EP2461125B1 - Refrigeration and/or freezer device - Google Patents

Refrigeration and/or freezer device Download PDF

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Publication number
EP2461125B1
EP2461125B1 EP11009401.8A EP11009401A EP2461125B1 EP 2461125 B1 EP2461125 B1 EP 2461125B1 EP 11009401 A EP11009401 A EP 11009401A EP 2461125 B1 EP2461125 B1 EP 2461125B1
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EP
European Patent Office
Prior art keywords
evaporator
evaporators
refrigeration
freezer device
refrigerant
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.)
Not-in-force
Application number
EP11009401.8A
Other languages
German (de)
French (fr)
Other versions
EP2461125A3 (en
EP2461125A2 (en
Inventor
Thomas Dipl.-Ing. Ertel
Matthias Wiest
Holger Dipl.-Ing. Jendrusch
Didier Siegel
Michael Schick
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.)
Liebherr Hausgeraete Ochsenhausen GmbH
Original Assignee
Liebherr Hausgeraete Ochsenhausen GmbH
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Filing date
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Publication of EP2461125A2 publication Critical patent/EP2461125A2/en
Publication of EP2461125A3 publication Critical patent/EP2461125A3/en
Application granted granted Critical
Publication of EP2461125B1 publication Critical patent/EP2461125B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • 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
    • F25D23/061—Walls with conduit means
    • 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
    • F25D23/068—Arrangements for circulating fluids through the insulating material
    • 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
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators

Definitions

  • the present invention relates to a refrigerator and / or freezer with at least one compartment to be cooled, which serves to hold refrigerated and / or frozen goods, and with at least one refrigerant circuit, wherein the or the refrigerant circuits comprise at least two evaporators, which in the operation of the or the refrigerant circuits are flowed through by refrigerant.
  • evaporator types are mainly used, namely free-hanging rear wall evaporator, usually made of aluminum sheet, foamed evaporator, that is, the evaporator is foam-mounted on the flat rear wall or the rear wall of the inner container, and finned evaporator, which generally in conjunction with a fan or be installed in the area of the device ceiling.
  • EP 1 541 944 A1 discloses a two-door refrigerator with refrigeration system, a fresh food compartment, a frozen-food compartment, and two evaporators.
  • DE 29 17 721 discloses a refrigerator with a refrigerant circuit comprising two evaporators, which are flowed through in the operation of refrigerant and which are arranged such that they cool the same to be cooled compartment of the refrigerator and / or freezer during operation of the refrigerant circuit.
  • the present invention has the object of developing a refrigerator and / or freezer of the type mentioned in such a way that its efficiency is increased compared to known devices.
  • This object is achieved by a refrigerator and / or freezer with the features of claim 1.
  • the two evaporators are arranged such that they cool one and the same compartment of the refrigerator and / or freezer during operation of the refrigerant circuits or. In this way, an increase in efficiency can be achieved by enlarging the evaporator surface and by improved heat transfer.
  • the evaporators are arranged so that the useful content of the compartment in question compared to known devices is not or only slightly reduced.
  • the two evaporators can be of the same type of evaporator and / or have the same mounting arrangement or be of different types of evaporators and / or have a different mounting arrangement.
  • a combination of several identical or different types of evaporator and / or mounting arrangements (free-hanging, foamed-in) thus comes into consideration. It is conceivable, for example, that one or more than one free-hanging evaporator and / or one or more than one foamed evaporator are used and / or that at least one free-hanging evaporator and at least one foamed evaporator are used, wherein the at least two evaporators for cooling the same compartment be used.
  • the two evaporators are arranged offset to one another in the depth direction of the refrigerator and / or freezer.
  • An exemplary embodiment of the invention comprises a refrigerator and / or freezer with one or more foamed evaporators and with one or more free-hanging evaporators or a cooling and / or Freezer, for example, has only foamed or only free-hanging evaporator.
  • the evaporator can be freely suspended or even foamed.
  • evaporator types are, for example, tube-on-sheet, Z-Bond, roll-bond or wire-on-tube evaporator into consideration.
  • the at least two evaporators are flowed through in succession or parallel to one another in the at least one refrigerant circuit and / or that the at least two evaporators are part of the same or different refrigerant circuits.
  • FIG. 1 shows by reference numeral 10 an inner container which limits the compartment to be cooled at the top, bottom, in both side areas and in the rear area.
  • the front side of the compartment is closed by a door, not shown.
  • the reference numeral 20 an outer wall of the device or an outer housing of the device is shown, which is also located on the bottom, top, in the rear area and in both side areas.
  • the reference numeral 40 denotes a foamed evaporator, which is located completely in the foaming 30, and by the reference numeral 50, a free-hanging evaporator.
  • the foamed-in evaporator 40 can be designed as a tube-on-plate evaporator 40 and the freely suspended evaporator 50 can be configured as a roll-bond or Z-bond evaporator.
  • the invention is not limited to the use of two evaporators 40, 50. Also, more than two foamed and / or free-hanging evaporators can be used. Like this FIG. 1 it can be seen, the evaporator 40 is in the foaming, that is, behind the inner container 20 and the free-hanging evaporator 50 in the interior, that is, in the area surrounded by the inner container 10 cooled area, which serves to hold refrigerated and / or frozen.
  • evaporator types instead of the mentioned evaporator types, other evaporators can be used, that is, the invention is not limited to the evaporator types shown.
  • evaporator 40, 50 can be flowed through in succession of refrigerant or be acted upon in parallel with refrigerant. They can be part of a common refrigerant circuit or even of two separate refrigerant circuits. This is true not only for the illustrated embodiment according to FIG. 1 but basically within the scope of the present invention.
  • the charging of the evaporators 40, 50 can be regulated by one or more solenoid valves.
  • FIG. 2 shows an embodiment which differs from the embodiment according to FIG. 1 differs in that no foamed evaporator is provided. Rather, two parallel arranged and mutually offset in the depth direction freely suspended evaporator are provided here, which are flowed through successively or in parallel by refrigerant and are part of a common or different refrigerant circuits. These can also be regulated with regard to their flow with refrigerant by solenoid valves.
  • the two evaporators can be made identical or different.
  • versions of evaporators such as tube-on-sheet, roll-bond, Z-Bond are possible. Of course, these types of evaporators can also be combined.
  • the two free-hanging evaporators do not have to be arranged in parallel. An arrangement at an angle to each other is conceivable.
  • the two evaporators 50 are arranged freely suspended, that is not foamed.
  • a combination of the embodiments according to FIG. 1 and 2 is conceivable, that is, it may be a combination of one or more foamed and provided by one or more free-hanging evaporators, wherein the evaporator may be of the same type or of different types. It is conceivable to use the same types of free-hanging evaporator and the same types of foamed evaporator. It is also possible to use different types of free-hanging and / or different types of foamed evaporator.
  • the one or more foamed evaporator or at least one or all foamed evaporator may be of the same type as the one or more free-hanging evaporator or at least one or all foamed evaporator, but also different evaporator types are conceivable. Otherwise, in FIG. 2 as well as in the following figures, the same reference numerals as in FIG. 1 used, provided they are the same or functionally identical parts.
  • FIG. 3 shows a non-inventive embodiment with a freely suspended evaporator 50 having a first portion 51 which extends vertically and, for example, parallel to the rear wall of the inner container 10 and which has a horizontal portion 52 which is horizontal and parallel to the ceiling in the embodiment shown here of the inner container 10 extends.
  • the evaporator 50 may be designed as a pure tube evaporator or as a sheet evaporator, such as roll-bond or Z-bond evaporator.
  • the evaporator 50 according to FIG. 3 is thus characterized by having an area 51 located in the rear of the compartment and an upper area 52 located near the ceiling of the compartment.
  • the areas 51 and 52 need not necessarily be arranged parallel to the adjacent inner container walls.
  • FIG. 5 An oblique arrangement or an angular arrangement such as in FIG. 5 is shown is conceivable.
  • a fan which can be designed as an axial, radial, diagonal, tangential, etc. fan and bears the reference numeral 60.
  • This fan 60 is arranged so that during operation it causes an air flow over a partial area or over the entire evaporator 50. This air flow is then passed into the interior to be cooled, which is bounded by the inner container 10 and the door, not shown. It thus finds in the in FIG. 3 illustrated embodiment, a dynamic cooling of the refrigerator or freezer instead.
  • the reference numeral 70 denotes a cover, which is located both in the region of the horizontal portion 52 and in the region of the vertical portion 51 of the evaporator 50 is located. Like this FIG. 3 is apparent, the cover 70 extends in its vertical portion 71 parallel to the vertical portion 51 of the evaporator and with its upper portion 72 obliquely rising toward the front and at an angle to the horizontal evaporator section 52. This embodiment of the cover 70 causes the Users when opening the door and looking into the interior of the evaporator 50 does not see, but only looks at the cover 70, which can be designed according visually appealing.
  • the fan 60 is also located behind the cover 70.
  • the purpose of the cover 70 is to ensure a controlled guidance of the air flow provided by the fan 60 and to prevent the condensate dripping from the evaporator from being visible to the user.
  • the condensate is thus initially collected by the cover 70 and then derived as possible not visible at a suitable location for the user.
  • the evaporator 50 may have a recess 55, which serves for mounting the fan 60 and creates space for the installation of the fan 60.
  • the evaporator 50 may for example be designed as a pure tube evaporator, it being conceivable that the tubes of the tube evaporator are connected to increase the surface with a metal sheet, preferably made of aluminum.
  • the evaporator 50 is also conceivable to carry out the evaporator 50 as a plate evaporator, such as, for example, as a roll-bond or Z-bond evaporator.
  • the evaporator has not shown in the figures holes, apertures or the like, which allows dripping of the condensate from the top of the evaporator 50 to the cover 70.
  • Condensate formed above and extending substantially horizontally or obliquely to the horizontal evaporator section 52 can drain from the top of this section and dripping onto the cover in particular on the horizontal portion or inclined portion 72. This has the advantage that the formation of larger amounts of condensate and the resulting icing of the upper evaporator surface 52 in the area of the device ceiling is prevented.
  • the embodiment according to FIG. 5 differs from the embodiment according to FIG. 3 in that the upper portion 52 of the evaporator 50 is not made horizontally but inclined upward towards the front, as is apparent from FIG. 5 evident.
  • the cover 70 and the evaporator 50 run according to FIG. 4 and 5 in total, that is, in both sections 51, 71, 52, 72 parallel to each other.
  • a difference from the execution according to FIG. 3 is that according to FIG. 5 the fan 60 extends above the horizontal or inclined evaporator section 52, while in FIG FIG. 3 not the case.
  • the fan 60 is located between evaporator 50 and cover 70 and in particular in a corner region of the horizontal and the vertical evaporator section 51, 52.
  • the fan 60 is in the corner region of the inner container, that is in the area between the container ceiling and the inner container rear wall.
  • the fan can be located between the inner container and the evaporator or between the evaporator and the cover.
  • FIG. 6 shows a further embodiment.
  • a foamed tube evaporator 80 is provided as the evaporator, which extends to increase the surface in channels of the inner container 10.
  • the channels of the inner container 10 are designed to be convex from the perspective of the cooling or freezing compartment, that is to say they extend towards the cooled interior.
  • the tube evaporator 80 Partially housed in these channels.
  • the channels are in the embodiment shown here, both on the rear wall of the inner container 10 and in the ceiling region of the inner container 10 (see reference numerals 80a and 80b).
  • the tubes of the tube evaporator 80 preferably run horizontally on the rear wall and in the area of the device ceiling in the direction of the device depth or also in the direction of the device width.
  • FIG. 6 shows an embodiment in which the tubes 80a and 80b of the tube evaporator 80 extend in device width
  • FIG. 7 shows an embodiment in which the tubes 80c of the tube evaporator 80 run in the ceiling area in the direction of the device depth and in the region of the rear wall preferably horizontal (reference numeral 80b).
  • this may be provided with an aluminum sheet which is glued thereto.
  • an aluminum sheet can thus be glued.
  • an aluminum adhesive tape into consideration.
  • a thermal paste may be provided which is located in the channels.
  • the evaporator tubes of the tube evaporator 80 may be made of steel and may already be inserted in the manufacture of the container 10 in the drawing process, whereby the manufacturing process simplified.
  • the channels of the inner container are designed with one or more undercuts, with the result that the tube evaporator is well and reliably secured in the channel or channels.
  • the channels meander and are open in the 180 ° arches to the outside to compensate for tolerances of the curved tube evaporator tubes of the tube evaporator 80.
  • the occurring tolerance increases with the distance to the tube beginning of the tube evaporator 80th
  • the channel direction can run horizontally or vertically on the rear wall and in the direction of the device depth or width on the device ceiling.
  • the evaporator which can extend over the back wall and over the ceiling area, as he for example in Figure 3-7 can be seen, may be made in one piece or even consist of several parts, which communicate with each other for example by a Lokringitati.
  • the free-hanging evaporator is designed as a wire-on-tube evaporator.
  • the efficiency of a refrigerator and / or freezer is increased.
  • the overall visual impression of the refrigerator or freezer area improves because the evaporators are designed and integrated into the appliance so that no condensate can form on visible areas.

