EP2896916B1 - Refrigeration and/or freezer device - Google Patents

Refrigeration and/or freezer device Download PDF

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Publication number
EP2896916B1
EP2896916B1 EP15151300.9A EP15151300A EP2896916B1 EP 2896916 B1 EP2896916 B1 EP 2896916B1 EP 15151300 A EP15151300 A EP 15151300A EP 2896916 B1 EP2896916 B1 EP 2896916B1
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EP
European Patent Office
Prior art keywords
cold air
compartment
unit
opening
volume flow
Prior art date
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EP15151300.9A
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German (de)
French (fr)
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EP2896916A1 (en
Inventor
Eugen Schmid
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
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Liebherr Hausgeraete Ochsenhausen GmbH
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Publication of EP2896916A1 publication Critical patent/EP2896916A1/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • 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
    • F25D17/08—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 using ducts
    • 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
    • F25D2317/061—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 through special compartments
    • 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
    • F25D2317/066—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 supply
    • F25D2317/0663—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 supply from the mullion
    • 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
    • F25D2317/066—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 supply
    • F25D2317/0667—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 supply from the refrigerator
    • 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
    • F25D2325/00—Charging, supporting or discharging the articles to be cooled, not provided for in other groups of this subclass
    • F25D2325/021—Shelves with several possible configurations

