EP1242775A1 - Refrigeration device such as a no-frost refrigerator or freezer - Google Patents

Refrigeration device such as a no-frost refrigerator or freezer

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Publication number
EP1242775A1
EP1242775A1 EP00984946A EP00984946A EP1242775A1 EP 1242775 A1 EP1242775 A1 EP 1242775A1 EP 00984946 A EP00984946 A EP 00984946A EP 00984946 A EP00984946 A EP 00984946A EP 1242775 A1 EP1242775 A1 EP 1242775A1
Authority
EP
European Patent Office
Prior art keywords
fan
evaporator
air duct
air
vicinity
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.)
Granted
Application number
EP00984946A
Other languages
German (de)
French (fr)
Other versions
EP1242775B1 (en
Inventor
Michaela Malisi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1242775A1 publication Critical patent/EP1242775A1/en
Application granted granted Critical
Publication of EP1242775B1 publication Critical patent/EP1242775B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • F25D2317/06—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 with forced air circulation
    • F25D2317/062—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 with forced air circulation along the inside of doors
    • 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
    • F25D2317/06—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 with forced air circulation
    • F25D2317/065—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 with forced air circulation characterised by the air return
    • F25D2317/0655—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 with forced air circulation characterised by the air return through the top

Definitions

  • Refrigeration device such as no-frost fridge or freezer
  • the invention relates to a cooling device, such as a no-frost refrigerator or freezer or the like, with a heat-insulating housing, within which is arranged at least one usable space which can be closed by a door and which is cooled by cooling air which is forcibly circulated by means of a fan via an evaporator, which is conveyed by the fan into an air duct located at least near the rear wall of the useful space, within which the evaporator is arranged at least approximately upright.
  • a cooling device such as a no-frost refrigerator or freezer or the like
  • a heat-insulating housing within which is arranged at least one usable space which can be closed by a door and which is cooled by cooling air which is forcibly circulated by means of a fan via an evaporator, which is conveyed by the fan into an air duct located at least near the rear wall of the useful space, within which the evaporator is arranged at least approximately upright.
  • a no-frost cooling device in the cooling space of which an upright finned evaporator is provided on the rear wall. This is located behind an air duct that extends into the vicinity of the ceiling of the cooling space and is forced-ventilated by means of a fan that is likewise arranged within the air duct and is located in the vicinity of the cooling chamber ceiling and thus upstream of the evaporator in the direction of the forced cooling air.
  • the invention has for its object to avoid the disadvantages of the prior art in a cold device according to the preamble of claim 1 with simple design measures
  • the evaporator sits in the vicinity of the ceiling of the usable space and is arranged in the suction-side air flow of the fan, which is provided below the evaporator
  • the arrangement of the evaporator on the one hand and the assignment of the fan to it on the other hand ensures that the cooling chamber can penetrate, for example
  • the cooling device When the cooling device is opened or moisture that has been stored by storing moisture in it is deposited reliably on the evaporator which is subjected to a defrosting process from time to time, so that the functional humidity of the fan is always ensured.
  • the arrangement according to the invention in connection with the fan assignment enables one compared to the prior art Significantly shortened structure for the air duct, which minimizes the loss of usable cooling space volume caused by this.
  • the assignment of the fan to the evaporator downstream of the evaporator ensures that the latter is simultaneously and therefore at least almost due to the inherently broad intake air flow is completely swept by the circulated cow air, whereby the
