EP3587969A1 - Fridge and/or freezer - Google Patents
Fridge and/or freezer Download PDFInfo
- Publication number
- EP3587969A1 EP3587969A1 EP19182525.6A EP19182525A EP3587969A1 EP 3587969 A1 EP3587969 A1 EP 3587969A1 EP 19182525 A EP19182525 A EP 19182525A EP 3587969 A1 EP3587969 A1 EP 3587969A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- compressor
- cooled interior
- evaporator
- designed
- 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.)
- Withdrawn
Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000003507 refrigerant Substances 0.000 claims abstract description 7
- 238000010257 thawing Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 7
- 230000003213 activating effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/02—Sensors detecting door opening
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer
Definitions
- the present invention relates to a refrigerator and / or freezer with a cooled interior, with a control device and with a refrigerant circuit, which comprises an evaporator, a compressor and a condenser, wherein a temperature sensor is provided, which is arranged, the temperature in the cooled To measure interior space, and wherein a controller is provided which is designed to regulate the temperature in the cooled interior to a desired value or to a desired value range in the cooling mode of the device, and wherein a blocking element is provided which is designed to be activated Condition to prevent or restrict the operation of the compressor.
- Such a refrigerator and / or freezer is from the DE 196 13 859 A1 known.
- the device known from this document has a first temperature sensor in the cooled interior, the value measured by this being used to regulate the temperature in the cooled interior by this temperature sensor providing the actual temperature value required for the regulation.
- a second temperature sensor is arranged on the evaporator, but this is irrelevant for the temperature control during normal operation of the device.
- Known devices furthermore have a blocking element, referred to as a timer, which prevents the compressor from operating in the activated state.
- This timer is activated according to specified criteria, e.g. when it is determined that 100 door openings have been registered.
- the evaporator is then defrosted, the compressor not being put into operation due to the activated timer even if the temperature measured by the first temperature sensor reaches or exceeds the switch-on temperature in the cooled interior during the defrosting process.
- the current temperature of the evaporator is measured by means of a further sensor arranged on the evaporator during this defrosting phase.
- the defrost time can thus be controlled so that the evaporator defrosts safely.
- a correction element deactivates the time element again during the defrosting phase and the system switches to normal control mode. Since the temperature measured by the first temperature sensor in the cooled interior exceeds the switch-on temperature, the compressor is put into operation again.
- the duration of the defrosting phase and thus also the duration in which the timer is activated thus depends on the temperature measured on the evaporator in the known device.
- the present invention is based on the object of developing a refrigerator and / or freezer of the type mentioned at the outset such that it has a simplified structure compared to the known device.
- the blocking element is designed in such a way that the time period in which the blocking element is in its activated state does not depend on the measured temperature in the cooled interior space nor on the evaporator temperature.
- the blocking element of the present invention is designed to completely prevent or at least restrict the operation of the compressor in its activated state. Such a restricted operation is to be understood to mean that the compressor is operated, but with an output which is lower than that in normal cooling operation.
- the defrost phase is therefore in contrast to that from the DE 196 13 859 A1 known procedure regardless of the evaporator temperature.
- the defrost phase is preferably carried out exclusively according to the time, i.e. for a certain period of time, which is independent of the temperature measured in the cooled interior and also independent of the evaporator temperature.
- a temperature sensor which is arranged on the evaporator, is dispensed with. Rather, a temperature sensor, which is arranged in the cooled interior and is used for temperature control in normal operation, is sufficient.
- Normal operation or “cooling operation” is understood to mean the operation of the device in which the controller regulates the temperature in the cooled interior to a setpoint or to a setpoint range.
- the device can be operated in a defrost mode in which this regulation is not carried out and in which the evaporator of the refrigerant circuit and / or other parts of the device are defrosted.
- the locking element can be designed in such a way that the period of time in which the locking element is in its activated state depends on the rule creation, i.e. the temperature setpoint and / or the room temperature and / or the number of openings in the cooled interior from a reference point in time, e.g. depends on the last defrost.
