EP2145138B1 - Refrigerating appliance comprising a door air channel - Google Patents

Refrigerating appliance comprising a door air channel Download PDF

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Publication number
EP2145138B1
EP2145138B1 EP08749804.4A EP08749804A EP2145138B1 EP 2145138 B1 EP2145138 B1 EP 2145138B1 EP 08749804 A EP08749804 A EP 08749804A EP 2145138 B1 EP2145138 B1 EP 2145138B1
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EP
European Patent Office
Prior art keywords
inlet opening
air
air channel
storage chamber
door
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
EP08749804.4A
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German (de)
French (fr)
Other versions
EP2145138A2 (en
Inventor
Thomas Bischofberger
Hans Ihle
Frank Placke
Matthias Stahl
Ulrich Van Pels
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.)
Miele und Cie KG
BSH Hausgeraete GmbH
Original Assignee
Miele und Cie KG
BSH Hausgeraete GmbH
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Publication of EP2145138A2 publication Critical patent/EP2145138A2/en
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Publication of EP2145138B1 publication Critical patent/EP2145138B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • 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
    • 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
    • F25D17/067—Evaporator fan units
    • 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

Definitions

  • the present invention relates to a refrigerator with a body in which at least one storage chamber and an evaporator chamber are partitioned, and a door, wherein in a wall of the evaporator chamber, a first inlet opening facing the door is formed and extending in the door first air duct on the first inlet opening opens.
  • Such an air duct may be required, in particular, for refrigeration appliances with forced circulation in order to ensure a satisfactory exchange of air between the evaporator chamber and all storage chambers or all areas of a storage chamber.
  • a refrigerator of this type and according to the preamble of claim 1 is made WO2006 / 120079A1 known.
  • an outlet opening of the air duct with the door closed is placed directly opposite the inlet opening and close and substantially close to this.
  • Object of the present invention is to provide a refrigeration device of the type specified, the simple means a low-loss, against any shifts ensures tolerant passage of air from the first air passage into the first inlet opening between the door and the body of the refrigerator.
  • the object is achieved in that in a refrigerator with a body in which at least one storage chamber and an evaporator chamber are divided, and a door, wherein in a wall of the evaporator chamber, a door facing the first inlet opening is formed and extending in the door the first air passage having an outlet port which is opposed to the first inlet port by a gap, a flow guide from an edge of the first inlet port to the door and the air passage is formed to eject an obliquely directed against the guide surface air flow, and at least one curved Deflection plate crosses one of the first inlet opening opposite the outlet opening of the first air channel (6).
  • this expediently has larger dimensions than the outlet opening.
  • a guide plate parallel to the flow guide surface is preferably arranged in the first inlet opening.
  • the flow guide is preferably part of a ceiling of the body.
  • the first inlet opening opens onto a second air channel extending in the wall between a second inlet opening open to the bearing chamber and the evaporator chamber.
  • An air flow in this channel which may be driven by a blower, for example, to cold air from the evaporator chamber to convey into the storage chambers generated at the location of the first inlet opening according to the Bernoulli law, a negative pressure, so that the emerging from the first air passage in the door air is efficiently sucked into the second air duct.
  • the second air channel is also expedient for the second air channel to be curved at the level of the first inlet opening and for the first inlet opening to open on a convex side of the second air channel. If the air circuit passing through the first air passage is interrupted and no air from the first air passage into the first inlet port, a flowing between the second inlet opening of the evaporator chamber air flow can follow the course of the second air duct by Coanda effect loss.
  • the above-defined invention is particularly advantageously applicable to a refrigerator whose body has a first storage chamber adjacent to the evaporator chamber and a second storage chamber remote from the evaporator chamber, and the first air duct in the door leads from the second storage chamber past the first storage chamber to the evaporator chamber.
  • Fig. 1 shows in section the upper edge region of a refrigerator door 1 and the front edge of a ceiling 2 of the refrigerator body.
  • the door 1 has in a conventional manner an outer wall 3 made of sheet metal, an inner wall 4 made of plastic and an enclosed between the walls filling 5 of insulating foam material.
  • An air duct 6 extends in the door 1 between the inner wall 4 and the filling 5 of an inlet opening, not shown, at the level of a lower of two storage chambers of the refrigerator to an outlet opening 7 at an upper edge of the door.
  • the air channel 6 is formed on the majority of its length by an extrusion profile 8; on the upper end of the extrusion profile 8, an injection-molded Umlenkstutzen 9 is attached.
  • An upper end of the Umlenkstutzens 9 extends through an opening of the inner wall 4 and is latched to an externally plugged mask 10.
  • the insulation material filling 5 facing wall of the Umlenkstutzens 9 is curved in the upper quarter of a quarter circle; concentric with this curvature, a baffle plate 11 extends over the entire width of the outlet opening 7.
  • a partition wall 12 is suspended, which divides the interior of the body in an upper storage chamber 13 and an evaporator chamber 14.
  • the partition wall 12 has two inlet openings, a first inlet opening 15, which is separated from the outlet opening 7 by a communicating with the upper storage chamber 13 gap 17 and immediately adjacent to the ceiling 2, and a second inlet opening 16, which opens directly to the upper storage chamber 13 , Behind the dividing wall 12, a second air duct 18 extends from the second inlet opening 16 initially obliquely forward and upwards in the direction of the first inlet opening 15 to bend backwards in the amount of this and to open the evaporator chamber 14.
  • a fan 19 is mounted, which drives the air flow through the evaporator chamber 14.
  • a downstream The valve flap 20 arranged by the fan 19 distributes the air flow of the ventilator to outlet openings 21 opening directly into the upper storage chamber 13 or to a channel 24 extending downwardly within the rear wall 22 of the body to the second storage chamber 23.
  • Fig. 3 shows a simplified modification of the refrigerator according to the invention in one Fig. 1 analogue cut.
  • Elements of this embodiment, which correspond to those of the first embodiment, are designated by the same reference numerals and are only explained insofar as this is necessary for understanding the differences between the embodiments.
  • the evaporator chamber 14 has in the embodiment of Fig. 3 only a single inlet opening 15, which is opposite to the outlet opening 7.
  • horizontal guide plates 26 favor the influx of air to the evaporator chamber 14 in the horizontal direction to ensure that when air circulates only between the evaporator chamber 14 and the lower storage chamber 23, which is completely sucked from the outlet opening 7 air flow, from below However, air coming from the storage chamber 13 is prevented.
  • an upwardly directed flow arises in the gap 17, which additionally forces the stream coming from the air duct 6 against the ceiling 2.
  • no air can escape from this stream via the gap 17 in the upper storage chamber 13.