  • Cooling of the cooling air can be achieved in a particularly energetically favorable way
  • a fan is particularly expedient if, according to a next advantageous embodiment of the object of the invention, it is provided that the fan is designed as an axial fan
  • the heat exchange of the forcedly circulated cooling air on the finned evaporator is particularly intensive if, according to a next advantageous embodiment of the
  • the object of the invention is provided that the fan sits within the air duct, which has its outlet opening in the vicinity near the fan.
  • such an arrangement results in a particularly compact construction which is minimized in terms of its overall height.
  • the air duct is guided at least in the vicinity of the ceiling of the utility room into the vicinity of the door.
  • the “warm air” Due to the section of the air duct on the ceiling, or at least in the vicinity of the ceiling of the cooling room, which is upstream of the evaporator in the direction of the forced cooling air, the “warm air” is sucked out of the warmest area of the cooling room, thereby reducing the temperature stratification inside the cooling room the air duct, which is brought into the vicinity of the door, prevents the air inlet opening from being covered by refrigerated goods.
  • the air duct is particularly easy to manufacture and assemble if, according to a last preferred embodiment of the object of the invention, it is provided that the air duct comprises an air guide plate which is angled in the form of an angle profile and which is spaced apart from the ceiling and with which to form the air duct with one of its angle legs another angle leg is arranged spaced from the rear wall of the useful space.
  • the single figure shows a no-frost cooling device with a lamella evaporator arranged in its cooling space, covered by an air duct and forced-ventilated by a fan located inside the air duct, in a sectional representation from the side.
  • a no-frost cooling device 10 with a heat-insulating housing 11 is shown, for example, as a refrigerator or freezer.
  • a usable space 13 which is accessible via a door 12 in the closed state and is designed as a cooling space accessible, which is lined by an inner panel 14 belonging to the structure of the housing 11.
  • the inner lining 14 is formed in one piece without cutting from a plastic board and has two opposite side walls 15 (only one of which is shown), a floor 16, a ceiling 17 arranged opposite to it and a rear wall 18 opposite the door 12.
  • the evaporator 19 which is in the form of a cuboid, is fixed in the upright position with one of its large-area jacket sides on the rear wall 18. Immediately below the evaporator 19, in its close range there is a fan 20, which in the present case is designed as an axial fan
  • Rear wall 18 arranged so that the evaporator 19 is in the suction air flow of the fan 20.
  • Both the fan 20 and the evaporator 19 are arranged within an air duct 21 which extends essentially across the width of the cooling space 13 and is essentially angular in cross section.
  • This has a first air duct 22 running along the ceiling 17 with an air inlet opening 23 provided in the vicinity of the door 12 and a second air duct 24 running along the upper section of the rear wall 18.
  • the lamella evaporator 19 is provided within the air duct 24 and, below it, the fan 20 is provided, the fan wheel of which is arranged in the plane of an air outlet opening 25 located at the free end of the air duct 24. This opens approximately in the upper third of the rear wall 18.
  • the air duct 21 is produced by an air guide plate 26 angled in the manner of an angle profile with two angle legs 27 and 28, of which the angle leg 27 runs at a parallel distance from the ceiling 17, during the Angle leg 28 objected parallel to rear wall 18, in the upper third of which is provided.
  • the cooling air (represented by arrows) is specifically sucked out of the region near the door 17 which is warmer due to the principle, and conveyed to the cooling via the lamella evaporator 19 before it is cooled by the Fan 20 in the establishment of the air outlet opening

