EP1508006B1 - Refrigeration device and ice preparation unit therefor - Google Patents

Refrigeration device and ice preparation unit therefor Download PDF

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Publication number
EP1508006B1
EP1508006B1 EP03752666A EP03752666A EP1508006B1 EP 1508006 B1 EP1508006 B1 EP 1508006B1 EP 03752666 A EP03752666 A EP 03752666A EP 03752666 A EP03752666 A EP 03752666A EP 1508006 B1 EP1508006 B1 EP 1508006B1
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EP
European Patent Office
Prior art keywords
heat exchanger
refrigerating appliance
refrigerant
icemaker
cooling zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03752666A
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German (de)
French (fr)
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EP1508006A1 (en
Inventor
Klaus Flinner
Georg Hausmann
Stefan Holzer
Jörg STELZER
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/025—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures using primary and secondary refrigeration systems
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/04—Producing ice by using stationary moulds
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/22—Construction of moulds; Filling devices for moulds
    • F25C1/24—Construction of moulds; Filling devices for moulds for refrigerators, e.g. freezing trays
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2400/00—Auxiliary features or devices for producing, working or handling ice
    • F25C2400/10—Refrigerator units

Definitions

  • the present invention relates to a refrigerator with an icemaker according to the preamble of claim 1.
  • a refrigerator is for example from the US-A-2 435 102 known.
  • icemaker for a refrigeration device is a water-fillable pan, subdivided into a plurality of chambers, which can be placed in the freezer compartment of a refrigerator to freeze water therein.
  • the freezing process takes a long time, since cooling of the shell by contact with the evaporator of the freezer compartment is possible only at the bottom of the shell, provided that the evaporator itself forms the bottom of the freezer compartment.
  • the evaporator is generally arranged on the rear wall of the freezer, so that the cooling of the shell takes place substantially only indirectly via air circulating in the freezer compartment and takes even longer time.
  • An unforeseen need for ice cream can not be met in the short term with this simple icemaker.
  • refrigerators In order to accelerate the ice making, refrigerators have been proposed in which an icemaker is connected to the refrigerant circuit of the refrigerator and supplied by this with refrigerant. Although this solution is very efficient, but also technically complex and therefore expensive, so that it is more suitable for commercial than for private use.
  • Object of the present invention is to provide a equipped with an icemaker refrigeration device that allows fast ice making and yet is inexpensive to implement.
  • An essential feature of the icemaker according to the invention is the separation of its refrigerant circuit from that of a refrigeration device to which the icemaker is applicable.
  • the refrigerant circuit of the ice maker according to the invention is self-contained; it contains its own, separate from that of the refrigerator refrigerant. This simplifies the installation of the ice maker in a refrigeration appliance considerably, since at most a small refrigeration unit on the conventional refrigeration unit are required to install the icemaker and passages between the refrigerant circuits of the refrigerator and icemaker are not required.
  • the necessary for generating ice cooling of the ice maker can be done simply by heat exchange at the second heat exchanger, which is arranged in a cooling zone of the refrigerator, which reaches temperatures below 0 ° C.
  • the second heat exchanger which is arranged in a cooling zone of the refrigerator, which reaches temperatures below 0 ° C.
  • the refrigerant of the icemaker does not have to be operated in a thermodynamic cycle, it can be advantageously selected so that it remains liquid in the entire refrigerant circuit under normal operating conditions of the icemaker.
  • larger amounts of heat than with a gaseous refrigerant can be transported at a relatively low volume flow rate of the refrigerant circuit.
  • the second heat exchanger is preferably designed as a reservoir for the refrigerant, i. its volume is greater than would be required from the standpoint of efficient heat exchange when the refrigerant flows through. Thereby, it is possible to stockpile a large amount of cold refrigerant in the second heat exchanger as long as the icemaker is not used. When it is put into operation, however, immediately a large amount of cooled refrigerant is available.
  • the ice maker is preferably provided with a pump.
  • This may advantageously be associated with a timing device for controlling the operation of the pump.
  • This allows automatic shut-off of the pump after a sufficient time to freeze the filled water. This ensures that the cooling zone of the refrigerator, in which housed the second heat exchanger is not constantly supplied via this heat, if this is no longer necessary for freezing the water in the ice container.
  • the shutdown of the pump allows a superficial Antauen the finished ice in the ice container, which simplifies its removal from the ice container.
  • the refrigerator according to the invention has at least a first and a second cooling zone, which are stable at different temperatures, and the ice container is arranged in the first and the second heat exchanger in the second cooling zone.
  • the icemaker When the icemaker is operated, so contribute to the cooling of the first container or the associated first heat exchanger for cooling the first cooling zone, while the second cooling zone is heated by the second heat exchanger. While the demand of the second cooling zone increases in cooling capacity as a result of the operation of the ice maker, that of the first cooling zone decreases accordingly, so that the overall cooling power requirement of the refrigeration appliance is not appreciably influenced by the operation of the ice maker.
  • a space-saving accommodation of the second heat exchanger is possible in particular on the ceiling or at the bottom of the second cooling zone.
  • the second heat exchanger preferably extends substantially over the entire width and / or depth of the second cooling zone.
  • the ice maker of the refrigeration device is installed and removed. So when not in use of the ice maker otherwise occupied by him space for other refrigerated goods can be used.
  • a connector for the power supply of the pump is preferably arranged on an inner wall of a cooling zone.
