EP2162690B1 - Vacuum sealing system - Google Patents

Vacuum sealing system Download PDF

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Publication number
EP2162690B1
EP2162690B1 EP08761155.4A EP08761155A EP2162690B1 EP 2162690 B1 EP2162690 B1 EP 2162690B1 EP 08761155 A EP08761155 A EP 08761155A EP 2162690 B1 EP2162690 B1 EP 2162690B1
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EP
European Patent Office
Prior art keywords
vacuum
sealing system
suction tube
vacuum sealing
compartment
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EP08761155.4A
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German (de)
French (fr)
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EP2162690A1 (en
Inventor
Junhong Feng
Zhong Quan Suan
Qiwu Zhu
Weizhong Zhu
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/043—Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment

Definitions

  • This invention relates to a vacuum system and is primarily concerned with a vacuum refresh system having control methods for home appliances, especially electric refrigerators.
  • foods can be stored at low temperatures for cold storage or freezing for a relatively long period of time.
  • the length of the shelf life of the food is not only determined by the temperature and humidity, but is also influenced by factors such as oxygen content and airborne bacteria in the environment of the food storage.
  • a Vakuumfrischhaltesystem according to the preamble of claim 1 is made CN 2901196 Y known.
  • the object of this invention is to provide an improved vacuum refueling system.
  • This evacuation system will be able to automatically realize the vacuum seal for the can after evacuation.
  • the described switching device is a check valve.
  • the described vacuum gauge is a vacuum sensor connected to the suction tube.
  • the described control device comprises a control board and a control panel, the described control panel comprising a push-button start and a push-button warning.
  • the attachment of a switching device allows the outside air to be directed into the exhaust duct after evacuation of the vacuum system. Due to the pressure difference between the suction pipe and the evacuated can, the automatic sealing of the can is realized and prevents leakage caused by the vacuum level of the can.
  • the vacuum refueling system of one embodiment of this invention includes a can 20, one end of the can 20 having a venting device 21 and the other end being provided with a suction device 22.
  • the ventilation device 21 and the suction device 22 may be non-return valves.
  • the can 20 is connected to this exhaust duct 24 via a connection device 23, which is mounted on one end of the can 20 and on one end of the suction duct 24, respectively.
  • the suction pipe 24 may be a copper pipe or a plastic pipe. Its nature must give the pipeline a very good airtightness.
  • the other end of the exhaust duct 24 is connected to the evacuation device 26, for example a vacuum pump. To avoid the noise during operation of the device for To reduce evacuation 26, a noise abatement device 27 is mounted on the vacuum pump.
  • a four-way connector 31 is attached. This four-way connector is connected to the switching device 25 and the vacuum gauge 29. In this procedure, the switching device 25 is a check valve.
  • the vacuum gauge 29 is a vacuum sensor that can measure changes in the vacuum level in the suction tube 24.
  • the vacuum refresh system also has a control device.
  • This control device includes a control board 28 and a control panel 32.
  • the control board 28 is connected to the switching device 25, the evacuation device 26, the vacuum gauge 29, and the control board 32, receives feedback signals from these devices, and outputs corresponding commands.
  • On the control panel 32 a push-button start 32 and a push-button warning 34 are attached.
  • the role of the push button Start 32 is to start the evacuation device.
  • the role of the warning button 34 is to issue a warning signal when the vacuum holding system is in an abnormal operating condition.
  • the warning function of the vacuum keep-fresh system is described in detail and, therefore, will not be described again here.
  • the steps of the vacuum control system control method of this invention are as follows: First, the user on the switchboard 32 depresses the start button 32 and starts the process of evacuation.
  • the control board 28 judges the position of the switching device 25. When the switching device 25 is in the open position, the control board 28 gives the command to switch the switching device to the closed position. Subsequently, the control board 28 gives the command to start the device for evacuation 26, which begins via the suction pipe 24 with the evacuation of the can 20.
  • the vacuum gauge 29 continuously measures the vacuum level in the exhaust duct 24 and reports the measured values to the control board 28.
  • the control board 28 issues a command to control the operation of the apparatus Evacuation 26 is maintained. After a certain time, when the vacuum level in the exhaust duct 24 has reached the set value set previously, the control board 28 issues a command that stops the operation of the evacuation device 26. Finally, after stopping the operation of the evacuation device 26, the control board 28 issues a command which switches the switching device 25 from the closed position to the open position and introduces the outside air into the exhaust pipe 24 at a certain flow rate. This completes the process of evacuation.
  • the box 20 comprises a lower part 204 and a lid 202, with which the lower part 204 is closed.
  • the ventilation device 21 and the suction device 22 are respectively attached to the two ends of the lid 202.
  • the connecting device 23 on the cover 202 is connected to the suction device 22.
  • the suction device 22 is structurally a check valve.
  • suction device 22 The special construction of the suction device 22 is described in another Chinese patent application for a Invention of this Applicant entitled "Vacuum fresh food can and this vacuum fresh food can using household electrical appliances" described in detail, is therefore omitted at this point of a repeated description. Since the vacuum seal point of the can 20 is the location of the aspirator 22 on the lid 202, even if there is a leak or slack at the location of the connector 23, the air may only enter the connector 23 and the aspiration tubing 24 but not in the can 20. The vacuum seal of the can 20 is not affected by the occurrence of leaks on the connector 23 and on the suction pipe 24.
  • the vacuum refreshment system of this invention may be used individually, may also be mounted in household electrical appliances and used as an accessory. In particular, it can be installed in household electric refrigerators or in freezers.
  • the can 20 can be used in the cold storage room of the refrigerator.
  • the suction pipe 24 can be sunk in the foam layer of the box of the refrigerator.
  • the connecting piece 23 connected to the suction pipe 24 can be mounted on the inner wall of the cold storage room.
  • the control panel 32 may be mounted on the door of the refrigerator or the inner wall of the cold storage room to allow easy operation by the user.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Vacuum Packaging (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Description

