EP0602379A2 - Refrigerator, especially multi-temperature refrigerator - Google Patents
Refrigerator, especially multi-temperature refrigerator Download PDFInfo
- Publication number
- EP0602379A2 EP0602379A2 EP93117985A EP93117985A EP0602379A2 EP 0602379 A2 EP0602379 A2 EP 0602379A2 EP 93117985 A EP93117985 A EP 93117985A EP 93117985 A EP93117985 A EP 93117985A EP 0602379 A2 EP0602379 A2 EP 0602379A2
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- EP
- European Patent Office
- Prior art keywords
- compartments
- refrigerant
- compartment
- evaporators
- temperature
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
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- 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
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2511—Evaporator distribution valves
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- 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
- F25D2317/068—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 fans
- F25D2317/0682—Two or more fans
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- 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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/04—Refrigerators with a horizontal mullion
Definitions
- the invention relates to a cooling device, in particular a multi-temperature cooling device with a refrigeration machine and a heat-insulated housing, in which an evaporator system connected by refrigerant lines is arranged, the evaporators of which form the system are arranged individually in compartments which are thermally separated from one another, the temperature of which is determined by a supply of the refrigerant can be influenced to the respective evaporators via a valve unit controlling controller arrangement, the need for the supply of refrigerant via temperature sensors in the compartments being signaled to the controller arrangement.
- DE-PS 33 14 056 discloses a freezer with two compartments arranged one above the other, which are thermally separated from one another and can be used in different applications.
- both compartments can be operated as freezer compartments
- a second variant provides for operating the lower one as a freezer compartment and the higher one as a normal cooling compartment.
- a third Variant is proposed to use the lower compartment as a freezer compartment and to shut down the higher compartment.
- an additional evaporator with a lower cooling capacity is provided, all of which are supplied with refrigerant from a single compressor, the refrigerant flow to the individual evaporators being controllable via two valve arrangements, with the aid of which three refrigerant circuits are formed.
- One of the valve arrangements namely the one that precedes the inputs of the evaporators arranged in series with the higher cooling capacity, can form two refrigerant circuits, with refrigerant flowing through both evaporators in a first valve position and only the downstream evaporator alone with it in a second valve position Refrigerant is applied.
- the second of the valve arrangements is arranged at the outlet of the evaporator connected in series with the evaporators of higher refrigeration capacity and enables the refrigerant to flow to the additional evaporator which is installed in the higher compartment of the freezer, in which the one in front of the evaporator with higher refrigeration capacity is also arranged is.
- the additional evaporator located in the higher compartment is inserted into the refrigerant circuit and connected to the active freezer evaporator located in the lower compartment, while the freezer evaporator located in the upper compartment is inactive.
- the cooling capacity in the compartment operated as a normal refrigerator compartment is severely reduced, so that when the temperature of the normal refrigerator compartment is requested, the freezing process is temporary must be interrupted, causing the freezing performance to drop sharply. If you want to avoid this, the refrigeration system, the amount of which is determined by the freezer evaporator which can be operated alone, must be overfilled.
- the invention is based on the object, in a cooling device with a plurality of thermally separated compartments of different temperatures, to form the cooling circuits required for cooling the compartments in such a way that each compartment can be regulated independently of another within the temperature range defined for its intended use, without the cooling capacity is reduced in the individual subjects.
- the object is achieved in accordance with the invention in that at least three compartments are provided with the evaporators assigned to them and valve units connected upstream thereof to control them, the compartment with the greatest cooling capacity being able to be acted upon with refrigerant on its own, while each of the other compartments if necessary, in series connection in front of the compartment with the highest cooling capacity, can be acted on with refrigerant.
- the solution according to the invention is characterized on the one hand by the fact that the freezer compartment is always cooled as a result of the fact that it is connected downstream of the other compartments, so that only a small additional independent runtime is necessary and the freezing performance is high.
- each of the cooling compartments can be controlled separately, so that the temperature range required for your application is kept within narrow limits regardless of external influences, such as the outside temperature surrounding the cooling device or the loading of large quantities of fresh refrigerated goods into one of the other compartments.
- such an arrangement in which the coldest evaporator is connected downstream of the others, causes the entire refrigerant to collect in it and is thus made available to the respectively active refrigeration circuit without delay.
- the number of valve units is smaller by the number 1 than the number of evaporators, the valve units being designed as electromagnetically operated 3/2-way valves.
- valve units are arranged in series with one another.
- Such an embodiment is characterized by its low expenditure on refrigerant lines.
- the temperatures in the differently cooled compartments are observed particularly precisely if, according to a further advantageous embodiment of the subject of the invention, it is provided that the valve units are controlled independently of one another by a controller evaluating the temperatures in the individual compartments, the temperatures being detected by temperature sensors and signaled to the controller.
- a fan is arranged in each compartment, which forcibly circulates the air in these compartments in both cooling and defrosting operation, the Fan air flow is superimposed on the convection current generated by the cooling capacity of the respective evaporator.
