EP2158436B1 - Heat-insulating door for a built-in refrigerating device - Google Patents

Heat-insulating door for a built-in refrigerating device Download PDF

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Publication number
EP2158436B1
EP2158436B1 EP08761253A EP08761253A EP2158436B1 EP 2158436 B1 EP2158436 B1 EP 2158436B1 EP 08761253 A EP08761253 A EP 08761253A EP 08761253 A EP08761253 A EP 08761253A EP 2158436 B1 EP2158436 B1 EP 2158436B1
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EP
European Patent Office
Prior art keywords
wall
thermally insulating
insulating door
door
profile elements
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.)
Active
Application number
EP08761253A
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German (de)
French (fr)
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EP2158436A2 (en
Inventor
Helmut Hanke
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.)
BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP2158436A2 publication Critical patent/EP2158436A2/en
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Publication of EP2158436B1 publication Critical patent/EP2158436B1/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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/028—Details
    • 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • 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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
    • E05Y2900/31—Application of doors, windows, wings or fittings thereof for domestic appliances for refrigerators
    • 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
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/02—Details of doors or covers not otherwise covered
    • F25D2323/024—Door hinges

Definitions

  • the invention relates to a heat insulating door for a built-in refrigeration appliance, in particular a household refrigerating appliance, according to the preamble of claim 1, z. B. a door of a refrigerator or freezer.
  • Doors of household refrigerators usually have a solid outer wall formed of sheet metal and a plastic inner deep drawn wall, which are interconnected at their edges to define a cavity. This cavity is filled with a foam material to form an insulating layer.
  • This structure is quite simple, yet high demands are placed on the doors, resulting from the field of application and the competition.
  • the heat-insulating doors which are used in refrigerators, must have a certain stability, since they must be suitable for carrying an often considerable weight, because on the refrigerator door often fitted to the inner wall door racks are attached, which is the storage of small parts or bottles allow the inside of the door.
  • Vacuum insulation panels whose walls are profiled to improve the resistance to the external atmospheric pressure are, for example GB 730 699 A .
  • GB 715 174 A and GB 730 146A known.
  • Inner and outer wall of the panels are welded at their edges to form laterally projecting webs. These bars prevent the direct use of the panels as the door of a refrigerator.
  • Household appliances using heat-insulating walls are under enormous price pressure.
  • the devices and thus their components must therefore always be cheaper both in material costs and assembly. Consequently, one strives to keep the proportion of material as low as possible. Therefore, as thin as possible sheets are used for the outer walls.
  • these relatively unstable walls are provided with stiffening rails extending along or around the walls particularly neuralgic areas, such as the attachment regions of subjects or recordings extend provided.
  • these rails must be integrated into the wall or housing wall structure and fixed there, which in turn means an effort that one would like to avoid.
  • a heat-insulating door for a refrigerator of the type described above, having the features of the preamble of claim 1, is made of US-A-6 138 432 known.
  • the invention has for its object to provide a heat insulating door for a built-in refrigeration appliance, in particular household refrigeration appliance, which has sufficient rigidity with the least possible use of materials.
  • an outer wall of the heat-insulating door is profiled at least in regions.
  • a sufficient stability of the heat-insulating door can be achieved without the need for additional stiffening elements, such as stiffening rails.
  • Due to the profiling, extremely thin, material-saving outer walls can be used, which nevertheless are able to build a rigid door which is suitable to serve as a support for the carriers ofmégutablagen, such as shelves or door shelves.
  • the entire wall can take over the functionality of a load-bearing wall, it is also stable enough to attach chilled goods to her, although it can be worked with an extremely thin wall thickness. Since the edge regions of the wall surface are not profiled, connections of the walls with each other or with other components of the heat-insulating door, in particular with a closing bar bordering the cavity of the door at the top or bottom, can be produced in a simple manner on this smooth surface.
  • metal sheets of the heat-insulating door are at least partially profiled.
  • the surface of the outside wall of the refrigerator door is made of metal, steel or stainless steel. These metal sheets are particularly suitable for the application of surface profiles.
  • the profiling can be realized in the context of the manufacturing process of the sheets particularly advantageous by means of profile rolling.
  • a profiling of the outer wall has the additional advantage that the refrigerator can thereby be added to an individual note in terms of aesthetic considerations.
  • elongated profiles are used which extend over the height of the door.
  • the heat-insulating door in particular in the direction of gravity, which is the main direction of action of the forces caused by the refrigerated goods trays fastened to the door, has an increased inherent rigidity.
  • the profiled wall is designed as a trapezoidal or rectangular wall. That is, the profile causes at least partially a flat pattern on the wall, which is similar in cross-section of the wall of a canted line, which consists of juxtaposed trapezoidal or rectangular elements.
  • the trapezoidal design of the profiling gives the wall a particularly high rigidity.
