EP0631484B1 - Recipient fraicheur a fermeture hermetique - Google Patents

Recipient fraicheur a fermeture hermetique Download PDF

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Publication number
EP0631484B1
EP0631484B1 EP93906500A EP93906500A EP0631484B1 EP 0631484 B1 EP0631484 B1 EP 0631484B1 EP 93906500 A EP93906500 A EP 93906500A EP 93906500 A EP93906500 A EP 93906500A EP 0631484 B1 EP0631484 B1 EP 0631484B1
Authority
EP
European Patent Office
Prior art keywords
container
support surface
air
space
hood
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
Application number
EP93906500A
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German (de)
English (en)
Other versions
EP0631484A1 (fr
Inventor
Waldemar Kiener
Herbert Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
L and H LEMITEG LEBENSMITTEL- und FREIZEITTECHNIK GmbH
Original Assignee
L and H LEMITEG LEBENSMITTEL- und FREIZEITTECHNIK GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by L and H LEMITEG LEBENSMITTEL- und FREIZEITTECHNIK GmbH filed Critical L and H LEMITEG LEBENSMITTEL- und FREIZEITTECHNIK GmbH
Publication of EP0631484A1 publication Critical patent/EP0631484A1/fr
Application granted granted Critical
Publication of EP0631484B1 publication Critical patent/EP0631484B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
    • A45C11/20—Lunch or picnic boxes or the like
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/245—Internal membrane, floating cover or the like isolating the contents from the ambient atmosphere

