EP1636530B1 - Refrigeration device comprising controlled de-humidification - Google Patents

Refrigeration device comprising controlled de-humidification Download PDF

Info

Publication number
EP1636530B1
EP1636530B1 EP04739760.9A EP04739760A EP1636530B1 EP 1636530 B1 EP1636530 B1 EP 1636530B1 EP 04739760 A EP04739760 A EP 04739760A EP 1636530 B1 EP1636530 B1 EP 1636530B1
Authority
EP
European Patent Office
Prior art keywords
evaporator
ventilator
refrigeration device
switched
fan
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
EP04739760.9A
Other languages
German (de)
French (fr)
Other versions
EP1636530A1 (en
Inventor
Helmut Konopa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP1636530A1 publication Critical patent/EP1636530A1/en
Application granted granted Critical
Publication of EP1636530B1 publication Critical patent/EP1636530B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0251—Compressor control by controlling speed with on-off operation
    • 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
    • F25B2600/11—Fan speed control
    • F25B2600/112—Fan speed control of evaporator fans
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/02—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • 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
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/041—Treating air flowing to refrigeration compartments by purification
    • F25D2317/0411—Treating air flowing to refrigeration compartments by purification by dehumidification
    • 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
    • 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
    • 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 no-frost refrigerator and an operating method for such a device.
  • an evaporator is arranged in a separate chamber from a storage compartment for refrigerated goods, and a heat exchange between the chamber and the storage compartment through which the storage compartment is cooled takes place by using a fan on the evaporator cooled and dried air in the storage compartment blown and relatively warm, humid air from the storage compartment is sucked into the chamber.
  • the storage compartment is not only cooled but also dehumidified. The moisture settles on the evaporator. This dehumidification prevents condensate from settling on storage areas and refrigerated goods in the storage compartment under critical climatic conditions, in particular when the refrigerator is used in a warm environment with high humidity.
  • this advantage can turn into a disadvantage at less critical environmental conditions when stored food is dried out by the intensive dehumidification.
  • the US 2,549,547 discloses a refrigerator according to the preamble of claim 1, wherein an average circulation of a fan in a switched-on phase of the evaporator of the refrigeration device is made variable.
  • the US 2,416,354 discloses a refrigerator with a refrigeration cycle and a coolable by means of the refrigeration cycle interior.
  • cooled air is blown through tubes in the interior.
  • a circulation of the cooled air takes place via a motor-driven fan depending on the humidity in the interior.
  • WO 03/054462 A1 discloses a refrigerator in accordance with Article 54 (3) EPC.
  • the circulation rate of the fan of such a refrigeration appliance By varying the circulation rate of the fan of such a refrigeration appliance, the heat flow occurring between the two at a given temperature difference between the storage compartment of the refrigeration appliance and the evaporator is simultaneously changed. That is, a reduction in the recirculation performance leads to a reduced heat exchange and thus to a greater cooling of the evaporator. This increased cooling causes a more intense drying of passing the evaporator on the air.
  • the reduced circulation efficiency when the evaporator and fan are turned on, causes the cooling of the storage compartment to be slower than at a higher circulation rate, thus prolonging the on-time of the evaporator.
  • This extension compensates for the reduced recirculation capacity and causes more moisture to be trapped during a switch-on phase of the evaporator at low recirculation performance than at high.
  • a variable circulation capacity of the evaporator is realized in that the fan is made temporarily switched off in the switched-on phase of the evaporator.
  • a control circuit for controlling the operation of the evaporator and the fan which is arranged to intermittently operate the fan when the evaporator is switched on and thereby to throttle its mean circulation performance compared to a continuous operation.
  • control circuit is coupled to at least one climate sensor for detecting a climate parameter such as the ambient temperature of the refrigerator, the humidity of the ambient air or the humidity of the air in the interior and set to the duty cycle in dependence on the at least one of such a sensor to control recorded climate parameters.
  • the fan in the on-phase of the evaporator, is adjustable to different non-zero speeds to adjust the average circulation power to the needs.
  • a selector switch may be provided which allows a user, a control circuit of the fan specify a desired speed of the same, or the control circuit may be coupled to at least one air conditioning sensor to automatically control the circulation capacity of the fan based on a detected by this sensor climatic parameter and a predetermined target value of humidity.
  • the estimation is preferably an air humidity measurement made directly in the storage compartment concerned. Then it is possible in particular to take into account influences of the operation of the evaporator and the fan on the humidity in the storage compartment in the selection of the circulation rate. In principle, however, it is also possible to estimate the humidity in the storage compartment on the basis of correlated variables such as temperature and humidity of the environment and to select the circulation rate as a function of the result of the estimation.
  • FIG. 1 is a schematic representation of a combination refrigerator, to which the present invention is implemented.
  • a refrigerated compartment 1 and a freezer compartment 2 form two temperature zones of the refrigerator.
  • a refrigerant circuit comprises a compressor 3, which pumps a compressed refrigerant sequentially through two evaporators 4, 5 of the freezer compartment 2 and the refrigerating compartment 1, and a heat exchanger 6, which passes through the refrigerant in the evaporators 4, 5, before returning to the Compressor 3 enters.
  • the cooling compartment 1 associated evaporator 5 is housed in a separated from the refrigerating compartment 1 by a thermally insulating wall 7 chamber 8.
  • the chamber 8 communicates with the refrigerated compartment 1 via air inlet and - outlets, in one of which a fan 9 is arranged for forced circulation of air between the chamber 8 and the refrigerating compartment 1.
  • a control circuit 10 is connected to a arranged in the cooling compartment temperature sensor 12 and control lines to the compressor 3 and the fan 9 and is capable of the compressor 3_und the fan 9 and indirectly via the compressor 3, the evaporator 4, 5 - a temperature detected by the temperature sensor 12 on or off.
  • the control circuit 10 is further connected to an air humidity sensor 13, which is arranged in the refrigerating compartment 1.
  • At the control circuit 10 may be provided a user operable selector switch 11, which allows to set a target value for the humidity in the refrigerator compartment 1.
  • the humidity sensor 13 in the cooling compartment 1 can be replaced as a variant by a humidity sensor outside the cooling compartment and / or a sensor for the ambient temperature of the refrigerator, since their measurements allow a conclusion on the humidity in the refrigerator compartment 1.
  • FIG. 2 illustrates the operation of the control circuit 10 based on the time profiles of a plurality of operating parameters of the refrigeration device.
  • the curve 3 ' indicates the operating state of the compressor 3. At time t 0 it is off; as soon as the temperature sensor 12 registers the exceeding of an upper limit temperature, at time t 1 , it is switched on until it falls below a lower limit temperature in the cooling compartment 1 until time t 2 . From this time, the cooling compartment 1 is heated again until at t 4, a new switch-on of the compressor 3 begins.
  • the humidity detected in the cooling compartment 1 by the sensor 13 is at a constant, low level.
  • the fan 9 also starts operating at the time t 1 , as represented by a curve 9 '.
  • the temperature of the evaporator 5, represented by a curve 5 ' goes back from a rest value T 0 to a value T 1 .
  • Moisture from the air circulated by the fan 9 settles on the evaporator 5, so that the air humidity 13 'slowly decreases until the time t 2 of switching off the fan 9.
  • the moisture 13 ' rises sharply, for example, because the door of the refrigerator is opened and warm, moist air from the outside penetrates.
  • the control circuit 10 recognizes that a more intensive drying is required and operates the fan 9, when at the time t 4, the compressor 3 is turned on again, intermittently with a duty cycle, which is selected in dependence on the detected at time t 4 humidity. This leads to a lower average Circulating power of the fan 9 as during the time interval t 1 to t 2 , so that the heat exchange between the evaporator 5 and the refrigerating compartment 1 is slowed down.
  • the turn-on time t 4 to t 5 is therefore longer than the time t 1 to t 2 , and the temperature T 2 of the evaporator 5 reached during this period is lower than T 1 .
  • This lower temperature T 2 causes the air flowing past the evaporator 5 to be more effectively dried, and due to the extended duty cycle of the compressor 3, finally, a low humidity value is again achieved.
  • the duty cycle with which the control circuit 10 operates the fan during the switch-on phases of the evaporator is in the simplest case a step function which has a value of 1 for low humidities and a non-zero value for high humidities; it is also possible to use a step function with a multiplicity of values of the duty cycle decreasing with increasing humidity or a continuous function for the control.
  • the control circuit 10 is designed to set different speeds of the fan 9 as a function of a measured air humidity.
  • the operation of this embodiment is in FIG. 3 shown.
  • the humidity is low, in a switch-on phase of the evaporator 4, the fan 9 runs at maximum speed, and the time courses of on and off phases, evaporator temperature and humidity are the same as in the case of FIG. 2 , As a result, the diagram differs FIG. 3 not until the time t 4 of the FIG. 2 , At time t 4 , the control circuit 10 selects a speed of the fan 9, which is smaller than its maximum speed based on the measured at this time high humidity value.
  • the humidity continuously decreases, and accordingly the speed of the fan 9, which selects the control circuit 10 based on the measured humidity, and with increasing circulation capacity of the fan 9, the temperature of the evaporator 5 increases to a large Part of the time interval t 4 to t 5 continuously.
  • FIGS. 2 and 3 In the FIGS. 2 and 3 is shown the case of rapid dehydration, in which a single switch-on phase t 4 to t 5 is sufficient to the humidity in the refrigerator compartment to a Target value.
  • the drying process can also be distributed over several successive switch-on phases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Drying Of Solid Materials (AREA)
  • Air Conditioning Control Device (AREA)