  • the profiling takes place in the form of waves, so that the profiled wall in cross section shows a wavy line, ie a curved line.
  • This form of profiling results in a somewhat less stable wall than the profiling with angular lines, but the wall is easier to clean because a shaft surface has no edges but is relatively smooth.
  • FIGS. 1 to 6 each provided with the same reference numerals.
  • Fig. 1 shows a section through a refrigerator door 1 of the prior art, which has a formed by thermoforming plastic inner wall 2, a heat insulating layer 3 and an outer wall 4 connected to the inner wall 2 to a door body.
  • the outer wall 4 formed of sheet steel is connected to the inner wall 2 by the wetting effect of the foaming of polyethane, in which bounded by the inner wall 2 and the outer wall 4 space, insulating layer 3 to form a dimensionally stable structure.
  • stiffening rails 5a, 5b, 5c and 5d are formed, which give the refrigerator door 1 sufficient stability, although both the plastic inner wall 2 and the steel outer wall 4 are extremely thin and material-saving design.
  • This known structure is the basis of the invention.
  • refrigerator door 1 in particular refrigerator door 1, is also constructed of a plastic inner wall 2, an outer door panel 4 formed of sheet metal and a Schaumisolier für 3 introduced between them.
  • stiffening elements 5a to d are omitted, since the door outer wall has 4 profiles 6, which give the refrigerator door 1 the required inherent rigidity.
  • the profiling of the outer wall 4 can be produced for example in the context of the manufacturing process by profiling rolls, which the Press rectangular profiles into the steel sheet of the outer wall 4.
  • the profiles 6 run as on the Fig. 3 can be seen over the entire length of the outer wall 4 of the refrigerator door 1.
  • This extended course of the elongated rectangular profiles 6 results in a profile element 7, which comprises the entire outer wall 4 of the refrigerator door 1.
  • the outer wall 4 and thus the entire refrigerator door 1 in the direction of gravity is imparted by the wall thickness of the outer wall 4 alone conditional, significantly exceeding rigidity and stability, which ensures that attached to the door inner wall 2, not showndegutablagen can be, without the refrigerator door 1 is thereby overloaded.
  • Fig. 4 shows a fragmentary view of a lower corner of a refrigerator door 1 according to a preferred development of the invention.
  • the an inner cavity 8 of the door filling foam material is in Fig. 4 omitted to better show details of inner and outer walls 2 and 4 respectively.
  • a plurality of profile elements 6 in the form of vertically elongated ribs is formed with round-arched cross-section. The ribs 6 follow each other at a uniform distance without gaps and fill the front of the door substantially over its entire width, from a lateral edge 9 to the opposite edge, not shown substantially completely.
  • edges 9 subsequent lateral flanks 10, which are also integrally formed from the sheet of the outer wall 4, are free of profile elements 6; in the region of the lateral flanks 10, the outer wall is inherently stiffened by the presence of the flanks 10 delimiting edges 9, 11.
  • the edge 11 is adjoined by an edge strip 12 which is essentially parallel to the front side of the outer wall 4 and to which the inner wall 2 is attached in a foam-tight manner, for example by gluing.
  • the profile elements 6 extend over substantially the entire height of the outer wall 4 with the exception of edge strips 13 at its upper or lower edge. These edge strips 13 are left flat to ensure a foam-tight engagement of the outer wall 4 in a groove 14 of a lower end strip 15, which, connected to inner and outer walls 2 and 4, the interior 8 closes down.
  • One of the lower end strip 15 mirror image, not shown upper end bar closes the interior 8 at its upper end.
  • two screw holes 16 are formed in the lower edge strip 13 and the upper edge strip.
  • the outer wall 4 in the vicinity of the screw holes 16 foam side stiffened by a backing member 17, in which a screw thread of a screwed from the outside, not shown screw stops.
  • the backing member 17 on the outside opposite a spacer plate 18, also with screw holes whose thickness is slightly larger than a projection of the lower end strip 15 on the front of the outer wall 4.
  • a horizontal leg 20 of the fitting part 19 extends at a small distance along the underside of the end strip 15th
  • the fitting 19 is part of a hinge for the pivotal suspension of the door 1.
  • Fig. 5 This fact is indicated by a pivot pin 21 extending vertically downwards from the horizontal leg 20 and engaging a bearing, not shown, on the body of the refrigerator.
  • the fitting part 19 can also be combined with any other hinge constructions in order to obtain a pivotable suspension of the door 1.
  • Fig. 6 shows a horizontal partial section through a refrigerator door according to another embodiment of the invention. While the design of the 4 and 5 , Especially because of the attachment of the fitting part 19 on the door front is predestined for a built-in refrigerator, in which the outer wall 4 is hidden behind a furniture panel, the embodiment of Fig. 6 especially intended for a refrigerator with a freely visible door.
  • the outer wall 4 is here laminated with a film 22 which is stiff in itself and just above the ribs 6 pulls away.
  • FIGS. 1 to 6 The functional constructions of the embodiments according to the FIGS. 1 to 6 can of course be transferred to any heat-insulating walls or wall parts of a household refrigerating appliance in an advantageous manner.
  • a wall constructed in this way can also be provided as a rear wall and / or side wall of a household refrigerating appliance.
  • this is not part of the present invention

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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)
  • Thermal Insulation (AREA)

Description

Die Erfindung betrifft eine Wärme isolierende Tür für ein Einbaukältegerät, insbesondere ein Haushalts-Kältegerät, nach dem Oberbegriff von Anspruch 1, z. B. eine Tür eines Kühloder Gefrierschrankes .The invention relates to a heat insulating door for a built-in refrigeration appliance, in particular a household refrigerating appliance, according to the preamble of claim 1, z. B. a door of a refrigerator or freezer.

