EP2645026B1 - Refrigeration and/or freezer device - Google Patents

Refrigeration and/or freezer device Download PDF

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Publication number
EP2645026B1
EP2645026B1 EP13001414.5A EP13001414A EP2645026B1 EP 2645026 B1 EP2645026 B1 EP 2645026B1 EP 13001414 A EP13001414 A EP 13001414A EP 2645026 B1 EP2645026 B1 EP 2645026B1
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EP
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Prior art keywords
refrigeration
support component
reinforcement member
heat insulation
freezer
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EP13001414.5A
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German (de)
French (fr)
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EP2645026A3 (en
EP2645026A2 (en
Inventor
Richard Stocker
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Liebherr Hausgeraete Lienz GmbH
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Liebherr Hausgeraete Lienz GmbH
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Publication of EP2645026A3 publication Critical patent/EP2645026A3/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/065—Details
    • F25D23/067—Supporting elements
    • 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
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • F25D2201/12—Insulation with respect to heat using an insulating packing material

Definitions

  • the present invention relates to a refrigerator and / or freezer with at least one housing which at least partially surrounds at least a room cooled during operation of the device, wherein the housing and / or its closure element comprises a heat insulating material and wherein the housing and / or the closure element of Further comprises at least one reinforcing element for mechanical stabilization of the housing or the closure element.
  • Cooling and / or freezing devices known from the prior art usually have an inner container which surrounds the cooled inner space except for the open side.
  • the inner container adjoins on its outer side to a heat insulating material, in particular to a foaming. This foaming is located between the inner container and the device housing.
  • reinforcing elements are used for example in the form of profiles. So it is known in chests to use such reinforcing elements in the region of the cover. These reinforcing elements are usually arranged or fixed in such a way that they are enclosed by the insulating foam during the foaming process. This means that in known devices, the foam is in direct contact with the reinforcing element. Although this creates a stable bond that is capable of transmitting the bending forces to the reinforcement so that these forces are absorbed by the reinforcement. Since these reinforcing elements have a different temperature behavior, ie have a different length expansion as a function of the temperature relative to the foam, the deformation described above can not be completely prevented.
  • foam / steel profile may occur at the temperatures or temperature differences to tensions or bimetallic effects that can be partially compensated by the bending strength of the steel profile.
  • foam / steel profile may come despite the use of such steel profiles to deformations and in particular in terms of the Thermal expansion behavior with unfavorable material pairings.
  • reinforcing elements for this reason, even counterproductive and still favor a deformation.
  • the present invention is therefore based on the object to provide a refrigerator and / or freezer, in which a temperature-induced deformation can be largely or completely prevented.
  • the invention is therefore based on the idea that at least partially, preferably completely, the reinforcing elements do not make direct contact with the heat-insulating material, but at least provide a carrier component which in turn contacts the heat-insulating material, in particular the foaming, on its outside stands and that receives in its interior or the reinforcing elements.
  • the advantage is achieved that the influence of the reinforcing elements or is limited to their actual function, namely, the mechanical stability, in particular the flexural rigidity of the device to increase.
  • the influence of the reinforcing element or elements on deformations, for example due to bimetal effects, can be largely or completely prevented by the present invention.
  • the reinforcing element (s) according to the invention can perform the function of mechanically stabilizing the housing and / or the closure element without having a negative influence with respect to device deformations.
  • the thermal insulation material may be a foaming, preferably polyurethane foam. This foaming is located in a region between the inner container and the outer housing, for example, a refrigerator and / or freezer or a refrigerator and / or freezer or between the inside and the outside of a door, front of a drawer, lid, etc.
  • the carrier component has a circumferentially closed space in which the reinforcing element is located.
  • the support member may thus be embodied, for example, as a hollow profile, which preferably has an elongated extension and in which the reinforcing element or the reinforcing elements are located, which are preferably also designed as elongated elements.
  • the invention provides that a relative movement between the reinforcing elements and the or the support members can take place.
  • the reinforcing element is able to absorb bending forces. This means that the reinforcing element has the property of absorbing bending stresses to a certain degree without noticeably deforming.
  • the reinforcing element is made of metal or has metal.
  • the support member itself has the function of partially or completely separating the reinforcing member from the heat insulating material and thus need not have any particular strength properties. It is therefore sufficient if the bending forces are absorbed exclusively or at least predominantly by the one or more reinforcing elements.
  • the support member may for example consist of plastic or plastic.
  • the carrier component is made of a material that has the same or a similar thermal expansion behavior as the heat insulating material or that the difference in thermal expansion behavior between the heat insulating material and the carrier component is less than between the heat insulating material and the reinforcing element.
  • the thermal expansion behavior between the heat insulating material and the support member is identical or substantially identical, so that under the influence of temperature changes no or only small deformations occur that can be ignored or can be collected by the or the reinforcing elements.
  • the reinforcing element and / or the carrier component may have an elongate shape, wherein the reinforcing element may be formed as a hollow profile or as a solid profile.
  • the apparatus may include a body having two sidewalls and a front and back wall or a bottom and top wall, wherein the reinforcing member and the support member are located in all of said walls or only one or some of them. It is also conceivable for the reinforcing element and the carrier component to extend over the entire length and / or width of the walls or only over a partial area thereof.
  • the device is a cabinet or a chest, wherein the reinforcement profile according to the invention and the support component are present in all body walls or else only in one or more body walls.
  • the reinforcement profile according to the invention and the support component are present in all body walls or else only in one or more body walls.
  • the or the reinforcing elements and the one or more support members only in the carcass sides or in the carcass elements, which tend to deformation.
  • the present invention is not limited to the body of a device. It may additionally or alternatively also be used in the closure element (s) of the device, such as in a door or a lid or a front of a drawer.
  • the reinforcing element and / or the carrier component are formed in one or more parts and / or are formed as circumferential elements. So it is for example possible that the support member is designed as a rectangular profile, which is formed circumferentially and surrounds a circumferential cavity in which one or more reinforcing elements are arranged, which are also formed circumferentially.
  • the cross-sectional shapes of the carrier component is arbitrary per se.
  • the support member may be made in cross-section, for example, angular, such as rectangular, square or round.
  • the device has a plane formed by its open side, ie in a chest a horizontal plane and a cabinet a vertical plane and extending the reinforcing element and the carrier profile in this plane or parallel to this plane.
  • the carrier component and the reinforcing element are horizontal and / or frame-shaped and surround the cooled space, for example at the height of the cover frame, ie in the upper region of the device or in an underlying section.
  • the carrier component and the reinforcing element surrounds the front-side carcass opening in the manner of a frame, wherein this can be arranged in the front region or else in a region displaced to the rear relative thereto.
  • the individual carrier components and reinforcing elements can be horizontal or oblique or even vertical in the case of chests. This applies accordingly to cabinet-type refrigerators and / or freezers.
  • the material or the materials are selected such that the lowest possible coefficient of friction results. It is conceivable to carry out the carrier component as a coextrusion component.
  • the choice of or the carrier component depends on the particular installation situation.
  • the carrier component can be designed as one or more parts. In a preferred embodiment of the invention, it is provided that it separates the reinforcing element completely or as completely as possible from the insulating material and in particular from the foam.
  • the present invention is not limited to the body of a refrigerator and / or freezer, but alternatively or additionally includes its closure element, such as the lid of a chest or the door of a cabinet.
  • the device is a refrigerator and / or chest freezer.
  • This may have a cover frame, which forms the upper end of the body and is preferably carried out circumferentially.
  • the carrier component according to the invention may extend partially or completely in the said cover frame or be embodied as a one-piece component of the cover frame. It is conceivable that the support member is performed circumferentially or extends only in sections of the cover.
  • the single FIGURE is a cross-sectional view of a portion of the body of a refrigerator and / or freezer.
  • the reference numeral 10 the existing metal outer wall of the chest is marked.
  • the reference numeral 20 denotes the inner container, which consists for example of plastic.
  • a foaming 30, which consists of a PU foam.
  • a plastic carrier component 40 extending within the foam 30 in the horizontal direction, a plastic carrier component 40, the is designed as a hollow profile.
  • This support member 40 is surrounded in its entire periphery by foam 30, that is completely embedded.
  • a reinforcing element 50 which is designed as a metal part and has the shape of a hollow profile.
  • the cavity formed by the support member 40 is larger than the outer dimension of the reinforcing member 50, so that a relative movement between the two elements is possible.
  • the reinforcing element 50 is thus loosely received in the cavity of the support member 40 and rests on the bottom thereof.
  • the thermal expansion of the reinforcing element 50 can take place independently of the thermal expansion of the foam 30 or other components of the device that are in contact with the foam, since decoupling takes place by the carrier component 40.
  • the reinforcing element 50 can thus absorb bending forces and thus contribute to a mechanical stabilization of the entire body and / or closure element. However, it does not contribute to deformation due to its loose arrangement in the support member. A bimetallic effect involving the reinforcing element 50 can thus not occur.
  • the thermal expansion behavior between the foam 30 and support member 40 is equal or substantially equal. If, nevertheless, a bimetallic effect occurs between the foam 30 and the carrier component 40, this or the forces caused by this can be absorbed by the reinforcing element 50 so that no deformation takes place.
  • a preferred embodiment of the invention is the use in the form of a chest, in particular a supermarket chest.
  • corresponding material pairings can be selected, such as, for example, metal and plastic
  • the inside of the carrier component 40 and / or the outside of the reinforcing element 50 with a coating which reduces the friction between the two elements relative to the state or coating.
  • reinforcement member 50 and support member 40 shown in the figure may be circumferentially around the body, i. extend around the chilled room. It is also conceivable, however, to use this arrangement only partially, for example on the deformation-prone sides of a refrigerator and / or freezer.

