EP0992751B1 - Refrigerator or freezer with drawers - Google Patents

Refrigerator or freezer with drawers Download PDF

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Publication number
EP0992751B1
EP0992751B1 EP99111661A EP99111661A EP0992751B1 EP 0992751 B1 EP0992751 B1 EP 0992751B1 EP 99111661 A EP99111661 A EP 99111661A EP 99111661 A EP99111661 A EP 99111661A EP 0992751 B1 EP0992751 B1 EP 0992751B1
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EP
European Patent Office
Prior art keywords
freezer
drawer
drawers
refrigerator
layer
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
EP99111661A
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German (de)
French (fr)
Other versions
EP0992751A3 (en
EP0992751A2 (en
Inventor
Eugen Sättele
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.)
Liebherr Hausgeraete Ochsenhausen GmbH
Original Assignee
Liebherr Hausgeraete Ochsenhausen GmbH
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Publication of EP0992751A3 publication Critical patent/EP0992751A3/en
Application granted granted Critical
Publication of EP0992751B1 publication Critical patent/EP0992751B1/en
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Classifications

    • 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
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F25D25/024—Slidable shelves
    • F25D25/025—Drawers

Definitions

  • the invention relates to a refrigerator or freezer with at least one drawer consisting of a plastic shell with a bottom, a rear wall, one Front wall and two side walls.
  • the object of the invention is therefore a drawer for refrigerators or freezers to hand, which in addition to better torsional rigidity has better insulation at the same time.
  • this object is achieved by the features of claim 1. So here by designing the front wall of the drawer in the form of a Multilayer profile or hollow chamber profile, the rigidity can be increased significantly, without the floor and all walls being dimensioned more strongly have to.
  • the upper peripheral edge which is the usual Drawers are designed as a collar, in the form of a multi-layer profile or hollow chamber profile is formed. This already increases the overall rigidity of the Drawer significantly improved without the use of materials and weight Production of the drawer to increase significantly.
  • a corresponding design of the front wall in a drawer for one Fridge at least brings about the improvement in torsional stiffness, though the additional effect of better insulation also plays a subordinate role there plays.
  • the second layer can advantageously be a Multi-layer structure can be formed from styrofoam.
  • the front wall also be designed as a hollow chamber profile, on the one hand by the Hollow chamber cross section stiffening and on the other hand by the Inclusion of air in the hollow chamber a very good thermal insulation is achieved.
  • FIG. 1 shows the freezer section of a fridge / freezer combination 10.
  • drawers 12 and 14 are inserted into corresponding recesses.
  • the freezer is from a laterally pivoted door 16 of the Accessible from the front.
  • the drawers 12 and 14 are injection molded plastic parts. These here drawers 12 and 14 have only a small amount due to the comparatively thin walls Torsional stiffness.
  • in the area of the front wall 18 or 18 'of the drawers 14 and 12 determine a tendency to freeze. This is related to the fact that the door 16 is usually less insulated than that other side surfaces of the freezer compartment.
  • by opening the door 16 and any leaks in the device keep warm air in this area Front wall 18 and 18 'of the drawers 14 and 12 out. Because the drawer front is very cold, the observed icing occurs here.
  • FIG. 4 an embodiment of the invention is shown in the case of a drawer 12 the front wall 18 'is designed as a multilayer profile 20.
  • the drawer is the embodiment in a first method step their floor, their rear wall and their two side walls in the usual Wall thickness has been produced as a plastic injection molded part.
  • the front is foamed in a two-component process known per se and molded onto the remaining parts of the drawer 12.
  • the foamed Two-layer profile 20 gives the entire drawer greater strength.
  • it guarantees that the front is insulated from the freezer compartment door 16.
  • Appropriate trained drawers lead to a smaller one Icing, which could be proven by appropriate tests.
  • the front wall 18 'shown here can also be a hollow chamber profile, which is sprayed by an internal gas pressure such as as such is also known to be formed.
  • an internal gas pressure such as as such is also known to be formed.
  • styrofoam insulation is provided as the second layer.
  • a sectional detail of a drawer side wall 22 is shown, in which a stiffening edge 24 formed as a hollow chamber profile runs all the way round is provided.
  • the torsional stiffness of the Drawer significantly improved without much more material to manufacture the drawer is used.
  • a peripheral edge 24 can also be formed as a plastic multilayer profile become.
  • the two-component process is again suitable for production.