Description

Die vorliegende Erfindung betrifft ein Kühl- und/oder Gefriergerät mit wenigstens einem zu kühlenden Kompartiment, das zur Aufnahme von Kühl- und/oder Gefriergut dient, und mit wenigstens einem Kältemittelkreislauf, wobei der oder die Kältemittelkreisläufe zumindest zwei Verdampfer umfassen, die im Betrieb des oder der Kältemittelkreisläufe von Kältemittel durchströmt werden.The present invention relates to a refrigerator and / or freezer with at least one compartment to be cooled, which serves to hold refrigerated and / or frozen goods, and with at least one refrigerant circuit, wherein the or the refrigerant circuits comprise at least two evaporators, which in the operation of the or the refrigerant circuits are flowed through by refrigerant.

Aus dem Stand der Technik sind zahlreiche unterschiedliche Anordnungen und Ausführungen von Verdampfern bekannt, die Bestandteil eines Kältemittelkreislaufes bilden und zur Kühlung eines Gefrier- und/oder Kühlkompartimentes dienen.Numerous different arrangements and designs of evaporators are known from the prior art, which form part of a refrigerant circuit and serve to cool a freezer and / or Kühlkompartimentes.

Bislang werden hauptsächlich drei Verdampfertypen eingesetzt, nämlich freihängende Rückwandverdampfer, zumeist aus Aluminiumblech hergestellt, eingeschäumte Verdampfer, das heißt der Verdampfer wird schaumseitig auf der flachen Geräterückwand bzw. der Rückwand des Innenbehälters befestigt, sowie Lamellenverdampfer, die im allgemeinen in Verbindung mit einem Ventilator an oder im Bereich der Gerätedecke eingebaut werden.So far, three evaporator types are mainly used, namely free-hanging rear wall evaporator, usually made of aluminum sheet, foamed evaporator, that is, the evaporator is foam-mounted on the flat rear wall or the rear wall of the inner container, and finned evaporator, which generally in conjunction with a fan or be installed in the area of the device ceiling.

EP 1 541 944 A1 offenbart ein zweitüriges Kühlgerät mit Kühlsystem, einem Kühlraum für frische Lebensmittel, einem Kühlraum für gefrorene Lebensmitte, und zwei Verdampfer. DE 29 17 721 offenbart ein Kühlgerät mit einem Kältemittelkreislauf, der zwei Verdampfer umfasst, die im Betrieb von Kältemittel durchströmt werden und die derart angeordnet sind, dass sie im Betrieb des Kältemittelkreislaufs dasselbe zu kühlende Kompartiment des Kühl-und/oder Gefriergerätes kühlen. EP 1 541 944 A1 discloses a two-door refrigerator with refrigeration system, a fresh food compartment, a frozen-food compartment, and two evaporators. DE 29 17 721 discloses a refrigerator with a refrigerant circuit comprising two evaporators, which are flowed through in the operation of refrigerant and which are arranged such that they cool the same to be cooled compartment of the refrigerator and / or freezer during operation of the refrigerant circuit.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Kühl- und/oder Gefriergerät der eingangs genannten Art dahingehend weiterzubilden, dass dessen Effizienz gegenüber bekannten Geräten gesteigert wird.
Diese Aufgabe wird durch ein Kühl- und/oder Gefriergerät mit den Merkmalen des Anspruchs 1 gelöst. Danach ist vorgesehen, dass die zwei Verdampfer derart angeordnet sind, dass sie im Betrieb des oder der Kältemittelkreisläufe ein und dasselbe Kompartiment des Kühl- und/oder Gefriergerätes kühlen. Auf diese Weise lässt sich eine Effizienzsteigerung durch Vergrößerung der Verdampferoberfläche sowie durch einen verbesserten Wärmeübergang erreichen. Vorzugsweise werden die Verdampfer dabei so angeordnet, dass der Nutzinhalt des fraglichen Kompartimentes gegenüber bekannten Geräten nicht oder nur unwesentlich verringert wird.The present invention has the object of developing a refrigerator and / or freezer of the type mentioned in such a way that its efficiency is increased compared to known devices.
This object is achieved by a refrigerator and / or freezer with the features of claim 1. Thereafter, it is provided that the two evaporators are arranged such that they cool one and the same compartment of the refrigerator and / or freezer during operation of the refrigerant circuits or. In this way, an increase in efficiency can be achieved by enlarging the evaporator surface and by improved heat transfer. Preferably, the evaporators are arranged so that the useful content of the compartment in question compared to known devices is not or only slightly reduced.

Die zwei Verdampfer können vom selben Verdampfertyp sein und/oder dieselbe Montageanordnung aufweisen oder auch von unterschiedlichen Verdampfertypen sein und/oder eine unterschiedliche Montageanordnung aufweisen. In Betracht kommt somit eine Kombination von mehreren gleichen oder unterschiedlichen Verdampfertypen und/oder Montageanordnungen (freihängend, eingeschäumt). Denkbar ist es beispielsweise, dass ein oder mehr als ein freihängender Verdampfer und/oder ein oder mehr als ein eingeschäumter Verdampfer eingesetzt werden und/oder dass wenigstens ein freihängender Verdampfer und wenigstens ein eingeschäumter Verdampfer eingesetzt werden, wobei die zumindest zwei Verdampfer zur Kühlung desselben Kompartimentes eingesetzt werden. Erfindungsgemäß ist dabei vorgesehen, dass die zwei Verdampfer in Tiefenrichtung des Kühl- und/oder Gefriergerätes versetzt zueinander angeordnet sind. Eine exemplarische Ausgestaltung der Erfindung umfaßt ein Kühl- und/oder Gefriergerät mit einem oder mehreren eingeschäumten Verdampfern sowie mit einem oder mehreren freihängenden Verdampfern oder auch ein Kühl- und/oder Gefriergerät, das beispielsweise nur eingeschäumte oder nur freihängende Verdampfer aufweist.The two evaporators can be of the same type of evaporator and / or have the same mounting arrangement or be of different types of evaporators and / or have a different mounting arrangement. A combination of several identical or different types of evaporator and / or mounting arrangements (free-hanging, foamed-in) thus comes into consideration. It is conceivable, for example, that one or more than one free-hanging evaporator and / or one or more than one foamed evaporator are used and / or that at least one free-hanging evaporator and at least one foamed evaporator are used, wherein the at least two evaporators for cooling the same compartment be used. According to the invention, it is provided that the two evaporators are arranged offset to one another in the depth direction of the refrigerator and / or freezer. An exemplary embodiment of the invention comprises a refrigerator and / or freezer with one or more foamed evaporators and with one or more free-hanging evaporators or a cooling and / or Freezer, for example, has only foamed or only free-hanging evaporator.