- the lower the controller position i.e. the smaller the temperature setpoint and / or the higher the room temperature, the greater the amount of ice to be defrosted.
- the invention also includes the dependence of the time period on one or more further or alternative parameters.
- a preferred embodiment of the invention is that the device does not have a temperature sensor for measuring the evaporator temperature. Such a temperature measurement is also not necessary because the evaporator temperature has no influence on the blocking element and thus on the defrosting duration.
- the device according to the invention is preferably designed such that during the defrosting phase there is no change at all in the predetermined duration of the defrost. A correction element for changing this period of time can therefore be dispensed with.
- the control device is preferably designed to deactivate the blocking element after the time period has elapsed and to operate the compressor at the end of the defrosting phase at a power level which depends on the temperature in the cooled interior when the defrosting phase is complete.
- the temperature sensor which measures the temperature of the air in the cooled interior.
- the compressor is then operated with a comparatively high output after the end of the defrost phase in order to achieve rapid cooling of the interior. The higher the measured temperature, the higher the performance.
- control device is designed to activate the compressor at a certain switch-on temperature in the cooling mode of the device and that the power level of the compressor depends on the value by which the temperature in the cooled interior exceeds the switch-on temperature when the defrosting phase is completed. The greater the difference between the switch-on temperature and the temperature measured after the defrost phase, the greater the power level at which the compressor is operated after the defrost phase has been completed.
- the control device can be designed to initiate the defrosting phase after a certain accumulated compressor running time and / or after reaching a certain number of openings in the cooled interior and / or depending on other parameters.
- the present invention further relates to a method for operating a refrigerator and / or freezer according to one of the preceding claims, wherein the operation of the compressor is prevented during the defrosting phase of the evaporator for a certain period of time, which is neither of the temperature in the cooled interior nor depends on the evaporator temperature.
- the time period depends on the creation of the rule and / or on the room temperature and / or on the number of openings in the cooled interior from a reference point in time.
- the exemplary embodiment relates to a refrigerator and / or freezer with a cooled interior, in which an air sensor is arranged, which measures the temperature in the cooled interior.
- the device also has a refrigerant circuit that includes an evaporator, a compressor, a condenser, and a throttle, through which refrigerant flows in this order when the compressor is in operation. After the throttle, the refrigerant returns to the evaporator, which is used to cool the interior.
- a refrigerant circuit that includes an evaporator, a compressor, a condenser, and a throttle, through which refrigerant flows in this order when the compressor is in operation. After the throttle, the refrigerant returns to the evaporator, which is used to cool the interior.
- a controller compares the temperature determined by the temperature sensor with a setpoint specified by the user on the controller position and activates or deactivates the compressor in cooling mode of the device depending on the difference between the two values, in order to keep the actual temperature at a setpoint or in a setpoint range.
- the cooling operation is interrupted and a defrost phase is initiated. This is done by activating a locking element that prevents the compressor from operating, i.e. the compressor is not in operation when the blocking element is activated. This state is maintained for a certain period of time.
- This period of time is independent of temperature values measured in the cooled interior during the defrosting phase.
- An evaporator sensor for measuring the temperature of the evaporator is not provided, so that the evaporator temperature also has no influence on the period of the defrosting phase.