Türen von Haushalts-Kältegeräten haben üblicherweise eine aus Blech geformte feste Außenwand und eine aus Kunststoff tiefgezogene Innenwand, welche an ihren Rändern miteinander verbunden sind, um einen Hohlraum zu begrenzen. Dieser Hohlraum wird mit einem Schaumstoffmaterial ausgefüllt, um eine Isolationsschicht zu bilden. Dieser Aufbau ist recht einfach, dennoch werden an die Türen hohe Anforderungen gestellt, die sich aus dem Einsatzbereich und dem Wettbewerb ergeben.Doors of household refrigerators usually have a solid outer wall formed of sheet metal and a plastic inner deep drawn wall, which are interconnected at their edges to define a cavity. This cavity is filled with a foam material to form an insulating layer. This structure is quite simple, yet high demands are placed on the doors, resulting from the field of application and the competition.

Die Wärme isolierenden Türen, welche in Kältegeräten Verwendung finden, müssen eine gewisse Stabilität aufweisen, da sie zum Tragen eines oftmals beträchtlichen Gewichtes geeignet sein müssen, denn an der Kältegerätetür werden häufig an die Innenwand angepasste Türabstellerelemente angebracht, welche das Lagern von Kleinteilen oder Flaschen an der Innenseite der Tür erlauben.The heat-insulating doors, which are used in refrigerators, must have a certain stability, since they must be suitable for carrying an often considerable weight, because on the refrigerator door often fitted to the inner wall door racks are attached, which is the storage of small parts or bottles allow the inside of the door.

Vakuumisolationspaneele, deren Wände zur Verbesserung der Beständigkeit gegen den von außen einwirkenden Atmosphärendruck profiliert sind, sind z.B. aus GB 730 699 A , GB 715 174 A und GB 730 146A bekannt. Innen- und Außenwand der Paneele sind an ihren Rändern unter Ausbildung von seitlich abstehenden Stegen verschweißt. Diese Stege verhindern die direkte Nutzung der Paneele als Tür eines Kältegeräts.Vacuum insulation panels, whose walls are profiled to improve the resistance to the external atmospheric pressure are, for example GB 730 699 A . GB 715 174 A and GB 730 146A known. Inner and outer wall of the panels are welded at their edges to form laterally projecting webs. These bars prevent the direct use of the panels as the door of a refrigerator.

Bei Haushaltsgeräten, bei denen die Wärme isolierenden Wände eingesetzt werden, herrscht ein enormer Preisdruck. Die Geräte und damit auch ihre Bestandteile müssen deshalb sowohl in den Materialkosten als auch der Montage immer günstiger werden. Demzufolge ist man bestrebt den Materialanteil möglichst gering zu halten. Deshalb werden möglichst dünne Bleche für die Außenwände verwendet. Um den Wänden dennoch die erforderliche Stabilität zu verleihen, werden diese relativ instabilen Wände mit Versteifungsschienen, welche sich entlang der ganzen Wände oder entlang besonders neuralgischer Bereiche, wie den Befestigungsregionen von Fächern oder Aufnahmen erstrecken, versehen. Diese Schienen müssen jedoch in den Wand- oder Gehäusewandaufbau integriert und dort befestigt werden, was wiederum einen Aufwand bedeutet, den man gerne vermeiden würde.Household appliances using heat-insulating walls are under enormous price pressure. The devices and thus their components must therefore always be cheaper both in material costs and assembly. Consequently, one strives to keep the proportion of material as low as possible. Therefore, as thin as possible sheets are used for the outer walls. However, to give the walls the required stability, these relatively unstable walls are provided with stiffening rails extending along or around the walls particularly neuralgic areas, such as the attachment regions of subjects or recordings extend provided. However, these rails must be integrated into the wall or housing wall structure and fixed there, which in turn means an effort that one would like to avoid.

Eine wärmeisolierende Tür für ein Kältegerät vom oben beschriebenen Typ, das die Merkmale des Oberbegriffs des Anspruchs 1 aufweist, ist aus US-A-6 138 432 bekannt.A heat-insulating door for a refrigerator of the type described above, having the features of the preamble of claim 1, is made of US-A-6 138 432 known.

Der Erfindung liegt die Aufgabe zugrunde, eine Wärme isolierende Tür für ein Einbaukältegerät, insbesondere Haushalts-Kältegerät, bereit zu stellen, welche bei möglichst geringem Materialeinsatz eine ausreichende Steifigkeit aufweist.The invention has for its object to provide a heat insulating door for a built-in refrigeration appliance, in particular household refrigeration appliance, which has sufficient rigidity with the least possible use of materials.

Gelöst wird die Aufgabe gemäß der Erfindung durch eine Wärme isolierende Tür für ein Einbaukältegerät mit den Merkmalen von Anspruch 1.The object is achieved according to the invention by a heat-insulating door for a built-in refrigerator with the features of claim 1.