Unter dem Begriff der Montageanordnung ist insbesondere zu verstehen, dass die Verdampfer freihängend oder auch eingeschäumt angeordnet sein können.
Als Verdampfertypen kommen beispielsweise Rohr-auf-Blech, Z-Bond, Roll-Bond oder Draht-auf-Rohr-Verdampfer in Betracht.
In weiterer Ausgestaltung der Erfindung ist vorgesehen, dass die zumindest zwei Verdampfer in dem wenigstens einen Kältemittelkreislauf nacheinander oder parallel zueinander durchströmt werden und/oder dass die zumindest zwei Verdampfer Bestandteil desselben oder unterschiedlicher Kältemittelkreisläufe sind.The term of the mounting arrangement is to be understood in particular that the evaporator can be freely suspended or even foamed.
As evaporator types are, for example, tube-on-sheet, Z-Bond, roll-bond or wire-on-tube evaporator into consideration.
In a further embodiment of the invention, it is provided that the at least two evaporators are flowed through in succession or parallel to one another in the at least one refrigerant circuit and / or that the at least two evaporators are part of the same or different refrigerant circuits.

Weitere Einzelheiten und Vorteile der Erfindung werden anhand der in den Figuren 1 und 2 dargestellten Ausführungsbeispiele erläutert. Es zeigen:

Figur 1 und 2:
Längsschnittdarstellungen durch Kühl- und/oder Gefriergeräte gemäß der vorliegenden Erfindung mit unterschiedlichen Verdampferausführungen,
Figur 3 - 5:
Längsschnittdarstellungen durch Kühl- und/oder Gefriergeräte nicht gemäß der vorliegenden Erfindung mit sich im Deckenbereich und im Rückbereich erstreckendem Verdampfer sowie mit Ventilator und Abdeckung,
Figur 6 und 7:
Längsschnittdarstellungen durch Kühl- und/oder Gefriergeräte nicht gemäß der vorliegenden Erfindung mit im Innenbehälter angeordneten Kanälen zur Aufnahme eines Rohrverdampfers.
Further details and advantages of the invention will be apparent from the in the FIGS. 1 and 2 illustrated embodiments explained. Show it:
FIGS. 1 and 2:
Longitudinal views through refrigerators and / or freezers according to the present invention with different types of evaporators,
FIGS. 3 to 5:
Longitudinal views through refrigerators and / or freezers not according to the present invention with extending in the ceiling area and in the rear area evaporator and fan and cover,
FIGS. 6 and 7:
Longitudinal views through refrigerators and / or freezers not according to the present invention with arranged in the inner container channels for receiving a tube evaporator.

Figur 1 zeigt mit dem Bezugszeichen 10 einen Innenbehälter, der das zu kühlende Kompartiment oben, unten, in beiden Seitenbereichen und im rückwärtigen Bereich begrenzt. Frontseitig wird das Kompartiment durch eine nicht dargestellte Tür verschlossen.
Mit dem Bezugszeichen 20 ist eine Außenwand des Gerätes bzw. ein Außengehäuse des Gerätes dargestellt, das sich ebenfalls auf der Unterseite, Oberseite, im rückwärtigen Bereich sowie in beiden Seitenbereichen befindet. Zwischen Außenwand 20 und Innenbehälter 10 befindet sich eine Ausschäumung 30 beispielsweise aus PU-Schaum, mittels derer der Wärmedurchgang in den Geräteinnenraum gehemmt wird.
Mit dem Bezugszeichen 40 ist ein eingeschäumter Verdampfer gekennzeichnet, der sich vollständig in der Ausschäumung 30 befindet, und mit dem Bezugszeichen 50 ein freihängender Verdampfer. In dem hier dargestellten Ausführungsbeispiel kann der eingeschäumte Verdampfer 40 als Rohr-auf-Blech-Verdampfer 40 ausgeführt sein und der freihängende Verdampfer 50 als Roll-Bond- oder Z-Bond-Verdampfer ausgeführt sein. FIG. 1 shows by reference numeral 10 an inner container which limits the compartment to be cooled at the top, bottom, in both side areas and in the rear area. The front side of the compartment is closed by a door, not shown.
The reference numeral 20, an outer wall of the device or an outer housing of the device is shown, which is also located on the bottom, top, in the rear area and in both side areas. Between outer wall 20 and inner container 10 there is a foaming 30, for example made of PU foam, by means of which the heat transfer is inhibited in the device interior.
The reference numeral 40 denotes a foamed evaporator, which is located completely in the foaming 30, and by the reference numeral 50, a free-hanging evaporator. In the exemplary embodiment illustrated here, the foamed-in evaporator 40 can be designed as a tube-on-plate evaporator 40 and the freely suspended evaporator 50 can be configured as a roll-bond or Z-bond evaporator.

Grundsätzlich ist die Erfindung nicht auf den Einsatz von zwei Verdampfern 40, 50 beschränkt. Auch mehr als zwei eingeschäumte und/oder freihängende Verdampfer können eingesetzt werden. Wie dies aus Figur 1 ersichtlich ist, befindet sich der Verdampfer 40 in der Ausschäumung, das heißt hinter dem Innenbehälter 20 und der freihängende Verdampfer 50 im Innenraum, das heißt in dem durch den Innenbehälter 10 umgebenen gekühlten Bereich, der zur Aufnahme von Kühl- und/oder Gefriergut dient.In principle, the invention is not limited to the use of two evaporators 40, 50. Also, more than two foamed and / or free-hanging evaporators can be used. Like this FIG. 1 it can be seen, the evaporator 40 is in the foaming, that is, behind the inner container 20 and the free-hanging evaporator 50 in the interior, that is, in the area surrounded by the inner container 10 cooled area, which serves to hold refrigerated and / or frozen.