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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Defrosting Systems (AREA)

Abstract

The invention relates to a refrigeration device (10) with a refrigeration chamber (13) at the back wall (18) of which an upright finned evaporator (19) is provided behind an air duct system (21). Said finned evaporator is ventilated with forced air by a fan (20) disposed within the air duct system (21). The aim of the invention is provide a refrigeration device which prevents icing of the rotor of the fan (20) and reduces the length of air ducts necessary, thereby considerably creating more storage room in the refrigeration or freezing chamber (13). To this end, the evaporator (19) is disposed near the ceiling (17) of the useful storage area (13) and in the suction-end air current of the fan (20) which is provided below the evaporator (19).

Description

Kälteqerät wie No-Frost-Kühl- oder Gefrierschrank Refrigeration device such as no-frost fridge or freezer
Die Erfindung betrifft ein Kühlgerät, wie einen No-Frost-Kühl- oder Gefrierschrank oder dergleichen, mit einem wärmeisolierenden Gehäuse, innerhalb welchem wenigstens ein von einer Tür verschließbarer Nutzraum angeordnet ist, welcher von zwangsweise anhand eines Ventilators über einem Verdampfer umgewälzte Kühlluft gekühlt ist, welche vom Ventilator in eine wenigstens nahe der Rückwand des Nutzraumes sitzende Luftfüh- rung gefördert ist, innerhalb welcher der Verdampfer zumindest annähernd aufrecht angeordnet ist.The invention relates to a cooling device, such as a no-frost refrigerator or freezer or the like, with a heat-insulating housing, within which is arranged at least one usable space which can be closed by a door and which is cooled by cooling air which is forcibly circulated by means of a fan via an evaporator, which is conveyed by the fan into an air duct located at least near the rear wall of the useful space, within which the evaporator is arranged at least approximately upright.
Aus der FR-OS 2 379 780 ist ein No-Frost-Kühlgerät bekannt, in dessen Kühlraum an der Rückwand ein aufrecht angeordneter Lamellenverdampfer vorgesehen ist. Dieser sitzt hinter einer bis in den Nahbereich der Decke des Kühlraumes reichenden Luftführung und wird anhand eines ebenso innerhalb der Luftführung angeordneten, im Nahbereich der Kühlraumdecke sitzenden und somit dem Verdampfer in Richtung der zwangsweise umgewälzten Kühlluft vorgeschalteten Ventilator zwangsbelüftet. Durch die Vorschaltung des Ventilators besteht für diesen, wenn der Verdampfer in seinem Nahbereich angeord- net ist, die Gefahr, daß die in den Kühlraum eingetragene Feuchtigkeit an seinem Lüfterrad ausfriert und dieses damit vereist ist, wodurch die Funktion des Ventilators zumindest stark beeinträchtigt wenn nicht gar unterbunden ist. Um diese Problematik zumindest ansatzweise zu umgehen, ist es erforderlich, den Verdampfer in einem verhältnismäßig großen Abstand zum Ventilator anzuordnen. Dies hat jedoch wiederum zur Folge, daß die Luftführung in ihrer Länge entsprechend anzupassen ist, wodurch die Stauraumtiefe desFrom FR-OS 2 379 780 a no-frost cooling device is known, in the cooling space of which an upright finned evaporator is provided on the rear wall. This is located behind an air duct that extends into the vicinity of the ceiling of the cooling space and is forced-ventilated by means of a fan that is likewise arranged within the air duct and is located in the vicinity of the cooling chamber ceiling and thus upstream of the evaporator in the direction of the forced cooling air. By connecting the fan upstream, there is a danger for the evaporator, if it is arranged in its immediate vicinity, that the moisture introduced into the cooling space freezes out on its fan wheel and this is iced up, which at least severely impairs the function of the fan if not not is even prevented. To at least partially avoid this problem, it is necessary to arrange the evaporator at a relatively large distance from the fan. However, this in turn has the consequence that the length of the air duct must be adjusted accordingly, as a result of which the storage space depth of the