  • the refrigerant circuit between the first and the second heat exchanger is at least partially formed by flexible hoses. This makes it possible, on the one hand, to position the ice container in the first cooling zone at changing points which are not currently occupied bymégüt; on the other hand, through the Hoses reached mobility of the ice container with respect to the second heat exchanger to store the icemaker in a dismantled state to save space.
  • Fig. 1 shows a schematic front view of a refrigerator with an icemaker according to the present invention.
  • the refrigeration device has two cooling zones, a refrigerating compartment or fresh cooling compartment 1 in the upper region of the device, which is kept at temperatures above 0 ° C in normal operation of the refrigerator, and a freezer 2 in the lower region, which in normal operation to temperatures below 0 ° C. is held.
  • the two compartments 1, 2 are closed by a common or preferably each individually by separate doors, which are not shown in the figure.
  • An ice maker mounted in the refrigerator substantially comprises two assemblies 3, 4 which are arranged in the refrigerating compartment 1 and the freezer compartment 2, respectively.
  • the first assembly 3 comprises a first heat exchanger and an ice container and is in Fig. 2 shown in detail;
  • the second assembly comprises a pump and a second heat exchanger and is in Fig. 3 shown in detail.
  • the two assemblies are interconnected by refrigerant lines 5, 6.
  • the refrigerant lines 5, 6 extend freely over the front edge of a horizontal partition 7, the two compartments 1, 2 against each other demarcates. If every subject 1 and 2 is equipped with its own door, as can be seen in Fig.
  • a cutout 8 may be formed, in which a closure body 9 is inserted such that complementary semi-cylindrical recesses 10 at the edges of the cutout 8 and the closure body 9 together passages for the refrigerant lines 5, 6 limit, and at the same time the front edge 11 of the closure body 9 is flush with the partition 7.
  • Fig. 2 shows a possible embodiment of the first assembly 3 of the ice maker.
  • the first heat exchanger 12 of the assembly 3 is here designed as a hollow body made of metal or plastic, with two connecting pieces 13 for the refrigerant lines 5, 6 on a side wall of the heat exchanger and a plurality of compartments or recesses 14 on an upper side of the heat exchanger.
  • the front side wall of the first heat exchanger 12 is shown partially cut away to show partitions 15 which are disposed in the interior of the heat exchanger and force the heat transfer fluid flowing through them onto a meandering path which brushes the bottoms and side walls of all recesses 14.
  • the entirety of the depressions 14 could already form the ice container.
  • a thin-walled shell 16 with a plurality of recesses 17 is provided as an ice container, which are dimensioned to engage positively in the recesses 14 of the first heat exchanger 12.
  • the ice container 16 can be removed after freezing of water in its recesses 17, without at the same time the first heat exchanger 12 must be removed.
  • Fig. 3 shows a plan view of a possible embodiment of the second heat exchanger 18 of the ice maker. This is composed of two flat plastic half-shells which are welded together along their edges as well as along a plurality of lines 20 to define a meandering flow path for the refrigerant.
  • the volume of the second heat exchanger 18 is of a similar order of magnitude as that of the ice container 16. This makes it possible, at least at the beginning of an ice-making operation, to cool the water in the ice container 16 with a considerably higher power than the power exchanged at the second heat exchanger 18.
  • An electrically driven pump 21 for the refrigerant is attached to the second heat exchanger 18 and has two connecting pieces 22, 23, one of which 22 is provided for connection to one of the refrigerant lines 5, 6 and the other 23 opens into the second heat exchanger 18.
  • Another connecting piece 24 for connecting to one of the refrigerant lines 5, 6 is arranged on the upper half-shell of the second heat exchanger 18.
  • An electrical supply cable 25 of the pump carries a plug 26.
  • a socket, not shown, complementary to the plug 26 for the power supply of the pump 21 is disposed on the inner wall of the freezer compartment 2.
  • a control circuit not shown in the figure is attached to the pump 21. It is designed to supply power to the pump 21 for a period of time when a user depresses a switch, the length of which is selected to be sufficient to freeze water filled in the ice container 16. After expiration of the period of time, the control circuit turns off the pump 21.
  • the ice in the ice container now begins to thaw slowly, which is quite desirable, since the pieces of ice formed in the individual wells 17 of the ice container 16 are easier to remove when they are thawed on the surface.
  • control circuit after the lapse of time, the pump 21 intermittently energized, the duration of the switch-on of the pump is selected in the intermittent operation so that thawing of the ice is avoided over a long period of time.
  • the edge lengths of the substantially rectangular second heat exchanger 18 correspond substantially to the width and depth of the freezer compartment 2, so that the second heat exchanger 18 can be easily placed by placing projections or engagement formed on the side walls of the freezer compartment into rails disposed on these walls ,
  • the second heat exchanger 18 can hang loosely on an etager 27, which is arranged at a small distance of a few centimeters from the ceiling of the freezer compartment 2.
  • This variant is particularly useful when the icemaker is mounted and dismounted by a user in the refrigerator because the etagere 27, if it does not carry the second heat exchanger 18, then usable as a carrier for cooling batteries or the like.
  • a refrigerant for the ice maker is particularly an alcohol or alcohol mixture or an alcohol-water mixture into consideration.
  • the pump and possibly its control circuit can of course also be contained in the first module.
  • freezer compartment 2 can also be arranged at the top of the refrigerator and the normal or fresh refrigerator compartment 1 below; In this case, installation space for the second heat exchanger at the bottom of the freezer compartment 2 is provided.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Production, Working, Storing, Or Distribution Of Ice (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

An icemaker for a refrigeration device contains a refrigerant circuit and an ice container that is located in a subassembly housed in a refrigeration compartment of the refrigeration device. The ice container is in thermal contact with the refrigerant circuit by a first heat exchanger. A second sub-assembly that is located in a freezer compartment of the refrigeration device contains a second heat exchanger of the refrigerant circuit. Water in the ice container is cooled by the dissipation of heat from the second heat exchanger to the freezer compartment.