Anstelle der genannten Verdampfertypen können auch andere Verdampfer eingesetzt werden, das heißt die Erfindung ist nicht auf die dargestellten Verdampfertypen beschränkt.Instead of the mentioned evaporator types, other evaporators can be used, that is, the invention is not limited to the evaporator types shown.

Die in Figur 1 dargestellten Verdampfer 40, 50 können nacheinander von Kältemittel durchströmt werden oder auch parallel mit Kältemittel beaufschlagt werden. Sie können Bestandteil eines gemeinsamen Kältemittelkreislaufes oder auch von zwei getrennten Kältemittelkreisläufen sein. Dies gilt nicht nur für die dargestellte Ausführungsform gemäß Figur 1 sondern grundsätzlich im Rahmen der vorliegenden Erfindung.In the FIG. 1 shown evaporator 40, 50 can be flowed through in succession of refrigerant or be acted upon in parallel with refrigerant. They can be part of a common refrigerant circuit or even of two separate refrigerant circuits. This is true not only for the illustrated embodiment according to FIG. 1 but basically within the scope of the present invention.

Die Beaufschlagung der Verdampfer 40, 50 kann durch ein oder mehrere Magnetventile reguliert werden.The charging of the evaporators 40, 50 can be regulated by one or more solenoid valves.

Figur 2 zeigt eine Ausgestaltung, die sich von der Ausführungsform gemäß Figur 1 dadurch unterscheidet, dass kein eingeschäumter Verdampfer vorgesehen ist. Vielmehr sind hier zwei parallel angeordnete und in Tiefenrichtung zueinander versetzte freihängende Verdampfer vorgesehen, die nacheinander oder parallel von Kältemittel durchströmt werden und die Bestandteil eines gemeinsamen oder unterschiedlicher Kältemittelkreisläufe sind. Auch diese können hinsichtlich ihrer Durchströmung mit Kältemittel durch Magnetventile reguliert werden. Für diese Ausführungsform gilt, dass die beiden Verdampfer identisch ausgeführt sein können oder auch unterschiedlich. In Betracht kommen beispielsweise Ausführungen von Verdampfern wie Rohr-auf-Blech, Roll-Bond, Z-Bond. Diese Verdampfertypen können selbstverständlich auch kombiniert werden.
Die beiden freihängenden Verdampfer müssen nicht parallel angeordnet sein. Auch eine Anordnung schräg zueinander ist denkbar.
In dem in Figur 2 dargestellten Ausführungsbeispiel sind die beiden Verdampfer 50 freihängend angeordnet, das heißt nicht eingeschäumt.
Auch eine Kombination der Ausführungsformen gemäß Figur 1 und 2 ist denkbar, das heißt es kann eine Kombination von einem oder mehreren eingeschäumten und von einem oder mehreren freihängenden Verdampfern vorgesehen sein, wobei die Verdampfer vom selben Typ oder auch von unterschiedlichen Typen sein können. Denkbar ist es gleiche Typen der freihängenden Verdampfer und gleiche Typen der eingeschäumten Verdampfer zu verwenden. Auch ist es möglich unterschiedliche Typen freihängender und/oder unterschiedliche Typen eingeschäumter Verdampfer zu verwenden.
Der oder die eingeschäumte Verdampfer bzw. wenigstens ein oder alle eingeschäumten Verdampfer können vom selben Typ sein wie der oder die freihängenden Verdampfer bzw. wenigstens ein oder alle eingeschäumten Verdampfer, jedoch sind jeweils auch unterschiedliche Verdampfertypen denkbar.
Im übrigen sind in Figur 2 sowie auch in den folgenden Figuren die gleichen Bezugszeichen wie in Figur 1 verwendet, sofern es sich um gleiche oder funktionsgleiche Teile handelt. FIG. 2 shows an embodiment which differs from the embodiment according to FIG FIG. 1 differs in that no foamed evaporator is provided. Rather, two parallel arranged and mutually offset in the depth direction freely suspended evaporator are provided here, which are flowed through successively or in parallel by refrigerant and are part of a common or different refrigerant circuits. These can also be regulated with regard to their flow with refrigerant by solenoid valves. For this embodiment applies that the two evaporators can be made identical or different. For example, versions of evaporators such as tube-on-sheet, roll-bond, Z-Bond are possible. Of course, these types of evaporators can also be combined.
The two free-hanging evaporators do not have to be arranged in parallel. An arrangement at an angle to each other is conceivable.
In the in FIG. 2 illustrated embodiment, the two evaporators 50 are arranged freely suspended, that is not foamed.
Also a combination of the embodiments according to FIG. 1 and 2 is conceivable, that is, it may be a combination of one or more foamed and provided by one or more free-hanging evaporators, wherein the evaporator may be of the same type or of different types. It is conceivable to use the same types of free-hanging evaporator and the same types of foamed evaporator. It is also possible to use different types of free-hanging and / or different types of foamed evaporator.
The one or more foamed evaporator or at least one or all foamed evaporator may be of the same type as the one or more free-hanging evaporator or at least one or all foamed evaporator, but also different evaporator types are conceivable.
Otherwise, in FIG. 2 as well as in the following figures, the same reference numerals as in FIG. 1 used, provided they are the same or functionally identical parts.

