EP1238237A1 - Thermally insulating wall - Google Patents

Thermally insulating wall

Info

Publication number
EP1238237A1
EP1238237A1 EP00981228A EP00981228A EP1238237A1 EP 1238237 A1 EP1238237 A1 EP 1238237A1 EP 00981228 A EP00981228 A EP 00981228A EP 00981228 A EP00981228 A EP 00981228A EP 1238237 A1 EP1238237 A1 EP 1238237A1
Authority
EP
European Patent Office
Prior art keywords
heat
insulating wall
vacuum
cover layers
cover
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.)
Withdrawn
Application number
EP00981228A
Other languages
German (de)
French (fr)
Inventor
Richard Horn
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
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1238237A1 publication Critical patent/EP1238237A1/en
Withdrawn legal-status Critical Current

Links

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
    • F25D23/06—Walls
    • F25D23/062—Walls defining a cabinet
    • F25D23/063—Walls defining a cabinet formed by an assembly of panels
    • 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
    • F25D2201/14—Insulation with respect to heat using subatmospheric pressure
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/40—Refrigerating devices characterised by electrical wiring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/231—Filled with gas other than air; or under vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322—Composite web or sheet

Definitions

  • the invention relates to a heat-insulating wall with two spaced-apart, at least substantially vacuum-tight cover layers, which are connected to one another in a vacuum-tight manner by means of a connecting profile to form an evacuable space filled with heat insulation material, at least one opening being used to bridge the space the opening leading into the cover layers is provided for receiving lines or the like.
  • the invention has for its object to provide a implementation in a heat-insulating wall according to the preamble of claim 1 with simple design measures, in which the disadvantages of the prior art are avoided.
  • the implementation is at least largely formed by a material deformation of one of the cover layers, which at least approximates to the other cover layer by the material deformation, and is connected to the latter in a vacuum-tight manner at least all around the openings.
  • the proposal according to the invention not only eliminates an additional component, as a result of which the manufacturing outlay is reduced, but at the same time increases the process reliability with regard to the vacuum tightness in the implementation by avoiding additional process steps, caused by the further connection points which are required in principle according to the prior art .
  • the creation of the implementation by means of a corresponding material deformation of the cover surfaces also ensures a material homogeneity at least as far as possible corresponding to the material homogeneity of the cover surfaces at the location of the implementation, which according to the prior art is not guaranteed by the component additionally required in this case.
  • additional shaping or reshaping processes for the production of device-specific designs such as recesses for line receptacles or the like can be carried out inexpensively.
  • the leadthrough is formed by a material deformation provided on both cover surfaces, which are connected to one another in vacuum-tight fashion at their mutually facing ends provided with an opening.
  • each of the material deformations formed on both cover layers has at least approximately a depth that is half the width of the distance between the cover layers.
  • the material deformation is cup-like with a cup bottom which has the opening of the deformed cover layer and with the second
  • Cover layer is connected vacuum-tight.
  • Cover surfaces in the area around the bushing point is achieved and at the same time a flat, deformation-resistant support of the two cover surfaces against each other is achieved by the cup bottoms of the cover surfaces lying against one another.