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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)
  • Refrigerator Housings (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

Die Erfindung betrifft einen Kühl- oder Gefrierschrank mit mindestens einer Schublade bestehend aus einer Kunststoffschale mit einem Boden, einer Hinterwand, einer Vorderwand und zwei Seitenwänden.The invention relates to a refrigerator or freezer with at least one drawer consisting of a plastic shell with a bottom, a rear wall, one Front wall and two side walls.

Diese bekannten Schubladen bestehen in der Regel aus einem vergleichsweise dünnen gespritzten Kunststoff. Diese bekannten Schubladen weisen eine vergleichsweise geringe Stabilität auf. Insbesondere im beladenen Zustand erweisen sich diese Schubladen als wenig verwindungsfest. Zwar könnte eine höhere Verwindungssteifigkeit dadurch erreicht werden, daß die Wandstärken dicker gewählt werden. Hierdurch ist aber ein höherer Materialverbrauch bedingt und die Schubladen werden insgesamt schwerer und dadurch unhandlicher.These known drawers usually consist of a comparatively thin molded plastic. These known drawers have a comparative low stability. Prove especially when loaded these drawers are not very resistant to torsion. Although a higher torsional stiffness could can be achieved by making the wall thicknesses thicker become. However, this results in higher material consumption and the drawers overall become heavier and therefore more bulky.

Aus der DE195 18 153 A1 ist eine Schublade bekannt, in der die Seitenwände als mittels eines Gasinnendruckspritzens hergestellten Hohlkammerprofil ausgebildet sind.From DE195 18 153 A1 a drawer is known in which the side walls as formed by means of a gas injection molding hollow chamber profile are.

Aufgabe der Erfindung ist es daher, eine Schublade für Kühl- oder Gefrierschränke an die Hand zu geben, die neben einer besseren Verwindungssteifigkeit auch gleichzeitig eine bessere Isolation aufweist. The object of the invention is therefore a drawer for refrigerators or freezers to hand, which in addition to better torsional rigidity has better insulation at the same time.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 gelöst. Hier kann also durch die Ausbildung der Vorderwand der Schublade in Form eines Mehrschichtprofils bzw. Hohlkammerprofils die Steifigkeit wesentlich erhöht werden, ohne daß jetzt der Boden und sämtliche Wände stärker dimensioniert werden müssen.According to the invention, this object is achieved by the features of claim 1. So here by designing the front wall of the drawer in the form of a Multilayer profile or hollow chamber profile, the rigidity can be increased significantly, without the floor and all walls being dimensioned more strongly have to.

Besonders vorteilhaft ist es, wenn der obere umlaufende Rand, der bei üblichen Schubladen als Kragen ausgebildet ist, in Form eines Mehrschichtprofils oder Hohlkammerprofils geformt wird. Bereits hierdurch wird die Gesamtsteifigkeit der Schublade erheblich verbessert, ohne den Materialeinsatz und das Gewicht zur Herstellung der Schublade im nennenswerten Maße zu steigern.It is particularly advantageous if the upper peripheral edge, which is the usual Drawers are designed as a collar, in the form of a multi-layer profile or hollow chamber profile is formed. This already increases the overall rigidity of the Drawer significantly improved without the use of materials and weight Production of the drawer to increase significantly.

Eine besondere Problematik ergibt sich bei den Schubladen für Gefrierschränke. Aufgrund der häufigeren Türöffnungen bzw. von Leckagen im Türbereich tendieren gerade die Vorderfronten von Gefrierschrankschubladen dazu zu vereisen.The drawers for freezers pose a particular problem. Due to the more frequent door openings or leakage in the door area tend to freeze just the front fronts of freezer drawers.