Figur 3 zeigt eine nicht erfindungsgemäße Ausführung mit einem freihängenden Verdampfer 50, der einen ersten Abschnitt 51 aufweist der sich vertikal erstreckt und beispielsweise parallel zur Rückwand des Innenbehälters 10 verläuft und der einen horizontalen Abschnitt 52 aufweist, der sich horizontal und in dem hier dargestellten Ausführungsbeispiel parallel zur Decke des Innenbehälters 10 erstreckt.
Der Verdampfer 50 kann als reiner Rohrverdampfer oder als Blechverdampfer, wie z.B. Roll-Bond oder Z-Bond-Verdampfer ausgeführt sein.
Der Verdampfer 50 gemäß Figur 3 ist somit dadurch ausgezeichnet, dass er einen Bereich 51 aufweist, der sich im rückwärtigen Bereich des Kompartimentes befindet und einen oberen Bereich 52, der sich im Bereich der Decke des Kompartimentes befindet.
Die Bereiche 51 und 52 müssen nicht zwingend parallel zu den angrenzenden Innenbehälterwandungen angeordnet sein. Auch eine schräge Anordnung bzw. eine winklige Anordnung wie sie beispielsweise in Figur 5 dargestellt ist, ist denkbar. Wie dies weiter aus Figur 3 hervorgeht, befindet sich im Bereich des Verdampfers 50 ein Ventilator, der als Axial-, Radial-, Diagonal-, Tangential-, etc. Ventilator ausgeführt sein kann und das Bezugszeichen 60 trägt. Dieser Ventilator 60 ist so angeordnet, dass er im Betrieb eine Luftströmung über einen Teilbereich oder über den gesamten Verdampfer 50 bewirkt. Diese Luftströmung wird dann in den zu kühlenden Innenraum geleitet, der von dem Innenbehälter 10 und der nicht dargestellten Tür begrenzt wird.
Es findet somit in dem in Figur 3 dargestellten Ausführungsbeispiel eine dynamische Kühlung des Kühl- bzw. Gefrierraums statt.
Mit dem Bezugszeichen 70 ist eine Abdeckung gekennzeichnet, die sich sowohl im Bereich des horizontalen Abschnitts 52 als auch im Bereich des vertikalen Abschnitts 51 des Verdampfers 50 befindet. Wie dies aus Figur 3 hervorgeht, erstreckt sich die Abdeckung 70 in ihrem vertikalen Abschnitt 71 parallel zu dem vertikalen Abschnitt 51 des Verdampfers und mit ihrem oberen Abschnitt 72 schräg, nach vorne hin ansteigend und im Winkel zu dem horizontalen Verdampferabschnitt 52. Diese Ausführung der Abdeckung 70 bewirkt, dass der Nutzer beim Öffnen der Tür und beim Blick in den Innenraum den Verdampfer 50 nicht sieht, sondern nur auf die Abdeckung 70 blickt, die entsprechend optisch ansprechend ausgeführt sein kann. FIG. 3 shows a non-inventive embodiment with a freely suspended evaporator 50 having a first portion 51 which extends vertically and, for example, parallel to the rear wall of the inner container 10 and which has a horizontal portion 52 which is horizontal and parallel to the ceiling in the embodiment shown here of the inner container 10 extends.
The evaporator 50 may be designed as a pure tube evaporator or as a sheet evaporator, such as roll-bond or Z-bond evaporator.
The evaporator 50 according to FIG. 3 is thus characterized by having an area 51 located in the rear of the compartment and an upper area 52 located near the ceiling of the compartment.
The areas 51 and 52 need not necessarily be arranged parallel to the adjacent inner container walls. Also, an oblique arrangement or an angular arrangement such as in FIG. 5 is shown is conceivable. Like this further FIG. 3 It can be seen that in the region of the evaporator 50 there is a fan which can be designed as an axial, radial, diagonal, tangential, etc. fan and bears the reference numeral 60. This fan 60 is arranged so that during operation it causes an air flow over a partial area or over the entire evaporator 50. This air flow is then passed into the interior to be cooled, which is bounded by the inner container 10 and the door, not shown.
It thus finds in the in FIG. 3 illustrated embodiment, a dynamic cooling of the refrigerator or freezer instead.
The reference numeral 70 denotes a cover, which is located both in the region of the horizontal portion 52 and in the region of the vertical portion 51 of the evaporator 50 is located. Like this FIG. 3 is apparent, the cover 70 extends in its vertical portion 71 parallel to the vertical portion 51 of the evaporator and with its upper portion 72 obliquely rising toward the front and at an angle to the horizontal evaporator section 52. This embodiment of the cover 70 causes the Users when opening the door and looking into the interior of the evaporator 50 does not see, but only looks at the cover 70, which can be designed according visually appealing.

In dem dargestellten Ausführungsbeispiel gemäß Figur 3 ist auch der Ventilator 60 hinter der Abdeckung 70 angeordnet.In the illustrated embodiment according to FIG. 3 the fan 60 is also located behind the cover 70.

Die Abdeckung 70 hat die Aufgabe, zum einen eine kontrollierte Führung der Luftströmung, die durch den Ventilator 60 bereitgestellt wird, sicherzustellen und das vom Verdampfer abtropfende Kondensat für den Nutzer nicht sichtbar abzuleiten. Das Kondensat wird somit zunächst durch die Abdeckung 70 aufgefangen und dann an geeigneter Stelle für den Nutzer möglichst nicht sichtbar abgeleitet.The purpose of the cover 70 is to ensure a controlled guidance of the air flow provided by the fan 60 and to prevent the condensate dripping from the evaporator from being visible to the user. The condensate is thus initially collected by the cover 70 and then derived as possible not visible at a suitable location for the user.

Wie dies aus Figur 4 hervorgeht, kann der Verdampfer 50 eine Ausnehmung 55 aufweisen, die zur Montage des Ventilators 60 dient bzw. Raum für die Installation des Ventilators 60 schafft.Like this FIG. 4 As can be seen, the evaporator 50 may have a recess 55, which serves for mounting the fan 60 and creates space for the installation of the fan 60.

Hinsichtlich der Ausführung des Verdampfers ist auf die obigen Ausführungen zu verweisen. Der Verdampfer 50 kann beispielsweise als reiner Rohrverdampfer ausgeführt sein, wobei es denkbar ist, dass die Rohre des Rohrverdampfers zur Vergrößerung der Oberfläche mit einem Blech, bevorzugt aus Aluminium verbunden sind.With regard to the execution of the evaporator is to refer to the above statements. The evaporator 50 may for example be designed as a pure tube evaporator, it being conceivable that the tubes of the tube evaporator are connected to increase the surface with a metal sheet, preferably made of aluminum.

Auch ist es denkbar, den Verdampfer 50 als Blechverdampfer auszuführen, wie beispielsweise als Roll-Bond- oder Z-Bond-Verdampfer.It is also conceivable to carry out the evaporator 50 as a plate evaporator, such as, for example, as a roll-bond or Z-bond evaporator.

