EP1208339B1 - Heat-insulating wall - Google Patents

Heat-insulating wall Download PDF

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Publication number
EP1208339B1
EP1208339B1 EP00947990A EP00947990A EP1208339B1 EP 1208339 B1 EP1208339 B1 EP 1208339B1 EP 00947990 A EP00947990 A EP 00947990A EP 00947990 A EP00947990 A EP 00947990A EP 1208339 B1 EP1208339 B1 EP 1208339B1
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EP
European Patent Office
Prior art keywords
inner lining
thermally insulating
profile member
outer casing
insulating wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00947990A
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German (de)
French (fr)
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EP1208339A1 (en
Inventor
Jürgen HIRATH
Stefan Holzer
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
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Publication date
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Publication of EP1208339A1 publication Critical patent/EP1208339A1/en
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Publication of EP1208339B1 publication Critical patent/EP1208339B1/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
    • F25D23/062—Walls defining a cabinet
    • 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

Definitions

  • the invention relates to a heat-insulating wall with a largely vacuum-tight outer jacket and a spaced, largely vacuum-tight inner lining, wherein the inner lining and the outer shell are connected to each other by a at least approximately in cross-section U-shaped, a membrane-like, thin-walled base having connecting profile vacuum-tight which, together with the outer shell and the inner lining, encloses a space filled with heat-insulating material, the legs of the connecting profile engaging over the outer jacket and the inner lining.
  • the vacuum-insulated wall known from this document has two shell walls made, for example, of stainless steel, which are connected to one another in a vacuum-tight manner by a connecting profile arranged at their free edges and having a U-shaped cross-section.
  • a connecting profile arranged at their free edges and having a U-shaped cross-section.
  • the legs of the U-profile are welded to the free ends of the shell walls, parallel to these, for example by a beam welding process.
  • clamping and support tools are required.
  • the US-A-3156975 shows a heat-insulating wall according to the preamble of claim 1 .
  • the invention has for its object to improve a heat-insulating wall according to the preamble of claim 1 with simple constructive measures.
  • an increased pressure-resistant open-cell heat insulation material such as an increased to increase its compressive strength at elevated, lying above the glass temperature temperature open-cell polymer foam such.
  • polystyrene foam under the manufacturer's name DOW INSTILL ® , also unnecessary tools for supporting the sweat-resistant bracing of the outer shell or the inner lining with the legs of the U-shaped connection profile resulting clamping forces.
  • DOW INSTILL ® also unnecessary tools for supporting the sweat-resistant bracing of the outer shell or the inner lining with the legs of the U-shaped connection profile resulting clamping forces.
  • the inverted over the free ends of the outer shell and the inner lining U-shaped connection profile allows in comparison to the prior art, an optimized use of the heat-insulating walls, as these also on the Junction of their outer shell walls now have full thermal insulation capacity.
  • the object of the invention it is provided that is provided on 'the inner lining and the outer jacket heat insulation side, at least approximately over the length and height of the legs of the U-shaped connection profile a Deutschenlegeelement.
  • a backing element ensures that the heat produced during the welding operation of the limbs of the U-shaped connection profile with the outer shell or the inner lining is at least largely shielded by the open-celled thermal insulation material introduced as a support body between the outer shell and the inner lining, which results in process control the welding process, namely the clearly indispensable in vacuum-tight connection of the connection profile with the outer shell or the inner lining thorough welding.
  • a backing has shown to shield the welding heat occurring during welding of the introduced as a support body between the outer shell and the inner lining open-cell heat insulation material, if according to a next advantageous embodiment of the subject Is provided invention that the backing element consists of a stainless steel strip or an aluminum strip with an at least the material thickness of the outer shell or the inner lining having material thickness. With material thicknesses of the order of 1 mm, good heat shielding results have already been shown.
  • the U-shaped connection profile for connection of the outer shell and the inner lining of several longitudinal sections is composed, the joints forming ends are at least largely vacuum-tight connected to each other.
  • connection profile in sections along the edges to be joined between the inner lining and the outer jacket simplifies the manufacture of the vacuum-tight connection, e.g. made by gluing or welding, considerably, whereby the manufacturing costs for the heat-insulating wall are significantly reduced.
  • the support elements serving as supports for the membrane-like base of the connection profiles at the same time facilitate the vacuum-tight connection of the ends of the longitudinal sections at the joints.
  • the U-shaped support elements on the outer shell on the one hand and the inner lining on the other hand are particularly simple and process-reliable fixable, if according to a next preferred embodiment of the subject invention, it is provided that the U-shaped support element with its legs heat-insulating on the inner lining and the outer shell is fixed ,
  • the U-shaped connection profile is covered by a U-shaped cover profile, which overlaps with its legs, the legs of the connection profile and is supported on this. Due to the U-shaped design of the cover profile, the connection profile is vacuum-tight both on its outer jacket or on the inner lining, for example, by welding or gluing fixed legs and protected on its shock-sensitive membrane-like base.
  • the cover has for its support holding means which are able to support the cover with its base to form a receiving space at a distance from the base of the connection profile.
  • the former is protected even with a relatively high impact load of the cover profile.
  • the space allows in a space-saving and aesthetic way the arrival and placement of other functional parts, such as an anchor for a coming in a refrigerator door magnetic seal or a heating cable to prevent condensation of the refrigerator housing in the region of its access opening.
  • the cover when, according to a next advantageous embodiment of the subject invention provides that the holding means are formed on the cover as arranged on the inside of its legs at a distance from the height of the connection profile retaining strips.
  • a heat-insulating wall is formed, if it is provided according to a next preferred embodiment of the subject invention that the inner lining, the outer jacket and the connecting profile of thin-walled stainless steel or aluminum laminated plastic are formed.