[Technologisches Gebiet][Technological area]

Diese Erfindung bezieht sich auf ein Vakuumsystem und bezieht sich vorrangig auf ein Vakuumfrischhaltesystem mit Steuerungsverfahren für elektrische Haushaltsgeräte, insbesondere elektrische Kühlschränke.This invention relates to a vacuum system and is primarily concerned with a vacuum refresh system having control methods for home appliances, especially electric refrigerators.

[Technologischer Hintergrund][Technological background]

Wie allgemein bekannt ist, können Lebensmittel bei tiefen Temperaturen für die Kühllagerung oder die Gefrierung über einen relativ langen Zeitraum aufbewahrt werden. Die Länge der Lagerzeit der Lebensmittel wird nicht nur durch die Temperatur und die Feuchtigkeit bestimmt, sondern unterliegt auch Einflüssen durch Faktoren wie Sauerstoffgehalt und Bakterien der Luft in der Umgebung der Lebensmittelaufbewahrung. Um eine noch längere Aufbewahrungszeit der Lebensmittel zu erreichen, ist es wünschenswert, eine Lagerumgebung mit niedrigem Sauerstoffgehalt und geringer Bakterienbelastung zur Verfügung zu stellen, wie zum Beispiel eine Vakuumfrischhaltedose.As is well known, foods can be stored at low temperatures for cold storage or freezing for a relatively long period of time. The length of the shelf life of the food is not only determined by the temperature and humidity, but is also influenced by factors such as oxygen content and airborne bacteria in the environment of the food storage. In order to achieve an even longer shelf life of the food, it is desirable to provide a storage environment with low oxygen content and low bacterial load, such as a vacuum fresh food can.

Ein Vakuumfrischhaltesystem nach dem Oberbegriff des Anspruchs 1 ist aus CN 2901196 Y bekannt.A Vakuumfrischhaltesystem according to the preamble of claim 1 is made CN 2901196 Y known.

[Inhalt der Erfindung][Content of the invention]

Das Ziel dieser Erfindung besteht darin, ein verbessertes Vakuumfrischhaltesystem zur Verfügung zu stellen. Dieses Vakuumfrischhaltesystem ist nach der Evakuierung in der Lage, die Vakuumdichtung für die Dose automatisch zu realisieren.The object of this invention is to provide an improved vacuum refueling system. This evacuation system will be able to automatically realize the vacuum seal for the can after evacuation.

Zwecks Realisierung der vorstehenden Ziele der Erfindung wird ein Vakuumfrischhaltesystem mit den Merkmalen des Anspruchs 1 vorgeschlagen.For the realization of the above objects of the invention, a vacuum fresh holding system having the features of claim 1 is proposed.

