EP1730457B1 - Appareil réfrigérant et son procédé de commande - Google Patents

Appareil réfrigérant et son procédé de commande Download PDF

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Publication number
EP1730457B1
EP1730457B1 EP05708972.4A EP05708972A EP1730457B1 EP 1730457 B1 EP1730457 B1 EP 1730457B1 EP 05708972 A EP05708972 A EP 05708972A EP 1730457 B1 EP1730457 B1 EP 1730457B1
Authority
EP
European Patent Office
Prior art keywords
defrost
door
freshfood compartment
compartment
time
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
EP05708972.4A
Other languages
German (de)
English (en)
Other versions
EP1730457A1 (fr
Inventor
Turgay Arcelik Anonim Sirketi Ercan
Emre Arcelik Anonim Sirketi ARISOY
Yuksel Arcelik Anonim Sirketi Atilla
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
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Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP1730457A1 publication Critical patent/EP1730457A1/fr
Application granted granted Critical
Publication of EP1730457B1 publication Critical patent/EP1730457B1/fr
Anticipated expiration legal-status Critical
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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F25D21/006—Defroster control with electronic control circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • 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
    • F25B2600/23—Time delays
    • 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
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/02—Sensors detecting door opening
    • 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

  • This invention is related to a cooling device and control method wherein the yield is increased by avoiding unnecessary defrosts when the door is closed.
  • evaporator in cooling systems Since evaporator in cooling systems has the coolest surface inside the compartment that it is located in, moist air in the environment causes frost on the surface of evaporator. Frost accumulated on the surface of evaporator needs to be melted periodically by the defrosting process.
  • the period of defrosting process is determined by defrost control algorithms that are based on parameters such as the amount of frost on the evaporator, opening and closing frequency of the refrigerator's door or energy consumption; or defrosting takes place within predetermined constant time frames. Cooling efficiency is increased by avoiding frost with the defrosting process; however, since the operation requires high energy consumption, the increased energy consumption costs affect consumers. Therefore, the optimisation of the number of defrost processes and their timings provides decreased energy consumption.
  • Amount of frost accumulated on the evaporator is directly proportional to moisture level in the air that is circulating inside the cooling system. When the moisture level is high, frost accumulated increases. If the refrigerator's door stays open for a long time, since no air goes inside the refrigerator from outside, moisture level circulating in the air constantly decreases. In this case, frost accumulation on the evaporator takes a longer period. In order to decrease the energy consumption when the door is kept close for long periods, various defrost methods are developed.
  • the aim of this invention is to realize a cooling system and its control method where the defrost times are arranged so as to decrease the energy consumption cost of the user.
  • Cooling device (1) preferably a no-frost refrigerator, comprises a freshfood compartment (2) in which food and beverages are stored, a freezing compartment (3) in which foods are stored by being frozen, one or more doors (4) that enable access to the compartments (2 and 3), a compressor (5) that aids the execution of the cooling cycle, an evaporator (6) that provides cooling of the inner volume of the cooling device (1) by absorbing thermal energy, a defrost unit (7) that provides cleaning of frost accumulated on the evaporator (6), a thermometer (8) that enables measurement of the temperature inside the freshfood compartment (6), one or more door switches (11) that become open when the door is open and that go off when the door is closed, a control card (9) that determines the operation periods of defrost unit (7) based on constant or variable defrost algorithms, and that delays the operation period of defrost unit (7) until the temperature of the freshfood compartment (2) exceeds a predetermined limit temperature value in a predetermined latency time, if the door (4) is not
  • Control card (9) tracks the status of the door (4) that covers any of the compartments (2 and 3) via the position of door switch (11) after any defrost process executed by the defrost unit (7). Succeeding defrost time that is determined by the defrost algorithm is stored in the memory (10). If the door (4) is opened before the succeeding defrost time, in other words when the door switch (11) is turned on, defrost process is executed at the predetermined time. If the door (4) is kept close, in other words door switch (11) always remains off, defrost process is delayed by the control card (9). Information gathered from the thermometer (8) is controlled continuously; defrost process does not take place if the temperature of the freshfood compartment (2) does not exceed the limit temperature value.
  • control card (9) initiates the defrost unit (7) and defrost process is performed.
  • the longer period of the temperature of the freshfood compartment (2) exceeding the limit temperature value is an indication of the increasing amount of frost on the evaporator (6) and reveals the need for defrost process.
  • Limit temperature value (Ts) of the freshfood compartment (2), limit warming period (zs) of the freshfood compartment (2), defrost additional delay time (z2) and minimum time span (z3) between two defrost processes when the door (4) is closed are predetermined by the manufacturer and recorded on the memory (10).
  • Defrost process of the cooling device (1) is controlled as follows:
  • the minimum time span (z3) required to take place between successive defrost processes when the doors (4) are closed is determined.
  • the switch (11) is pressed but still a slight opening exists or in case hot food is loaded in the cooling device (1) or cooling is insufficient due to a failure (gas leakage etc.), since the temperature of the freshfood compartment (T1) would always remain above the limit temperature value (Ts) of the freshfood compartment (2), a continuous cycle of defrosting would be encountered.

