EP2974969B1 - Vacuum drawer for vacuum packing food - Google Patents

Vacuum drawer for vacuum packing food Download PDF

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Publication number
EP2974969B1
EP2974969B1 EP15174969.4A EP15174969A EP2974969B1 EP 2974969 B1 EP2974969 B1 EP 2974969B1 EP 15174969 A EP15174969 A EP 15174969A EP 2974969 B1 EP2974969 B1 EP 2974969B1
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EP
European Patent Office
Prior art keywords
vacuum
valve block
chamber
filter
filter element
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EP15174969.4A
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German (de)
French (fr)
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EP2974969A1 (en
Inventor
Stefan Bocks
Robert Kofler
Alexander Weweck
Florian Harlander
Peter Kopfensteiner
Lina Gronbach
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Michatek KS
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Michatek KS
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Publication of EP2974969A1 publication Critical patent/EP2974969A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/024—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for wrappers or bags
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B77/00—Kitchen cabinets
    • A47B77/04—Provision for particular uses of compartments or other parts ; Compartments moving up and down, revolving parts
    • A47B77/08—Provision for particular uses of compartments or other parts ; Compartments moving up and down, revolving parts for incorporating apparatus operated by power, including water power; for incorporating apparatus for cooking, cooling, or laundry purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum

Definitions

  • the invention relates to a vacuum drawer for vacuuming food with a closable vacuum chamber and at least one vacuum pump, the suction line is connected via at least one valve block to the vacuum chamber.
  • Vacuum sealers comprise a vacuum chamber into which a suitable container, for example in the form of a sealable bag, is inserted. Within the chamber extends a welding bar, which is vertically adjustable in the vertical direction. The filled with the food container is placed in the vacuum chamber, this hermetically sealed via a lid to produce by means of a vacuum pump, a chamber vacuum.
  • the suction port of the vacuum pump is connected via a suction line to the interior of the vacuum chamber.
  • intermediate valve block is provided which controls the volume flow for venting from the vacuum chamber in the direction of the pump or for ventilation in the vacuum chamber.
  • the US 2009/0255221 A1 discloses a vacuum sizer for vacuuming food.
  • the DE 299 22 199 U1 discloses a manual freshness keeping device having a clamp body and a hand pump with suction line.
  • an oil-lubricated rotary vane vacuum pump is used in vacuum drawers. This is subject to certain maintenance intervals, for example, the oil must be changed regularly as in the car. However, a regular maintenance cycle is not acceptable for household appliances because such conditions are difficult to convey to the targeted consumers.
  • the objective object of the present invention is therefore concerned with finding a solution that allows a maintenance-free operation of a vacuum drawer.
  • valve block and filter In addition to the effective filtering of the sucked volume flow can be dispensed with by the direct integration of the at least one filter element in the valve block to an additional component of the vacuum drawer.
  • the combination of valve block and filter also allows reducing otherwise necessary interconnections between the components, which also significantly reduces the risk of leaks within the system can be significantly reduced.
  • the valve block is indirectly or directly mounted on the vacuum chamber, ideally on the outer wall of the vacuum chamber. This results in a simplified access to the integrated filter element when an error occurs, since the vacuum chamber is usually extendible with the drawer extension element and thus is easily accessible from the outside.
  • the valve block or the filter element is integrated in the valve block such that the filter is accessible from the interior of the vacuum chamber.
  • complex maintenance work on furniture, in particular kitchen furniture are almost unacceptable.
  • kitchen furniture must be designed maintenance-free for as long as possible operation, this applies in particular to the vacuum pump used.
  • the filter in order to guarantee an effective filtration of the suction volume for this period, the filter must be regularly cleaned of deposits or exchanged, which is a tolerable measure for the consumer, since he can easily accomplish this activity even without outside specialist assistance.
  • this filter is accessible from the interior of the vacuum chamber in order to avoid costly disassembly work for the filter replacement
  • valve block which are responsible for the operation of the welding bar within the vacuum chamber.
  • the valve block thus comprises at least two valves, in particular solenoid valves, which on the one hand the suction line in control the chamber as well as actuate the connecting line of the lifting cylinder.
  • one or more ventilation openings are provided on the valve block, which allow a chamber ventilation via the suction line.
  • the built-in filter is not only suitable for filtering dusts, but also for filtering or separating liquids from the volume flow. This is especially true for the application error case, in which, for example, a liquid or soup-like food from the vacuum chamber is sucked in the direction of the vacuum pump.
  • At least one pressure sensor in particular an electronic pressure sensor, is inserted within the valve block or the suction line, the flow rate observed continuously, periodically or randomly and detects deviations from the normal operation without filter blockage.
  • corresponding means are provided which generate a corresponding service signal for indication of a necessary filter change on the basis of the sensor signal.
  • valve block provides a filter element upstream of the filter element in the suction direction, preferably a wire mesh.
  • the grid element is thus arranged between the chamber-side inlet opening of the valve block and the filter element.
  • the upstream grid element ensures an even distribution of the flow on the available filter surface, so that a satisfactory cleaning of the sucked Volume flow is achieved.
  • the grid element ensures that the filter is not thrown out of the valve block into the chamber when venting back the vacuum chamber.
  • the connecting piece of the valve block located inside the chamber sump is detachably connected to the valve block body mounted behind the chamber wall.
  • the suction line extends, starting from the valve block, through a bore provided in the chamber wall over the connecting sleeve located within the chamber sump and discharges via the nozzle opening within the chamber.
  • the connection is ideally based on a screw connection in order to simplify the usability by the user. In this case, the user can simply unscrew the connection piece from the valve block body and thereby gain access to the filter element.
  • the screw connection between the connecting piece and the valve block body lying behind the chamber wall simultaneously serves to stabilize and secure the valve block to the chamber wall.
  • the thread of the valve block body preferably extends through the bore of the chamber wall into the interior of the chamber.
  • the connection can also be made by a bayonet lock and / or by a snap hook.
  • At least one filter element is arranged within the connecting piece, preferably immediately behind the releasably arranged connection piece within the suction line.
  • the opening area of the connecting piece is preferably designed like a sieve, i.
  • the circular cover surface has one or more openings in the form of holes and covers the opening of the connecting piece or the filter placed therein permeable to air.
  • this comprises one or more spacers which ensure a certain distance between the filter element and the screw connection.
  • spacers may be formed, for example, in the form of one or more ribs, in particular radially outwardly extending ribs.
  • valve block may further include at least one spring-biased valve that blocks the suction line upon the occurrence of intolerable contaminants within the line and automatically stops the pumping operation.
  • the present invention also relates to the use of a vacuum drawer according to the present invention for furniture, in particular for kitchen furniture. Consequently, the same advantages and properties that have already been presented above with respect to the claimed vacuum drawer result for the use according to the invention. A repetitive description should be omitted for this reason.
  • the invention also relates to a kitchen furniture with a vacuum drawer according to the invention.
  • vacuum drawers for kitchen furniture are usually characterized by a particularly compact design, which comply with prescribed standard specifications with respect to the dimension.
  • the vacuum drawer is characterized in this case by a maximum height of about 140 mm, which complicates in particular the integration of the necessary components and components for Vakuumier réelle.
  • the arrangement of the valve block with integrated filter is particularly advantageous, which also result from the above-described attachment and mounting on the chamber wall enormous benefits.
  • the following embodiments of the invention relate to a vacuum drawer for a kitchen furniture.
  • the drawer is characterized by an installation height of only 140 mm and therefore corresponds to the standard size of fitted kitchens.
  • the vacuum drawer comprises a drawer extension, which is guided longitudinally displaceably in a drawer body via lateral guide rails.
  • the front cover of the drawer extension can have a handle for extending and retracting the drawer into the carcass.
  • the drawer extension may include a push-pull means for opening and closing.
  • a vacuum chamber is mounted, which is fluidically coupled with a vacuum pump of the vacuum drawer and can pump out the air from the chamber for vacuum generation.
  • the vacuum pump is attached to the drawer extension.
  • the vacuum chamber can be hermetically sealed with a lid so that the necessary vacuum can be generated within the closed vacuum chamber via the vacuum pump.
  • an inserted bag is provided within the vacuum chamber welding bar, which extends in the drawer insertion direction over the entire chamber width.
  • a bag filled with food is placed in the chamber for vacuuming, the bag being deposited on the welding bar and the bag opening protruding beyond the sealing bar towards the edge of the chamber.
  • the sealing bar After venting the vacuum chamber during operation, the sealing bar is pressed against a pressure surface and welded by supplying the welding energy.
  • corresponding lifting cylinders are provided which shift the welding bar in the vertical direction up or down.
  • a vacuum pump usually oil-lubricated rotary vane vacuum pumps are used, which require an oil change due to manufacturer's information in certain maintenance intervals.
  • the presented vacuum pump according to the invention should manage without an oil change over the entire life.
  • At least one filter element is integrated into the usually necessary valve block, which filters the sucked air from the vacuum chamber and thereby prevents contamination of the vacuum pump or the pump oil used.
  • Fig. 1 shows a representation of the rear side wall 10 of the vacuum drawer. Visible is the extending into the interior of the vacuum drawer connecting piece 20, the circular cover surface 21 includes a central through hole 23 and a plurality of annularly arranged around the through hole 23 smaller holes 22. Via the openings 22, 23 can in the vacuum chamber present air volume sucked and transported in the direction of the vacuum pump. The suction line passes through a lying behind the connecting piece 20 bore of the chamber wall 10 to Wandungsschreibseite.
  • Fig. 2 shows the corresponding back 11 of the chamber wall, in which case the valve block body 30 is mounted in the region of the bore and the performed connecting piece 20. At the rear end of the valve block 30, the connection 31 for the suction line of the vacuum pump can be seen. By screwing the connecting piece 20 with the appropriate thread of the valve block body 30, the valve block 30 may be sufficiently secured to the chamber wall 10 and stabilized under certain circumstances.
  • connection piece 20 of the vacuum container which is also in Fig. 1 was seen.
  • the connecting piece 20 is screwed via the screw thread with the matching mating thread of the connecting piece of the valve block 30.
  • the cylindrical filter element 40 can be inserted into the tubular channel 36 of the valve block 30, the connecting piece 20 is then screwed to the valve body 30 via the provided thread in the region of the channel 36.
  • the screw is additionally sealed via the O-ring 50 against the inner surface of the chamber wall 10.
  • the O-ring 51 seals the suction line with respect to the outer wall 11.
  • the valve block comprises a left and right solenoid valve 32, 33, wherein the left solenoid valve 32 is responsible for switching the lifting cylinder for the actuation of the welding bar and the right solenoid valve 33 is used for switching the volume flow from the vacuum chamber in the direction of the vacuum pump.
  • the connection 31 for the vacuum pump is also recognizable.
  • On the upper side of the valve block 30 sits a connecting piece 34, to which a hose can be fastened, which leads to a pressure sensor, wherein This pressure sensor detects the flow rate from the connecting piece 20 from the vacuum chamber to the vacuum pump and closes in case of deviations to appropriate deposits within the filter element 40.
  • the measured values of the pressure sensor can be evaluated and, if required, a corresponding service signal can be generated which indicates to the user the need for a pending filter change.
  • ventilation openings 35 can be seen, via which the vacuum chamber can be vented after completion of Vakuumiervorgang.
  • FIGS. 4 Various sectional views or detailed representations of the valve block of Fig. 3 are the FIGS. 4 refer to.
  • the sectional view of Fig. 4a is again the screw connection of the connecting piece 20 with the screw 37 of the valve block refer. By unscrewing the first screw 20, the user gets access to the filter element 40 from the interior of the vacuum chamber.
  • valve block An alternative embodiment of the valve block is the Fig. 5 refer to.
  • a flat filter 41 is used instead of a cylindrical filter element, which is also used between the screwing of the filter 20 and the screw connection of the valve block 37.
  • a detailed view of the screw of the valve block 37 is the Fig. 6 refer to. It can be seen that the surface of the screw 37 is provided with radially extending ribs 39 which are arranged in a star shape around the central bore of the screw and prevent application of the filter element 41 used on the surface of the screw 37.
  • a wire mesh 27 is arranged upstream of this. This ensures at the same time that when reversing the volume flow of the filter 41 is not pressed into the vacuum chamber.
  • a pressure sensor 34 can be used to detect filter contaminants, or, alternatively, a spring-loaded valve 50 can be used, as is the case in the exemplary embodiment of FIGS. 4 is shown.
  • the spring-biased valve 50 closes in case of contamination of the filter, the suction line to the vacuum pump to prevent damage to the vacuum pump.
  • the valve 50 thus provides a direct and mechanical protection for the vacuum pump, an additional pressure sensor can therefore be dispensed with.
  • the spring-biased valve 50 closes via the sealing seal 51, the suction line as soon as the filter clogged and the spring 52 is compressed by the vacuum.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Valves (AREA)

Description

Die Erfindung betrifft eine Vakuumschublade zum Vakuumieren von Lebensmitteln mit einer verschließbaren Vakuumkammer und wenigstens einer Vakuumpumpe, deren Saugleitung über mindestens einen Ventilblock mit der Vakuumkammer verbunden ist.The invention relates to a vacuum drawer for vacuuming food with a closable vacuum chamber and at least one vacuum pump, the suction line is connected via at least one valve block to the vacuum chamber.