  • a refrigeration appliance, a dishwasher, a stove, a washing machine or the like, with a heat-insulating wall, such as a heat-insulating housing, is particularly advantageous with regard to the introduction of bushings in heat-insulating walls based on vacuum insulation technology in household appliances Heat-insulating door, a heat-insulating muffle, a rinsing or suds container formed if it is provided according to a last preferred embodiment of the object of the invention that the heat-insulating wall is designed according to one of claims 1 to 4.
  • Wall with a cup-like material deformation provided on one of its top surfaces to produce a feedthrough, in a sectional view
  • FIG. 2 shows a section of a second embodiment variant of a heat-insulating wall with cup-like material deformation provided on both of its top surfaces to produce a bushing, in a sectional view.
  • FIG. 1 shows a section of a simplified schematic illustration of a heat-insulating wall 10 based on vacuum insulation technology, for example for the construction of a cooling device housing or a cooling device door, which has two spaced-apart cover layers 11 and 12, for example made of a stainless steel sheet or a corrosion-protected
  • cover layers 11 and 12 Steel plate with a material thickness of about 0.4 mm or formed from a metal-coated or laminated plastic board.
  • cover layers 11 and 12 have a material deformation 14 in the form of a cup which is introduced into the cover layer 12 in the form of a non-cutting material and is formed in the form of a cup in order to produce a feedthrough 13, such as, for example, a line bushing or an inflow or outflow opening
  • the cup bottom 16 is from its Outside facing away from the bowl space up to the inside of the cover layer 11 on the vacuum insulation side in order to support the two cover layers 11 and 12 against one another, the cover layer 11, like the bowl bottom 16, being provided with an opening 18 which is at least approximately congruent with the opening 17 and together with this and
  • the passage 13 forms the cup-like passage 14 in the cover layer 12.
  • a weld seam 19 is provided all around the contour of the openings 17 and 18
  • the spaced-apart cover layers 11 and 12 delimit, together with a connection profile (not shown) arranged on their free edges, an evacuable intermediate space 20, which can be evacuated with heat insulation material 21 for supporting the cover surfaces 11 and 12 in the evacuated state against those acting on the cover layers 11 and 12 atmospheric pressure is filled
  • Corrosion-resistant steel plate with a material thickness of 0.4 mm or cover layers 31 formed from a metal-coated or laminated plastic plate, each of which is used to create a passage 32, for example, as an inflow or outflow opening or also as an opening for cables or the like, with a material deformation 33 are provided in the form of a bowl.
  • the bowl-shaped material deformation 33 has a closed-walled bowl wall 34 and a bowl bottom 35 which is at least largely flat, in which e is introduced into the opening 36 in the cover layers 31 immediately after the non-cutting shaping of the material deformation 33, so that the openings 36 in the cup base 35 are congruently opposed to one another.
  • the material deformations 33 in the cover layers 31 are directed towards one another and their depth t is such dimensioned such that the mutually facing outer sides of the cup base 35 occupy half the distance of the spaced-apart cover layers 31.
  • the cup bases 35 lying against one another are connected to one another with a weld seam 37 which is arranged all around the openings 36, which together with the cup-like material deformation 33 the passage 32 through the heat insulating wall 30 forms.
  • This has at the free ends of its cover layers 31 for a vacuum-tight connection of the cover layers 31, a connection profile, not shown, which, together with the cover layers 31, encloses an evacuable space 38.
  • the latter is filled with evacuable heat insulation material 39 which supports the two cover layers 31 against one another.