  • a refrigeration device with a heat-insulating housing and at least one heat-insulating door when provided according to a further preferred embodiment of the object of the invention that the wall of the housing and the door after a of claims 1 to 11 are formed.
  • a household stove with a baking chamber surrounding thermally insulating oven muffle is also formed particularly favorable in terms of its thermal insulation capacity in view of the approach to be brought strength of the heat-insulating walls.
  • FIG. 1 shows a heat-insulating housing 10 suitable for a household refrigerating appliance, such as a refrigerator or freezer, using vacuum insulation technology, within which a useful space 11 designed, for example, as a refrigerator or freezer compartment is provided.
  • a vacuum-tight for example, from a 0.4 mm thick stainless steel sheet or corrosion-resistant steel sheet shaped réelleverKleidung 12.
  • a vacuum-tight outer casing 13 Spaced apart from the inner lining 12, a vacuum-tight outer casing 13, likewise formed from 0.4 mm thick stainless steel sheet or corrosion-protected sheet steel, is provided which, together with the inner lining 12, forms the enveloping layers of the housing 10.
  • an evacuated heat insulating material 14 serving for supporting the inner lining 12 or the outer sheath 13 in the evacuated state of the housing 10, such as open-cell polyurethane foam or open-cell polystyrene foam, is introduced.
  • heat insulating material 14 also serves as a heat-insulating evakuierbare filling a pivotally hinged to the housing 10 door 15, which like the housing 10 at its the Nutzraum 11 inside facing a vacuum-tight inner lining 16 and a vacuum-tight outer jacket 17 spaced therefrom, which like the inner lining 16, for example Stainless steel sheet or corrosion-resistant steel sheet with a material thickness of 0.4 mm is formed at least largely without cutting.
  • connection profile 18 which is identical for the door 15 and the housing 10 and which for the production of the door body together with the inner lining 16 and the outer shell 17 and for the production of the housing body with the inner lining 12 and the outer jacket 13 is used together with the enclosure walls of the door 15 and the enclosure walls of the housing 10, the connection profile 18 encloses an evacuable space, which with the heat insulating material 14 for supporting the inner lining 12 and the outer shell serving as the enveloping walls 13 or to support the inner lining 16 and the outer shell 17 in the evacuated state of the housing 10 and the door 15 is filled.
  • the connecting profile 18 described below by way of the example of the housing 10 has two U-profile legs 19, which are connected to one another by a thin-walled base 20 of a membrane-like design the material thickness of the inner linings or the outer shells having U-profile legs 19 are made of vacuum-tight material such as stainless steel or the like.
  • the connecting section 18 engages with its U-profile legs 19, the inner lining 16 and the outer shell 17 and the inner lining 12 and the outer shell 13 such that the outside thereof with the inside of the U-profile legs 19 and the base 20 with its inside with the free ends the inner lining 12 or 16 or the outer sheath 13 or 17 comes to rest.
  • the cross-sectionally U-shaped connection profile 18 along the free, vacuum-tight edges to be joined between the inner panel 12 and the outer shell 13 and the inner panel 16 and the outer shell 17 is divided into a plurality of longitudinal sections 21, wherein the in a certain joining distance from each other arranged ends 22 are supported on a cross-sectional U-shaped support member 23.
  • This is fixed with its legs on the mutually facing inner sides of the inner lining 12 and the outer shell 13 and the inner lining 16 and the outer shell 17, wherein the base of the U-shaped support member 23 at least substantially equal in height with the free ends of the inner lining 12 and 16 and the outer sheath 13 or 17 and serves as a support surface for the membrane-like base 20 of the sections 21.
  • the support elements 23 are adjoined by flat-profile abutment elements 24 formed approximately at the same height as the legs thereof, the material thickness of which substantially corresponds to that of the legs of the support elements 23.
  • backing elements 24 serve as the legs of the likewise made of stainless steel support elements 23 for the most extensive insulation during vacuum-tight welding of composite of several longitudinal sections 21 Vietnamesesprofiles 18 on the inner lining 12 and the For vacuum-tight attachment of the kausprofiles 18 with the inner lining 12 and the outer shell 13 and the inner lining 16 are on the one hand along the U-profile legs 19 extending welds S1 provided, the welding depth extends up to the backing elements 24 and in the region of the support elements 23 to the legs down.
  • welds S2 are provided, which intersect with the welds S1 in the region of the U-profile legs 19, whereby the connecting profile 18 formed from individual partial longitudinal sections 21 both in Area of the support elements 23 and in the area outside of this vacuum-tight to the inner lining 12 and the outer shell 13 and the inner lining 16 and the outer shell 17 is fixed.
  • a cross-sectionally U-shaped, for example, made of plastic injection molded covering 25 is provided.
  • the cover 26 is slipped over the connection profile 18 in the assembled state and has U-profile legs 26 which protrude with its free end against the free end of the U-profile legs 19 and are provided on their mutually facing inner sides with mitangeformten retaining strips 27 which along the U Profile legs 26 extend parallel to each other.
  • mitangeformten retaining strips 27 one is provided in the vicinity of the free end of each U-profile leg 26, while the other retaining strips 27 are arranged closer to the root of the U-profile legs 26 and at a clear distance of the lateral height h of the connection profile 18 to the the free leg ends provided retaining strips 27 are spaced.
  • the two U-profile legs 26 interconnecting base 28 is provided, which is arranged in the assembled state of the cover 25 at a distance above the base 20, whereby a gap 29 is formed.
  • the cover 25 in which this is provided by means of its provided on the U-profile legs 26, respectively the lateral portion of the connecting section 18 between them receiving retaining strips 27 form-fitting manner on the connection profile 18 is in the interspace formed thereby 29 serving as a heating heating cable 30, for example in the form of a hot gas line introduced to avoid condensation of the connection profile 18 and fixed by means not shown holding means of the cover 25.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Insulation (AREA)
  • Building Environments (AREA)
  • Refrigerator Housings (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A heat-insulating walling includes an outer casing that is vacuum-tight as far as possible and with an inner lining being vacuum-tight as far as possible and spaced from the latter. The inner lining and the outer casing are connected to one another, vacuum-tight, by a connecting profile. The connecting profile has an at least approximately U-shaped cross section and has a diaphragm-like base. The connecting profile, together with the outer casing and the inner lining, surrounds an interspace filled with heat-insulation material. The U-shaped connecting profile can engage with its legs over the outer casing and the inner lining. The legs can be vacuum-tightly secured to the inner lining and the outer casing.