Kühlraumes über einen größeren Höhenabschnitt, bedingt durch die Anordnung und den Aufbau der Luftführung geschmälert und somit das Nutzvolumen des Kühlraumes vermindert ist. Der Erfindung liegt die Aufgabe zugrunde, bei einem Kaltegerat gemäß dem Oberbegriff des Anspruches 1 mit einfachen konstruktiven Maßnahmen die Nachteile des Standes der Technik zu vermeidenCold room over a larger height section, due to the arrangement and structure of the air duct reduced and thus the usable volume of the cold room is reduced. The invention has for its object to avoid the disadvantages of the prior art in a cold device according to the preamble of claim 1 with simple design measures
Diese Aufgabe wird gemäß der Erfindung dadurch gelost, daß der Verdampfer im Nahbereich der Decke des Nutzraumes sitzt und im saugseitigen Luftstrom des Ventilators angeordnet ist, welcher unterhalb dem Verdampfer vorgesehen istThis object is achieved according to the invention in that the evaporator sits in the vicinity of the ceiling of the usable space and is arranged in the suction-side air flow of the fan, which is provided below the evaporator
Durch die Anordnung des Verdampfers einerseits und die Zuordnung des Ventilators zu diesem andererseits ist sichergestellt, daß sich die in den Kuhlraum beispielsweise durchThe arrangement of the evaporator on the one hand and the assignment of the fan to it on the other hand ensures that the cooling chamber can penetrate, for example
Offnen der Kuhlgeratetur oder durch Einlagerung von feuchtehaltigem Lagergut eingetragene Feuchtigkeit sicher an dem von Zeit zu Zeit einem Abtauprozeß unterzogenen Verdampfer niederschlagt, so daß die Funktionstuchtigkeit des Ventilators stets sichergestellt ist Darüber hinaus ermöglicht die erfindungsgemaße Anordnung in Verbindung mit der Ventilatorzuordnung einen gegenüber dem Stand der Technik deutlich verkürzten Aufbau für die Luftfuhrung, wodurch die durch diese hervorgerufene Einbuße an Kuhl- raumnutzvolumen minimiert ist Außerdem ist durch die saugseitige, dem Verdampfer nachgeschaltete Zuordnung des Ventilators zum Verdampfer sichergestellt, daß letzterer durch den prinzipbedingt breitgefacherten ansaugseitigen Luftstrom gleichzeitig und da- mit mindest nahezu vollständig von der umgewalzten Kuhlluft umstrichen ist, wodurch dieWhen the cooling device is opened or moisture that has been stored by storing moisture in it is deposited reliably on the evaporator which is subjected to a defrosting process from time to time, so that the functional humidity of the fan is always ensured. In addition, the arrangement according to the invention in connection with the fan assignment enables one compared to the prior art Significantly shortened structure for the air duct, which minimizes the loss of usable cooling space volume caused by this. In addition, the assignment of the fan to the evaporator downstream of the evaporator ensures that the latter is simultaneously and therefore at least almost due to the inherently broad intake air flow is completely swept by the circulated cow air, whereby the
Abkühlung der Kuhlluft auf besonders energetisch gunstige Weise erreichbar istCooling of the cooling air can be achieved in a particularly energetically favorable way
Nach einer bevorzugten Ausfuhrungsform des Gegenstandes der Erfindung ist vorgesehen, daß der Ventilator im Nahbereich unterhalb dem Verdampfer angeordnet istAccording to a preferred embodiment of the object of the invention it is provided that the fan is arranged in the vicinity below the evaporator
Durch die unmittelbare nahe Zuordnung des Ventilators zum Verdampfer ist zwischen diesen beiden Einheiten nur eine kurze Luftfuhrung erforderlich, wodurch sich deren Bauhohe insgesamt zugunsten des Nutzraumvolumens im Kuhlraum verkürztDue to the direct proximity of the fan to the evaporator, only a short air flow is required between these two units, as a result of which their overall height is reduced in favor of the usable space volume in the cooling space
Besonders zweckmäßig ist ein Ventilator ausgebildet, wenn nach einer nächsten vorteilhaften Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß der Ventilator als Axiallufter ausgebildet istA fan is particularly expedient if, according to a next advantageous embodiment of the object of the invention, it is provided that the fan is designed as an axial fan