Description

Die vorliegende Erfindung betrifft ein No-Frost-Kältegerät und ein Betriebsverfahren für ein solches Gerät.The present invention relates to a no-frost refrigerator and an operating method for such a device.

Bei derartigen Kältegeräten ist ein Verdampfer in einer von einem Lagerfach für Kühlgut getrennten Kammer angeordnet, und ein Wärmeaustausch zwischen der Kammer und dem Lagerfach, durch den das Lagerfach gekühlt wird, erfolgt, indem mit Hilfe eines Ventilators am Verdampfer gekühlte und getrocknete Luft in das Lagerfach geblasen und relativ warme, feuchte Luft aus dem Lagerfach in die Kammer gesaugt wird. Dabei wird das Lagerfach nicht nur abgekühlt, sondern auch entfeuchtet. Die Feuchtigkeit schlägt sich am Verdampfer nieder. Durch diese Entfeuchtung wird verhindert, dass sich unter kritischen klimatischen Verhältnissen, insbesondere bei Einsatz des Kältegeräts in warmer Umgebung bei hoher Luftfeuchtigkeit, Kondenswasser auf Abstellflächen und Kühlgut im Lagerfach niederschlägt. Dieser Vorteil kann sich aber bei weniger kritischen Umgebungsbedingungen in einen Nachteil verwandeln, wenn eingelagerte Lebensmittel durch die intensive Entfeuchtung ausgetrocknet werden.In such refrigerators, an evaporator is arranged in a separate chamber from a storage compartment for refrigerated goods, and a heat exchange between the chamber and the storage compartment through which the storage compartment is cooled takes place by using a fan on the evaporator cooled and dried air in the storage compartment blown and relatively warm, humid air from the storage compartment is sucked into the chamber. The storage compartment is not only cooled but also dehumidified. The moisture settles on the evaporator. This dehumidification prevents condensate from settling on storage areas and refrigerated goods in the storage compartment under critical climatic conditions, in particular when the refrigerator is used in a warm environment with high humidity. However, this advantage can turn into a disadvantage at less critical environmental conditions when stored food is dried out by the intensive dehumidification.

Die US 2,549,547 offenbart ein Kältegerät gemäß dem Oberbegriff des Anspruchs 1, bei dem eine mittlere Umwälzung eines Ventilators in einer eingeschalteten Phase des Verdampfers des Kältegerätes variabel gemacht wird.The US 2,549,547 discloses a refrigerator according to the preamble of claim 1, wherein an average circulation of a fan in a switched-on phase of the evaporator of the refrigeration device is made variable.