Dieses Problem wird durch die Erfindung behoben. Nach dieser wird die gesamte Vorderwand der Schublade, also die Wand, die zur Tür des Gefrierschrankes hin weist, in einem Mehrschichtaufbau bzw. als Hohlkammer ausgeführt. Dies führt nicht nur zu einer Versteifung und somit einer Verbesserung der Verwindungssteifigkeit der gesamten Schublade, sondern gleichzeitig zu einer besseren Isolation des Vorderfrontbereichs des Gefrierschrankes gegenüber dem Gefrierschrankinnenraum.This problem is solved by the invention. After this, the whole Front wall of the drawer, i.e. the wall that faces the door of the freezer points, executed in a multilayer structure or as a hollow chamber. this leads to not only to stiffen and thus improve torsional stiffness the entire drawer, but at the same time for better insulation the front of the freezer opposite the freezer interior.

Eine entsprechende Ausbildung der Vorderwand bei einer Schublade für einen Kühlschrank bringt zumindest die Verbesserung der Verwindungssteifigkeit, wenn auch der zusätzliche Effekt der besseren Isolation dort eine untergeordnete Rolle spielt.A corresponding design of the front wall in a drawer for one Fridge at least brings about the improvement in torsional stiffness, though the additional effect of better insulation also plays a subordinate role there plays.

Zur besseren Isolierung der Vorderwand kann vorteilhaft die zweite Schicht eines Mehrschichtenaufbaus aus Styropor gebildet sein. Alternativ hierzu kann die Vorderwand auch als Hohlkammerprofil ausgeführt sein, wobei einerseits durch den Hohlkammerquerschnitt eine Versteifung erfolgt und andererseits durch den Lufteinschluß in der Hohlkammer eine sehr gute thermische Isolation erreicht wird.For better insulation of the front wall, the second layer can advantageously be a Multi-layer structure can be formed from styrofoam. Alternatively, the front wall also be designed as a hollow chamber profile, on the one hand by the Hollow chamber cross section stiffening and on the other hand by the Inclusion of air in the hollow chamber a very good thermal insulation is achieved.

Weitere Einzelheiten und Vorteile der Erfindung werden anhand eines in der Zeichnung dargestellten Ausführungsbeispiels erläutert. Es zeigen:

Fig. 1:
Den Gefrierbereich einer Kühlschrank-Gefrierkombination mit eingeschobenen Schubladen nach dem Stand der Technik,
Fig. 2:
einen teilweisen Schnitt durch eine Schublade nach einer ersten Ausführungsform der vorliegenden Erfindung,
Fig. 3:
eine Draufsicht auf die Ausführungsform gemäß Fig. 2 und
Fig. 4:
eine zweite erfindungsgemäße Ausführungsform der vorliegenden Erfindung.
Further details and advantages of the invention will be explained with reference to an embodiment shown in the drawing. Show it:
Fig. 1:
The freezer area of a fridge-freezer combination with inserted drawers according to the prior art,
Fig. 2:
2 shows a partial section through a drawer according to a first embodiment of the present invention,
Fig. 3:
a plan view of the embodiment of FIG. 2 and
Fig. 4:
a second embodiment of the present invention.