Als eine weitere Verbesserung des Vakuumfrischhaltesystems dieser Erfindung handelt es sich bei der beschriebenen Schaltvorrichtung um ein Rückschlagventil.As a further improvement of the vacuum retainer system of this invention, the described switching device is a check valve.

Als eine weitere Verbesserung des Vakuumfrischhaltesystems dieser Erfindung handelt es sich bei der beschriebenen Vakuummessvorrichtung um einen Vakuumsensor, der mit der Absaugrohrleitung verbunden ist.As a further improvement of the vacuum keep-warm system of this invention, the described vacuum gauge is a vacuum sensor connected to the suction tube.

Als eine weitere Verbesserung des Vakuumfrischhaltesystems dieser Erfindung umfasst die beschriebene Steuervorrichtung eine Steuerplatine und eine Schalttafel, wobei die beschriebene Schalttafel einen Druckknopf Start und einen Druckknopf Warnung umfasst.As a further improvement of the vacuum keep-warm system of this invention, the described control device comprises a control board and a control panel, the described control panel comprising a push-button start and a push-button warning.

Der Nutzeffekt dieser Erfindung besteht in folgendem: durch die Anbringung einer Schaltvorrichtung kann die Außenluft nach der Evakuierung des Vakuumsystems in die Absaugrohrleitung geleitet werden. Durch die Druckdifferenz zwischen der Absaugrohrleitung und der evakuierten Dose wird die automatische Dichtung der Dose realisiert und der durch Lecks hervorgerufene Verlust des Vakuumniveaus der Dose verhindert.The benefit of this invention is as follows: the attachment of a switching device allows the outside air to be directed into the exhaust duct after evacuation of the vacuum system. Due to the pressure difference between the suction pipe and the evacuated can, the automatic sealing of the can is realized and prevents leakage caused by the vacuum level of the can.

[Kurze Erläuterung der Abbildungen][Brief explanation of the figures]

  • Abb. 1 zeigt das Schema eines Vakuumsystems eines handelsüblichen Kühlschranks. Fig. 1 shows the scheme of a vacuum system of a commercial refrigerator.
  • Abb. 2 zeigt das Schema des Vakuumfrischhaltesystems einer Verfahrensweise dieser Erfindung. Fig. 2 Figure 3 shows the scheme of the vacuum refresh system of one method of this invention.
  • Abb. 3 zeigt das Fließbild für das Steuerungsverfahren des Vakuumfrischhaltesystems dieser Erfindung. Fig. 3 Fig. 10 shows the flow chart for the control method of the vacuum keeping system of this invention.
  • Abb. 4 zeigt das räumliche Schema der Dose des Vakuumfrischhaltesystems einer Verfahrensweise dieser Erfindung. Fig. 4 shows the spatial scheme of the can of the vacuum fresh holding system of a method of this invention.
[Konkrete Verfahrensweise][Concrete procedure]

Wie in Abbildung 2 dargestellt, umfasst das Vakuumfrischhaltesystem einer Verfahrensweise dieser Erfindung eine Dose 20, wobei ein Ende der Dose 20 mit einer Belüftungsvorrichtung 21 und das andere Ende mit einer Absaugvorrichtung 22 versehen ist. Bei der Belüftungsvorrichtung 21 und der Absaugvorrichtung 22 kann es sich um Rückschlagventile handeln.As in Figure 2 1, the vacuum refueling system of one embodiment of this invention includes a can 20, one end of the can 20 having a venting device 21 and the other end being provided with a suction device 22. The ventilation device 21 and the suction device 22 may be non-return valves.