Definitions

  • the invention relates to an airtight sealable food storage container for organic substances, especially food, which has the features of the preamble of claim 1.
  • an airtight lockable food storage container which has a base plate and a bell-like cover, which is removably arranged on the base plate, and which encloses a storage space above the base plate on all sides.
  • a sealing element is arranged on the contact surface between the cover and the base plate.
  • a vacuum pump is connected to the storage space and can be actuated as a function of the closed state of the cover, as a result of which a vacuum is generated in the storage space.
  • a pressure compensation device is also provided, which is coupled to the storage space.
  • the lid is provided with a valve, through which air can be sucked out of the container by means of a hand pump.
  • the invention has for its object to provide a known container compared to improved fresh food containers. This object is achieved by a container having the features of claim 1.
  • the airtight film Thanks to the airtight film, the space in which the negative pressure must be generated and maintained is practically on that of the volume to be kept fresh is limited. This reduces the effort for sucking out the air and maintaining the negative pressure.
  • the walls of the container need not withstand a relatively high pressure differential. Another advantage is that the cleaning of the container is simplified by the film, since this can be easily replaced.
  • the upper part of the container is designed as a hood.
  • the support surface is easily accessible, so that both the introduction of the goods into the container and the removal do not pose any difficulties.
  • the film in the unfolded state preferably has a hood shape that is at least approximately matched to the hood.
  • the film adjoins a self-contained sealing strip which, when the container is closed, is clamped between a circumferential bearing surface of the lower part for the edge surfaces of the upper part and this edge surface.
  • An additional seal between the upper part and lower part is therefore not necessary. Since the foil has to be replaced from time to time, this also ensures that a fully functional seal is always used.
  • the air pumping device is driven by an electric motor. In this way, in conjunction with a pressure sensor, it can be ensured in a simple manner that the air is always sucked out of the usable space to the extent necessary for keeping it fresh, regardless of how large the volume of the usable space is.
  • the air pumping device is preferably arranged below the contact surface, which is expediently provided by a closed, plate is tightly connected to the side wall of the lower part.
  • a particle separator is preferably arranged between the suction opening of the channel through which the air is extracted and the air pumping device.
  • the air pumping device has a preferably monostable 2-way valve which, in its one switching state, opens the first suction line leading from the pump of the air pumping device to the space delimited by the support surface and the film, and that from the pump to the of the film and the hood limited space leading second suction line closes and in the other switching position the first suction line closed and the second suction line keeps open.
  • a control device for the motor driving the pump and an electromagnet actuating the valve is connected in a preferred embodiment to a switch of a pressure sensor which activates the pump when the pressure in the work space is too high and switches it off when the negative pressure in the work space is the intended one Has reached value.
  • a switch of a pressure sensor which activates the pump when the pressure in the work space is too high and switches it off when the negative pressure in the work space is the intended one Has reached value.
  • a second Switch provided, which can be connected in series with the switch of the pressure sensor and whose switching state depends on whether the container is open or properly closed.
  • An airtight sealable fresh storage container for organic substances, in particular foodstuffs, with a cuboid-like shape in the exemplary embodiment, as shown in FIG. 1, has a lower part 1 and a cover 2 as an upper part, both of which are dimensionally stable and consist of a plastic.
  • a clear plastic can also be used for the hood 2.
  • the lower part 1 has a flat, rectangular base plate 3, which is detachably connected to the side walls of the lower part 1 which are perpendicular to it. Slightly below the edge surface 4 of the side walls lying in a plane parallel to the base plate 3, a flat plate, parallel to the base plate 3, is formed onto the latter, the upper side of which forms the support surface 5 for the goods to be kept fresh.
  • the side walls of the hood 2 whose shape differs from that of a cuboid in the exemplary embodiment only by a bevel at the transition from the top to the front, are flush with the side walls of the lower part 1 when the hood 2 with the edge surface of its side walls on the edge surface 4 of the Side walls of the lower part 1 rests.
  • Two hinges 6 connect the lower part 1 and the hood 2 at the rear, which is why the hood 2 only has to be folded backwards to open the container and has to be folded forward to close. The user therefore need not pay attention that the hood 2 is correctly positioned when it is closed. The correct positioning is ensured by the hinges 6.
  • a tension lock 7 is provided in the center, the closing element of which overlaps a nose formed on the hood 2 during the closing process and then pulls the front wall of the hood 2 against the edge surface of the front wall of the lower part 1. All edge surfaces of the hood 2 are pressed against the edge surface 4 of the lower part 1 with sufficient force.
  • the side walls of the hood 2 have a bead-like widening along their lower edge, as a result of which the edge surface formed here is adapted to the width of the edge surface 4.
  • This widespread edge surface of the side walls of the hood 2 is provided with a circumferential groove which is open towards the edge surface 4 and into which a sealing strip 8 can be inserted.
  • the dimensions of the groove and the sealing strip 8 are chosen so that when the hood 2 is closed, the sealing strip 8 rests with pressure both on the wall of the groove and on the edge surface 4, so that when the hood 2 is closed, the container is airtight.
  • the edge of an airtight film 9 is molded onto the sealing strand 8, which in the unfolded state has a shape and size adapted to the hood 2.