Weiterhin ist es denkbar, dass der Verdampfer über in den Figuren nicht näher dargestellte Löcher, Durchbrüche oder dergleichen verfügt, die ein Abtropfen des Kondensates von der Oberseite des Verdampfers 50 auf die Abdeckung 70 ermöglicht. Insbesondere kann dadurch erreicht werden, dass in dem in Figur 3, 4, 5 oben dargestellten und im wesentlichen horizontal oder schräg zur Horizontalen verlaufenden Verdampferabschnitt 52 entstehendes Kondensat von der Oberseite dieses Abschnitts ablaufen kann und auf die Abdeckung abtropft insbesondere auf deren horizontalen Abschnitt bzw. schräg verlaufenden Abschnitt 72. Dies hat den Vorteil, dass die Bildung größerer Kondensatmengen und die sich daraus ergebende Vereisung der oberen Verdampferfläche 52 im Bereich der Gerätedecke verhindert wird.Furthermore, it is conceivable that the evaporator has not shown in the figures holes, apertures or the like, which allows dripping of the condensate from the top of the evaporator 50 to the cover 70. In particular, it can be achieved that in the in FIG. 3 . 4 . 5 Condensate formed above and extending substantially horizontally or obliquely to the horizontal evaporator section 52 can drain from the top of this section and dripping onto the cover in particular on the horizontal portion or inclined portion 72. This has the advantage that the formation of larger amounts of condensate and the resulting icing of the upper evaporator surface 52 in the area of the device ceiling is prevented.

Die Ausführungsform gemäß Figur 5 unterscheidet sich von der Ausführungsform gemäß Figur 3 dadurch, dass der obere Abschnitt 52 des Verdampfers 50 nicht horizontal, sondern schräg nach vorne hin ansteigend ausgeführt ist, wie dies aus Figur 5 hervorgeht.The embodiment according to FIG. 5 differs from the embodiment according to FIG. 3 in that the upper portion 52 of the evaporator 50 is not made horizontally but inclined upward towards the front, as is apparent from FIG. 5 evident.

Die Abdeckung 70 und der Verdampfer 50 laufen gemäß Figur 4 und 5 insgesamt, das heißt in beiden Abschnitten 51, 71, 52, 72 parallel zueinander. Ein Unterschied zu der Ausführung gemäß Figur 3 besteht darin, dass sich gemäß Figur 5 der Ventilator 60 oberhalb des horizontal oder schräg verlaufenden Verdampferabschnitts 52 erstreckt, während dies in Figur 3 nicht der Fall ist. Gemäß Figur 3 befindet sich der Ventilator 60 zwischen Verdampfer 50 und Abdeckung 70 und insbesondere in einem Eckbereich des horizontalen und des vertikalen Verdampferabschnitts 51, 52.The cover 70 and the evaporator 50 run according to FIG. 4 and 5 in total, that is, in both sections 51, 71, 52, 72 parallel to each other. A difference from the execution according to FIG. 3 is that according to FIG. 5 the fan 60 extends above the horizontal or inclined evaporator section 52, while in FIG FIG. 3 not the case. According to FIG. 3 the fan 60 is located between evaporator 50 and cover 70 and in particular in a corner region of the horizontal and the vertical evaporator section 51, 52.

In Figur 5 befindet sich der Ventilator 60 im Eckbereich des Innenbehälters, das heißt in dem Bereich zwischen Behälterdecke und Innenbehälterrückwand.In FIG. 5 the fan 60 is in the corner region of the inner container, that is in the area between the container ceiling and the inner container rear wall.

Grundsätzlich kann sich der Ventilator zwischen Innenbehälter und Verdampfer befinden oder auch zwischen dem Verdampfer und der Abdeckung.In principle, the fan can be located between the inner container and the evaporator or between the evaporator and the cover.

Figur 6 zeigt eine weitere Ausführung. Gemäß dieser Ausgestaltung ist als Verdampfer ein eingeschäumter Rohrverdampfer 80 vorgesehen, der zur Vergrößerung der Oberfläche in Kanälen des Innenbehälters 10 verläuft. Die Kanäle des Innenbehälters 10 sind aus Sicht des Kühl- bzw. Gefrierkompartimentes konvex ausgeführt, das heißt erstrecken sich zu dem gekühlten Innenraum hin. In diesen Kanälen befindet sich teilweise aufgenommen der Rohrverdampfer 80.
Wie dies aus Figur 6 hervorgeht, befinden sich die Kanäle in dem hier dargestellten Ausführungsbeispiel sowohl an der Rückwand des Innenbehälters 10 als auch im Deckenbereich des Innenbehälters 10 (vgl. Bezugszeichen 80a und 80b).
Die Rohre des Rohrverdampfers 80 laufen an der Rückwand bevorzugt horizontal und im Bereich der Gerätedecke in Richtung der Gerätetiefe oder auch in Richtung der Gerätebreite.
Figur 6 zeigt ein Ausführungsbeispiel, bei dem die Rohre 80a und 80b des Rohrverdampfers 80 in Gerätebreite verlaufen und Figur 7 zeigt ein Ausführungsbeispiel, bei dem die Rohre 80c des Rohrverdampfers 80 in im Deckenbereich in Richtung der Gerätetiefe laufen und im Bereich der Rückwand bevorzugt horizontal (Bezugszeichen 80b).
Um die Verdampferfläche des Rohrverdampfers 80 weiter zu vergrößern, kann dieser mit einem Aluminiumblech versehen sein, das mit diesem verklebt ist. Hinter dem Verdampferrohr oder auch vor dem Verdampferrohr des Rohrverdampfers 80 kann somit ein Aluminiumblech aufgeklebt sein. Alternativ kommt auch ein Aluminiumklebeband in Betracht.
Um die Ankopplung des Rohres des Rohrverdampfers 80 an den Innenbehälter 10 zu verbessern, kann eine Wärmeleitpaste vorgesehen sein, die sich in den Kanälen befindet. FIG. 6 shows a further embodiment. According to this embodiment, a foamed tube evaporator 80 is provided as the evaporator, which extends to increase the surface in channels of the inner container 10. The channels of the inner container 10 are designed to be convex from the perspective of the cooling or freezing compartment, that is to say they extend towards the cooled interior. Partially housed in these channels is the tube evaporator 80.
Like this FIG. 6 It can be seen that the channels are in the embodiment shown here, both on the rear wall of the inner container 10 and in the ceiling region of the inner container 10 (see reference numerals 80a and 80b).
The tubes of the tube evaporator 80 preferably run horizontally on the rear wall and in the area of the device ceiling in the direction of the device depth or also in the direction of the device width.
FIG. 6 shows an embodiment in which the tubes 80a and 80b of the tube evaporator 80 extend in device width and FIG. 7 shows an embodiment in which the tubes 80c of the tube evaporator 80 run in the ceiling area in the direction of the device depth and in the region of the rear wall preferably horizontal (reference numeral 80b).
In order to further increase the evaporator area of the tube evaporator 80, this may be provided with an aluminum sheet which is glued thereto. Behind the evaporator tube or in front of the evaporator tube of the tube evaporator 80, an aluminum sheet can thus be glued. Alternatively, an aluminum adhesive tape into consideration.
In order to improve the coupling of the tube of the tube evaporator 80 to the inner container 10, a thermal paste may be provided which is located in the channels.