Die Dose 20 ist über eine Verbindungsvorrichtung 23, die jeweils auf einem Ende der Dose 20 und auf einem Ende der Absaugrohrleitung 24 angebracht ist, mit dieser Absaugrohrleitung 24 verbunden. Bei der Absaugrohrleitung 24 kann es sich um ein Kupferrohr oder auch um ein Kunststoffrohr handeln. Seine Beschaffenheit muss der Rohrleitung eine sehr gute Luftdichtheit verleihen. Das andere Ende der Absaugrohrleitung 24 ist mit der Vorrichtung zur Evakuierung 26 verbunden, zum Beispiel einer Vakuumpumpe. Um die Geräusche während des Betriebs der Vorrichtung zur Evakuierung 26 zu verringern, ist auf der Vakuumpumpe eine Vorrichtung zur Lärmbeseitigung 27 angebracht. In der Absaugrohrleitung 24 ist ein Vierwegeverbindungsstück 31 angebracht. Dieses Vierwegeverbindungsstück ist mit der Schaltvorrichtung 25 und der Vakuummessvorrichtung 29 verbunden. In dieser Verfahrensweise handelt es sich bei der Schaltvorrichtung 25 um ein Rückschlagventil. Wenn sich dieses Rückschlagventil in geschlossener Stellung befindet, wird die Außenluft daran gehindert, in die Absaugrohrleitung 24 zu gelangen. Wenn sich dieses Rückschlagventil in geöffneter Stellung befindet, wird die Außenluft mit einer bestimmten Strömungsgeschwindigkeit in die Absaugrohrleitung 24 geleitet. In dieser Verfahrensweise handelt es sich bei der Vakuummessvorrichtung 29 um einen Vakuumsensor, der die Veränderungen des Vakuumniveaus in der Absaugrohrleitung 24 messen kann. Wenn die Vorrichtung zur Evakuierung 26 in Betrieb ist, handelt es sich aufgrund der Verbindung von Absaugrohrleitung 24 und Dose 20 bei den Veränderungen des Vakuumniveaus in der Absaugrohrleitung 24 um die Veränderungen des Vakuumniveaus in der Dose 20.The can 20 is connected to this exhaust duct 24 via a connection device 23, which is mounted on one end of the can 20 and on one end of the suction duct 24, respectively. The suction pipe 24 may be a copper pipe or a plastic pipe. Its nature must give the pipeline a very good airtightness. The other end of the exhaust duct 24 is connected to the evacuation device 26, for example a vacuum pump. To avoid the noise during operation of the device for To reduce evacuation 26, a noise abatement device 27 is mounted on the vacuum pump. In the exhaust pipe 24, a four-way connector 31 is attached. This four-way connector is connected to the switching device 25 and the vacuum gauge 29. In this procedure, the switching device 25 is a check valve. When this check valve is in the closed position, the outside air is prevented from entering the suction pipe 24. When this check valve is in the open position, the outside air is passed into the suction pipe 24 at a certain flow rate. In this procedure, the vacuum gauge 29 is a vacuum sensor that can measure changes in the vacuum level in the suction tube 24. When the evacuation device 26 is in operation, the changes in the vacuum level in the evacuation conduit 24 due to the connection of the evacuation conduit 24 and can 20 to changes in the vacuum level in the evacuation conduit 24 are the changes in the vacuum level in the can 20.

Das Vakuumfrischhaltesystem verfügt außerdem noch über eine Steuervorrichtung. Diese Steuervorrichtung umfasst eine Steuerplatine 28 und eine Schalttafel 32. Die Steuerplatine 28 ist mit der Schaltvorrichtung 25, der Vorrichtung zur Evakuierung 26, der Vakuummessvorrichtung 29 sowie der Schalttafel 32 verbunden, empfängt Rückmeldungssignale von diesen Vorrichtungen und gibt entsprechende Befehle aus. Auf der Schalttafel 32 sind ein Druckknopf Start 32 und ein Druckknopf Warnung 34 angebracht. Die Rolle des Druckknopfs Start 32 besteht darin, die Vorrichtung zur Evakuierung zu starten. Die Rolle des Druckknopfs Warnung 34 besteht darin, ein Warnsignal auszugeben, wenn sich das Vakuumfrischhaltesystem in einem anomalen Betriebszustand befindet. In einem weiteren von diesem Antragsteller eingereichten chinesischen Patentantrag für eine Erfindung mit der Bezeichnung "Elektrischer Kühlschrank mit Vakuumfrischhaltesystem nebst Steuerungsverfahren" wird die Warnfunktion des Vakuumfrischhaltesystems detailliert beschrieben, weswegen an dieser Stelle auf eine erneute Beschreibung verzichtet wird.The vacuum refresh system also has a control device. This control device includes a control board 28 and a control panel 32. The control board 28 is connected to the switching device 25, the evacuation device 26, the vacuum gauge 29, and the control board 32, receives feedback signals from these devices, and outputs corresponding commands. On the control panel 32, a push-button start 32 and a push-button warning 34 are attached. The role of the push button Start 32 is to start the evacuation device. The role of the warning button 34 is to issue a warning signal when the vacuum holding system is in an abnormal operating condition. In another Chinese patent application filed by this Applicant for an invention entitled "Electric Refrigerator with Vacuum Keeping System and Control Method", the warning function of the vacuum keep-fresh system is described in detail and, therefore, will not be described again here.