- the subjects mentioned e.g. can be used as a cellar compartment or as a 0 ° compartment, achieving an almost even temperature distribution within the compartment.
- two temperature sensors are provided in each of the other compartments, one of which is arranged on the evaporator surface, while the other detects the air temperature in the compartment.
- a household cooling device 10 is shown, the heat-insulated housing 11 of which is provided at its opening with doors 12 to 14 which are attached at the opening edge and can be opened separately.
- doors 12 to 14 three in the interior of the housing 11 one above the other and by means of partitions thermally separated compartments 15 to 17 of different temperature can be closed, of which the overhead, lockable with the door 12 compartment as a freezer compartment, the middle compartment 16, which the Door 13 assigned is used as a normal cooling compartment, while the underlying compartment 17 is designed as a cellar compartment and can be closed with the door 14.
- the different temperatures in the individual compartments 12 to 14 are maintained with a refrigeration system which is explained in more detail below.
- the refrigeration system 18 which serves to cool the compartments 15 to 17 and which has an evaporator system connected to one another by refrigerant lines is equipped with a single refrigerant compressor 19.
- the refrigerant compressor 19 is followed by a condenser 20 on the pressure side, which is arranged, for example, on the rear side facing away from the opening of the housing 11.
- a dryer cartridge 21 connects to the outlet of the condenser 20, the outlet of which is connected to the inlet of a first valve unit 22.
- One of the outputs of the first valve unit 22 is connected in terms of flow technology to the input of a second valve unit 22 of the same type, forming a series connection between the two.
- Each of the outputs of the valve units 22, which represent the entrance to the refrigerant circuits, is followed in each case by a throttle member 23 wound in a spiral-like manner and designed as a capillary tube.
- the evaporator system forming evaporators 24 to 26, the evaporator 24, which is arranged only in the refrigeration circuit I, equipped with the highest cooling capacity and is assigned to the freezer compartment 12.
- the evaporator 25 used to maintain the temperature in the normal cooling compartment 16 is arranged together with the freezer evaporator 24 connected downstream in the refrigeration circuit III, while the evaporator 26, the cellar compartment 17 is assigned, together with the freezer evaporator 24, arranged in series in front of this, is arranged in the refrigeration circuit II.
- Each of the refrigerant circuits I to III leads via the freezer compartment evaporator 24, which is connected on the suction side to the compressor 19 via a refrigerant line (not specified) and, if necessary, when refrigeration is required in the freezer compartment 15, can be supplied with refrigerant via the refrigerant circuit I alone, while both the evaporator 25 in the normal refrigeration compartment 16 and that in the basement compartment 17, in each case connected in series in front of the evaporator 24, can be acted upon by liquid refrigerant via the refrigerant circuits II and III, as a result of which the freezer compartment 15 is always also cooled.
- the cooling requirement in the compartments 15 and 16 is determined via the temperature sensors 27 in the form of air sensors, and in the freezer compartment 14 via a sensor 28 arranged on the surface of the evaporator 24. Their signals are fed via signal lines 29 to and from a controller arrangement 30 evaluated. Depending on the sensor signals, the controller arrangement 30 controls, via electrical connecting lines 31, both the switching on and off of the refrigerant compressor 19 and the valve position of the valve units 22, depending on which of the refrigerant circuits is to be charged with refrigerant.
- fans 33 are also controlled via the control arrangement 30 via electrical lines 32, one of which is arranged in the normal cooling compartment 16 and the other in the basement compartment 17 and is used there to reduce the temperature stratification both in cooling operation and in defrosting operation, the arrangement of which convection current generated by the cooling capacity of the respective evaporator is supported.
- temperature sensors (not shown) are provided in the basement compartment 17 and in the normal cooling compartment 16 on the surfaces of the evaporators 25 and 26 arranged there, which end the defrosting process after a predetermined temperature threshold has been reached.
- shut-off valves can also be used, such a shut-off valve being arranged in front of the throttle elements 25, for example, in each of the refrigerant circuits.
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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)
Abstract
Description
Die Erfindung betrifft ein Kühlgerät, insbesondere ein Mehrtemperaturen-Kühlgerät mit einer Kältemaschine und einem wärmeisolierten Gehäuse, in welchem ein durch Kältemittelleitungen miteinander verbundenes Verdampfersystem angeordnet ist, dessen das System bildende Verdampfer einzeln in voneinander thermisch getrennten Fächern angeordnet sind, deren Temperatur durch eine die Kältemittelzufuhr zu den jeweiligen Verdampfern über eine Ventileinheit steuernde Regleranordnung beeinflußbar ist, wobei die Notwendigkeit der Kältemittelzufuhr über Temperaturfühler in den Fächern an die Regleranordnung signalisiert ist.The invention relates to a cooling device, in particular a multi-temperature cooling device with a refrigeration machine and a heat-insulated housing, in which an evaporator system connected by refrigerant lines is arranged, the evaporators of which form the system are arranged individually in compartments which are thermally separated from one another, the temperature of which is determined by a supply of the refrigerant can be influenced to the respective evaporators via a valve unit controlling controller arrangement, the need for the supply of refrigerant via temperature sensors in the compartments being signaled to the controller arrangement.