- the compressor automatically switches to a higher level after the defrost phase, which has the advantage that the temperature in the cooled interior is lowered more quickly into the desired area than if the compressor is operated at a low power level.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Die vorliegende Erfindung betrifft ein Kühl- und/oder Gefriergerät mit einem gekühlten Innenraum, mit einer Steuereinrichtung sowie mit einem Kältemittelkreislauf, der einen Verdampfer, einen Kompressor und einen Verflüssiger umfasst, wobei ein Temperaturfühler vorgesehen ist, der angeordnet ist, die Temperatur in dem gekühlten Innenraum zu messen, und wobei ein Regler vorgesehen ist, der ausgebildet ist, im Kühlmodus des Gerätes die Regelung der Temperatur in dem gekühlten Innenraum auf einen Sollwert oder auf einen Sollwertbereich der Temperatur vorzunehmen, und wobei ein Sperrelement vorgesehen ist, das ausgebildet ist, in seinem aktivierten Zustand den Betrieb des Kompressors zu unterbinden oder einzuschränken, wobei das Sperrelement derart ausgebildet ist, dass die Zeitspanne, in der sich das Sperrelement in seinem aktivierten Zustand befindet, weder von der gemessenen Temperatur im gekühlten Innenraum noch von der Verdampfertemperatur abhängt.The present invention relates to a refrigerator and / or freezer with a cooled interior, with a control device and with a refrigerant circuit, which comprises an evaporator, a compressor and a condenser, wherein a temperature sensor is provided, which is arranged, the temperature in the cooled To measure interior space, and wherein a controller is provided which is designed to control the temperature in the cooled interior to a desired value or to a desired value range of the temperature in the cooling mode of the device, and wherein a blocking element is provided which is designed in to prevent or restrict the activated state of the operation of the compressor, the blocking element being designed in such a way that the period of time in which the blocking element is in its activated state does not depend on the measured temperature in the cooled interior space or on the evaporator temperature.
Description
Die vorliegende Erfindung betrifft ein Kühl- und/oder Gefriergerät mit einem gekühlten Innenraum, mit einer Steuereinrichtung sowie mit einem Kältemittelkreislauf, der einen Verdampfer, einen Kompressor und einen Verflüssiger umfasst, wobei ein Temperaturfühler vorgesehen ist, der angeordnet ist, die Temperatur in dem gekühlten Innenraum zu messen, und wobei ein Regler vorgesehen ist, der ausgebildet ist, im Kühlmodus des Gerätes die Regelung der Temperatur in dem gekühlten Innenraum auf einen Sollwert oder auf einen Sollwertbereich vorzunehmen, und wobei ein Sperrelement vorgesehen ist, das ausgebildet ist, in seinem aktivierten Zustand den Betrieb des Kompressors zu unterbinden oder einzuschränken.The present invention relates to a refrigerator and / or freezer with a cooled interior, with a control device and with a refrigerant circuit, which comprises an evaporator, a compressor and a condenser, wherein a temperature sensor is provided, which is arranged, the temperature in the cooled To measure interior space, and wherein a controller is provided which is designed to regulate the temperature in the cooled interior to a desired value or to a desired value range in the cooling mode of the device, and wherein a blocking element is provided which is designed to be activated Condition to prevent or restrict the operation of the compressor.
Ein derartiges Kühl- und/oder Gefriergerät ist aus der
Des Weiteren ist ein zweiter Temperaturfühler am Verdampfer angeordnet, der aber für die Temperaturregelung im Normalbetrieb des Gerätes keine Rolle spielt.Furthermore, a second temperature sensor is arranged on the evaporator, but this is irrelevant for the temperature control during normal operation of the device.
Das aus der
Dieses Zeitglied wird nach vorgegebenen Kriterien aktiviert, z.B. wenn festgestellt wird, dass 100 Türöffnungen registriert wurden. Sodann wird eine Abtauung des Verdampfers vorgenommen, wobei der Kompressor bedingt durch das aktivierte Zeitglied auch dann nicht in Betrieb genommen wird, wenn während des Abtauvorgangs in dem gekühlten Innenraum die durch den ersten Temperatursensor gemessene Temperatur die Einschalttemperatur erreicht oder überschreitet.This timer is activated according to specified criteria, e.g. when it is determined that 100 door openings have been registered. The evaporator is then defrosted, the compressor not being put into operation due to the activated timer even if the temperature measured by the first temperature sensor reaches or exceeds the switch-on temperature in the cooled interior during the defrosting process.
Mittels eines am Verdampfer angeordneten weiteren Sensors wird während dieser Abtauphase die aktuelle Temperatur des Verdampfers gemessen. Somit kann die Abtauzeit so gesteuert werden, dass der Verdampfer sicher abtaut.The current temperature of the evaporator is measured by means of a further sensor arranged on the evaporator during this defrosting phase. The defrost time can thus be controlled so that the evaporator defrosts safely.