Vakuumiergeräte umfassen eine Vakuumkammer, in die ein geeignetes Behältnis, beispielsweise in Form eines versiegelbaren Beutels, eingelegt wird. Innerhalb der Kammer erstreckt sich ein Schweißbalken, der in vertikaler Richtung höhenverstellbar ist. Das mit dem Lebensmittel befüllte Behältnis wird in die Vakuumkammer eingelegt, diese im Anschluss über einen Deckel luftdicht verschlossen, um mittels einer Vakuumpumpe ein Kammervakuum zu erzeugen.Vacuum sealers comprise a vacuum chamber into which a suitable container, for example in the form of a sealable bag, is inserted. Within the chamber extends a welding bar, which is vertically adjustable in the vertical direction. The filled with the food container is placed in the vacuum chamber, this hermetically sealed via a lid to produce by means of a vacuum pump, a chamber vacuum.

Der Sauganschluss der Vakuumpumpe ist über eine Saugleitung mit dem Innenraum der Vakuumkammer verbunden. Zur Steuerung der Zugangsleitung zur Vakuumkammer ist zwischengeschalteter Ventilblock vorgesehen, der den Volumenstrom zur Entlüftung aus der Vakuumkammer in Richtung der Pumpe bzw. zur Belüftung in die Vakuumkammer steuert.The suction port of the vacuum pump is connected via a suction line to the interior of the vacuum chamber. To control the access line to the vacuum chamber intermediate valve block is provided which controls the volume flow for venting from the vacuum chamber in the direction of the pump or for ventilation in the vacuum chamber.

Aus der EP 0 405 680 A2 ist ein Kühlgerät mit einer integrierten vakuumierbaren Schublade zur Lagerung von Kühlgut bekannt.From the EP 0 405 680 A2 is a cooling unit with an integrated vacuumable drawer for storing refrigerated goods known.

Die US 2009/0255221 A1 offenbart ein Vakuummiergerät zum Vakuumieren von Lebensmitteln.The US 2009/0255221 A1 discloses a vacuum sizer for vacuuming food.

Aus der EP 2 062 823 A1 ist eine Vakuumschublade für ein Küchenmöbel bekannt.From the EP 2 062 823 A1 is a vacuum drawer known for a kitchen furniture.

Die DE 299 22 199 U1 offenbart eine manuelle Frischhaltevorrichtung, die einen Klemmkörper und eine Handpumpe mit Saugleitung aufweist.The DE 299 22 199 U1 discloses a manual freshness keeping device having a clamp body and a hand pump with suction line.

Aus der US 6,148,875 A ist eine ausziehbare Vakuumkammer für ein Kühlgerät bekannt, deren Luftvolumen mittels einer Vakuumierpumpe abgesaugt werden kann.From the US 6,148,875 A is an extendable vacuum chamber for a cooling unit known, the air volume can be sucked by a Vakuumierpumpe.

Aus der US 4,164,111 ist eine weitere Vakuumverpackungsmaschine bekannt, bei der der Vakuumiervorgang über zwei getrennte Ventile steuerbar ist.From the US 4,164,111 Another vacuum packaging machine is known in which the vacuuming process is controllable via two separate valves.

Üblicherweise wird bei Vakuumschubladen eine ölgeschmierte Drehschiebervakuumpumpe eingesetzt. Diese unterliegt bestimmten Wartungsintervallen, wobei zum Beispiel das Öl wie beim Auto regelmäßig gewechselt werden muss. Ein regelmäßiger Wartungszyklus ist jedoch bei Haushaltsgeräten nicht akzeptabel, da derartige Bedingungen den angesprochenen Verbrauchern kaum zu vermitteln sind.Usually, an oil-lubricated rotary vane vacuum pump is used in vacuum drawers. This is subject to certain maintenance intervals, for example, the oil must be changed regularly as in the car. However, a regular maintenance cycle is not acceptable for household appliances because such conditions are difficult to convey to the targeted consumers.

Die objektive Aufgabe der vorliegenden Erfindung beschäftigt sich demnach mit dem Auffinden einer Lösung, die einen wartungsfreien Betrieb einer Vakuumschublade ermöglicht.The objective object of the present invention is therefore concerned with finding a solution that allows a maintenance-free operation of a vacuum drawer.

Gelöst wird diese Aufgabe durch eine Vakuumschublade mit den Merkmalen des Anspruchs 1. Vorteilhafte Ausgestaltungen der Vakuumschublade sind Gegenstand der sich an den Hauptanspruch anschließenden abhängigen Unteransprüche.This object is achieved by a vacuum drawer with the features of claim 1. Advantageous embodiments of the vacuum drawer are the subject of the subsequent dependent on the main claim dependent claims.

Gemäß Anspruch 1 wird also bei einer gattungsgemäßen Vakuumschublade vorgeschlagen, wenigstens ein Filterelement in den vorhandenen Ventilblock zu integrieren, wobei das integrierte Filterelement eine Reinigung bzw. Filterung des durch die Vakuumpumpe aus der Vakuumkammer angesaugten Volumens ermöglicht. Dadurch wird effektiv eine Verunreinigung der Pumpe bzw. des verwendeten Öls bei Einsatz einer ölgeschmierten Drehschiebervakuumpumpe vermieden.According to claim 1, it is thus proposed in a generic vacuum drawer to integrate at least one filter element in the existing valve block, wherein the integrated filter element is a cleaning or filtering of the vacuum pump from the vacuum chamber sucked volume allows. This effectively prevents contamination of the pump or of the oil used when using an oil-lubricated rotary vane vacuum pump.

Neben der effektiven Filterung des angesaugten Volumenstroms kann durch die direkte Integration des wenigstens einen Filterelementes in den Ventilblock auf eine zusätzliche Komponente der Vakuumschublade verzichtet werden. Die Kombination aus Ventilblock und Filter erlaubt zudem eine Reduzierung ansonsten notwendiger Verbindungsleitungen zwischen den Bauteilen, wodurch gleichermaßen die Gefahr für undichte Stellen innerhalb des Systems deutlich reduziert werden kann.In addition to the effective filtering of the sucked volume flow can be dispensed with by the direct integration of the at least one filter element in the valve block to an additional component of the vacuum drawer. The combination of valve block and filter also allows reducing otherwise necessary interconnections between the components, which also significantly reduces the risk of leaks within the system can be significantly reduced.

In bevorzugter Ausgestaltung der Vakuumschublade ist der Ventilblock mittelbar oder unmittelbar an der Vakuumkammer, idealerweise an der Außenwandung der Vakuumkammer montiert. Dadurch ergibt sich ein vereinfachter Zugang zum integrierten Filterelement bei Auftreten eines Fehlerfalls, da die Vakuumkammer üblicherweise mit dem Schubladenauszugselement ausziehbar ist und dadurch einfach von außen zugänglich ist.In a preferred embodiment of the vacuum drawer, the valve block is indirectly or directly mounted on the vacuum chamber, ideally on the outer wall of the vacuum chamber. This results in a simplified access to the integrated filter element when an error occurs, since the vacuum chamber is usually extendible with the drawer extension element and thus is easily accessible from the outside.