Die US 2,416,354 offenbart ein Kältegerät mit einem Kältekreislauf und einem mittels des Kältekreislaufs kühlbaren Innenraum. Mittels des Kältekreislaufs gekühlte Luft wird über Röhren in den Innenraum geblasen. Eine Zirkulation der gekühlten Luft erfolgt über einen motorgetrieben Lüfter in Abhängigkeit von der Luftfeuchtigkeit im Innenraum.
Es besteht daher Bedarf nach einem No-Frost-Kältegerät und einem Betriebsverfahren für ein solches Kältegerät, die eine flexible Anpassung an die klimatischen Bedingungen in der Umgebung des Kältegerätes ermöglichen.The US 2,416,354 discloses a refrigerator with a refrigeration cycle and a coolable by means of the refrigeration cycle interior. By means of the refrigeration cycle cooled air is blown through tubes in the interior. A circulation of the cooled air takes place via a motor-driven fan depending on the humidity in the interior.
There is therefore a need for a no-frost refrigeration device and an operating method for such a refrigeration device, which allow flexible adaptation to the climatic conditions in the vicinity of the refrigeration device.

WO 03/054462 A1 offenbart ein Kältegerät gemäß Artikel 54(3) EPÜ. WO 03/054462 A1 discloses a refrigerator in accordance with Article 54 (3) EPC.

Die Aufgabe wird gelöst durch ein Kältegerät mit den Merkmalen des Anspruches 1 bzw ein Verfahren mit den Merkmalen des Anspruches 6.The object is achieved by a refrigeration device having the features of claim 1 or a method having the features of claim 6.

Indem die Umwälzleistung des Ventilators eines solchen Kältegerätes variiert wird, wird gleichzeitig auch der bei einer gegebenen Temperaturdifferenz zwischen dem Lagerfach des Kältegerätes und dem Verdampfer auftretende Wärmefluß zwischen den beiden verändert. Das heißt, eine Verringerung der Umwälzleistung führt zu einem verringerten Wärmeaustausch und damit zu einer stärkeren Abkühlung des Verdampfers. Diese verstärkte Abkühlung bewirkt eine intensivere Trocknung der am Verdampfer vorbeistreichenden Luft. Gleichzeitig bewirkt die verringerte Umwälzleistung, dass, wenn Verdampfer und Ventilator eingeschaltet sind, die Abkühlung des Lagerfaches langsamer vonstatten geht als bei einer höheren Umwälzleistung, so dass sich die Einschaltdauer des Verdampfers verlängert. Diese Verlängerung kompensiert die verringerte Umwälzleistung und führt dazu, dass im Laufe einer Einschaltphase des Verdampfers bei niedriger Umwälzleistung mehr Feuchtigkeit abgefangen wird als bei hoher.By varying the circulation rate of the fan of such a refrigeration appliance, the heat flow occurring between the two at a given temperature difference between the storage compartment of the refrigeration appliance and the evaporator is simultaneously changed. That is, a reduction in the recirculation performance leads to a reduced heat exchange and thus to a greater cooling of the evaporator. This increased cooling causes a more intense drying of passing the evaporator on the air. At the same time, the reduced circulation efficiency, when the evaporator and fan are turned on, causes the cooling of the storage compartment to be slower than at a higher circulation rate, thus prolonging the on-time of the evaporator. This extension compensates for the reduced recirculation capacity and causes more moisture to be trapped during a switch-on phase of the evaporator at low recirculation performance than at high.

Eine variable Umwälzleistung des Verdampfers wird dadurch realisiert, dass der Ventilator in der eingeschalteten Phase des Verdampfers zeitweilig ausschaltbar gemacht ist. Es ist eine Steuerschaltung zum Steuern des Betriebes des Verdampfers und des Ventilators vorgesehen, die eingerichtet ist, um bei eingeschaltetem Verdampfer den Ventilator intermittierend zu betreiben und dadurch dessen mittlere Umwälzleistung im Vergleich zu einem kontinuierlichen Betrieb zu drosseln.A variable circulation capacity of the evaporator is realized in that the fan is made temporarily switched off in the switched-on phase of the evaporator. There is provided a control circuit for controlling the operation of the evaporator and the fan, which is arranged to intermittently operate the fan when the evaporator is switched on and thereby to throttle its mean circulation performance compared to a continuous operation.

Es kann ein Wählschalter an dem Kältegerät vorgesehen sein, der es einem Benutzer ermöglicht, ein gewünschtes Tastverhältnis für den intermittierenden Betrieb des Ventilators einzustellen und so manuell die Trocknungswirkung des Kältegerätes an den Bedarf anzupassen. Bei einer komfortableren Ausgestaltung ist die Steuerschaltung an wenigstens einen Klimasensor zum Erfassen eines Klimaparameters wie etwa der Umgebungstemperatur des Kältegerätes, der Feuchtigkeit der Umgebungsluft oder der Feuchtigkeit der Luft im Innenraum gekoppelt und eingerichtet, um das Tastverhältnis in Abhängigkeit von dem wenigstens einen von einem solchen Sensor erfassten Klimaparameter zu steuern.There may be provided a selector switch on the refrigeration device, which allows a user to set a desired duty cycle for the intermittent operation of the fan and so manually adjust the drying effect of the refrigerator to the needs. In a more comfortable embodiment, the control circuit is coupled to at least one climate sensor for detecting a climate parameter such as the ambient temperature of the refrigerator, the humidity of the ambient air or the humidity of the air in the interior and set to the duty cycle in dependence on the at least one of such a sensor to control recorded climate parameters.

Einer anderen Ausgestaltung zufolge ist der Ventilator in der eingeschalteten Phase des Verdampfers auf unterschiedliche nichtverschwindende Drehzahlen einstellbar, um die mittlere Umwälzleistung dem Bedarf anzupassen. Auch hier kann ein Wählschalter vorgesehen sein, der es einem Benutzer erlaubt, einer Steuerschaltung des Ventilators eine gewünschte Drehzahl desselben vorzugeben, oder die Steuerschaltung kann an wenigstens einen Klimasensor gekoppelt sein, um die Umwälzleistung des Ventilators anhand eines von diesem Sensor erfassten Klimaparameters und einem vorgegebenen Zielwert der Luftfeuchtigkeit automatisch zu steuern.In another embodiment, in the on-phase of the evaporator, the fan is adjustable to different non-zero speeds to adjust the average circulation power to the needs. Again, a selector switch may be provided which allows a user, a control circuit of the fan specify a desired speed of the same, or the control circuit may be coupled to at least one air conditioning sensor to automatically control the circulation capacity of the fan based on a detected by this sensor climatic parameter and a predetermined target value of humidity.

