sealed.
  • 1 represents the preserving or preserving jar with the bead 2 and the threads 3 on the glass neck.
  • the light usually metallic lid 5, the edge of which is coated on the side facing the glass with an elastic, easily deformable sealing compound 6.
  • the hood 7 is advantageously bell-shaped for reasons of stability.
  • the device can be adapted to these differences. This is best done using adapter rings. These can be inside or outside the hood. In the present exemplary embodiment, the solution with an internal adaptation ring has been chosen, which is recommended for several reasons: the air volume to be pumped out remains smaller and the distance between the valve pin 23a and the cover 5 remains unchanged.
  • an annular groove 8 is provided in the interior of the hood 7.
  • a sealing ring 10 made of elastic material, such as rubber, ensures a tight fit on the bead 2 of the glass.
  • the shape of the outer edge 11 of the adaptation ring 9 corresponds to the bead 2 of a glass, the neck width of which corresponds to the hood 7. Without the adaptation ring, the hood 7 would sit with its sealing ring 12 directly on the bead of the correspondingly larger glass.
  • a knurl 13 is provided on its lower edge.
  • the pipe socket 14 is used to connect the connecting hose 15 to the vacuum pump, which is not shown here, but which can, for example, be a water jet pump, as described in my Swiss Patent No. 614165 from November 15, 1979. It is advantageous if the vacuum pump has a check valve so that when the pump is switched off, neither air nor operating water from the pump can flow back into the vented hood 7.
  • the special inlet valve for the atmospheric air is arranged in the middle of the hood 7.
  • the outer guide tube 16 of this valve is molded directly onto the hood.
  • the hollow valve cylinder 17 slides in it.
  • Two O-rings 18 ensure the seal between the guide tube 16 and the valve cylinder 17.
  • the valve cylinder is delimited at the bottom by the base 19, which limits the sliding path in the upward direction as a stop 20.
  • Small feet 21 projecting from the base 19 are provided so that free air circulation is ensured between the two when the valve base 19 contacts the cover 5.
  • a conical bore 22 is provided in the bottom 19, in which the frustoconical end 23a of the valve pin 23 sits tightly.
  • the guide jacket 23b of the valve pin 23 is more interrupted several times, so that air can flow past the valve pin to a sufficient extent, ie can flow through the channels 23c into the lower part 24a of the valve cylinder cavity 24.
  • the valve cylinder is closed at its upper end by the valve head 25 by means of a snap lock 26. The atmospheric air enters the valve cylinder cavity through the inlet openings 27.
  • the compression spring 28 which is biased to the required degree, fulfills two functions: on the one hand, it ensures a tight fit of the frustoconical end 23a of the valve pin 23 in the conical bore 22 and, on the other hand, it gives the current of the atmospheric air through the bore 22 only when the frustoconical end 23a of the valve pin 23 presses on the cover 5 with sufficient force.
  • the spring 29 is provided to hold the valve as a whole in its initial position, which is necessary so that the cover 5 can rise freely during the suction process. The dimensioning of the spring 29 must take into account the weight of the movable valve part, the friction of the 0-rings 18 and the pressure difference between the free atmosphere and the inside of the vacuum-sealed hood.
  • the mode of operation is as follows: the hood 7, which is connected to a vacuum pump via the hose 15, is placed over the opening of the glass 1, on the edge 4 of which the lid 5 lies loosely. An initial pressure on the hood causes it to sit tightly on the glass. As a result of the external overpressure which arises during vacuuming and acts on the hood from all sides, the hood is held tightly against the glass without outside help.
  • the vacuum pump provided with a non-return valve is switched off and pressed on the valve head 25.
  • the valve cylinder 17 lowers and the valve pin end 23a presses on the lid 5, so that its edge coating, the sealing compound 6, is pressed against the glass rim 4 .
  • Only when the appropriately dimensioned preload of the spring 28 has been overcome is the valve pin end 23a pushed back into the conical bore 22, so that the atmospheric air through the openings 27, the channels 23c and finally through the free space of the bore 22 into the interior of the hood 7 can flow.
  • the inflowing air creates there extremely quickly the atmospheric air pressure, which definitely keeps the glass 1 closed and releases the hood sucked on the glass.
  • the influence of the lid weight on the pressure difference between the hood and the glass interior is minimal. With an internal hood pressure of 70 torr and a lid weight of 6 pond and a glass neck rim diameter of 6 cm, the pressure difference is 0.156 torr, which is about 0.22%, which is practically negligible. At an external pressure of 730 Torr, the closing force acting on the lid would be approx. 25 kp in the present example, which corresponds to an absolutely secure closure of the glass.
  • adaptation to glasses of different sizes and neck widths can also be carried out by means of externally arranged adaptation rings.
  • These can be arranged, for example, in such a way that several such rings form a vessel of variable height which is closed at the bottom and into which the glass (1) to be closed is placed.
  • the hood (7) will no longer sit with its sealing ring (12) directly on the glass (1), but on the upper edge of the uppermost adaptation ring. This creates a tight vessel surrounding the glass on all sides, in which the required negative pressure is generated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Vacuum Packaging (AREA)