Description

Die Erfindung betrifft eine wärmeisolierende Wandung mit einem weitestgehend vakuumdichten Außenmantel und einer dazu beabstandeten, weitestgehend vakuumdichten Innenverkleidung, wobei die Innenverkleidung und der Außenmantel miteinander durch ein zumindest annähernd im Querschnitt u-förmig geformtes, eine membranartig ausgebildete, dünnwandige Basis aufweisendes Verbindungsprofil vakuumdicht verbunden sind, welches zusammen mit dem Außenmantel und der Innenverkleidung einen mit Wärmeisolationsmaterial verfüllten Zwischenraum umschließt, wobei die Schenkel der Verbindungsprofils den Außenmantel und die Innenverkleidung übergreifen.The invention relates to a heat-insulating wall with a largely vacuum-tight outer jacket and a spaced, largely vacuum-tight inner lining, wherein the inner lining and the outer shell are connected to each other by a at least approximately in cross-section U-shaped, a membrane-like, thin-walled base having connecting profile vacuum-tight which, together with the outer shell and the inner lining, encloses a space filled with heat-insulating material, the legs of the connecting profile engaging over the outer jacket and the inner lining.

Aus der DE OS 197 45 861 A1 ist eine auf Vakuumisolationstechnik basierende wärmeisolierende Wandung zur Anwendung bei einem Kältegerätegehäuse, einer Kältegerätetür oder einer bei einem Haushaltsherd verwendeten Offenmuffel bekannt. Die aus dieser Druckschrift bekannte vakuumisolierte Wandung besitzt zwei beispielsweise aus Edelstahl angefertigte Hüllwände, welche miteinander durch ein an ihren freien Rändern angeordnetes, im Querschnitt u-förmig ausgebildetes Verbindungsprofil vakuumdicht miteinander verbunden sind. Zur vakuumdichten Verbindung sind die Schenkel des U-Profils mit den freien Enden der Hüllwände, parallel zu diesen, beispielsweise durch ein Strahlschweißverfahren verschweißt. Zur Ausführung des Schweißvorganges, insbesondere zum schweißgerechten Verspannen der miteinander zu verschweißenden Bauteile sind Spann- und Abstützwerkzeuge erforderlich. Die letzteren sind bei der Ausführung des Schweißvorganges zwischen die Schenkel des u-förmigen Verbindungsprofiles einzubringen, um einerseits die Verspannkräfte der zu verschweißenden Bauteile abzufangen und andererseits einer zu starken Deformierung der Bauteile an Ihrer Verbindungsstelle vorzubeugen. Durch diese Maßnahmen ist zwar eine prozeßsichere, einwandfreie Fertigung der eingangs genannten wärmeisolierender Gehäuse und Türen gewährleistet, jedoch sind diese Maßnahmen fertigungsaufwendig und somit kostenträchtig. Außerdem ist bei dieser Art der Anbringung des u-förmigen Verbindungsprofiles zur Vermeidung unnötiger Wärme- bzw. Kälteverluste der Raum zwischen den Schenkeln des Verbindungsprofiles mit Wärmeisolationsmaterial zu verfüllen.From the DE OS 197 45 861 A1 is known based on vacuum insulation technology heat-insulating wall for use in a refrigeration appliance housing, a refrigerator door or an open-mold used in a household stove. The vacuum-insulated wall known from this document has two shell walls made, for example, of stainless steel, which are connected to one another in a vacuum-tight manner by a connecting profile arranged at their free edges and having a U-shaped cross-section. For vacuum-tight connection, the legs of the U-profile are welded to the free ends of the shell walls, parallel to these, for example by a beam welding process. For carrying out the welding process, in particular for welding bracing the components to be welded together clamping and support tools are required. The latter are to be introduced in the execution of the welding process between the legs of the U-shaped connection profile, on the one hand to absorb the Verspannkräfte welded components and on the other hand to prevent excessive deformation of the components at your junction. Although a process-safe, flawless production of the aforementioned heat-insulating housing and doors is guaranteed by these measures, but these measures are production-consuming and thus costly. In addition, in this type of attachment of the U-shaped connection profile to avoid unnecessary heat or cold losses of space between the legs of the Verbindungsprofiles with heat insulation material to fill.

Die US-A-3156975 zeigt eine wärmeisolierende Wandung gemäß dem Oberbegriff des Auspruchs 1. The US-A-3156975 shows a heat-insulating wall according to the preamble of claim 1 .

Der Erfindung liegt die Aufgabe zugrunde, eine wärmeisolierende Wandung gemäß dem Oberbegriff des Anspruches 1 mit einfachen konstruktiven Maßnahmen zu verbessern.The invention has for its object to improve a heat-insulating wall according to the preamble of claim 1 with simple constructive measures.

Diese Aufgabe wird gemäß der Erfindung durch die Merkmale des kennzeichnenden Teils des Auspruchs 1 gelöst.This object is achieved according to the invention by the features of the characterizing part of claim 1.

Durch die Befestigung des Verbindungsprofiles derart, daß dessen Schenkel mit Ihrer Innenseite im Befestigungszustand des Profiles an den Außenseiten des Außenmantels bzw. der Innenverkleidung anliegen und an diesen Seiten beispielsweise durch Verschweißen oder Verkleben vakuumdicht festgesetzt sind, ist ein Zwischenraum, wie er bei der herkömmlichen Anbringung des u-förmigen Verbindungsprofiles entsteht und zur Vermeidung von Wärmeisolationsverlusten mit Wärmeisolationsmaterial zu verfüllen ist, vermieden. Darüber hinaus ist eine mögliche Verletzungsgefahr, hervorgerufen durch die beim Herstellprozeß des Außenmantels bzw. der Innenverkleidung an deren Rändern erzeugten scharfen Kanten für das Fertigungspersonal bei der Handhabung der wärmeisolierenden Wandung während ihres Fertigungsdurchlaufes aufgrund der kappenähnlichen Abdeckung der scharfkantigen freien Ränder der Innenverkleidung bzw. des Außenmantels durch das u-förmige Verbindungsprofil beseitigt. Durch die Verwendung eines erhöht druckfesten offenzelligen Wärmeisolationsmaterials, wie beispielsweise einem zur Erhöhung seiner Druckfestigkeit bei erhöhter, über der Glastemperatur liegenden Temperatur gepreßten offenzelligen Polymerschaum, wie z. B. Polystyrolschaum, unter der Herstellerbezeichnung DOW INSTILL®, erübrigen sich zudem Werkzeuge zur Abstützung der beim schweißgerechten Verspannen des Außenmantels bzw. der Innenverkleidung mit den Schenkeln des u-förmigen Verbindungsprofils entstehenden Spannkräfte. Das über die freien Enden des Außenmantels und der Innenverkleidung gestülpte u-förmige Verbindungsprofil ermöglicht im Vergleich zum Stand der Technik eine optimierte Nutzung der wärmeisolierenden Wandungen, da diese auch an der Verbindungsstelle ihrer äußeren Hüllwände nunmehr vollwertiges Wärmeisolationsvermögen besitzen.By attaching the Verbindungsprofiles such that the legs abut with your inside in the mounting state of the profile on the outer sides of the outer shell or the inner lining and are fixed vacuum-tight at these pages, for example, by welding or gluing, is a gap, as in the conventional attachment of the U-shaped connection profile is created and to avoid heat insulation losses with heat insulation material is to be filled, avoided. In addition, a potential risk of injury, caused by the sharp edges produced in the manufacturing process of the outer shell or the inner lining at the edges of the manufacturing personnel during handling of the heat-insulating wall during their manufacturing cycle due to the cap-like cover of the sharp edges of the free inner lining or the outer shell eliminated by the U-shaped connection profile. By using an increased pressure-resistant open-cell heat insulation material, such as an increased to increase its compressive strength at elevated, lying above the glass temperature temperature open-cell polymer foam such. As polystyrene foam, under the manufacturer's name DOW INSTILL ® , also unnecessary tools for supporting the sweat-resistant bracing of the outer shell or the inner lining with the legs of the U-shaped connection profile resulting clamping forces. The inverted over the free ends of the outer shell and the inner lining U-shaped connection profile allows in comparison to the prior art, an optimized use of the heat-insulating walls, as these also on the Junction of their outer shell walls now have full thermal insulation capacity.