Description

Die vorliegende Erfindung betrifft ein Kühl- und/oder Gefriergerät mit wenigstens einem Gehäuse, das zumindest einen im Betrieb des Gerätes gekühlten Raum zumindest bereichsweise umgibt, wobei das Gehäuse und/oder dessen Verschlusselement ein Wärmeisolationsmaterial aufweist und wobei das Gehäuse und/oder das Verschlusselement des Weiteren wenigstens ein Verstärkungselement zur mechanischen Stabilisierung des Gehäuses bzw. des Verschlusselementes aufweist.The present invention relates to a refrigerator and / or freezer with at least one housing which at least partially surrounds at least a room cooled during operation of the device, wherein the housing and / or its closure element comprises a heat insulating material and wherein the housing and / or the closure element of Further comprises at least one reinforcing element for mechanical stabilization of the housing or the closure element.

Aus dem Stand der Technik bekannte Kühl- und/oder Gefriergeräte weisen üblicherweise einen Innenbehälter auf, der den gekühlten Innenraum bis auf die offene Seite umgibt. Der Innenbehälter grenzt an seiner Außenseite an ein Wärmeisolationsmaterial, insbesondere an eine Ausschäumung an. Diese Ausschäumung befindet sich zwischen den Innenbehälter und dem Gerätegehäuse.Cooling and / or freezing devices known from the prior art usually have an inner container which surrounds the cooled inner space except for the open side. The inner container adjoins on its outer side to a heat insulating material, in particular to a foaming. This foaming is located between the inner container and the device housing.