Description

Die vorliegende Erfindung betrifft ein Kältegerät mit einem Korpus, in dem wenigstens eine Lagerkammer und eine Verdampferkammer abgeteilt sind, und einer Tür, wobei in einer Wand der Verdampferkammer eine der Tür zugewandte erste Einlassöffnung gebildet ist und ein sich in der Tür erstreckender erster Luftkanal auf die erste Einlassöffnung mündet. Ein solcher Luftkanal kann insbesondere bei Kältegeräten mit Zwangsumwälzung erforderlich sein, um einen befriedigenden Luftaustausch zwischen der Verdampferkammer und allen Lagerkammern oder allen Bereichen einer Lagerkammer sicherzustellen. Ein Kältegerät dieses Typs und gemäß dem Obergeriff des Anspruchs 1 ist aus WO2006/120079A1 bekannt.The present invention relates to a refrigerator with a body in which at least one storage chamber and an evaporator chamber are partitioned, and a door, wherein in a wall of the evaporator chamber, a first inlet opening facing the door is formed and extending in the door first air duct on the first inlet opening opens. Such an air duct may be required, in particular, for refrigeration appliances with forced circulation in order to ensure a satisfactory exchange of air between the evaporator chamber and all storage chambers or all areas of a storage chamber. A refrigerator of this type and according to the preamble of claim 1 is made WO2006 / 120079A1 known.

Um einen möglichst verlustarmen Übergang der Luft von dem Luftkanal der Tür zu der Einlassöffnung zu gewährleisten, ist herkömmlicherweise eine Auslassöffnung des Luftkanals bei geschlossener Tür direkt gegenüber der Einlassöffnung platziert und schließt eng und im Wesentlichen dicht an diese an.In order to ensure a low-loss transition of the air from the air duct of the door to the inlet opening, conventionally, an outlet opening of the air duct with the door closed is placed directly opposite the inlet opening and close and substantially close to this.