  • the sealing strand 8 lying in the groove with slight clamping need only be pulled out of this groove in order to be able to clean or replace the film 9. Accordingly, only the sealing strip 8 of the cleaned or a new film 9 needs to be inserted into the groove in order to re-insert the film 9 into the one in FIG. 1 bring position shown in the hood 2.
  • the usable space i.e. the space available for the goods to be kept fresh
  • the support surface 5 opens into the support surface 5 an air suction duct 10.
  • the pipe 11 delimiting it is on the underside of the Support surface 5 formed plate.
  • a removable sieve 12 covers the mouth opening of the air extraction duct 10.
  • a tube 13 which is arranged concentrically to it but has a larger diameter, is formed at one end onto the plate forming the bearing surface 5.
  • the other end of the tube 13 pointing towards the base plate 3 plunges into a cup-shaped collecting container 14, which is inserted from below into an opening in the base plate 3 and, if necessary, can be pulled off to empty its contents.
  • a nozzle 13 'for the connection of a first suction line 15 is formed laterally on the tube 13.
  • the tubes 11 and 13 therefore form a siphon-like particle separator in which particles that are not retained by the sieve 12 are separated from the extracted air. They fall into the collecting container 14.
  • the first suction line 15 leads to a first connection of a monostable 2-way valve 16. From this connection, a normally open valve duct leads to a pump connection stub 17. A normally closed valve duct also leads from a second connection to the pump connection stub 17 , which in the exemplary embodiment is connected directly to the intake manifold of a pump 18 which is driven by an electric motor 19. As shown in FIG. 3, the first suction line 15 leads to a first connection of a monostable 2-way valve 16. From this connection, a normally open valve duct leads to a pump connection stub 17. A normally closed valve duct also leads from a second connection to the pump connection stub 17 , which in the exemplary embodiment is connected directly to the intake manifold of a pump 18 which is driven by an electric motor 19. As shown in FIG.
  • the two-way valve 16 for the two valves which are provided in one or the other valve channel, has a common valve actuating rod 20, which can be moved longitudinally in the valve housing, has a valve body 21 of one valve and a valve body 22 of the other valve, by means of which in Change the valve channel leading to the first connection or the valve channel leading to the second connection can be closed and opened.
  • the valve actuation rod 20 is actuated by means of a Electromagnet 23 pushed against the force of a return spring 24 to the right when looking as shown in FIG. 3.
  • a cylindrical magnetic flux guide body 25 arranged on the valve actuation rod 20 is then located inside the electromagnet 23.
  • the guide surfaces of the valve housing for the valve actuation rod 20, or, as in the exemplary embodiment, those of the valve actuation rod 20 are formed by longitudinal ribs, between which the air along the valve actuation rod 20 can step through.
  • the second connection of the 2-way valve 16 is connected via a second suction line 26 to the space between the film 9 and the inner surface of the hood 2, in order to lift the film 9 from the goods to be kept fresh and against the inside before opening the hood 2 the hood 2 to be able to suck.
  • an air duct leads from the second connection to an air inlet opening of the 2-way valve 16 which is provided at the end of the valve housing shown on the left in FIG. 3.
  • this ventilation channel is closed by a valve body 22 ′ which is also arranged on the valve actuating rod 20.
  • the first connection is connected via an aeration channel to an air inlet opening of the 2-way valve 16, which is provided at the end of the valve housing shown on the right in FIG. 3.
  • This ventilation duct also contains a valve actuation rod 20 arranged valve body 21 ', which bears close to its valve seat when the valve is not activated and is lifted off its seat when the valve is activated and thus releases the ventilation channel.
  • a bulge 27 is formed on the side wall of the hood 2 shown on the left in FIG contains a first connecting channel 28 which opens on the one hand in the inner surface of this side wall and on the other hand in the widened edge here.
  • a bead 29 formed on the lower part 1 and containing a second connecting channel 30 is aligned on the bead 27. This connects with its one end when the hood 2 is closed to the first connecting channel 28 and, on the other hand, opens into the inner surface of the side wall of the lower part 1, where the second suction line 26 (not shown in FIG. 4) connects.
  • a pressure sensor 31 which is attached to the underside of the plate forming the support surface 5 and, in the exemplary embodiment, has a membrane on which the pressure in the useful space acts directly.
  • the pressure sensor 31 actuates a microswitch 32 in such a way that the microswitch is closed when air has to be extracted from the work space and is open when the negative pressure in the work space has the desired value.
  • microswitch 33 In series with the microswitch 32 is a microswitch 33 which is actuated by a plunger which keeps the microswitch 33 open when the latch 7 is open and holds the microswitch 33 in the closed state when the latch 7 is closed.
  • the two microswitches 32 and 33 are connected to a control device 34, the components of which are provided on a circuit board 35 arranged below the support surface 5 in the lower part 1.
  • the electric motor is also connected to the control device 34 19, the electromagnet 23 and two arranged in the front wall of the lower part 1 signal lights 36 and 37 connected, which glow green or red in the activated state.
  • the green light means that the desired negative pressure prevails in the utility room, whereas the red light indicates a fault.
  • a power switch 38 is also provided in the front wall of the lower part 1, by means of which the connection between the flexible power cable (not shown) and the control device 34 can be established and interrupted.
  • the microswitch 33 assumes the closed position shown in FIG. 3. This also applies to the microswitch 32 because the ambient pressure still prevails in the usable space.
  • the 2-way valve 16 remains in the switching position shown in FIG. 3 and the electric motor 19 is switched on. Therefore, the air is now extracted from the usable space. In this case, the film 9 lies against the goods to be kept fresh, air being able to flow into the space between the film 9 and the hood 2.
  • the microswitch 32 opens, whereby the electric motor 19 is switched off.
  • the green signal light 36 which is a light emitting diode, is switched on.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Packages (AREA)
  • Vacuum Packaging (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)