Nach einer bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß an' der Innenverkleidung und dem Außenmantel wärmeisolationsseitig zumindest annähernd über die Länge und Höhe der Schenkel des u-förmigen Verbindungsprofil ein Hinterlegeelement vorgesehen ist.According to a preferred embodiment of the object of the invention it is provided that is provided on 'the inner lining and the outer jacket heat insulation side, at least approximately over the length and height of the legs of the U-shaped connection profile a Hinterlegeelement.

Durch die Verwendung eines Hinterlegeelementes ist sichergestellt, daß die beim Verschweißvorgang der Schenkel des u-förmigen Verbindungsprofiles mit dem Außenmantel bzw. der Innenverkleidung entstehende Wärme von dem als Stützkörper zwischen dem Außenmantel und der Innenverkleidung eingebrachten offenzelligen Wärmeisolationsmaterial zumindest weitestgehend abgeschirmt ist, wodurch sich die Prozeßführung des Verschweißvorganges, nämlich das beim vakuumdichten Verbinden des Verbindungsprofiles mit dem Außenmantel bzw. der Innenverkleidung unerläßliche Durchschweißen deutlich erleichtert.The use of a backing element ensures that the heat produced during the welding operation of the limbs of the U-shaped connection profile with the outer shell or the inner lining is at least largely shielded by the open-celled thermal insulation material introduced as a support body between the outer shell and the inner lining, which results in process control the welding process, namely the clearly indispensable in vacuum-tight connection of the connection profile with the outer shell or the inner lining thorough welding.

Als besonders günstig im Hinblick auf die Wärmeabschirmung einerseits und die Ausführung des Schweißprozesses andererseits hat sich ein Hinterlegteil zur Abschirmung der beim Verschweißvorgang auftretenden Schweißwärme von dem als Stützkörper zwischen dem Außenmantel und der Innenverkleidung eingebrachten offenzelligen Wärmeisolationsmaterial gezeigt, wenn nach einer nächsten vorteilhaften Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß das Hinterlegelement aus einem Edelstahlstreifen oder einem Aluminiumstreifen mit einer zumindest die Materialstärke des Außenmantels bzw. der Innenverkleidung aufweisenden Materialstärke besteht. Bei Materialstärken in der Größenordnung von 1 mm haben sich bereits gute Wärmeabschirmergebnisse gezeigt.To be particularly favorable in terms of the heat shield on the one hand and the execution of the welding process on the other hand, a backing has shown to shield the welding heat occurring during welding of the introduced as a support body between the outer shell and the inner lining open-cell heat insulation material, if according to a next advantageous embodiment of the subject Is provided invention that the backing element consists of a stainless steel strip or an aluminum strip with an at least the material thickness of the outer shell or the inner lining having material thickness. With material thicknesses of the order of 1 mm, good heat shielding results have already been shown.

Entsprechend einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß das u-förmige Verbindungsprofil zur Verbindung des Außenmantels und der Innenverkleidung aus mehreren Längsabschnitten zusammengesetzt ist, deren Stoßstellen bildende Enden zumindest weitestgehend vakuumdicht miteinander verbunden sind.According to a further preferred embodiment of the object of the invention it is provided that the U-shaped connection profile for connection of the outer shell and the inner lining of several longitudinal sections is composed, the joints forming ends are at least largely vacuum-tight connected to each other.

Durch die Möglichkeit das Verbindungsprofil abschnittsweise entlang der zu verbindenden Ränder zwischen der Innenverkleidung und dem Außenmantel vakuumdicht befestigen zu können, vereinfacht sich die Herstellung der vakuumdichten Verbindung, z.B. hergestellt durch Verkleben oder Verschweißen, erheblich, wodurch die Fertigungskosten für die wärmeisolierende Wandung deutlich gesenkt sind.The possibility of vacuum-tight fastening of the connection profile in sections along the edges to be joined between the inner lining and the outer jacket simplifies the manufacture of the vacuum-tight connection, e.g. made by gluing or welding, considerably, whereby the manufacturing costs for the heat-insulating wall are significantly reduced.

Besonders prozeßsicher vakuumdicht miteinander verbindbar sind die entlang der zu verbindenden Ränder des Außenmantels und der Innenverkleidung ineinander gefügten Enddabschnitte der einzelnen Längsabschnitte, wenn nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß an den Stoßstellen ein u-förmig ausgebildetes, zumindest die Stoßstellen überbrückendes Stützelement vorgesehen ist, auf welchem die Enden der u-förmigen Verbindungsteile aufliegen und vakuumdicht miteinander verbunden sind. Die als Auflager für die membranartig ausgebildete Basis der Verbindungsprofile dienenden Stützelemente erleichtern zugleich das vakuumdichte Verbinden der Enden der Längsabschnitte an den Stoßstellen.Particularly process-reliable vacuum-tight connectable to each other along the edges to be joined to the outer shell and the inner lining Enddabschnitte the individual longitudinal sections when provided according to another preferred embodiment of the subject invention, that at the joints a U-shaped, at least the joints bridging support member is provided, on which the ends of the U-shaped connecting parts rest and are connected to each other vacuum-tight. The support elements serving as supports for the membrane-like base of the connection profiles at the same time facilitate the vacuum-tight connection of the ends of the longitudinal sections at the joints.

Besonders einfach und prozeßsicher festsetzbar sind die u-förmigen Stützelemente am Außenmantel einerseits und der Innenverkleidung andererseits, wenn nach einer nächsten bevorzugten Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß das u-förmige Stützelement mit seinen Schenkeln wärmeisolationsseitig an der Innenverkleidung und dem Außenmantel festgesetzt ist.The U-shaped support elements on the outer shell on the one hand and the inner lining on the other hand are particularly simple and process-reliable fixable, if according to a next preferred embodiment of the subject invention, it is provided that the U-shaped support element with its legs heat-insulating on the inner lining and the outer shell is fixed ,

Gemäß einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß das u-förmige Verbindungsprofil von einem u-förmigen Abdeckprofil abgedeckt ist, welches mit seinen Schenkeln die Schenkel des Verbindungsprofiles übergreift und an diesem gehaltert ist. Durch die u-förmige Ausbildung des Abdeckprofiles ist das Verbindungsprofil sowohl an seinen am Außenmantel bzw. an der Innenverkleidung vakuumdicht, beispielsweise durch Verschweißen oder Verkleben festgesetzten Schenkeln als auch an seiner stoßempfindlichen membranartigen Basis geschützt.According to a further preferred embodiment of the object of the invention it is provided that the U-shaped connection profile is covered by a U-shaped cover profile, which overlaps with its legs, the legs of the connection profile and is supported on this. Due to the U-shaped design of the cover profile, the connection profile is vacuum-tight both on its outer jacket or on the inner lining, for example, by welding or gluing fixed legs and protected on its shock-sensitive membrane-like base.