Bei einem solchen Kältegerät ergibt sich das Problem, dass die Position der geschlossenen Tür in Bezug auf den Korpus durch Fertigungstoleranzen variieren kann und sich auch im Betrieb eines Kältegerätes, zum Beispiel aufgrund wechselnder Beladung der Tür, schwankenden Temperaturen oder dergl. ändern kann. Wenn die Auslassöffnung des Luftkanals aufgrund solcher Verschiebungen nicht exakt der Einlassöffnung gegenüber liegt, kommt es am Übergang zu einem Druckabfall, und der Luftdurchsatz nimmt ab. Wenn die Luftströmung durch einen Ventilator angetrieben ist, nimmt die zum Aufrechterhalten eines gewünschten Luftdurchsatzes erforderliche Gebläseleistung zu und belastet die Energiebilanz des Kältegeräts. Außerdem fördert der Druckabfall das Entweichen von Luft an Lecks des Übergangs zwischen dem Luftkanal und der Einlassöffnung oder das Zuströmen von Fremdluft. Bei Kältegeräten mit mehreren Lagerkammern kann dies die thermische Trennung der einzelnen Lagerkammern beeinträchtigen, wie im Folgenden noch deutlicher werden wird.In such a refrigeration device, there is the problem that the position of the closed door with respect to the body may vary by manufacturing tolerances and may also change during operation of a refrigerator, for example, due to changing loading of the door, fluctuating temperatures or the like. If the outlet opening of the air duct is not exactly opposite the inlet opening due to such displacements, a pressure drop occurs at the transition and the air flow rate decreases. When the air flow is driven by a fan, the fan power required to maintain a desired air flow increases and pollutes the energy balance of the refrigerator. In addition, the pressure drop promotes the escape of air at leaks of the transition between the air duct and the inlet opening or the inflow of external air. In refrigerators with multiple storage chambers, this may affect the thermal separation of the individual storage chambers, as will become more apparent below.

Aufgabe der vorliegenden Erfindung ist, ein Kältegerät der eingangs angegebenen Art zu schaffen, das mit einfachen Mitteln einen verlustarmen, gegen eventuelle Verschiebungen zwischen Tür und Korpus des Kältegeräts toleranten Übertritt der Luft von dem ersten Luftkanal in die erste Einlassöffnung gewährleistet.Object of the present invention is to provide a refrigeration device of the type specified, the simple means a low-loss, against any shifts ensures tolerant passage of air from the first air passage into the first inlet opening between the door and the body of the refrigerator.

Die Aufgabe wird dadurch gelöst, dass bei einem Kältegerät mit einem Korpus, in dem wenigstens eine Lagerkammer und eine Verdampferkammer abgeteilt sind, und einer Tür, wobei in einer Wand der Verdampferkammer eine der Tür zugewandte erste Einlassöffnung gebildet ist und ein sich in der Tür erstreckender erster Luftkanal eine Auslassöffnung aufweist, die der ersten Einlassöffnung durch einen Spalt getrennt gegenüber liegt, eine Strömungsleitfläche von einem Rand der ersten Einlassöffnung aus auf die Tür zuläuft und der Luftkanal geformt ist, um einen schräg gegen die Leitfläche gerichteten Luftstrom auszustoßen, und wenigstens eine gekrümmte Umlenkplatte eine der ersten Einlassöffnung gegenüber liegende Auslassöffnung des ersten Luftkanals (6) kreuzt. Es stellt sich nämlich heraus, dass ein solcher Luftstrom, wohl aufgrund des Coanda-Effektes, weitgehend verlustfrei und ohne mit ruhender Luft des Spalts in nennenswertem Umfang zu verwirbeln, an dieser Leitfläche entlang zu strömen vermag. Da, wenn die Luft im Inneren des Kältegerätes auf einem geschlossenen Weg zirkuliert, der Luftdurchsatz der Einlassöffnung nicht kleiner sein kann als der des Luftkanals, wird der von dem Luftkanal ausgestoßene Luftstrom von der Einlassöffnung im Wesentlichen vollständig aufgenommen.The object is achieved in that in a refrigerator with a body in which at least one storage chamber and an evaporator chamber are divided, and a door, wherein in a wall of the evaporator chamber, a door facing the first inlet opening is formed and extending in the door the first air passage having an outlet port which is opposed to the first inlet port by a gap, a flow guide from an edge of the first inlet port to the door and the air passage is formed to eject an obliquely directed against the guide surface air flow, and at least one curved Deflection plate crosses one of the first inlet opening opposite the outlet opening of the first air channel (6). It turns out that such an air flow, probably due to the Coanda effect, largely lossless and without swirling with dormant air of the gap to a significant extent, is able to flow along this guide surface along. Since, when the air circulates in the interior of the refrigerator in a closed path, the air flow rate of the inlet opening can not be smaller than that of the air duct, the air flow discharged from the air duct is substantially completely absorbed by the inlet opening.