Erfindungsgemäß ist der Ventilblock bzw. das Filterelement derart in den Ventilblock integriert, dass der Filter vom Innenraum der Vakuumkammer zugänglich ist. Wie bereits vorstehend erläutert, sind aufwändige Wartungsarbeiten bei Möbelstücken, insbesondere Küchenmöbeln, nahezu inakzeptabel. Allerdings sind Küchenmöbel für einen möglichst langjährigen Betrieb wartungsfrei auszulegen, dies gilt insbesondere für die verwendete Vakuumpumpe. Um jedoch für diesen Zeitraum eine effektive Filterung des Ansaugvolumens zu garantieren, muss der Filter regelmäßig von Einlagerungen gesäubert bzw. ausgetauscht werden, was eine tolerierbare Maßnahme für den Verbraucher darstellt, da er diese Tätigkeit ganz einfach selbst ohne fremde Fachhilfe bewerkstelligen kann. Vor diesem Hintergrund ist es besonders zweckmäßig, wenn dieser Filter vom Innenraum der Vakuumkammer zugänglich ist, um aufwändige Demontagearbeiten für den Filteraustausch zu vermeidenAccording to the invention, the valve block or the filter element is integrated in the valve block such that the filter is accessible from the interior of the vacuum chamber. As explained above, complex maintenance work on furniture, in particular kitchen furniture, are almost unacceptable. However, kitchen furniture must be designed maintenance-free for as long as possible operation, this applies in particular to the vacuum pump used. However, in order to guarantee an effective filtration of the suction volume for this period, the filter must be regularly cleaned of deposits or exchanged, which is a tolerable measure for the consumer, since he can easily accomplish this activity even without outside specialist assistance. Against this background, it is particularly expedient if this filter is accessible from the interior of the vacuum chamber in order to avoid costly disassembly work for the filter replacement

Vorstellbar ist es, dass über den Ventilblock zusätzlich ein oder mehrere Hubzylinder geschaltet werden können, die für die Betätigung des Schweißbalkens innerhalb der Vakuumkammer zuständig sind. Der Ventilblock umfasst folglich mindestens zwei Ventile, insbesondere Magnetventile, die zum einen die Saugleitung in die Kammer steuern als auch die Anschlussleitung der Hubzylinder betätigen. Denkbar ist es weiterhin, dass am Ventilblock ein oder mehrere Belüftungsöffnungen vorgesehen sind, die eine Kammerbelüftung über die Saugleitung gestatten.It is conceivable that in addition one or more lifting cylinders can be switched over the valve block, which are responsible for the operation of the welding bar within the vacuum chamber. The valve block thus comprises at least two valves, in particular solenoid valves, which on the one hand the suction line in control the chamber as well as actuate the connecting line of the lifting cylinder. It is also conceivable that one or more ventilation openings are provided on the valve block, which allow a chamber ventilation via the suction line.

Idealerweise eignet sich der verbaute Filter nicht nur zur Filterung von Stäuben, sondern auch zur Filterung bzw. Abscheidung von Flüssigkeiten aus dem Volumenstrom. Dies gilt gerade für den Anwendungsfehlerfall, bei dem beispielsweise ein flüssiges bzw. suppenartiges Lebensmittel aus der Vakuumkammer in Richtung der Vakuumpumpe angesaugt wird.Ideally, the built-in filter is not only suitable for filtering dusts, but also for filtering or separating liquids from the volume flow. This is especially true for the application error case, in which, for example, a liquid or soup-like food from the vacuum chamber is sucked in the direction of the vacuum pump.

Denkbar ist der Einsatz eines Flachfilters, insbesondere einer Filtermatte bzw. einer Filtermembran als Filterelement. Denkbar ist jedoch auch ein rohr- bzw. zylinderförmiges Filterelement.It is conceivable to use a flat filter, in particular a filter mat or a filter membrane as a filter element. However, it is also conceivable a tubular or cylindrical filter element.

Um zunehmende Einlagerungen im Filter bzw. Verunreinigungen innerhalb der Saugleitung zu erkennen und der damit zunehmenden Gefahr für einen Pumpenschaden vorzubeugen, ist es vorteilhaft, wenn wenigstens ein Drucksensor, insbesondere ein elektronischer Drucksensor, innerhalb des Ventilblockes bzw. der Saugleitung eingesetzt ist, der die Durchflussmenge kontinuierlich, periodisch oder zufällig beobachtet und Abweichungen gegenüber dem Regelbetrieb ohne Filterverstopfung erkennt. In diesem Zusammenhang ist es weiter sinnvoll, wenn entsprechende Mittel vorgesehen sind, die auf Grundlage des Sensorsignals ein entsprechendes Servicesignal zur Indikation eines notwendigen Filterwechsels generieren. Dadurch kann der Nutzer gezielt auf einen anstehenden Filterwechsel aufmerksam gemacht werden.In order to detect increasing deposits in the filter or impurities within the suction line and to prevent the thus increasing risk of pump damage, it is advantageous if at least one pressure sensor, in particular an electronic pressure sensor, is inserted within the valve block or the suction line, the flow rate observed continuously, periodically or randomly and detects deviations from the normal operation without filter blockage. In this context, it makes further sense if corresponding means are provided which generate a corresponding service signal for indication of a necessary filter change on the basis of the sensor signal. As a result, the user can be made aware of an upcoming filter change.

Weiterhin kann vorgesehen sein, dass der Ventilblock ein dem Filterelement in Saugrichtung vorgeordnetes Gitterelement, vorzugsweise ein Drahtgewebe, vorsieht. Das Gitterelement ist folglich zwischen der kammerseitigen Eingangsöffnung des Ventilblocks und dem Filterelement angeordnet. Das vorgeordnete Gitterelement sorgt für eine gleichmäßige Verteilung des Durchflusses auf die zur Verfügung stehende Filterfläche, sodass eine zufriedenstellende Reinigung des angesaugten Volumenstroms erreicht wird. Daneben sorgt das Gitterelement dafür, dass der Filter beim Rückbelüften der Vakuumkammer nicht aus dem Ventilblock in die Kammer hinein geschleudert wird.Furthermore, it can be provided that the valve block provides a filter element upstream of the filter element in the suction direction, preferably a wire mesh. The grid element is thus arranged between the chamber-side inlet opening of the valve block and the filter element. The upstream grid element ensures an even distribution of the flow on the available filter surface, so that a satisfactory cleaning of the sucked Volume flow is achieved. In addition, the grid element ensures that the filter is not thrown out of the valve block into the chamber when venting back the vacuum chamber.

