EP2449323B1 - Réfrigérateur fonctionnant indépendamment de la température ambiante - Google Patents

Réfrigérateur fonctionnant indépendamment de la température ambiante Download PDF

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Publication number
EP2449323B1
EP2449323B1 EP10722148A EP10722148A EP2449323B1 EP 2449323 B1 EP2449323 B1 EP 2449323B1 EP 10722148 A EP10722148 A EP 10722148A EP 10722148 A EP10722148 A EP 10722148A EP 2449323 B1 EP2449323 B1 EP 2449323B1
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EP
European Patent Office
Prior art keywords
compressor
temperature
operation ratio
heater
cooling compartment
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.)
Not-in-force
Application number
EP10722148A
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German (de)
English (en)
Other versions
EP2449323A2 (fr
Inventor
Turgay Ercan
Atilla Tuncel
Mehmet Oturak
Ibrahim Niyazi Ulgur
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Priority to PL10722148T priority Critical patent/PL2449323T3/pl
Publication of EP2449323A2 publication Critical patent/EP2449323A2/fr
Application granted granted Critical
Publication of EP2449323B1 publication Critical patent/EP2449323B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control 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
    • 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

Definitions

  • the present invention relates to a refrigerator having cooling and freezing compartments at different temperatures.
  • Cooling compartment is utilized preferably for storing fresh food and freezing compartment for storing frozen food.
  • Refrigerators are cooled by operating the compressor by using a heat sensor disposed to the cooling compartment.
  • the main problems in the refrigerators wherein the cooling is performed by taking the temperature of the cooling compartment as reference are encountered when the external ambient temperature is much lower or much higher than normal conditions.
  • the heat gain of the cooling compartment of the refrigerator is very low, and the operation ratio of the compressor and hence the cooling efficiency of the freezing department decreases.
  • the compressor does not operate for a long time, the temperature of the freezing compartment exceeds the desired temperature value, and causes the storage time of the frozen foods to decrease or the foods to be spoiled.
  • a heater is disposed in the cooling compartment for solving this problem.
  • the temperature of the cooling compartment is increased by the heater being activated and thus, the operation of the compressor is provided.
  • the compressor operates almost continuously to decrease the temperature of the cooling compartment. This causes icing on the evaporator and its capillaries, and the foods close to the evaporator to freeze.
  • various heaters are used on the evaporator and capillaries to prevent this problem. These heaters used in conventional refrigerators cause high power consumption.
  • the aim of the present invention is the realization of a refrigerator, the cooling performance of which is improved at high or low external ambient temperatures.
  • the operation of the refrigerator is regulated by a control unit.
  • the control unit of the present invention controls the operation time and stopping time of the compressor.
  • the sum of the operation and stopping is called cycle.
  • the control unit obtains the compressor operation ratio from the ratio of the operation time to the cycle time that is the sum of the operation time and stopping time in the previous cycle.
  • the control unit prevents the freezing on and around the evaporator by operating the fan and the heater. If the operation ratio is between the lower limit operation ratio and the upper limit operation ratio, the control unit waits for the compressor to operate at a number equal to a limit value within this interval stored in the memory of the control unit, and to reach the turn-off number, and operates the heater without turning the fan on when the number is reached. If the operation ratio is at the upper limit operation ratio or above, the control unit provides the compressor to reach the compressor cut-in temperature by operating the heater and the fan. Thus, the control unit regulates the operation of the heater and the fan by considering the operation ratios of the compressor. The air heated by the heater is delivered to the evaporator by means of the fan. An effective cooling is provided to be performed in different situations that change according to the cooling device ambient temperature and the door opening frequency.
  • the control unit turns the heater off and maintains the cooling process by operating the compressor again when the sensor detects that the compartment temperature has reached the compressor cut-in temperature after the control unit has operated the heater.
  • the control method of the refrigerator starts with a step wherein the stopping of the compressor is controlled. After the compressor stops, the steps in which it is controlled whether or not the operation ratio is lower than the lower limit operation ratio or higher than the upper limit operation ratio are started. If the operation ratio is lower than the lower limit operation ratio or higher than the upper limit operation ratio, the step wherein the heater and the fan are operated is performed. If the operation ratio is between the lower limit operation ratio and the upper limit operation ratio, it is inquired whether or not the compressor operation ratio remains between the lower limit operation ratio and the upper limit operation ratio in all of the cycles, the amount of which is a consecutively predetermined number.
  • the step wherein the heater is operated is started. In all of the steps wherein the heater is operated, it is controlled whether or not the cooling compartment temperature has reached the compressor cut-in temperature. When the cooling compartment temperature reaches the compressor cut-in temperature, the heater is turned off and the compressor is operated again, returning to the first step wherein the stopping of the compressor is controlled.
  • control unit of the present invention by considering the compressor operation ratios that change according to the external ambient temperature, it is determined whether or not freezing has occurred inside the cooling compartment and in the evaporator, and accordingly, the heater and the fan are operated and the heated air is directed to the areas wherein freezing can occur.
  • the areas which can be heated by using a plurality of heaters are heated by means of a single heater and an advantage in power consumption is provided.
  • Figure 1 - is the sideways schematic view of a refrigerator.