Entsprechend einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß das Abdeckprofil zu seiner Halterung Haltemittel aufweist, welche das Abdeckprofil mit seiner Basis unter Bildung eines Aufnahmeraums im Abstand zur Basis des Verbindungsprofils zu haltern vermögen.According to a further preferred embodiment of the object of the invention it is provided that the cover has for its support holding means which are able to support the cover with its base to form a receiving space at a distance from the base of the connection profile.

Durch die Schaffung eines Zwischenraums zwischen der stoßempfindlichen Basis des Verbindungsprofils und der Basis des Abdeckprofiles ist erstere auch bei einer relativ hohen Stoßbelastung des Abdeckprofils geschützt. Zudem ermöglicht der Zwischenraum auf platzsparende und ästhetische Weise die An- und Unterbringung von weiteren Funktionsteilen, beispielsweise eines Ankers für eine bei einer Kältegerätetür zur Anwendung kommende Magnetdichtung oder einer Heizleitung zur Vermeidung einer Betauung des Kältegerätegehäuses im Bereich seiner Zugangsöffnung.By providing a gap between the shock sensitive base of the connection profile and the base of the cover profile, the former is protected even with a relatively high impact load of the cover profile. In addition, the space allows in a space-saving and aesthetic way the arrival and placement of other functional parts, such as an anchor for a coming in a refrigerator door magnetic seal or a heating cable to prevent condensation of the refrigerator housing in the region of its access opening.

Besonders positionsgenau im Hinblick auf die Bildung des Aufnahmeraumes gehalten ist das Abdeckprofil, wenn nach einer nächsten vorteilhaften Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß die Haltemittel am Abdeckprofil als an der Innenseite seiner Schenkel im Abstand der Höhe des Verbindungsprofils angeordnete Halteleisten ausgebildet sind.Particularly accurately positioned with respect to the formation of the receiving space is the cover when, according to a next advantageous embodiment of the subject invention provides that the holding means are formed on the cover as arranged on the inside of its legs at a distance from the height of the connection profile retaining strips.

Besonders unauffällig und besonders günstig hinsichtlich der Wärmeeinleitung zur Verhinderung der Betauung eines Kältegerätegehäuses an seiner Zugangsöffnung angeordnet ist eine leitungsartige Heizung, wenn nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß der Aufnahmeraum zur Einbringung einer am Abdeckprofil gehalterten leitungsartigen Heizung dient.Particularly inconspicuous and particularly favorable with respect to the introduction of heat to prevent the condensation of a refrigeration device housing is arranged at its access opening a line-like heating, if provided according to a further preferred embodiment of the object of the invention that the receiving space is used to introduce a content Erten on the cover profile line-like heating.

Besonders robust und beständig im Hinblick auf die Aufrechterhaltung des zwischen dem Außenmantel und der Innenverkleidung erzeugten Vakuums ist eine wärmeisolierende Wandung ausgebildet, wenn nach einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß die Innenverkleidung, der Außenmantel und das Verbindungsprofil aus dünnwandigem Edelstahl oder aluminiumkaschiertem Kunststoff gebildet sind.Particularly robust and resistant to the maintenance of the vacuum generated between the outer shell and the inner lining a heat-insulating wall is formed, if it is provided according to a next preferred embodiment of the subject invention that the inner lining, the outer jacket and the connecting profile of thin-walled stainless steel or aluminum laminated plastic are formed.

Besonders günstig hinsichtlich seines Wärmeisolationsvermögens im Verhältnis zu dem dafür erforderlichen isolierenden Wandstärken ausgebildet ist ein Kältegerät mit einem wärmeisolierenden Gehäuse und wenigstens einer wärmeisolierenden Tür, wenn nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß die Wandung des Gehäuses und der Tür nach einem der Ansprüche 1 bis 11 ausgebildet sind.Is formed particularly favorable in terms of its thermal insulation capacity in relation to the required insulating wall thicknesses, a refrigeration device with a heat-insulating housing and at least one heat-insulating door when provided according to a further preferred embodiment of the object of the invention that the wall of the housing and the door after a of claims 1 to 11 are formed.

Ebenso besonders günstig hinsichtlich seines Wärmeisolationsvermögens im Hinblick auf die dafür in Ansatz zu bringende Stärke der wärmeisolierenden Wandungen ausgebildet ist ein Haushaltsherd mit einer einen Backraum umgebenden wärmeisolierend ausgeführten Ofenmuffel, wenn nach einer alternativen Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß die Wandung der Ofenmuffel nach einem der Ansprüche 1 bis 11 ausgebildet ist.Also formed particularly favorable in terms of its thermal insulation capacity in view of the approach to be brought strength of the heat-insulating walls is a household stove with a baking chamber surrounding thermally insulating oven muffle, if provided according to an alternative embodiment of the object of the invention that the wall of the oven muffle after one of claims 1 to 11 is formed.

Die Erfindung ist in der nachfolgenden Beschreibung anhand eines in der beigefügten Zeichnung vereinfacht dargestellten Kältegerätegehäuses erläutert.The invention is explained in the following description with reference to a simplified in the accompanying drawing refrigeration device housing.

Es zeigen:

Fig. 1
in vereinfachter schematischer Darstellung ein wärmeisolierendes Gehäuse wie einen Haushaltskühlschrank mit einem Außenmantel, einer dazu beabstandeten Innenverkleidung und einem deren freien Ränder vakuumdicht miteinander verbindenden, von einem Abdeckprofil abgedeckten Verbindungsprofil, in Schnittdarstellung von der Seite,
Fig. 2
ausschnittsweise das Gehäuse gemäß Fig. 1 in Schnittdarstellung gemäß der Schnittlinie II-II, in Schrägansicht von vorne
Fig. 3
ausschnittsweise das Gehäuse ohne Abdeckprofil im Bereich seines Verbindungsprofils, im raumbildlicher Schnittdarstellung von vorne und
Fig.4
das aus einzelnen Längsabschnitten zusammengefügte und an der Fügestelle von einem Stützelement abgestützte Verbindungsprofil mit dem vakuumdicht daran festgesetzten Hüllwänden des wärmeisolierenden Gehäuses, in raumbildlicher Schnittdarstellung von vorne.
Show it:
Fig. 1
in a simplified schematic representation of a heat-insulating housing such as a household refrigerator with an outer shell, a spaced apart inner lining and a free edges vacuum-tight interconnecting, covered by a cover profile connection profile, in sectional view from the side,
Fig. 2
Sectionally the housing of FIG. 1 in a sectional view along the section line II-II, in an oblique view from the front
Fig. 3
Partially the housing without cover profile in the region of its connection profile, in three-dimensional sectional view from the front and
Figure 4
the joined from individual longitudinal sections and supported at the joint by a support member connecting profile with the vacuum-tight fixed thereto shell walls of the heat-insulating housing, in three-dimensional sectional view from the front.