Erfindungsgemäß ist eine Außenwand der Wärme isolierenden Tür wenigstens bereichsweise profiliert. So kann bei geringem Materialbedarf eine ausreichende Stabilität der Wärme isolierenden Tür erreicht werden, ohne dass zusätzliche Versteifungselemente, wie Versteifungsschienen, verwendet werden müssen. Aufgrund der Profilierung können äußerst dünne, Material sparende Außenwände verwendet werden, welche dennoch in der Lage sind, eine steife Tür aufzubauen, welche geeignet ist, als Halterung für die Träger von Kühlgutablagen, wie Fachböden oder Türabstellern, zu dienen.According to the invention, an outer wall of the heat-insulating door is profiled at least in regions. Thus, with low material requirements, a sufficient stability of the heat-insulating door can be achieved without the need for additional stiffening elements, such as stiffening rails. Due to the profiling, extremely thin, material-saving outer walls can be used, which nevertheless are able to build a rigid door which is suitable to serve as a support for the carriers of Kühlgutablagen, such as shelves or door shelves.

Indem wenigstens 60 % einer Wandoberfläche profiliert ist, ist die Eigensteifigkeit so erhöht, dass auf zusätzliche Versteifungselemente verzichtet werden kann. Damit kann die gesamte Wand die Funktionalität einer tragenden Wand übernehmen, sie ist außerdem stabil genug, um Kühlgutablagen an ihr zu befestigen, obwohl mit einer äußerst dünnen Wandstärke gearbeitet werden kann. Da die Randbereiche der Wandoberfläche nicht profiliert sind, können an dieser glatten Fläche Verbindungen der Wände untereinander oder mit anderen Bauteilen der Wärme isolierenden Tür, insbesondere mit einer den Hohlraum der Tür oben oder unten begrenzenden Abschlussleiste, auf einfache Weise hergestellt werden.By at least 60% of a wall surface is profiled, the inherent rigidity is increased so that it can be dispensed with additional stiffening elements. Thus, the entire wall can take over the functionality of a load-bearing wall, it is also stable enough to attach chilled goods to her, although it can be worked with an extremely thin wall thickness. Since the edge regions of the wall surface are not profiled, connections of the walls with each other or with other components of the heat-insulating door, in particular with a closing bar bordering the cavity of the door at the top or bottom, can be produced in a simple manner on this smooth surface.

Vorzugsweise sind Metallbleche der Wärme isolierenden Tür wenigstens bereichsweise profiliert. Oftmals ist die Oberfläche der Außenwand der Kältegerätetür aus Metall, Stahl oder Edelstahl, geformt. Diese Metallbleche eignen sich besonders gut für das Einbringen von Oberflächenprofilen. Die Profilierung kann im Rahmen des Herstellungsprozesses der Bleche besonders vorteilhaft mittels Profilwalzen realisiert werden. Eine Profilierung der Außenwand hat darüber hinaus den Vorteil, dass dem Kältegerät hierdurch eine individuelle Note hinsichtlich ästhetischer Gesichtspunkte hinzugefügt werden kann.Preferably, metal sheets of the heat-insulating door are at least partially profiled. Often, the surface of the outside wall of the refrigerator door is made of metal, steel or stainless steel. These metal sheets are particularly suitable for the application of surface profiles. The profiling can be realized in the context of the manufacturing process of the sheets particularly advantageous by means of profile rolling. A profiling of the outer wall has the additional advantage that the refrigerator can thereby be added to an individual note in terms of aesthetic considerations.

In einer bevorzugten Ausführungsform werden lang gestreckte Profilierungen verwendet, welche sich über die Höhe der Tür erstrecken. Dadurch bekommt die Wärme isolierende Tür, insbesondere in Richtung der Schwerkraft, welche die Hauptwirkrichtung der durch die an der Tür befestigten Kühlgutablagen verursachten Kräfte ist, eine erhöhte Eigensteifigkeit.In a preferred embodiment, elongated profiles are used which extend over the height of the door. As a result, the heat-insulating door, in particular in the direction of gravity, which is the main direction of action of the forces caused by the refrigerated goods trays fastened to the door, has an increased inherent rigidity.

In einer bevorzugten Ausführungsform ist die profilierte Wand als Trapez- oder Rechteckwand ausgebildet. Das heißt, die Profilierung bewirkt wenigstens bereichsweise ein flächiges Muster auf der Wand, das im Querschnitt der Wand einer gekanteten Linie gleicht, welche aus aneinander gereihten trapezförmigen oder rechteckigen Elementen besteht. Insbesondere die trapezförmige Gestaltung der Profilierung verleiht der Wand eine besonders hohe Steifigkeit.In a preferred embodiment, the profiled wall is designed as a trapezoidal or rectangular wall. That is, the profile causes at least partially a flat pattern on the wall, which is similar in cross-section of the wall of a canted line, which consists of juxtaposed trapezoidal or rectangular elements. In particular, the trapezoidal design of the profiling gives the wall a particularly high rigidity.

In einer weiteren vorteilhaften Ausführungsform erfolgt die Profilierung in Form von Wellen, so dass die profilierte Wand im Querschnitt eine Wellenlinie, also eine gekrümmte Linie zeigt. Diese Form der Profilierung ergibt eine zwar etwas weniger stabile Wand als die Profilierung mit kantigen Linien, dafür ist die Wand aber reinigungsfreundlicher, da eine Wellenoberfläche keine Kanten aufweist sondern relativ glatt ist.In a further advantageous embodiment, the profiling takes place in the form of waves, so that the profiled wall in cross section shows a wavy line, ie a curved line. This form of profiling results in a somewhat less stable wall than the profiling with angular lines, but the wall is easier to clean because a shaft surface has no edges but is relatively smooth.