Gegenstand der Erfindung ist auch ein Verfahren zum Betreiben eines Kältegerätes der oben beschriebenen Art, mit den Schritten:

  1. a) Abschätzen eines Feuchtigkeitswertes in dem Lagerfach des Kältegerätes,
  2. b) Wählen einer Umwälzleistung für den Ventilators in Abhängigkeit von dem abgeschätzten Feuchtigkeitswert;
  3. c) Betreiben des Ventilators mit der gewählten Umwälzleistung.
The invention also provides a method for operating a refrigerator of the type described above, comprising the steps of:
  1. a) estimating a moisture value in the storage compartment of the refrigerator,
  2. b) selecting a circulating capacity for the fan in dependence on the estimated humidity value;
  3. c) Operating the fan with the selected circulation capacity.

Vorzugsweise handelt es sich bei der Schätzung um eine direkt im betroffenen Lagerfach vorgenommene Luftfeuchtigkeitsmessung. Dann ist es insbesondere möglich, Einflüsse des Betriebs des Verdampfers und des Ventilators auf die Luftfeuchtigkeit im Lagerfach bei der Auswahl der Umwälzleistung zu berücksichtigen. Prinzipiell ist es aber auch möglich, die Luftfeuchtigkeit im Lagerfach anhand von mit ihr korrelierten Größen wie etwa Temperatur und Luftfeuchtigkeit der Umgebung abzuschätzen und die Umwälzleistung in Abhängigkeit vom Ergebnis der Abschätzung zu wählen.The estimation is preferably an air humidity measurement made directly in the storage compartment concerned. Then it is possible in particular to take into account influences of the operation of the evaporator and the fan on the humidity in the storage compartment in the selection of the circulation rate. In principle, however, it is also possible to estimate the humidity in the storage compartment on the basis of correlated variables such as temperature and humidity of the environment and to select the circulation rate as a function of the result of the estimation.

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

  • Figur 1 eine schematische Darstellung eines erfindungsgemäßen No-Frost-Kältegerätes,
  • Figur 2 ein Zeitdiagramm des Betriebes von Verdampfer und Ventilator gemäß einer ersten Ausgestaltung der Erfindung; und
  • Figur 3 ein Zeitdiagramm analog dem der Figur 2 für eine zweite Ausgestaltung der Erfindung.
Further features and advantages of the invention will become apparent from the following description of embodiments with reference to the accompanying figures. Show it:
  • FIG. 1 a schematic representation of a no-frost refrigeration device according to the invention,
  • FIG. 2 a timing diagram of the operation of evaporator and fan according to a first embodiment of the invention; and
  • FIG. 3 a time diagram analogous to that of FIG. 2 for a second embodiment of the invention.

Figur 1 ist eine schematische Darstellung eines Kombinations-Kältegerätes, an dem die vorliegende Erfindung verwirklicht ist. Ein Kühlfach 1 und ein Gefrierfach 2 bilden zwei Temperaturzonen des Kältegerätes. Ein Kältemittelkreislauf umfasst einen Verdichter 3, der ein verdichtetes Kältemittel nacheinander durch zwei Verdampfer 4, 5 des Gefrierfaches 2 bzw. des Kühlfaches 1 pumpt, sowie einen Wärmetauscher 6, den das in den Verdampfern 4, 5 entspannte Kältemittel durchläuft, bevor es wieder in den Verdichter 3 eintritt. Der dem Kühlfach 1 zugeordnete Verdampfer 5 ist in einer von dem Kühlfach 1 durch eine thermisch isolierende Wand 7 abgetrennten Kammer 8 untergebracht. Die Kammer 8 kommuniziert mit dem Kühlfach 1 über Lufteintritts- und - austrittsöffnungen, wobei in einer von diesen ein Ventilator 9 zum Zwangsumwälzen von Luft zwischen der Kammer 8 und dem Kühlfach 1 angeordnet ist. FIG. 1 is a schematic representation of a combination refrigerator, to which the present invention is implemented. A refrigerated compartment 1 and a freezer compartment 2 form two temperature zones of the refrigerator. A refrigerant circuit comprises a compressor 3, which pumps a compressed refrigerant sequentially through two evaporators 4, 5 of the freezer compartment 2 and the refrigerating compartment 1, and a heat exchanger 6, which passes through the refrigerant in the evaporators 4, 5, before returning to the Compressor 3 enters. The cooling compartment 1 associated evaporator 5 is housed in a separated from the refrigerating compartment 1 by a thermally insulating wall 7 chamber 8. The chamber 8 communicates with the refrigerated compartment 1 via air inlet and - outlets, in one of which a fan 9 is arranged for forced circulation of air between the chamber 8 and the refrigerating compartment 1.

Eine Steuerschaltung 10 ist mit einem im Kühlfach angeordneten Temperatursensor 12 und über Steuerleitungen mit dem Verdichter 3 und dem Ventilator 9 verbunden und ist in der Lage, den Verdichter 3_und den Ventilator 9 und mittelbar über den Verdichter 3 die Verdampfer 4, 5 - in Abhängigkeit von einer vom Temperatursensor 12 erfassten Temperatur ein- bzw. auszuschalten. Die Steuerschaltung 10 ist ferner an einen Luftfeuchtigkeitssensor 13 angeschlossen, der im Kühlfach 1 angeordnet ist. An der Steuerschaltung 10 kann ein von einem Benutzer betätigbarer Wählschalter 11 vorgesehen sein, der es erlaubt, einen Zielwert für die Luftfeuchtigkeit im Kühlfach 1 einzustellen.A control circuit 10 is connected to a arranged in the cooling compartment temperature sensor 12 and control lines to the compressor 3 and the fan 9 and is capable of the compressor 3_und the fan 9 and indirectly via the compressor 3, the evaporator 4, 5 - a temperature detected by the temperature sensor 12 on or off. The control circuit 10 is further connected to an air humidity sensor 13, which is arranged in the refrigerating compartment 1. At the control circuit 10 may be provided a user operable selector switch 11, which allows to set a target value for the humidity in the refrigerator compartment 1.