Claims (17)

  1. Réceptacle pour garder frais à fermeture totalement étanche à l'air pour des substances organiques, en particulier des denrées alimentaires, comprenant une partie inférieure (1) résistant à la déformation, qui présente une surface d'appui pour la marchandise qui doit être gardée fraîche, une partie supérieure (2) également résistant à la déformation, qui est déposée de manière à pouvoir être démontée sur la partie inférieure (1) en formant un espace utilisable au-dessus de la surface d'appui, et un mécanisme de pompe à faire le vide d'air (19) pour l'air régnant dans l'espace utilisable, caractérisé en ce que l'espace utilisable est délimité dans la zone délimitée par la partie supérieure (2), par une feuille mince (9) étanche à l'air dont le bord est relié de manière amovible en étanchéité à l'air avec une paroi délimitant par ailleurs l'espace utilisable et en ce qu'on prévoit dans cette paroi, une ouverture d'aspiration (10) du mécanisme de pompe à faire le vide d'air (19).
  2. Réceptacle selon la revendication 1, caractérisé en ce que la partie supérieure est réalisée en forme de couvercle (2).
  3. Réceptacle selon la revendication 2, caractérisé en ce que la feuille mince (9) possède, à l'état déployé, une forme et une dimension qui correspondent au moins de manière approximative à celles du couvercle (2).
  4. Réceptacle selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la feuille mince (9) présente, le long de son bord, un joint d'étanchéité (8) qui, lorsque le récipient est fermé, est serré entre une surface d'appui périphérique (5) de la partie inférieure (1) et une surface marginale périphérique de la partie supérieure (2).
  5. Réceptacle selon la revendication 4, caractérisé en ce que la surface périphérique de la partie supérieure (2) est munie d'une rainure périphérique ouverte en direction de la surface d'appui (5) de la partie inférieure (1), dans laquelle vient s'insérer le joint d'étanchéité (8).
  6. Réceptacle selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la partie supérieure (2) est reliée à la partie inférieure (1) au moyen d'au moins une articulation (6).
  7. Réceptacle selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la partie supérieure (2) peut être maintenue en contact étanche à l'air avec la partie inférieure (1), au moyen d'au moins un mécanisme de fermeture à genouillère (7).
  8. Réceptacle selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la surface d'appui (5) est formée par une plaque qui est réalisée, de préférence en une seule pièce, en étant reliée en étanchéité à l'air, avec la paroi latérale de la partie inférieure (1), à une certaine distance au-dessus de la surface d'emplacement de cette dernière.
  9. Réceptacle selon l'une quelconque des revendications 1 à 8, caractérisé par un premier canal de liaison (28) qui débouche d'une part dans la surface interne de la paroi latérale de la partie supérieure (2) et d'autre part, dans la surface marginale de la partie supérieure (2), et un second canal de liaison (30) dont la première extrémité, lorsque le réceptacle est fermé, se raccorde à l'extrémité du premier canal de liaison (28) débouchant dans la surface marginale et dont l'autre extrémité est reliée au mécanisme de pompe à faire le vide d'air.
  10. Réceptacle selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la partie inférieure (1) présente, à une certaine distance en dessous de la surface d'appui (5), une plaque de fond (3) reliée aux parois latérales et en ce que le mécanisme de pompe à faire le vide d'air se trouve dans l'espace intermédiaire ménagé entre la surface d'appui (5) et la plaque de fond (3).