Description

Die vorliegende Erfindung betrifft ein Kältegerät mit einem Eisbereiter gemäß dem Oberbegriff des Anspruchs 1. Ein solches Kältegerät ist z.B. aus der US-A-2 435 102 bekannt.The present invention relates to a refrigerator with an icemaker according to the preamble of claim 1. Such a refrigerator is for example from the US-A-2 435 102 known.

Die einfachste Form eines Eisbereiters für ein Kältegerät ist eine mit Wasser befüllbare, in eine Mehrzahl von Kammern unterteilte Schale, die in das Gefrierfach eines Kältegeräts gestellt werden kann, um darin befindliches Wasser zu gefrieren.The simplest form of icemaker for a refrigeration device is a water-fillable pan, subdivided into a plurality of chambers, which can be placed in the freezer compartment of a refrigerator to freeze water therein.

Der Gefriervorgang nimmt lange Zeit in Anspruch, da eine Kühlung der Schale durch Kontakt mit dem Verdampfer des Gefrierfachs nur am Boden der Schale möglich ist, sofern der Verdampfer selbst den Boden des Gefrierfachs bildet. Bei modernen Kältegeräten ist der Verdampfer im allgemeinen an der Rückwand des Gefrierfachs angeordnet, so dass die Kühlung der Schale im wesentlichen nur mittelbar über im Gefrierfach zirkulierende Luft erfolgt und noch längere Zeit in Anspruch nimmt. Ein unvorhergesehener Bedarf nach Eis kann mit diesem einfachen Eisbereiter nicht kurzfristig befriedigt werden.The freezing process takes a long time, since cooling of the shell by contact with the evaporator of the freezer compartment is possible only at the bottom of the shell, provided that the evaporator itself forms the bottom of the freezer compartment. In modern refrigerators, the evaporator is generally arranged on the rear wall of the freezer, so that the cooling of the shell takes place substantially only indirectly via air circulating in the freezer compartment and takes even longer time. An unforeseen need for ice cream can not be met in the short term with this simple icemaker.

Um die Eisbereitung zu beschleunigen, sind Kältegeräte vorgeschlagen worden, bei denen ein Eisbereiter an den Kältemittelkreislauf des Kältegerätes angeschlossen und von diesem mit Kältemittel versorgt ist. Diese Lösung ist zwar sehr effizient, aber auch technisch aufwendig und dementsprechend kostspielig, so dass sie sich eher für den kommerziellen als für den privaten Einsatz eignet.In order to accelerate the ice making, refrigerators have been proposed in which an icemaker is connected to the refrigerant circuit of the refrigerator and supplied by this with refrigerant. Although this solution is very efficient, but also technically complex and therefore expensive, so that it is more suitable for commercial than for private use.

Aufgabe der vorliegenden Erfindung ist, ein mit einem Eisbereiter ausgestattetes Kältegerät anzugeben, die eine schnelle Eisbereitung ermöglicht und dennoch preiswert realisierbar ist.Object of the present invention is to provide a equipped with an icemaker refrigeration device that allows fast ice making and yet is inexpensive to implement.

Die Aufgabe wird gelöst durch ein Kältegerät mit den Merkmalen des Anspruchs 1.The object is achieved by a refrigeration device having the features of claim 1.

Ein wesentliches Merkmal des erfindungsgemäßen Eisbereiters ist die Trennung seines Kältemittelkreises von dem eines Kältegeräts, an dem der Eisbereiters anwendbar ist. Mit anderen Worten ist der Kältemittelkreis des erfindungsgemäßen Eisbereiters in sich geschlossen; er enthält sein eigenes, von dem des Kältegeräts getrenntes Kältemittel. Dies vereinfacht den Einbau des Eisbereiters in einem Kältegerät erheblich, da an einem herkömmlichen Kältegerät allenfalls geringe Anpassungen am Kältegerät erforderlich sind, um den Eisbereiter einbauen zu können und Durchgänge zwischen den Kältemittelkreisen von Kältegerät und Eisbereiter nicht benötigt werden.An essential feature of the icemaker according to the invention is the separation of its refrigerant circuit from that of a refrigeration device to which the icemaker is applicable. In other words, the refrigerant circuit of the ice maker according to the invention is self-contained; it contains its own, separate from that of the refrigerator refrigerant. This simplifies the installation of the ice maker in a refrigeration appliance considerably, since at most a small refrigeration unit on the conventional refrigeration unit are required to install the icemaker and passages between the refrigerant circuits of the refrigerator and icemaker are not required.