Steigt diese unverhältnismäßig schnell an, etwa weil warmes Kühlgut eingelagert wurde, wird durch ein Korrekturglied das Zeitglied während der Abtauphase wieder deaktiviert und es wird in den normalen Regelbetrieb übergegangen. Da die durch den ersten Temperaturfühler gemessene Temperatur in dem gekühlten Innenraum die Einschalttemperatur übersteigt, wird der Kompressor wieder in Betrieb genommen.If this increases disproportionately quickly, for example because warm refrigerated goods have been stored, a correction element deactivates the time element again during the defrosting phase and the system switches to normal control mode. Since the temperature measured by the first temperature sensor in the cooled interior exceeds the switch-on temperature, the compressor is put into operation again.
Die Dauer der Abtauphase und damit auch die Dauer, in der das Zeitglied aktiviert ist, hängt somit bei dem bekannten Gerät von der am Verdampfer gemessenen Temperatur ab.The duration of the defrosting phase and thus also the duration in which the timer is activated thus depends on the temperature measured on the evaporator in the known device.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Kühl- und/oder Gefriergerät der eingangs genannten Art dahingehend weiterzubilden, dass dieses gegenüber dem bekannten Gerät einen vereinfachten Aufbau aufweist.The present invention is based on the object of developing a refrigerator and / or freezer of the type mentioned at the outset such that it has a simplified structure compared to the known device.
Diese Aufgabe wird durch ein Kühl- und/oder Gefriergerät mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a refrigerator and / or freezer with the features of claim 1.
Danach ist vorgesehen, dass das Sperrelement derart ausgebildet ist, dass die Zeitspanne, in der sich das Sperrelement in seinem aktivierten Zustand befindet, weder von der gemessenen Temperatur im gekühlten Innenraum noch von der Verdampfertemperatur abhängt. Das Sperrelement der vorliegenden Erfindung ist ausgebildet, in seinem aktivierten Zustand des Betrieb des Kompressor vollständig zu unterbinden oder zumindest einzuschränken. Unter einem solchen eingeschränkten Betrieb ist zu verstehen, dass der Kompressor zwar betrieben wird, allerdings mit einer Leistung, die unter der im normalen Kühlbetrieb liegt.According to this, it is provided that the blocking element is designed in such a way that the time period in which the blocking element is in its activated state does not depend on the measured temperature in the cooled interior space nor on the evaporator temperature. The blocking element of the present invention is designed to completely prevent or at least restrict the operation of the compressor in its activated state. Such a restricted operation is to be understood to mean that the compressor is operated, but with an output which is lower than that in normal cooling operation.
Die Abtauphase ist somit im Gegensatz zu der aus der
Vielmehr wird die Abtauphase vorzugsweise ausschließlich nach der Zeit vorgenommen, d.h. für eine bestimmte Zeitdauer, die unabhängig von der in dem gekühlten Innenraum gemessenen Temperatur sowie auch unabhängig von der Verdampfertemperatur ist.Rather, the defrost phase is preferably carried out exclusively according to the time, i.e. for a certain period of time, which is independent of the temperature measured in the cooled interior and also independent of the evaporator temperature.
Somit wird in bevorzugter Ausgestaltung auf einen Temperaturfühler verzichtet, der am Verdampfer angeordnet ist. Vielmehr genügt ein Temperaturfühler, der in dem gekühlten Innenraum angeordnet ist und der für die Temperaturregelung im Normalbetrieb dient. Unter "Normalbetrieb" oder "Kühlbetrieb" wird der Betrieb des Gerätes verstanden, in dem durch einen Regler eine Regelung der Temperatur in dem gekühlten Innenraum auf einen Sollwert oder auf einen Sollwertbereich erfolgt.Thus, in a preferred embodiment, a temperature sensor, which is arranged on the evaporator, is dispensed with. Rather, a temperature sensor, which is arranged in the cooled interior and is used for temperature control in normal operation, is sufficient. “Normal operation” or “cooling operation” is understood to mean the operation of the device in which the controller regulates the temperature in the cooled interior to a setpoint or to a setpoint range.