Um sicherzustellen, dass trotz Toleranzen der Türposition der Strom des Luftkanals die erste Einlassöffnung sicher trifft, hat diese zweckmäßigerweise größere Abmessungen als die Auslassöffnung. Wenn der Luftstrom aus dem Luftkanal das Aufnahmevermögen der ersten Einlassöffnung voll auslastet, fließt über nicht von dem Strom getroffene Bereiche der ersten Einlassöffnung der Verdampferkammer praktisch keine Luft zu.In order to ensure that despite tolerances of the door position, the flow of the air duct securely meets the first inlet opening, this expediently has larger dimensions than the outlet opening. When the air flow from the air channel fully utilizes the capacity of the first inlet port, practically no air flows through non-flow areas of the first inlet port of the evaporator chamber.

Um diesen Effekt noch zu fördern, ist vorzugsweise in der ersten Einlassöffnung eine zu der Strömungsleitfläche parallele Leitplatte angeordnet.In order to further promote this effect, a guide plate parallel to the flow guide surface is preferably arranged in the first inlet opening.

Die Strömungsleitfläche ist vorzugsweise Teil einer Decke des Korpus.The flow guide is preferably part of a ceiling of the body.

Einer bevorzugten Ausgestaltung zufolge mündet die erste Einlassöffnung auf einen sich in der Wand zwischen einer zur Lagerkammer offenen zweiten Einlassöffnung und der Verdampferkammer erstreckenden zweiten Luftkanal. Eine Luftströmung in diesem Kanal, die z.B. durch ein Gebläse angetrieben sein kann, um Kaltluft aus der Verdampferkammer in die Lagerkammern zu befördern, erzeugt am Ort der ersten Einlassöffnung nach dem Bernoulli-Gesetz einen Unterdruck, so dass die aus dem ersten Luftkanal in der Tür austretende Luft effizient in den zweiten Luftkanal eingesaugt wird.According to a preferred embodiment, the first inlet opening opens onto a second air channel extending in the wall between a second inlet opening open to the bearing chamber and the evaporator chamber. An air flow in this channel, which may be driven by a blower, for example, to cold air from the evaporator chamber to convey into the storage chambers generated at the location of the first inlet opening according to the Bernoulli law, a negative pressure, so that the emerging from the first air passage in the door air is efficiently sucked into the second air duct.

Um diese Saugwirkung zu verstärken, ist es ferner zweckmäßig, dass der zweite Luftkanal in Höhe der ersten Einlassöffnung gekrümmt ist und die erste Einlassöffnung an einer konvexen Seite des zweiten Luftkanals mündet. Falls der über den ersten Luftkanal verlaufende Luftkreislauf unterbrochen ist und keine Luft vom ersten Luftkanal in die erste Einlassöffnung übertritt, kann eine zwischen der zweiten Einlassöffnung der Verdampferkammer verlaufende Luftströmung dem Verlauf des zweiten Luftkanals durch Coanda-Effekt verlustarm folgen.In order to enhance this suction effect, it is also expedient for the second air channel to be curved at the level of the first inlet opening and for the first inlet opening to open on a convex side of the second air channel. If the air circuit passing through the first air passage is interrupted and no air from the first air passage into the first inlet port, a flowing between the second inlet opening of the evaporator chamber air flow can follow the course of the second air duct by Coanda effect loss.

Besonders vorteilhaft anwendbar ist die oben definierte Erfindung bei einem Kältegerät, dessen Korpus eine der Verdampferkammer benachbarte erste Lagerkammer und eine von der Verdampferkammer entfernte zweite Lagerkammer aufweist und der erste Luftkanal in der Tür von der zweiten Lagerkammer an der ersten Lagerkammer vorbei zu der Verdampferkammer führt.The above-defined invention is particularly advantageously applicable to a refrigerator whose body has a first storage chamber adjacent to the evaporator chamber and a second storage chamber remote from the evaporator chamber, and the first air duct in the door leads from the second storage chamber past the first storage chamber to the evaporator chamber.