Die zum Erzeugen von Eis erforderliche Kühlung des Eisbereiters kann einfach durch Wärmeaustausch am zweiten Wärmetauscher erfolgen, der in einer Kühlzone des Kältegeräts angeordnet ist, die Temperaturen unter 0°C erreicht. So ist es möglich, das im Kältemittelkreis des Eisbereiters zirkulierende Kältemittel so weit abzukühlen, dass es in der Lage ist, über den ersten Wärmetauscher Wasser im Eisbehälter zu gefrieren, ohne dass der Eisbereiter über eine eigene Kältemaschine verfügen muss. Daher kann der erfindungsgemäße Eisbereiter preiswert hergestellt werden.The necessary for generating ice cooling of the ice maker can be done simply by heat exchange at the second heat exchanger, which is arranged in a cooling zone of the refrigerator, which reaches temperatures below 0 ° C. Thus, it is possible to cool the circulating in the refrigerant circuit of the icemaker refrigerant so far that it is able to freeze over the first heat exchanger water in the ice container without the icemaker must have its own chiller. Therefore, the ice maker according to the invention can be manufactured inexpensively.

Da somit das Kältemittel des Eisbereiters nicht in einem thermodynamischen Kreisprozess betrieben werden muss, kann es vorteilhafterweise so ausgewählt werden, dass es unter normalen Betriebsbedingungen des Eisbereiters im gesamten Kältemittelkreis flüssig bleibt. So können bei vergleichsweise geringem Volumendurchsatz des Kältemittelkreises größere Wärmemengen als mit einem gasförmigen Kältemittel transportiert werden.Thus, since the refrigerant of the icemaker does not have to be operated in a thermodynamic cycle, it can be advantageously selected so that it remains liquid in the entire refrigerant circuit under normal operating conditions of the icemaker. Thus, larger amounts of heat than with a gaseous refrigerant can be transported at a relatively low volume flow rate of the refrigerant circuit.

Der zweite Wärmetauscher ist vorzugsweise als Reservoir für das Kältemittel ausgelegt, d.h. sein Volumen ist größer, als unter dem Gesichtspunkt eines effizienten Wärmeaustauschs bei Durchfluss des Kältemittels erforderlich wäre. Dadurch ist es möglich, eine große Menge an kaltem Kältemittel in dem zweiten Wärmetauscher zu bevorraten, solange der Eisbereiter nicht genutzt wird. Wenn er in Betrieb genommen wird, steht hingegen sofort eine große Menge an abgekühltem Kältemittel zur Verfügung.The second heat exchanger is preferably designed as a reservoir for the refrigerant, i. its volume is greater than would be required from the standpoint of efficient heat exchange when the refrigerant flows through. Thereby, it is possible to stockpile a large amount of cold refrigerant in the second heat exchanger as long as the icemaker is not used. When it is put into operation, however, immediately a large amount of cooled refrigerant is available.

Zum Umwälzen des Kältemittels ist der Eisbereiter vorzugsweise mit einer Pumpe versehen. Dieser kann vorteilhafterweise eine Zeitschaltvorrichtung zum Steuern des Betriebs der Pumpe zugeordnet sein. Diese ermöglicht, nachdem der Eisbereiter von einem Benutzer in Gang gesetzt worden ist, nach einer voraussichtlich zum Gefrieren des eingefüllten Wassers ausreichenden Zeitspanne ein automatisches Ausschalten der Pumpe. So ist sichergestellt, dass der Kühlzone des Kältegeräts, in der der zweite Wärmetauscher untergebracht ist, nicht ständig über diesen Wärme zugeführt wird, wenn dies zum Gefrieren des Wassers im Eisbehälter nicht mehr erforderlich ist. Außerdem ermöglicht das Abschalten der Pumpe ein oberflächliches Antauen des fertigen Eises im Eisbehälter, was seine Entnahme aus dem Eisbehälter vereinfacht.For circulating the refrigerant, the ice maker is preferably provided with a pump. This may advantageously be associated with a timing device for controlling the operation of the pump. This, after the icemaker has been actuated by a user, allows automatic shut-off of the pump after a sufficient time to freeze the filled water. This ensures that the cooling zone of the refrigerator, in which housed the second heat exchanger is not constantly supplied via this heat, if this is no longer necessary for freezing the water in the ice container. In addition, the shutdown of the pump allows a superficial Antauen the finished ice in the ice container, which simplifies its removal from the ice container.

Das erfindungsgemäße Kältegerät hat wenigstens eine erste und eine zweite Kühlzone, die auf verschiedenen Temperaturen haltbar sind, und der Eisbehälter ist in der ersten und der zweite Wärmetauscher in der zweiten Kühlzone angeordnet. Wenn der Eisbereiter betrieben wird, tragen so der Eisbehälter bzw. der mit ihm verbundene erste Wärmetauscher zur Kühlung der ersten Kühlzone bei, während die zweite Kühlzone durch den zweiten Wärmetauscher erwärmt wird. Während durch den Betrieb des Eisbereiters der Bedarf der zweiten Kühlzone an Kühlleistung zunimmt, nimmt der der ersten Kühlzone entsprechend ab, so dass der Gesamtkühlleistungsbedarf des Kältegeräts durch den Betrieb des Eisbereiters nicht nennenswert beeinflusst wird.The refrigerator according to the invention has at least a first and a second cooling zone, which are stable at different temperatures, and the ice container is arranged in the first and the second heat exchanger in the second cooling zone. When the icemaker is operated, so contribute to the cooling of the first container or the associated first heat exchanger for cooling the first cooling zone, while the second cooling zone is heated by the second heat exchanger. While the demand of the second cooling zone increases in cooling capacity as a result of the operation of the ice maker, that of the first cooling zone decreases accordingly, so that the overall cooling power requirement of the refrigeration appliance is not appreciably influenced by the operation of the ice maker.