Landscapes

  • 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)
  • Thermal Insulation (AREA)
  • Refrigerator Housings (AREA)
  • Building Environments (AREA)

Abstract

The invention relates to a thermally insulating wall (10), based upon a vacuum insulation technique, in which the cavity (20) is bridged by a duct (13), to accommodate cables or similar. Said ducts are produced by means of ducting bodies with flange-like inserts. According to the invention, the duct (13) is created by means of a material deformation (14), on at least one of the outer layers (11, 12), whereby the material deformation (14), at least essentially, reaches the other outer layer (11, 12) and is linked in a vacuum tight manner (19) with said other layer.

Description

Wärmeisolierende Wandung Insulating wall
Die Erfindung betrifft eine warmeisolierende Wandung mit zwei zueinander beabstande- ten, zumindest im wesentlichen vakuumdicht ausgebildeten Deckschichten, welche über ein Verbindungsprofil unter Bildung eines evakuierbaren, mit Wärmeisolationsmaterial verfüllten Zwischenraums miteinander vakuumdicht verbunden sind, wobei zur Überbrük- kung des Zwischenraums wenigstens eine in Durchbrüchen an den Deckschichten mündende Durchführung zur Aufnahme von Leitungen oder dergleichen vorgesehen ist.The invention relates to a heat-insulating wall with two spaced-apart, at least substantially vacuum-tight cover layers, which are connected to one another in a vacuum-tight manner by means of a connecting profile to form an evacuable space filled with heat insulation material, at least one opening being used to bridge the space the opening leading into the cover layers is provided for receiving lines or the like.
Bei auf Vakuumisolationstechnik basierenden wärmeisolierenden Wandungen ist es zur Herbeiführung von Durchführungen an diesen Wandungen bekannt, separate Durchführungskörper anzuwenden. Diese werden zur Herstellung einer solchen Durchführung in den Zwischenraum zwischen den Deckflächen eingebracht und bilden zusammen mit in die Deckflächen eingebrachten Durchbrüchen eine die Wandungstärke der wärmeisolierenden Wandung überbrückende Durchgangsöffnung zum Einbringen von elektrischen oder kältetechnischen Leitungen oder dergleichen. Zur prozeßsicheren Herstellung einer vakuumdichten Verbindung zwischen dem Durchführungskörper und den Deckflächen ist ersterer an seinen Stirnseiten mit flanschartigen Vorsprüngen versehen, mit welchen der Durchführungskörper vakuumseitig an den Deckflächen vakuumdicht verbunden ist. Durch einen derartigen Aufbau zur Ausbildung einer Durchführung wurde zwar eine hohe Prozeßsicherheit bezüglich der Vakuumdichtheit an der Schnittstelle zwischen demIn the case of heat-insulating walls based on vacuum insulation technology, it is known to use bushings on these walls to produce bushings. To produce such a bushing, these are introduced into the intermediate space between the cover surfaces and, together with openings made in the cover surfaces, form a passage opening bridging the wall thickness of the heat-insulating wall for the introduction of electrical or refrigeration lines or the like. For the process-reliable production of a vacuum-tight connection between the lead-through body and the cover surfaces, the front of the former is provided with flange-like projections with which the lead-through body is vacuum-tightly connected to the cover surfaces. Such a structure for the implementation of a implementation has a high process reliability with regard to the vacuum tightness at the interface between the
Durchführungskörper und den Deckflächen erreicht, jedoch zieht eine solche Lösung nicht nur den Umstand nach sich, daß zur Herstellung der Durchführung ein zusätzliches Teil erforderlich ist, sondern gleichzeitig ist der Fertigungsaufwand, insbesondere hervorgerufen durch die Positionierung des Durchführungskörpers zu den Deckflächen der wärmeisolierenden Wandung, nicht unerheblich. Darüber hinaus war es aufgrund derBushing body and the cover surfaces reached, but such a solution not only entails the fact that an additional part is required to manufacture the bushing, but at the same time the manufacturing effort, in particular caused by the positioning of the bushing body to the cover surfaces of the heat-insulating wall, is not irrelevant. In addition, it was due to the