Aufgrund von unterschiedlichen Materialpaarungen und dem unterschiedlichen Wärmeausdehnungsverhalten der einzelnen Materialien kann es bei Kühl-und/oder Gefriergeräten zu Verformungen kommen. Diese treten beispielsweise durch das Auftreten unterschiedlicher Temperaturen (gekühlter Innenraum, warme Gehäuseaußenseite) oder auch durch die Wärmeentwicklung beim chemischen Vernetzen des Isolierschaums auf.
Diese Verformung kann beispielsweise in Form einer Ausbauchung des Gerätegehäuses auftreten, was nicht nur im Hinblick auf den optischen Gesamteindruck des Gerätes unerwünscht ist, sondern auch zur Undichtigkeit oder sonstigen Funktionsproblemen von Schiebedeckeln etc. führen kann. Kühl- und/oder Gefriergeräte sind aus US4771532 A bekannt.Due to different material pairings and the different thermal expansion behavior of the individual materials, it can in cooling and / or Freezers come to deformations. These occur, for example, by the occurrence of different temperatures (cooled interior, warm housing outside) or by the heat development during chemical crosslinking of the insulating foam.
This deformation can occur, for example, in the form of a bulging of the device housing, which is not only undesirable in terms of the overall visual impression of the device, but can also lead to leakage or other functional problems of sliding lids, etc. Refrigerators and / or freezers are out US4771532 A known.

Um dieses Problem zu beheben bzw. der genannten Verformung entgegenzuwirken werden Verstärkungselemente zum Beispiel in Form von Profilen eingesetzt. So ist es bei Truhen bekannt, derartige Verstärkungselemente im Bereich des Abdeckrahmens einzusetzen. Diese Verstärkungselemente werden üblicherweise derart angeordnet bzw. fixiert, dass sie beim Schäumvorgang vom Isolierschaum umschlossen werden. Dies bedeutet, dass bei bekannten Geräten der Schaum unmittelbar mit dem Verstärkungselement in Kontakt steht.
Dadurch wird zwar ein stabiler Verbund geschaffen, der in der Lage ist, die Biegekräfte auf die Verstärkung zu übertragen, so dass diese Kräfte von der Verstärkung aufgenommen werden.
Da diese Verstärkungselemente ein unterschiedliches Temperaturverhalten aufweisen, d.h. eine andere Längenausdehnung in Abhängigkeit der Temperatur gegenüber dem Schaum aufweisen, kann die oben beschriebene Verformung nicht vollständig verhindert werden. Durch eine Materialpaarung Schaum/Stahlprofil kann es bei den auftretenden Temperaturen bzw. Temperaturunterschieden zu Spannungen bzw. zu Bimetall-Effekten kommen, die durch die Biegefestigkeit des Stahlprofil teilweise kompensiert werden können.
Jedoch hat sich gezeigt, dass es trotz Einsatzes von solchen Stahlprofilen zu Verformungen kommen kann und zwar insbesondere bei in Hinblick auf das Wärmeausdehnungsverhalten bei ungünstigen Materialpaarungen. Mitunter kann der Einsatz von Verstärkungselementen aus diesem Grund sogar kontraproduktiv sein und eine Verformung noch begünstigen.To overcome this problem or to counteract the said deformation reinforcing elements are used for example in the form of profiles. So it is known in chests to use such reinforcing elements in the region of the cover. These reinforcing elements are usually arranged or fixed in such a way that they are enclosed by the insulating foam during the foaming process. This means that in known devices, the foam is in direct contact with the reinforcing element.
Although this creates a stable bond that is capable of transmitting the bending forces to the reinforcement so that these forces are absorbed by the reinforcement.
Since these reinforcing elements have a different temperature behavior, ie have a different length expansion as a function of the temperature relative to the foam, the deformation described above can not be completely prevented. By a combination of materials foam / steel profile may occur at the temperatures or temperature differences to tensions or bimetallic effects that can be partially compensated by the bending strength of the steel profile.
However, it has been shown that it can come despite the use of such steel profiles to deformations and in particular in terms of the Thermal expansion behavior with unfavorable material pairings. Occasionally, the use of reinforcing elements for this reason, even counterproductive and still favor a deformation.

Der Versuch, dennoch Verformungen zu verhindern und zwar durch stärkere Verstärkungselemente ist insofern problematisch, als dass die Platzverhältnisse innerhalb des Schaum bzw. im Bereich zwischen Innenbehälter und Gehäuse begrenzt sind, wodurch man bei größeren bzw. langen Geräten keine ausreichend dimensionierte Verstärkung einbringen kann.The attempt to prevent yet deformation by stronger reinforcing elements is problematic in that the space within the foam or in the area between the inner container and the housing are limited, so you can bring in larger or long devices not sufficiently dimensioned gain.

Der vorliegenden Erfindung liegt somit die Aufgabe zu Grunde, ein Kühl-und/oder Gefriergerät zu schaffen, bei dem eine temperaturbedingte Verformung weitgehend oder vollständig verhindert werden kann.The present invention is therefore based on the object to provide a refrigerator and / or freezer, in which a temperature-induced deformation can be largely or completely prevented.

Diese Aufgabe wird durch ein Kühl- und/oder Gefriergerät mit den Merkmalen des Anspruchs 1 gelöst. Danach ist vorgesehen, dass das Verstärkungselement bereichsweise oder vollständig nicht unmittelbar mit dem Wärmeisolationsmaterial in Verbindung steht, sondern in einem Trägerbauteil aufgenommen ist, das seinerseits in dem Wärmeisolationsmaterial aufgenommen ist, wobei das Verstärkungselement derart in dem Trägerbauteil aufgenommen ist, dass es relativ zu diesem bewegbar ist.This object is achieved by a refrigerator and / or freezer with the features of claim 1. Thereafter, it is envisaged that the reinforcing element is partially or completely not directly associated with the heat insulating material, but is received in a support member, which in turn is incorporated in the heat insulating material, wherein the reinforcing member is received in the support member such that it is movable relative thereto is.