Des Weiteren kann das Gerät in einem Abtaubetrieb betrieben werden, in dem diese Regelung nicht erfolgt und in dem der Verdampfer des Kältemittelkreislaufs und/oder sonstige Teile des Gerätes abgetaut werden.Furthermore, the device can be operated in a defrost mode in which this regulation is not carried out and in which the evaporator of the refrigerant circuit and / or other parts of the device are defrosted.
Das Sperrelement kann derart ausgebildet sein, dass die Zeitspanne, in der sich das Sperrelement in seinem aktivierten Zustand befindet, von der Regelerstellung, d.h. von dem Temperatursollwert und/oder von der Raumtemperatur und/oder von der Anzahl der Öffnungen des gekühlten Innenraums ab einem Referenzzeitpunkt, z.B. ab der letzten Abtauung abhängt.The locking element can be designed in such a way that the period of time in which the locking element is in its activated state depends on the rule creation, i.e. the temperature setpoint and / or the room temperature and / or the number of openings in the cooled interior from a reference point in time, e.g. depends on the last defrost.
Je geringer die Reglerstellung, d.h. je kleiner der Temperatursollwert ist und/oder je höher die Raumtemperatur ist, desto größer ist die abzutauende Eismenge. Entsprechendes gilt für die Anzahl der Öffnungen der Tür oder eines sonstigen Verschlusselementes. Je mehr dieser Öffnungsvorgänge verzeichnet werden, desto mehr Feuchtigkeit wird in den gekühlten Innenraum eingetragen und desto mehr Eis muss abgetaut werden.The lower the controller position, i.e. the smaller the temperature setpoint and / or the higher the room temperature, the greater the amount of ice to be defrosted. The same applies to the number of openings in the door or another locking element. The more of these opening processes are recorded, the more moisture is introduced into the cooled interior and the more ice has to be defrosted.
Grundsätzlich ist von der Erfindung auch die Abhängigkeit der Zeitspanne von einem oder mehreren weiteren oder alternativen Parametern umfasst.Basically, the invention also includes the dependence of the time period on one or more further or alternative parameters.
Wie ausgeführt, besteht eine bevorzugte Ausgestaltung der Erfindung darin, dass das Gerät keinen Temperaturfühler zur Messung der Verdampfertemperatur aufweist. Eine solche Temperaturmessung ist auch nicht erforderlich, weil die Verdampfertemperatur auf das Sperrelement und somit auf die Abtaudauer keinen Einfluss hat.As stated, a preferred embodiment of the invention is that the device does not have a temperature sensor for measuring the evaporator temperature. Such a temperature measurement is also not necessary because the evaporator temperature has no influence on the blocking element and thus on the defrosting duration.
Des Weiteren ist vorzugsweise kein Korrekturglied vorhanden, das ausgebildet ist, die Abtauphase bzw. die Kompressorstehzeit zu verkürzen, wenn eine hohe Verdampfertemperatur gemessen wird.Furthermore, there is preferably no correction element which is designed to shorten the defrosting phase or the compressor standing time when a high evaporator temperature is measured.
Das erfindungsgemäße Gerät ist vorzugsweise derart ausgebildet, dass während der Abtauphase überhaupt keine Änderung der vorgegebenen Zeitdauer der Abtauung erfolgt. Auf ein Korrekturglied zur Änderung dieser Zeitdauer kann daher verzichtet werden.The device according to the invention is preferably designed such that during the defrosting phase there is no change at all in the predetermined duration of the defrost. A correction element for changing this period of time can therefore be dispensed with.
Die Steuereinrichtung ist vorzugsweise ausgebildet, das Sperrelement nach Ablauf der Zeitspanne zu deaktivieren und den Kompressor nach Abschluss der Abtauphase mit einer Leistungsstufe zu betreiben, die von der Temperatur in dem gekühlten Innenraum bei Abschluss der Abtauphase abhängt.The control device is preferably designed to deactivate the blocking element after the time period has elapsed and to operate the compressor at the end of the defrosting phase at a power level which depends on the temperature in the cooled interior when the defrosting phase is complete.