Weitere Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Figuren. Es zeigen:

Fig. 1
zeigt einen schematischen Schnitt durch einen vorderen oberen Eckbereich eines Kältegerätes gemäß der vorliegenden Erfindung;
Fig. 2
einen schematischen vollständigen Schnitt durch das Kältegerät der Fig. 1; und
Fig. 3
einen zu Fig. 1 analogen Schnitt gemäß einer zweiten Ausgestaltung der vorliegenden Erfindung.
Further advantages of the invention will become apparent from the following description of embodiments with reference to the accompanying figures. Show it:
Fig. 1
shows a schematic section through a front upper corner portion of a refrigerator according to the present invention;
Fig. 2
a schematic complete section through the refrigeration device of Fig. 1 ; and
Fig. 3
one too Fig. 1 analog section according to a second embodiment of the present invention.

Fig. 1 zeigt im Schnitt den oberen Randbereich einer Kältegerätetür 1 und den vorderen Rand einer Decke 2 des Kältegerätekorpus. Fig. 1 shows in section the upper edge region of a refrigerator door 1 and the front edge of a ceiling 2 of the refrigerator body.

Die Tür 1 hat in an sich bekannter Weise eine Außenwand 3 aus Blech, eine Innenwand 4 aus Kunststoff und eine zwischen den Wänden eingeschlossene Füllung 5 aus isolierendem Schaummaterial. Ein Luftkanal 6 verläuft in der Tür 1 zwischen Innenwand 4 und Füllung 5 von einer nicht dargestellten Einlassöffnung in Höhe einer unteren von zwei Lagerkammern des Kältegerätes zu einer Auslassöffnung 7 an einem oberen Rand der Tür. Der Luftkanal 6 ist auf dem überwiegenden Teil seiner Länge durch ein Extrusionsprofil 8 gebildet; auf das obere Ende des Extrusionsprofils 8 ist ein spritzgeformter Umlenkstutzen 9 aufgesteckt. Ein oberes Ende des Umlenkstutzens 9 erstreckt sich durch eine Öffnung der Innenwand 4 und ist an einer von außen aufgesteckten Maske 10 verrastet. Die der Isolationsmaterialfüllung 5 zugewandte Wand des Umlenkstutzens 9 ist im oberen Bereich viertelkreisförmig gekrümmt; konzentrisch zu dieser Krümmung erstreckt sich eine Umlenkplatte 11 über die gesamte Breite der Auslassöffnung 7. Durch diese Gestaltung des Umlenkstutzens 9 erhält die aus dem Luftkanal 6 austretende Luft einen Impuls in Tiefenrichtung des Kältegeräts, ohne dabei aber ihren Impuls in Aufwärtsrichtung völlig zu verlieren. Es entsteht so eine schräg nach oben gegen die Decke 2 gerichtete und an dieser entlang streichende Luftströmung 27.The door 1 has in a conventional manner an outer wall 3 made of sheet metal, an inner wall 4 made of plastic and an enclosed between the walls filling 5 of insulating foam material. An air duct 6 extends in the door 1 between the inner wall 4 and the filling 5 of an inlet opening, not shown, at the level of a lower of two storage chambers of the refrigerator to an outlet opening 7 at an upper edge of the door. The air channel 6 is formed on the majority of its length by an extrusion profile 8; on the upper end of the extrusion profile 8, an injection-molded Umlenkstutzen 9 is attached. An upper end of the Umlenkstutzens 9 extends through an opening of the inner wall 4 and is latched to an externally plugged mask 10. The insulation material filling 5 facing wall of the Umlenkstutzens 9 is curved in the upper quarter of a quarter circle; concentric with this curvature, a baffle plate 11 extends over the entire width of the outlet opening 7. By this design of the Umlenkstutzens 9 exiting the air duct 6 receives air impulse in the depth direction of the refrigerator, but without losing their momentum in the upward direction completely. The result is an obliquely upward directed against the ceiling 2 and along this stroking air flow 27th