In Fig. 1 ist der Gefrierteil einer Kühl-/Gefrierkombination 10 dargestellt. In diesem Gefrierteil sind in entsprechende Ausnehmungen Schubladen 12 und 14 eingeschoben. Das Gefrierteil ist über eine seitlich schwenkbar gelagerte Tür 16 von der Frontseite her zugänglich. Die Schubladen 12 und 14 sind Kunststoffspritzgußteile. Diese hier entsprechend dem Stand der Technik ausgebildeten Schubladen 12 und 14 weisen aufgrund der vergleichsweise dünnen Wandungen eine nur geringe Verwindungssteifigkeit auf. Darüber hinaus ist im Bereich der Vorderwand 18 bzw. 18' der Schubladen 14 bzw. 12 eine Tendenz zur Vereisung festzustellen. Dies hängt damit zusammen, daß in der Regel die Tür 16 weniger stark isoliert ist als die sonstigen Seitenflächen des Gefrierteils. Weiterhin wird durch die Öffnung der Tür 16 und eventuelle Leckagen im Gerät immer wieder Warmluft in diesen Bereich der Vorderwand 18 bzw. 18' der Schubladen 14 und 12 geführt. Da die Schubladenfront sehr kalt ist, kommt es hier zu den beobachteten Vereisungen. 1 shows the freezer section of a fridge / freezer combination 10. In this Freezer compartment drawers 12 and 14 are inserted into corresponding recesses. The freezer is from a laterally pivoted door 16 of the Accessible from the front. The drawers 12 and 14 are injection molded plastic parts. These here drawers 12 and 14 have only a small amount due to the comparatively thin walls Torsional stiffness. In addition, in the area of the front wall 18 or 18 'of the drawers 14 and 12 determine a tendency to freeze. This is related to the fact that the door 16 is usually less insulated than that other side surfaces of the freezer compartment. Furthermore, by opening the door 16 and any leaks in the device keep warm air in this area Front wall 18 and 18 'of the drawers 14 and 12 out. Because the drawer front is very cold, the observed icing occurs here.

In Fig. 4 ist eine Ausführungsform der Erfindung gezeigt, bei der bei einer Schublade 12 die Vorderwand 18' als Mehrschichtprofil 20 ausgebildet ist. Im hier dargestellten Ausführungsbeispiel ist in einem ersten Verfahrensschritt die Schublade mit ihrem Boden, ihrer Hinterwand und ihren beiden Seitenwänden in der üblichen Wandstärke als Kunststoffspritzgußteil hergestellt worden. In einem zweiten Schritt ist die Vorderfront in einem an sich bekannten Zweikomponentenverfahren ausgeschäumt und an die restlichen Teile der Schublade 12 angeformt worden. Das ausgeschäumte Zweischichtprofil 20 verleiht der gesamten Schublade eine höhere Festigkeit. Andererseits garantiert sie die Isolation der Vorderfront gegenüber der Gefrierteiltür 16. Entsprechend ausgebildete Schubladen führen zu einer geringeren Vereisung, was durch entsprechende Versuche bewiesen werden konnte.In Fig. 4 an embodiment of the invention is shown in the case of a drawer 12 the front wall 18 'is designed as a multilayer profile 20. Im shown here The drawer is the embodiment in a first method step their floor, their rear wall and their two side walls in the usual Wall thickness has been produced as a plastic injection molded part. In a second step the front is foamed in a two-component process known per se and molded onto the remaining parts of the drawer 12. The foamed Two-layer profile 20 gives the entire drawer greater strength. On the other hand, it guarantees that the front is insulated from the freezer compartment door 16. Appropriate trained drawers lead to a smaller one Icing, which could be proven by appropriate tests.

Alternativ zu der hier dargestellten Zweischichtprofilausbildung der Vorderwand 18' kann hier auch ein Hohlkammerprofil, das durch ein Gasinnendruckspritzen, wie es als solches auch bekannt ist, gebildet werden. Eine weitere Alternative besteht darin, daß als zweite Schicht eine Styroporisolation vorgesehen wird.As an alternative to the two-layer profile configuration of the front wall 18 'shown here can also be a hollow chamber profile, which is sprayed by an internal gas pressure such as as such is also known to be formed. Another alternative is there in that styrofoam insulation is provided as the second layer.

In den Fig. 2 und 3 ist ein Schnittdetail einer Schubladenseitenwand 22 dargestellt, bei dem ein als Hohlkammerprofil ausgebildeter Versteifungsrand 24 umlaufend vorgesehen ist. Durch dieses Versteifungsprofil wird die Verwindungssteifigkeit der Schublade erheblich verbessert, ohne daß wesentlich mehr Material zur Herstellung der Schublade verwendet wird. Statt des hier dargestellten Hohlkammerprofils kann auch ein umlaufender Rand 24 als Kunststoffmehrschichtprofil ausgebildet werden. Hier eignet sich zur Herstellung beispielsweise wiederum das Zweikomponentenverfahren.2 and 3, a sectional detail of a drawer side wall 22 is shown, in which a stiffening edge 24 formed as a hollow chamber profile runs all the way round is provided. The torsional stiffness of the Drawer significantly improved without much more material to manufacture the drawer is used. Instead of the hollow chamber profile shown here A peripheral edge 24 can also be formed as a plastic multilayer profile become. Here, for example, the two-component process is again suitable for production.