Der Erfindung liegt somit der Gedanke zu Grunde, das oder die Verstärkungselemente wenigstens bereichsweise, vorzugsweise vollständig nicht unmittelbar mit dem Wärmeisolationsmaterial in Kontakt treten zu lassen, sondern wenigstens ein Trägerbauteil vorzusehen, das seinerseits mit dem Wärmeisolationsmaterial, insbesondere mit der Ausschäumung auf seiner Außenseite in Kontakt steht und das in seinem Inneren das oder die Verstärkungselemente aufnimmt.The invention is therefore based on the idea that at least partially, preferably completely, the reinforcing elements do not make direct contact with the heat-insulating material, but at least provide a carrier component which in turn contacts the heat-insulating material, in particular the foaming, on its outside stands and that receives in its interior or the reinforcing elements.

Auf diese Weise wird der Vorteil erreicht, dass der Einfluss des oder der Verstärkungselemente auf ihre eigentliche Funktion beschränkt wird, nämlich darauf, die mechanische Stabilität, insbesondere die Biegesteifigkeit des Gerätes zu erhöhen. Der Einfluss des oder der Verstärkungselemente auf Verformungen beispielsweise durch Bimetall-Effekte kann durch die vorliegende Erfindung weitgehend oder vollständig verhindert werden. Das oder die Verstärkungselemente können erfindungsgemäß die Funktion der mechanischen Stabilisierung des Gehäuses und/oder des Verschlusselementes ausüben, ohne einen negativen Einfluss im Hinblick auf Geräteverformungen zu haben.In this way, the advantage is achieved that the influence of the reinforcing elements or is limited to their actual function, namely, the mechanical stability, in particular the flexural rigidity of the device to increase. The influence of the reinforcing element or elements on deformations, for example due to bimetal effects, can be largely or completely prevented by the present invention. The reinforcing element (s) according to the invention can perform the function of mechanically stabilizing the housing and / or the closure element without having a negative influence with respect to device deformations.

Bei dem Wärmeisolationsmaterial kann es sich um eine Ausschäumung, vorzugsweise um Polyurethanschaum handeln. Diese Ausschäumung befindet sich in einem Bereich zwischen Innenbehälter und Außengehäuse beispielsweise einer Kühl- und/oder Gefriertruhe oder auch eines Kühl- und/oder Gefrierschrankes oder auch zwischen der Innen- und der Außenseite einer Tür, Front einer Lade, Deckels, etc.The thermal insulation material may be a foaming, preferably polyurethane foam. This foaming is located in a region between the inner container and the outer housing, for example, a refrigerator and / or freezer or a refrigerator and / or freezer or between the inside and the outside of a door, front of a drawer, lid, etc.

Vorzugsweise ist vorgesehen, dass das Trägerbauteil einen im Umfangsrichtung geschlossenen Raum aufweist, in dem sich das Verstärkungselement befindet. Das Trägerbauteil kann somit beispielsweise als Hohlprofil ausgeführt sein, das vorzugsweise eine längliche Erstreckung aufweist und in dem sich das Verstärkungselement oder die Verstärkungselemente befinden, die vorzugsweise ebenfalls als längliche Elemente ausgebildet sind.It is preferably provided that the carrier component has a circumferentially closed space in which the reinforcing element is located. The support member may thus be embodied, for example, as a hollow profile, which preferably has an elongated extension and in which the reinforcing element or the reinforcing elements are located, which are preferably also designed as elongated elements.

Um eine Wärmeausdehnung des Verstärkungselementes weitgehend unabhängig oder vollständig unabhängig von der Wärmeausdehnung der Wärmeisolation und/oder der umliegenden längen relevanten Bauteile zu erzielen, ist erfindungsgemäß vorgesehen, dass eine Relativbewegung zwischen dem oder den Verstärkungselementen und dem oder den Trägerbauteilen stattfinden kann.In order to achieve a thermal expansion of the reinforcing element largely independently or completely independent of the thermal expansion of the heat insulation and / or the surrounding lengths relevant components, the invention provides that a relative movement between the reinforcing elements and the or the support members can take place.

Kommt es somit beispielsweise zu einer Erwärmung im Bereich der Ausschäumung durch die Vernetzung des Isolationsmaterials, führt dieser Wärmeeintrag zu einer Dimensionsänderung einerseits des Isolationsmaterials selbst und andererseits aller anderen wärmebeaufschlagten Teile. Dies führt jedoch nicht zu Schubspannungen und damit auch nicht zu Bimetall-Effekten, da eine Relativbewegung zwischen dem oder den Verstärkungselementen und dem oder den Trägerbauteilen möglich ist.Thus, if, for example, there is heating in the region of the foaming due to the crosslinking of the insulating material, this heat input leads to a dimensional change on the one hand of the insulating material itself and, on the other hand, of all other heat-stressed parts. However, this does not lead to shear stresses and thus not to bimetallic effects, since a relative movement between the reinforcing elements and the support member (s) is possible.

Eine besonders einfache Anordnung ergibt sich, wenn das oder die Verstärkungselemente lose in dem Trägerbauteil bzw. in dessen Aufnahmeraum liegt. Es werden in diesem Fall somit nur Biegekräfte übertragen, lässt man die Reibungskräfte außer Betracht.A particularly simple arrangement results when the one or more reinforcing elements loosely in the support member or in its receiving space. In this case, therefore, only bending forces are transmitted, leaving the frictional forces out of consideration.

Besonders vorteilhaft ist es, wenn das Verstärkungselement in der Lage ist, Biegekräfte aufzunehmen. Dies bedeutet, dass das Verstärkungselement die Eigenschaft hat, bis zu einem bestimmten Grad Biegebeanspruchungen aufzunehmen, ohne sich dabei merklich zu verformen.It is particularly advantageous if the reinforcing element is able to absorb bending forces. This means that the reinforcing element has the property of absorbing bending stresses to a certain degree without noticeably deforming.

Vorzugsweise besteht das Verstärkungselement aus Metall oder weist Metall auf.Preferably, the reinforcing element is made of metal or has metal.