  • Figure 2 - is the flow chart of the control method in an embodiment of the present invention.
  • the refrigerator (1) comprises at least one cooling compartment (2), at least one freezing compartment (3),
  • the control unit (10) of the present invention measures the operation time (t a ) and stopping time (t b ) of the compressor (6).
  • the operation and stopping, in total, are called the cycle.
  • the control unit (10) furthermore, determines the compressor (6) operation ratio ( ⁇ ) from the ratio of the previous operation time (t a ) to the cycle time (t a + t b ) that is the sum of the previous operation time (t a ) and the previous stopping time (t b ).
  • the refrigerator (1) of the present invention furthermore, comprises
  • the fan (9) that is located inside the cooling compartment (2) circulates the air, which is cooled by the evaporator (5) near the rear wall, inside the cooling compartment (2) and thus, provides a homogeneous heat.
  • a sensor (8) is used to be able to detect whether or not the cooling compartment (2) is sufficiently cooled.
  • the compressor (6) cut-out temperature (Tcut-out) it is determined that the cooling compartment (2) is sufficiently cooled.
  • this temperature (Tcut-out) is reached, the compressor (6) is stopped and hence the refrigerant flow to the evaporator (5) is cut off. Excessive cooling is prevented by stopping the compressor (6).
  • the time elapsing while the compressor (6) is operating is the operation time (t a )
  • the time elapsing while the compressor (6) is being stopped is the stopping time (t b )
  • the sum of both (t a , t b ) is the cycle time (t a + t b ).
  • the operation ratio ( ⁇ ) is determined from the ratio of the operation time (ta) of the compressor (6) measured in the previous cycle to the cycle time (t a + t b ).
  • the control unit (10) of the present invention After operating the heater (7), the control unit (10) of the present invention turns off the heater (7) and operates the compressor (6) upon receiving the data from the sensor (8) that the compressor (6) cut-in temperature (Tcut-in) is reached. Thus, determining the operation time of the heater (7) is not required and when the compressor (6) cut-in temperature (Tcut-in) which is required for the compressor (6) to start operating is reached, the heater (7) is turned off.
  • the compressor (6) operation ratio ( ⁇ ) is lower than the predetermined lower limit operation ratio ( ⁇ II).
  • the compressor (6) operation ratio ( ⁇ ) being low causes the freezing compartment (3) not to be cooled sufficiently.
  • the heater (7) and the fan (9) are operated and thus, the compressor (6) is provided to operate again by the cooling compartment (2) being heated, meanwhile local freezing is prevented by the heated air being delivered to the evaporator (5) by means of the fan (9), and a homogeneous heat distribution is provided inside the cooling compartment (2).
  • the compressor (6) operation ratio ( ⁇ ) is between the lower limit operation ratio ( ⁇ II) and the upper limit operation ratio ( ⁇ ul).
  • the control unit (10) saves how many times the compressor (6) has operated between the lower limit operation ratio ( ⁇ II) and the upper limit operation ratio ( ⁇ ul) to its memory to decide whether or not the heater (7) will be operated.
  • the compressor (6) operates between the lower limit operation ratio ( ⁇ II) and the upper limit operation ratio ( ⁇ ul) for the first time, the one time operation-data is saved to the control unit (10) memory.
  • the heater (7) is operated.
  • the temperature of the cooling compartment (2) heated by the heater (7) reaches the compressor (6) cut-in temperature (Tcut-in)
  • the heater (7) is turned off and the compressor (6) is activated.
  • the number of successive operations in the control unit (10) memory is set to zero.
  • the heater (7) is not operated, and instead the cooling compartment (2) temperature is awaited until it reaches the compressor (6) cut-in temperature (Tcut-in), and then the compressor (6) is operated. After the compressor (6) operates, the operation ratio ( ⁇ ) is controlled again. If the compressor (6) operation ratio ( ⁇ ) is realized out of the range between the upper limit operation ratio ( ⁇ ul) and the lower limit operation ratio ( ⁇ II) in any cycle, the number of successive operations is set to zero.
  • the compressor (6) operation ratio ( ⁇ ) is equal to the upper limit operation ratio ( ⁇ ul) or higher than the upper limit operation ratio ( ⁇ ul).
  • the heater (7) is operated since the compressor (6) operation ratio ( ⁇ ) being high causes freezing on and around the evaporator (5), and the fan (9) is also operated for the heated air to reach the evaporator (5).
  • the heater (7) is turned off when the temperature of the cooling compartment (2) heated by the heater (7) reaches the compressor (6) cut-in temperature (Tcut-in).
  • the fan (9) is also turned off when the compressor (6) starts operating, whereas in another embodiment the fan (9) continues to operate since it will also be used while the compressor (6) is operating.
  • the compressor (6) which has exceeded the upper limit operation ratio ( ⁇ ul) due to the external ambient being warm, is prevented from causing freezing on and around the evaporator (5).
  • the external ambient temperature is very high or very low by considering the operation ratio ( ⁇ ) when the compressor (6) stops, and the heat distribution inside the cooling compartment (2) can be provided by using heater (7) and fan (9) as required.
  • the refrigerator (1) is operated according to the following method:
  • the control unit (10) first detects the operation or stopping state of the compressor (6), and regulates the operations of the fan (9) and the heater (7) for an effective and economic cooling when the compressor (6) stops.
  • the compressor (6) stops it detects the heat distribution inside and outside the cooling compartment (2) by the operation ratio ( ⁇ ), and prevents local freezing by operating the heater (7) and the fan (9) if required.
  • the need of cooling and/or heating is detected by considering the operation ratio ( ⁇ ) when the compressor (6) stops.
  • the heater (7) and the fan (9) are operated according to the determined need and a homogeneous heat is provided inside the cooling compartment (2) and thus, freezing on and around the evaporator (5) and heating in the freezing compartment (3) are prevented.
  • the utilization of additional heating devices for the evaporator (5) is not required by the heat of the heater (7) used in the cooling compartment (2) being directed to the evaporator (5) by means of the fan (9), and savings of cost and power consumption are provided.

