EP2370769B1 - Dispositif de refroidissement - Google Patents

Dispositif de refroidissement Download PDF

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Publication number
EP2370769B1
EP2370769B1 EP09799616A EP09799616A EP2370769B1 EP 2370769 B1 EP2370769 B1 EP 2370769B1 EP 09799616 A EP09799616 A EP 09799616A EP 09799616 A EP09799616 A EP 09799616A EP 2370769 B1 EP2370769 B1 EP 2370769B1
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EP
European Patent Office
Prior art keywords
fresh food
food compartment
temperature
sensor
compartment
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Active
Application number
EP09799616A
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German (de)
English (en)
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EP2370769A2 (fr
Inventor
Serdar Kocaturk
Ibrahim Niyazi Ulgur
Sabahattin Hocaoglu
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Arcelik AS
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Arcelik AS
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Publication of EP2370769A2 publication Critical patent/EP2370769A2/fr
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Publication of EP2370769B1 publication Critical patent/EP2370769B1/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • 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
    • 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
    • F25D2700/123—Sensors measuring the inside temperature more than one sensor measuring the inside temperature in a compartment

Definitions

  • the present invention relates to a cooling device comprising one or more compartments wherein the temperature fluctuations are decreased.
  • the compressor operates or stops depending on the thermostat value of the freezer compartment.
  • the evaporator fan of the freezer compartment is generally activated together with the compressor and is deactivated when the compressor stops.
  • the evaporator fan of the fresh food compartment operates or stops depending on the thermostat value of the freezer compartment. While an effective cooling is maintained in the freezer compartment, high temperature fluctuations occur in the fresh food compartment wherein the fan operates at long intervals. The temperature fluctuations being high in the fresh food compartment causes the temperature of the foods stored in the said compartment to also change and the quality of the food to be adversely affected.
  • the aim of the present invention is the realization of a cooling device wherein the temperature variability is reduced in the fresh food compartment.
  • the cooling device of the present invention comprises a fresh food compartment, a freezer compartment, a compressor, a fresh food compartment evaporator and a freezer compartment evaporator connected in series to each other, a fresh food compartment fan and a freezer compartment fan that blows air separately to each compartment and a control unit that regulates the operation of the compressor and the fans such that both of the compartments are kept within a certain temperature range.
  • the control unit by controlling the temperature value detected by the fresh food compartment sensor when the compressor is activated by the freezer compartment sensor as being actuated, provides the fresh food compartment fan to operate together with the freezer compartment fan if the temperature detected by the fresh food compartment sensor is equal to or greater than a first threshold temperature which is smaller than the activation temperature of the fresh food compartment and greater than the deactivation temperature of the fresh food compartment.
  • a first threshold temperature which is smaller than the activation temperature of the fresh food compartment and greater than the deactivation temperature of the fresh food compartment.
  • the control unit furthermore, stops the fresh food compartment fan when the temperature detected by the fresh food compartment sensor reaches the second threshold temperature value that is greater than the fresh food compartment deactivation temperature.
  • the fresh food compartment fan is not expected to operate until the upper cut-in temperature and hence, the increase of temperature fluctuations in the fresh food compartment are prevented.
  • the first threshold temperature that determines the criteria for the fresh food compartment fan to operate together with the freezer compartment fan is approximately 1 °C lower than the lower cut-off temperature of the fresh food compartment.
  • the first threshold temperature that determines the criteria for the fresh food compartment fan to operate together with the freezer compartment fan is equal to half the sum of the maximum temperature value and the minimum temperature value detected by the fresh food compartment sensor in the previous refrigeration cycle.