Eine platzsparende Unterbringung des zweiten Wärmetauschers ist insbesondere an der Decke oder am Boden der zweiten Kühlzone möglich.A space-saving accommodation of the second heat exchanger is possible in particular on the ceiling or at the bottom of the second cooling zone.

Um eine große Wärmeaustauschoberfläche zu erreichen, erstreckt sich der zweite Wärmetauscher vorzugsweise im wesentlichen über die gesamte Breite und/oder Tiefe der zweiten Kühlzone.In order to achieve a large heat exchange surface, the second heat exchanger preferably extends substantially over the entire width and / or depth of the second cooling zone.

Vorteilhafterweise ist der Eisbereiter des Kältegerätes ein- und ausbaubar. So kann bei Nichtgebrauch des Eisbereiters ansonsten von ihm belegter Platz für andere Kühlgüter nutzbar gemacht werden.Advantageously, the ice maker of the refrigeration device is installed and removed. So when not in use of the ice maker otherwise occupied by him space for other refrigerated goods can be used.

Um den Ein- und Ausbau zu erleichtern, ist vorzugsweise an einer Innenwand einer Kühlzone ein Steckverbinder für die Stromversorgung der Pumpe angeordnet.In order to facilitate the installation and removal, a connector for the power supply of the pump is preferably arranged on an inner wall of a cooling zone.

Sinnvoll ist auch, dass der Kältemittelkreis zwischen dem ersten und dem zweiten Wärmetauscher wenigstens teilweise durch flexible Schläuche gebildet ist. Dies macht es zum einen möglich, den Eisbehälter in der ersten Kühlzone an wechselnden Stellen zu positionieren, die gerade nicht von Kühlgüt belegt sind; zum anderen ermöglicht die durch die Schläuche erreichte Beweglichkeit des Eisbehälters in Bezug auf den zweiten Wärmetauscher, den Eisbereiter in ausgebautem Zustand platzsparend zu lagern.It is also meaningful that the refrigerant circuit between the first and the second heat exchanger is at least partially formed by flexible hoses. This makes it possible, on the one hand, to position the ice container in the first cooling zone at changing points which are not currently occupied by Kühlgüt; on the other hand, through the Hoses reached mobility of the ice container with respect to the second heat exchanger to store the icemaker in a dismantled state to save space.

Weitere Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels mit Bezug auf die beigefügten Figuren. Es zeigen:

Fig. 1
ein erfindungsgemäßes Kältegerät mit zwei durch eine Trennwand voneinander getrennten Kältefächern unterschiedlicher Temperatur, dargestellt ohne Tür, in schematischer Ansicht von vorne;
Fig. 2
eine perspektivische Ansicht eines ersten Wärmetauschers und eines Eisbehälters des erfindungsgemäßen Eisbereiters;
Fig. 3
eine Draufsicht auf den zweiten Wärmetauscher des Eisbereiters und
Fig. 4
ausschnittsweise die Trennwand in ihrem türnahen Bereich.
Further advantages of the invention will become apparent from the following description of an embodiment with reference to the accompanying figures. Show it:
Fig. 1
an inventive refrigerator with two separated by a partition cold compartments of different temperature, shown without door, in a schematic view from the front;
Fig. 2
a perspective view of a first heat exchanger and an ice container of the ice maker according to the invention;
Fig. 3
a plan view of the second heat exchanger of the ice maker and
Fig. 4
partial, the partition in its door-near area.

Fig. 1 zeigt eine schematisierte Vorderansicht eines Kältegeräts mit einem Eisbereiter gemäß der vorliegenden Erfindung. Das Kältegerät weist zwei Kühlzonen, ein Kühlfach oder Frischkühlfach 1 im oberen Bereich des Geräts, das im Normalbetrieb des Kältegeräts auf Temperaturen oberhalb von 0°C gehalten wird, und ein Gefrierfach 2 im unteren Bereich auf, das im Normalbetrieb auf Temperaturen unterhalb 0°C gehalten wird. Die zwei Fächer 1, 2 sind durch eine gemeinsame oder vorzugsweise jeweils einzeln durch getrennte Türen verschließbar, die in der Fig. nicht dargestellt sind. Fig. 1 shows a schematic front view of a refrigerator with an icemaker according to the present invention. The refrigeration device has two cooling zones, a refrigerating compartment or fresh cooling compartment 1 in the upper region of the device, which is kept at temperatures above 0 ° C in normal operation of the refrigerator, and a freezer 2 in the lower region, which in normal operation to temperatures below 0 ° C. is held. The two compartments 1, 2 are closed by a common or preferably each individually by separate doors, which are not shown in the figure.