Claims (4)

  1. Refrigerator or freezer (10) with at least one drawer (12, 14) comprising a plastic shell with a base, a rear wall, a front wall (18, 1.8') and two side walls (22), characterized in that the entire front wall (18, 18') is designed as a multi-layer or hollow-chamber profile (24).
  2. Refrigerator or freezer (10) according to Claim 1, characterized in that the top peripheral border (24) of the drawer (12, 14) is designed as a multi-layer or hollow-chamber profile.
  3. Refrigerator or freezer (10) according to Claim 1 or 2, characterized in that, in addition to the plastic wall, the front wall (18, 18') has, as a second layer, a Styropor layer.
  4. Refrigerator or freezer (10) according to one of Claims 1 to 3, characterized in that the side walls and/or the rear wall are designed, at least in part, as a multi-layer or hollow-chamber profile.
EP99111661A 1998-09-30 1999-06-16 Refrigerator or freezer with drawers Expired - Lifetime EP0992751B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29817497U 1998-09-30
DE29817497U DE29817497U1 (en) 1998-09-30 1998-09-30 Drawers for refrigerators or freezers

Publications (3)

Publication Number Publication Date
EP0992751A2 EP0992751A2 (en) 2000-04-12
EP0992751A3 EP0992751A3 (en) 2001-01-31
EP0992751B1 true EP0992751B1 (en) 2003-08-20

Family

ID=8063315

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Application Number Title Priority Date Filing Date
EP99111661A Expired - Lifetime EP0992751B1 (en) 1998-09-30 1999-06-16 Refrigerator or freezer with drawers

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EP (1) EP0992751B1 (en)
DE (2) DE29817497U1 (en)
ES (1) ES2207074T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1130348B1 (en) 2000-02-29 2005-06-15 Liebherr-Hausgeräte Ochsenhausen GmbH Drawer for refrigerator or freezer cabinet
DE20005696U1 (en) * 2000-02-29 2001-07-12 Liebherr Hausgeraete Drawer for refrigerators or freezers
CN102213529B (en) * 2011-06-03 2017-03-01 海尔集团公司 Refrigerator chamber structure and there is its refrigerator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998034077A1 (en) * 1997-02-03 1998-08-06 Arçelik A.S. Refrigerator door with an advanced insulation and re-cycling performance

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1091344A (en) * 1965-02-02 1967-11-15 Roanoid Plastics Ltd Container
US3282635A (en) * 1965-07-23 1966-11-01 H J Scheirich Company Hollow-wall drawer
DE6800639U (en) * 1968-10-03 1969-02-20 Elges A & Co PLASTIC DRAWER
GB1501467A (en) * 1974-04-04 1978-02-15 Viscount Plastic Prod Pty Ltd Blank for a drawer
EP0081279A1 (en) * 1981-08-10 1983-06-15 Aladdin Industries, Incorporated Plastic food container of double wall construction
US4732430A (en) * 1987-02-26 1988-03-22 Byrns James E Blow molded drawer front
GB2265706A (en) * 1992-04-01 1993-10-06 Styropack Insulated containers
DE19518153B4 (en) * 1995-05-17 2006-04-06 Ninkaplast Gmbh Method for producing a drawer
GB2326469A (en) * 1997-06-21 1998-12-23 Hotpoint Ltd Storage containers for use in refrigerators

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998034077A1 (en) * 1997-02-03 1998-08-06 Arçelik A.S. Refrigerator door with an advanced insulation and re-cycling performance

Also Published As

Publication number Publication date
DE59906654D1 (en) 2003-09-25
ES2207074T3 (en) 2004-05-16
DE29817497U1 (en) 1999-02-18
EP0992751A3 (en) 2001-01-31
EP0992751A2 (en) 2000-04-12

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