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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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Claims (3)

  1. Un réfrigérateur (1) comprenant au moins un compartiment de refroidissement (2) et au moins un compartiment de congélation (3),
    - une paroi intermédiaire isolante (4) qui sépare les compartiments (2 et 3) l'un de l'autre,
    - au moins un évaporateur (5) qui est disposé sur la paroi arrière du compartiment de refroidissement (2),
    - un compresseur (6) qui comprime le fluide frigorigène qui passe à travers l'évaporateur (5) et qui circule dans le cycle de refroidissement,
    - un dispositif de chauffage (7) qui est disposé dans le compartiment de refroidissement (2) et utilisé pour empêcher la condensation d'eau dans celui-ci,
    - un capteur (8) qui mesure la température dans le compartiment de refroidissement (2),
    - un ventilateur (9) qui est situé dans le compartiment de refroidissement (2) et qui fait circuler dans le compartiment de refroidissement (2) l'air refroidi par l'évaporateur (5) ou chauffé par le dispositif de chauffage (7), et
    - une unité de commande (10) qui régule le fonctionnement du compresseur (6), du dispositif de chauffage (7) et du ventilateur (9) selon les données reçues par le capteur (8),
    caractérisé par le dispositif de chauffage (7) qui est disposé sur le plafond du compartiment de refroidissement (2), l'unité de commande (10) qui mesure le temps d'exécution (ta) et le temps d'arrêt (tb) du compresseur (6) et qui détermine le rapport d'exécution (Γ) du compresseur (6) à partir du rapport du temps d'exécution précédent (ta) au temps de cycle (ta+tb) qui est la somme du temps d'exécution précédent (ta) et le temps d'arrêt précédent (tb) lorsque le compresseur (6) s'arrête, et
    - le ventilateur (9) et le dispositif de chauffage (7) qui sont activés par l'unité de commande (10) si le rapport d'exécution (Γ) est inférieur à la limite inférieure prédéterminée du rapport d'exécution (Γll) ou supérieur à la limite supérieure prédéterminée du rapport d'exécution (Γul) ou égal à celle-ci lorsque le compresseur (6) s'arrête, et
    - le dispositif de chauffage (7) qui est activé si tous les cycles, dont la montant est un nombre prédéterminé consécutivement, sont réalisés à un rapport d'exécution (Γ) entre la limite inférieure du rapport d'exécution (Γll) et la limite supérieure du rapport d'exécution (Γul) lorsque le compresseur (6) s'arrête.
  2. Un réfrigérateur (1) selon la Revendication 1, caractérisé par l'unité de commande (10) qui éteint le dispositif de chauffage (7) après avoir fait marché le dispositif de chauffage (7) et qui fait marcher le compresseur (6) après avoir reçu les données du capteur (8) que la température d'activation (Tcut-in) du compresseur (6) est atteinte.
  3. Un procédé pour fonctionner le réfrigérateur (1) selon l'une quelconque des revendications précédentes, ledit procédé comprenant les étapes suivantes:
    - Se renseigner si le compresseur (6) est en marche ou non (1000),
    - Si le compresseur (6) est en marche, retourner au première étape où l'on se renseigne si le compresseur (6) est en marche ou non (1000),
    - Si le compresseur (6) n'est pas en marche, se renseigner si ou non le rapport d'exécution (Γ) est inférieur à la limite inférieure du rapport d'exécution (Γll) (1020),
    - Si le rapport d'exécution (Γ) est inférieur à la limite inférieure du rapport d'exécution (Γll), faire marcher le ventilateur (9) et le dispositif de chauffage (7) (1021),
    - Se renseigner si ou non la température du compartiment de refroidissement (2) est supérieure à la température d'activation (tcut-in) du compresseur (6) (121),
    - Arrêter le dispositif de chauffage (7) et se marcher le compresseur (6) si la température du compartiment de refroidissement (2) est supérieure à la température d'activation (tcut-in) du compresseur (6) (1030),