Das Trägerbauteil selbst hat die Funktion der teilweisen oder vollständigen Trennung des Verstärkungselementes von dem Wärmeisolationsmaterial und muss somit keine besonderen Festigkeitseigenschaften aufweisen. Es genügt daher, wenn die Biegekräfte ausschließlich oder jedenfalls überwiegend durch das oder die Verstärkungselemente aufgenommen werden.The support member itself has the function of partially or completely separating the reinforcing member from the heat insulating material and thus need not have any particular strength properties. It is therefore sufficient if the bending forces are absorbed exclusively or at least predominantly by the one or more reinforcing elements.

Das Trägerbauteil kann beispielsweise aus Kunststoff bestehen oder Kunststoff aufweisen.The support member may for example consist of plastic or plastic.

Vorteilhaft ist es, wenn das Trägerbauteil aus einem Material besteht, dass dasselbe oder ein ähnliches Wärmeausdehungsverhalten wie das Wärmeisolationsmaterial aufweist oder dass der Unterschied im Wärmeausdehnungsverhalten zwischen Wärmeisolationsmaterial und dem Trägerbauteil geringer ist als zwischen dem Wärmeisolationsmaterial und dem Verstärkungselement.It is advantageous if the carrier component is made of a material that has the same or a similar thermal expansion behavior as the heat insulating material or that the difference in thermal expansion behavior between the heat insulating material and the carrier component is less than between the heat insulating material and the reinforcing element.

In einer Ausgestaltung der Erfindung besteht eine feste Verbindung zwischen der Wärmeisolation und dem Trägerbauteil. Im Falle einer Ausschäumung kann diese Ausschäumung somit fest mit der Außenseite des Trägerbauteils in Verbindung stehen. Um Schubspannungen durch unterschiedliche Wärmeausdehnungskoeffizienten und damit Verformungen aufgrund eines Bimetall-Effektes zwischen dem Wärmeisolationsmaterial und dem Trägerbauteil zu verhindern oder möglichst gering zu halten, ist vorgesehen dass in bevorzugter Ausgestaltung der Erfindung das Wärmeausdehnungsverhalten zwischen dem Wärmeisolationsmaterial und dem Trägerbauteil identisch ist oder weitgehend identisch ist, so dass beim Einfluss von Temperaturänderungen keine oder nur geringe Verformungen entstehen, die vernachlässigt werden können bzw. durch das oder die Verstärkungselemente aufgefangen werden können.In one embodiment of the invention, there is a firm connection between the heat insulation and the carrier component. In the case of foaming this foaming can thus be firmly connected to the outside of the support member. In order to prevent or minimize due to different thermal expansion coefficients and thus deformations due to a bimetallic effect between the heat insulating material and the support member is provided that in a preferred embodiment of the invention, the thermal expansion behavior between the heat insulating material and the support member is identical or substantially identical, so that under the influence of temperature changes no or only small deformations occur that can be ignored or can be collected by the or the reinforcing elements.

Das Verstärkungselement und/oder das Trägerbauteil kann eine längliche Form aufweisen, wobei das Verstärkungselement als Hohlprofil oder als Vollprofil ausgebildet sein kann.The reinforcing element and / or the carrier component may have an elongate shape, wherein the reinforcing element may be formed as a hollow profile or as a solid profile.

Das Gerät kann einen Korpus mit zwei Seitenwänden und eine Vorder- und Rückwand oder eine Boden- und Deckwand aufweisen, wobei sich das Verstärkungselement und das Trägerbauteil in sämtlichen der genannten Wände oder nur in einer oder einigen von diesen befinden. Auch ist es denkbar, dass sich das Verstärkungselement und das Trägerbauteil über die gesamte Länge und/oder Breite der Wände oder nur über einen Teilbereich von diesen erstrecken.The apparatus may include a body having two sidewalls and a front and back wall or a bottom and top wall, wherein the reinforcing member and the support member are located in all of said walls or only one or some of them. It is also conceivable for the reinforcing element and the carrier component to extend over the entire length and / or width of the walls or only over a partial area thereof.

Denkbar ist es somit beispielsweise, dass es sich bei dem Gerät um einen Schrank oder um eine Truhe handelt, wobei in sämtlichen Korpuswandungen oder auch nur in einer oder mehreren Korpuswandungen das erfindungsgemäße Verstärkungsprofil und das Trägerbauteil vorliegen. So ist es beispielsweise bei einer Truhe denkbar, das oder die Verstärkungselemente und das oder die Trägerbauteile nur in den Korpusseiten beziehungsweise in den Korpuselementen einzubauen, die zur Verformung neigen. Grundsätzlich ist es jedoch auch denkbar und von der Erfindung mit umfasst, dass in jeder Korpuswand, bei einer Truhe somit in der Vorderwand, in der Rückwand und in den beiden Seitenwänden derartige Verstärkungselemente und Trägerbauteile vorliegen.It is thus conceivable, for example, that the device is a cabinet or a chest, wherein the reinforcement profile according to the invention and the support component are present in all body walls or else only in one or more body walls. So it is conceivable, for example in a chest, to install the or the reinforcing elements and the one or more support members only in the carcass sides or in the carcass elements, which tend to deformation. Basically, it is also conceivable and encompassed by the invention with such that in each cabinet wall, in a chest thus in the front wall, in the rear wall and in the two side walls such reinforcing elements and support components are present.