Der Luftfeuchtigkeitssensor 13 im Kühlfach 1 kann als Variante auch durch einen Luftfeuchtigkeitssensor außerhalb des Kühlfaches und/oder einen Sensor für die Umgebungstemperatur des Kältegerätes ersetzt sein, da deren Messwerte einen Rückschluss auf die Luftfeuchtigkeit im Kühlfach 1 zulassen.The humidity sensor 13 in the cooling compartment 1 can be replaced as a variant by a humidity sensor outside the cooling compartment and / or a sensor for the ambient temperature of the refrigerator, since their measurements allow a conclusion on the humidity in the refrigerator compartment 1.

Figur 2 veranschaulicht die Arbeitsweise der Steuerschaltung 10 anhand der zeitlichen Verläufe einer Mehrzahl von Betriebsparametern des Kältegerätes. Die Kurve 3' gibt den Betriebszustand des Verdichters 3 an. Zum Zeitpunkt t0 ist er ausgeschaltet; sobald der Temperatursensor 12 die Überschreitung einer oberen Grenztemperatur registriert, zur Zeit t1, wird er eingeschaltet, so lange, bis zur Zeit t2 eine untere Grenztemperatur im Kühlfach 1 unterschritten wird. Ab dieser Zeit erwärmt sich das Kühlfach 1 erneut, bis bei t4 eine neue Einschaltphase des Verdichters 3 beginnt. FIG. 2 illustrates the operation of the control circuit 10 based on the time profiles of a plurality of operating parameters of the refrigeration device. The curve 3 'indicates the operating state of the compressor 3. At time t 0 it is off; as soon as the temperature sensor 12 registers the exceeding of an upper limit temperature, at time t 1 , it is switched on until it falls below a lower limit temperature in the cooling compartment 1 until time t 2 . From this time, the cooling compartment 1 is heated again until at t 4, a new switch-on of the compressor 3 begins.

Von t0 bis t1 ist die vom Sensor 13 erfasste Luftfeuchtigkeit im Kühlfach 1 auf einem konstanten, niedrigen Niveau. Mit dem Einschalten des Verdichters 3 geht zum Zeitpunkt t1 auch der Ventilator 9 in Betrieb, wie durch eine Kurve 9' dargestellt. Die Temperatur des Verdampfers 5, dargestellt durch eine Kurve 5', geht von einem Ruhewert T0 auf einen Wert T1 zurück. Feuchtigkeit aus der vom Ventilator 9 umgewälzten Luft schlägt sich am Verdampfer 5 nieder, so dass die Luftfeuchtigkeit 13' bis zum Zeitpunkt t2 der Abschaltung des Ventilators 9 langsam abnimmt. Ab dem Zeitpunkt t3 steigt die Feuchtigkeit 13' stark an, zum Beispiel weil die Tür des Kältegerätes geöffnet wird und warme, feuchte Luft von außen eindringt. Die Steuerschaltung 10 erkennt, dass eine intensivere Trocknung erforderlich ist und betreibt den Ventilator 9, wenn zum Zeitpunkt t4 der Verdichter 3 wieder eingeschaltet wird, intermittierend mit einem Tastverhältnis, das in Abhängigkeit von der zur Zeit t4 erfassten Luftfeuchtigkeit gewählt ist. Dies führt zu einer im Mittel geringeren Umwälzleistung des Ventilators 9 als während des Zeitintervalls t1 bis t2, so dass der Wärmeaustausch zwischen dem Verdampfer 5 und dem Kühlfach 1 verlangsamt ist. Die Einschaltzeitspanne t4 bis t5 ist daher länger als die Zeitspanne t1 bis t2, und die während dieser Zeitspanne erreichte Temperatur T2 des Verdampfers 5 ist niedriger als T1. Diese niedrigere Temperatur T2 führt dazu, dass die am Verdampfer 5 vorbeiströmende Luft effektiver getrocket wird, und aufgrund der verlängerten Einschaltdauer des Verdichters 3 wird schließlich wieder ein niedriger Luftfeuchtigkeitswert erreicht.From t 0 to t 1 , the humidity detected in the cooling compartment 1 by the sensor 13 is at a constant, low level. With the switching on of the compressor 3, the fan 9 also starts operating at the time t 1 , as represented by a curve 9 '. The temperature of the evaporator 5, represented by a curve 5 ', goes back from a rest value T 0 to a value T 1 . Moisture from the air circulated by the fan 9 settles on the evaporator 5, so that the air humidity 13 'slowly decreases until the time t 2 of switching off the fan 9. From the time t 3 , the moisture 13 'rises sharply, for example, because the door of the refrigerator is opened and warm, moist air from the outside penetrates. The control circuit 10 recognizes that a more intensive drying is required and operates the fan 9, when at the time t 4, the compressor 3 is turned on again, intermittently with a duty cycle, which is selected in dependence on the detected at time t 4 humidity. This leads to a lower average Circulating power of the fan 9 as during the time interval t 1 to t 2 , so that the heat exchange between the evaporator 5 and the refrigerating compartment 1 is slowed down. The turn-on time t 4 to t 5 is therefore longer than the time t 1 to t 2 , and the temperature T 2 of the evaporator 5 reached during this period is lower than T 1 . This lower temperature T 2 causes the air flowing past the evaporator 5 to be more effectively dried, and due to the extended duty cycle of the compressor 3, finally, a low humidity value is again achieved.

Das Tastverhältnis, mit dem die Steuerschaltung 10 den Ventilator während der Einschaltphasen des Verdampfers betreibt, ist im einfachsten Fall eine Stufenfunktion, die für niedrige Luftfeuchtigkeiten den Wert 1 und für hohe Luftfeuchtigkeiten einen nicht verschwindenden Wert kleiner als hat; es kann auch eine Stufenfunktion mit einer Vielzahl von mit zunehmender Luftfeuchtigkeit abnehmenden Werten des Tastverhältnisses oder eine kontinuierliche Funktion zur Steuerung herangezogen werden.The duty cycle with which the control circuit 10 operates the fan during the switch-on phases of the evaporator is in the simplest case a step function which has a value of 1 for low humidities and a non-zero value for high humidities; it is also possible to use a step function with a multiplicity of values of the duty cycle decreasing with increasing humidity or a continuous function for the control.