Sonstige Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Other developments of the invention are specified in the subclaims.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den Unteransprüchen im Zusammenhang mit der Beschreibung eines Ausführungsbeispiels, das anhand der Zeichnung eingehend erläutert wird.Further details and advantages of the invention will become apparent from the subclaims in connection with the description of an embodiment which is explained in detail with reference to the drawing.

Es zeigen:

Fig. 1
eine schematische Schnittdarstellung einer Türaußenwand gemäß dem Stand der Technik,
Fig. 2
eine schematische Schnittdarstellung einer profilierten Türaußenwand;
Fig. 3
eine schematisierte Ansicht einer profilierten Kühlschranktür;
Fig. 4
eine fragmentarische perspektivische Ansicht einer profilierten Kühlschranktür gemäß einer bevorzugten Weiterbildung der Erfindung;
Fig. 5
einen Schnitt durch die Kühlschranktür aus Fig. 4; und
Fig. 6
einen Schnitt durch eine Kühlschranktür gemäß einer anderen Weiterbildung der Erfindung.
Show it:
Fig. 1
a schematic sectional view of a door outer wall according to the prior art,
Fig. 2
a schematic sectional view of a profiled door outer wall;
Fig. 3
a schematic view of a profiled refrigerator door;
Fig. 4
a fragmentary perspective view of a profiled refrigerator door according to a preferred embodiment of the invention;
Fig. 5
a section through the refrigerator door Fig. 4 ; and
Fig. 6
a section through a refrigerator door according to another embodiment of the invention.

Elemente mit gleicher Funktion und Wirkungsweise sind in den Figuren 1 bis 6 jeweils mit denselben Bezugszeichen versehen.Elements with the same function and mode of action are in the FIGS. 1 to 6 each provided with the same reference numerals.

Fig. 1 zeigt einen Schnitt durch eine Kühlschranktür 1 des Standes der Technik, welche eine durch Tiefziehen geformte Kunststoffinnenwand 2, eine Wärmeisolationsschicht 3 und eine mit der Innenwand 2 zu einem Türkorpus verbundene Außenwand 4 aufweist. Die aus Stahlblech geformte Außenwand 4 ist durch die benetzende Wirkung der durch Aufschäumen von Polyethan, in dem von der Innenwand 2 und der Außenwand 4 begrenzten Zwischenraum, gebildeten Isolationsschicht 3 mit der Innenwand 2 zu einem formsteifen Gebilde verbunden. In die geschäumte Isolationsschicht 3 sind üblicherweise Versteifungsschienen 5a, 5b, 5c und 5d eingeformt, die der Kühlschranktür 1 ausreichende Stabilität vermitteln, obwohl sowohl die Kunststoffinnenwand 2 als auch die Stahlaußenwand 4 extrem dünn und Material sparend ausgebildet sind. Dieser bekannte Aufbau liegt der Erfindung zugrunde. Er ist vor allem deshalb verbesserungsbedürftig, da das Einbringen von Verstärkungselementen wie der Stahlschienen 5a, b, c und d im Fertigungsprozess relativ aufwändig ist, und damit die Kosten einer solchen Kühlschranktür 1 unnötig in die Höhe getrieben werden. Fig. 1 shows a section through a refrigerator door 1 of the prior art, which has a formed by thermoforming plastic inner wall 2, a heat insulating layer 3 and an outer wall 4 connected to the inner wall 2 to a door body. The outer wall 4 formed of sheet steel is connected to the inner wall 2 by the wetting effect of the foaming of polyethane, in which bounded by the inner wall 2 and the outer wall 4 space, insulating layer 3 to form a dimensionally stable structure. In the foamed insulation layer 3 usually stiffening rails 5a, 5b, 5c and 5d are formed, which give the refrigerator door 1 sufficient stability, although both the plastic inner wall 2 and the steel outer wall 4 are extremely thin and material-saving design. This known structure is the basis of the invention. Above all, it is in need of improvement, since the introduction of reinforcing elements such as the steel rails 5a, b, c and d in the manufacturing process is relatively complex, and thus the cost of such a refrigerator door 1 are unnecessarily driven up.

Die in Fig. 2 dargestellte erfindungsgemäße Kältegerätetür, insbesondere Kühlschranktür 1, ist ebenfalls aus einer Kunststoffinnenwand 2, einer aus Metallblech geformten Türaußenwand 4 und einer zwischen diese eingebrachten Schaumisolierschicht 3 aufgebaut. Bei dieser Kühlschranktür 1 kann jedoch auf die in der Fig. 1 gezeigten Versteifungselemente 5a bis d verzichtet werden, da die Türaußenwand 4 Profilierungen 6 aufweist, welche der Kühlschranktür 1 die erforderliche Eigensteifigkeit verleihen. Die Profilierung der Außenwand 4 kann beispielsweise im Rahmen des Herstellverfahrens durch Profilierwalzen erzeugt werden, welche die Rechteckprofile in das Stahlblech der Außenwand 4 drücken.In the Fig. 2 illustrated refrigerator door according to the invention, in particular refrigerator door 1, is also constructed of a plastic inner wall 2, an outer door panel 4 formed of sheet metal and a Schaumisolierschicht 3 introduced between them. In this refrigerator door 1, however, on the in the Fig. 1 shown stiffening elements 5a to d are omitted, since the door outer wall has 4 profiles 6, which give the refrigerator door 1 the required inherent rigidity. The profiling of the outer wall 4 can be produced for example in the context of the manufacturing process by profiling rolls, which the Press rectangular profiles into the steel sheet of the outer wall 4.