Wie in Abbildung 3 dargestellt, lauten die Schritte des Steuerungsverfahrens für das Vakuumfrischhaltesystem dieser Erfindung wie folgt: Zuerst betätigt der Nutzer auf der Schalttafel 32 den Druckknopf Start 32 und startet den Prozess der Evakuierung. Die Steuerplatine 28 beurteilt die Stellung der Schaltvorrichtung 25. Wenn sich die Schaltvorrichtung 25 in geöffneter Stellung befindet, gibt die Steuerplatine 28 den Befehl zum Umschalten der Schaltvorrichtung auf geschlossene Stellung. Anschließend gibt die Steuerplatine 28 den Befehl zum Start der Vorrichtung zur Evakuierung 26, die über die Absaugrohrleitung 24 mit der Evakuierung der Dose 20 beginnt. Gleichzeitig misst die Vakuummessvorrichtung 29 fortlaufend das Vakuumniveau in der Absaugrohrleitung 24 und meldet die gemessenen Werte an die Steuerplatine 28. Wenn das Vakuumniveau in der Absaugrohrleitung 24 nicht den zuvor gesetzten Einstellwert erreicht, gibt die Stellkarte 28 einen Befehl, mit dem der Betrieb der Vorrichtung zur Evakuierung 26 aufrechterhalten wird. Nach einer bestimmten Zeit, wenn das Vakuumniveau in der Absaugrohrleitung 24 den zuvor gesetzten Einstellwert erreicht hat, gibt die Steuerplatine 28 einen Befehl, der die Tätigkeit der Vorrichtung zur Evakuierung 26 stoppt. Zuletzt gibt die Steuerplatine 28 nach dem Stopp der Tätigkeit der Vorrichtung zur Evakuierung 26 einen Befehl, der die Schaltvorrichtung 25 von geschlossener Stellung in geöffnete Stellung umschaltet und die Außenluft mit einer bestimmten Strömungsgeschwindigkeit in die Absaugrohrleitung 24 einleitet. Damit ist der Prozess der Evakuierung beendet.As in Figure 3 As shown, the steps of the vacuum control system control method of this invention are as follows: First, the user on the switchboard 32 depresses the start button 32 and starts the process of evacuation. The control board 28 judges the position of the switching device 25. When the switching device 25 is in the open position, the control board 28 gives the command to switch the switching device to the closed position. Subsequently, the control board 28 gives the command to start the device for evacuation 26, which begins via the suction pipe 24 with the evacuation of the can 20. At the same time, the vacuum gauge 29 continuously measures the vacuum level in the exhaust duct 24 and reports the measured values to the control board 28. When the vacuum level in the exhaust duct 24 does not reach the set value previously set, the control board 28 issues a command to control the operation of the apparatus Evacuation 26 is maintained. After a certain time, when the vacuum level in the exhaust duct 24 has reached the set value set previously, the control board 28 issues a command that stops the operation of the evacuation device 26. Finally, after stopping the operation of the evacuation device 26, the control board 28 issues a command which switches the switching device 25 from the closed position to the open position and introduces the outside air into the exhaust pipe 24 at a certain flow rate. This completes the process of evacuation.