Aus der DE-PS 33 14 056 ist ein Gefriergerät mit zwei übereinander angeordneten Fächern bekannt, die thermisch voneinander getrennt und in unterschiedlichen Anwendungen einsetzbar sind. In einer ersten Variante können beide Fächer als Gefrierfächer betrieben werden, während eine zweite Variante vorsieht, das tieferliegende als Gefrierfach und das höherliegende als Normalkühlfach zu betreiben. In einer dritten Variante ist vorgeschlagen, das tieferliegende Fach als Gefrierfach einzusetzen und das höherliegende Fach stillzulegen.DE-PS 33 14 056 discloses a freezer with two compartments arranged one above the other, which are thermally separated from one another and can be used in different applications. In a first variant, both compartments can be operated as freezer compartments, while a second variant provides for operating the lower one as a freezer compartment and the higher one as a normal cooling compartment. In a third Variant is proposed to use the lower compartment as a freezer compartment and to shut down the higher compartment.
Zur Kühlung der Fächer ist neben zwei Verdampfern hoher Kälteleistung ein zusätzlicher Verdampfer geringerer Kälteleistung vorgesehen, die alle von einem einzigen Verdichter mit Kältemittel versorgt werden, wobei der Kältemittelzufluß zu den einzelnen Verdampfern über zwei Ventilanordnungen steuerbar ist, mit deren Hilfe drei Kältemittelkreisläufe gebildet sind. Durch eine der Ventilanordnungen, nämlich der, die den Eingängen der in Reihenschaltung angeordneten Verdampfer mit der höheren Kälteleistung vorgeschaltet ist, sind zwei Kältemittelkreisläufe bildbar, wobei in einer ersten Ventilstellung beide Verdampfer von Kältemittel durchströmt werden und in einer zweiten Ventilstellung nur der nachgeschaltete Verdampfer allein mit Kältemittel beaufschlagt ist. Die zweite der Ventilanordnungen ist am Ausgang des in der Reihenschaltung der Verdampfer höherer Kälteleistung nachgeschalteten Verdampfers angeordnet und ermöglicht den Kältemittelzufluß zu dem zusätzlichen Verdampfer, der in dem höherliegenden Fach des Gefriergerätes installiert ist, in welchem auch der in der Reihenschaltung der Verdampfer höherer Kälteleistung voranliegende angeordnet ist.To cool the compartments, in addition to two evaporators with a high cooling capacity, an additional evaporator with a lower cooling capacity is provided, all of which are supplied with refrigerant from a single compressor, the refrigerant flow to the individual evaporators being controllable via two valve arrangements, with the aid of which three refrigerant circuits are formed. One of the valve arrangements, namely the one that precedes the inputs of the evaporators arranged in series with the higher cooling capacity, can form two refrigerant circuits, with refrigerant flowing through both evaporators in a first valve position and only the downstream evaporator alone with it in a second valve position Refrigerant is applied. The second of the valve arrangements is arranged at the outlet of the evaporator connected in series with the evaporators of higher refrigeration capacity and enables the refrigerant to flow to the additional evaporator which is installed in the higher compartment of the freezer, in which the one in front of the evaporator with higher refrigeration capacity is also arranged is.
Soll das Gefriergerät als Kühl- und Gefrierkombination eingesetzt werden, ist der in dem höherliegenden Fach angeordnete zusätzliche Verdampfer in den Kältemittelkreislauf eingeblendet und dem aktiven, im tieferliegenden Fach angeordneten Gefrierfach-Verdampfer nachgeschaltet, während der im obenliegenden Fach befindliche Gefrierfach-Verdampfer inaktiv geschaltet ist.If the freezer is to be used as a fridge and freezer combination, the additional evaporator located in the higher compartment is inserted into the refrigerant circuit and connected to the active freezer evaporator located in the lower compartment, while the freezer evaporator located in the upper compartment is inactive.
Für den Fall, daß bei Betrieb des Gerätes als Kühl- und Gefrierkombination in das Gefrierfach große Mengen frischen Guts eingelagert wird, das ausgefroren werden soll, wird die Kälteleistung im als Normalkühlfach betriebenen Fach stark geschmälert, so daß bei Temperaturanforderung des Normalkühlfachs, der Gefriervorgang zeitweilig unterbrochen werden muß, wodurch die Gefrierleistung stark absinkt. Will man dies vermeiden, muß das Kältesystem, dessen Füllmenge von dem allein betreibbaren Gefrierfach-Verdampfer bestimmt ist, überfüllt werden.In the event that large quantities of fresh goods that are to be frozen out are stored in the freezer compartment when the device is operated as a refrigerator and freezer combination, the cooling capacity in the compartment operated as a normal refrigerator compartment is severely reduced, so that when the temperature of the normal refrigerator compartment is requested, the freezing process is temporary must be interrupted, causing the freezing performance to drop sharply. If you want to avoid this, the refrigeration system, the amount of which is determined by the freezer evaporator which can be operated alone, must be overfilled.