Die Profilierungen 6 verlaufen, wie auf der Fig. 3 zu sehen ist, über die gesamte Länge der Außenwand 4 der Kühlschranktür 1. Dieser ausgedehnte Verlauf der langgestreckten Rechteckprofile 6 ergibt ein Profilelement 7, das die gesamte Außenwand 4 der Kühlschranktür 1 umfasst. Durch diese Profilierungen 6 wird der Außenwand 4 und damit der gesamten Kühlschranktür 1 in Richtung der Schwerkraft eine über die durch die Wandstärke der Außenwand 4 allein bedingte, deutlich hinausgehende Steifigkeit und Stabilität verliehen, die gewährleistet, dass an der Türinnenwand 2 hier nicht dargestellte Kühlgutablagen angebracht werden können, ohne dass die Kühlschranktür 1 dadurch überlastet wird.The profiles 6 run as on the Fig. 3 can be seen over the entire length of the outer wall 4 of the refrigerator door 1. This extended course of the elongated rectangular profiles 6 results in a profile element 7, which comprises the entire outer wall 4 of the refrigerator door 1. Through these profiling 6, the outer wall 4 and thus the entire refrigerator door 1 in the direction of gravity is imparted by the wall thickness of the outer wall 4 alone conditional, significantly exceeding rigidity and stability, which ensures that attached to the door inner wall 2, not shown Kühlgutablagen can be, without the refrigerator door 1 is thereby overloaded.

Fig. 4 zeigt eine fragmentarische Ansicht einer unteren Ecke einer Kühlschranktür 1 gemäß einer bevorzugten Weiterentwicklung der Erfindung. Das einen inneren Hohlraum 8 der Tür ausfüllende Schaumstoffmaterial ist in Fig. 4 weggelassen, um Details von Innen- und Außenwand 2 bzw. 4 besser zeigen zu können. Auf der Vorderseite der Tür, in der aus Blech geformten Außenwand 4, ist eine Vielzahl von Profilelementen 6 in Form von vertikal langgestreckten Rippen mit rundbogigem Querschnitt gebildet. Die Rippen 6 folgen in gleichmäßigem Abstand lückenlos aufeinander und füllen die Vorderseite der Tür im Wesentlichen über ihre gesamte Breite hinweg, von einer seitlichen Kante 9 zur nicht dargestellten gegenüberliegenden Kante im Wesentlichen vollständig aus. An die Seitenkanten 9 anschließende seitliche Flanken 10, die ebenfalls einteilig aus dem Blech der Außenwand 4 gebildet sind, sind von Profilelementen 6 frei; im Bereich der seitlichen Flanken 10 ist die Außenwand von Natur aus durch das Vorhandensein der die Flanke 10 begrenzenden Kanten 9, 11 versteift. An die Kante 11 schließt ein zur Vorderseite der Außenwand 4 im Wesentlichen paralleler Randstreifen 12 an, an welchem die Innenwand 2 schaumdicht, zum Beispiel durch Verklebung befestigt ist. Fig. 4 shows a fragmentary view of a lower corner of a refrigerator door 1 according to a preferred development of the invention. The an inner cavity 8 of the door filling foam material is in Fig. 4 omitted to better show details of inner and outer walls 2 and 4 respectively. On the front of the door, in the sheet-metal-formed outer wall 4, a plurality of profile elements 6 in the form of vertically elongated ribs is formed with round-arched cross-section. The ribs 6 follow each other at a uniform distance without gaps and fill the front of the door substantially over its entire width, from a lateral edge 9 to the opposite edge, not shown substantially completely. On the side edges 9 subsequent lateral flanks 10, which are also integrally formed from the sheet of the outer wall 4, are free of profile elements 6; in the region of the lateral flanks 10, the outer wall is inherently stiffened by the presence of the flanks 10 delimiting edges 9, 11. The edge 11 is adjoined by an edge strip 12 which is essentially parallel to the front side of the outer wall 4 and to which the inner wall 2 is attached in a foam-tight manner, for example by gluing.

Die Profilelemente 6 erstrecken sich über im Wesentlichen die gesamte Höhe der Außenwand 4 mit Ausnahme von Randstreifen 13 an ihrer oberen bzw. unteren Kante. Diese Randstreifen 13 sind eben belassen, um einen schaumdichten Eingriff der Außenwand 4 in eine Nut 14 einer unteren Abschlussleiste 15 zu gewährleisten, die, verbunden mit Innen- und Außenwand 2 bzw. 4 den Innenraum 8 nach unten abschließt.The profile elements 6 extend over substantially the entire height of the outer wall 4 with the exception of edge strips 13 at its upper or lower edge. These edge strips 13 are left flat to ensure a foam-tight engagement of the outer wall 4 in a groove 14 of a lower end strip 15, which, connected to inner and outer walls 2 and 4, the interior 8 closes down.