Figur 1 ist ein für ein Haushaltskältegerät, wie einen Kühl- oder Gefrierschrank, geeignetes wärmeisolierendes Gehäuse 10 unter Anwendung von Vakuumisolationstechnik gezeigt, innerhalb welchem ein beispielsweise als Kühl- oder Gefrierraum ausgebildeter Nutzraum 11 vorgesehen ist. Dieser ist von einer vakuumdichten, beispielsweise aus einem 0,4 mm starken Edelstahlblech oder korrosionsgeschützten Stahlblech geformten InnenverKleidung 12 ausgekleidet. Beabstandet zur Innenverkleidung 12 ist eine ebenso aus 0,4 mm starkem Edelstahlblech oder korrosionsgeschützten Stahlblech gebildeter vakuumdichter Außenmantel 13 vorgesehen, welcher zusammen mit der Innenverkleidung 12 die Hüllschichten des Gehäuses 10 bildet. Zwischen dem Außenmantel 13 und der Innenverkleidung 12 ist ein zur Abstützung der Innenverkleidung 12 bzw. des Auβenmantels 13 in evakuiertem Zustand des Gehäuses 10 dienendes, evakuierbares Wärmeisolationsmaterial 14 wie beispielsweise offenzelliger Polyurethanschaum oder offenzelliger Polystyrolschaum eingebracht. Derartiges Wärmeisolationsmaterial 14 dient auch als wärmeisolierende evakuierbare Füllung einer am Gehäuse 10 verschwenkbar angeschlagenen Tür 15, welche wie das Gehäuse 10 an seiner den Nutzraum 11 zugewandten Innenseite eine vakuumdichte Innenverkleidung 16 und einen dazu beabstandeten vakuumdichten Außenmantel 17 besitzt, welcher wie die Innenverkleidung 16 z.B. aus Edelstahlblech oder korrosionsgeschütztem Stahlblech mit einer Materialstärke von 0,4 mm zumindest weitestgehend spanlos geformt ist. Zur vakuumdichten Verbindung der Innenverkleidung 16 mit dem Außenmantel 17 bzw. der Innenverkleidung 12 mit dem Außenmantel 13 ist an deren freien Rändern umlaufend ein im Querschnitt u-förmig ausgebildetes Verbindungsprofil 18 vorgesehen, welches für die Tür 15 und das Gehäuse 10 identisch ausgebildet ist und welches zur Herstellung des Türkorpus zusammen mit der Innenverkleidung 16 und dem Außenmantel 17 und zur Herstellung des Gehäusekorpus mit der Innenverkleidung 12 und dem Außenmantel 13 dient zusammen mit den Hüllwänden der Tür 15 bzw. den Hüllwänden des Gehäuses 10 umschließt das Verbindungsprofil 18 einen evakuierbaren Zwischenraum, welcher mit dem Wärmeisolationsmaterial 14 zur Abstützung der als Hüllwände dienenden Innenverkleidung 12 und des Außenmantels 13 bzw. zur Abstützung der Innenverkleidung 16 und des Außenmantels 17 im evakuierten Zustand des Gehäuses 10 bzw. der Tür 15 verfüllt ist.FIG. 1 shows a heat-insulating housing 10 suitable for a household refrigerating appliance, such as a refrigerator or freezer, using vacuum insulation technology, within which a useful space 11 designed, for example, as a refrigerator or freezer compartment is provided. This is lined by a vacuum-tight, for example, from a 0.4 mm thick stainless steel sheet or corrosion-resistant steel sheet shaped InnenverKleidung 12. Spaced apart from the inner lining 12, a vacuum-tight outer casing 13, likewise formed from 0.4 mm thick stainless steel sheet or corrosion-protected sheet steel, is provided which, together with the inner lining 12, forms the enveloping layers of the housing 10. Between the outer sheath 13 and the inner lining 12, an evacuated heat insulating material 14 serving for supporting the inner lining 12 or the outer sheath 13 in the evacuated state of the housing 10, such as open-cell polyurethane foam or open-cell polystyrene foam, is introduced. Such heat insulating material 14 also serves as a heat-insulating evakuierbare filling a pivotally hinged to the housing 10 door 15, which like the housing 10 at its the Nutzraum 11 inside facing a vacuum-tight inner lining 16 and a vacuum-tight outer jacket 17 spaced therefrom, which like the inner lining 16, for example Stainless steel sheet or corrosion-resistant steel sheet with a material thickness of 0.4 mm is formed at least largely without cutting. For vacuum-tight connection of the inner lining 16 with the outer shell 17 and the inner lining 12 with the outer shell 13 is provided at the free edges circumferentially a cross-sectionally U-shaped connection profile 18 which is identical for the door 15 and the housing 10 and which for the production of the door body together with the inner lining 16 and the outer shell 17 and for the production of the housing body with the inner lining 12 and the outer jacket 13 is used together with the enclosure walls of the door 15 and the enclosure walls of the housing 10, the connection profile 18 encloses an evacuable space, which with the heat insulating material 14 for supporting the inner lining 12 and the outer shell serving as the enveloping walls 13 or to support the inner lining 16 and the outer shell 17 in the evacuated state of the housing 10 and the door 15 is filled.

Wie aus den Figuren 2 bis 4 hervorgeht, weist das im folgendem am Beispiel des Gehäuses 10 beschriebene Verbindungsprofil 18 zwei u-Profil-Schenkel 19 auf, welche miteinander durch eine membranartig ausgebildete dünnwandige Basis 20 verbunden sind, wobei die Basis 20 und die im wesentlichen die Materialstärke der Innenverkleidungen bzw. der Außenmäntel aufweisenden U-Profil-Schenkel 19 aus vakuumdichtem Material wie beispielsweise Edelstahl oder dergleichen gebildet sind. Das Verbindungsprofil 18 übergreift mit seinen U-Profilschenkeln 19 die Innenverkleidung 16 und den Außenmantel 17 bzw. die Innenverkleidung 12 und den Außenmantel 13 derart, daß deren Außenseite mit der Innenseite der U-Profilschenkel 19 und die Basis 20 mit ihrer Innenseite mit den freien Enden der Innenverkleidung 12 bzw. 16 bzw. des Außenmantels 13 bzw. 17 zur Anlage kommt.As can be seen from FIGS. 2 to 4, the connecting profile 18 described below by way of the example of the housing 10 has two U-profile legs 19, which are connected to one another by a thin-walled base 20 of a membrane-like design the material thickness of the inner linings or the outer shells having U-profile legs 19 are made of vacuum-tight material such as stainless steel or the like. The connecting section 18 engages with its U-profile legs 19, the inner lining 16 and the outer shell 17 and the inner lining 12 and the outer shell 13 such that the outside thereof with the inside of the U-profile legs 19 and the base 20 with its inside with the free ends the inner lining 12 or 16 or the outer sheath 13 or 17 comes to rest.