Bei einer zweiten Ausgestaltung der Erfindung ist die Steuerschaltung 10 ausgelegt, um in Abhängigkeit von einer gemessenen Luftfeuchtigkeit unterschiedliche Drehzahlen des Ventilators 9 einzustellen. Die Arbeitsweise dieser Ausgestaltung ist in Figur 3 dargestellt. Wenn die Luftfeuchtigkeit niedrig ist, läuft in einer Einschaltphase des Verdampfers 4 der Ventilator 9 mit maximaler Drehzahl, und die zeitlichen Verläufe von Ein- und Ausschaltphasen, Verdampfertemperatur und Luftfeuchtigkeit sind die gleichen wie im Falle der Figur 2. Infolgedessen unterscheidet sich das Diagramm der Figur 3 bis zum Zeitpunkt t4 nicht von dem der Figur 2. Zum Zeitpunkt t4 wählt die Steuerschaltung 10 anhand des zu diesem Zeitpunkt gemessenen hohen Luftfeuchtigkeitswertes eine Drehzahl des Ventilators 9, die kleiner als dessen maximale Drehzahl ist. Während des Betriebes des Verdichters und des Ventilators nimmt die Luftfeuchtigkeit kontinuierlich ab, und dementsprechend steigt die Drehzahl des Ventilators 9, die die Steuerschaltung 10 anhand der gemessenen Luftfeuchtigkeit wählt, und mit zunehmender Umwälzleistung des Ventilators 9 steigt auch die Temperatur des Verdampfers 5 auf einem großen Teil des Zeitintervalls t4 bis t5 kontinuierlich an.In a second embodiment of the invention, the control circuit 10 is designed to set different speeds of the fan 9 as a function of a measured air humidity. The operation of this embodiment is in FIG. 3 shown. When the humidity is low, in a switch-on phase of the evaporator 4, the fan 9 runs at maximum speed, and the time courses of on and off phases, evaporator temperature and humidity are the same as in the case of FIG. 2 , As a result, the diagram differs FIG. 3 not until the time t 4 of the FIG. 2 , At time t 4 , the control circuit 10 selects a speed of the fan 9, which is smaller than its maximum speed based on the measured at this time high humidity value. During the operation of the compressor and the fan, the humidity continuously decreases, and accordingly the speed of the fan 9, which selects the control circuit 10 based on the measured humidity, and with increasing circulation capacity of the fan 9, the temperature of the evaporator 5 increases to a large Part of the time interval t 4 to t 5 continuously.

In den Figuren 2 und 3 ist der Fall einer schnellen Austrocknung dargestellt, bei der eine einzige Einschaltphase t4 bis t5 genügt, um die Luftfeuchtigkeit im Kühlfach auf einen Zielwert zurückzuführen. Selbstverständlich kann sich der Trocknungsvorgang auch auf mehrere aufeinanderfolgende Einschaltphasen verteilen.In the FIGS. 2 and 3 is shown the case of rapid dehydration, in which a single switch-on phase t 4 to t 5 is sufficient to the humidity in the refrigerator compartment to a Target value. Of course, the drying process can also be distributed over several successive switch-on phases.

Bei den Figuren 2 und 3 wurde davon ausgegangen, dass jeweils die maximale Umwälzleistung des Ventilators 9 einem gewünschten niedrigen Luftfeuchtigkeitswert im Kühlfach entspricht, so dass durch Drosseln der Umwälzleistung eine verstärkte Trocknung zu erreichen ist. Es ist jedoch durchaus zweckmäßig, den Ventilator 9 so zu dimensionieren, dass eine gewünschte Luftfeuchtigkeit bereits mit einer mittleren Umwälzleistung des Ventilators zu erreichen ist. Dies erlaubt es, durch Erhöhen der Umwälzleistung über diese mittlere Leistung hinaus den Wärmeaustausch zwischen Kühlfach 1 und Verdampfer 5 zu intensivieren, so dass sich die Dauer einer Einschaltphase des Verdichters 3 verkürzf und in dieser Einschaltphase aufgrund einer relativ hohen Temperatur des Verdampfers 5 dessen Trocknungswirkung abgeschwächt ist. Dadurch ist es auch möglich, die Luftfeuchtigkeit im Kühlfach 1 gezielt zu erhöhen, wenn diese unter einen gewünschten Wert abfällt.Both FIGS. 2 and 3 It was assumed that in each case the maximum circulation capacity of the fan 9 corresponds to a desired low air humidity value in the cooling compartment, so that increased drying can be achieved by throttling the circulation capacity. However, it is quite expedient to dimension the fan 9 so that a desired air humidity can be achieved even with a medium circulation capacity of the fan. This makes it possible to intensify the heat exchange between the refrigerating compartment 1 and evaporator 5 by increasing the circulation capacity beyond this average power so that the duration of a switch-on of the compressor 3 is shortened and attenuated in this switch-on phase due to a relatively high temperature of the evaporator 5 whose drying effect is. As a result, it is also possible to increase the humidity in the cooling compartment 1 in a targeted manner when it falls below a desired value.

Claims (7)

  1. No-frost refrigeration device having at least one storage compartment (1), an evaporator (5) which is arranged in a chamber (8) separated from the storage compartment (1) and can be switched on and off alternately, and a ventilator (9) for circulating air between the storage compartment (1) and the chamber (8) of the evaporator (5), wherein in a switched-on phase of the evaporator (5) a mean circulation rate of the ventilator (9) is made variable, characterised in that in the switched-on phase of the evaporator (5), the ventilator (9) can be switched off temporarily and a control circuit (10) is configured to control the operation of the evaporator (5) and the ventilator (9) in order to operate the ventilator (9) intermittently when the evaporator (5) is switched on, wherein the no-frost refrigeration device has a selector switch, on which a pulse-duty factor for the intermittent operation of the ventilator (9) can be adjusted, or the control circuit (10) is coupled to at least one climate sensor (13) and regulates the pulse-duty factor as a function of at least one climate parameter detected by the climate sensor (13).
  2. No-frost refrigeration device according to claim 1, characterised in that in the switched-on phase of the evaporator (5), the ventilator (9) can be adjusted to different non-zero speeds.
  3. No-frost refrigeration device according to claim 2, characterised in that the control circuit (10) is configured to control the operation of the evaporator (5) and the ventilator (9) in order to operate the ventilator (9) at a non-zero speed which can be selected from several non-zero speeds when the evaporator (5) is switched on.
  4. No-frost refrigeration device according to claim 2, characterised in that a speed for the operation of the ventilator can be adjusted with the selector switch.
  5. No-frost refrigeration device according to claim 2, characterised in that the control circuit (10) regulates the speed on the basis of a climate parameter which is detected by the climate sensor (13).
  6. Method for operating a refrigeration device according to one of the preceding claims, with the steps:
    a) estimating a humidity value in the storage compartment (1);
    b) selecting a circulation rate for the ventilator as a function of the estimated humidity value;
    c) operating the ventilator at the selected circulation rate.
  7. Method according to claim 6, characterised in that the lower the circulation rate selected, the higher the estimated humidity value.
EP04739760.9A 2003-06-11 2004-06-09 Refrigeration device comprising controlled de-humidification Expired - Lifetime EP1636530B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10326329A DE10326329A1 (en) 2003-06-11 2003-06-11 Refrigeration device with controlled dehumidification
PCT/EP2004/006256 WO2004109205A1 (en) 2003-06-11 2004-06-09 Refrigeration device comprising controlled de-humidification