Besonders intensiv ist der Wärmeaustausch der zwangsweise umgewalzten Kuhlluft am Lamellenverdampfer, wenn nach einer nächsten vorteilhaften Ausfuhrungsform des Ge- genstandes der Erfindung vorgesehen ist, daß der Ventilator innerhalb der Luftführung sitzt, welche im Nahbereich unterhalb des Ventilators ihre Austrittsöffnung aufweist. Zudem ergibt sich durch eine derartige Anordnung ein besonders kompakter, in seiner Bauhöhe minimierter Aufbau.The heat exchange of the forcedly circulated cooling air on the finned evaporator is particularly intensive if, according to a next advantageous embodiment of the The object of the invention is provided that the fan sits within the air duct, which has its outlet opening in the vicinity near the fan. In addition, such an arrangement results in a particularly compact construction which is minimized in terms of its overall height.
Gemäß einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß die Luftführung zumindest im Nahbereich der Decke des Nutzraumes bis in den Nahbereich der Tür geführt ist.According to a next preferred embodiment of the subject matter of the invention, it is provided that the air duct is guided at least in the vicinity of the ceiling of the utility room into the vicinity of the door.
Durch den dem Verdampfer in Richtung der zwangsweise umgewälzten Kühlluft vorgeschalteten Abschnitt der Luftführung an der Decke oder zumindest im Nahbereich der Decke des Kühlraumes wird gezielt die „Warmluft" aus dem wärmsten Bereich des Kühlraumes abgesaugt, wodurch die Temperaturschichtung innerhalb des Kühlraumes vermindert ist. Außerdem ist durch die bis in den Nahbereich der Tür herangeführte Luftfüh- rung verhindert, daß deren Lufteintrittsöffnung durch eingestelltes Kühlgut abgedeckt wird.Due to the section of the air duct on the ceiling, or at least in the vicinity of the ceiling of the cooling room, which is upstream of the evaporator in the direction of the forced cooling air, the “warm air” is sucked out of the warmest area of the cooling room, thereby reducing the temperature stratification inside the cooling room the air duct, which is brought into the vicinity of the door, prevents the air inlet opening from being covered by refrigerated goods.
Besonders einfach herstell- und montierbar ist die Luftführung, wenn nach einer letzten bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß die Luftführung eine in Form eines Winkelprofils abgewinkelte Luftleitplatine umfaßt, welche zur Ausbildung der Luftführung mit einem ihrer Winkelschenkel beabstandet zur Decke und mit dem anderen Winkelschenkel beabstandet zur Rückwand des Nutzraumes angeordnet ist.The air duct is particularly easy to manufacture and assemble if, according to a last preferred embodiment of the object of the invention, it is provided that the air duct comprises an air guide plate which is angled in the form of an angle profile and which is spaced apart from the ceiling and with which to form the air duct with one of its angle legs another angle leg is arranged spaced from the rear wall of the useful space.
Die Erfindung ist in der nachfolgenden Beschreibung anhand eines in der Zeichnung vereinfacht dargestellten Ausführungsbeispieles erläutert.The invention is explained in the following description with reference to an embodiment shown in simplified form in the drawing.
Die einzige Figur zeigt ein No-Frost-Kühlgerät mit in seinem Kühlraum angeordneten, von einer Luftführung abgedeckten und von einem innerhalb der Luftführung sitzenden Venti- lator zwangsbelüfteten Lamellenverdampfer, in Schnittdarstellung von der Seite.The single figure shows a no-frost cooling device with a lamella evaporator arranged in its cooling space, covered by an air duct and forced-ventilated by a fan located inside the air duct, in a sectional representation from the side.
Gemäß der einzigen Figur ist in vereinfachter schematischer Darstellung ein beispielsweise als Kühl- oder Gefriergerät Einsatz findendes No-Frost-Kältegerät 10 mit einem wärmeisolierenden Gehäuse 11 gezeigt. Innerhalb des Gehäuses 11 ist ein über eine im Schließzustand befindliche Tür 12 zugänglicher, als Kühlraum ausgebildeter Nutzraum 13 zugänglich, welcher durch eine zum Aufbau des Gehäuses 11 gehörende Innenverkleidung 14 ausgekleidet ist. Die Innenverkleidung 14 ist einstückig spanlos aus einer Kunst- stoffplatine geformt und besitzt zwei einander gegenüberliegenden Seitenwände 15 (nur eine davon ist gezeigt), einen Boden 16, eine dazu gegenüberliegend angeordnete Decke 17 und eine der Tür 12 gegenüberliegende Rückwand 18. An der Rückwand 18 ist unmittelbar unterhalb der Decke 17 ein Verdampfer 19 befestigt, welcher als sogenannter Lamellenverdampfer ausgebildet ist. Der insgesamt in Form eines Quaders