Die Verdampferrohre des Rohrverdampfers 80 können aus Stahl hergestellt sein und können bereits bei der Herstellung des Behälters 10 im Ziehverfahren eingelegt werden, wodurch sich der Herstellvorgang vereinfacht.
Vorzugsweise sind die Kanäle des Innenbehälters mit einem oder mehreren Hinterschnitten ausgeführt, was zur Folge hat, dass der Rohrverdampfer gut und zuverlässig in dem oder den Kanälen gesichert ist.The evaporator tubes of the tube evaporator 80 may be made of steel and may already be inserted in the manufacture of the container 10 in the drawing process, whereby the manufacturing process simplified.
Preferably, the channels of the inner container are designed with one or more undercuts, with the result that the tube evaporator is well and reliably secured in the channel or channels.

In weiterer Ausgestaltung ist vorgesehen, dass die Kanäle mäanderförmig verlaufen und in den 180° Bögen nach außen hin offen sind, um Toleranzen der gebogenen Rohrverdampferrohre des Rohrverdampfers 80 auszugleichen. Die dabei auftretende Toleranz steigt mit der Entfernung zum Rohrbeginn des Rohrverdampfers 80.
Wie bereits ausgeführt, kann die Kanalrichtung horizontal oder vertikal an der Rückwand und in Richtung der Gerätetiefe oder -breite an der Gerätedecke verlaufen.
Der Verdampfer, der sich über die Rückwand und über den Deckenbereich erstrecken kann, wie er beispielsweise in Figur 3 - 7 ersichtlich ist, kann einstückig gefertigt sein oder auch aus mehreren Teilen bestehen, die beispielsweise durch eine Lokringverbindung miteinander in Verbindung stehen.
Grundsätzlich ist es des weiteren denkbar, dass der freihängende Verdampfer als Draht-auf-Rohr-Verdampfer ausgeführt ist.
Durch die vorliegende Erfindung wird die Effizienz eines Kühl- und/oder Gefriergerätes gesteigert. Die Verdampfertechnologien ermöglichen bei einfacher und damit kostengünstiger Ausführung eine höhere Effizienz und einen niedrigeren Energieverbrauch und damit das Erreichen besserer Energieeffizienzklassen.In a further embodiment, it is provided that the channels meander and are open in the 180 ° arches to the outside to compensate for tolerances of the curved tube evaporator tubes of the tube evaporator 80. The occurring tolerance increases with the distance to the tube beginning of the tube evaporator 80th
As already stated, the channel direction can run horizontally or vertically on the rear wall and in the direction of the device depth or width on the device ceiling.
The evaporator, which can extend over the back wall and over the ceiling area, as he for example in Figure 3-7 can be seen, may be made in one piece or even consist of several parts, which communicate with each other for example by a Lokringverbindung.
In principle, it is also conceivable that the free-hanging evaporator is designed as a wire-on-tube evaporator.
By the present invention, the efficiency of a refrigerator and / or freezer is increased. Evaporator technologies, with a simple and therefore cost-effective design, allow for higher efficiency and lower energy consumption, and thus for better energy efficiency classes.

Aufgrund der Verwendung der genannten Abdeckung verbessert sich der optische Gesamteindruck des Kühl- bzw. Gefrierbereichs, da die Verdampfer so gestaltet und in das Gerät integriert sind, dass kein Kondensat an sichtbaren Stellen entstehen kann.Due to the use of said cover, the overall visual impression of the refrigerator or freezer area improves because the evaporators are designed and integrated into the appliance so that no condensate can form on visible areas.

Claims (7)

  1. Refrigeration and/or freezer device, comprising:
    a compartment to be cooled, which serves to accommodate refrigerated and/or frozen goods, and
    a refrigerant circuit, which includes two evaporators (40, 50), which are flown-through by refrigerant in operation of the refrigerant circuit, wherein
    the two evaporators (40, 50) cool the same compartment to be cooled of the refrigeration and/or freezer device in operation of the refrigerant circuit,
    characterized in that
    the two evaporators are arranged offset to one another in the depth direction of the refrigeration and/or freezer device.
  2. The refrigeration and/or freezer device according to claim 1, wherein the two evaporators (40, 50) are of different evaporator types.
  3. The refrigeration and/or freezer device according to one of the preceding claims, wherein the two evaporators (40, 50) are flown-though by refrigerant one after the other or parallelly in the refrigerant circuit.
  4. The refrigeration and/or freezer device according to one of the preceding claims, wherein the two evaporators (40, 50) are part of the same or of different refrigerant circuits.
  5. The refrigeration and/or freezer device according to one of the preceding claims, wherein the mounting arrangement of the evaporators (40, 50) is freely-suspended and/or foamed.
  6. The refrigeration and/or freezer device according to one of the preceding claims, wherein the evaporator types are selected from the group pipe-to-metal, Z-bond, roll-bond, or wire-to-pipe.
  7. The refrigeration and/or freezer device according to one of the preceding claims, wherein the refrigeration and/or freezer device comprises one or multiple valves, in particular magnetic valves, which are arranged in such a way that the inlet and/or the outlet of refrigerant to and/or from the evaporator(s) can be blocked and/or altered, preferably controlled in open-loop or closed-loop, by means of the valve(s).
EP11009401.8A 2010-12-03 2011-11-28 Refrigeration and/or freezer device Not-in-force EP2461125B1 (en)

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Publication number Priority date Publication date Assignee Title
JPS5096963A (en) * 1973-12-27 1975-08-01
DE2917721A1 (en) * 1978-05-02 1979-11-08 Tokyo Shibaura Electric Co Domestic refrigerator with freezer compartment - has two refrigerating systems and electrical heater for deicing without removing food
DE3805987A1 (en) * 1987-02-27 1988-09-08 Toshiba Kawasaki Kk REFRIGERATION CIRCUIT WITH REFRIGERATION STORAGE

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EP2461125A3 (en) 2015-10-28
ES2701016T3 (en) 2019-02-20
EP2461125A2 (en) 2012-06-06

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