Abstract

Die Vorrichtung verschliesst das Einmachglas (1) durch Erzeugung eines kräftigen Unterdruckes im Restvolumen des Einmachglases. Dies geschieht dadurch, dass eine von einer äusseren Vakuumpumpe zu entlüftende Haube (7), gegen das Glas dichtend, über dessen Oeffnung geführt wird, auf der ein leichter Deckel lose aufliegt. Durch den in der Haube (7) erzeugten Unterdruck wird der Deckel (5) angehoben und die ursprünglich im Glase (1) verbliebene Lust abgesaugt. Ein spezielles Ventil (16-29) lässt atmosphärische Luft erst dann wieder in die Haube (7) strömen, wenn der Deckel (5) mit genügender Kraft dichtend gegen den Rand (4) der Glasöffnung gedrückt wird. Der äussere Ueberdruck hält das Glas und dauerhaft verschlossen. Ein oder mehrere Adaptationsringe (9) ermöglichen die Anpassung der Vorrichtung an die Halsweite des jeweils zu verschliessenden Glases (1) oder bilden um dieses ein äusseres, unten geschlossenes Gefäss variabler Höhe, welches oben von der Haube (7) mit ihrem Dichtungsring (12) dicht geschlossen wird.The device closes the mason jar (1) by generating a strong negative pressure in the remaining volume of the mason jar. This is done in that a hood (7) to be vented by an external vacuum pump, sealing against the glass, is guided over the opening on which a light cover lies loosely. Due to the negative pressure generated in the hood (7), the lid (5) is raised and the pleasure originally remaining in the glass (1) is sucked off. A special valve (16-29) only allows atmospheric air to flow back into the hood (7) when the cover (5) is pressed with sufficient force against the edge (4) of the glass opening. The external overpressure keeps the glass permanently closed. One or more adaptation rings (9) allow the device to be adapted to the neck width of the glass (1) to be closed in each case or form an outer, variable-height vessel closed at the bottom, which is removed from the top of the hood (7) with its sealing ring (12). is tightly closed.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Verschlies- sen unter Vakuum von im Haushalt verwendeten Einkoch- oder Einmachgläsern, insbesondere von solchen Gläsern, die mit leichten, meist metallischen Deckeln versehen sind, deren Ränder auf der Innenseite mit einer elastischen Dichtungsschicht ausgerüstet sind, mit denen sie auf den oberen Glasrändern aufliegen.The present invention relates to a device for have to be sealed s s under vacuum of Einkoch- used for household or jars, particularly those glasses which are provided with light, usually metallic covers, the edges of which are equipped on the inside with an elastic sealing layer, with which they rest on the upper glass edges.