Ein in dem Kältegerät montierter Eisbereiter umfasst im wesentlichen zwei Baugruppen 3, 4 die im Kühlfach 1 bzw. dem Gefrierfach 2 angeordnet sind. Die erste Baugruppe 3 umfasst einen ersten Wärmetauscher und einen Eisbehälter und ist in Fig. 2 im Detail dargestellt; die zweite Baugruppe umfasst eine Pumpe und einen zweiten Wärmetauscher und ist in Fig. 3 im Detail dargestellt. Die zwei Baugruppen sind durch Kältemittelleitungen 5, 6 miteinander verbunden. Bei einem Kältegerät mit einer einzigen Tür für beide Fächer 1, 2, bei dem die Fächer nicht notwendigerweise luftdicht voneinander abgegrenzt sind, können die Kältemittelleitungen 5, 6 sich frei über die Vorderkante einer horizontalen Trennwand 7 erstrecken, die die beiden Fächer 1, 2 gegeneinander abgrenzt. Wenn jedes Fach 1 und 2 mit einer eigenen Tür ausgestattet ist, kann, wie in Fig. 4 dargestellt, an der Vorderkante der Trennwand 7 ein Ausschnitt 8 gebildet sein, in den ein Verschlusskörper 9 derart einsteckbar ist, dass komplementäre halbzylindrische Einbuchtungen 10 an den Rändern des Ausschnitts 8 bzw. des Verschlusskörpers 9 zusammen Durchgänge für die Kältemittelleitungen 5, 6 begrenzen, und gleichzeitig der vordere Rand 11 des Verschlusskörpers 9 mit dem der Trennwand 7 bündig abschließt.An ice maker mounted in the refrigerator substantially comprises two assemblies 3, 4 which are arranged in the refrigerating compartment 1 and the freezer compartment 2, respectively. The first assembly 3 comprises a first heat exchanger and an ice container and is in Fig. 2 shown in detail; the second assembly comprises a pump and a second heat exchanger and is in Fig. 3 shown in detail. The two assemblies are interconnected by refrigerant lines 5, 6. In a refrigerator with a single door for both compartments 1, 2, in which the compartments are not necessarily airtight delimited from each other, the refrigerant lines 5, 6 extend freely over the front edge of a horizontal partition 7, the two compartments 1, 2 against each other demarcates. If every subject 1 and 2 is equipped with its own door, as can be seen in Fig. 4 represented, at the front edge of the partition 7, a cutout 8 may be formed, in which a closure body 9 is inserted such that complementary semi-cylindrical recesses 10 at the edges of the cutout 8 and the closure body 9 together passages for the refrigerant lines 5, 6 limit, and at the same time the front edge 11 of the closure body 9 is flush with the partition 7.

Fig. 2 zeigt eine mögliche Ausgestaltung der ersten Baugruppe 3 des Eisbereiters. Der erste Wärmetauscher 12 der Baugruppe 3 ist hier als Hohlkörper aus Metall oder Kunststoff ausgebildet, mit zwei Anschlussstutzen 13 für die Kältemittelleitungen 5, 6 an einer Seitenwand des Wärmetauschers und einer Vielzahl von Fächern oder Vertiefungen 14 an einer Oberseite des Wärmetauschers. Die vordere Seitenwand des ersten Wärmetauschers 12 ist teilweise aufgeschnitten dargestellt, um Trennwände 15 zu zeigen, die im Inneren des Wärmetauschers angeordnet sind und die diesen durchströmende Wärmeträgerflüssigkeit auf eine mäanderförmige Bahn zwingen, die die Böden und Seitenwände aller Vertiefungen 14 streift. Fig. 2 shows a possible embodiment of the first assembly 3 of the ice maker. The first heat exchanger 12 of the assembly 3 is here designed as a hollow body made of metal or plastic, with two connecting pieces 13 for the refrigerant lines 5, 6 on a side wall of the heat exchanger and a plurality of compartments or recesses 14 on an upper side of the heat exchanger. The front side wall of the first heat exchanger 12 is shown partially cut away to show partitions 15 which are disposed in the interior of the heat exchanger and force the heat transfer fluid flowing through them onto a meandering path which brushes the bottoms and side walls of all recesses 14.

Bei einer einfachen Ausgestaltung könnte bereits die Gesamtheit der Vertiefungen 14 den Eisbehälter bilden. Bei der hier betrachteten Ausgestaltung ist als Eisbehälter jedoch eine dünnwandige Schale 16 mit einer Vielzahl von Vertiefungen 17 vorgesehen, die bemessen sind, um formschlüssig in die Vertiefungen 14 des ersten Wärmetauschers 12 einzugreifen. So kann der Eisbehälter 16 nach dem Gefrieren von Wasser in seinen Vertiefungen 17 entnommen werden, ohne dass gleichzeitig der erste Wärmetauscher 12 entfernt werden muss.In a simple embodiment, the entirety of the depressions 14 could already form the ice container. In the embodiment considered here, however, a thin-walled shell 16 with a plurality of recesses 17 is provided as an ice container, which are dimensioned to engage positively in the recesses 14 of the first heat exchanger 12. Thus, the ice container 16 can be removed after freezing of water in its recesses 17, without at the same time the first heat exchanger 12 must be removed.