Sollte die Temperatur in dem gekühlten Innenraum somit während der Abtauphase sehr stark ansteigen, etwa weil warmes Gut eingelegt wurde, wird dies durch den Temperaturfühler erfasst, der die Temperatur der Luft in dem gekühlten Innenraum misst. Der Kompressor wird sodann nach dem Abschluss der Abtauphase mit einer vergleichsweise hohen Leistung betrieben, um eine schnelle Abkühlung des Innenraums zu erreichen. Dabei kann die Leistung umso höher sein, je größer die gemessene Temperatur ist.Should the temperature in the cooled interior rise very strongly during the defrosting phase, for example because warm goods have been inserted, this is detected by the temperature sensor, which measures the temperature of the air in the cooled interior. The compressor is then operated with a comparatively high output after the end of the defrost phase in order to achieve rapid cooling of the interior. The higher the measured temperature, the higher the performance.
Vorzugsweise ist vorgesehen, dass die Steuereinrichtung ausgebildet ist, im Kühlbetrieb des Gerätes den Kompressor bei einer bestimmten Einschalttemperatur zu aktivieren und dass die Leistungsstufe des Kompressors davon abhängt, um welchen Wert die Temperatur in dem gekühlten Innenraum bei Abschluss der Abtauphase die Einschalttemperatur übersteigt. Je größer die Differenz zwischen der Einschalttemperatur und der nach der Abtauphase gemessenen Temperatur ist, desto größer ist die Leistungsstufe, mit der der Kompressor nach dem Abschluss der Abtauphase betrieben wird.It is preferably provided that the control device is designed to activate the compressor at a certain switch-on temperature in the cooling mode of the device and that the power level of the compressor depends on the value by which the temperature in the cooled interior exceeds the switch-on temperature when the defrosting phase is completed. The greater the difference between the switch-on temperature and the temperature measured after the defrost phase, the greater the power level at which the compressor is operated after the defrost phase has been completed.
Die Steuereinrichtung kann ausgebildet sein, um nach einer bestimmten akkumulierten Kompressorlaufzeit und/oder nach Erreichen einer bestimmten Anzahl von Öffnungen des gekühlten Innenraums und/oder in Abhängigkeit sonstiger Parameter die Abtauphase einzuleiten.The control device can be designed to initiate the defrosting phase after a certain accumulated compressor running time and / or after reaching a certain number of openings in the cooled interior and / or depending on other parameters.
Die vorliegende Erfindung betrifft des Weiteren ein Verfahren zum Betreiben eines Kühl- und/oder Gefriergerät nach einem der vorhergehenden Ansprüche, wobei der Betrieb des Kompressors während der Abtauphase des Verdampfers für eine bestimmte Zeitspanne unterbunden wird, die weder von der Temperatur in dem gekühlten Innenraum noch von der Verdampfertemperatur abhängt.The present invention further relates to a method for operating a refrigerator and / or freezer according to one of the preceding claims, wherein the operation of the compressor is prevented during the defrosting phase of the evaporator for a certain period of time, which is neither of the temperature in the cooled interior nor depends on the evaporator temperature.
Vorzugsweise ist vorgesehen, dass die Zeitspanne von der Regelerstellung und/oder von der Raumtemperatur und/oder von der Anzahl der Öffnungen des gekühlten Innenraums ab einem Referenzzeitpunkt abhängt.It is preferably provided that the time period depends on the creation of the rule and / or on the room temperature and / or on the number of openings in the cooled interior from a reference point in time.
Weiterhin kann vorgesehen sein, dass die Temperatur in dem gekühlten Innenraum nach der Abtauphase des Verdampfers gemessen wird und dass der Kompressor nach der Abtauphase mit einer Leistungsstufe betrieben wird, die von der Differenz der nach der Abtauphase gemessenen Temperatur und der genannten Einschalttemperatur abhängt. So ist es möglich, auch bei einer starken Erwärmung des gekühlten Innenraums während der Abtauphase eine rasche Abkühlung des gekühlten Innenraums durch den bei hoher Leistung betriebenen Kompressor zu erzielen.Provision can furthermore be made for the temperature in the cooled interior to be measured after the defrosting phase of the evaporator and for the compressor to be operated after the defrosting phase with a power level which depends on the difference between the temperature measured after the defrosting phase and the switch-on temperature mentioned. It is thus possible to achieve rapid cooling of the cooled interior even when the cooled interior heats up strongly during the defrosting phase by means of the compressor operated at high power.
