EP1481207B1 - Inner part for a refrigerating device - Google Patents

Inner part for a refrigerating device Download PDF

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Publication number
EP1481207B1
EP1481207B1 EP03704551A EP03704551A EP1481207B1 EP 1481207 B1 EP1481207 B1 EP 1481207B1 EP 03704551 A EP03704551 A EP 03704551A EP 03704551 A EP03704551 A EP 03704551A EP 1481207 B1 EP1481207 B1 EP 1481207B1
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EP
European Patent Office
Prior art keywords
wall
plastics material
surface layer
refrigerating appliance
plastics
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
EP03704551A
Other languages
German (de)
French (fr)
Other versions
EP1481207A1 (en
Inventor
Mario Kaiser
Manfred Strobel
Günter Gomoll
Günther Hahn
Hans-Markus Roth
Thomas Zeiler
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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Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1481207A1 publication Critical patent/EP1481207A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/065—Details
    • F25D23/066—Liners
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/041—Treating air flowing to refrigeration compartments by purification
    • F25D2317/0415—Treating air flowing to refrigeration compartments by purification by deodorizing

Definitions

  • the invention relates to a refrigeration device having a housing having an outer wall and an inner wall.
  • a refrigerator having an outer and an inner wall housing in which the metal inner wall is coated with a material containing silver which acts as a sterilizer.
  • the subsequent coating of the metallic inner wall is expensive.
  • the invention has for its object to design a refrigerator in a simple and cost-saving manner biocidal in its interior.
  • the inner wall of the housing itself is made by deep drawing from a sheet-like plastic laminate comprising a carrier layer and a surface layer facing the interior of the housing, in which 'latter silver particles are embedded. This requires no coating and no additional installations to produce a biocidal effect in the interior of the refrigerator. Since the silver is only in the surface layer, the consumption of expensive silver is low.
  • the invention also provides a method for producing a refrigeration device according to the invention, which is the subject of claim 5.
  • the active substance ie the silver
  • the active substance is preferably embedded in a plastic matrix.
  • a refrigerator in particular a refrigerator, comprises a heat-insulating housing which surrounds a cooled interior and can be closed by a door.
  • Housing and door are constructed in the same way from an outer wall, e.g. made of painted sheet metal, an inner wall, which is made by deep drawing of plastic sheet material, and introduced into a space between the inner and outer wall insulating foam filling. Since this structure is well known, it need not be explained here with reference to a figure.
  • the inner wall of the housing is provided in a refrigerator according to the invention with an effective against microbes and / or fungi equipment.
  • the inner wall has a two-layer structure with a carrier layer substantially free of the active chemical substance facing the insulating foam layer and one with the chemical substance, i. the silver, acted surface layer, which faces the interior of the refrigerator.
  • a web of plastic sheet is first produced by co-extruding two lots of raw material, a charge-forming batch of a plastic material or material mixture substantially free of silver, i. the substance contains traces which are insufficient for biocidal and fungicidal action, and a second batch which contains the same plastic material or material mixture applied with the active chemical substance and forms the surface layer.
  • the flat material web is deep-drawn and disassembled in a known manner to form the inner wall of the housing and possibly also the inner wall of the door.
  • the thickness of the surface layer produced during coextrusion is such that even after deep drawing a closed surface layer remains with a material thickness required for a long-term biocidal and / or fungicidal action.
  • the interior of the refrigerator contains various fittings, such as refrigerated goods for mounting on the housing, refrigerated goods for mounting on the inner door wall, pull-out boxes, trays, etc ..
  • the refrigerated goods mounted on the housing are constructed of glass panes, which are enclosed in plastic frame elements. These frame members may be on the edges of the disc plugged injection molded parts or be formed by molding the edges of the disc directly to this.
  • the pull-out boxes and other boxes and trays mounted in the interior of the refrigerator, the refrigerated goods carriers and other accessories mounted in the door are also plastic injection-molded parts.
  • frame members and other injection-molded parts can be made of synthetic resin compositions, as in the embodiments of EP 0 228 063 B1 described, be made.