    - Continuer à marcher le ventilateur (9) et le dispositif de chauffage (7) si la température du compartiment de refroidissement (2) n'est pas supérieure à la température d'activation (tcut-in) du compresseur (6) (1021),
    - Si le rapport d'exécution (Γ) est supérieur à la limite inférieure du rapport d'exécution (Γll), se renseigner si ou non le rapport d'exécution (Γ) est inférieur à la limite supérieure du rapport d'exécution (Γul) (1022),
    - Si le rapport d'exécution (Γ) est supérieur à la limite supérieure du rapport d'exécution (Γul), faire marcher le ventilateur (9) et le dispositif de chauffage (7) (1024),
    - Se renseigner si ou non la température du compartiment de refroidissement (2) est supérieure à la température d'activation (tcut-in) du compresseur (6) (124),
    - Arrêter le dispositif de chauffage (7) et se marcher le compresseur (6) si la température du compartiment de refroidissement (2) est supérieure à la température d'activation (tcut-in) du compresseur (6) (1030),
    - Continuer à marcher le ventilateur (9) et le dispositif de chauffage (7) si la température du compartiment de refroidissement (2) n'est pas supérieure à la température d'activation (tcut-in) du compresseur (6) (1024),
    - Si le rapport d'exécution (Γ) est inférieur à la limite supérieure du rapport d'exécution (Γul), comparer le nombre d'opérations consécutives du compresseur (6) entre la limite inférieure du rapport d'exécution (Γll) et la limite supérieure du rapport d'exécution (Γul) avec la valeur limite enregistrée dans la mémoire de l'unité de commande (10) (1023),
    - Maintenir le ventilateur (9) éteint et faire marcher le dispositif de chauffage (7) si le compresseur (6) a fonctionné consécutivement à la valeur limite entre la limite inférieure du rapport d'exécution (Γll) et la limite supérieure du rapport d'exécution (Γul) (1025),
    - Se renseigner si ou non la température du compartiment de refroidissement (2) est supérieure à la température d'activation (tcut-in) du compresseur (6) (125),
    - Arrêter le dispositif de chauffage (7) et se marcher le compresseur (6) si la température du compartiment de refroidissement (2) est supérieure à la température d'activation (tcut-in) du compresseur (6) (1030),
    - Après l'étape où le compresseur (6) est marché (1030), retourner à l'étape où le fonctionnement du compresseur (6) est vérifié (1000),
    - Continuer à marcher le ventilateur (9) et le dispositif de chauffage (7) si la température du compartiment de refroidissement (2) n'est pas supérieure à la température d'activation (tcut-in) du compresseur (6) (1025),
    - Maintenir le ventilateur (9) et le dispositif de chauffage (7) éteint si le compresseur (6) n'a pas fonctionné consécutivement à la valeur limite entre la limite inférieure du rapport d'exécution (Γll) et la limite supérieure du rapport d'exécution (Γul) (1026),
    - Se renseigner si ou non la température de l'évaporateur (5) du compartiment de refroidissement (2) est supérieure à la température d'activation (tcut-in) du compresseur (6) (126),
    - Maintenir le ventilateur (9) et le dispositif de chauffage (7) éteint si la température du compartiment de refroidissement (2) n'est pas supérieure à la température d'activation (tcut-in) du compresseur (6) (1026),
    - Si la température de l'évaporateur (5) du compartiment de refroidissement (2) est supérieure à la température d'activation (tcut-in) du compresseur (6), augmenter le nombre d'opérations du compresseur (6) d'un dans la mémoire de l'unité de commande (10) entre la limite inférieure du rapport d'exécution (Γll) et la limite supérieure du rapport d'exécution (Γul) (1028), et
    Retourner à l'étape où le rapport d'exécution (Γ) est vérifié après que le compresseur (6) est marché (1000).
EP10722148A 2009-06-30 2010-06-16 Réfrigérateur fonctionnant indépendamment de la température ambiante Not-in-force EP2449323B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10722148T PL2449323T3 (pl) 2009-06-30 2010-06-16 Lodówka działająca niezależnie od temperatury otoczenia