  11. Réceptacle selon l'une quelconque des revendications 1 à 10, caractérisé en ce que, dans la surface d'appui (5) se trouve l'ouverture d'embouchure d'un canal (10) d'aspiration d'air du mécanisme de pompe à faire le vide d'air, et en ce que, entre le canal d'aspiration d'air (10) et la pompe (18) du mécanisme de pompe à faire le vide d'air, est intercalé un séparateur de particules (11, 13).
  12. Réceptacle selon la revendication 11, caractérisé en ce que le séparateur de particules réalisé en forme de siphon présente un tube (13) s'étendant vers le bas, à partir de la surface d'appui (5), à l'intérieur duquel pénètre un tube de diamètre inférieur formant le canal d'aspiration (10), en ce que l'extrémité inférieure du tube 13 de plus grand diamètre pénètre dans un récipient collecteur (14) qui peut être retiré et en ce que ce tube présente, au-dessus de l'extrémité inférieure du tube (11) formant le canal d'aspiration d'air (10), une dérivation (13') pour un conduit d'aspiration (15) menant à la pompe (18).
  13. Réceptacle selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le mécanisme de pompe à faire le vide d'air présente une soupape à deux voies (16) de préférence monostable qui, dans son premier état de commutation, ouvre le premier conduit d'aspiration (15) menant de la pompe (18) au canal d'aspiration (10) et maintient fermé le second conduit d'aspiration (26) menant de la pompe (18) au second canal de liaison (30).
  14. Réceptacle selon l'une quelconque des revendications 1 à 13, caractérisé par un mécanisme de commande (34) pour un moteur électrique (19) entraînant la pompe (18) et par un électroaimant (23) entraînant la soupape à deux voies (16).
  15. Réceptacle selon la revendication 14, caractérisé en ce qu'un commutateur (32) d'un capteur de pression (31) est relié au mécanisme de commande (34), qui met la pompe (18) hors circuit lorsque la sous-pression dans l'espace utilisable a atteint la valeur prévue.
  16. Réceptacle selon la revendication 15, caractérisé par des lampes témoins (36, 37) commandées par le commutateur (32) du capteur de pression (31).
  17. Réceptacle selon la revendication 15 au 16, caractérisé en ce qu'un second commutateur 33 est relié au mécanisme de commande (34) dont l'état de commutation dépend du fait de savoir si le réceptacle est fermé de manière conforme ou de manière non conforme.
EP93906500A 1992-03-18 1993-03-11 Recipient fraicheur a fermeture hermetique Expired - Lifetime EP0631484B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4208656 1992-03-18
DE4208656A DE4208656C2 (de) 1992-03-18 1992-03-18 Luftdicht verschließbarer Frischhaltebehälter
PCT/EP1993/000557 WO1993018696A1 (fr) 1992-03-18 1993-03-11 Recipient fraicheur a fermeture hermetique

Publications (2)

Publication Number Publication Date
EP0631484A1 EP0631484A1 (fr) 1995-01-04
EP0631484B1 true EP0631484B1 (fr) 1996-12-04

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ID=6454362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93906500A Expired - Lifetime EP0631484B1 (fr) 1992-03-18 1993-03-11 Recipient fraicheur a fermeture hermetique

Country Status (7)

Country Link
US (1) US5570628A (fr)
EP (1) EP0631484B1 (fr)
AT (1) ATE145804T1 (fr)
AU (1) AU3747193A (fr)
CA (1) CA2132196A1 (fr)
DE (2) DE4208656C2 (fr)
WO (1) WO1993018696A1 (fr)

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CN105691876A (zh) * 2016-01-27 2016-06-22 苏州浦灵达自动化科技有限公司 一种自动化抽真空容器盖

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AU3747193A (en) 1993-10-21
ATE145804T1 (de) 1996-12-15
DE4208656A1 (de) 1993-09-30
DE4208656C2 (de) 1995-07-20
WO1993018696A1 (fr) 1993-09-30
CA2132196A1 (fr) 1993-09-19
EP0631484A1 (fr) 1995-01-04
US5570628A (en) 1996-11-05
DE59304683D1 (de) 1997-01-16

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