Die bis dato vorgeschlagenen und verwendeten Einkochgläser der vorgenannten Art werden generell so verschlossen, dass über den erwähnten leichten Deckel ein am Glashals verschraubbarer Ring oder ein zweiter verschraubbarer Deckel geführt wird, der den Rand des Deckels gemäss der Intensität des Verschraubens mehr oder weniger stark auf den Glasrand presst. Durch anschliessenden Kochprozess wird die im Glas verbliebene Luft erwärmt, so dass sie sich ausdehnt und, falls die Intensität des Verschraubens dies zulässt, teilweise entweicht und beim späteren Abkühlen im Glas ein Unterdruck zurückbleibt, der den dichten Verschluss des Glases gewährleisten soll.- Dieses Verfahren ist insofern mangelhaft, als bei entsprechend kräftiger Verschraubung die erwärmte Innenluft des Glases kaum entweichen kann oder, falls das Glas im Dampfkochtopf (Autoklav) gekocht wird, die Luft garnicht entweichen kann, weil in dieser Situation Drücke und Temperaturen innerhalb und ausserhalb des Glases praktisch gleich gross sind.The preserving jars of the aforementioned type which have been proposed and used to date are generally closed in such a way that a ring which can be screwed to the glass neck or a second screw-on lid is guided over the light lid mentioned and which more or less strongly adjusts the edge of the lid according to the intensity of the screwing Glass rim presses. The subsequent cooking process heats the air that remains in the glass so that it expands and, if the intensity of the screwing permits, partially escapes and, when it cools down later, a negative pressure remains in the glass, which is intended to ensure that the glass is sealed is deficient insofar as the heated internal air of the glass can hardly escape if the screw is properly tightened, or if the glass is cooked in a pressure cooker (autoclave) the air cannot escape at all, because in this situation pressures and temperatures inside and outside the glass are practically the same are big.

Im allgemeinen kann durch thermische Unterschiede nur dann ein ins Gewicht fallender Unterdruck im Glas erzeugt werden, wenn das anfängliche Luftvolumen im Glase relativ gross ist. Dies gilt sowohl für den Fall, dass das Glas gekocht wird, als auch dann, wenn das separat gekochte Füllgut heiss in das kalte Glas gefüllt wird.-Wegen der erwähnten Mängel ist das vorgenannte Verfahren ungenügend.In general, a significant negative pressure in the glass can only be generated by thermal differences if the initial air volume in the glass is relatively large. This applies both in the event that the glass is boiled and when the separately cooked contents are filled into the cold glass while hot. Because of the shortcomings mentioned, the aforementioned method is insufficient.

Die vorliegende Erfindung stellt sich die Aufgabe, das Verschliessen von Einkochgläsern der beschriebenen Art, speziell auch solchen, in welche das separat gekochte Gut heiss eingefüllt wurde, sicher, unabhängig vom anfänglichen Luftvolumen und ohne Anwendung thermischer Prozesse zu bewerkstelligen.The object of the present invention is to ensure the sealing of preserving glasses of the type described, especially those into which the separately cooked product has been poured hot, independently of the initial air volume and without using thermal processes.

Die Erfindung löst die gestellte Aufgabe wie folgt: Ueber die mit einem lose aufliegenden leichten Deckel versehene Glasöffnung wird eine Haube gestülpt, die sich dicht auf das Glas abstützt. Ueber eine Schlauchleitung wird das Innere der Haube mit einer Vakuumpumpe verbunden, so dass in der Haube ein Unterdruck erzeugt wird. Da der leichte Deckel lose aufliegt, wird die im Glase befindliche Luft abströmen. Ein spezielles Ventil bewerkstelligt, dass nach erfolgter Vakuumierung die atmosphärische Luft erst dann in das Haubeninnere zurückströmt, nachdem auf den ursprünglich frei auf dem Glasrand liegenden Deckel ein ausreichender Druck ausgeübt worden ist, um eine anfängliche Dichtigkeit zwischen Deckel und Glasrand zu erzielen. Der im Inneren der Haube sehr schnell sich wieder aufbauende atmosphärische Luftdruck und die daraus resultierende Dru&kraft auf den Deckel sorgt für einen dauerhaften dichten Verschluss des Glases.The invention achieves the object as follows: A hood is placed over the glass opening, which is provided with a loose, light cover, and is supported tightly on the glass. The interior of the hood is connected to a vacuum pump via a hose line, so that a vacuum is generated in the hood. Since the light cover lies loosely, the air in the glass will flow out. A special valve ensures that after vacuuming, the atmospheric air only flows back into the interior of the hood after sufficient pressure has been exerted on the lid, which was originally free on the glass rim, to achieve an initial tightness between the lid and the glass rim. The atmospheric air pressure that quickly builds up inside the hood and the resulting pressure on the lid ensures that the glass is permanently sealed.