An dieser Stelle wird darauf hingewiesen, dass die Begriffe "ein" und "eine" nicht zwingend auf genau eines der Elemente verweisen, wenngleich dies eine mögliche Ausführung darstellt, sondern auch eine Mehrzahl der Elemente bezeichnen können. Ebenso schließt die Verwendung des Plurals auch das Vorhandensein des fraglichen Elementes in der Einzahl ein und umgekehrt umfasst der Singular auch mehrere der fraglichen Elemente.At this point, it is pointed out that the terms "a" and "an" do not necessarily refer to exactly one of the elements, although this is a possible embodiment, but can also denote a majority of the elements. Likewise, the use of the plural also includes the existence of the element in question in the singular form and, conversely, the singular also includes several of the elements in question.
Weitere Einzelheiten und Vorteile werden anhand eines im Folgenden erläuterten Ausführungsbeispiel näher erläutert.Further details and advantages are explained in more detail using an exemplary embodiment explained below.
Das Ausführungsbeispiel betrifft ein Kühl- und/oder Gefriergerät mit einem gekühlten Innenraum, in dem ein Luftfühler angeordnet ist, der die Temperatur in dem gekühlten Innenraum misst.The exemplary embodiment relates to a refrigerator and / or freezer with a cooled interior, in which an air sensor is arranged, which measures the temperature in the cooled interior.
Das Gerät weist des Weiteren einen Kältemittelkreislauf auf, der einen Verdampfer, einen Kompressor, einen Verflüssiger und eine Drossel umfasst, die in dieser Reihenfolge von Kältemittel durchströmt werden, wenn der Kompressor in Betrieb ist. Nach der Drossel gelangt das Kältemittel wieder in den Verdampfer, der zur Kühlung des Innenraums dient.The device also has a refrigerant circuit that includes an evaporator, a compressor, a condenser, and a throttle, through which refrigerant flows in this order when the compressor is in operation. After the throttle, the refrigerant returns to the evaporator, which is used to cool the interior.
Ein Regler vergleicht die von dem Temperaturfühler ermittelte Temperatur mit einem durch die Reglerstellung nutzerseitig vorgegebenen Sollwert und aktiviert oder deaktiviert im Kühlbetrieb des Gerätes in Abhängigkeit von der Differenz beider Werte den Kompressor, um die tatsächliche Temperatur auf einem Sollwert oder in einem Sollwertbereich zu halten.A controller compares the temperature determined by the temperature sensor with a setpoint specified by the user on the controller position and activates or deactivates the compressor in cooling mode of the device depending on the difference between the two values, in order to keep the actual temperature at a setpoint or in a setpoint range.
Nach einer bestimmten Kompressorlaufzeit oder nach einer bestimmten Anzahl von Türöffnungen wird der Kühlbetrieb unterbrochen und eine Abtauphase eingeleitet. Dies erfolgt durch die Aktivierung eines Sperrelementes, das den Betrieb des Kompressors unterbindet, d.h. bei aktiviertem Sperrelement ist der Kompressor nicht in Betrieb. Dieser Zustand wird für eine bestimmte Zeitspanne aufrechterhalten.After a certain compressor running time or after a certain number of door openings, the cooling operation is interrupted and a defrost phase is initiated. This is done by activating a locking element that prevents the compressor from operating, i.e. the compressor is not in operation when the blocking element is activated. This state is maintained for a certain period of time.