Definitions

  • the present invention relates to a refrigerator and / or freezer with at least one refrigerated interior, in which at least one cold storage compartment is located, wherein the device has at least one cold air duct and at least one evaporator for generating cold air in the cold air duct, wherein the cold air duct via at least one Opening is connected to the cold storage compartment, so that cold air from the cold air duct can flow into the cold storage compartment.
  • Cooling or freezing devices are known from the prior art, which have a so-called cold storage compartment, in which during normal operation of the device, a temperature between the temperature in a freezer compartment and the temperature is in a refrigerator. Usually, the temperature in the cold storage compartment is set in a range of 0 ° C to 3 ° C.
  • US5816061 discloses a refrigerator and / or freezer according to the preamble of claim 1.
  • EP2789937A1 discloses a refrigerator and / or freezer according to Article 54 (3) EPC.
  • the present invention has the object, a cooling and / or freezer of the type mentioned in such a way that the temperature distribution in the device is particularly flexible adjustable.
  • the cold storage compartment is divided by means of at least one variably arranged in its position separating means in at least a first and in at least a second compartment, wherein the first compartment via at least a first opening and wherein the second compartment via at least one second opening with the Cold air duct are connected and wherein in the first and / or in the second opening at least one means for changing the cold air volume flow through the opening is present, which is designed or adjustable so that the cold air volume flows in at least one operating state of the device through the first and through to distinguish the second opening from each other.
  • the invention is therefore based on the idea to divide the cold storage compartment by at least one can be arranged at different position separating means, in particular by at least one partition in at least two compartments, which can be acted upon with different cold air flow rates, resulting in correspondingly different temperatures in the two compartments.
  • This makes it possible, for example, to operate the first compartment at a higher temperature than the second compartment. Due to the variably arranged separating means, it is possible to adjust the volume of these two different compartments and thus also the volume of the compartments operated at different temperatures according to the needs of the user.
  • the means for changing the cold air volume flow in the form of one or more flaps or the like and / or in the form of one or more fans are formed. Both by flaps and by fans, the cold air volume flow can be varied through said openings, so that different temperatures can be set in the two compartments.
  • the means for changing the cold air volume flow present only in one of the openings are. It is conceivable that one of the openings, for example the first or the second opening, are not made with such means and are preferably always open. In this case, an adjustment of the volume flow takes place only in the other of the subjects.
  • the two mentioned compartments are arranged side by side or one above the other.
  • the separating means is a dividing wall which can be fixed at different positions or is displaceably arranged.
  • At least one further cold storage compartment is arranged, which is connected via at least one further opening with the cold air duct, wherein it is preferably provided that in this further opening at least one further means for changing the cold air volume flow through this further opening is present. Also in this further means may be, for example, a flap or a fan, etc.
  • the present invention further relates to a method for operating a refrigerator and / or freezer according to one of claims 1 to 4, wherein at least one temperature sensor for detecting a temperature actual value and at least one control or regulating unit is provided, which with the temperature sensor in Connection stands, wherein the control or regulating unit controls the adjustment of the means for changing the volume flow in dependence on a difference between the measured temperature actual value and a desired value.
  • an increase of the cold air volume flow into this compartment can be initiated by the control or regulation unit in order to correspondingly lower the actual temperature value.
  • the cold air is introduced exclusively or predominantly in the first or in the second compartment by adjusting the means for changing the cold air volume flow. For example, if the cold air volume flow is introduced exclusively into the first compartment, a lower temperature can be achieved in this compartment than in the second compartment and vice versa.
  • the cold air is introduced by flowing the means for changing the cold air flow in the first and in the second compartment but preferably in all cold storage compartments, especially when the evaporator temperature, in particular the evaporator surface temperature exceeds a temperature limit ,
  • This temperature limit may be the actual temperature measured in one of the compartments.
  • the single figure shows a schematic longitudinal section through a cooling device according to the present invention and a schematic plan view of a cold storage compartment.
  • FIG. 1 shows by the reference numeral 100 in a schematic longitudinal sectional view of an inventive cooling device.
  • This has a body in which there are located a top cooling part 110 and a cold storage compartment 120 separated thereunder by a separating plate 300.
  • the cold storage compartment 120 is divided by a further horizontal partition plate 302 into an upper area 122 and into a lower area 124.
  • evaporator 200 which is part of a consisting of compressor, condenser, throttle capillary and evaporator refrigerant circuit.
  • the reference numeral 500 denotes a cold air duct, which is located in the rear region of the device or the interior and is separated from the cooled working space by a vertical partition plate.
  • Reference numeral 400 designates a fan, which leads the cold air generated by the evaporator 300 into the cooling air duct 500. As shown in the figure, the cooling air passage leads both upwards into the cooling part 110 and down into the cold storage compartment 120.
  • the reference numeral K3 is a damper that opens or closes an opening 04 of the cold air duct 500 and can be initiated by the cold air in the cooling part 110 of the device, provided that the flap K3 is open.
  • the lower part of the cold air duct 500 is likewise provided with openings 01 and 03 which connect the cold air duct 500 with the region 122 or the region 124 of the cold storage compartment. These openings 01 and 03 are closed by flaps K1 and K2.
  • the reference numeral 123 denotes the rear wall of the upper cold storage compartment 122.
  • this area 122 is subdivided into two adjacent compartments 122a (1st compartment) and 122b (2nd compartment).
  • Each of these Fan is connected via an opening 01 or 02 with the cold air duct in connection.
  • the opening 01 is closable by a flap K1
  • the opening 02 has no such flap, that is always open.
  • the two compartments 122 a and 122 b are separated by a displaceable in the horizontal direction partition plate T from each other, so that the volumes of the compartments 122 a and 122 b can be changed.
  • the cold air inlet for the second compartment 122 b shown on the right is always open, whereas the cold air inlet for the first compartment 122 a shown on the left can be closed by an air flap K 1.
  • the further air flap K2 is arranged in the air duct between the upper and the lower cold storage compartments 122, 124. Both flaps K1 and K2 are opened or closed depending on the temperature.
  • the second compartment 122 b of the cold storage compartment 122 can be acted upon with cold air, whereas the other cold storage areas are not subjected to cold air. If this mode of operation is disabled, that is, the flaps K1 and K2 are opened, the tray 122 b is operated as a normal cold storage compartment.
  • this operating mode is activated and both flaps K1 and K2 are closed or their flow cross-section throttled, with the result that the cooling is predominantly due to the constantly open Air inlet 02 of the right part 122 b of the upper compartment 122, whereby this area is colder than the remaining cold storage compartment area, that is colder than the compartments 122 a and 120.
  • This mode of operation is particularly switched on when the evaporator 200 is in its cooling phase ,
  • the louvers K1 and K2 are opened, so that the comparatively warm air can flow in here as well.
  • the two louvers K1 and K2 are closed as soon as the evaporator surface temperature is lower than the cold storage compartment temperature.
  • the temperature air sensor is preferably positioned in the area throttled by the lower air flap K2, with the result that the control area is shifted overall in the direction of "colder".
  • the foreclosed area that is with closed flaps K1 and K2 prevails in the compartments 120 and 122 a, the usual cold storage compartment temperature, while in the non-sealed area, that is, in the second compartment 122 b, the temperature, for example 2 - 3 K colder.
  • the evaporator is lying, that is installed horizontally below a partition plate.
  • the cold air duct preferably also extends in the rear region of the cooled interior.
  • the cold air duct in this case preferably has an upper and a lower opening, through which there is a connection between the cooling part 110 and the cold air duct or between the cold storage part and the cold air duct.
  • the fan in the region of the upper opening of the cold air duct.
  • the fan then conveys the cold air through the cold air duct from top to bottom and introduces the air into the cold storage compartment located below. From there it flows, for example, through an area at the front between a horizontal partition plate and the door upwards into the cooling compartment and from there back into the cold air duct.
  • air dampers instead of air dampers, other means for adjusting the volume flow of cold air can be used, such as fans, which are arranged in the region of the openings between the compartments and the cold air duct.
  • an opening 04 in the cold air duct which can be throttled or closed by a flap K3.
  • This opening cold air enters the upper part of the cold air duct, which is located in the rear area of the cooling part.
  • the opening of the flap K3 can be effected as a function of the difference between a measured actual value in the cooling part 110 and a desired value.
  • adjustable in position separator plate T it is possible to operate the operable at different temperatures cold storage areas 122 a and 122 b in size and thus to be able to adapt to the individual needs of a user.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Description

Die vorliegende Erfindung betrifft ein Kühl- und/ oder Gefriergerät mit wenigstens einem gekühlten Innenraum, in dem sich wenigstens ein Kaltlagerfach befindet, wobei das Gerät wenigstens einen Kaltluftkanal sowie wenigstens einen Verdampfer zur Erzeugung von Kaltluft in dem Kaltluftkanal aufweist, wobei der Kaltluftkanal über wenigstens eine Öffnung mit dem Kaltlagerfach verbunden ist, sodass Kaltluft aus dem Kaltluftkanal in das Kaltlagerfach einströmen kann.The present invention relates to a refrigerator and / or freezer with at least one refrigerated interior, in which at least one cold storage compartment is located, wherein the device has at least one cold air duct and at least one evaporator for generating cold air in the cold air duct, wherein the cold air duct via at least one Opening is connected to the cold storage compartment, so that cold air from the cold air duct can flow into the cold storage compartment.