Der Erfindung liegt die Aufgabe zugrunde, bei einem Kühlgerät mit mehreren voneinander thermisch getrennten Fächern unterschiedlicher Temperatur, die zur Kühlung der Fächer erforderlichen Kältekreisläufe so auszubilden, daß jedes Fach unabhängig von einem anderen innerhalb des für seinen Anwendungszweck definierten Temperaturbereichs regelbar ist, ohne das die Kälteleistung in den einzelnen Fächern geschmälert ist.The invention is based on the object, in a cooling device with a plurality of thermally separated compartments of different temperatures, to form the cooling circuits required for cooling the compartments in such a way that each compartment can be regulated independently of another within the temperature range defined for its intended use, without the cooling capacity is reduced in the individual subjects.
Die Aufgabe wird gemäß der Erfindung dadurch gelöst, daß zumindest drei Fächer mit den ihnen zugeordneten Verdampfern und diesen zu deren Steuerung vorgeschalteten Ventileinheiten vorgesehen sind, wobei das Fach mit der größten Kälteleistung im Bedarfsfall allein für sich mit Kältemittel beaufschlagbar ist, während jedes der anderen Fächer im Bedarfsfall, jeweils in Reihenschaltung vor dem Fach mit der höchsten Kälteleistung liegend, mit Kältemittel beaufschlagbar ist.The object is achieved in accordance with the invention in that at least three compartments are provided with the evaporators assigned to them and valve units connected upstream thereof to control them, the compartment with the greatest cooling capacity being able to be acted upon with refrigerant on its own, while each of the other compartments if necessary, in series connection in front of the compartment with the highest cooling capacity, can be acted on with refrigerant.
Die erfindungsgemäße Lösung zeichnet sich einerseits dadurch aus, daß das Gefrierfach aufgrund dessen, daß es den anderen Fächern nachgeschaltet ist, stets mitgekühlt wird, so daß nur eine geringe zusätzliche Eigenlaufzeit notwendig und die Gefrierleistung hoch ist. Andererseits ist jedes der Kühlfächer separat regelbar, so daß der für ehren Anwendungszweck erforderliche Temperaturbereich in engen Grenzen unabhängig von äußeren Einflüssen, wie die das Kühlgerät umgebende Außentemperatur oder die Einladung von großen Mengen frischen Kühlguts in eines der anderen Fächer, eingehalten wird. Außerdem bewirkt eine derartige Anordnung, bei der der kälteste Verdampfer den anderen nachgeschaltet ist, daß sich in diesem das gesamte Kältemittel sammelt und somit dem jeweilig aktiven Kältekreis unverzögert zur Verfügung gestellt ist.The solution according to the invention is characterized on the one hand by the fact that the freezer compartment is always cooled as a result of the fact that it is connected downstream of the other compartments, so that only a small additional independent runtime is necessary and the freezing performance is high. On the other hand, each of the cooling compartments can be controlled separately, so that the temperature range required for your application is kept within narrow limits regardless of external influences, such as the outside temperature surrounding the cooling device or the loading of large quantities of fresh refrigerated goods into one of the other compartments. In addition, such an arrangement, in which the coldest evaporator is connected downstream of the others, causes the entire refrigerant to collect in it and is thus made available to the respectively active refrigeration circuit without delay.
Nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß die Zahl der Ventileinheiten um die Zahl 1 geringer ist als die Zahl der Verdampfer, wobei die Ventileinheiten als elektromagnetisch betriebene 3/2-Wege-Ventile ausgebildet sind.According to a further preferred embodiment of the subject matter of the invention, it is provided that the number of valve units is smaller by the number 1 than the number of evaporators, the valve units being designed as electromagnetically operated 3/2-way valves.
Der Vorteil einer derartigen Lösung liegt darin, daß bei noch vertretbarem Aufwand für die Ventile und deren Ansteuerleitungen eine sichere Ansteuerung der einzelnen Verdampfer gewährleistet ist.The advantage of such a solution lies in the fact that safe control of the individual evaporators is ensured with a justifiable expense for the valves and their control lines.
Gemäß einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß die Ventileinheiden in Reihenschaltung zueinander angeordnet sind.According to a next preferred embodiment of the object of the invention it is provided that the valve units are arranged in series with one another.
Eine solche Ausgestaltung zeichnet sich durch ihren geringen Aufwand an Kältemittelleitungen aus.Such an embodiment is characterized by its low expenditure on refrigerant lines.
Besonders genau eingehalten werden die Temperaturen in den unterschiedlich gekühlten Fächern, wenn nach einer weiteren vorteilhaften Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß die Ventileinheiten unabhängig voneinander, von einem die Temperaturen in den einzelnen Fächern auswertenden Regeler gesteuert sind, wobei die Temperaturen von Temperaturfühlern erfaßt und an den Regler signalisiert werden.The temperatures in the differently cooled compartments are observed particularly precisely if, according to a further advantageous embodiment of the subject of the invention, it is provided that the valve units are controlled independently of one another by a controller evaluating the temperatures in the individual compartments, the temperatures being detected by temperature sensors and signaled to the controller.