Die vorliegende Erfindung ist nicht auf den Korpus eines Gerätes beschränkt. Sie kann zusätzlich oder alternativ auch in dem oder den Verschlusselementen des Gerätes, wie beispielsweise in einer Tür oder einem Deckel oder einer Front einer Lade Verwendung finden.The present invention is not limited to the body of a device. It may additionally or alternatively also be used in the closure element (s) of the device, such as in a door or a lid or a front of a drawer.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, dass das Verstärkungselement und/oder das Trägerbauteil ein- oder mehrteilig ausgebildet sind und/oder als umlaufende Elemente ausgebildet sind. So ist es beispielsweise möglich, dass das Trägerbauteil als rechteckiges Profil ausgeführt ist, das umlaufend ausgebildet ist und einen umlaufenden Hohlraum umgibt, in dem ein oder mehrere Verstärkungselemente angeordnet sind, die ebenfalls umlaufend ausgebildet sind.In a further embodiment of the invention, it is provided that the reinforcing element and / or the carrier component are formed in one or more parts and / or are formed as circumferential elements. So it is for example possible that the support member is designed as a rectangular profile, which is formed circumferentially and surrounds a circumferential cavity in which one or more reinforcing elements are arranged, which are also formed circumferentially.

Die Querschnittsformen des Trägerbauteils ist an sich beliebig. Das Trägerbauteil kann im Querschnitt beispielsweise eckig, wie beispielsweise rechteckig, quadratisch oder auch rund ausgeführt sein.The cross-sectional shapes of the carrier component is arbitrary per se. The support member may be made in cross-section, for example, angular, such as rectangular, square or round.

Denkbar ist es, dass das Gerät eine durch seine offene Seite gebildete Ebene aufweist, d.h. bei einer Truhe eine horizontale Ebene und bei einem Schrank eine vertikale Ebene und das sich das Verstärkungselement und das Trägerprofil in dieser Ebene oder parallel zu dieser Ebene erstrecken. Im Falle einer Truhe ist es somit beispielsweise denkbar, dass das Trägerbauteil und das Verstärkungselement horizontal verlaufen und/oder rahmenförmig ausgebildet sind und den gekühltem Raum beispielsweise auf Höhe des Abdeckrahmens, d.h. im oberen Bereich des Gerätes oder auch in einem darunter liegenden Abschnitt umgeben.It is conceivable that the device has a plane formed by its open side, ie in a chest a horizontal plane and a cabinet a vertical plane and extending the reinforcing element and the carrier profile in this plane or parallel to this plane. In the case of a chest, it is thus conceivable, for example, that the carrier component and the reinforcing element are horizontal and / or frame-shaped and surround the cooled space, for example at the height of the cover frame, ie in the upper region of the device or in an underlying section.

Grundsätzlich sind auch mehrere in Höhenrichtung versetzt angeordnete erfindungsgemäße Anordnungen denkbar. Dies bedeutet es können mehrere, im Falle von Truhen übereinander und im Falle von Schränken hintereinander angeordnete Trägerbauteile und Verstärkungselemente angeordnet sein.In principle, a plurality of arrangements arranged in the vertical direction according to the invention are also conceivable. This means that a plurality of carrier components and reinforcing elements arranged one behind the other in the case of chests and in the case of cabinets can be arranged.

Im Falle von Schränken ist es denkbar, dass das Trägerbauteil und das Verstärkungselement die frontseitige Korpusöffnung rahmenartig umgibt, wobei diese im vorderen Bereich oder auch in einem relativ dazu nach hinten versetzten Bereich angeordnet sein kann.In the case of cabinets, it is conceivable that the carrier component and the reinforcing element surrounds the front-side carcass opening in the manner of a frame, wherein this can be arranged in the front region or else in a region displaced to the rear relative thereto.

Die einzelnen Trägerbauteile und Verstärkungselemente können im Falle von Truhen horizontal oder auch schräg oder auch vertikal verlaufen. Dies gilt für schrankartige Kühl- und/oder Gefriergeräte entsprechend.The individual carrier components and reinforcing elements can be horizontal or oblique or even vertical in the case of chests. This applies accordingly to cabinet-type refrigerators and / or freezers.

Um eine möglichst gute Relativbewegung zwischen dem Trägerbauteil und dem Verstärkungselement zu ermöglichen ist es vorteilhaft, wenn der Werkstoff bzw. die Werkstoffe so ausgewählt werden, dass sich ein möglichst geringer Reibungskoeffizient ergibt. Denkbar ist es, das Trägerbauteil als Coextrusionsbauteil auszuführen.In order to enable the best possible relative movement between the carrier component and the reinforcing element, it is advantageous if the material or the materials are selected such that the lowest possible coefficient of friction results. It is conceivable to carry out the carrier component as a coextrusion component.

Die Wahl der oder des Trägerbauteils hängt von der jeweiligen Einbausituation ab. Das Trägerbauteil kann ein- oder auch mehrteilig ausgeführt sein. In bevorzugter Ausgestaltung der Erfindung ist vorgesehen, dass es das Verstärkungselement vollständig bzw. möglichst vollständig von den Isolationsmaterial und insbesondere von dem Schaum trennt.The choice of or the carrier component depends on the particular installation situation. The carrier component can be designed as one or more parts. In a preferred embodiment of the invention, it is provided that it separates the reinforcing element completely or as completely as possible from the insulating material and in particular from the foam.

Dadurch wird das Ziel erreicht, dass eine mögliche Längenänderung durch Wärmeausdehnung beim Verstärkungselement unbedeutend ist und somit vernachlässigt werden kann. Vernachlässigt man die Reibung, treten keine Schubkräfte/Schubspannungen auf, die bei einem festen Verbund mit anderen Bauteilen den unerwünschten Bimetall-Effekt bewirken würden.As a result, the goal is achieved that a possible change in length due to thermal expansion in the reinforcing element is insignificant and thus can be neglected. Neglecting the friction, there are no shear forces / shear stresses that would cause the unwanted bimetal effect in a solid composite with other components.