Aus dem Stand der Technik sind Kühl- bzw. Gefriergeräte bekannt, die über ein sogenanntes Kaltlagerfach verfügen, in dem im Normalbetrieb des Gerätes eine Temperatur zwischen der Temperatur in einem Gefrierteil und der Temperatur in einem Kühlteil liegt. Üblicherweise wird die Temperatur in dem Kaltlagerfach in einem Bereich von 0 °C bis 3 °C eingestellt. US5816061 offenbart eines Kühl - und/oder Gefriergerät gemäß dem Oberbegriff des Anspruchs 1.Cooling or freezing devices are known from the prior art, which have a so-called cold storage compartment, in which during normal operation of the device, a temperature between the temperature in a freezer compartment and the temperature is in a refrigerator. Usually, the temperature in the cold storage compartment is set in a range of 0 ° C to 3 ° C. US5816061 discloses a refrigerator and / or freezer according to the preamble of claim 1.

EP2789937A1 offenbart eines Kühl - und/oder Gefriergerät nach Artikel 54(3) EPÜ. Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Kühl- und/ oder Gefriergerät der eingangs genannten Art dahingehend weiterzubilden, dass die Temperaturverteilung im Gerät besonders flexibel einstellbar ist. EP2789937A1 discloses a refrigerator and / or freezer according to Article 54 (3) EPC. The present invention has the object, a cooling and / or freezer of the type mentioned in such a way that the temperature distribution in the device is particularly flexible adjustable.

Diese Aufgabe wird durch ein Kühl- und/ oder Gefriergerät mit den Merkmalen des Anspruchs 1 gelöst. Danach ist vorgesehen, dass das Kaltlagerfach mittels zumindest eines in seiner Position veränderlich angeordneten Trennmittels in wenigstens ein erstes und in wenigstens ein zweites Fach unterteilt ist, wobei das erste Fach über wenigstens eine erste Öffnung und wobei das zweite Fach über wenigstens eine zweite Öffnung mit dem Kaltluftkanal verbunden sind und wobei in der ersten und/oder in der zweiten Öffnung zumindest ein Mittel zur Veränderung des Kaltluftvolumenstroms durch die Öffnung vorhanden ist, das derart ausgebildet oder einstellbar ist, dass sich die Kaltluftvolumenströme in wenigstens einem Betriebszustand des Gerätes durch die erste und durch die zweite Öffnung voneinander unterscheiden.This object is achieved by a refrigerator and / or freezer with the features of claim 1. Thereafter, it is provided that the cold storage compartment is divided by means of at least one variably arranged in its position separating means in at least a first and in at least a second compartment, wherein the first compartment via at least a first opening and wherein the second compartment via at least one second opening with the Cold air duct are connected and wherein in the first and / or in the second opening at least one means for changing the cold air volume flow through the opening is present, which is designed or adjustable so that the cold air volume flows in at least one operating state of the device through the first and through to distinguish the second opening from each other.

Der Erfindung liegt somit der Gedanke zugrunde, das Kaltlagerfach durch wenigstens ein an unterschiedlichen Position anordenbares Trennmittel, insbesondere durch wenigstens eine Trennwand in wenigstens zwei Fächer zu unterteilen, die mit unterschiedlichen Kaltluftvolumenströmen beaufschlagt werden können, sodass sich entsprechend unterschiedliche Temperaturen in den beiden Fächern ergeben. Dadurch ist es möglich, beispielsweise das erste Fach mit einer höheren Temperatur zu betreiben als das zweite Fach. Durch das veränderlich angeordnete Trennmittel ist es möglich, das Volumen dieser beiden unterschiedlichen Fächer und damit auch das Volumen der bei unterschiedlichen Temperaturen betriebenen Fächer nach dem Bedarf des Nutzers einzustellen.The invention is therefore based on the idea to divide the cold storage compartment by at least one can be arranged at different position separating means, in particular by at least one partition in at least two compartments, which can be acted upon with different cold air flow rates, resulting in correspondingly different temperatures in the two compartments. This makes it possible, for example, to operate the first compartment at a higher temperature than the second compartment. Due to the variably arranged separating means, it is possible to adjust the volume of these two different compartments and thus also the volume of the compartments operated at different temperatures according to the needs of the user.