Maßanforderungen an dem Durchführungskörper erforderlich, daß dieser in kostenintensiver Weise durch spanabhebende Fertigungsverfahren herzustellen ist. Der Erfindung liegt die Aufgabe zugrunde, bei einer wärmeisolierenden Wandung gemäß dem Oberbegriff des Anspruches 1 mit einfachen konstruktiven Maßnahmen eine Durchführung zu schaffen, bei welcher die Nachteile des Standes der Technik vermieden sind.Dimensional requirements on the lead-through body required that it be manufactured in a cost-intensive manner by machining manufacturing processes. The invention has for its object to provide a implementation in a heat-insulating wall according to the preamble of claim 1 with simple design measures, in which the disadvantages of the prior art are avoided.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die Durchführung zumindest weitestgehend durch eine Materialverformung einer der Deckschichten gebildet ist, welche durch die Materialverformung wenigstens annähernd an die andere Deckschicht herangeführt, und mit dieser vakuumdicht zumindest umlaufend um die Durchbrüche, verbunden ist.This object is achieved according to the invention in that the implementation is at least largely formed by a material deformation of one of the cover layers, which at least approximates to the other cover layer by the material deformation, and is connected to the latter in a vacuum-tight manner at least all around the openings.
Durch den erfindungsgemäßen Vorschlag entfällt nicht nur ein zusätzliches Bauteil, wodurch sich der Herstellaufwand reduziert, sondern gleichzeitig die Prozeßsicherheit im Hinblick auf die Vakuumdichtheit an der Durchführung durch die Vermeidung zusätzlicher Prozeßschritte, hervorgerufen durch die nach dem Stand der Technik prinzipbedingt er- forderlichen weiteren Verbindungsstellen erhöht. Die Schaffung der Durchführung durch eine entsprechende Materialverformung der Deckflächen gewährleistet auch am Ort der Durchführung eine der Materialhomogenität der Deckflächen zumindest weitestgehend entsprechende Materialhomogenität, welche nach dem Stand der Technik durch das in diesem Fall zusätzlich erforderliche Bauteil nicht gewährleistet ist. Im Rahmen der Her- Stellung der Durchführung mit Hilfe einer Materiaiverformung an den Deckflächen lassen sich gleichzeitig zusätzliche Verform- bzw. Umformvorgänge zur Herstellung von gerätespezifisch notwendigen Gestaltungen wie Vertiefungen zur Leitungsaufnahme oder dergleichen kostengünstig vornehmen.The proposal according to the invention not only eliminates an additional component, as a result of which the manufacturing outlay is reduced, but at the same time increases the process reliability with regard to the vacuum tightness in the implementation by avoiding additional process steps, caused by the further connection points which are required in principle according to the prior art , The creation of the implementation by means of a corresponding material deformation of the cover surfaces also ensures a material homogeneity at least as far as possible corresponding to the material homogeneity of the cover surfaces at the location of the implementation, which according to the prior art is not guaranteed by the component additionally required in this case. In the course of the production of the implementation with the aid of a material deformation on the cover surfaces, additional shaping or reshaping processes for the production of device-specific designs such as recesses for line receptacles or the like can be carried out inexpensively.
Nach einer bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß die Durchführung durch eine an beiden Deckflächen vorgesehene Materiaiverformung gebildet ist, welche an ihren einander zugewandten, mit einem Durchbruch ausgestatteten Enden vakuumdicht miteinander verbunden sind.According to a preferred embodiment of the subject matter of the invention, it is provided that the leadthrough is formed by a material deformation provided on both cover surfaces, which are connected to one another in vacuum-tight fashion at their mutually facing ends provided with an opening.
Infolge der an beiden Deckflächen vorgenommenen Materialverformung ist einerseits die zur Herstellung der Verformung notwendige Verformungskraft deutlich reduziert, andererseits eine zwangsläufig beim Verformungsvorgang der Deckflächen auftretende Wandstärkenschwächung deutlich reduziert. Ferner ist durch die in den evakuierten Zwischenraum ragenden Materialverformungen der beiden Deckflächen auf einfache Weise die Möglichkeit geschaffen, diese gegeneinander abzustützen und vakuumdicht unmittelbar am Ort der Durchführung miteinander zu verbinden, wobei für den Fall, daß die Deckflächen aus Edelstahl oder korrosionsgeschütztem Stahlblech bestehen, die Verschweißung mittels eines Strahlschweißverfahrens durch die Materialhomogenität im Verbindungsbereich besonders günstig beeinflußt