Wie bereits ausgeführt, ist die vorliegende Erfindung nicht auf den Korpus eines Kühl- und/oder Gefriergeräts beschränkt, sondern umfasst alternativ oder zusätzlich auch dessen Verschlusselement, wie zum Beispiel den Deckel einer Truhe oder die Tür eines Schrankes.As already stated, the present invention is not limited to the body of a refrigerator and / or freezer, but alternatively or additionally includes its closure element, such as the lid of a chest or the door of a cabinet.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, dass es sich bei dem Gerät um eine Kühl- und/oder Gefriertruhe handelt. Diese kann einen Abdeckrahmen aufweisen, der den oberen Abschluss des Korpus bildet und der vorzugsweise umlaufend ausgeführt ist. Das erfindungsgemäße Trägerbauteil kann sich teilweise oder vollständig in dem genannten Abdeckrahmen erstrecken bzw. als einteiliger Bestandteil des Abdeckrahmens ausgeführt sein. Denkbar ist es, dass das Trägerbauteil umlaufend ausgeführt ist oder sich nur in Teilabschnitten des Abdeckrahmens erstreckt.In a further embodiment of the invention, it is provided that the device is a refrigerator and / or chest freezer. This may have a cover frame, which forms the upper end of the body and is preferably carried out circumferentially. The carrier component according to the invention may extend partially or completely in the said cover frame or be embodied as a one-piece component of the cover frame. It is conceivable that the support member is performed circumferentially or extends only in sections of the cover.

Weitere Einzelheiten und Vorteile der Erfindung werden anhand eines in der Zeichnung dargestellten Ausführungsbeispiel erläutert.Further details and advantages of the invention will be explained with reference to an embodiment shown in the drawing.

Die einzige Figur zeigt in einer Querschnittsansicht einen Teilbereich des Korpus einer Kühl- und oder Gefriertruhe.The single FIGURE is a cross-sectional view of a portion of the body of a refrigerator and / or freezer.

Mit dem Bezugszeichen 10 ist die aus Metall bestehende Außenwand der Truhe gekennzeichnet.The reference numeral 10, the existing metal outer wall of the chest is marked.

Das Bezugszeichen 20 kennzeichnet den Innenbehälter, der beispielsweise aus Kunststoff besteht.The reference numeral 20 denotes the inner container, which consists for example of plastic.

Wie dies aus der Figur ersichtlich ist, befindet sich zwischen dem Innenbehälter 20 und der Außenwand 10 eine Ausschäumung 30, die aus einem PU-Schaum besteht.As can be seen from the figure, located between the inner container 20 and the outer wall 10, a foaming 30, which consists of a PU foam.

Wie dies aus der Figur ersichtlich ist, erstreckt sich innerhalb des Schaumes 30 in horizontaler Richtung ein aus Kunststoff bestehendes Trägerbauteil 40 , das als Hohlprofil ausgeführt ist. Dieses Trägerbauteil 40 ist in seinem gesamten Umfang von Schaum 30 umgeben, d.h. vollständig eingebettet.As can be seen from the figure, extending within the foam 30 in the horizontal direction, a plastic carrier component 40, the is designed as a hollow profile. This support member 40 is surrounded in its entire periphery by foam 30, that is completely embedded.

Im Inneren dieses Profils 40 befindet sich ein Verstärkungselement 50, das als Metallteil ausgeführt ist und die Form eines Hohlprofils aufweist. In dem hier dargestellten Ausführungsbeispiel ist der Hohlraum, der durch das Trägerbauteil 40 gebildet wird größer als die Außenabmessung des Verstärkungselementes 50, so dass eine Relativbewegung zwischen beiden Elementen möglich ist. Das Verstärkungselement 50 ist somit lose in dem Hohlraum des Trägerbauteils 40 aufgenommen und liegt auf dessen Boden auf.Inside this profile 40 is a reinforcing element 50, which is designed as a metal part and has the shape of a hollow profile. In the embodiment shown here, the cavity formed by the support member 40 is larger than the outer dimension of the reinforcing member 50, so that a relative movement between the two elements is possible. The reinforcing element 50 is thus loosely received in the cavity of the support member 40 and rests on the bottom thereof.

Kommt es nun zu einer temperaturbedingten Wärmeausdehnung, kann die Wärmeausdehnung des Verstärkungselements 50 unabhängig von der Wärmeausdehnung des Schaums 30 bzw. anderer Bauteile des Gerätes, die mit dem Schaum in Verbindung stehen erfolgen, da durch das Trägerbauteil 40 eine Entkoppelung stattfindet.If a temperature-induced thermal expansion now occurs, the thermal expansion of the reinforcing element 50 can take place independently of the thermal expansion of the foam 30 or other components of the device that are in contact with the foam, since decoupling takes place by the carrier component 40.

Das Verstärkungselement 50 kann somit Biegekräfte aufnehmen und damit zu einer mechanischen Stabilisierung des gesamten Korpus und/oder Verschlußelementes beitragen. Es trägt jedoch aufgrund seiner losen Anordnung in dem Trägerbauteil nicht zu einer Verformung bei. Ein Bimetall-Effekt unter Beteiligung des Verstärkungselementes 50 kann somit nicht auftreten.The reinforcing element 50 can thus absorb bending forces and thus contribute to a mechanical stabilization of the entire body and / or closure element. However, it does not contribute to deformation due to its loose arrangement in the support member. A bimetallic effect involving the reinforcing element 50 can thus not occur.

Um diesen auch möglichst zwischen dem Trägerbauteil 40 und dem Schaum 30 zu verhindern, ist vorzugsweise vorgesehen, dass das Wärmeausdehnungsverhalten zwischen Schaum 30 und Trägerbauteil 40 gleich oder im wesentlichen gleich ist. Kommt es gleichwohl zu einem Bimetall-Effekt zwischen Schaum 30 und Trägerbauteil 40 kann dieser bzw. die durch diesen bedingten Kräfte durch das Verstärkungselement 50 aufgenommen werden, so dass es zu keiner Verformung kommt.In order to prevent this also between the support member 40 and the foam 30 as possible, it is preferably provided that the thermal expansion behavior between the foam 30 and support member 40 is equal or substantially equal. If, nevertheless, a bimetallic effect occurs between the foam 30 and the carrier component 40, this or the forces caused by this can be absorbed by the reinforcing element 50 so that no deformation takes place.