  • the second threshold temperature that determines the criteria for the fresh food compartment fan to be stopped is lower than the last return temperature, which is the temperature value whereat the temperature changes from the upward trend to the downward trend, detected by the fresh food compartment sensor in the previous refrigeration cycle, by as much as temperature value determined by the producer,.
  • the deactivation temperature of the fresh food compartment fan is determined in accordance with the conditions specified at previous cycles.
  • energy consumption is provided not to increase.
  • Figure 1 - is the schematic view of the cooling device.
  • Figure 2 - is the graphic showing the operation of the compressor with respect to time.
  • Figure 3 - is the graphic showing the operation of the freezer compartment fan with respect to time.
  • Figure 4 - is the graphic showing the change in the temperature detected by the fresh food compartment sensor with respect to time.
  • Figure 5 - is the graphic showing the operation cycle of the fresh food compartment fan with respect to time.
  • Figure 6 - is the flow chart of an embodiment of the control method.
  • the cooling device (1) comprises:
  • TFF The temperature detected by the fresh food compartment sensor (9)
  • TFRZ The temperature detected by the freezer compartment sensor (10)
  • TFFcut-in the activation temperature of the fresh food compartment (2) predetermined by the producer wherein the compressor (4) is operated for cooling the fresh food compartment (2).
  • TFFcut-out the deactivation temperature of the fresh food compartment (2) predetermined by the producer wherein the compressor (4), operated depending on the activation temperature (TFFcut-in) of the fresh food compartment (2), is stopped.
  • TFRZcut-in the activation temperature of the freezer compartment (3) predetermined by the producer wherein the compressor (4) is operated for cooling the freezer compartment (3).
  • TFRZcut-out the deactivation temperature of the freezer compartment (3) predetermined by the producer wherein the compressor (4), operated depending on the activation temperature (TFRZ) of the freezer compartment (3), is stopped.
  • LRT the maximum temperature value detected by the fresh food compartment sensor (9), saved in the cycle wherein the compressor (4) is activated by the freezer compartment sensor (10) after the last cycle wherein the compressor (4) is actuated by the fresh food compartment sensor (9).
  • T1 The first threshold temperature that is lower than the activation temperature (TFFcut-in) of the fresh food compartment (2) and greater than the deactivation temperature (TFFcut-out) of the fresh food compartment (2).
  • T2 The second threshold temperature that is greater than the deactivation temperature (TFFcut-out) of the fresh food compartment (2).
  • the temperature of the fresh food compartment (2) is measured by the fresh food compartment sensor (9) and the temperature of the freezer compartment (3) is measured by the freezer compartment sensor (10).
  • the control unit (11) activates the compressor (4) by evaluating whether any one of the compartments (2, 3) require cooling according to the temperature values (TFF or TFRZ) detected by the fresh food compartment sensor (9) or the freezer compartment sensor (10).
  • the compressor (4) is operated and stopped periodically when a cooling requirement occurs in the fresh food compartment (2) or the freezer compartment (3) ( Figure 2 ). In the graphics, time is shown with T(min), and with 0-1, activation and deactivation of the compressor (4), fresh food compartment fan (7) and the freezer compartment fan (8) are shown.
  • the compressor (4) is operated by the control unit (11) when the temperature (TFF) detected by the fresh food compartment sensor (9) is equal to or greater than the activation temperature (TFFcut-in) of the fresh food compartment (2).
  • the compressor (4) is stopped by the control unit (11) when the temperature (TFF) detected by the fresh food compartment sensor (9) is equal to or lower than the deactivation temperature (TFFcut-out) of the fresh food compartment (2).
  • the compressor (4) is operated by the control unit (11) when the temperature (TFRZ) detected by the freezer compartment sensor (10) is equal to or greater than the activation temperature (TFRZcut-in) of the freezer compartment (3).
  • the compressor (4) is stopped by the control unit (11) when the temperature (TFRZ) detected by the freezer compartment sensor (10) is equal to or lower than the deactivation temperature (TFRZcut-out) of the freezer compartment (3).
  • the control unit (11) compares the temperature (TFF) detected by the fresh food compartment sensor (9) with the first threshold temperature (T1) when the compressor (4) is actuated to operate by the freezer compartment sensor (10).
  • the control unit (11) enables the fresh food compartment fan (7) to operate together with the freezer compartment fan (8) when the temperature (TFF) detected by the fresh food compartment sensor (9) is greater than the first threshold temperature (T1) ( Figure 2, Figure 3, Figure 4 and Figure 5 ).