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)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Refrigerator Housings (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Resistance Heating (AREA)
  • Inorganic Insulating Materials (AREA)
  • Secondary Cells (AREA)
  • Lubricants (AREA)
  • Passenger Equipment (AREA)

Abstract

An inner part for a refrigerating device, such as an inner wall, a refrigerating item support, or similar item ideally should be easy to clean. At least a surface of the inner part is provided with effective protection against microbes and/or fungi. Because the inner part inhibits the growth of microbes and/or fungi, it is easier to clean and maintain.

Description

Die Erfindung bezieht sich auf ein Kältegerät mit einem eine Außenwand und eine Innenwand aufweisenden Gehäuse.The invention relates to a refrigeration device having a housing having an outer wall and an inner wall.

Die feuchte Atmosphäre im Innenraum eines solchen Kältegerätes, insbesondere bei Kühlschränken, sowie sich niederschlagendes Kondenswasser begünstigen das Wachstum von Bakterien, Schimmel- oder anderen Pilzen, die an Stellen des Kältegerätes, die schlecht zu erreichen und zu reinigen sind, unappetitliche dunkle Beläge bilden können.The humid atmosphere in the interior of such a refrigerator, especially in refrigerators, as well as precipitating condensation promote the growth of bacteria, mold or other fungi that can form unappetizing dark deposits in places of the refrigerator, which are difficult to reach and clean.

Bei der Konstruktion eines Kältegerätes ist man im allgemeinen bestrebt, die Oberflächen des Innenraums möglichst ohne Fugen und spitze Winkel auszubilden, so dass ein Benutzer derartige Beläge mit möglichst geringem Aufwand entfernen kann. Völlig vermeidbar sind solche Fugen jedoch nicht, insbesondere an Stellen, wo verschiedene Innenteile des Kältegerätes aneinanderstoßen. Die Reinigung solcher Fugen ist extrem arbeitsaufwendig.In the construction of a refrigerator, it is generally endeavor to form the surfaces of the interior as possible without joints and acute angles, so that a user can remove such coverings with the least possible effort. However, such joints are not completely avoidable, especially in places where different internal parts of the refrigerator abut one another. The cleaning of such joints is extremely laborious.

Aus der US-PS 2 245 737 ist ein Kühlschrank mit einer eine Außen- und eine Innenwand aufweisenden Gehäuse bekannt, bei dem die aus Metall hergestellte Innenwand mit einem Material beschichtet ist, das Silber enthält und sterilisierend wirkt. Das nachträgliche Beschichten der metallischen Innenwand ist aufwendig.From the U.S. Patent 2,245,737 For example, a refrigerator is known having an outer and an inner wall housing in which the metal inner wall is coated with a material containing silver which acts as a sterilizer. The subsequent coating of the metallic inner wall is expensive.

Aus der JP 2001 235265 ist ein Kältebehälter bekannt, der eine aus einer äußeren und einer inneren Kunststoffplatte mit dazwischengefügtem Wärmeisolationsmaterial bestehende Wand aufweist, wobei die innere Platte mit einem Material beschichtet ist, das einen antibakteriellen oder fungiziden Wirkstoff enthält. Auch bei diesem Kältebehälter ist das Beschichten der Wand umständlich und aufwendig.From the JP 2001 235265 For example, there is known a refrigeration container having a wall made of an outer and an inner plastic plate with thermal insulation material interposed therebetween, the inner plate being coated with a material containing an antibacterial or fungicidal active ingredient. Even with this cold container, the coating of the wall is cumbersome and expensive.

Aus der WO 00/64259 ist eine aus steifem Kunststoffschaum bestehende Kühlbox bekannt, in deren Wandmaterial antimikrobielle, Silberkationen enthaltende Zeolithpartikel eingeschlossen sind. Dabei werden die Zeolithpartikel entweder dem Schaumstoff vor dem Aufschäumen beigesetzt oder auf die zum Schäumen dienende Form vor dem Schäumen aufgestrichen. Im ersten Fall ist der Verbrauch an teuerem Silber hoch; im letzteren Fall ist das Bestreichen der Form vor jedem Schäumvorgang umständlich und kostspielig.From the WO 00/64259 is known from rigid plastic foam cool box, in the wall material antimicrobial, silver cations containing zeolite particles are included. In this case, the zeolite particles are either added to the foam before foaming or brushed onto the foaming mold prior to foaming. In the first case, the consumption of expensive silver is high; In the latter case, brushing the mold before each foaming process is cumbersome and costly.