ist. Ein besonderer Vorzug ergibt sich auch noch daraus, daß die Durchbrüche in die Deckflächen unmittelbar im Anschluß an deren Verformung, demzufolge in einen derselben Positionslage auf dem Bearbeitungswerkzeug und somit äußerst positionsgenau einbringbar sind.As a result of the material deformation carried out on both cover surfaces, on the one hand the deformation force required to produce the deformation is significantly reduced, and on the other hand a wall thickness weakening which necessarily occurs during the deformation process of the cover surfaces is significantly reduced. Furthermore, due to the material deformations of the two cover surfaces projecting into the evacuated space, it is simple created the possibility to support them against each other and to connect them vacuum-tight directly at the place of implementation, whereby in the event that the cover surfaces consist of stainless steel or corrosion-protected steel sheet, the welding by means of a beam welding process is particularly favorably influenced by the material homogeneity in the connection area. A particular advantage also arises from the fact that the openings in the cover surfaces immediately after their deformation, and consequently in the same position on the processing tool, and thus can be introduced in an extremely precise position.
Gemäß einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß jede der an beiden Deckschichten ausgebildeten Materialverformungen zumindest annähernd eine die halbe Breite des Abstandes der Deckschichten aufweisende Tiefe besitzen.According to a next preferred embodiment of the subject matter of the invention, it is provided that each of the material deformations formed on both cover layers has at least approximately a depth that is half the width of the distance between the cover layers.
Hierdurch sind nicht nur die Tiefziehkräfte vermindert, sondern auch die Wandstärkeneinschnürungen aufgrund des Tiefziehens gering gehalten.As a result, not only are the deep-drawing forces reduced, but the constrictions in wall thickness due to the deep-drawing are also kept low.
Nach einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß die Materialverformung napfähnlich mit einem Napfboden ausgebildet ist, welcher den Durchbruch der verformten Deckschicht aufweist und mit der zweitenAccording to a next preferred embodiment of the object of the invention, it is provided that the material deformation is cup-like with a cup bottom which has the opening of the deformed cover layer and with the second
Deckschicht vakuumdicht verbunden ist.Cover layer is connected vacuum-tight.
Durch die napfähnliche Ausbildung der Materialverformung ist durch den Napfboden eine flächige Abstützung der beiden Deckflächen an der Durchführungsstelle geschaffen, wo- durch mit äußerst hoher Prozeßsicherheit eine vakuumdichte Verbindung der beidenDue to the bowl-like design of the material deformation, a flat support of the two cover surfaces at the lead-through point is created by the bowl bottom, thereby providing a vacuum-tight connection of the two with extremely high process reliability
Deckflächen im Bereich um die Durchführungsstelle erzielt ist und dabei gleichzeitig durch die gegeneinander anliegenden Napfböden der Deckflächen eine flächige, verformungswiderstandsfähige Abstützung der beiden Deckflächen gegeneinander erzielt ist.Cover surfaces in the area around the bushing point is achieved and at the same time a flat, deformation-resistant support of the two cover surfaces against each other is achieved by the cup bottoms of the cover surfaces lying against one another.
Besonders vorteilhaft im Hinblick auf die Einbringung von Durchführungen in auf Vakuumisolationstechnik basierenden wärmeisolierenden Wandungen bei Haushaltsgeräten ist ein Kältegerät, ein Geschirrspüler, ein Herd, eine Waschmaschine oder dergleichen, mit einer wärmeisolierenden Wandung, wie einem wärmeisolierenden Gehäuse, einer wärmeisolierenden Tür, eine wärmeisolierend ausgebildete Herdmuffel, einem Spül- oder Laugenbehälter ausgebildet, wenn nach einer letzten bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß die wärmeisolierende Wandung nach einem der Ansprüche 1 bis 4 ausgebildet ist.A refrigeration appliance, a dishwasher, a stove, a washing machine or the like, with a heat-insulating wall, such as a heat-insulating housing, is particularly advantageous with regard to the introduction of bushings in heat-insulating walls based on vacuum insulation technology in household appliances Heat-insulating door, a heat-insulating muffle, a rinsing or suds container formed if it is provided according to a last preferred embodiment of the object of the invention that the heat-insulating wall is designed according to one of claims 1 to 4.