Publications (2)

Publication Number Publication Date
EP1636530A1 EP1636530A1 (en) 2006-03-22
EP1636530B1 true EP1636530B1 (en) 2016-12-07

Family

ID=33482794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04739760.9A Expired - Lifetime EP1636530B1 (en) 2003-06-11 2004-06-09 Refrigeration device comprising controlled de-humidification

Country Status (5)

Country Link
US (1) US20070137227A1 (en)
EP (1) EP1636530B1 (en)
CN (2) CN101893363A (en)
DE (2) DE20321771U1 (en)
WO (1) WO2004109205A1 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006040370A1 (en) * 2006-08-29 2008-03-06 BSH Bosch und Siemens Hausgeräte GmbH Refrigeration unit with forced-ventilated evaporator
KR101402628B1 (en) * 2007-06-11 2014-06-09 삼성전자 주식회사 Refrigerator and operating method of the same
DE202008000761U1 (en) * 2007-12-27 2009-04-30 Liebherr-Hausgeräte Ochsenhausen GmbH Freezer or fridge freezer
DE202008000757U1 (en) 2007-12-28 2009-04-30 Liebherr-Hausgeräte Ochsenhausen GmbH Fridge and / or freezer
DE102008051748B4 (en) * 2008-10-15 2019-09-19 Liebherr-Hausgeräte Lienz Gmbh Method for dehumidifying the air in the interior of a device
DE202009006301U1 (en) * 2009-02-23 2010-07-15 Liebherr-Hausgeräte Ochsenhausen GmbH cabinet
DK177003B1 (en) 2009-08-20 2010-11-15 Maersk Container Ind As Dehumidifier
WO2011079071A2 (en) * 2009-12-23 2011-06-30 Thermo King Corporation Apparatus for controlling relative humidity in a container
CN101915486B (en) * 2010-06-28 2014-02-26 合肥美的电冰箱有限公司 Moisturizing refrigerator and moisturizing control method thereof
US20120079840A1 (en) * 2010-09-30 2012-04-05 Lukasse Leijn Johannes Sjerp Method and system for temperature control in refrigerated storage spaces
WO2013007627A1 (en) * 2011-07-12 2013-01-17 A.P. Møller - Mærsk A/S Humidity control in a refrigerated transport container with an intermittently operated compressor
US20130014522A1 (en) * 2011-07-12 2013-01-17 A.P. Moller - Maersk A/S Humidity control in a refrigerated transport container with an intermittently operated compressor
EP2546084A1 (en) * 2011-07-12 2013-01-16 A.P. Møller - Mærsk A/S Humidity control in a refrigerated transport container with an intermittently operated compressor
DE102012209938A1 (en) * 2012-06-13 2013-12-19 BSH Bosch und Siemens Hausgeräte GmbH The refrigerator
CN104752970B (en) * 2012-10-15 2017-11-21 国网江苏省电力公司常州供电公司 Dehumidification method of anti-condensation automatic electric cabinet dehumidifier
KR20150075895A (en) * 2013-12-26 2015-07-06 동부대우전자 주식회사 Method and apparatus for controlling refrigerator to prevent dew from forming thereon
FR3017200A1 (en) * 2014-02-06 2015-08-07 Dpkl METHOD FOR CONTROLLING THE ATMOSPHERE OF A REFRIGERANT ENCLOSURE
CN104567241A (en) * 2014-11-26 2015-04-29 青岛海尔股份有限公司 Dry storage device and ventilation method thereof
CN104567189A (en) * 2014-11-26 2015-04-29 青岛海尔股份有限公司 Dry storage device and ventilation method thereof
DE102015211960A1 (en) * 2015-06-26 2016-12-29 BSH Hausgeräte GmbH Refrigeration unit with humidity monitoring
WO2017059021A1 (en) * 2015-09-30 2017-04-06 Electrolux Home Products, Inc. Temperature control of refrigeration cavities in low ambient temperature conditions
CN105783385B (en) * 2016-04-20 2018-05-11 合肥华凌股份有限公司 A kind of cold compartment of refrigerator defrosting method, defrosting system and refrigerator
DE102020207894A1 (en) 2020-06-25 2021-12-30 BSH Hausgeräte GmbH Method for operating a household refrigerator and household refrigerator
CN113865200B (en) * 2021-10-08 2022-08-23 珠海格力电器股份有限公司 Freezing and refrigerating equipment and control method and computer readable storage medium thereof
CN116045599A (en) * 2022-12-22 2023-05-02 珠海格力电器股份有限公司 Dehumidification control method and device and low-temperature storage equipment