Aus der WO 99/47595 ist es bekannt, u.a. Einbauten für Kühlschränke aus einem flächigen, durchsichtigen oder durchscheinenden Kunststofflaminat herzustellen, das eine Trägerschicht und eine mit dieser koextrudierte, relativ dünne Schicht aufweist, die einen bioziden Wirkstoff enthält. Dabei bestehen die beiden Schichten aus unterschiedlichen Kunststoffmaterialien.From the WO 99/47595 It is known, inter alia, to produce internals for refrigerators made of a flat, transparent or translucent plastic laminate, which has a carrier layer and a relatively thin layer coextruded therewith which contains a biocidal active substance. The two layers consist of different plastic materials.

Aus der EP 629 498 A1 ist es schließlich bekannt, ein koextrudiertes Kunststofflaminat durch Tiefziehen zu einem Kühlschrank-Innenteil zu verformen.From the EP 629 498 A1 Finally, it is known to deform a coextruded plastic laminate by deep drawing to a refrigerator inner part.

Der Erfindung liegt die Aufgabe zugrunde, ein Kältegerät auf einfache und kostensparende Weise in seinem Innenraum biozid auszugestalten.The invention has for its object to design a refrigerator in a simple and cost-saving manner biocidal in its interior.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst.This object is achieved by the features of claim 1.

Bei dem erfindungsgemäßen Kältegerät ist die Innenwand des Gehäuses selbst durch Tiefziehen aus einem flächigen Kunststofflaminat hergestellt, das eine Trägerschicht und eine dem Innenraum des Gehäuses zugewandte Oberflächenschicht umfasst, in welch' letztere Silberpartikel eingebettet sind. Dadurch bedarf es keiner Beschichtung und keiner zusätzlichen Einbauten, um im Innenraum des Kältegeräts eine biozide Wirkung zu erzeugen. Da sich das Silber nur in der Oberflächenschicht befindet, ist der Verbrauch an teurem Silber gering.In the refrigerator according to the invention, the inner wall of the housing itself is made by deep drawing from a sheet-like plastic laminate comprising a carrier layer and a surface layer facing the interior of the housing, in which 'latter silver particles are embedded. This requires no coating and no additional installations to produce a biocidal effect in the interior of the refrigerator. Since the silver is only in the surface layer, the consumption of expensive silver is low.

Die Erfindung gibt außerdem ein Verfahren zum Herstellen eines erfindungsgemäßen Kältegeräts an, das Gegenstand des Anspruchs 5 ist.The invention also provides a method for producing a refrigeration device according to the invention, which is the subject of claim 5.

Die wirksame Substanz, d.h. das Silber, ist vorzugsweise in eine Kunststoffmatrix eingebettet.The active substance, ie the silver, is preferably embedded in a plastic matrix.

Weitere Merkmale und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung.Further features and advantages of the present invention will become apparent from the following description.

Ein Kältegerät, wie insbesondere ein Kühlschrank, umfasst ein wärmeisolierendes Gehäuse, das einen gekühlten Innenraum umgibt und mit einer Tür verschließbar ist. Gehäuse und Tür sind in gleicher Weise aufgebaut aus einer Außenwand, z.B. aus lackiertem Blech, einer Innenwand, die durch Tiefziehen aus Kunststoff-Flachmaterial hergestellt ist, und einer in einen Zwischenraum zwischen Innen- und Außenwand eingebrachten isolierenden Schaumfüllung. Da dieser Aufbau allgemein bekannt ist, braucht er hier nicht anhand einer Figur erläutert zu werden.A refrigerator, in particular a refrigerator, comprises a heat-insulating housing which surrounds a cooled interior and can be closed by a door. Housing and door are constructed in the same way from an outer wall, e.g. made of painted sheet metal, an inner wall, which is made by deep drawing of plastic sheet material, and introduced into a space between the inner and outer wall insulating foam filling. Since this structure is well known, it need not be explained here with reference to a figure.