Die Erfindung ist in der nachfolgenden Beschreibung anhand von zwei in der beigefügten Zeichnung vereinfacht dargestellten Ausführungsbeispielen erläutert.The invention is explained in the following description with reference to two exemplary embodiments shown in simplified form in the accompanying drawing.
Es zeigen:Show it:
Fig. 1 ausschnittsweise eine erste Ausführungsform einer wärmeisolierenden-1 a detail of a first embodiment of a heat-insulating
Wandung mit einer an einer ihrer Deckflächen vorgesehenen napfähnlichem Materialverformung zur Erzeugung einer Durchführung, in Schnittdarstellung, undWall with a cup-like material deformation provided on one of its top surfaces to produce a feedthrough, in a sectional view, and
Fig. 2 ausschnittsweise eine zweite Ausführungsvariante einer wärmeisolierenden Wandung mit an beiden ihrer Deckflächen vorgesehenen napfähnlichen Materialverformung zur Erzeugung einer Durchführung, in Schnittdarstellung.2 shows a section of a second embodiment variant of a heat-insulating wall with cup-like material deformation provided on both of its top surfaces to produce a bushing, in a sectional view.
Gemäß Fig. 1 ist ausschnittsweise in vereinfachter schematischer Darstellung eine auf Vakuumisolationstechnik basierende, beispielsweise zum Aufbau eines Kühigerätege- häuses oder einer Kühlgerätetür dienende wärmeisolierende Wandung 10 gezeigt, welche zwei beabstandet zueinander angeordnete Deckschichten 11 und 12 aufweist, wel- ehe beispielsweise aus einer Edelstahlblechplatine oder einer korrosionsgeschützten1 shows a section of a simplified schematic illustration of a heat-insulating wall 10 based on vacuum insulation technology, for example for the construction of a cooling device housing or a cooling device door, which has two spaced-apart cover layers 11 and 12, for example made of a stainless steel sheet or a corrosion-protected
Stahlblechplatine mit einer Materialstärke von ca. 0,4 mm oder aus einer metallbeschichteten bzw. laminierten Kunststoffplatine geformt sind. Von den Deckschichten 11 und 12 besitzt letztere zur Erzeugung einer Durchführung 13, wie beispielsweise eine Leitungsdurchführung oder einer Zufluß- bzw. Abflußöffnung eine in Form eines Napfes ausgebil- dete spanlos in die Deckschicht 12 eingebrachte Materialverformung 14 in Form einesSteel plate with a material thickness of about 0.4 mm or formed from a metal-coated or laminated plastic board. Of the cover layers 11 and 12, the latter has a material deformation 14 in the form of a cup which is introduced into the cover layer 12 in the form of a non-cutting material and is formed in the form of a cup in order to produce a feedthrough 13, such as, for example, a line bushing or an inflow or outflow opening
Napfes mit einer Napfwandung 15 und einem zumindest weitestgehend ebenflächig ausgebildeten Napfboden 16 mit einem Durchbruch 17. Der Napfboden 16 ist mit seiner vom Napfraum abgewandten Außenseite bis an die vakuumisolationsseitige Innenseite der Deckschicht 11 zur Abstutzung der beiden Deckschichten 11 und 12 gegeneinander herangeführt, wobei die Deckschicht 11 wie der Napfboden 16 mit einem Durchbruch 18 versehen ist, welcher dem Durchbruch 17 zumindest annähernd deckungsgleich gegenüberliegt und zusammen mit diesem und dem napfartigen Durchzug 14 in der Deckschicht 12 die Durchfuhrung 13 bildet Zur vakuumdichten Verbindung der Deckschichten 11 und 12 im Bereich der Durchfuhrung 13 ist eine umlaufend um die Kontur der Durchbruche 17 und 18 angeordnete Schweißnaht 19 vorgesehenCups with a cup wall 15 and an at least largely flat cup bottom 16 with an opening 17. The cup bottom 16 is from its Outside facing away from the bowl space up to the inside of the cover layer 11 on the vacuum insulation side in order to support the two cover layers 11 and 12 against one another, the cover layer 11, like the bowl bottom 16, being provided with an opening 18 which is at least approximately congruent with the opening 17 and together with this and The passage 13 forms the cup-like passage 14 in the cover layer 12. For the vacuum-tight connection of the cover layers 11 and 12 in the area of the passage 13, a weld seam 19 is provided all around the contour of the openings 17 and 18