Im folgenden wird anhand der Zeichnungen ein Ausführungsbeispiel der Erfindung beschrieben. Es zeigt

  • Figur 1 die Haube im Schnitt durch eine vertikale Symmetrieebene,
  • Figur 2 die Haube in Ansicht von oben,
  • Figur 3 das Ventil aus Figur 1 in grösserem Massstab,
  • Figur 4 einen Horizontalschnitt durch das Ventil aus Figur 3, auf der Höhe des unteren 0-Ringes geschnitten, und
  • Figur 5 das Ventil von unten gesehen.
An exemplary embodiment of the invention is described below with reference to the drawings. It shows
  • FIG. 1 shows the hood in section through a vertical plane of symmetry,
  • FIG. 2 shows the hood from above,
  • FIG. 3 shows the valve from FIG. 1 on a larger scale,
  • Figure 4 is a horizontal section through the valve of Figure 3, cut at the level of the lower 0-ring, and
  • Figure 5 seen the valve from below.

In diesen Figuren stellt 1 das Einkoch- oder Einmachglas dar mit dem Wulst 2 und den Gewindegängen 3 am Glashals. Auf dem Rand 4 der Glasöffnung liegt der leichte, meist metallische Deckel 5, dessen Rand auf der dem Glas zugekehrten Seite mit einer elastischen, leicht deformierbaren Dichtungsmasse 6 beschichtet ist. Die Haube 7 wird aus Stabilitätsgründen mit Vorteil glockenförmig ausgeführt.In these figures, 1 represents the preserving or preserving jar with the bead 2 and the threads 3 on the glass neck. On the edge 4 of the glass opening lies the light, usually metallic lid 5, the edge of which is coated on the side facing the glass with an elastic, easily deformable sealing compound 6. The hood 7 is advantageously bell-shaped for reasons of stability.

Da die im Handel erhältlichen Gläser verschiedene Oeffnungsweiten aufweisen, ist es wünschbar, dass die Vorrichtung diesen Verschiedenheiten angepasst werden kann. Dies geschieht am besten durch Verwendung von Adaptationsringen. Diese können innerhalb oder ausserhalb der Haube liegen. Im vorliegenden Ausführungsbeispiel ist die Lösung mit einem innen liegenden Adaptationsring gewählt worden, was sich aus mehreren Gründen empfiehlt: Das abzupumpende Luftvolumen bleibt kleiner und die Distanz zwischen dem Ventilzapfen 23a .und dem Deckel 5 bleibt unverändert. Zur Befestigung des Adaptationsringes 9 ist im Inneren der Haube 7 eine ringförmige Nut 8 vorgesehen. Ein Dichtungsring 10 aus elastischem Material, z.B. aus Gummi, sorgt für ein dichtes Aufsitzen auf dem Wulst 2 des Glases. Der äussere Rand 11 des Adaptationsringes 9 entspricht in seiner Form dem Wulst 2 eines Glases, dessen Halsweite der Haube 7 entspricht. Ohne Adaptationsring würde die Haube 7 mit ihrem Dichtungsring 12 direkt auf dem Wulst des entsprechend grösseren Glases aufsitzen. Um den Adaptationsring 9 leicht einsetzen oder entfernen zu können, ist an seinem unteren Rand ein Rändel 13 vorgesehen.Because the glasses available in stores have different opening widths it is desirable that the device can be adapted to these differences. This is best done using adapter rings. These can be inside or outside the hood. In the present exemplary embodiment, the solution with an internal adaptation ring has been chosen, which is recommended for several reasons: the air volume to be pumped out remains smaller and the distance between the valve pin 23a and the cover 5 remains unchanged. To attach the adaptation ring 9, an annular groove 8 is provided in the interior of the hood 7. A sealing ring 10 made of elastic material, such as rubber, ensures a tight fit on the bead 2 of the glass. The shape of the outer edge 11 of the adaptation ring 9 corresponds to the bead 2 of a glass, the neck width of which corresponds to the hood 7. Without the adaptation ring, the hood 7 would sit with its sealing ring 12 directly on the bead of the correspondingly larger glass. In order to be able to insert or remove the adaptation ring 9 easily, a knurl 13 is provided on its lower edge.