Besonders vorteilhaft ist es, wenn der in der Kammerwanne innen liegende Anschlussstutzen des Ventilblocks lösbar mit dem hinter der Kammerwand montierten Ventilblockkorpus verbunden ist. Die Saugleitung verläuft demnach ausgehend von dem Ventilblock durch eine in der Kammerwandung vorhandene Bohrung über den innerhalb der Kammerwanne liegenden Anschlussstutzen und mündet über die die Stutzenöffnung innerhalb der Kammer. Die Verbindung basiert idealerweise auf einer Schraubverbindung, um die Bedienbarkeit durch den Nutzer zu vereinfachen. In diesem Fall kann der Nutzer einfach den Anschlussstutzen vom Ventilblockkorpus abschrauben und dadurch Zugang zum Filterelement erhalten. Denkbar ist es ebenfalls, dass die Schraubverbindung zwischen dem Anschlussstutzen und dem hinter der Kammerwandung liegenden Ventilblockkorpus gleichzeitig zur Stabilisierung und Befestigung des Ventilblockes an der Kammerwandung dient. Das Gewinde des Ventilblockkorpus reicht vorzugsweise durch die Bohrung der Kammerwandung in den Innenraum der Kammer. Die Verbindung kann allerdings auch durch einen Bajonettverschluss und/oder durch einen Schnapphaken erfolgen.It is particularly advantageous if the connecting piece of the valve block located inside the chamber sump is detachably connected to the valve block body mounted behind the chamber wall. Accordingly, the suction line extends, starting from the valve block, through a bore provided in the chamber wall over the connecting sleeve located within the chamber sump and discharges via the nozzle opening within the chamber. The connection is ideally based on a screw connection in order to simplify the usability by the user. In this case, the user can simply unscrew the connection piece from the valve block body and thereby gain access to the filter element. It is also conceivable that the screw connection between the connecting piece and the valve block body lying behind the chamber wall simultaneously serves to stabilize and secure the valve block to the chamber wall. The thread of the valve block body preferably extends through the bore of the chamber wall into the interior of the chamber. However, the connection can also be made by a bayonet lock and / or by a snap hook.

In einer weiteren vorteilhaften Ausgestaltung ist es vorstellbar, dass wenigstens ein Filterelement innerhalb des Anschlussstutzens angeordnet ist, vorzugsweise unmittelbar hinter dem lösbar angeordneten Anschlussstutzen innerhalb der Saugleitung. Die Öffnungsfläche des Anschlussstutzens ist bevorzugt siebartig ausgeführt, d.h. die kreisförmige Deckelfläche weist ein oder mehrere Öffnungen in Form von Bohrungen auf und deckt die Öffnung des Anschlussstutzens bzw. den darin platzierten Filter luftdurchlässig ab.In a further advantageous embodiment, it is conceivable that at least one filter element is arranged within the connecting piece, preferably immediately behind the releasably arranged connection piece within the suction line. The opening area of the connecting piece is preferably designed like a sieve, i. The circular cover surface has one or more openings in the form of holes and covers the opening of the connecting piece or the filter placed therein permeable to air.

Um ein Andrücken bzw. Anpressen des Filterelements auf die Verschraubung des Ventilblockkorpus zu vermeiden, umfasst diese ein oder mehrere Abstandshalter, die für einen bestimmten Abstand zwischen Filterelement und Verschraubung sorgen. Derartige Abstandshalter können beispielsweise in Form von ein oder mehreren Rippen, insbesondere radial nach außen verlaufender Rippen, ausgebildet sein.In order to avoid pressing or pressing the filter element onto the screw connection of the valve block body, this comprises one or more spacers which ensure a certain distance between the filter element and the screw connection. Such spacers may be formed, for example, in the form of one or more ribs, in particular radially outwardly extending ribs.

Zusätzlich oder anstatt der Verwendung eines elektronischen Drucksensors kann der Ventilblock zudem wenigstens ein federvorgespanntes Ventil umfassen, das die Saugleitung beim Auftreten nicht tolerierbarer Verunreinigungen innerhalb der Leitung sperrt und den Pumpenbetrieb automatisch unterbricht.Additionally or instead of using an electronic pressure sensor, the valve block may further include at least one spring-biased valve that blocks the suction line upon the occurrence of intolerable contaminants within the line and automatically stops the pumping operation.

Die vorliegende Erfindung betrifft zudem die Verwendung einer Vakuumschublade gemäß der vorliegenden Erfindung für ein Möbel, insbesondere für ein Küchenmöbel. Für die erfindungsgemäße Verwendung ergeben sich folglich dieselben Vorteile und Eigenschaften, die bereits vorstehend bezüglich der beanspruchten Vakuumschublade vorgetragen wurden. Auf eine wiederholende Beschreibung soll aus diesem Grund verzichtet werden.The present invention also relates to the use of a vacuum drawer according to the present invention for furniture, in particular for kitchen furniture. Consequently, the same advantages and properties that have already been presented above with respect to the claimed vacuum drawer result for the use according to the invention. A repetitive description should be omitted for this reason.

Neben der erfindungsgemäßen Verwendung betrifft die Erfindung zudem ein Küchenmöbel mit einer erfindungsgemäßen Vakuumschublade. Derartige Vakuumschubladen für Küchenmöbel zeichnen sich üblicherweise durch eine besonders kompakte Bauweise aus, die vorgeschriebenen Normvorgaben bezüglich der Abmessung entsprechen. Beispielsweise kennzeichnet sich die Vakuumschublade in diesem Fall durch eine maximale Bauhöhe von ca. 140 mm, was insbesondere die Integration der notwendigen Baugruppen und Bauteile für den Vakuumierbetrieb erschwert. Gerade vor diesem Hintergrund ist die Anordnung des Ventilblocks mit integriertem Filter besonders vorteilhaft, wobei sich ebenfalls durch die vorbeschriebene Befestigung und Montage an der Kammerwandung enorme Vorteile ergeben.In addition to the use according to the invention, the invention also relates to a kitchen furniture with a vacuum drawer according to the invention. Such vacuum drawers for kitchen furniture are usually characterized by a particularly compact design, which comply with prescribed standard specifications with respect to the dimension. For example, the vacuum drawer is characterized in this case by a maximum height of about 140 mm, which complicates in particular the integration of the necessary components and components for Vakuumierbetrieb. Especially against this background, the arrangement of the valve block with integrated filter is particularly advantageous, which also result from the above-described attachment and mounting on the chamber wall enormous benefits.