  • the freezer compartment fan (8) is also activated a short while after the start of the compressor (4) operation period regardless of the temperature (TFRZ) detected by the freezer compartment sensor (10) and operates until the deactivation temperature (TFRZcut-out) of the freezer compartment (3) is detected in the freezer compartment sensor (10).
  • the control unit (11) compares the temperature (TFF) detected by the fresh food compartment sensor (9) with the first threshold temperature (T1).
  • the fresh food compartment fan (7) is also operated when the temperature (TFF) detected by the fresh food compartment sensor (9) is greater than the first threshold temperature (T1) ( Figure 2, Figure 3, Figure 4 and Figure 5 ).
  • operation of the fresh food compartment fan (7) together with the freezer compartment fan (8) provides the cooling device (1) to operate more efficiently in terms of thermodynamics.
  • the control unit (11) furthermore stops the fresh food compartment fan (7), when the temperature (TFF) detected by the fresh food compartment sensor (9) reaches the second threshold temperature (T2) value. In this case, it will be unnecessary to operate the fresh food compartment fan (7) until the fresh food compartment (2) upper cut-out temperature (TFFcut-out) is detected by the fresh food compartment sensor (9) and will cause the thermal fluctuation of the fresh food compartment (2) to increase.
  • the response of the fresh food compartment sensor (9) to the temperature change in the fresh food compartment (2) comes with a certain lag and the downward trend of the temperature (TFF) detected by the fresh food compartment sensor (9) continues even after the fresh food compartment fan (7) stops. Therefore, when the compressor (4) is actuated by the freezer compartment sensor (10), the deactivation temperature of the fresh food compartment fan (7) is made equal to a second threshold temperature (T2) that is greater than the upper cut-out temperature (TFFcut-out) of the fresh food compartment (2).
  • T2 second threshold temperature
  • T2 the upper cut-out temperature
  • the first threshold temperature (T1) is approximately 1 °C lower than the activation temperature (TFFcut-in) of the fresh food compartment (2).
  • the difference between the first threshold temperature (T1) and the activation temperature (TFFcut-in) of the fresh food compartment (2) is determined depending on the targeted temperature fluctuation in the fresh food compartment (2) and the operation frequency of the fresh food compartment fan (7).
  • the first threshold temperature (T1) is equal to half the sum of the maximum temperature (TFFmax) value and the minimum temperature (TFFmin) value detected by the fresh food compartment sensor (9) in the previous refrigeration cycle.
  • the second threshold temperature (T2) is correlated with the last return temperature (LRT) which is the value whereat the temperature (TFF) detected in the fresh food compartment sensor (9) changes from the upward trend to the downward trend.
  • the fresh food compartment fan (7) is stopped when the temperature (TFF) detected by the fresh food compartment sensor (9) is equal to a temperature that is lower than the saved last return temperature (LRT) by as much as temperature difference ( ⁇ T) determined by the producer.
  • ⁇ T is approximately 0.1 °C.
  • the compressor (4) is generally activated according to the activation temperature (TFRZcut-in) of the fresh food compartment (2) detected in the freezer compartment sensor (10).
  • TFRZcut-in the activation temperature of the fresh food compartment (2) detected in the freezer compartment sensor (10.
  • the last return temperature (LRT) is updated and saved depending on the amount of increase in the thermal load received into the fresh food compartment (2).
  • the deactivation temperature of the fresh food compartment fan (7) is determined according to the updated last return temperature (LRT). Since the deactivation temperature of the fresh food compartment fan (7) determined according to the updated last return temperature (LRT) and the activation temperature at the start of the compressor (4) operation period is limited by the activation temperature (TFFcut-in) of the fresh food compartment (2), the value of the average temperature with low fluctuation inside the fresh food compartment (2) does not change too much.
  • the control unit (11) of the cooling device (1) of the present invention operates according to the following method ( Figure 6 ):
  • the temperature fluctuations inside the fresh food compartment (2) are decreased by enabling the control unit (11) to carry out a control algorithm that varies depending on the thermal load in the fresh food compartment (2).
  • the storage conditions of the foods stored in the fresh food compartment (2) are improved and hence, they are provided to last for a longer period of time.