Entsprechend einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß außer in dem Fach mit der größten Kälteleistung, jedem der anderen Fächer ein Ventilator angeordnet ist, der die Luft in diesen Fächern sowohl im Kühl- als auch im Abtaubetrieb zwangsweise umwälzt, wobei der Ventilator-Luftstrom den durch die Kälteleistung der jeweiligen Verdampfer erzeugten Konvektionsstrom überlagert ist.According to a further preferred embodiment of the object of the invention it is provided that in addition to the compartment with the highest cooling capacity, a fan is arranged in each compartment, which forcibly circulates the air in these compartments in both cooling and defrosting operation, the Fan air flow is superimposed on the convection current generated by the cooling capacity of the respective evaporator.
Durch eine solche Lösung wird in den genannten Fächern, die z.B. als Kellerfach oder als 0°-Fach Anwendung finden, eine nahezu gleichmäßige Temperaturverteilung innerhalb des Faches erreicht.With such a solution, the subjects mentioned, e.g. can be used as a cellar compartment or as a 0 ° compartment, achieving an almost even temperature distribution within the compartment.
Nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß außer in dem Fach mit der größten Kälteleistung, in jedem der anderen Fächer zwei Temperaturfühler vorgesehen sind, von denen einer an der Verdampferoberfläche angeordnet ist, während der andere die Lufttemperatur im Fach erfaßt.According to a further preferred embodiment of the object of the invention it is provided that in addition to the compartment with the highest cooling capacity, two temperature sensors are provided in each of the other compartments, one of which is arranged on the evaporator surface, while the other detects the air temperature in the compartment.
Die Vorteile einer solchen Lösung sind darin zu sehen, daß neben einem automatischen Abtauen auch die Aufrechterhaltung der Temperaturen in diesen beiden Fächern, insbesondere wenn es sich um ein 0°-Fach oder ein Kellerfach handelt, in engen Toleranzgrenzen möglich.The advantages of such a solution can be seen in the fact that, in addition to automatic defrosting, the maintenance of the temperatures in these two compartments, in particular if it is a 0 ° compartment or a cellar compartment, is possible within narrow tolerance limits.
Die Erfindung ist in der nachfolgenden Beschreibung am Beispiel eines in der Zeichnung vereinfacht dargestellten 3-Temperaturen-Kühlgerätes erläutert. Es zeigen:
- Fig. 1
- Ein 3-Temperaturen-Haushalts-Kühlgerät, dessen thermisch voneinander getrennte Fächer unterschiedlicher Temperatur mit separaten Türen verschließbar sind, in räumlicher Darstellung von vorne und
- Fig. 2
- in vereinfachter, schematischer Darstellung, die zur Aufrechterhaltung der Temperatur in den Fächern des 3-Temperaturen-Kühlgeräts eingesetzte Kälteanlage, mit ihren sybolisch dargestellten Elementen für die Temperaturregelung der Fächer.
- Fig. 1
- A 3-temperature household refrigerator, the thermally separated compartments of different temperatures can be closed with separate doors, in a spatial representation from the front and
- Fig. 2
- in a simplified, schematic representation, the refrigeration system used to maintain the temperature in the compartments of the 3-temperature cooling device, with its sybolically represented elements for the temperature control of the compartments.