Wie in Abbildung 4 dargestellt, umfasst die Dose 20 ein Unterteil 204 und einen Deckel 202, mit dem das Unterteil 204 verschlossen wird. Die Belüftungsvorrichtung 21 und die Absaugvorrichtung 22 sind jeweils an den beiden Enden des Deckels 202 angebracht. Die Verbindungsvorrichtung 23 auf dem Deckel 202 ist mit der Absaugvorrichtung 22 verbunden. In dieser Erfindung strömt nach dem Umschalten der Schaltvorrichtung 25 auf geöffnete Stellung die Außenluft in die Absaugrohrleitung 24 und über das Verbindungsstück 23 zur Absaugvorrichtung 22. Da sich die Dose 20 im Vakuumzustand befindet, entsteht zwischen dem Inneren und Äußeren der Dose 20 eine Druckdifferenz, wodurch der äußere Luftdruck auf die Absaugvorrichtung 22 drückt und die Vakuumdichtung für die Dose 20 realisiert. Bei dieser Absaugvorrichtung 22 handelt es sich vom Aufbau her um ein Rückschlagventil. Der spezielle Aufbau der Absaugvorrichtung 22 wird in einem anderen chinesischen Patentantrag für eine Erfindung dieses Antragstellers mit dem Titel "Vakuumfrischhaltedose und diese Vakuumfrischhaltedose verwendende elektrische Haushaltsgeräte" detailliert beschrieben, weswegen an dieser Stelle von einer nochmaligen Beschreibung abgesehen wird. Da es sich bei dem Vakuumdichtungspunkt der Dose 20 um die Stelle der Absaugvorrichtung 22 auf dem Deckel 202 handelt, kann die Luft, selbst wenn an der Stelle der Verbindungsvorrichtung 23 ein Leck oder eine Lockerung bestehen, auch nur in das Verbindungsstück 23 und die Absaugrohrleitung 24 gelangen, nicht jedoch in die Dose 20. Die Vakuumdichtung der Dose 20 wird nicht durch das Auftreten von Lecks am Verbindungsstück 23 und an der Absaugrohrleitung 24 beeinträchtigt.As in Figure 4 illustrated, the box 20 comprises a lower part 204 and a lid 202, with which the lower part 204 is closed. The ventilation device 21 and the suction device 22 are respectively attached to the two ends of the lid 202. The connecting device 23 on the cover 202 is connected to the suction device 22. In this invention, after switching the switching device 25 to the open position, the outside air flows into the suction pipe 24 and through the connector 23 to the suction device 22. Since the can 20 is in the vacuum state, a pressure difference is created between the inside and the outside of the can 20 the external air pressure presses on the suction device 22 and realizes the vacuum seal for the can 20. In this suction device 22 is structurally a check valve. The special construction of the suction device 22 is described in another Chinese patent application for a Invention of this Applicant entitled "Vacuum fresh food can and this vacuum fresh food can using household electrical appliances" described in detail, is therefore omitted at this point of a repeated description. Since the vacuum seal point of the can 20 is the location of the aspirator 22 on the lid 202, even if there is a leak or slack at the location of the connector 23, the air may only enter the connector 23 and the aspiration tubing 24 but not in the can 20. The vacuum seal of the can 20 is not affected by the occurrence of leaks on the connector 23 and on the suction pipe 24.

Das Vakuumfrischhaltesystem dieser Erfindung kann einzeln verwendet werden, kann auch in elektrische Haushaltsgeräte montiert und als Zubehör verwendet werden. Insbesondere kann es in elektrischen Haushaltskühlschränken oder in Gefrierschränken angebracht werden. In diesem Fall kann die Dose 20 im Kühllagerraum des Kühlschranks eingesetzt werden. Die Absaugrohrleitung 24 kann in der Schaumschicht des Kastens des Kühlschranks versenkt werden. Das mit der Absaugrohrleitung 24 verbundene Verbindungsstück 23 kann auf den Innenwand des Kühllagerraums angebracht werden. Die Schalttafel 32 kann auf der Tür des Kühlschranks oder der Innenwand des Kühllagerraums angebracht werden, um eine einfache Bedienung durch den Nutzer zu ermöglichen.The vacuum refreshment system of this invention may be used individually, may also be mounted in household electrical appliances and used as an accessory. In particular, it can be installed in household electric refrigerators or in freezers. In this case, the can 20 can be used in the cold storage room of the refrigerator. The suction pipe 24 can be sunk in the foam layer of the box of the refrigerator. The connecting piece 23 connected to the suction pipe 24 can be mounted on the inner wall of the cold storage room. The control panel 32 may be mounted on the door of the refrigerator or the inner wall of the cold storage room to allow easy operation by the user.