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200905077 2009-06-30
PCT/EP2010/058501 WO2011000706A2 (fr) 2009-06-30 2010-06-16 Réfrigérateur fonctionnant indépendamment de la température ambiante

Publications (2)

Publication Number Publication Date
EP2449323A2 EP2449323A2 (fr) 2012-05-09
EP2449323B1 true EP2449323B1 (fr) 2013-03-20

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Application Number Title Priority Date Filing Date
EP10722148A Not-in-force EP2449323B1 (fr) 2009-06-30 2010-06-16 Réfrigérateur fonctionnant indépendamment de la température ambiante

Country Status (5)

Country Link
EP (1) EP2449323B1 (fr)
CN (1) CN102472569B (fr)
ES (1) ES2406255T3 (fr)
PL (1) PL2449323T3 (fr)
WO (1) WO2011000706A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075004A1 (de) * 2011-04-29 2012-10-31 BSH Bosch und Siemens Hausgeräte GmbH Einkreis-Kältegerät
US9250011B2 (en) 2011-08-26 2016-02-02 Thetford Corporation Absorption refrigerator with temperature control
PL2798290T3 (pl) * 2011-12-26 2016-12-30 Urządzenie chłodzące ze zmniejszonym zużyciem energii
CN102589231A (zh) * 2012-02-23 2012-07-18 合肥美的荣事达电冰箱有限公司 单制冷系统冰箱
WO2013182374A1 (fr) * 2012-06-06 2013-12-12 Arcelik Anonim Sirketi Dispositif de refroidissement ayant deux compartiments
CN106352647B (zh) * 2016-08-30 2019-02-12 合肥美的电冰箱有限公司 温度控制方法及温度控制装置和冰箱

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1178315A (zh) * 1996-09-30 1998-04-08 大宇电子株式会社 控制冰箱风扇的方法
CN1137364C (zh) * 1998-10-31 2004-02-04 株式会社大宇电子 冰箱除霜方法
EP1030147B1 (fr) * 1999-02-19 2004-04-07 Ranco Incorporated of Delaware Dispositif et procédé de commande de la température dans un réfrigérateur
UA76962C2 (en) * 2000-10-11 2006-10-16 Arcelik As Method for refrigerating device control (variants)
SI22068A (sl) * 2005-05-19 2006-12-31 Gorenje Gospodinjski Aparati, D.D. Regulacija hladilno zamrzovalnega aparata
CN101382375A (zh) * 2007-09-07 2009-03-11 伊莱克斯(中国)电器有限公司 无霜冰箱的化霜控制方法

Also Published As

Publication number Publication date
ES2406255T3 (es) 2013-06-06
WO2011000706A2 (fr) 2011-01-06
CN102472569B (zh) 2015-04-08
WO2011000706A3 (fr) 2011-04-07
PL2449323T3 (pl) 2013-08-30
EP2449323A2 (fr) 2012-05-09
CN102472569A (zh) 2012-05-23

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