Von der Decke 2 des Kältegerätekorpus ist eine Trennwand 12 abgehängt, die den Innenraum des Korpus in eine obere Lagerkammer 13 und eine Verdampferkammer 14 unterteilt. Die Trennwand 12 hat zwei Einlassöffnungen, eine erste Einlassöffnung 15, die der Auslassöffnung 7 durch einen mit der oberen Lagerkammer 13 kommunizierenden Spalt 17 getrennt gegenüberliegt und unmittelbar an die Decke 2 angrenzt, und eine zweite Einlassöffnung 16, die unmittelbar auf die obere Lagerkammer 13 mündet. Hinter der Trennwand 12 erstreckt sich ein zweiter Luftkanal 18 von der zweiten Einlassöffnung 16 zunächst schräg nach vorn und nach oben in Richtung der ersten Einlassöffnung 15, um in Höhe von dieser nach hinten abzubiegen und auf die Verdampferkammer 14 zu münden.From the ceiling 2 of the refrigerator body, a partition wall 12 is suspended, which divides the interior of the body in an upper storage chamber 13 and an evaporator chamber 14. The partition wall 12 has two inlet openings, a first inlet opening 15, which is separated from the outlet opening 7 by a communicating with the upper storage chamber 13 gap 17 and immediately adjacent to the ceiling 2, and a second inlet opening 16, which opens directly to the upper storage chamber 13 , Behind the dividing wall 12, a second air duct 18 extends from the second inlet opening 16 initially obliquely forward and upwards in the direction of the first inlet opening 15 to bend backwards in the amount of this and to open the evaporator chamber 14.

Wie Fig. 2 zeigt, ist am rückwärtigen Ende der Verdampferkammer 14 ein Ventilator 19 angebracht, der den Luftstrom durch die Verdampferkammer 14 antreibt. Eine stromabwärts vom Ventilator 19 angeordnete Ventilklappe 20 verteilt den Luftstrom des Ventilators auf direkt in die obere Lagerkammer 13 mündende Auslassöffnungen 21 bzw. einen sich innerhalb der Rückwand 22 des Korpus abwärts zu der zweiten Lagerkammer 23 erstreckenden Kanal 24.As Fig. 2 shows, at the rear end of the evaporator chamber 14, a fan 19 is mounted, which drives the air flow through the evaporator chamber 14. A downstream The valve flap 20 arranged by the fan 19 distributes the air flow of the ventilator to outlet openings 21 opening directly into the upper storage chamber 13 or to a channel 24 extending downwardly within the rear wall 22 of the body to the second storage chamber 23.

So lange die Ventilklappe 20 die Kaltluftzufuhr zu der unteren Lagerkammer 23 sperrt, tritt an der Auslassöffnung 7 keine Luft aus, und über die Einlassöffnungen 15, 16 unmittelbar bzw. über den Spalt 17 angesaugte Luft entstammt der oberen Lagerkammer 13. Wenn nur die untere Lagerkammer 23 versorgt wird, entspricht der Durchsatz des Luftkanals 6 dem des Ventilators 19. Der aus dem Luftkanal 6 an der Auslassöffnung 7 austretende Luftstrom trifft schräg auf die Decke 2, streicht laminar und ohne Auffächern an dieser entlang und trifft daher im Wesentlichen ungedämpft auf die erste Einlassöffnung 15. Da der Luftstrom die Aufnahmefähigkeit der Verdampferkammer voll auslastet, wird keine weitere Luft aus der oberen Lagerkammer 13 in die Verdampferkammer 14 eingesogen, und die Luft zirkuliert, von der Lagerkammer 13 thermisch getrennt, nur zwischen der Verdampferkammer 14 und der unteren Lagerkammer 23.As long as the valve flap 20 blocks the supply of cold air to the lower storage chamber 23, no air exits at the outlet opening 7, and air sucked in via the inlet openings 15, 16 directly via the gap 17 originates from the upper storage chamber 13. If only the lower storage chamber The air flow emerging from the air duct 6 at the outlet opening 7 impinges obliquely on the ceiling 2, passes laminarly and without fanning along the latter and therefore strikes the first one essentially unattenuated Inlet Opening 15. Since the airflow fully utilizes the capacity of the evaporator chamber, no further air from the upper storage chamber 13 is drawn into the evaporator chamber 14, and the air circulates, thermally separated from the storage chamber 13, only between the evaporator chamber 14 and the lower storage chamber 23 ,