Der Rohrstutzen 14 dient dem Anschluss des Verbindungsschlauches 15 zur Vakuumpumpe, die hier nicht wiedergegeben ist, die aber beispielsweise eine Wasserstrahlpumpe sein kann, wie sie in meinem Schweizer Patent.Nr. 614165 vom 15.11.1979 beschrieben worden ist. Es ist von Vorteil, wenn die Vakuumpumpe ein Rückschlagventil besitzt, so dass beim Abschalten der Pumpe weder Luft noch Betriebswasser der Pumpe in die entlüftete Haube 7 zurückströmen kann.The pipe socket 14 is used to connect the connecting hose 15 to the vacuum pump, which is not shown here, but which can, for example, be a water jet pump, as described in my Swiss Patent No. 614165 from November 15, 1979. It is advantageous if the vacuum pump has a check valve so that when the pump is switched off, neither air nor operating water from the pump can flow back into the vented hood 7.

In der Mitte der Haube 7 ist das spezielle Einlassventil für die atmosphärische Luft angeordnet. Das äussere Führungsrohr 16 dieses Ventils ist der Haube direkt angeformt. In diesem gleitet der hohle Ventilzylinder 17. Zwei 0-Ringe 18 gewährleisten die Dichtung zwischen Führungsrohr 16 und Ventilzylinder 17. Der Ventilzylinder ist unten durch den Boden 19 begrenzt, der als Anschlag 20 den Gleitweg in Aufwärtsrichtung begrenzt. Kleine vom Boden 19 abstehende Füsse 21 sind vorgesehen, damit beim Kontakt des Ventilbodens 19 mit dem Deckel 5 zwischen diesen beiden eine freie Luftzirkulation gewährleistet wird. Im Boden 19 ist eine konische Bohrung 22 vorgesehen, in welcher das kegelstumpfförmige Ende 23a des Ventilzapfens 23 dicht sitzt. Der Führungsmantel 23b des Ventilzapfens 23 ist mehrfach unterbrochen, so dass Luft in ausreichendem Masse am Ventilzapfen vorbeistreichen kann, d.h. durch die Kanäle 23c in den unteren Teil 24a des Ventilzylinderhohlraumes 24 strömen kann. Der Ventilzylinder wird an seinem oberen Ende durch den Ventilkopf 25 mittels eines Schnappverschlusses 26 geschlossen. Der Eintritt der atmosphärischen Luft in den Ventiizylinderhohlraum erfolgt durch die Einlassöffnungen 27. Die auf das erforderliche Mass vorgespannte Druckfeder 28 erfüllt zwei Aufgaben: Einerseits gewährleistet sie einen dichten Sitz des kegelstumpfförmigen Endes 23a des Ventilzapfens 23 in der konischen Bohrung 22 und andererseits gibt sie den Strom der atmosphärischen Luft durch die Bohrung 22 erst dann frei, wenn das kegelstumpfförmige Ende 23a des Ventilzapfens 23 mit ausreichender Kraft auf den Deckel 5 drückt. Die Feder 29 ist vorgesehen, um das Ventil als Ganzes in seiner Ausgangsstellung zu halten, was erforderlich ist, damit der Deckel 5 sich während des Absaugvorganges frei heben kann. Die Bemessung der Feder 29 muss dem Gewicht des beweglichen Ventilteiles, der Reibung der 0-Ringe 18 sowie dem Druckunterschied zwischen der freien Atmosphäre und dem Innern der vakuumisierten Haube Rechnung tragen.In the middle of the hood 7, the special inlet valve for the atmospheric air is arranged. The outer guide tube 16 of this valve is molded directly onto the hood. The hollow valve cylinder 17 slides in it. Two O-rings 18 ensure the seal between the guide tube 16 and the valve cylinder 17. The valve cylinder is delimited at the bottom by the base 19, which limits the sliding path in the upward direction as a stop 20. Small feet 21 projecting from the base 19 are provided so that free air circulation is ensured between the two when the valve base 19 contacts the cover 5. A conical bore 22 is provided in the bottom 19, in which the frustoconical end 23a of the valve pin 23 sits tightly. The guide jacket 23b of the valve pin 23 is more interrupted several times, so that air can flow past the valve pin to a sufficient extent, ie can flow through the channels 23c into the lower part 24a of the valve cylinder cavity 24. The valve cylinder is closed at its upper end by the valve head 25 by means of a snap lock 26. The atmospheric air enters the valve cylinder cavity through the inlet openings 27. The compression spring 28, which is biased to the required degree, fulfills two functions: on the one hand, it ensures a tight fit of the frustoconical end 23a of the valve pin 23 in the conical bore 22 and, on the other hand, it gives the current of the atmospheric air through the bore 22 only when the frustoconical end 23a of the valve pin 23 presses on the cover 5 with sufficient force. The spring 29 is provided to hold the valve as a whole in its initial position, which is necessary so that the cover 5 can rise freely during the suction process. The dimensioning of the spring 29 must take into account the weight of the movable valve part, the friction of the 0-rings 18 and the pressure difference between the free atmosphere and the inside of the vacuum-sealed hood.