Fig. 3 zeigt eine Draufsicht auf eine mögliche Ausgestaltung des zweiten Wärmetauschers 18 des Eisbereiters. Dieser ist aufgebaut aus zwei flachen Kunststoffhalbschalen, die entlang ihrer Ränder sowie entlang einer Mehrzahl von Linien 20 miteinander verschweißt sind, um einen mäanderartigen Strömungsweg für das Kältemittel zu definieren. Fig. 3 shows a plan view of a possible embodiment of the second heat exchanger 18 of the ice maker. This is composed of two flat plastic half-shells which are welded together along their edges as well as along a plurality of lines 20 to define a meandering flow path for the refrigerant.

Das Volumen des zweiten Wärmetauschers 18 liegt in einer ähnlichen Größenordnung wie das des Eisbehälters 16. Dadurch ist es zumindest zu Beginn eines Eisbereitungsvorgangs möglich, das Wasser im Eisbehälter 16 mit einer erheblich höheren Leistung als der am zweiten Wärmetauscher 18 ausgetauschten Leistung zu kühlen.The volume of the second heat exchanger 18 is of a similar order of magnitude as that of the ice container 16. This makes it possible, at least at the beginning of an ice-making operation, to cool the water in the ice container 16 with a considerably higher power than the power exchanged at the second heat exchanger 18.

Eine elektrisch angetriebene Pumpe 21 für das Kältemittel ist an dem zweiten Wärmetauscher 18 befestigt und hat zwei Anschlussstutzen 22, 23, von denen einer 22 zum Verbinden mit einer der Kältemittelleitungen 5, 6 vorgesehen ist und der andere 23 in den zweiten Wärmetauscher 18 mündet. Ein weiterer Anschlussstutzen 24 zum Verbinden mit einer der Kältemittelleitungen 5, 6 ist an der oberen Halbschale des zweiten Wärmetauschers 18 angeordnet. Ein elektrisches Versorgungskabel 25 der Pumpe trägt einen Stecker 26. Eine nicht gezeigte, zu dem Stecker 26 komplementäre Buchse für die Stromversorgung der Pumpe 21 ist an der Innenwand des Gefrierfachs 2 angeordnet.An electrically driven pump 21 for the refrigerant is attached to the second heat exchanger 18 and has two connecting pieces 22, 23, one of which 22 is provided for connection to one of the refrigerant lines 5, 6 and the other 23 opens into the second heat exchanger 18. Another connecting piece 24 for connecting to one of the refrigerant lines 5, 6 is arranged on the upper half-shell of the second heat exchanger 18. An electrical supply cable 25 of the pump carries a plug 26. A socket, not shown, complementary to the plug 26 for the power supply of the pump 21 is disposed on the inner wall of the freezer compartment 2.

Eine in der Fig. nicht dargestellte Steuerschaltung ist an der Pumpe 21 angebracht. Sie ist ausgelegt, um nach Drücken eines Schalters durch einen Benutzer die Pumpe 21 für eine Zeitspanne mit Strom zu versorgen, deren Länge so gewählt ist, dass sie zum Gefrieren von in den Eisbehälter 16 eingefülltem Wasser ausreicht. Nach Ablauf der Zeitspanne stellt die Steuerschaltung die Pumpe 21 aus. Das Eis im Eisbehälter beginnt nun langsam zu tauen, was durchaus erwünscht ist, da die in den einzelnen Vertiefungen 17 des Eisbehälters 16 gebildeten Eisstücke leichter zu entnehmen sind, wenn sie oberflächlich getaut sind.A control circuit not shown in the figure is attached to the pump 21. It is designed to supply power to the pump 21 for a period of time when a user depresses a switch, the length of which is selected to be sufficient to freeze water filled in the ice container 16. After expiration of the period of time, the control circuit turns off the pump 21. The ice in the ice container now begins to thaw slowly, which is quite desirable, since the pieces of ice formed in the individual wells 17 of the ice container 16 are easier to remove when they are thawed on the surface.

Es kann auch vorgesehen werden, dass die Steuerschaltung nach Verstreichen der Zeitspanne die Pumpe 21 intermittierend mit Strom versorgt, wobei die Dauer der Einschaltphasen der Pumpe im intermittierenden Betrieb so gewählt ist, dass ein Auftauen des Eises auch über einen langen Zeitraum hinweg vermieden wird.It can also be provided that the control circuit after the lapse of time, the pump 21 intermittently energized, the duration of the switch-on of the pump is selected in the intermittent operation so that thawing of the ice is avoided over a long period of time.

Die Kantenlängen des im wesentlichen rechteckigen zweiten Wärmetauschers 18 entsprechen im wesentlichen der Breite und Tiefe des Gefrierfachs 2, so dass der zweite Wärmetauscher 18 in einfacher Weise durch Auflegen auf an den Seitenwänden des Gefrierfachs gebildete Vorsprünge oder Eingreifen in an diesen Wänden angeordnete Schienen platziert werden kann.The edge lengths of the substantially rectangular second heat exchanger 18 correspond substantially to the width and depth of the freezer compartment 2, so that the second heat exchanger 18 can be easily placed by placing projections or engagement formed on the side walls of the freezer compartment into rails disposed on these walls ,

Alternativ ist auch möglich, den zweiten Wärmetauscher 18 lose auf eine Etagere 27 aufzulegen, die in einem geringen Abstand von wenigen Zentimetern von der Decke des Gefrierfachs 2 angeordnet ist. Diese Variante ist insbesondere zweckmäßig, wenn der Eisbereiter durch einen Benutzer im Kältegerät montierbar und demontierbar ist, da die Etagere 27, wenn sie nicht den zweiten Wärmetauscher 18 trägt, dann als Träger für Kühlakkus oder dergleichen nutzbar ist.Alternatively, it is also possible for the second heat exchanger 18 to hang loosely on an etager 27, which is arranged at a small distance of a few centimeters from the ceiling of the freezer compartment 2. This variant is particularly useful when the icemaker is mounted and dismounted by a user in the refrigerator because the etagere 27, if it does not carry the second heat exchanger 18, then usable as a carrier for cooling batteries or the like.