Wie insbesondere Figur 4 zeigt, ist das im Querschnitt u-förmig ausgebildete Verbindungsprofil 18 entlang der freien, vakuumdicht zu verbindenden Ränder zwischen der Innenverkleidung 12 und dem Außenmantel 13 bzw. der Innenverkleidung 16 und dem Außenmantel 17 in mehrere Längsabschnitte 21 unterteilt, wobei deren in einem gewissen Fügeabstand voneinander angeordneten Enden 22 sich auf einem im Querschnitt als U-Profil ausgebildeten Stützelement 23 abstützen. Dieses ist mit seinen Schenkeln an den einander zugewandten Innenseiten der Innenverkleidung 12 und des Außenmantels 13 bzw. der Innenverkleidung 16 und des Außenmantels 17 festgesetzt, wobei die Basis des u-förmigen Stützelements 23 an zumindest im wesentlichen höhengleich mit den freien Enden der Innenverkleidung 12 bzw. 16 und des Außenmantels 13 bzw. 17 abschließt und als Auflagefläche für die membranartige Basis 20 der Teilabschnitte 21 dient. An die Stützelemente 23 schließen sich in etwa höhengleich zu dessen Schenkeln ausgebildete flachprofilige Hinterlegelemente 24 an, deren Materialstärke im wesentlichen die der Schenkel der Stützelemente 23 entspricht. Die aus schlecht wärmeleitendem Material, wie beispielsweise Edelstahl oder dergleichen, gefertigten Hinterlegelemente 24 dienen wie die Schenkel der ebenso aus Edelstahl gefertigten Stützelemente 23 zur weitestgehenden Abdämmung der beim vakuumdichten Verschweißen des aus mehreren Längsteilabschnitten 21 zusammengesetzten Verbindungsprofiles 18 an der Innenverkleidung 12 und dem Außenmantel 13 bzw. der lnnenverkleidung 16 und dem Außenmantel 17 mittels eines Strahlschweißverfahrens entstehenden Wärme vom Wärmeisolationsmaterial 14. Zur vakuumdichten Befestigung des Verbindungsprofiles 18 mit der Innenverkleidung 12 und dem Außenmantel 13 bzw. der Innenverkleidung 16 sind einerseits entlang der U-Profilschenkel 19 verlaufende Schweißnähte S1 vorgesehen, deren Schweißtiefe sich bis zu den Hinterlegelementen 24 bzw. im Bereich der Stützelemente 23 bis in deren Schenkeln hin erstreckt. Im Bereich der Stützelemente 23 sind über die Höhe der U-Profilschenkel 19 und quer zur Basis 20 verlaufende Schweißnähte S2 vorgesehen, welche sich mit den Schweißnähten S1 im Bereich der U-Profilschenkel 19 kreuzen, wodurch das aus einzelnen Teillängsabschnitten 21 gebildete Verbindungsprofil 18 sowohl im Bereich der Stützelemente 23 als auch im Bereich außerhalb dieser vakuumdicht an der Innenverkleidung 12 und dem Außenmantel 13 bzw. der Innenverkleidung 16 und dem Außenmantel 17 festgesetzt ist.As particularly shown in Figure 4, the cross-sectionally U-shaped connection profile 18 along the free, vacuum-tight edges to be joined between the inner panel 12 and the outer shell 13 and the inner panel 16 and the outer shell 17 is divided into a plurality of longitudinal sections 21, wherein the in a certain joining distance from each other arranged ends 22 are supported on a cross-sectional U-shaped support member 23. This is fixed with its legs on the mutually facing inner sides of the inner lining 12 and the outer shell 13 and the inner lining 16 and the outer shell 17, wherein the base of the U-shaped support member 23 at least substantially equal in height with the free ends of the inner lining 12 and 16 and the outer sheath 13 or 17 and serves as a support surface for the membrane-like base 20 of the sections 21. The support elements 23 are adjoined by flat-profile abutment elements 24 formed approximately at the same height as the legs thereof, the material thickness of which substantially corresponds to that of the legs of the support elements 23. Made of poor heat-conducting material, such as stainless steel or the like, backing elements 24 serve as the legs of the likewise made of stainless steel support elements 23 for the most extensive insulation during vacuum-tight welding of composite of several longitudinal sections 21 Verbindungsprofiles 18 on the inner lining 12 and the For vacuum-tight attachment of the Verbindungsprofiles 18 with the inner lining 12 and the outer shell 13 and the inner lining 16 are on the one hand along the U-profile legs 19 extending welds S1 provided, the welding depth extends up to the backing elements 24 and in the region of the support elements 23 to the legs down. In the region of the support elements 23 extending over the height of the U-profile legs 19 and transverse to the base 20 welds S2 are provided, which intersect with the welds S1 in the region of the U-profile legs 19, whereby the connecting profile 18 formed from individual partial longitudinal sections 21 both in Area of the support elements 23 and in the area outside of this vacuum-tight to the inner lining 12 and the outer shell 13 and the inner lining 16 and the outer shell 17 is fixed.

Zum Schutz des Verbindungsprofiles 18 ist entlang diesem, wie insbesondere Figur 2 zeigt, ein im Querschnitt u-förmig ausgebildetes, beispielsweise aus Kunststoffspritzguß gefertigtes Abdeckprofil 25 vorgesehen. Das Abdeckprofil 26 ist im Montagezustand über das Verbindungsprofil 18 gestülpt und besitzt U-Profilschenkel 26, welche mit ihrem freien Ende gegenüber dem freien Ende der U-Profilschenkel 19 vorstehen und an ihren einander zugewandten Innenseiten mit mitangeformten Halteleisten 27 versehen sind, welche entlang der U-Profilschenkel 26 im parallelen Abstand zueinander verlaufen. Von den Halteleisten 27 ist jeweils eine im Nahbereich des freien Endes eines jeden U-Profilschenkels 26 vorgesehen, während die anderen Halteleisten 27 näher an der Wurzel der U-Profilschenkel 26 angeordnet sind und im lichten Abstand der seitlichen Höhe h des Verbindungsprofiles 18 zu den an den freien Schenkelenden vorgesehenen Halteleisten 27 beabstandet sind. Im Abstand über den wurzelnahen Halteleisten 27 ist eine die beiden U-Profilschenkel 26 miteinander verbindende Basis 28 vorgesehen, welche im Montagezustand des Abdeckelementes 25 mit Abstand über der Basis 20 angeordnet ist, wodurch ein Zwischenraum 29 gebildet ist. Im Montagezustand des Abdeckelementes 25, in welchem dieses mittels seiner an den U-Profilschenkeln 26 vorgesehenen, jeweils den seitlichen Abschnitt des Verbindungsprofiles 18 zwischen sich aufnehmenden Halteleisten 27 formschlüssig am Verbindungsprofil 18 gehaltert ist, ist in den dadurch gebildeten Zwischenraum 29 eine als Heizung dienende Heizleitung 30 beispielsweise in Form einer Heißgasleitung zur Vermeidung einer Betauung des Verbindungsprofiles 18 eingebracht und mit nicht gezeigten Haltemitteln vom Abdeckelement 25 festgesetzt.To protect the connection profile 18 along this, in particular Figure 2 shows, a cross-sectionally U-shaped, for example, made of plastic injection molded covering 25 is provided. The cover 26 is slipped over the connection profile 18 in the assembled state and has U-profile legs 26 which protrude with its free end against the free end of the U-profile legs 19 and are provided on their mutually facing inner sides with mitangeformten retaining strips 27 which along the U Profile legs 26 extend parallel to each other. Of the retaining strips 27 one is provided in the vicinity of the free end of each U-profile leg 26, while the other retaining strips 27 are arranged closer to the root of the U-profile legs 26 and at a clear distance of the lateral height h of the connection profile 18 to the the free leg ends provided retaining strips 27 are spaced. At a distance above the root-near retaining strips 27, the two U-profile legs 26 interconnecting base 28 is provided, which is arranged in the assembled state of the cover 25 at a distance above the base 20, whereby a gap 29 is formed. In the assembled state of the cover 25, in which this is provided by means of its provided on the U-profile legs 26, respectively the lateral portion of the connecting section 18 between them receiving retaining strips 27 form-fitting manner on the connection profile 18 is in the interspace formed thereby 29 serving as a heating heating cable 30, for example in the form of a hot gas line introduced to avoid condensation of the connection profile 18 and fixed by means not shown holding means of the cover 25.