Die Wirkungsweise ist folgende: Man stülpt die über den Schlauch 15 mit einer Vakuumpumpe verbundene Haube 7 über die Oeffnung des Glases 1, auf dessen Rand 4 der Deckel 5 lose aufliegt. Ein anfänglicher Druck auf die Haube bewirkt ein dichtes Aufsitzen auf dem Glase. Durch den beim Vakuumieren entstehenden, allseitig auf die Haube wirkenden äusseren Ueberdruck wird diese ohne Hilfe von aussen, dicht anliegend, am Glase gehalten.The mode of operation is as follows: the hood 7, which is connected to a vacuum pump via the hose 15, is placed over the opening of the glass 1, on the edge 4 of which the lid 5 lies loosely. An initial pressure on the hood causes it to sit tightly on the glass. As a result of the external overpressure which arises during vacuuming and acts on the hood from all sides, the hood is held tightly against the glass without outside help.

Nach erfolgter Entlüftung schaltet man die mit einem Rückschlagventil versehene Vakuumpumpe ab und drückt auf den Ventilkopf 25. Dabei senkt sich der Ventilzylinder 17 und das Ventilzapfenende 23a drückt auf den Deckel 5, so dass dessen Randbeschichtung, die Dichtungsmasse 6, gegen den Glasrand 4 gepresst wird. Erst wenn die entsprechend bemessene Vorspannung der Feder 28 überwunden ist, wird das Ventilzapfenende 23a in die konische Bohrung 22 zurückgedrückt, so dass die atmosphärische Luft durch die Oeffnungen 27, die Kanäle 23c und schliesslich durch den Freiraum der Bohrung 22 in das Innere der Haube 7 strömen kann. Dort erstellt die einströmende Luft äusserst schnell den atmosphärischen Luftdruck, der das Glas 1 definitiv verschlossen hält und die am Glas angesaugte Haube freigibt.After venting, the vacuum pump provided with a non-return valve is switched off and pressed on the valve head 25. The valve cylinder 17 lowers and the valve pin end 23a presses on the lid 5, so that its edge coating, the sealing compound 6, is pressed against the glass rim 4 . Only when the appropriately dimensioned preload of the spring 28 has been overcome is the valve pin end 23a pushed back into the conical bore 22, so that the atmospheric air through the openings 27, the channels 23c and finally through the free space of the bore 22 into the interior of the hood 7 can flow. The inflowing air creates there extremely quickly the atmospheric air pressure, which definitely keeps the glass 1 closed and releases the hood sucked on the glass.

Der Einfluss des Deckelgewichtes auf die Druckdifferenz zwischen Haube und Glasinneren ist gering. Bei einem Haubeninnendruck von 70 Torr und einem Deckelgewicht von 6 pond sowie einem Glashalsranddurchmesser von 6 cm beträgt die Druckdifferenz 0,156 Torr, was ca. 0,22 % ausmacht, also praktisch vernachlässigbar ist. Bei einem Aussendruck von 730 Torr würde im vorliegenden Beispiel die auf den Deckel wirkende Verschlusskraft ca. 25 kp sein, was einem absolut sicheren Verschluss des Glases entspricht.The influence of the lid weight on the pressure difference between the hood and the glass interior is minimal. With an internal hood pressure of 70 torr and a lid weight of 6 pond and a glass neck rim diameter of 6 cm, the pressure difference is 0.156 torr, which is about 0.22%, which is practically negligible. At an external pressure of 730 Torr, the closing force acting on the lid would be approx. 25 kp in the present example, which corresponds to an absolutely secure closure of the glass.