Weitere Vorteile und Eigenschaften der Erfindung sollen im Folgenden anhand der in den Figuren dargestellten Ausführungsbeispiele näher erläutert werden. Es zeigen:

Fig. 1:
eine perspektivische Ansicht einer Vakuumschublade einschließlich des Innenraums der Vakuumkammer und des kammerseitigen Saugstutzen des Ventilblocks,
Fig. 2:
eine Ansicht der Vakuumschublade einschließlich der äußeren Kammerwandung mit montiertem Ventilblock,
Fig. 3:
eine Explosionsdarstellung des erfindungsgemäßen Ventilblocks gemäß einer ersten Ausführungsvariante,
Fig. 4:
unterschiedliche Darstellungen des erfindungsgemäßen Ventilblocks gemäß Fig. 3,
Fig. 5:
unterschiedliche Darstellungen des erfindungsgemäßen Ventilblocks gemäß einer alternativen Ausführungsform,
Fig. 6:
eine Detaildarstellung des Anschlussstutzens der Ausführungsform gemäß Fig. 5 und
Fig. 7:
einen Schnitt durch den Ventilblock in einer vergrößerten Darstellung.
Further advantages and features of the invention will be explained in more detail below with reference to the exemplary embodiments illustrated in the figures. Show it:
Fig. 1:
a perspective view of a vacuum drawer including the interior of the vacuum chamber and the chamber-side suction of the valve block,
Fig. 2:
a view of the vacuum drawer including the outer chamber wall with mounted valve block,
3:
an exploded view of the valve block according to the invention according to a first embodiment variant,
4:
different representations of the valve block according to the invention Fig. 3 .
Fig. 5:
different representations of the valve block according to the invention according to an alternative embodiment,
Fig. 6:
a detailed representation of the connecting piece of the embodiment according to Fig. 5 and
Fig. 7:
a section through the valve block in an enlarged view.

Die nachfolgenden erfindungsgemäßen Ausführungsvarianten betreffen eine Vakuumschublade für ein Küchenmöbel. Die Schublade zeichnet sich durch eine Einbauhöhe von nur 140 mm aus und entspricht demnach dem Normmaß von Einbauküchen. Die Vakuumschublade umfasst einen Schubladenauszug, der in einem Schubladenkorpus über seitliche Führungsschienen längsverschieblich geführt ist. Die Frontabdeckung des Schubladenauszugs kann einen Griff zum Ein- und Ausfahren der Schublade in den Korpus aufweisen. Stattdessen oder zusätzlich kann der Schubladenauszug eine Push-Pull-Einrichtung zum Öffnen und Schließen aufweisen. Innerhalb des Schubladenauszuges ist eine Vakuumkammer gelagert, die mit einer Vakuumpumpe der Vakuumschublade strömungstechnisch gekoppelt ist und zur Vakuumerzeugung die Luft aus der Kammer abpumpen kann. Die Vakuumpumpe ist am Schubladenauszug befestigt.The following embodiments of the invention relate to a vacuum drawer for a kitchen furniture. The drawer is characterized by an installation height of only 140 mm and therefore corresponds to the standard size of fitted kitchens. The vacuum drawer comprises a drawer extension, which is guided longitudinally displaceably in a drawer body via lateral guide rails. The front cover of the drawer extension can have a handle for extending and retracting the drawer into the carcass. Instead or in addition, the drawer extension may include a push-pull means for opening and closing. Within the drawer extension, a vacuum chamber is mounted, which is fluidically coupled with a vacuum pump of the vacuum drawer and can pump out the air from the chamber for vacuum generation. The vacuum pump is attached to the drawer extension.

Für den Vakuumiervorgang kann die Vakuumkammer mit einem Deckel luftdicht verschlossen werden, sodass über die Vakuumpumpe das notwendige Vakuum innerhalb der geschlossenen Vakuumkammer erzeugt werden kann.For the Vakuumiervorgang the vacuum chamber can be hermetically sealed with a lid so that the necessary vacuum can be generated within the closed vacuum chamber via the vacuum pump.

Für das Versiegeln eines eingelegten Beutels dient ein innerhalb der Vakuumkammer vorgesehener Schweißbalken, der sich in Schubladeneinschubrichtung über die gesamte Kammerbreite erstreckt. Ein mit Lebensmitteln befüllter Beutel wird zum Vakuumieren in die Kammer eingelegt, wobei der Beutel auf dem Schweißbalken abgelegt wird und die Beutelöffnung über den Schweißbalken zum Kammerrand hin übersteht.For sealing an inserted bag is provided within the vacuum chamber welding bar, which extends in the drawer insertion direction over the entire chamber width. A bag filled with food is placed in the chamber for vacuuming, the bag being deposited on the welding bar and the bag opening protruding beyond the sealing bar towards the edge of the chamber.

Nach dem Entlüften der Vakuumkammer im Betrieb wird der Schweißbalken gegen eine Andruckfläche gepresst und durch Zuführung der Schweißenergie verschweißt. Für das Anpressen des Beutels gegen die Anpressfläche sind entsprechende Hubzylinder vorgesehen, die den Schweißbalken in vertikaler Richtung nach oben bzw. unten verlagern. Als Vakuumpumpe werden üblicherweise ölgeschmierte Drehschiebervakuumpumpen eingesetzt, welche aufgrund von Herstellerangaben in bestimmten Wartungsintervallen einen Ölwechsel erfordern. Die vorgestellte erfindungsgemäße Vakuumpumpe soll jedoch ohne einen Ölwechsel über die gesamte Lebensdauer auskommen.After venting the vacuum chamber during operation, the sealing bar is pressed against a pressure surface and welded by supplying the welding energy. For pressing the bag against the contact surface corresponding lifting cylinders are provided which shift the welding bar in the vertical direction up or down. As a vacuum pump usually oil-lubricated rotary vane vacuum pumps are used, which require an oil change due to manufacturer's information in certain maintenance intervals. However, the presented vacuum pump according to the invention should manage without an oil change over the entire life.

Zu diesem Zweck ist in den üblicherweise notwendigen Ventilblock wenigstens ein Filterelement integriert, das die aus der Vakuumkammer angesaugte Luft filtert und dadurch Verunreinigungen der Vakuumpumpe bzw. des verwendeten Pumpenöls verhindert.For this purpose, at least one filter element is integrated into the usually necessary valve block, which filters the sucked air from the vacuum chamber and thereby prevents contamination of the vacuum pump or the pump oil used.

Fig. 1 zeigt eine Darstellung der hinteren Seitenwand 10 der Vakuumschublade. Erkennbar ist der in den Innenraum der Vakuumschublade hineinreichende Anschlussstutzen 20, dessen kreisrunde Deckelfläche 21 eine zentrale Durchgangsöffnung 23 und mehrere ringförmig um die Durchgangsöffnung 23 angeordnete kleinere Bohrungen 22 umfasst. Über die Öffnungen 22, 23 kann das in der Vakuumkammer vorliegende Luftvolumen angesaugt und in Richtung der Vakuumpumpe befördert werden. Die Saugleitung gelangt durch eine hinter dem Anschlussstutzen 20 liegende Bohrung der Kammerwand 10 zur Wandungsrückseite. Fig. 1 shows a representation of the rear side wall 10 of the vacuum drawer. Visible is the extending into the interior of the vacuum drawer connecting piece 20, the circular cover surface 21 includes a central through hole 23 and a plurality of annularly arranged around the through hole 23 smaller holes 22. Via the openings 22, 23 can in the vacuum chamber present air volume sucked and transported in the direction of the vacuum pump. The suction line passes through a lying behind the connecting piece 20 bore of the chamber wall 10 to Wandungsrückseite.