ausgebildete Verdampfer 19 ist dabei in aufrechter Position mit einer seiner großflächigen Mantelseiten an der Rückwand 18 festgesetzt. Unmittelbar unterhalb des Verdampfers 19, ist in des- sen Nahbereich ein im vorliegenden Fall als Axiallüfter ausgebildeter Ventilator 20 an derAccording to the single figure, a no-frost cooling device 10 with a heat-insulating housing 11 is shown, for example, as a refrigerator or freezer. Within the housing 11 there is a usable space 13 which is accessible via a door 12 in the closed state and is designed as a cooling space accessible, which is lined by an inner panel 14 belonging to the structure of the housing 11. The inner lining 14 is formed in one piece without cutting from a plastic board and has two opposite side walls 15 (only one of which is shown), a floor 16, a ceiling 17 arranged opposite to it and a rear wall 18 opposite the door 12. On the rear wall 18 an evaporator 19 is attached directly below the ceiling 17, which is designed as a so-called lamella evaporator. The evaporator 19, which is in the form of a cuboid, is fixed in the upright position with one of its large-area jacket sides on the rear wall 18. Immediately below the evaporator 19, in its close range there is a fan 20, which in the present case is designed as an axial fan
Rückwand 18 angeordnet, so daß der Verdampfer 19 im saugseitigen Luftstrom des Ventilators 20 liegt. Sowohl der Ventilator 20 als auch der Verdampfer 19 ist innerhalb einer im wesentlichen über die Breite des Kühlraumes 13 reichenden, im Querschnitt im wesentlichen winkelförmig ausgebildeten Luftführung 21 angeordnet. Diese weist einen er- sten, entlang der Decke 17 verlaufenden Luftführungskanal 22 mit einer im Nahbereich der Tür 12 vorgesehenen Lufteintrittsöffnung 23 und einen zweiten, entlang des oberen Abschnitts der Rückwand 18 verlaufenden Luftführungskanal 24 auf. Innerhalb des Luftführungskanals 24 ist der Lamellenverdampfer 19 und im Anschluß daran unterhalb diesem der Ventilator 20 vorgesehen ist, dessen Lüfterrad in der Ebene einer am freien En- de des Luftführungskanales 24 sitzenden Luftaustrittsöffnung 25 angeordnet ist. Diese mündet in etwa im oberen Drittel der Rückwand 18. Die Luftführung 21 ist im vorliegenden Fall durch eine in Art eines Winkelprofils abgewinkelte Luftleitplatine 26 mit zwei Winkelschenkeln 27 und 28 erzeugt, von denen der Winkelschenkel 27 in parallelem Abstand zur Decke 17 verläuft, während der Winkelschenkel 28 parallel beanstandet zur Rück- wand 18, in dessen oberen Drittel vorgesehen ist.Rear wall 18 arranged so that the evaporator 19 is in the suction air flow of the fan 20. Both the fan 20 and the evaporator 19 are arranged within an air duct 21 which extends essentially across the width of the cooling space 13 and is essentially angular in cross section. This has a first air duct 22 running along the ceiling 17 with an air inlet opening 23 provided in the vicinity of the door 12 and a second air duct 24 running along the upper section of the rear wall 18. The lamella evaporator 19 is provided within the air duct 24 and, below it, the fan 20 is provided, the fan wheel of which is arranged in the plane of an air outlet opening 25 located at the free end of the air duct 24. This opens approximately in the upper third of the rear wall 18. In the present case, the air duct 21 is produced by an air guide plate 26 angled in the manner of an angle profile with two angle legs 27 and 28, of which the angle leg 27 runs at a parallel distance from the ceiling 17, during the Angle leg 28 objected parallel to rear wall 18, in the upper third of which is provided.
Durch die Ausbildung und Anordnung der Luftführung 21 wird gezielt die Kühlluft (durch Pfeile dargestellt) gezielt aus dem prinzipbedingt wärmeren türnahen Bereich an der Dek- ke 17 abgesaugt und zu ihrer Abkühlung über den Lamellenverdampfer 19 gefördert, be- vor sie nach ihrer Abkühlung durch den Ventilator 20 in Errichtung der LuftaustrittsöffnungDue to the design and arrangement of the air duct 21, the cooling air (represented by arrows) is specifically sucked out of the region near the door 17 which is warmer due to the principle, and conveyed to the cooling via the lamella evaporator 19 before it is cooled by the Fan 20 in the establishment of the air outlet opening
25 beschleunigt und über diese in den Kühlraum 13 zurück ausgeblasen wird. 25 accelerated and blown back into the cooling chamber 13.