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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)

Abstract

Par le biais de la présente invention, les conditions de stockage des aliments stockés dans le compartiment de denrées fraîches (2) sont améliorées et par conséquent, les denrées fraîches devraient durer plus longtemps en raison de la réduction des variations de température à l'intérieur du compartiment de denrées fraîches (2).

Claims (6)

  1. Un dispositif de refroidissement (1) comprenant
    • un compartiment d'aliments frais (2) dans lequel les aliments sont stockés pour le refroidissement
    • un compartiment de congélation (3) dans lequel les aliments sont stockés pour la congélation, qui est gardé à des températures plus basses que celles du compartiment d'aliments frais (2)
    • un compresseur (4),
    • un évaporateur de compartiment d'aliments frais (5) qui refroidit le compartiment d'aliments frais (2) en permettant le transfert de la chaleur entre le milieu et le fluide réfrigérant.
    • un évaporateur de compartiment de congélation (6) relié en série à l'évaporateur de compartiment d'aliments frais (5), pour le refroidissement du compartiment de congélation (3),
    • un ventilateur de compartiment d'aliments frais (7) qui déplace l'air froid environ l'évaporateur de compartiment d'aliments frais (5) et le pousse dans le compartiment d'aliments frais (2),
    • un ventilateur de compartiment de congélation (8) qui déplace l'air froid environ l'évaporateur de compartiment de congélation (6) et le pousse dans le compartiment de congélation (3),
    • un capteur de compartiment d'aliments frais (9) qui mesure la température dans le compartiment d'aliments frais (2),
    • un capteur de compartiment de congélation (10) qui mesure la température dans le compartiment de congélation (3),
    • une unité de commande (11) qui garde les températures du compartiment d'aliments frais (2) et du compartiment de congélation (3) dans des certaines gammes de températures en contrôlant l'activation et/ou désactivation du compresseur (4), du ventilateur de compartiment d'aliments frais (7) et/ou du ventilateur de compartiment de congélation (8) en fonction des valeurs de température détectées par le capteur de compartiment d'aliments frais (9) et/ou par le capteur de compartiment de congélation (10),
    et caractérisé en ce que l'unité de commande (11) contrôle la température (TFF) détectée par le capteur de compartiment d'aliments frais (9) lorsque le compresseur (4) est mis en marche par l'activation du capteur de compartiment de congélation (10) et met en marche le ventilateur de compartiment d'aliments frais (7) aussi bien que le ventilateur de compartiment de congélation (8) si la température (TFF) détectée par le capteur de compartiment d'aliments frais (9) est supérieure à une première température de seuil (T1) qui est inférieure à la température d'activation (TFFcut-in) du compartiment d'aliments frais (2) et supérieure à la température de désactivation (TFFcut-out) du compartiment d'aliments frais (2).
  2. Un dispositif de refroidissement (1) selon la Revendication 1, caractérisé par l'unité de commande (11) qui arrête le ventilateur de compartiment d'aliments frais (7) lorsque la température (TFF) détectée par le capteur de compartiment d'aliments frais (9) est égale à ou inférieure à la seconde température de seuil (T2) qui est supérieure à la température de désactivation (TFFcut-out) du compartiment d'aliments frais (2).
  3. Un dispositif de refroidissement (1) selon la Revendication 1 ou 2, caractérisé par l'unité de commande (11) qui met en marche le ventilateur de compartiment d'aliments frais (7) aussi bien que le ventilateur de compartiment de congélation (8) à la première température de seuil (T1) qui est environnement 1°C inférieure à la température d'activation (TFFcut-in) du compartiment d'aliments frais (2).
  4. Un dispositif de refroidissement (1) selon la Revendication 1 ou 2, caractérisé par l'unité de commande (11) qui met en marche le ventilateur de compartiment d'aliments frais (7) aussi bien que le ventilateur de compartiment de congélation (8) à la première température de seuil (T1) qui est égale à la moitié de la somme de la valeur de température maximale (TFFmax) et la valeur de température minimale (TFFmin) détectées par le capteur de compartiment d'aliments frais (9) dans le précédent cycle de réfrigération.
  5. Un dispositif de refroidissement (1) selon l'une quelconque des revendications de 2 à 4, caractérisé par l'unité de commande (11) qui arrête le ventilateur de compartiment d'aliments frais (7) lorsque la température (TFF) détectée par le capteur de compartiment d'aliments frais (9) atteint à la seconde température de seuil (T2), qui est inférieure à la température de retour dernière (LRT) autant que la différence de température (ΔT) déterminée par le producteur, qui est enregistrée dans le cycle où le compresseur (4) est activé par le capteur de compartiment de congélation (10) après le cycle dernier où le compresseur (4) est actionné par le capteur de compartiment d'aliments frais (9), et qui est la valeur de température maximale détectée par le capteur de compartiment d'aliments frais (9).
  6. Une méthode de commande pour un dispositif de refroidissement (1) selon l'une quelconque des revendications précédentes, comprenant les étapes suivantes:
    • De mesurer les températures (TFF et TFRZ) détectées par le capteur de compartiment d'aliments frais (9) et le capteur de compartiment de congélation (10) (101),
    • De déterminer si ou non l'un des compartiments (2, 3) nécessite un refroidissement en fonction des températures (TFF et TFRZ) détectées par le capteur de compartiment d'aliments frais (9) et le capteur de compartiment de congélation (10) (102),
    • De mettre en marche le compresseur (4) si l'un des compartiments (2, 3) nécessite le refroidissement (103),
    • De contrôler si ou non le compresseur (4) est actionné par le capteur de compartiment d'aliments frais (9) ou le capteur de compartiment de congélation (10) (104),
    • De mettre en marche le ventilateur de compartiment d'aliments frais (7) et le ventilateur de compartiment de congélation (8) si le compresseur (4) n'est pas activé par le capteur de compartiment de congélation (10) (106),
    • De contrôler si ou non le compartiment d'aliments frais (2) est refroidit (107),
    • De contrôler si ou non le compartiment de congélation (3) est refroidit si le compartiment d'aliments frais (2) est refroidit (108),
    • D'arrêter le processus si le compartiment de congélation (3) est refroidit (109),
    • De contrôler la température (TFF) détectée par le capteur de compartiment d'aliments frais (9) si le compresseur (4) est actionné par le capteur de compartiment de congélation (10) (105),
    • De mettre en marche le ventilateur de compartiment d'aliments frais (7) et le ventilateur de compartiment de congélation (8) lorsque la température (TFF) détectée par le capteur de compartiment d'aliments frais (9) est supérieure à la première température de seuil (T1) (110),
    • De contrôler si ou non le capteur de compartiment d'aliments frais (9) a atteint à la seconde température de seuil (T2) (112),
    • D'arrêter le ventilateur de compartiment d'aliments frais (7) si la température détectée par le capteur de compartiment d'aliments frais (9) a atteint à la seconde température de seuil (T2) (113),
    • De mettre en marche le ventilateur de compartiment de congélation (8) si la température (TFF) détectée par le capteur de compartiment d'aliments frais (9) est inférieure à la première température de seuil (T1) (111),
    • De contrôler si ou non le compartiment de congélation (3) est refroidit (108),
    • D'arrêter le processus si le compartiment de congélation (3) est refroidit (109).
EP09799616A 2008-12-31 2009-12-17 Dispositif de refroidissement Active EP2370769B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200810081 2008-12-31
PCT/EP2009/067374 WO2010076229A2 (fr) 2008-12-31 2009-12-17 Dispositif de refroidissement