Die zueinander beabstandeten Deckschichten 11 und 12 umgrenzen zusammen mit einem an ihren freien Randern angeordneten, nicht dargestellten Verbindungsprofil, einen evakuierbaren Zwischenraum 20, welcher mit evakuierbarem Warmeisolationsmateπal 21 zur Abstutzung der Deckflachen 11 und 12 im evakuierten Zustand gegen den auf die Deckschichten 11 und 12 wirkenden atmosphärischen Druck verfullt istThe spaced-apart cover layers 11 and 12 delimit, together with a connection profile (not shown) arranged on their free edges, an evacuable intermediate space 20, which can be evacuated with heat insulation material 21 for supporting the cover surfaces 11 and 12 in the evacuated state against those acting on the cover layers 11 and 12 atmospheric pressure is filled
Fig 2 zeigt in vereinfachter schematischer Darstellung eine zweite Ausfuhrungsvariante einer auf Vakuumisolationstechnik basierenden warmeisoiierenden Wandung 30 zur Verwendung in einem Kaltegerategehause, einer Kaltegeratetur, einer Herdmuffel oder einem Laugenbehalter oder dergleichen Die warmeisolierende Wandung 30 besitzt zwei zueinander beabstandete, beispielsweise aus einer Edelstahlblechplatine oder einer kor- rosionsgeschutzten Stahlbiechplatine mit einer Matenalstarke von 0,4 mm oder aus einer metallbeschichteten bzw laminierten Kunststoffplatine gebildete Deckschichten 31 , von denen jede zur Schaffung einer beispielsweise als Zufluß- oder Abflußöffnung oder aber auch als Öffnung für Kabel oder dergleichen dienenden Durchfuhrung 32 mit einer Mate- πalverformung 33 in Form eines Napfes versehen sind Die napfahnliche Matenalverfor- mung 33 besitzt eine geschlossenwandige Napfwandung 34 und einen zumindest weitestgehend ebeπflachig ausgebildeten Napfboden 35, in welchen ein Durchbruch 36 unmittelbar im Anschluß an die spanlose Einformung der Materialverformung 33 in die Deckschichten 31 eingebracht ist, so daß die Durchbruche 36 in den Napfboden 35 ein- ander kongruent gegenüberliegen Die Materialverformungen 33 in den Deckschichten 31 sind gegeneinander gerichtet und in ihrer Tiefe t derart bemessen, daß die einander zugewandten Außenseiten des Napfbodens 35 den halben Abstand der zueinander beabstandeten Deckschichten 31 einnimmt Die gegeneinander anliegenden Napfboden 35 sind miteinander mit einer Schweißnaht 37 verbunden, welche umlaufend um die Durch- bruche 36 angeordnet ist, welche zusammen mit der napfartigen Mateπalverformung 33 die Durchführung 32 durch die wärmeisolierende Wandung 30 bildet. Diese weist an den freien Enden ihrer Deckschichten 31 zur vakuumdichten Verbindung der Deckschichten 31 ein nicht gezeigtes Verbindungsprofil auf, welches zusammen mit den Deckschichten 31 einen evakuierbaren Zwischenraum 38 umschließt. Dieser ist zur Abstützung der Deckschichten 31 im evakuierten Zustand des Zwischenraumes 38 gegen den atmosphärischen Druck mit evakuierbarem Wärmeisolationsmaterial 39 verfüllt ist, welches die beiden Deckschichten 31 gegeneinander abstützt. 2 shows a simplified schematic illustration of a second embodiment variant of a heat-insulating wall 30 based on vacuum insulation technology for use in a cold appliance house, a cold appliance, a stove muffle or a tub or the like. Corrosion-resistant steel plate with a material thickness of 0.4 mm or cover layers 31 formed from a metal-coated or laminated plastic plate, each of which is used to create a passage 32, for example, as an inflow or outflow opening or also as an opening for cables or the like, with a material deformation 33 are provided in the form of a bowl. The bowl-shaped material deformation 33 has a closed-walled bowl wall 34 and a bowl bottom 35 which is at least largely flat, in which e is introduced into the opening 36 in the cover layers 31 immediately after the non-cutting shaping of the material deformation 33, so that the openings 36 in the cup base 35 are congruently opposed to one another. The material deformations 33 in the cover layers 31 are directed towards one another and their depth t is such dimensioned such that the mutually facing outer sides of the cup base 35 occupy half the distance of the spaced-apart cover layers 31. The cup bases 35 lying against one another are connected to one another with a weld seam 37 which is arranged all around the openings 36, which together with the cup-like material deformation 33 the passage 32 through the heat insulating wall 30 forms. This has at the free ends of its cover layers 31 for a vacuum-tight connection of the cover layers 31, a connection profile, not shown, which, together with the cover layers 31, encloses an evacuable space 38. In order to support the cover layers 31 in the evacuated state of the intermediate space 38 against atmospheric pressure, the latter is filled with evacuable heat insulation material 39 which supports the two cover layers 31 against one another.