Eine bevorzugte Ausgestaltung der Erfindung ist der Einsatz in Form einer Truhe, insbesondere einer Supermarkttruhe.A preferred embodiment of the invention is the use in the form of a chest, in particular a supermarket chest.

Um die Reibung zwischen dem Trägerbauteil 40 und dem Verstärkungselement 50 möglichst gering zu halten, können entsprechende Materialpaarungen gewählt werden, wie beispielsweise Metall und KunststoffIn order to keep the friction between the carrier component 40 and the reinforcing element 50 as low as possible, corresponding material pairings can be selected, such as, for example, metal and plastic

Alternativ oder zusätzlich ist es denkbar, die Innenseite des Trägerbauteils 40 und/oder die Außenseite des Verstärkungselementes 50 mit einer Beschichtung zu versehen, die die Reibung zwischen den beiden Elementen gegenüber dem Zustand oder Beschichtung verringert.Alternatively or additionally, it is conceivable to provide the inside of the carrier component 40 and / or the outside of the reinforcing element 50 with a coating which reduces the friction between the two elements relative to the state or coating.

Die in der Figur dargestellte Anordnung des Verstärkungselementes 50 und des Trägerbauteils 40 kann sich umlaufend um den Korpus herum, d.h. um den gekühltem Raum herum erstrecken. Denkbar ist es jedoch auch, diese Anordnung nur partiell einzusetzen, beispielsweise auf dem verformungsgefährdeten Seiten eines Kühl- und/oder Gefriergerätes.The arrangement of reinforcement member 50 and support member 40 shown in the figure may be circumferentially around the body, i. extend around the chilled room. It is also conceivable, however, to use this arrangement only partially, for example on the deformation-prone sides of a refrigerator and / or freezer.

Claims (9)

  1. A refrigeration and/or freezer device having at least one housing, which at least sectionally surrounds at least one chamber cooled in operation of the device, wherein the housing and/or the at least one closure element thereof comprises a heat insulation material (30) and wherein the housing and/or the closure element thereof further comprises at least one reinforcement member (50) for mechanical stabilization of the housing or the closure element, characterized in that the reinforcement member is sectionally or completely not in connection with the heat insulation material but loosely accommodated in at least one support component (40), which is per se accommodated in the heat insulation material, wherein the reinforcement member is accommodated in the support component in such a way that it is moveable relative to this component, and in that the reinforcement member has an elongated shape and is formed as a hollow profile.
  2. The refrigeration and/or freezer device according to claim 1, characterized in that the heat insulation material is a foamed material, preferably polyurethane foam, and/or in that the heat insulation material extends between the internal container and the external housing of the device.
  3. The refrigeration and/or freezer device according to claim 1 or 2, characterized in that the support component comprises a chamber closed in the circumferential direction of the component, with the reinforcement member located in said chamber.
  4. The refrigeration and/or freezer device according to one of the preceding claims, characterized in that the reinforcement member is suitable to receive bending forces and/or in that the reinforcement member comprises metal or consists of metal and/or characterized in that the support component consists of plastic or comprises plastic.
  5. The refrigeration and/or freezer device according to one of the preceding claims, characterized in that the support component consists of a material that has the same or a similar heat expansion characteristic as the heat insulation material or in that the difference in the heat expansion characteristics between the heat insulation material and the support component is less than between the heat insulation material and the reinforcement element.
  6. The refrigeration and/or freezer device according to one of the preceding claims, characterized in that the device comprises a body with two side walls and a front- and back wall or a bottom and top wall, and in that the reinforcement member and the support component are located in all of the named walls or in only one or some of these walls and/or in that the reinforcement element and the support component extend over the entire length and/or width of the walls or only over a sub-region of these.
  7. The refrigeration and/or freezer device according to one of the preceding claims, characterized in that the reinforcement element and/or the support component is formed in one or multiple pieces and/or is formed as circumferential elements.
  8. The refrigeration and/or freezer device according to one of the preceding claims, characterized in that the device comprise a plane formed through its open side of the body and in that the reinforcement member and the support profile extend in this plane or parallel to thus plane and/or in the plane of the closure element.
  9. The refrigeration and/or freezer device according to one of the preceding claims, characterized in that the device is formed as a chest-type refrigerator and/or freezer, which has a cover frame arranged at the top and in that the support component is completely or partially located in the cover frame.
EP13001414.5A 2012-03-30 2013-03-19 Refrigeration and/or freezer device Active EP2645026B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012006586 2012-03-30
DE102012009452A DE102012009452A1 (en) 2012-03-30 2012-05-11 Fridge and / or freezer

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EP2645026A2 EP2645026A2 (en) 2013-10-02
EP2645026A3 EP2645026A3 (en) 2016-02-24
EP2645026B1 true EP2645026B1 (en) 2017-09-20

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DE (1) DE102012009452A1 (en)
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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2518673A (en) * 1945-05-14 1950-08-15 Seeger Refrigerator Co Breaker strip construction
GB1244271A (en) * 1969-04-22 1971-08-25 Gen Motors Ltd Fixing device
US4771532A (en) * 1988-01-27 1988-09-20 General Electric Company Method of assembling a refrigerator
CA2252299C (en) * 1998-10-30 2006-06-13 Camco Inc. Refrigerator door construction
DE102005057150A1 (en) * 2005-11-30 2007-06-06 BSH Bosch und Siemens Hausgeräte GmbH Refrigerator or freezer with reinforcement frame
JP2007327734A (en) * 2006-05-08 2007-12-20 Wako Seisakusho:Kk Cold insulation storage
JP5513855B2 (en) * 2009-11-11 2014-06-04 株式会社東芝 refrigerator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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EP2645026A3 (en) 2016-02-24
EP2645026A2 (en) 2013-10-02
DE102012009452A1 (en) 2013-10-02
ES2653699T3 (en) 2018-02-08

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