Wenn die Klappe 20 eine Zwischenstellung einnimmt, in der beide Kammern 13, 23 mit Kaltluft vom Verdampfer 25 versorgt werden, dann strömt Luft über die gesamte Länge des zweiten Luftkanals 18, von der Einlassöffnung 16 bis in die Verdampferkammer 14. Diese Strömung erzeugt einen Unterdruck in Höhe der Einlassöffnung 15, so dass auch durch diese Luft in den Kanal 18 eingesaugt wird. Diese Saugwirkung führt dazu, dass die von der Auslassöffnung 7 ausgestoßene Luft, auch wenn die Auslassöffnung 7 nicht ideal auf die Einlassöffnung 15 ausgerichtet ist, vollständig eingesaugt wird und sich nicht in der oberen Lagerkammer 13 verteilt. So ist ein Zufluss von Luft aus dem Luftkanal 6 in die obere Lagerkammer 13 auch dann ausgeschlossen, wenn beide Lagerkammern gleichzeitig mit Kaltluft aus der Verdampferkammer 14 beaufschlagt werden.When the flap 20 assumes an intermediate position in which both chambers 13, 23 are supplied with cold air from the evaporator 25, then air flows over the entire length of the second air channel 18, from the inlet opening 16 to the evaporator chamber 14. This flow creates a negative pressure at the level of the inlet opening 15, so that is sucked through this air into the channel 18. This suction causes the air ejected from the outlet port 7 to be completely sucked even when the outlet port 7 is not perfectly aligned with the inlet port 15 and is not dispersed in the upper bearing chamber 13. Thus, an inflow of air from the air duct 6 in the upper storage chamber 13 is also excluded if both storage chambers are simultaneously acted upon with cold air from the evaporator chamber 14.

Fig. 3 zeigt eine vereinfachte Abwandlung des erfindungsgemäßen Kältegeräts in einem zu Fig. 1 analogen Schnitt. Elemente dieser Ausgestaltung, die solchen der ersten Ausgestaltung entsprechen, sind mit denselben Bezugszeichen bezeichnet und werden nur insoweit erläutert, als dies zum Verständnis der Unterschiede zwischen den Ausgestaltungen notwendig ist. Fig. 3 shows a simplified modification of the refrigerator according to the invention in one Fig. 1 analogue cut. Elements of this embodiment, which correspond to those of the first embodiment, are designated by the same reference numerals and are only explained insofar as this is necessary for understanding the differences between the embodiments.

Die Verdampferkammer 14 hat in der Ausgestaltung der Fig. 3 nur eine einzige Einlassöffnung 15, die der Auslassöffnung 7 gegenüberliegt. In der Einlassöffnung angeordnete horizontale Führungslamellen 26 begünstigen den Zustrom von Luft zur Verdampferkammer 14 in horizontaler Richtung, um sicherzustellen, dass wenn Luft nur zwischen der Verdampferkammer 14 und der unteren Lagerkammer 23 zirkuliert, der aus der Auslassöffnung 7 austretende Luftstrom vollständig eingesaugt wird, von unten aus der Lagerkammer 13 kommende Luft jedoch abgehalten wird. Wenn Luft durch beide Lagerkammern 13, 23 zirkuliert, entsteht in dem Spalt 17 eine aufwärts gerichtete Strömung, die den aus dem Luftkanal 6 kommenden Strom zusätzlich gegen die Decke 2 drängt. So kann keine Luft aus diesem Strom über den Spalt 17 in die obere Lagerkammer 13 entweichen.The evaporator chamber 14 has in the embodiment of Fig. 3 only a single inlet opening 15, which is opposite to the outlet opening 7. In the inlet opening arranged horizontal guide plates 26 favor the influx of air to the evaporator chamber 14 in the horizontal direction to ensure that when air circulates only between the evaporator chamber 14 and the lower storage chamber 23, which is completely sucked from the outlet opening 7 air flow, from below However, air coming from the storage chamber 13 is prevented. When air circulates through both storage chambers 13, 23, an upwardly directed flow arises in the gap 17, which additionally forces the stream coming from the air duct 6 against the ceiling 2. Thus, no air can escape from this stream via the gap 17 in the upper storage chamber 13.