Die Anpassung an Gläser verschiedener Grössen und Halsweiten kann, wie erwähnt, auch durch aussen angeordnete Adaptationsringe erfolgen. Diese können beispielsweise so angeordnet sein, dass mehrere solcher Ringe ein unten geschlossenes Gefäss variabler Höhe bilden, in welches das zu verschliessende Glas (1) gestellt wird. Die Haube (7) wird dann mit ihrem Dichtungsring (12) nicht mehr direkt auf dem Glas (1), sondern auf dem oberen Rand des obersten Adaptationsringes sitzen. Dabei entsteht ein das Glas allseitig umgebendes dichtes Gefäss, in welchem der erforderliche Unterdruck erzeugt wird.As mentioned, the adaptation to glasses of different sizes and neck widths can also be carried out by means of externally arranged adaptation rings. These can be arranged, for example, in such a way that several such rings form a vessel of variable height which is closed at the bottom and into which the glass (1) to be closed is placed. The hood (7) will no longer sit with its sealing ring (12) directly on the glass (1), but on the upper edge of the uppermost adaptation ring. This creates a tight vessel surrounding the glass on all sides, in which the required negative pressure is generated.

Claims (3)

1. Vorrichtung zum Verschliessen von Einkoch- resp. Einmachgläsern, die mit einem leichten, meist metallischen Deckel (5) versehen sind, der am Rande einen Dichtungsring (6) aus leicht deformierbarem elastischen Material aufweist, dadurch gekennzeichnet, dass über die mit dem Deckel bedeckte Oeffnung des Glases (1) eine Haube (7) geführt wird, die sich dichtend an das Glas legt, und in der mittels einer äusseren Vakuumpumpe ein Unterdruck erzeugt wird, so dass die im Glas (1) verbliebene Luft entweicht, und dass nach beendeter Entlüftung ein Ventil (16 - 29) die atmosphärische Luft erst dann in das unter Unterdruck stehende Innere der Haube (7) einströmen lässt, nachdem der Deckel (5) mit ausreichender Kraft dicht schliessend auf den Glasrand (4) gedrückt worden ist.1. Device for closing Einkoch- or. Mason jars, which are provided with a light, mostly metallic lid (5), which has a sealing ring (6) on the edge made of easily deformable elastic material, characterized in that a hood (1) over the opening of the glass (1) covered with the lid 7), which lies sealingly against the glass and in which a vacuum is generated by means of an external vacuum pump, so that the air remaining in the glass (1) escapes, and that after the ventilation has been completed, a valve (16 - 29) Only allow atmospheric air to flow into the interior of the hood (7), which is under vacuum, after the cover (5) has been pressed tightly onto the glass rim (4) with sufficient force. 2. Vorrichtung nach Patentanspruch 1, dadurch gekennzeichnet, dass ein oder mehrere Adaptationsringe (9) für die Anpassung der Haube (7) an die Halsweite des jeweils zu verschliessenden Glases (1) vorgesehen sind.2. Device according to claim 1, characterized in that one or more adaptation rings (9) are provided for adapting the hood (7) to the neck width of the glass (1) to be closed in each case. 3. Vorrichtung nach Patentansprüchen 1 und 2, dadurch gekennzeichnet, dass mehrere Adaptationsringe so angeordnet werden, dass sie um das Glas (1) ein äusseres, unten geschlossenes Gefäss variabler Höhe bilden, welches oben von der Haube (7) mit ihrem Dichtungsring (12) dicht geschlossen wird.3. Device according to claims 1 and 2, characterized in that a plurality of adaptation rings are arranged in such a way that they form an outer, variable-height vessel closed at the bottom, which is above the hood (7) with its sealing ring (12 ) is tightly closed.
EP80810206A 1979-06-23 1980-06-20 Device for vacuum sealing preserving jars used in the household Withdrawn EP0022084A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5839/79 1979-06-23
CH583979A CH645516A5 (en) 1979-06-23 1979-06-23 DEVICE FOR SEALING UNDER VACUUM OF PRESERVATION LENSES.

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EP0022084A1 true EP0022084A1 (en) 1981-01-07

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EP80810206A Withdrawn EP0022084A1 (en) 1979-06-23 1980-06-20 Device for vacuum sealing preserving jars used in the household

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US (1) US4372096A (en)
EP (1) EP0022084A1 (en)
CH (1) CH645516A5 (en)

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Also Published As

Publication number Publication date
US4372096A (en) 1983-02-08
CH645516A5 (en) 1984-10-15

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