Eine zu der unteren Abschlussleiste 15 spiegelbildliche, nicht dargestellte obere Abschlussleiste verschließt den Innenraum 8 an seinem oberen Ende.One of the lower end strip 15 mirror image, not shown upper end bar closes the interior 8 at its upper end.

In der Nähe der seitlichen Kante 9 sind in dem unteren Randstreifen 13 und dem oberen Randstreifen je zwei Schraublöcher 16 gebildet. Wie insbesondere in dem durch ein solches Schraubloch 16 verlaufenden vertikalen Schnitt der Fig. 5 zu erkennen, ist die Außenwand 4 in der Umgebung der Schraublöcher 16 schaumseitig durch ein Hinterlegteil 17 versteift, in welchem ein Schraubgewinde einer von außen eingeschraubten, nicht dargestellten Schraube Halt findet. Dem Hinterlegteil 17 außenseitig gegenüber liegt eine Abstandhalterplatte 18, ebenfalls mit Schraublöchern, deren Dicke geringfügig größer ist als ein Überstand der unteren Abschlussleiste 15 über die Vorderseite der Außenwand 4. So verhindert die Abstandhalterplatte 18, dass ein mit Hilfe der Schrauben an ihrer Außenseite befestigtes, L-förmiges Beschlagteil 19 gegen den überstehenden Rand der unteren Abschlussleiste 15 drückt und deren Sitz beeinträchtigt oder sie beschädigt.In the vicinity of the lateral edge 9, two screw holes 16 are formed in the lower edge strip 13 and the upper edge strip. As in particular in the running through such a screw hole 16 vertical section of the Fig. 5 can be seen, the outer wall 4 in the vicinity of the screw holes 16 foam side stiffened by a backing member 17, in which a screw thread of a screwed from the outside, not shown screw stops. The backing member 17 on the outside opposite a spacer plate 18, also with screw holes whose thickness is slightly larger than a projection of the lower end strip 15 on the front of the outer wall 4. Thus prevents the spacer plate 18 that a fastened by means of screws on its outside, L-shaped fitting member 19 presses against the protruding edge of the lower end strip 15 and affects their seat or damaged.

Ein horizontaler Schenkel 20 des Beschlagteils 19 erstreckt sich in einem geringen Abstand entlang der Unterseite der Abschlussleiste 15.A horizontal leg 20 of the fitting part 19 extends at a small distance along the underside of the end strip 15th

Das Beschlagteil 19 ist Bestandteil eines Scharniers für die schwenkbare Aufhängung der Tür 1. In Fig. 5 ist dieser Sachverhalt angedeutet durch einen sich von dem horizontalen Schenkel 20 aus vertikal abwärts erstreckenden Gelenkzapfen 21, der in ein nicht dargestelltes, am Korpus des Kühlschranks festes Lager eingreift. Selbstverständlich kann das Beschlagteil 19 auch mit beliebigen anderen Scharnierkonstruktionen kombiniert werden, um eine schwenkbare Aufhängung der Tür 1 zu erhalten.The fitting 19 is part of a hinge for the pivotal suspension of the door 1. In Fig. 5 This fact is indicated by a pivot pin 21 extending vertically downwards from the horizontal leg 20 and engaging a bearing, not shown, on the body of the refrigerator. Of course, the fitting part 19 can also be combined with any other hinge constructions in order to obtain a pivotable suspension of the door 1.

Fig. 6 zeigt einen horizontalen Teilschnitt durch eine Kältegerätetür gemäß einer weiteren Ausgestaltung der Erfindung. Während die Ausgestaltung der Fig. 4 und 5, insbesondere wegen der Befestigung des Beschlagteils 19 an der Türvorderseite für ein Einbaukältegerät prädestiniert ist, bei dem die Außenwand 4 hinter einer Möbelplatte verborgen ist, ist die Ausgestaltung der Fig. 6 vor allem für ein Kältegerät mit frei sichtbarer Tür vorgesehen. Die Außenwand 4 ist hier mit einer Folie 22 kaschiert, die in sich steif ist und sich eben über die Rippen 6 hinwegzieht. Fig. 6 shows a horizontal partial section through a refrigerator door according to another embodiment of the invention. While the design of the 4 and 5 , Especially because of the attachment of the fitting part 19 on the door front is predestined for a built-in refrigerator, in which the outer wall 4 is hidden behind a furniture panel, the embodiment of Fig. 6 especially intended for a refrigerator with a freely visible door. The outer wall 4 is here laminated with a film 22 which is stiff in itself and just above the ribs 6 pulls away.