In einer bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass die Mittel zur Veränderung des Kaltluftvolumenstroms in Form einer oder mehrerer Klappen oder dergleichen und/oder in Form eines oder mehrerer Ventilatoren ausgebildet sind. Sowohl durch Klappen als auch durch Ventilatoren lässt sich der Kaltluftvolumenstrom durch die genannten Öffnungen variieren, sodass in den beiden Fächern unterschiedliche Temperaturen eingestellt werden können.In a preferred embodiment of the invention it is provided that the means for changing the cold air volume flow in the form of one or more flaps or the like and / or in the form of one or more fans are formed. Both by flaps and by fans, the cold air volume flow can be varied through said openings, so that different temperatures can be set in the two compartments.

In einer bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass die Mittel zur Veränderung des Kaltluftvolumenstroms nur in einer der Öffnungen vorhanden sind. Denkbar ist es, dass eine der Öffnungen, beispielsweise die erste oder die zweite Öffnung nicht mit derartigen Mitteln ausgeführt sind und vorzugsweise immer offen sind. In diesem Fall erfolgt eine Verstellung des Volumenstroms nur in dem anderen der Fächer.In a preferred embodiment of the invention, it is provided that the means for changing the cold air volume flow present only in one of the openings are. It is conceivable that one of the openings, for example the first or the second opening, are not made with such means and are preferably always open. In this case, an adjustment of the volume flow takes place only in the other of the subjects.

Unter dem Begriff "Veränderung des Kaltluftvolumenstroms" ist auch der Fall zu verstehen, dass keine Kaltluft eingeführt wird, dass also beispielsweise eine Klappe oder dergleichen vollständig geschlossen ist.The term "change in the cold air volume flow" is also the case to understand that no cold air is introduced, so that, for example, a flap or the like is completely closed.

In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass die beiden genannten Fächer nebeneinander oder auch übereinander angeordnet sind. Weiterhin kann vorgesehen sein, dass es sich bei den Trennmitteln um eine Trennwand handelt, die an unterschiedlichen Positionen fixierbar ist bzw. verschieblich angeordnet ist.In a further embodiment of the invention it is provided that the two mentioned compartments are arranged side by side or one above the other. Furthermore, it can be provided that the separating means is a dividing wall which can be fixed at different positions or is displaceably arranged.

In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass neben oder unterhalb oder oberhalb des ersten und des zweiten Faches wenigstens ein weiteres Kaltlagerfach angeordnet ist, das über wenigstens eine weitere Öffnung mit dem Kaltluftkanal verbunden ist, wobei vorzugsweise vorgesehen ist, dass in dieser weiteren Öffnung wenigstens ein weiteres Mittel zur Veränderung des Kaltluftvolumenstroms durch diese weitere Öffnung vorhanden ist. Auch bei diesem weiteren Mittel kann es sich beispielsweise um eine Klappe oder einen Ventilator etc. handeln.In a further embodiment of the invention it is provided that next to or below or above the first and the second compartment at least one further cold storage compartment is arranged, which is connected via at least one further opening with the cold air duct, wherein it is preferably provided that in this further opening at least one further means for changing the cold air volume flow through this further opening is present. Also in this further means may be, for example, a flap or a fan, etc.

Die vorliegende Erfindung betrifft des Weiteren ein Verfahren zum Betreiben eines Kühl- und/ oder Gefriergerätes nach einem der Ansprüche 1 bis 4, wobei wenigstens ein Temperaturfühler zur Erfassung eines Temperatur-Istwertes und wenigstens eine Steuer- oder Regelungseinheit vorgesehen ist, die mit dem Temperaturfühler in Verbindung steht, wobei die Steuer- oder Regelungseinheit die Verstellung der Mittel zur Veränderung des Volumenstroms in Abhängigkeit von einer Differenz zwischen den gemessenen Temperatur-Istwert und einem Sollwert ansteuert.The present invention further relates to a method for operating a refrigerator and / or freezer according to one of claims 1 to 4, wherein at least one temperature sensor for detecting a temperature actual value and at least one control or regulating unit is provided, which with the temperature sensor in Connection stands, wherein the control or regulating unit controls the adjustment of the means for changing the volume flow in dependence on a difference between the measured temperature actual value and a desired value.

Wird beispielsweise festgestellt, dass die Temperatur in einem der Fächer einen Grenzwert übersteigt, kann durch die Steuer- oder Regelungseinheit eine Erhöhung des Kaltluftvolumenstroms in dieses Fach veranlasst werden, um den Temperatur-Istwert entsprechend abzusenken.If it is determined, for example, that the temperature in one of the compartments exceeds a limit value, an increase of the cold air volume flow into this compartment can be initiated by the control or regulation unit in order to correspondingly lower the actual temperature value.

Weiterhin kann vorgesehen sein, dass im Normalbetrieb des Gerätes, also nicht in dem Abtaumodus, und insbesondere in der Abkühlphase des Verdampfers die Kaltluft durch die Einstellung der Mittel zur Veränderung des Kaltluftvolumenstroms ausschließlich oder überwiegend in das erste oder in das zweite Fach eingeleitet wird. Wird der Kaltluftvolumenstrom beispielsweise ausschließlich in das erste Fach eingeleitet, lässt sich in diesem Fach eine geringere Temperatur erzielen, als in dem zweiten Fach und umgekehrt.Furthermore, it can be provided that during normal operation of the device, ie not in the defrost mode, and in particular in the cooling phase of the evaporator, the cold air is introduced exclusively or predominantly in the first or in the second compartment by adjusting the means for changing the cold air volume flow. For example, if the cold air volume flow is introduced exclusively into the first compartment, a lower temperature can be achieved in this compartment than in the second compartment and vice versa.