Die Innenwand des Gehäuses ist bei einem efindungsgemäßen Kühlschrank mit einer gegen Mikroben und/oder Pilze wirksamen Ausrüstung versehen. Die Innenwand hat einen Zweischicht-Aufbau mit einer von der wirksamen chemischen Substanz im Wesentlichen freien Trägerschicht, die der Isolierschaumschicht zugewandt ist, und einer mit der chemischen Substanz, d.h. dem Silber, beaufschlagten Oberflächenschicht, die dem Innenraum des Kältegerätes zugewandt ist.The inner wall of the housing is provided in a refrigerator according to the invention with an effective against microbes and / or fungi equipment. The inner wall has a two-layer structure with a carrier layer substantially free of the active chemical substance facing the insulating foam layer and one with the chemical substance, i. the silver, acted surface layer, which faces the interior of the refrigerator.

Zur Herstellung der Innenwand wird zunächst eine Bahn aus Kunststoff-Flachmaterial durch Koextrusion zweier Rohmaterialchargen erzeugt, einer die Trägerschicht bildenden Charge aus einem Kunststoffmaterial oder -materialgemisch, das im Wesentlichen frei von Silber ist, d.h. die Substanz allenfalls in für eine biozide und fungizide Wirkung nicht ausreichenden Spuren enthält, und einer zweiten Charge, die das gleiche Kunststoffmaterial oder - materialgemisch, beaufschlagt mit der wirksamen chemischen Substanz, enthält und die Oberflächenschicht bildet.To produce the inner wall, a web of plastic sheet is first produced by co-extruding two lots of raw material, a charge-forming batch of a plastic material or material mixture substantially free of silver, i. the substance contains traces which are insufficient for biocidal and fungicidal action, and a second batch which contains the same plastic material or material mixture applied with the active chemical substance and forms the surface layer.

Die Flachmaterialbahn wird an sich bekannter Weise tiefgezogen und zerlegt, um die Gehäuseinnenwand und gegebenenfalls auch die Türinnenwand zu formen. Die Dicke der beim Koextrudieren erzeugten Oberflächenschicht ist so bemessen, dass auch nach dem Tiefziehen eine geschlossene Oberflächenschicht mit einer für eine langfristige biozide und/oder fungizide Wirkung erforderlichen Materialdicke bestehen bleibt.The flat material web is deep-drawn and disassembled in a known manner to form the inner wall of the housing and possibly also the inner wall of the door. The thickness of the surface layer produced during coextrusion is such that even after deep drawing a closed surface layer remains with a material thickness required for a long-term biocidal and / or fungicidal action.

Der Innenraum des Kältegeräts enthält diverse Einbauten, wie etwa Kühlgutträger für die Montage am Gehäuse, Kühlgutträger für die Montage an der Türinnenwand, Auszugkästen, Schalen, etc.. Die am Gehäuse montierten Kühlgutträger sind aufgebaut aus Glasscheiben, die in Rahmenelemente aus Kunststoff eingefasst sind. Diese Rahmenelemente können auf die Ränder der Scheibe aufgesteckte Spritzgussteile sein oder durch Umspritzen der Ränder der Scheibe direkt an dieser gebildet sein. Auch die Auszugkästen und sonstige in dem Innenraum des Kühlschranks angebrachte Kästen und Schalen, die in der Tür montierten Kühlgutträger und anderes Zubehör, sind Spritzgussteile aus Kunststoff.The interior of the refrigerator contains various fittings, such as refrigerated goods for mounting on the housing, refrigerated goods for mounting on the inner door wall, pull-out boxes, trays, etc .. The refrigerated goods mounted on the housing are constructed of glass panes, which are enclosed in plastic frame elements. These frame members may be on the edges of the disc plugged injection molded parts or be formed by molding the edges of the disc directly to this. The pull-out boxes and other boxes and trays mounted in the interior of the refrigerator, the refrigerated goods carriers and other accessories mounted in the door are also plastic injection-molded parts.