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2285946A (en) * 1939-12-30 1942-06-09 Westinghouse Electric & Mfg Co Refrigeration apparatus
US2346837A (en) * 1941-02-24 1944-04-18 Gen Motors Corp Refrigerating apparatus
US2416354A (en) * 1944-03-29 1947-02-25 Philco Corp Controlled humidity refrigerator
US2442188A (en) * 1944-11-28 1948-05-25 Philco Corp Controlled humidity refrigerator
US2549547A (en) * 1945-07-06 1951-04-17 Trask Allen Humidity control system
US3403534A (en) * 1967-01-03 1968-10-01 Gen Motors Corp Condensation control system for humidified refrigerator
US4459519A (en) * 1974-06-24 1984-07-10 General Electric Company Electronically commutated motor systems and control therefor
US3998068A (en) * 1975-07-17 1976-12-21 William Chirnside Fan delay humidistat
US4315413A (en) * 1979-12-31 1982-02-16 Whirlpool Corporation Selective temperature control system
ITTO20020457A1 (en) * 2002-05-29 2003-12-01 C R F Societa Con Sortile Per DEVICE AND METHOD FOR AUTOMATICALLY PREVENTING THE FOGING OF A VEHICLE WINDSHIELD.
JPH01222177A (en) * 1988-02-29 1989-09-05 Fujitsu General Ltd Operation control method for electric refrigerator
JPH0217375A (en) * 1988-07-04 1990-01-22 Fujitsu General Ltd Operation control of electric refrigerator
DE3904216A1 (en) * 1989-02-13 1990-08-16 Miele & Cie Refrigerator having a microprocessor-controlled temperature regulation
US4984433A (en) * 1989-09-26 1991-01-15 Worthington Donald J Air conditioning apparatus having variable sensible heat ratio
US5355686A (en) * 1993-08-11 1994-10-18 Micro Weiss Electronics, Inc. Dual temperature control of refrigerator-freezer
US5711159A (en) * 1994-09-07 1998-01-27 General Electric Company Energy-efficient refrigerator control system
US5490394A (en) * 1994-09-23 1996-02-13 Multibras S/A Eletrodomesticos Fan control system for the evaporator of refrigerating appliances
JP3287360B2 (en) * 1994-11-11 2002-06-04 三星電子株式会社 Refrigerator with high efficiency multi-evaporator cycle (HIGH EFFICIENCY MULTI-EVAPORATOR CYCLE (HM CYCLE)) and control method therefor
NZ314264A (en) * 1997-02-18 1999-06-29 Fisher & Paykel Ltd Substitute Refrigeration apparatus comprising at least two compartments wherein the temperature of each compartment is independently controlled and temperatures are achieved simultaneously
KR19980083487A (en) * 1997-05-15 1998-12-05 윤종용 Refrigeration control device and method
DE19815642A1 (en) * 1998-04-07 1999-10-14 Bsh Bosch Siemens Hausgeraete Method for controlling a refrigeration device
US5931011A (en) * 1998-06-23 1999-08-03 Hoshizaki Denki Kabushiki Kaisha Low temperature storage cabinet
US6290140B1 (en) * 1999-03-04 2001-09-18 Energyiq Systems, Inc. Energy management system and method
US6427454B1 (en) * 2000-02-05 2002-08-06 Michael K. West Air conditioner and controller for active dehumidification while using ambient air to prevent overcooling
US6508408B2 (en) * 2001-05-08 2003-01-21 Delphi Technologies, Inc. Automatic windglass fog prevention method for a vehicle climate control system
DE10139834A1 (en) * 2001-08-14 2003-02-27 Bsh Bosch Siemens Hausgeraete Refrigeration device and operating method for a refrigeration device
DE10161306A1 (en) * 2001-12-13 2003-06-26 Bsh Bosch Siemens Hausgeraete Method for controlling the moisture content of the air in a domestic frost-free refrigerator/freezer has a selector switch to vary the switching of the fan and compressor
ITPN20020003A1 (en) * 2002-01-18 2003-07-18 Friulinox S R L HUMIDITY REGULATION SYSTEM INSIDE REFRIGERATOR CELLS
DE10235783B4 (en) * 2002-08-05 2008-02-14 BSH Bosch und Siemens Hausgeräte GmbH Refrigeration unit with fan and control method for it
JP3922195B2 (en) * 2003-03-11 2007-05-30 株式会社デンソー Air conditioner for vehicles

Also Published As

Publication number Publication date
CN101893363A (en) 2010-11-24
US20070137227A1 (en) 2007-06-21
DE20321771U1 (en) 2009-10-29
CN1806155A (en) 2006-07-19
EP1636530A1 (en) 2006-03-22
DE10326329A1 (en) 2004-12-30
WO2004109205A1 (en) 2004-12-16

Similar Documents

Publication Publication Date Title
EP1636530B1 (en) Refrigeration device comprising controlled de-humidification
DE69926107T2 (en) Refrigerator / freezer with two evaporators for each fridge and freezer
EP2034084B1 (en) Clothes drier with auxiliary heat exchanger
DE19648570C2 (en) Fridge with a fridge and freezer
EP1884586A2 (en) Laundry dryer with supplementary heat exchanger
DE10235783B4 (en) Refrigeration unit with fan and control method for it
WO2003054462A1 (en) Refrigeration device comprising controllable dehumidification
EP3759405A1 (en) Refrigeration appliance comprising a defrost heater
WO2016206938A1 (en) Refrigeration unit with air humidity monitoring
EP3526530B1 (en) Refrigerator having a drying function, and operating method therefor
DE4132719C2 (en) Multi-temperature refrigerator
WO2014023689A1 (en) Refrigeration device and operating method therefor
EP2370760A1 (en) Refrigerator having several storage compartments
EP3699519A1 (en) Refrigeration device with two temperature zones and method of operation for same
WO2017076586A1 (en) Refrigeration device having a flexible compartment
WO2013060611A2 (en) Refrigeration appliance having an evaporation tray and auxiliary device for promoting evaporation
DE102016220160A1 (en) Refrigeration unit with dry function
EP3745054B1 (en) Fridge and / or freezer
WO2023011910A1 (en) Cooling device with a condenser fan and method for operating a cooling device with a condenser fan
DE10139834A1 (en) Refrigeration device and operating method for a refrigeration device
WO2021259631A1 (en) Method for operating a domestic refrigerator, and domestic refrigerator
DE102012007826A1 (en) Fridge and / or freezer
DE102011075946A1 (en) Refrigerating appliance e.g. household refrigerating appliance has control circuit, temperature sensor and timer that are arranged within storage chamber for reversing air circulation direction at operating phase of evaporator
WO2013000765A1 (en) Refrigeration device with evaporation pan and auxiliary device for promoting evaporation
WO2011104093A2 (en) Refrigeration device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20060111

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20090723

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BSH HAUSGERAETE GMBH

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160718

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 852108

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161215

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502004015410

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20161207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170308

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170407

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170307

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502004015410

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170908

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20170609

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20180228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170609

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170609

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170630

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170630

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170609

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170630

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170630

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 852108

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170609

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170630

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 502004015410

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170609

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20040609

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20220630

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20220630

Year of fee payment: 19

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502004015410

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240103