Weiterhin kann vorgesehen sein, dass in der Abtauphase des Gerätes die Kaltluft durch Einströmen der Mittel zur Veränderung des Kaltluftvolumenstroms in das erste sowie auch in das zweite Fach aber vorzugsweise in alle Kaltlagerfächer eingeleitet wird, insbesondere sobald die Verdampfertemperatur, insbesondere die Verdampferoberflächentemperatur, einen Temperaturgrenzwert übersteigt. Bei diesem Temperaturgrenzwert kann es sich um die in einem der Fächer gemessene Ist-Temperatur handeln.Furthermore, it can be provided that in the defrosting phase of the device, the cold air is introduced by flowing the means for changing the cold air flow in the first and in the second compartment but preferably in all cold storage compartments, especially when the evaporator temperature, in particular the evaporator surface temperature exceeds a temperature limit , This temperature limit may be the actual temperature measured in one of the compartments.

Weiterhin kann vorgesehen sein, dass die Zufuhr von Kaltluft in wenigstens eines der Fächer unterbunden wird, wenn die Verdampfertemperatur, insbesondere die Verdampferoberflächentemperatur, geringer ist als ein Temperaturgrenzwert und vorzugsweise geringer ist als ein Sollwert für die Temperatur in diesem Fach.Furthermore, provision can be made for the supply of cold air to be prevented in at least one of the compartments if the evaporator temperature, in particular the evaporator surface temperature, is lower than a temperature limit value and is preferably lower than a setpoint value for the temperature in this compartment.

Weitere Einzelheiten und Vorteile der Erfindung werden anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Die einzige Figur zeigt eine schematische Längsschnittdarstellung durch ein Kühlgerät gemäß der vorliegenden Erfindung sowie eine schematische Draufsicht auf ein Kaltlagerfach.Further details and advantages of the invention will be explained in more detail with reference to an embodiment shown in the drawing. The single figure shows a schematic longitudinal section through a cooling device according to the present invention and a schematic plan view of a cold storage compartment.

Figur 1 zeigt mit dem Bezugszeichen 100 in einer schematischen Längsschnittdarstellung ein erfindungsgemäßes Kühlgerät. Dieses weist einen Korpus auf, in dem sich ein oben angeordnetes Kühlteil 110 und ein darunter durch eine Trennplatte 300 abgetrenntes Kaltlagerfach 120 befinden. Das Kaltlagerfach 120 ist durch eine weitere horizontale Trennplatte 302 in einen oberen Bereich 122 und in einen unteren Bereich 124 unterteilt. FIG. 1 shows by the reference numeral 100 in a schematic longitudinal sectional view of an inventive cooling device. This has a body in which there are located a top cooling part 110 and a cold storage compartment 120 separated thereunder by a separating plate 300. The cold storage compartment 120 is divided by a further horizontal partition plate 302 into an upper area 122 and into a lower area 124.

Unterhalb der Trennplatte 300 befindet sich der Verdampfer 200, der Bestandteil eines aus Kompressor, Verflüssiger, Drosselkapillare und Verdampfer bestehenden Kältemittelkreislaufes ist.Below the partition plate 300 is the evaporator 200, which is part of a consisting of compressor, condenser, throttle capillary and evaporator refrigerant circuit.

Das Bezugszeichen 500 kennzeichnet einen Kaltluftkanal, der sich im rückwärtigen Bereich des Gerätes bzw. des Innenraumes befindet und von dem gekühlten Nutzraum durch eine vertikale Trennplatte abgetrennt ist. Mit dem Bezugszeichen 400 ist ein Ventilator gekennzeichnet, der die von dem Verdampfer 300 erzeugte Kaltluft in den Kühlluftkanal 500 führt. Wie dies in der Figur dargestellt ist, führt der Kühlluftkanal sowohl nach oben in das Kühlteil 110 als auch nach unten in das Kaltlagerfach 120.The reference numeral 500 denotes a cold air duct, which is located in the rear region of the device or the interior and is separated from the cooled working space by a vertical partition plate. Reference numeral 400 designates a fan, which leads the cold air generated by the evaporator 300 into the cooling air duct 500. As shown in the figure, the cooling air passage leads both upwards into the cooling part 110 and down into the cold storage compartment 120.

Mit dem Bezugszeichen K3 ist eine Luftklappe gekennzeichnet, die eine Öffnung 04 des Kaltluftkanals 500 öffnet oder schließt und durch die Kaltluft in den Kühlteil 110 des Gerätes eingeleitet werden kann, sofern die Klappe K3 geöffnet ist.By the reference numeral K3 is a damper that opens or closes an opening 04 of the cold air duct 500 and can be initiated by the cold air in the cooling part 110 of the device, provided that the flap K3 is open.