Es muss darauf hingewiesen werden, dass es sich bei der vorstehenden Beschreibung lediglich um eine Verfahrensweise für diese Erfindung handelt. Allgemeines technisches Personal aus diesem Gebiet kann auf der Grundlage der Berücksichtigung der vorstehenden Verfahrensweise ohne schöpferische Tätigkeit diese Erfindung in geeigneter Weise anpassen. Zum Beispiel kann es sich bei der Schaltvorrichtung 25 der Verfahrensweise in Abbildung 2 dieser Erfindung um ein Rückschlagventil handeln. Es kann sich aber auch um eine andere handelsübliche Schaltvorrichtung handeln, solange die Funktion realisiert werden kann, bei geöffneter Stellung die Außenluft einzuleiten und bei geschlossener Stellung die Absaugrohrleitung 24 abzudichten. Weiterhin kann zum Beispiel, was die Position der Vakuummessvorrichtung 29 betrifft, diese an die Absaugrohrleitung 24 angeschlossen oder auch auf der Dose 20 angebracht sein, solange die Funktion realisiert werden kann, die Veränderungen des Vakuumniveaus des Vakuumsystems in Echtzeit zu messen. Diese geeigneten Anpassungen sollen innerhalb des Schutzbereichs der Ansprüche dieser Erfindung liegen.It has to be pointed out that the above description is only a procedure for this invention. General technical personnel in this field can suitably adapt this invention on the basis of the consideration of the above procedure without creative activity. For example, in the switching device 25, the procedure in FIG Figure 2 this invention to act around a check valve. However, it can also be another commercially available switching device, as long as the function can be realized to initiate the open air in the open position and seal the suction pipe 24 in the closed position. Furthermore, for example, as far as the position of the vacuum measuring device 29 is concerned, it can be applied to the Suction pipe 24 may be connected or mounted on the box 20, as long as the function can be realized to measure the changes in the vacuum level of the vacuum system in real time. These suitable adaptations are intended to be within the scope of the claims of this invention.

Claims (6)

  1. Vacuum sealing system, comprising a compartment (20) having a suction device (22) and an aeration device (21) as well as a suction tube (24), wherein one end of the suction tube (24) is connected to a vacuum pump (26) and the other end is separably connected to the suction device (22) of the compartment (20) by way of a connecting piece, also having a vacuum measuring device (29) for measuring the vacuum level and a control device for controlling the vacuum sealing system, characterised in that a switching device (25) is also included, wherein the control device is configured to move the switching device (25) connected to the suction tube into the closed position when vacuumising the compartment (20) by means of the vacuum pump (26) via the suction tube (24) in order to prevent the penetration of outside air into the suction tube (24) and into the open position following the completion of the vacuumisation by means of the vacuum pump (26) in order to guide air into the already vacuumised suction tube (24).
  2. Vacuum sealing system according to claim 1, characterised in that the described switching device (25) is a return valve.
  3. Vacuum sealing system according to claim 1, characterised in that the described vacuum measuring device (29) is a vacuum sensor, which is connected to the suction tube (24).
  4. Vacuum sealing system according to claim 1, 2 or 3, characterised in that the described control device includes a control PCB (28) and a control panel (32).
  5. Vacuum sealing system according to claim 4, characterised in that the described control panel comprises a start pushbutton and a warning pushbutton.
  6. Electrical domestic appliance, in particular refrigerator or icebox, which comprises a box with a chilled storage compartment, characterised in that it also includes a vacuum sealing system according to any of the preceding claims, wherein the described compartment is attached in the chilled storage compartment.
EP08761155.4A 2007-06-28 2008-06-18 Vacuum sealing system Active EP2162690B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2007100247574A CN101331970B (en) 2007-06-28 2007-06-28 Vacuum preserving system and control method thereof
PCT/EP2008/057701 WO2009000724A1 (en) 2007-06-28 2008-06-18 Vacuum sealing system with a control method

Publications (2)

Publication Number Publication Date
EP2162690A1 EP2162690A1 (en) 2010-03-17
EP2162690B1 true EP2162690B1 (en) 2018-08-08

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Application Number Title Priority Date Filing Date
EP08761155.4A Active EP2162690B1 (en) 2007-06-28 2008-06-18 Vacuum sealing system

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Country Link
EP (1) EP2162690B1 (en)
CN (2) CN101331970B (en)
RU (1) RU2470239C2 (en)
WO (1) WO2009000724A1 (en)

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Also Published As

Publication number Publication date
CN101331970A (en) 2008-12-31
EP2162690A1 (en) 2010-03-17
RU2470239C2 (en) 2012-12-20
CN101688724A (en) 2010-03-31
CN101331970B (en) 2011-04-27
WO2009000724A1 (en) 2008-12-31
RU2010101157A (en) 2011-08-10

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