Claims (7)

  1. Refrigerating appliance with a body (2) in which at least one storage chamber (13, 23) and one evaporator chamber (14) are separated and a door (1), wherein a first inlet opening (15) is formed in a wall (12) of the evaporator chamber (14) facing towards the door (1) and a first air channel (6) extending in the door (1) has an outlet opening (7), which lies opposite the first inlet opening (15) separated by a gap (17), wherein a flow guidance surface (2) runs from an edge of the first inlet opening (15) to the door, and wherein the first air channel (6) is formed in order to expel a directed airflow, characterised in that the airflow is directed at an angle against the flow guidance surface (2) and that at least one curved diversion plate (11) crosses an outlet opening (7) of the first air channel (6) arranged opposite the first inlet opening (15).
  2. Refrigerating appliance according to claim 1, characterised in that the first inlet opening (15) has larger dimensions than the outlet opening (7).
  3. Refrigerating appliance according to claim 1 or 2, characterised in that the flow guidance surface is part of a ceiling of the body (2).
  4. Refrigerating appliance according to one of the previous claims, characterised in that a guide plate parallel to the flow guidance surface is arranged in the first inlet opening.
  5. Refrigerating appliance according to one of the previous claims, characterised in that a first inlet opening (15) emerges into a second air channel (18) extending in the wall (12) between a second inlet opening (16) open to the storage chamber (13) and the evaporator chamber (14).
  6. Refrigerating appliance according to claim 5, characterised in that the second air channel (18) is curved at the height of the first inlet opening (15) and the first inlet opening (15) emerges on a convex side of the second air channel (18).
  7. Refrigerating appliance according to one of the previous claims, characterised in that the body (2) has a first storage chamber (13) adjacent to the first evaporator chamber (14) and a second storage chamber (23) away from the evaporator chamber (14) and that the first air channel (6) leads from the second storage chamber (23) past the first storage chamber (13) to the evaporator chamber (14).
EP08749804.4A 2007-05-08 2008-04-28 Refrigerating appliance comprising a door air channel Not-in-force EP2145138B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007021550A DE102007021550A1 (en) 2007-05-08 2007-05-08 Refrigeration device with door air duct
PCT/EP2008/055182 WO2008135434A2 (en) 2007-05-08 2008-04-28 Refrigerating appliance comprising a door air channel

Publications (2)

Publication Number Publication Date
EP2145138A2 EP2145138A2 (en) 2010-01-20
EP2145138B1 true EP2145138B1 (en) 2016-04-20

Family

ID=39829258

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08749804.4A Not-in-force EP2145138B1 (en) 2007-05-08 2008-04-28 Refrigerating appliance comprising a door air channel

Country Status (5)

Country Link
EP (1) EP2145138B1 (en)
CN (1) CN101680700B (en)
DE (1) DE102007021550A1 (en)
RU (1) RU2463533C2 (en)
WO (1) WO2008135434A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR201103854A1 (en) * 2011-04-20 2012-11-21 Arçeli̇k Anoni̇m Şi̇rketi̇ A refrigerator with evaporator with improved cooling efficiency.
EP3240981B1 (en) 2014-12-31 2019-12-18 BSH Hausgeräte GmbH A cooling device having an air channel and a baffle
KR101687897B1 (en) * 2015-02-13 2016-12-19 엘지전자 주식회사 Refrigerator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB721035A (en) * 1952-07-24 1954-12-29 Gen Electric Improvements in and relating to refrigerator cabinets
US3025683A (en) * 1957-11-08 1962-03-20 Whirlpool Co Air circulation system and structure
KR0171523B1 (en) * 1996-09-25 1999-03-20 배순훈 Cool air management apparatus of a refrigerator
DE10143242A1 (en) * 2001-09-04 2003-03-20 Bsh Bosch Siemens Hausgeraete Refrigeration device with cooling air circulation
RU40447U1 (en) * 2004-04-19 2004-09-10 Федеральное государственное унитарное предприятие "Производственное объединение "Завод имени Серго" REFRIGERATOR
DE102005021611A1 (en) 2005-05-10 2006-11-23 BSH Bosch und Siemens Hausgeräte GmbH The refrigerator

Also Published As

Publication number Publication date
CN101680700B (en) 2013-08-14
CN101680700A (en) 2010-03-24
RU2009142536A (en) 2011-06-20
WO2008135434A3 (en) 2009-04-30
DE102007021550A1 (en) 2008-11-13
WO2008135434A2 (en) 2008-11-13
EP2145138A2 (en) 2010-01-20
RU2463533C2 (en) 2012-10-10

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