Der untere Teil des Kaltluftkanals 500 ist ebenfalls mit Öffnungen 01 und 03 versehen, die den Kaltluftkanal 500 mit dem Bereich 122 bzw. dem Bereich 124 des Kaltlagerfaches verbinden. Diese Öffnungen 01 und 03 sind durch Klappen K1 bzw. K2 verschließbar. Das Bezugszeichen 123 kennzeichnet die Rückwand des oberen Kaltlagerfaches 122.The lower part of the cold air duct 500 is likewise provided with openings 01 and 03 which connect the cold air duct 500 with the region 122 or the region 124 of the cold storage compartment. These openings 01 and 03 are closed by flaps K1 and K2. The reference numeral 123 denotes the rear wall of the upper cold storage compartment 122.

Wie dies aus der Detaildarstellung D in der Figur hervorgeht, die eine schematische Ansicht von vorne auf den Bereich 122 zeigt, ist dieser Bereich 122 in zwei nebeneinander liegende Fächer 122 a (1. Fach) und 122 b (2. Fach) unterteilt. Jedes dieser Fächer steht über eine Öffnung 01 bzw. 02 mit dem Kaltluftkanal in Verbindung. Wie dies aus der Detaildarstellung D hervorgeht, ist jedoch nur die Öffnung 01 durch eine Klappe K1 verschließbar, wohingegen die Öffnung 02 keine solche Klappe aufweist, das heißt immer offen steht.As can be seen from the detailed illustration D in the figure, which shows a schematic view of the area 122 from the front, this area 122 is subdivided into two adjacent compartments 122a (1st compartment) and 122b (2nd compartment). Each of these Fan is connected via an opening 01 or 02 with the cold air duct in connection. As can be seen from the detailed illustration D, however, only the opening 01 is closable by a flap K1, whereas the opening 02 has no such flap, that is always open.

Die beiden Fächer 122 a und 122 b sind durch eine in horizontaler Richtung verschiebbare Trennplatte T voneinander getrennt, so dass die Volumina der Fächer 122 a und 122 b verändert werden können. Wie ausgeführt, ist der Kaltlufteinlass für das rechts dargestellte zweite Fach 122 b stets offen, wohingegen der Kaltlufteinlass für das links dargestellte erste Fach 122 a durch eine Luftklappe K1 verschlossen werden kann.The two compartments 122 a and 122 b are separated by a displaceable in the horizontal direction partition plate T from each other, so that the volumes of the compartments 122 a and 122 b can be changed. As stated, the cold air inlet for the second compartment 122 b shown on the right is always open, whereas the cold air inlet for the first compartment 122 a shown on the left can be closed by an air flap K 1.

Die weitere Luftklappe K2 ist in der Luftführung zwischen den oberen und den unteren Kaltlagerfächer 122, 124 angeordnet. Beide Klappen K1 und K2 werden temperaturabhängig geöffnet oder geschlossen.The further air flap K2 is arranged in the air duct between the upper and the lower cold storage compartments 122, 124. Both flaps K1 and K2 are opened or closed depending on the temperature.

Durch eine Funktionsaktivierung durch eine Steuer- oder Regelungseinheit, die die Klappen K1 und K2 schließt oder deren freien Öffnungsquerschnitt drosselt, kann das zweite Fach 122 b des Kaltlagerfaches 122 mit Kaltluft beaufschlagt werden, wohingegen die weiteren Kaltlagerbereiche nicht mit Kaltluft beaufschlagt werden. Wird dieser Betriebsmodus deaktiviert, das heißt werden die Klappen K1 und K2 geöffnet, wird das Fach 122 b als normales Kaltlagerfach betrieben.By a function activation by a control or regulating unit which closes the flaps K1 and K2 or throttles the free opening cross-section, the second compartment 122 b of the cold storage compartment 122 can be acted upon with cold air, whereas the other cold storage areas are not subjected to cold air. If this mode of operation is disabled, that is, the flaps K1 and K2 are opened, the tray 122 b is operated as a normal cold storage compartment.

Denkbar ist es, dass im Auslieferungszustand die Funktion deaktiviert ist, das heißt die Klappen K1 und K2 geöffnet sind. Dies hat zur Folge, dass in allen Fächern 122 a, 122 b und 120 eine weitgehend gleichmäßige Temperatur, möglichst knapp unter 3 °C herrscht.It is conceivable that in the delivery state, the function is disabled, that is, the flaps K1 and K2 are open. This has the consequence that in all subjects 122 a, 122 b and 120 a largely uniform temperature, as close to 3 ° C as possible prevails.