Fig. 2 zeigt die entsprechende Rückseite 11 der Kammerwandung, wobei hier im Bereich der Bohrung und des durchgeführten Anschlussstutzens 20 der Ventilblockkorpus 30 montiert ist. Am hinteren Ende des Ventilblocks 30 ist der Anschluss 31 für die Saugleitung der Vakuumpumpe erkennbar. Durch die Verschraubung des Anschlussstutzen 20 mit dem passenden Gewinde des Ventilblockkorpus 30 kann der Ventilblock 30 unter Umständen ausreichend an der Kammerwand 10 befestigt und stabilisiert werden. Fig. 2 shows the corresponding back 11 of the chamber wall, in which case the valve block body 30 is mounted in the region of the bore and the performed connecting piece 20. At the rear end of the valve block 30, the connection 31 for the suction line of the vacuum pump can be seen. By screwing the connecting piece 20 with the appropriate thread of the valve block body 30, the valve block 30 may be sufficiently secured to the chamber wall 10 and stabilized under certain circumstances.

Zur detaillierten Beschreibung des erfindungsgemäßen Ventilblocks 30 der Vakuumschublade wird auf die Explosionsdarstellung der Fig. 3 verwiesen. Erkennbar ist hier der Anschlussstutzen 20 des Vakuumbehälters, der ebenfalls in Fig. 1 zu sehen war. Der Anschlussstutzen 20 wird über das Schraubgewinde mit dem passenden Gegengewinde des Anschlussstutzens des Ventilblocks 30 verschraubt.For a detailed description of the inventive valve block 30 of the vacuum drawer is on the exploded view of Fig. 3 directed. Visible here is the connection piece 20 of the vacuum container, which is also in Fig. 1 was seen. The connecting piece 20 is screwed via the screw thread with the matching mating thread of the connecting piece of the valve block 30.

Das zylinderförmige Filterelement 40 lässt sich in den rohrförmigen Kanal 36 des Ventilblockes 30 einsetzen, der Anschlussstutzen 20 wird anschließend mit dem Ventilkorpus 30 über das vorgesehene Gewinde im Bereich des Kanals 36 verschraubt. Die Schraubverbindung wird zusätzlich über den O-Ring 50 gegenüber der Innenfläche der Kammerwand 10 abgedichtet. Der O-Ring 51 dichtet die Saugleitung gegenüber der äußeren Wandung 11 ab.The cylindrical filter element 40 can be inserted into the tubular channel 36 of the valve block 30, the connecting piece 20 is then screwed to the valve body 30 via the provided thread in the region of the channel 36. The screw is additionally sealed via the O-ring 50 against the inner surface of the chamber wall 10. The O-ring 51 seals the suction line with respect to the outer wall 11.

Weiterhin umfasst der Ventilbock ein linkes und rechtes Magnetventil 32, 33, wobei das linke Magnetventil 32 zur Schaltung der Hubzylinder für die Betätigung des Schweißbalkens verantwortlich ist und das rechte Magnetventil 33 für die Schaltung des Volumenstroms aus der Vakuumkammer in Richtung der Vakuumpumpe dient. Am hinteren Ende des Ventilblocks ist ebenfalls der Anschluss 31 für die Vakuumpumpe erkennbar. Auf der Oberseite des Ventilblocks 30 sitzt ein Anschlussstutzen 34, an dem ein Schlauch befestigbar ist, der zu einem Drucksensor führt, wobei dieser Drucksensor die Durchflussmenge vom Anschlussstutzen 20 aus der Vakuumkammer zur Vakuumpumpe erfasst und bei Abweichungen auf entsprechende Einlagerungen innerhalb des Filterelementes 40 schließt. Durch eine gegebenenfalls vorhandene Auswerteeinheit können die Messwerte des Drucksensors ausgewertet und bei Bedarf ein entsprechendes Servicesignal generiert werden, das dem Nutzer die Notwendigkeit eines anstehenden Filterwechsels anzeigt.Furthermore, the valve block comprises a left and right solenoid valve 32, 33, wherein the left solenoid valve 32 is responsible for switching the lifting cylinder for the actuation of the welding bar and the right solenoid valve 33 is used for switching the volume flow from the vacuum chamber in the direction of the vacuum pump. At the rear end of the valve block, the connection 31 for the vacuum pump is also recognizable. On the upper side of the valve block 30 sits a connecting piece 34, to which a hose can be fastened, which leads to a pressure sensor, wherein This pressure sensor detects the flow rate from the connecting piece 20 from the vacuum chamber to the vacuum pump and closes in case of deviations to appropriate deposits within the filter element 40. By means of an optional evaluation unit, the measured values of the pressure sensor can be evaluated and, if required, a corresponding service signal can be generated which indicates to the user the need for a pending filter change.

Weiterhin sind auf der Vorder- und Oberseite des Ventilblocks 30 Lüftungsöffnungen 35 erkennbar, über die die Vakuumkammer nach beendetem Vakuumiervorgang belüftet werden kann.Furthermore, on the front and top of the valve block 30 ventilation openings 35 can be seen, via which the vacuum chamber can be vented after completion of Vakuumiervorgang.

Diverse Schnittdarstellungen bzw. Detaildarstellungen des Ventilblocks der Fig. 3 sind den Figuren 4 zu entnehmen. Der Schnittdarstellung der Fig. 4a ist erneut die Verschraubung des Anschlussstutzens 20 mit der Verschraubung 37 des Ventilblockes zu entnehmen. Durch Abschrauben der ersten Verschraubung 20 erhält der Nutzer Zugang zum Filterelement 40 vom Innenraum der Vakuumkammer.Various sectional views or detailed representations of the valve block of Fig. 3 are the FIGS. 4 refer to. The sectional view of Fig. 4a is again the screw connection of the connecting piece 20 with the screw 37 of the valve block refer. By unscrewing the first screw 20, the user gets access to the filter element 40 from the interior of the vacuum chamber.