Claims

Patentansprüche claims
1. Wärmeisolierende Wandung mit zwei zueinander beabstandeten, zumindest im wesentlichen vakuumdichten Deckschichten, welche über ein Verbindungsprofil unter Bildung eines evakuierbaren, mit Wärmeisolationsmaterial verfüllten Zwischenraums miteinander vakuumdicht verbunden sind, wobei zur Überbrückung des Zwischenraums wenigstens eine mit Durchbrüchen an den Deckschichten mündende Durchführung zur Aufnahme von Leitungen oder dergleichen vorgese- hen ist, dadurch gekennzeichnet, daß die Durchführung (13) zumindest weitestgehend durch eine Materialverformung (14) einer der Deckschichten (12) gebildet ist, welche durch die Materialverformung (14) wenigstens annähernd an die andere Deckschicht (11) herangeführt und mit dieser vakuumdicht zumindest umlaufend um die Durchbrüche (17, 18) verbunden ist.1.Thermally insulating wall with two spaced apart, at least substantially vacuum-tight cover layers, which are connected to one another in a vacuum-tight manner by means of a connecting profile to form an evacuable space filled with heat insulation material, with at least one passage opening with openings in the cover layers to accommodate the gap in order to bridge the gap Lines or the like is provided, characterized in that the feedthrough (13) is at least largely formed by a material deformation (14) of one of the cover layers (12), which by the material deformation (14) at least approximately to the other cover layer (11) brought up and connected to it in a vacuum-tight manner at least all around the openings (17, 18).
2. Wärmeisolierende Wandung nach Anspruch 1 , dadurch gekennzeichnet, daß die Durchführung (32) durch eine an beiden Deckschichten (31) vorgesehene Materialverformung (33) gebildet ist, welche an ihren einander zugewandten, mit einem Durchbruch (36) ausgestatteten Enden vakuumdicht miteinander verbunden sind.2. Heat-insulating wall according to claim 1, characterized in that the bushing (32) is formed by a material deformation (33) provided on both cover layers (31), which ends are connected to one another in vacuum-tight manner at their ends which are provided with an opening (36) are.
3. Wärmeisolierende Wandung nach Anspruch 2, dadurch gekennzeichnet, daß jede der an beiden Deckschichten (31) ausgebildeten Materialverformungen (33) zumindest annähernd eine die halbe Breite des Abstandes der Deckschichten (31) aufweisende Tiefe besitzen. 3. Heat-insulating wall according to claim 2, characterized in that each of the material deformations (33) formed on both cover layers (31) have at least approximately a depth of half the width of the distance between the cover layers (31).
4. Wärmeisolierende Wandung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Materialverformung (14, 33) napfähnlich mit einem Napfboden (16, 35) ausgebildet ist, welcher den Durchbruch (17, 36) der verformten Deckschicht (12, 31) aufweist und mit der zweiten Deckschicht (11 , 31) vakuum- dicht verbunden ist.4. Heat-insulating wall according to one of claims 1 to 3, characterized in that the material deformation (14, 33) is cup-like with a cup bottom (16, 35) which has the opening (17, 36) of the deformed cover layer (12, 31 ) and is connected to the second cover layer (11, 31) in a vacuum-tight manner.
5. Haushaltsgerät wie ein Kältegerät, ein Geschirrspüler, ein Herd, eine Waschmaschine oder dergleichen mit einer wärmeisolierenden Wandung, wie einem wärmeisolierenden Kältegerätegehäuse, einer wärmeisolierenden Kältegerätetür, ei- ner Herdmuffel, einem Spül- oder Laugenbehälter oder dergleichen, dadurch gekennzeichnet, daß die wärmeisolierende Wandung nach einem der Ansprüche 1 bis 4 ausgebildet ist. 5. Household appliance such as a refrigerator, a dishwasher, a stove, a washing machine or the like with a heat-insulating wall, such as a heat-insulating refrigerator housing, a heat-insulating refrigerator door, an oven muffle, a washing or lye container or the like, characterized in that the heat-insulating Wall according to one of claims 1 to 4 is formed.
EP00981228A 1999-12-01 2000-10-31 Thermally insulating wall Withdrawn EP1238237A1 (en)

Applications Claiming Priority (3)

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DE19957806A DE19957806A1 (en) 1999-12-01 1999-12-01 Insulating wall
DE19957806 1999-12-01
PCT/EP2000/010756 WO2001039570A1 (en) 1999-12-01 2000-10-31 Thermally insulating wall

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DE (1) DE19957806A1 (en)
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DE19957806A1 (en) 2001-06-07
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BR0015840A (en) 2002-08-06
WO2001039570A1 (en) 2001-06-07
US20030008100A1 (en) 2003-01-09

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