Auch diese Rahmenelemente und andere Spritzgussteile können aus Kunstharz-Zusammensetzungen, wie in den Ausführungsbeispielen von EP 0 228 063 B1 beschrieben, gefertigt sein.These frame members and other injection-molded parts can be made of synthetic resin compositions, as in the embodiments of EP 0 228 063 B1 described, be made.

Claims (6)

  1. Refrigerating appliance with a housing having an outer wall and an inner wall, wherein the inner wall is formed from a web of divided-up plastics sheet material by deep drawing, wherein the web is produced by coextrusion of two raw material charges, of which a first charge of a plastics material or plastics material mixture is admixed with a silver compound effective against microbes and/or fungi and forms a surface layer, which faces the interior space of the refrigerating appliance, of the inner wall and a second charge, which contains the same plastics material or plastics material mixture is substantially free of the silver compound and forms a load-bearing layer of the inner wall.
  2. Refrigerating appliance according to claim 1, characterised in that thickness of the surface layer produced in the coextrusion is so dimensioned that a closed surface layer remains after the deep drawing.
  3. Refrigerating appliance according to one of claims 1 and 2, characterised in that the effective silver compound is embedded in a plastics material matrix.
  4. Refrigerating appliance according to any one of claims 1 to 3, characterised in that the silver ions are exchangeably bound in a zeolite material.
  5. Method of producing the inner wall of the housing of a refrigerating appliance, comprising the steps:
    a) producing a web of plastics flat material by coextusion of two raw material charges, namely a charge, which forms a load-bearing layer, of plastics material or plastics material mixture which is substantially free of a silver compound effective against microbes and/or fungi, and a second charge, which contains the same plastics material or plastics material mixture, is loaded with the silver compound and forms a surface layer facing the interior space of the cooling appliance; and
    b) divided-up the web of flat plastics material and deep drawing so as to form it into the inner wall.
  6. Method according to claim 5, characterised by dimensioning the thickness of the surface layer, which is produced in the coextrusion, in such a manner that even after the deep drawing a closed surface layer with a material thickness required for a long-term microbiocidal and/or fungicidal action remains.
EP03704551A 2002-02-25 2003-02-05 Inner part for a refrigerating device Expired - Lifetime EP1481207B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10208066A DE10208066A1 (en) 2002-02-25 2002-02-25 Inner part for a refrigerator
DE10208066 2002-02-25
PCT/EP2003/001135 WO2003071205A1 (en) 2002-02-25 2003-02-05 Inner part for a refrigerating device

Publications (2)

Publication Number Publication Date
EP1481207A1 EP1481207A1 (en) 2004-12-01
EP1481207B1 true EP1481207B1 (en) 2011-08-17

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ID=27674958

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EP03704551A Expired - Lifetime EP1481207B1 (en) 2002-02-25 2003-02-05 Inner part for a refrigerating device

Country Status (10)

Country Link
US (1) US10465973B2 (en)
EP (1) EP1481207B1 (en)
CN (1) CN100430678C (en)
AT (1) ATE520938T1 (en)
BR (1) BR0307231A (en)
DE (1) DE10208066A1 (en)
ES (1) ES2369531T3 (en)
PL (1) PL202178B1 (en)
RU (1) RU2313050C2 (en)
WO (1) WO2003071205A1 (en)

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PL202178B1 (en) 2009-06-30
BR0307231A (en) 2004-12-07
RU2004123967A (en) 2006-01-27
DE10208066A1 (en) 2003-09-04
CN1639526A (en) 2005-07-13
CN100430678C (en) 2008-11-05
WO2003071205A1 (en) 2003-08-28
US20050042247A1 (en) 2005-02-24
PL369897A1 (en) 2005-05-02
US10465973B2 (en) 2019-11-05
ATE520938T1 (en) 2011-09-15
EP1481207A1 (en) 2004-12-01
ES2369531T3 (en) 2011-12-01

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