Claims

Patentansprüche claims
1. Kältegerät, wie No-Frost-Kühl- oder Gefrierschrank oder dergleichen, mit einem wärmeisolierenden Gehäuse, innerhalb welchem wenigstens ein von einer Tür verschließbarer Nutzraum angeordnet ist, welcher von zwangsweise anhand eines Ventilators über einen Verdampfer umgewälzte Kühlluft gekühlt ist, welche vom Ventilator in eine wenigstens nahe der Rückwand des Nutzraumes sitzende Luftführung gefördert ist, innerhalb welcher der Verdampfer zumindest annähernd aufrecht angeordnet ist, dadurch gekennzeichnet, daß der Verdampfer (19) im Nahbereich der Decke (17) des Nutzraumes (13) sitzt und im saugseitigen Luftstrom des Ventilators (20) angeordnet ist, welcher unterhalb dem Verdampfer (19) vorgesehen ist.1. Refrigeration device, such as no-frost refrigerator or freezer or the like, with a heat-insulating housing, within which is arranged at least one usable space closable by a door, which is cooled by forced cooling air circulated by a fan via an evaporator, which is from the fan is conveyed into an air duct at least near the rear wall of the usable space, within which the evaporator is arranged at least approximately upright, characterized in that the evaporator (19) is located in the vicinity of the ceiling (17) of the usable space (13) and in the suction-side air flow of the Fan (20) is arranged, which is provided below the evaporator (19).
2. Kältegerät nach Anspruch 1 , dadurch gekennzeichnet, daß der Ventilator (20) im Nahbereich unterhalb dem Verdampfer (19) angeordnet ist.2. Refrigeration device according to claim 1, characterized in that the fan (20) is arranged in the vicinity below the evaporator (19).
3. Kältegerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Ventilator (20) als Axiallüfter ausgebildet ist.3. Refrigerating appliance according to claim 1 or 2, characterized in that the fan (20) is designed as an axial fan.
4. Kältegerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Ventilator (20) innerhalb der Luftführung (21) sitzt, welche im Nahbereich unterhalb des Ventilators (20) ihre Austrittsöffnung (25) aufweist.4. Refrigerating appliance according to one of claims 1 to 3, characterized in that the fan (20) sits within the air duct (21) which has its outlet opening (25) in the vicinity below the fan (20).
5. Kältegerät nach Anspruch 1 oder 4, dadurch gekennzeichnet, daß die Luftführung (21) zumindest im Nahbereich der Decke (17) der Nutzraumes (13) bis wenigstens in dem Nahbereich der Tür (12) geführt ist. Kältegerät nach Anspruch 1 , 4 oder 5, dadurch gekennzeichnet, daß die Luftführung (21) eine in Form eines Winkelprofils abgewinkelte Luftleitplatine (26) umfaßt, welche zur Ausbildung der Luftführung (21 ) mit einem ihrer Winkelschenkel (27) beabstandet zur Decke (17) und mit dem anderen Winkelschenkel (28) beabstandet zur Rückwand (18) des Nutzraumes (13) angeordnet ist. 5. Refrigerating appliance according to claim 1 or 4, characterized in that the air duct (21) is guided at least in the vicinity of the ceiling (17) of the useful space (13) to at least in the vicinity of the door (12). Refrigerating appliance according to claim 1, 4 or 5, characterized in that the air duct (21) comprises an air guide plate (26) which is angled in the form of an angular profile and which, in order to form the air duct (21), is spaced apart from the ceiling (17) by one of its angular legs (27) ) and with the other angle leg (28) spaced from the rear wall (18) of the useful space (13).
EP00984946A 1999-12-22 2000-10-31 Refrigeration device such as a no-frost refrigerator or freezer Expired - Lifetime EP1242775B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19962258 1999-12-22
DE19962258A DE19962258A1 (en) 1999-12-22 1999-12-22 Refrigeration device with no-frost refrigerator or freezer body has evaporator close to useful space ceiling and in suction side air flow to fan mounted below evaporator
PCT/EP2000/010763 WO2001046630A1 (en) 1999-12-22 2000-10-31 Refrigeration device such as a no-frost refrigerator or freezer

Publications (2)

Publication Number Publication Date
EP1242775A1 true EP1242775A1 (en) 2002-09-25
EP1242775B1 EP1242775B1 (en) 2006-01-18

Family

ID=7933971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00984946A Expired - Lifetime EP1242775B1 (en) 1999-12-22 2000-10-31 Refrigeration device such as a no-frost refrigerator or freezer

Country Status (5)

Country Link
EP (1) EP1242775B1 (en)
AT (1) ATE316232T1 (en)
DE (2) DE19962258A1 (en)
TR (1) TR200201622T2 (en)
WO (1) WO2001046630A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102005029907C5 (en) * 2005-06-26 2016-05-19 Kramer Gmbh Recirculating air cooling machine for eutectic plates
IT1402899B1 (en) 2010-11-24 2013-09-27 Angelantoni Ind Spa ULT FREEZER WITH REDUCED ICE FORMATION
EP2613111A3 (en) 2012-01-03 2015-07-01 Indesit Company Beyaz Esya Sanayi ve Ticaret Anonim Sirketi A refrigerator

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US3261173A (en) * 1964-07-29 1966-07-19 Gen Motors Corp Refrigerating apparatus
CH635190A5 (en) * 1977-02-03 1983-03-15 Forster Hermann Ag METHOD FOR REFRIGERATED STORAGE AND KEEPING FRESH PRODUCTS, AND COOLING FURNITURE FOR CARRYING OUT THE METHOD.
US4642998A (en) * 1985-09-06 1987-02-17 Samsung Electronic Co., Ltd. Refrigerator cooling air flow control apparatus
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JPH0618194Y2 (en) * 1989-04-13 1994-05-11 シャープ株式会社 refrigerator
US5157941A (en) * 1991-03-14 1992-10-27 Whirlpool Corporation Evaporator for home refrigerator
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Non-Patent Citations (1)

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Title
See references of WO0146630A1 *

Also Published As

Publication number Publication date
DE19962258A1 (en) 2001-06-28
WO2001046630A1 (en) 2001-06-28
TR200201622T2 (en) 2002-10-21
DE50012094D1 (en) 2006-04-06
ATE316232T1 (en) 2006-02-15
EP1242775B1 (en) 2006-01-18

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