Gemäß Fig. 1 ist ein Haushalts-Kühlgerät 10 gezeigt, dessen wärmeisoliertes Gehäuse 11 an seiner Öffnung mit am Öffnungsrand angeschlagenen und separat zu öffnenden Türen 12 bis 14 versehen ist. Durch die Türen 12 bis 14 sind drei im Innenraum des Gehäuses 11 übereinander angeordnete und mittels Zwischenwänden voneinander thermisch getrennte Fächer 15 bis 17 unterschiedlicher Temperatur verschließbar, von denen das obenliegende, mit der Tür 12 verschließbare Fach als Gefrierfach, das mittlere Fach 16, dem die Tür 13 zugeordnet ist, als Normalkühlfach dient, während das untenliegende Fach 17 als Kellerfach ausgebildet und mit der Tür 14 verschließbar ist. Die unterschiedliche Temperatur in den einzelnen Fächern 12 bis 14 wird mit einer weiter unten genauer erläuterten Kälteanlage aufrecht erhalten.1, a
Wie Fig. 2 zeigt, ist die zur Kühlung der Fächer 15 bis 17 dienende Kälteanlage 18, die ein durch Kältemittelleitungen miteinander verbundenes Verdampfersystem aufweist, mit einem einzigen Kältemittelverdichter 19 ausgestattet. Dem Kältemittelverdichter 19 ist druckseitig ein Verflüssiger 20 nachgeschaltet, der beispielsweise auf der von der Öffnung des Gehäuses 11 abgewandten Rückseite angeordnet ist. An den Ausgang des Verflüssigers 20 schließt eine Trocknerpatrone 21 an, deren Ausgang mit dem Eingang einer ersten Ventileinheit 22 verbunden ist. Einer der Ausgänge der ersten Ventileinheit 22 steht mit dem Eingang einer zweiten gleichartigen Ventileinheit 22, eine Reihenschaltung zwischen diesen beiden bildend, strömungstechnisch in Verbindung. Durch die noch freien Ausgänge der in Reihenschaltung zueinander angeordneten, als elektromagnetisch betriebene 3/2-Wege-Ventile ausgebildeten Ventileinheiten 22 sind drei unterschiedliche Kältekreisläufe I, II und III gebildet, die mit Kältemittel beaufschlagbar sind, wobei die Ventileinheiten 22, die Bestandteil der Kältemittelkreisläufe I, II und III sind, als Steuerorgane für die Kältemittelzufuhr zu dem jeweiligen Kältemittelkreislauf dienen und den vom Verflüssiger 20 über die Trocknerpatrone 21 ankommenden Kältemittelfluß in einen der Kreisläufe umleiten. Jedem der Ausgänge der Ventileinheiten 22, die den Eingang zu den Kältemittelkreisläufen darstellen, ist jeweils ein spiralenartig aufgewickeltes, als Kapillarrohr ausgebildetes Drosselorgan 23 nachgeschaltet. Diese senken den Druck des vom Verflüssiger 20 kommenden Kältemittels auf den jeweiligen Arbeitsdruck von innen nachgeschalteten, mit unterschiedlicher Kälteleistung ausgestatteten, das Verdampfersystem bildenden Verdampfern 24 bis 26, wobei der Verdampfer 24, der allein im Kältekreislauf I angeordnet ist, mit der höchsten Kälteleistung ausgestattet und dem Gefrierfach 12 zugeordnet ist. Von den beiden anderen Verdampfern 25 und 26, die beide in etwa die gleiche Kälteleistung aufweisen, ist der zur Aufrechterhaltung der Temperatur im Normalkühlfach 16 dienende Verdampfer 25 zusammen mit dem ihm nachgeschalteten Gefrierfachverdampfer 24 im Kältekreislauf III angeordnet, während der Verdampfer 26, der dem Kellerfach 17 zugeordnet ist, zusammen mit dem Gefrierfachverdampfer 24, in Reihenschaltung vor diesem liegend, im Kältekreislauf II angeordnet ist.As shown in FIG. 2, the
Jeder der Kältelmittelkreisläufe I bis III führt über den Gefrierfachverdampfer 24, der über eine nicht näher bezeichnete Kältemittelleitung saugseitig an den Verdichter 19 angeschlossen und im Bedarfsfall, wenn Kältebedarf im Gefrierfach 15 vorliegt, allein für sich mit Kältemittel über den Kältemittelkreislauf I beaufschlagbar ist, während sowohl der Verdampfer 25 im Normalkühlfach 16 als auch der im Kellerfach 17, jeweils in Reihenschaltung vor dem Verdampfer 24 liegend, über die Kältemittelkreisläufe II und III mit flüssigem Kältemittel beaufschlagbar ist, wodurch das Gefrierfach 15 stets mitgekühlt wird. Der Kältebedarf in den Fächern 15 und 16 wird über die Raumluft erfassende Temperaturfühler 27 in Form von Luftfühlern und im Gefrierfach 14 über einen an der Oberfläche des Verdampfers 24 angeordneten Fühler 28 ermittelt. Deren Signale werden über Signalleitungen 29 einer Regleranordnung 30 zugeleitet und von dieser ausgewertet. Die Regleranordnung 30 steuert in Abhängigkeit der Fühlersignale, über elektrische Verbindungsleitungen 31 sowohl das Ein- und Ausschalten des Kältemittelverdichters 19 als auch die Ventilstellung der Ventileinheiten 22, je nachdem, welcher der Kältemittelkreise mit Kältemittel beaufschlagt werden soll. Zudem werden über die Regleranordnung 30 über elektrische Leitungen 32 noch Ventilatoren 33 angesteuert, von denen jeweils einer im Normalkühlfach 16 und der andere im Kellerfach 17 angeordnet ist und dort zur Reduzierung der Temperaturschichtung sowohl im Kühlbetrieb als auch im Abtaubetrieb dienen, wobei durch ihre Anordnung der durch die Kälteleistung des jeweiligen Verdampfers erzeugte Konvektionsstrom unterstützt ist. Für die Steuerung des Abtaubetriebes, der bedarfsweise eingeleitet wird, sind im Kellerfach 17 und im Normalkühlfach 16 an den Oberflächen der dort angeordneten Verdampfer 25 und 26, nicht gezeigte Temperaturfühler vorgesehen, die den Abtauvorgang nach Erreichen einer vorgegebenen Temperaturschwelle beenden.Each of the refrigerant circuits I to III leads via the