Claims (15)

  1. Thermally insulating wall with a substantially vacuum-tight outer casing (13, 17) and a substantially vacuum-tight inner lining (12, 16) spaced therefrom, wherein the inner lining (12, 16) and the outer casing (13, 17) are vacuum-tightly connected together by a connecting profile member (18), which is formed to be at least approximately U-shaped in cross-section and which together with the outer casing (13, 17) and the inner lining (12, 16) encloses an intermediate space filled with a thermal insulation material (14), wherein the limbs (19) of the connecting profile member (18) engage over the outer casing (13, 17) and the inner lining (12, 16), and wherein the connecting profile member (18) of U-shaped construction has a thin-wall base (20) of membrane-like construction, characterised in that the limbs (19) of the connecting profile member (18) of U-shaped construction have substantially the material thickness of the inner lining (12,16) or of the outer casing (13, 17).
  2. Thermally insulating wall according to claim 1, characterised in that a backing element (24) is provided at the inner lining (12, 16) of the outer casing (13, 17) at the thermal insulation side at least approximately over the length and the height of the limbs (19) of the U-shaped connecting profile member (18).
  3. Thermally insulating wall according to claim 2, characterised in that the backing element (24) consists of a stainless steel strip or an aluminium strip with a material thickness having at least the material thickness of the outer casing (13, 17) or the inner lining (12, 16).
  4. Thermally insulating wall according to claim 1 or 2, characterised in that the U-shaped connecting profile (18) for connecting the outer casing (13, 17) and the inner lining (12, 16) is composed of several length sections (21), the ends (22) - which form abutment points - of which are at least substantially vacuum-tightly connected together.
  5. Thermally insulating wall according to claim 4, characterised in that a support element (23) of U-shaped construction, which bridges over at least the abutment points and on which the ends of the length sections (21) of the connecting profile member (18) rest and are vacuum-tightly connected together, is provided at the abutment points.
  6. Thermally insulating wall according to claim 5, characterised in that the U-shaped support element (23) is fixed by its limbs at the thermal insulation side to the inner lining (12, 16) and to the outer casing (13, 17).
  7. Thermally insulating wall according to one of claims 1 to 6, characterised in that the U-shaped connecting profile member (18) is covered by a U-shaped cover profile member (25), which engages by its limbs (26) over the limbs (19) of the connecting profile member (18) and is retained at this.
  8. Thermally insulating wall according to claim 7, characterised in that the cover profile member (25) has, for its retention, retaining means (27) which are able to retain the cover profile member (25) by its base, while forming a receiving frame (29), at a spacing from the base (20) of the connecting profile member (18).
  9. Thermally insulating wall according to claim 8, characterised in that the retaining means at the cover profile member (25) are constructed as retaining strips (27) arranged at the inner side of its limbs (26) at the spacing of the height of the connecting profile member (18).
  10. Thermally insulating wall according to claim 8, characterised in that the receiving frame (29) serves for introduction of a conductor-like heating means (30) retained at the cover profile member (25).
  11. Thermally insulating wall according to one of claims 1 to 10, characterised in that the inner lining (12, 16), the outer casing (13, 17) and the connecting profile member (18) are made of stainless steel or aluminium-coated plastics material.
  12. Thermally insulating wall according to claim 1, characterised in that the thermal insulation material is formed from open-cell polymer foam, which is heated to a temperature lying above its glass transition temperature and is compressed under pressure at this temperature.
  13. Refrigerating appliance with a thermally insulating housing (10) and at least one door (15) of thermally insulating construction, characterised in that the wall of the housing (10) and the door (25) are constructed according to one of claims 1 to 12.
  14. Domestic oven with an oven muffle surrounding a baking chamber and of thermally insulating construction, characterised in that the wall of the oven muffle is constructed according to one of claims 1 to 12.
  15. Water-conducting domestic appliance, such as washing machine or dishwasher, with a housing of thermally insulating construction, characterised in that the wall of the housing is constructed in accordance with one of claims 1 to 12.
EP00947990A 1999-07-23 2000-07-21 Heat-insulating wall Expired - Lifetime EP1208339B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29912917U 1999-07-23
DE29912917U DE29912917U1 (en) 1999-07-23 1999-07-23 Insulating wall
PCT/EP2000/007031 WO2001007848A1 (en) 1999-07-23 2000-07-21 Heat-insulating wall

Publications (2)

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EP00947990A Expired - Lifetime EP1208339B1 (en) 1999-07-23 2000-07-21 Heat-insulating wall

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CN (1) CN1318813C (en)
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DE (2) DE29912917U1 (en)
ES (1) ES2290047T3 (en)
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US8857931B2 (en) 2010-10-28 2014-10-14 Lg Electronics Inc. Refrigerator with vacuum space
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Also Published As

Publication number Publication date
US20020100250A1 (en) 2002-08-01
CN1364229A (en) 2002-08-14
TR200200104T2 (en) 2002-05-21
CN1318813C (en) 2007-05-30
ES2290047T3 (en) 2008-02-16
US6725624B2 (en) 2004-04-27
EP1208339A1 (en) 2002-05-29
BR0012699A (en) 2002-04-09
DE29912917U1 (en) 1999-11-18
DE50014549D1 (en) 2007-09-20
AU6159200A (en) 2001-02-13
ATE369531T1 (en) 2007-08-15
WO2001007848A1 (en) 2001-02-01

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