Ein alternatives Ausführungsbeispiel des Ventilblocks ist der Fig. 5 zu entnehmen. Hierbei wird anstatt eines zylinderförmigen Filterelementes ein Flachfilter 41 verwendet, der ebenfalls zwischen der Verschraubung des Filters 20 und der Verschraubung des Ventilblocks 37 eingesetzt wird. Eine Detailansicht der Verschraubung des Ventilblocks 37 ist der Fig. 6 zu entnehmen. Dabei ist erkennbar, dass die Oberfläche der Verschraubung 37 mit radial verlaufenden Rippen 39 versehen ist, die sternförmig um die zentrale Bohrung der Verschraubung angeordnet sind und ein Anlegen des eingesetzten Filterelementes 41 auf die Fläche der Verschraubung 37 verhindern.An alternative embodiment of the valve block is the Fig. 5 refer to. In this case, a flat filter 41 is used instead of a cylindrical filter element, which is also used between the screwing of the filter 20 and the screw connection of the valve block 37. A detailed view of the screw of the valve block 37 is the Fig. 6 refer to. It can be seen that the surface of the screw 37 is provided with radially extending ribs 39 which are arranged in a star shape around the central bore of the screw and prevent application of the filter element 41 used on the surface of the screw 37.

Um einen gleichflächigen Durchfluss über den Filterquerschnitt zu gewährleisten, wird diesem ein Drahtgitter 27 vorgeordnet. Dieses sorgt gleichzeitig dafür, dass bei Umkehrung des Volumenstroms der Filter 41 nicht in die Vakuumkammer gedrückt wird.In order to ensure a uniform flow over the filter cross-section, a wire mesh 27 is arranged upstream of this. This ensures at the same time that when reversing the volume flow of the filter 41 is not pressed into the vacuum chamber.

Für beide Varianten der Fig. 4 und 5 kann entweder ein Drucksensor 34 zur Erkennung von Filterverunreinigungen eingesetzt werden, oder alternativ auf ein federbelastetes Ventil 50 zurückgegriffen werden, wie es im Ausführungsbeispiel der Figuren 4 gezeigt ist. Das federvorgespannte Ventil 50 schließt bei Verunreinigungen des Filters die Saugleitung zur Vakuumpumpe um Beschädigung der Vakuumpumpe zu verhindern. Das Ventil 50 bietet somit einen direkten und mechanischen Schutz für die Vakuumpumpe, auf einen zusätzlichen Drucksensor kann demnach verzichtet werden.For both variants of the Fig. 4 and 5 Either a pressure sensor 34 can be used to detect filter contaminants, or, alternatively, a spring-loaded valve 50 can be used, as is the case in the exemplary embodiment of FIG FIGS. 4 is shown. The spring-biased valve 50 closes in case of contamination of the filter, the suction line to the vacuum pump to prevent damage to the vacuum pump. The valve 50 thus provides a direct and mechanical protection for the vacuum pump, an additional pressure sensor can therefore be dispensed with.

Das federvorgespannte Ventil 50 schließt über die Sperrdichtung 51 die Saugleitung, sobald der Filter verstopft und durch das Vakuum die Feder 52 zusammengedrückt wird.The spring-biased valve 50 closes via the sealing seal 51, the suction line as soon as the filter clogged and the spring 52 is compressed by the vacuum.

Claims (10)

  1. A vacuum drawer for vacuum-packing food with a closable vacuum chamber and at least one vacuum pump whose suction line is connected with the vacuum chamber by at least one valve block,
    characterized in
    that the at least one valve block (30) comprises at least one integrated filter element (40, 41) for filtering the suction line, wherein the filter (40) is accessible from the interior space of the vacuum chamber.
  2. The vacuum chamber according to any of the preceding claims, characterized in that the at least one filter element (41) is a flat filter, in particular a filter mat or a filter membrane.
  3. The vacuum chamber according to any of the preceding claims, characterized in that the valve block (30) includes at least one port for a pressure sensor (34) for measuring the flow rate in the suction line, wherein there are preferably provided means which upon exceedance of a defined flow rate generate a service signal for indicating a necessary filter change.
  4. The vacuum drawer according to any of the preceding claims, characterized in that at least one grating element (27), preferably a wire mesh, is arranged upstream of the filter element (40, 41) in suction direction, wherein the grating element (27) is seated in particular in the region of the chamber-side connecting port (20) of the valve block (30).
  5. The vacuum drawer according to any of the preceding claims, characterized in that a connecting port (20) of the valve block (30), which is located on the inside of the chamber trough, is releasably connected with the valve block body (30) located behind the chamber wall (10), ideally is screwed to a screw thread (37) of the valve block (30) and/or is connected thereto by a bayonet lock and/or by a snap hook.
  6. The vacuum drawer according to claim 5, characterized in that the at least one filter element (40, 41) is located behind the releasable connecting port (20) in the suction channel.
  7. The vacuum drawer according to claim 6, characterized in that the surface of the screw connection provided for the connecting port (20), which faces the filter element (40, 41), comprises one or more spacers, preferably in the form of ribs (39) extending radially to the outside, in order to inhibit full contact of the filter element (40, 41), in particular flat filter element, with the surface of the screw connection (37) in the suction mode.
  8. The vacuum drawer according to any of the preceding claims, characterized in that the valve block (30) comprises at least one spring-biased valve (50) which closes the suction line in the case of impurities.
  9. Use of a vacuum drawer according to any of claims 1 to 8 for a piece of furniture, in particular for a piece of kitchen furniture.
  10. Kitchen furniture with a vacuum drawer according to any of claims 1 to 8.
EP15174969.4A 2014-07-16 2015-07-02 Vacuum drawer for vacuum packing food Active EP2974969B1 (en)

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DE102015013444A1 (en) 2015-10-15 2017-04-20 Michatek K.S. Vacuum drawer for vacuuming food
CN107640354A (en) * 2016-07-22 2018-01-30 天水众兴菌业科技股份有限公司 A kind of batch production asparagus production packing device
NL2017883B1 (en) 2016-11-29 2018-06-11 Quva Kitchen Products B V Countertop vacuum system

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IT1067343B (en) * 1976-11-19 1985-03-16 Bernardo P Di METHOD AND DEVICE FOR THE VACUUM PACKAGING OF PRODUCTS
IT1230958B (en) * 1989-06-30 1991-11-08 Eurodomestici Ind Riunite REFRIGERATOR, FREEZER OR SIMILAR WITH REMOVABLE CONTAINER IN WHICH VACUUM IS MADE.
US6148875A (en) * 1997-06-18 2000-11-21 Breen; James Vacuum food storage system
DE29922199U1 (en) * 1999-12-17 2000-06-08 Minninger Oliver Freshness-keeping device
ITVR20070080A1 (en) * 2007-06-06 2008-12-07 Marziano Salvaro EQUIPMENT FOR VACUUM COOKING FOR HOUSEHOLD USE
EP2062823A1 (en) * 2007-11-23 2009-05-27 Filippi S.r.l. Domestic vacuum packaging module
US20090255221A1 (en) * 2008-04-14 2009-10-15 Lyman Jr Hugh Marion Suspended Vacuum Sealer Appliance

Also Published As

Publication number Publication date
EP2974969A1 (en) 2016-01-20
DE102014010569B4 (en) 2021-02-25
ES2624233T3 (en) 2017-07-13
DE102014010569A1 (en) 2016-01-21

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