Es versteht sich, daß anstelle der zwei Ventilanordnungen 22 in Form von 3/2-Wege-Ventilen auch einfach Absperrventile Anwendung finden können, wobei beispielsweise in jedem der Kältemittelkreisläufe, noch vor den Drosselorganen 25 ein solches Absperrventil angeordnet wäre.It goes without saying that instead of the two
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19924242776 DE4242776A1 (en) | 1992-12-17 | 1992-12-17 | Cooling device, in particular multi-temperature cooling device |
| DE4242776 | 1992-12-17 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0602379A2 true EP0602379A2 (en) | 1994-06-22 |
| EP0602379A3 EP0602379A3 (en) | 1994-07-27 |
| EP0602379B1 EP0602379B1 (en) | 2002-03-20 |
Family
ID=6475650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93117985A Expired - Lifetime EP0602379B1 (en) | 1992-12-17 | 1993-11-05 | Refrigerator, especially multi-temperature refrigerator |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0602379B1 (en) |
| DE (2) | DE4242776A1 (en) |
| DK (1) | DK0602379T3 (en) |
| ES (1) | ES2173880T3 (en) |
| TR (1) | TR27444A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996015413A1 (en) * | 1994-11-11 | 1996-05-23 | Samsung Electronics Co., Ltd. | Refrigerator and control method therefor |
| EP0732554A2 (en) * | 1995-03-16 | 1996-09-18 | Bosch-Siemens HausgerÀ¤te GmbH | Evaporator, in particular for compressor-operated domestic refrigerators |
| WO1997022841A1 (en) * | 1995-12-20 | 1997-06-26 | Bosch-Siemens Hausgeräte Gmbh | Refrigerating apparatus, in particular domestic refrigerating apparatus |
| EP1243880A1 (en) * | 2001-03-21 | 2002-09-25 | Kabushiki Kaisha Toshiba | Refrigerator with a plurality of parallel refrigerant passages |
| WO2008122493A1 (en) * | 2007-04-10 | 2008-10-16 | BSH Bosch und Siemens Hausgeräte GmbH | Cooling device having three temperature zones |
| DE19818288B4 (en) * | 1998-04-23 | 2009-04-30 | BSH Bosch und Siemens Hausgeräte GmbH | cooling unit |
| DE202008009956U1 (en) * | 2008-04-15 | 2009-08-20 | Liebherr-Hausgeräte Lienz Gmbh | Fridge and / or freezer |
| DE102008047818A1 (en) * | 2008-08-22 | 2010-02-25 | Liebherr-Hausgeräte Lienz Gmbh | Refrigerator/freezer for refrigerating foodstuffs, has temperature zones operating as refrigerating and freezer zones, and capillary pipes attached to outlets of valve, where two pipes include identical lengths and identical flow rates |
| EP2211128A1 (en) | 2005-11-30 | 2010-07-28 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating a refrigerator and a refrigerator in which the compressor is swittched on with a time delay |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5896753A (en) * | 1996-10-18 | 1999-04-27 | Lg Electronics Inc. | Freezing cycle apparatus having quick freezing and thawing functions |
| DE10140005A1 (en) | 2001-08-16 | 2003-02-27 | Bsh Bosch Siemens Hausgeraete | Combination refrigerator and evaporator arrangement therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0119024A2 (en) * | 1983-03-09 | 1984-09-19 | Kabushiki Kaisha Toshiba | Refrigerator cooling and freezing system |
| EP0126521A2 (en) * | 1983-05-18 | 1984-11-28 | Kabushiki Kaisha Toshiba | Refrigerator |
| FR2638824A1 (en) * | 1988-11-08 | 1990-05-11 | Fagor S Coop Ltda | REFRIGERATOR-FREEZER WITH THREE INDEPENDENT COMPARTMENTS |
-
1992
- 1992-12-17 DE DE19924242776 patent/DE4242776A1/en not_active Withdrawn
-
1993
- 1993-11-05 ES ES93117985T patent/ES2173880T3/en not_active Expired - Lifetime
- 1993-11-05 DK DK93117985T patent/DK0602379T3/en active
- 1993-11-05 EP EP93117985A patent/EP0602379B1/en not_active Expired - Lifetime
- 1993-11-05 DE DE59310273T patent/DE59310273D1/en not_active Expired - Lifetime
- 1993-12-15 TR TR01195/93A patent/TR27444A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0119024A2 (en) * | 1983-03-09 | 1984-09-19 | Kabushiki Kaisha Toshiba | Refrigerator cooling and freezing system |
| EP0126521A2 (en) * | 1983-05-18 | 1984-11-28 | Kabushiki Kaisha Toshiba | Refrigerator |
| FR2638824A1 (en) * | 1988-11-08 | 1990-05-11 | Fagor S Coop Ltda | REFRIGERATOR-FREEZER WITH THREE INDEPENDENT COMPARTMENTS |