Sollen nun in dem Kaltlagerfach 122 bzw. in den Fächern 122 a und 122 b unterschiedliche Temperaturen eingestellt werden, wird dieser Betriebsmodus aktiviert und beide Klappen K1 und K2 geschlossen oder deren Strömungsquerschnitt gedrosselt, was zur Folge hat, dass die Kühlung überwiegend durch den konstant offenen Lufteinlass 02 des rechten Teils 122 b des oberen Faches 122 erfolgt, wodurch dieser Bereich kälter wird als der restliche Kaltlagerfachbereich, das heißt kälter als die Fächer 122 a und 120. Dieser Betriebsmodus wird insbesondere dann eingeschaltet, wenn sich der Verdampfer 200 in seiner Abkühlphase befindet.If now different temperatures are to be set in the cold storage compartment 122 or in the compartments 122 a and 122 b, this operating mode is activated and both flaps K1 and K2 are closed or their flow cross-section throttled, with the result that the cooling is predominantly due to the constantly open Air inlet 02 of the right part 122 b of the upper compartment 122, whereby this area is colder than the remaining cold storage compartment area, that is colder than the compartments 122 a and 120. This mode of operation is particularly switched on when the evaporator 200 is in its cooling phase ,

Während des Abtauvorgangs werden, sobald die Verdampferoberflächentemperatur höher ist als die Innentemperatur in dem Kaltlagerbereich 120 oder 122 bzw. höher als in den Fächern 122 a oder 122 b die Luftklappen K1 und K2 geöffnet, damit die vergleichsweise warme Luft auch hier einströmen kann.During the defrosting process, as soon as the evaporator surface temperature is higher than the internal temperature in the cold storage area 120 or 122 or higher than in the compartments 122 a or 122 b, the louvers K1 and K2 are opened, so that the comparatively warm air can flow in here as well.

Nachdem Wiedereinschalten des Kompressors werden die beiden Luftklappen K1 und K2 geschlossen, sobald die Verdampferoberflächentemperatur geringer ist als die Kaltlagerfachtemperatur.After restarting the compressor, the two louvers K1 and K2 are closed as soon as the evaporator surface temperature is lower than the cold storage compartment temperature.

Vorzugsweise ist der Temperaturluftfühler im durch die untere Luftklappe K2 abgedrosselten Bereich positioniert, was zur Folge hat, dass der Regelbereich insgesamt in Richtung "kälter" verschoben wird.The temperature air sensor is preferably positioned in the area throttled by the lower air flap K2, with the result that the control area is shifted overall in the direction of "colder".

Im abgeschotteten Bereich, das heißt bei geschlossenen Klappen K1 und K2 herrscht in den Kompartimenten 120 und 122 a die übliche Kaltlagerfachtemperatur, während im nicht abgeschotteten Bereich, das heißt im zweiten Fach 122 b die Temperatur beispielsweise 2 - 3 K kälter ist.In the foreclosed area, that is with closed flaps K1 and K2 prevails in the compartments 120 and 122 a, the usual cold storage compartment temperature, while in the non-sealed area, that is, in the second compartment 122 b, the temperature, for example 2 - 3 K colder.

In dem hier dargestellten Ausführungsbeispiel ist der Verdampfer liegend, das heißt horizontal unterhalb einer Trennplatte eingebaut.In the embodiment shown here, the evaporator is lying, that is installed horizontally below a partition plate.

Denkbar ist es jedoch auch, der Verdampfer an anderer Stelle oder in anderer Orientierung, beispielsweise vertikal einzubauen. In diesem Fall erstreckt sich der Kaltluftkanal vorzugsweise ebenfalls im hinteren Bereich des gekühlten Innenraums. Der Kaltluftkanal weist in diesem Fall vorzugsweise eine obere und eine untere Öffnung auf, durch die einer Verbindung zwischen dem Kühlteil 110 und dem Kaltluftkanal bzw. zwischen dem Kaltlagerteil und dem Kaltluftkanal besteht.However, it is also conceivable to install the evaporator elsewhere or in a different orientation, for example vertically. In this case, the cold air duct preferably also extends in the rear region of the cooled interior. The cold air duct in this case preferably has an upper and a lower opening, through which there is a connection between the cooling part 110 and the cold air duct or between the cold storage part and the cold air duct.

In diesem Fall ist es beispielsweise denkbar, den Ventilator im Bereich der oberen Öffnung des Kaltluftkanals vorzusehen. Im Betrieb fördert der Ventilator dann die Kaltluft durch den Kaltluftkanal von oben nach unten und leitet die Luft in das unten befindliche Kaltlagerfach ein. Von dort strömt sie beispielsweise durch einen Bereich frontseitig zwischen einer horizontalen Trennplatte und der Tür nach oben in das Kühlfach und von dort zurück in den Kaltluftkanal.In this case, it is conceivable, for example, to provide the fan in the region of the upper opening of the cold air duct. During operation, the fan then conveys the cold air through the cold air duct from top to bottom and introduces the air into the cold storage compartment located below. From there it flows, for example, through an area at the front between a horizontal partition plate and the door upwards into the cooling compartment and from there back into the cold air duct.

Anstelle von Luftklappen können auch andere Mittel zur Einstellung des Volumenstroms der Kaltluft verwendet werden, wie beispielsweise Ventilatoren, die im Bereich der Öffnungen zwischen den Kompartimenten und dem Kaltluftkanal angeordnet sind.Instead of air dampers, other means for adjusting the volume flow of cold air can be used, such as fans, which are arranged in the region of the openings between the compartments and the cold air duct.