Die zweckmäßigen Konstruktionen der Ausführungsbeispiele gemäß den Figuren 1 bis 6 lassen sich in vorteilhafter Weise selbstverständlich auf beliebige wärmeisolierende Wände oder Wandteile eines Haushalts-Kältegeräts übertragen. So kann eine derart konstruierte Wand beispielsweise auch als Rückwand und/oder Seitenwand eines Haushalts-Kältegerätes vorgesehen sein. Dies ist jedoch kein Bestandteil der vorliegenden ErfindungThe functional constructions of the embodiments according to the FIGS. 1 to 6 can of course be transferred to any heat-insulating walls or wall parts of a household refrigerating appliance in an advantageous manner. For example, a wall constructed in this way can also be provided as a rear wall and / or side wall of a household refrigerating appliance. However, this is not part of the present invention

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Kühlschranktürrefrigerator door
22
Innenwandinner wall
33
Isolierschichtinsulating
44
Außenwandouter wall
55
Versteifungsschienestiffening rail
66
Rechteckprofilierungrectangular profile
77
Profilelementprofile element
88th
Innenrauminner space
99
Seitliche KanteSide edge
1010
Flankeflank
1111
Kanteedge
1212
Randstreifenedge strips
1313
Randstreifenedge strips
1414
Nutgroove
1515
Abschlussleisteend strip
1616
Schraublochscrew
1717
Hinterlegteilbacking piece
1818
AbstandhalterplatteSpacer plate
1919
Beschlagteilfitting part
2020
Schenkelleg
2121
Gelenkzapfenpivot pin
2222
Foliefoil

Claims (12)

  1. Thermally insulating door (1) for a built-in refrigerating appliance, particularly domestic refrigerating appliance, with an outer wall (4) and an inner wall (2), which surround a cavity having a thermal insulation layer (3), wherein the outer wall (4) and/or the inner wall (2) has or have between the lateral edges (9) at least one stiffnessincreasing profiled region (7) extending over at least 60% of the height of a wall surface of the outer wall (4) or inner wall (2) and wherein the profiled region (7) is bounded at the top and bottom by a planar edge strip (13) of the outer wall (4) or inner wall (2), characterised in that a door hinge (19) is fastened to the planar edge strip (13).
  2. Thermally insulating door according to claim 1, characterised in that the at least one profiled region (7) comprises a plurality of profile elements (6).
  3. Thermally insulating door according to claim 2, characterised in that the profile elements (6) of the plurality adjoin one another and the profiled region (7) extends over the surface of the thermally insulating wall (1) between the lateral edges (9) thereof.
  4. Thermally insulating door (1) according to any one of the preceding claims, characterised in that the profile elements (6) are elongate in vertical direction.
  5. Thermally insulating door (1) according to any one of the preceding claims, characterised in that the profile elements (6) form polygonal lines in cross-section.
  6. Thermally insulating door (1) according to any one of claims 1 to 4, characterised in that the profile elements (6) form curved lines in cross-section.
  7. Thermally insulating door (1) according to any one of the preceding claims, characterised in that the outer wall (4) and/or the inner wall (2) is or are formed from metal.
  8. Thermally insulating door (1) according to any one of claims 1 to 6, characterised in that the outer wall (4) and/or the inner wall (3) is or are formed from plastics material.
  9. Thermally insulating door (1) according to any one of the preceding claims, characterised in that a closure strip (15) bounding the cavity (8) adjoins the edge strip (13).
  10. Thermally insulating door (1) according to any one of the preceding claims, characterised in that the profiled region (7) is disposed in the region of the fastening of a shelf for goods to be cooled.
  11. Thermally insulating door (1) according to any one of the preceding claims, characterised in that the profiled region (7) is covered by a cladding (22).
  12. Domestic refrigerating appliance with at least one thermally insulating door (1) according to any one of the preceding claims.
EP08761253A 2007-06-25 2008-06-20 Heat-insulating door for a built-in refrigerating device Active EP2158436B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007029184A DE102007029184A1 (en) 2007-06-25 2007-06-25 Heat-insulating wall for a refrigeration appliance
PCT/EP2008/057835 WO2009000758A2 (en) 2007-06-25 2008-06-20 Heat-insulating wall for a refrigerating device

Publications (2)

Publication Number Publication Date
EP2158436A2 EP2158436A2 (en) 2010-03-03
EP2158436B1 true EP2158436B1 (en) 2012-08-29

Family

ID=40092146

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08760963A Not-in-force EP2165132B1 (en) 2007-06-25 2008-06-12 Heat-insulating refrigerator door
EP08761253A Active EP2158436B1 (en) 2007-06-25 2008-06-20 Heat-insulating door for a built-in refrigerating device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP08760963A Not-in-force EP2165132B1 (en) 2007-06-25 2008-06-12 Heat-insulating refrigerator door

Country Status (6)

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US (2) US20100187241A1 (en)
EP (2) EP2165132B1 (en)
CN (3) CN104697280A (en)
DE (1) DE102007029184A1 (en)
RU (2) RU2010100937A (en)
WO (2) WO2009000671A2 (en)

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Also Published As

Publication number Publication date
CN101680705A (en) 2010-03-24
CN101680705B (en) 2012-11-28
WO2009000671A3 (en) 2009-05-28
WO2009000671A2 (en) 2008-12-31
WO2009000758A3 (en) 2009-05-28
RU2010100937A (en) 2011-07-27
WO2009000758A2 (en) 2008-12-31
EP2158436A2 (en) 2010-03-03
CN104697280A (en) 2015-06-10
CN101743450A (en) 2010-06-16
RU2010100935A (en) 2011-07-27
EP2165132B1 (en) 2013-02-27
EP2165132A2 (en) 2010-03-24
US20100180627A1 (en) 2010-07-22
DE102007029184A1 (en) 2009-01-08
US20100187241A1 (en) 2010-07-29

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