Diese Zeitspanne ist von während der Abtauphase gemessenen Temperaturwerten in dem gekühlten Innenraum unabhängig. Ein Verdampferfühler zur Messung der Temperatur des Verdampfers ist nicht vorgesehen, so dass auch die Verdampfertemperatur keinen Einfluss auf die Zeitspanne der Abtauphase hat.This period of time is independent of temperature values measured in the cooled interior during the defrosting phase. An evaporator sensor for measuring the temperature of the evaporator is not provided, so that the evaporator temperature also has no influence on the period of the defrosting phase.
Nach Ablauf der Zeitspanne, wird wieder zurück in den Kühlbetrieb geschaltet, in dem eine herkömmliche Temperaturregelung erfolgt.After the period has elapsed, the system switches back to cooling mode, in which conventional temperature control takes place.
Wird durch den genannten Luftfühler festgestellt, dass die Temperatur in dem gekühlten Innenraum um einen definierten Wert über dem festgelegten Einschaltwert für den Kompressor liegt, schaltet der Kompressor nach der Abtauphase automatisch in eine höhere Stufe, was den Vorteil mit sich bringt, dass die Temperatur in dem gekühlten Innenraum schneller wieder in dem gewünschten Bereich gesenkt wird, als wenn der Kompressor mit einer demgegenüber geringen Leistungsstufe betrieben wird.If it is determined by the air sensor mentioned that the temperature in the cooled interior is a defined value above the specified switch-on value for the compressor, the compressor automatically switches to a higher level after the defrost phase, which has the advantage that the temperature in the cooled interior is lowered more quickly into the desired area than if the compressor is operated at a low power level.
Claims (9)
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DE102018115866.1A DE102018115866A1 (en) | 2018-06-29 | 2018-06-29 | Refrigerator and / or freezer |
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EP3587969A1 true EP3587969A1 (en) | 2020-01-01 |
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EP19182525.6A Withdrawn EP3587969A1 (en) | 2018-06-29 | 2019-06-26 | Fridge and/or freezer |
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Citations (5)
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US5564286A (en) * | 1994-03-24 | 1996-10-15 | Kabushiki Kaisha Toshiba | Refrigerator defrost control apparatus and method |
DE19613859A1 (en) | 1996-04-06 | 1997-10-09 | Aeg Hausgeraete Gmbh | Refrigerator and freezer |
US5924298A (en) * | 1996-10-15 | 1999-07-20 | Samsung Electronics Co., Ltd. | Control method of defrosting operation of a refrigerator |
DE10221903A1 (en) * | 2002-05-16 | 2003-12-04 | Bsh Bosch Siemens Hausgeraete | Freezer with defrost indicator |
US20090241561A1 (en) * | 2008-03-28 | 2009-10-01 | Samsung Electronics Co., Ltd. | Refrigerator and defrost control method thereof |
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US4327556A (en) * | 1980-05-08 | 1982-05-04 | General Electric Company | Fail-safe electronically controlled defrost system |
US6725680B1 (en) * | 2002-03-22 | 2004-04-27 | Whirlpool Corporation | Multi-compartment refrigerator control algorithm for variable speed evaporator fan motor |
KR102220911B1 (en) * | 2014-01-06 | 2021-02-25 | 엘지전자 주식회사 | Refrigerator and home appliance |
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2018
- 2018-06-29 DE DE102018115866.1A patent/DE102018115866A1/en active Pending
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2019
- 2019-06-26 EP EP19182525.6A patent/EP3587969A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US5564286A (en) * | 1994-03-24 | 1996-10-15 | Kabushiki Kaisha Toshiba | Refrigerator defrost control apparatus and method |
DE19613859A1 (en) | 1996-04-06 | 1997-10-09 | Aeg Hausgeraete Gmbh | Refrigerator and freezer |
US5924298A (en) * | 1996-10-15 | 1999-07-20 | Samsung Electronics Co., Ltd. | Control method of defrosting operation of a refrigerator |
DE10221903A1 (en) * | 2002-05-16 | 2003-12-04 | Bsh Bosch Siemens Hausgeraete | Freezer with defrost indicator |
US20090241561A1 (en) * | 2008-03-28 | 2009-10-01 | Samsung Electronics Co., Ltd. | Refrigerator and defrost control method thereof |
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