Wie oben ausgeführt, befindet sich in dem Kaltluftkanal eine Öffnung 04, die durch eine Klappe K3 drosselbar oder verschließbar ist. Durch diese Öffnung gelangt Kaltluft in den oberen Teil des Kaltluftkanals, der sich im rückwärtigen Bereich des Kühlteils befindet. Die Öffnung der Klappe K3 kann in Abhängigkeit von der Differenz zwischen einem gemessenen Istwert im Kühlteil 110 und einem Sollwert erfolgen.As stated above, there is an opening 04 in the cold air duct, which can be throttled or closed by a flap K3. Through this opening cold air enters the upper part of the cold air duct, which is located in the rear area of the cooling part. The opening of the flap K3 can be effected as a function of the difference between a measured actual value in the cooling part 110 and a desired value.

Durch die in ihrer Position verstellbare Trennplatte T ist es möglich, die bei unterschiedlichen Temperaturen betreibbaren Kaltlager-Bereiche 122 a und 122 b in ihrer Größe zu verändern und damit an die individuellen Bedürfnisse eines Nutzers anpassen zu können.By adjustable in position separator plate T, it is possible to operate the operable at different temperatures cold storage areas 122 a and 122 b in size and thus to be able to adapt to the individual needs of a user.

Claims (8)

  1. A refrigerator unit and/or freezer unit (100) having a cooled inner space (110, 120) in which a cold storage compartment (120) is located, wherein the unit (100) comprises:
    a cold air passage (500); and
    an evaporator (200) for generating cold air in the cold air passage (500); and wherein
    the cold air passage (500) is connected to the cold storage compartment (120) via an opening (O1, O2) so that cold air can flow out of the cold air passage (500) into the cold storage compartment (120);
    the cold storage compartment (120) is divided into a first compartment (122a) and into a second compartment (122b) by means of a separating means (T);
    the first compartment (122a) is connected to the cold air passage (500) via a first opening (O1) and the second compartment (122b) is connected to said cold air passage (500) via a second opening (O2); and
    a means (K1) for varying the cold air volume flow flowing through the opening (O1, O2) is present that is configured or settable such that the cold air volume flow through the first opening (O1) differs from the cold air volume flow through the second opening (O2) in an operating state of the unit (100),
    characterized in that
    the separating means (T) is variably arrangeable in its position and
    the means (K1) for varying the cold air volume flow is present in the first opening (O1) or in the second opening (O2), is configured in the form of one or more flaps and/or fans, and is only present in one of the openings (O1, O2).
  2. A refrigerator unit and/or freezer unit (100) in accordance with claim 1, characterized in that the two compartments (122a, 122b) are arranged next to one another or above one another.
  3. A refrigerator unit and/or freezer unit (100) in accordance with one of the preceding claims, characterized in that the separating means (T) is a separating wall (T) that is fixable at different positions or that is displaceably arranged.
  4. A refrigerator unit and/or freezer unit (100) in accordance with one of the preceding claims, characterized in that a further cold storage compartment (124) that is connected to the cold air passage (500) via a further opening (O3) is arranged next to or beneath or above the first compartment (122a) and the second compartment (122b), with provision preferably being made that a further means (K2) for varying the cold air volume flow through the further opening (O3) is present in said further opening (O3).
  5. A method of operating a refrigerator unit and/or freezer unit (100), characterized in that a refrigerator unit and/or freezer unit (100) in accordance with claim 1 to claim 4 is provided; and in that at least one temperature sensor and at least one control or regulation unit is provided that is connected to the temperature sensor, with the control or regulation unit controlling the adjustment of the means (K1, K2) for varying the cold air volume flow in dependence on a difference between the actual value measured on the part of the temperature sensor and a desired value.
  6. A method in accordance with claim 5, characterized in that the cold air is exclusively or predominantly introduced into the first compartment or into the second compartment (122b) by setting the means for varying the cold air volume flow in normal operation of the unit, in particular in the cool-down phase of the evaporator (200).
  7. A method in accordance with claim 5 or claim 6, characterized in that the cold air is introduced into the first compartment (122a) and into the second compartment (122b), and preferably into all the cold storage compartments in the defrost phase of the unit by setting the means for varying the cold air volume flow as soon as the evaporator temperature exceeds a temperature limit value and preferably exceeds the temperature measured in one of the compartments (122a, 122b, 124).
  8. A method in accordance with claim 7, characterized in that the supply of cold air into at least one of the compartments (122a, 122b, 124) is suppressed when the evaporator temperature is lower than a temperature limit value and is preferably lower than a desired value for the temperature in this compartment (122a, 122b, 124).
EP15151300.9A 2014-01-17 2015-01-15 Refrigeration and/or freezer device Active EP2896916B1 (en)

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DE202005005940U1 (en) * 2005-04-13 2006-08-24 Liebherr-Hausgeräte Ochsenhausen GmbH A method for adjusting the flow of refrigerated air in a domestic refrigeration appliance has an air distribution duct with outlets in each compartment which may be closed independently
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KR101639436B1 (en) * 2009-10-30 2016-07-13 엘지전자 주식회사 Refrigerator

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EP2789937A1 (en) * 2013-04-09 2014-10-15 Whirlpool Corporation Refrigerator comprising a convertible compartment and method for adjusting temperature therein

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