Non-Patent Citations (1)
| Title |
|---|
| Langley, Refrigeration and Air Conditioning, 3. Auflage 1986, Seiten 336 und 352 * |
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0984236A3 (en) * | 1994-11-11 | 2000-05-24 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (h.m.cycle) and control method thereof |
| EP1596143A3 (en) * | 1994-11-11 | 2005-11-30 | Samsung Electronics Co, Ltd | Control method of a refrigerator |
| EP0984233A3 (en) * | 1994-11-11 | 2000-05-24 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (h.m.cycle) and control method thereof |
| EP0984234A3 (en) * | 1994-11-11 | 2000-05-24 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (h.m.cycle) and control method thereof |
| AU707209B2 (en) * | 1994-11-11 | 1999-07-08 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (H.M. cycle) and control method thereof |
| EP0982552A2 (en) * | 1994-11-11 | 2000-03-01 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (h.m.cycle) and control method thereof |
| EP0984233A2 (en) * | 1994-11-11 | 2000-03-08 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (h.m.cycle) and control method thereof |
| EP0984234A2 (en) * | 1994-11-11 | 2000-03-08 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (h.m.cycle) and control method thereof |
| EP0984235A2 (en) * | 1994-11-11 | 2000-03-08 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (h.m.cycle) and control method thereof |
| EP0984232A2 (en) * | 1994-11-11 | 2000-03-08 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (h.m.cycle) and control method thereof |
| EP0984232A3 (en) * | 1994-11-11 | 2000-05-17 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (h.m.cycle) and control method thereof |
| EP0982552A3 (en) * | 1994-11-11 | 2000-05-17 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (h.m.cycle) and control method thereof |
| WO1996015413A1 (en) * | 1994-11-11 | 1996-05-23 | Samsung Electronics Co., Ltd. | Refrigerator and control method therefor |
| EP0984235A3 (en) * | 1994-11-11 | 2000-05-24 | Samsung Electronics Co., Ltd. | Refrigerator having high efficiency multi-evaporator cycle (h.m.cycle) and control method thereof |
| EP1596143A2 (en) * | 1994-11-11 | 2005-11-16 | Samsung Electronics Co, Ltd | Control method of a refrigerator |
| EP0732554A3 (en) * | 1995-03-16 | 1997-03-12 | Bosch Siemens Hausgeraete | Evaporator, in particular for compressor-operated domestic refrigerators |
| EP0732554A2 (en) * | 1995-03-16 | 1996-09-18 | Bosch-Siemens HausgerÀ¤te GmbH | Evaporator, in particular for compressor-operated domestic refrigerators |
| WO1997022841A1 (en) * | 1995-12-20 | 1997-06-26 | Bosch-Siemens Hausgeräte Gmbh | Refrigerating apparatus, in particular domestic refrigerating apparatus |
| DE19818288B4 (en) * | 1998-04-23 | 2009-04-30 | BSH Bosch und Siemens Hausgeräte GmbH | cooling unit |
| EP1243880A1 (en) * | 2001-03-21 | 2002-09-25 | Kabushiki Kaisha Toshiba | Refrigerator with a plurality of parallel refrigerant passages |
| US6598410B2 (en) | 2001-03-21 | 2003-07-29 | Kabushiki Kaisha Toshiba | Refrigerator with a plurality of parallel refrigerant passages |
| EP2211128A1 (en) | 2005-11-30 | 2010-07-28 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating a refrigerator and a refrigerator in which the compressor is swittched on with a time delay |
| WO2008122493A1 (en) * | 2007-04-10 | 2008-10-16 | BSH Bosch und Siemens Hausgeräte GmbH | Cooling device having three temperature zones |
| US8245526B2 (en) | 2007-04-10 | 2012-08-21 | Bsh Bosch Und Siemens Hausgeraete Gmbh | Cooling device having three temperature zones |
| CN101652609B (en) * | 2007-04-10 | 2012-09-05 | Bsh博世和西门子家用器具有限公司 | Cooling device having three temperature zones |
| RU2468308C2 (en) * | 2007-04-10 | 2012-11-27 | Бсх Бош Унд Сименс Хаусгерете Гмбх | Refrigerating device with three temperature zones |
| DE202008009956U1 (en) * | 2008-04-15 | 2009-08-20 | Liebherr-Hausgeräte Lienz Gmbh | Fridge and / or freezer |
| DE102008047818A1 (en) * | 2008-08-22 | 2010-02-25 | Liebherr-Hausgeräte Lienz Gmbh | Refrigerator/freezer for refrigerating foodstuffs, has temperature zones operating as refrigerating and freezer zones, and capillary pipes attached to outlets of valve, where two pipes include identical lengths and identical flow rates |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59310273D1 (en) | 2002-04-25 |
| ES2173880T3 (en) | 2002-11-01 |
| EP0602379B1 (en) | 2002-03-20 |
| DK0602379T3 (en) | 2002-07-08 |
| DE4242776A1 (en) | 1994-06-23 |
| TR27444A (en) | 1995-05-24 |
| EP0602379A3 (en) | 1994-07-27 |
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