Publications (2)

Publication Number Publication Date
EP2370769A2 EP2370769A2 (fr) 2011-10-05
EP2370769B1 true EP2370769B1 (fr) 2012-08-22

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EP (1) EP2370769B1 (fr)
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WO (1) WO2010076229A2 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013182374A1 (fr) * 2012-06-06 2013-12-12 Arcelik Anonim Sirketi Dispositif de refroidissement ayant deux compartiments
CN109324646B (zh) * 2018-12-05 2021-07-30 上海亚泰仪表有限公司 一种小振幅快速温度控制装置及方法

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KR0149916B1 (ko) * 1994-11-11 1999-05-01 김광호 고효율 독립냉각 싸이클을 가지는 냉장고의 운전제어장치
EP1596143B1 (fr) * 1994-11-11 2007-03-21 Samsung Electronics Co, Ltd Procédé de commande d'un réfrigérateur
KR100208345B1 (ko) * 1996-04-02 1999-07-15 윤종용 냉장고의 온도제어방법 및 온도제어장치
KR100197697B1 (ko) * 1996-08-12 1999-06-15 윤종용 냉장실의 내기온도 상승방지 장치 및 방법
US20080178621A1 (en) * 2007-01-26 2008-07-31 Samsung Electronics Co., Ltd. Refrigerator and operation control method thereof

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Publication number Publication date
CN102272543A (zh) 2011-12-07
EP2370769A2 (fr) 2011-10-05
WO2010076229A3 (fr) 2010-08-26
WO2010076229A2 (fr) 2010-07-08
CN102272543B (zh) 2013-10-23

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