Als Kältemittel für den Eisbereiter kommt insbesondere ein Alkohol oder Alkoholgemisch oder ein Alkohol-Wasser-Gemisch in Betracht.As a refrigerant for the ice maker is particularly an alcohol or alcohol mixture or an alcohol-water mixture into consideration.

Alternativ zu den oben beschriebenen Ausführungsbeispielen kann die Pumpe und gegebenenfalls ihre Steuerschaltung selbstverständlich auch in der ersten Baugruppe enthalten sein.As an alternative to the embodiments described above, the pump and possibly its control circuit can of course also be contained in the first module.

Selbstverständlich kann das Gefrierfach 2 auch oben im Kältegerät und das Normal- oder Frischkühlfach 1 darunter angeordnet sein; in diesem Fall ist Einbauraum für den zweiten Wärmetauscher am Boden des Gefrierfachs 2 vorgesehen.Of course, the freezer compartment 2 can also be arranged at the top of the refrigerator and the normal or fresh refrigerator compartment 1 below; In this case, installation space for the second heat exchanger at the bottom of the freezer compartment 2 is provided.

Claims (10)

  1. Refrigerating appliance with an icemaker, wherein the icemaker comprises a refrigerant circuit, which contains a refrigerant, and an ice container (16), which is disposed in thermal contact with the refrigerant circuit by way of a first heat exchanger (12), wherein the refrigerant circuit is separated from a refrigerant circuit of the refrigerating appliance and comprises a second heat exchanger (18), wherein the refrigerating appliance comprises at least one first cooling zone (1) and second cooling zone (2) which can be kept at different temperatures, characterised in that the ice container (16) is arranged in the first cooling zone (1) and the second heat exchanger (18) is arranged in the second cooling zone (2).
  2. Refrigerating appliance according to claim 1, characterised in that the second heat exchanger (18) is arranged at the top or the base of the second cooling zone (2).
  3. Refrigerating appliance according to claim 1 or 2, characterised in that the second heat exchanger (18) extends substantially over the entire width and/or depth of the second cooling zone (2).
  4. Refrigerating appliance according to any one of claims 1 to 3, characterised in that the icemaker is mountable and demountable.
  5. Refrigerating appliance according to any one of claims 1 to 4, characterised in that a plug connector for the current supply of a pump (21) is arranged at an inner wall of a cooling zone (2).
  6. Refrigerating appliance according to any one of claims 1 to 5, characterised in that the refrigerant circuit has between the first and second heat exchangers (12, 18) refrigerant lines (5, 6) formed at least in part by flexible hoses.
  7. Refrigerating appliance according to claim 1, characterised in that the second heat exchanger (18) is designed as a reservoir for a refrigerant.
  8. Refrigerating appliance according to any one of claims 1 to 7, characterised in that the pump is provided for circulating the refrigerant and a time switching device is provided for controlling operation of the pump.
  9. Refrigerating appliance according to any one of claims 1 to 8, characterised in that the refrigerant in the entire refrigerant circuit of the icemaker is liquid under normal operating conditions of the icemaker.
  10. Refrigerating appliance according to any one of claims 1 to 9, characterised in that the second heat exchanger (18) delivers heat to the cooling zone during operation of the icemaker.
EP03752666A 2002-05-16 2003-05-13 Refrigeration device and ice preparation unit therefor Expired - Lifetime EP1508006B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10221897 2002-05-16
DE10221897A DE10221897B4 (en) 2002-05-16 2002-05-16 Refrigerating appliance and ice maker for it
PCT/EP2003/005008 WO2003098133A1 (en) 2002-05-16 2003-05-13 Refrigeration device and ice preparation unit therefor

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EP1508006A1 EP1508006A1 (en) 2005-02-23
EP1508006B1 true EP1508006B1 (en) 2011-07-13

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US (1) US7216499B2 (en)
EP (1) EP1508006B1 (en)
CN (1) CN100353131C (en)
AT (1) ATE516471T1 (en)
AU (1) AU2003232765A1 (en)
BR (1) BR0310024A (en)
DE (1) DE10221897B4 (en)
ES (1) ES2366948T3 (en)
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WO (1) WO2003098133A1 (en)

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CN1653306A (en) 2005-08-10
EP1508006A1 (en) 2005-02-23
CN100353131C (en) 2007-12-05
ATE516471T1 (en) 2011-07-15
RU2311596C2 (en) 2007-11-27
DE10221897A1 (en) 2003-12-04
US7216499B2 (en) 2007-05-15
RU2004133382A (en) 2005-09-10
BR0310024A (en) 2005-02-15
WO2003098133A1 (en) 2003-11-27
DE10221897B4 (en) 2005-03-10
ES2366948T3 (en) 2011-10-26
AU2003232765A1 (en) 2003-12-02
US20050061009A1 (en) 2005-03-24

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