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)
  • Defrosting Systems (AREA)

Claims (4)

  1. Un procédé de commande pour un dispositif de refroidissement (1) qui comprend un compartiment d' aliment frais (2) dans lequel sont stockés des aliments et des boissons, un compartiment de congélation (3) où les aliments sont stockés congelés, une ou plusieurs portes (4) qui permettent d'accéder aux compartiments (2 et 3), un compresseur (5) qui permet de réaliser le cycle de refroidissement, un évaporateur (6) qui assure le refroidissement du volume intérieur du dispositif de refroidissement (1) en absorbant l'énergie thermique, une unité de dégivrage (7) qui permet de nettoyer le givre accumulé sur l'évaporateur (6), un thermomètre (8) qui permet de mesurer la température à l'intérieur du compartiment des aliments frais (6), un ou plusieurs commutateurs de porte (11) qui s'allument lorsque la porte est ouverte et qui éteint lorsque la porte est fermée, une mémoire (10) qui stocke des informations telles que l'algorithme de dégivrage, le prochain temps de dégivrage et comprend en outre une carte de contrôle (9) qui détermine la durée de fonctionnement de l'unité de dégivrage (7) en fonction des algorithmes de dégivrage constants ou variables, et qui retarde la période d'opération de l'unité de dégivrage (7) jusqu'à ce que la température du compartiment d'aliments frais (2) dépasse une valeur de température limite prédéterminée dans un temps de latence prédéterminé, si la porte n'est pas ouverte après le dernier processus de dégivrage, ledit procédé comprenant les étapes consistant à déterminer un temps de dégivrage suivant (zd) après le processus de dégivrage (101); Contrôler si la porte (4) est ouverte (102); Si la porte (4) est ouverte, retarder le processus jusqu'au temps de dégivrage suivant (zd) (103); Effectuer le processus de dégivrage en actionnant l'unité de dégivrage (7) (106); Retourner à l'étape où le temps de dégivrage suivant est calculé (101); Si la porte (4) n'est pas ouverte, comparer la température du compartiment des aliments frais (T1) déterminée par le thermomètre (8) avec la valeur de température limite (Ts) du compartiment à aliments frais (2) (104); Si la température du compartiment des aliments frais (T1) est inférieure à la valeur de température limite du compartiment des aliments frais (2) (Ts), retourner à l'étape où la porte est fermée ou non est contrôlée (102);
    Si la température du compartiment des aliments frais (T1) est supérieure à la valeur de température limite du compartiment des alimenst frais (2) (Ts), comparer (105) l'intervalle de temps (z1) dans lequel la température du compartiment des aliments frais reste supérieure à la valeur de la température limite (Ts) du compartiment des aliments frais (2) avec une période de réchauffement limite (zs) du compartiment des aliments frais (2); Si l'intervalle de temps (z1) dans lequel la température du compartiment des aliments frais reste supérieur à la valeur de température limite (Ts) du compartiment des aliments frais (2) est inférieur à la période de réchauffement limite (zs) du compartiment des aliments frais (2), retourner à l'étape (102) où la porte est fermée ou non est contrôlée;
    Si l'intervalle de temps (z1) dans lequel la température du compartiment des aliments frais reste supérieur à la valeur de température limite (Ts) du compartiment des aliments frais (2) est supérieur à la période de réchauffement limite (zs) du compartiment des aliments frais (2), effectuer le processus de dégivrage en actionnant l'unité de dégivrage (7) (106); Retourner à l'étape où le temps de dégivrage suivant est calculé (101).
  2. Un procédé de commande selon la revendication 1, comprenant les étapes suivantes après l'étape où l'intervalle de temps (z1) dans lequel la température du compartiment des aliments frais reste au-dessus de la valeur de température limite (Ts) du compartiment des aliments frais (2) est comparé à la période limite de réchauffement (zs) du compartiment des aliments frais (2) (105); Si l'intervalle de temps (z1) dans lequel la température du compartiment des aliments frais (2) reste au-dessus de la valeur de température limite (Ts) du compartiment des aliments frais (2) est supérieur au temps de réchauffage limite (zs) du compartiment des aliments frais (2), vérifier l'intervalle de temps minimal (z3) entre deux processus de dégivrage successifs est terminée lorsque la porte (4) est fermée (201); Lorsque la porte (4) est fermée, si l'intervalle de temps minimal (z3) entre deux processus de dégivrage n'est pas terminé, retourner à l'étape (102) où la porte est fermée ou non est contrôlé; Lorsque la porte (4) est fermée, si l'intervalle de temps minimal (z3) entre deux processus de dégivrage est terminée, effectuer le processus de dégivrage en actionnant l'unité de dégivrage (7) (106).
  3. Un procédé de commande selon la revendication 1 ou 2, comprenant les étapes suivantes, après que l'étape à laquelle la porte (4) est ouverte ou non, est controllée (102); et la porte (4) s'est trouvée ouverte: contrôler si le temps de dégivrage suivant (zd) est atteint ou non (301); Si le temps de dégivrage suivant (zd) n'est pas atteint, retarder (103) le processus jusqu'au temps de dégivrage suivant (zd); Si le temps de dégivrage suivant (zd) est atteint, retarder (302) le processus pour un délai de dégivrage supplémentaire (z2); Effectuer le processus de dégivrage en actionnant l'unité de dégivrage (7) (106).
  4. Un dispositif de refroidissement (1) qui comprend un compartiment des aliments frais (2) dans lequel sont stockés des aliments et des boissons, un compartiment de congélation (3) où les aliments sont stockés congelés, une ou plusieurs portes (4) qui permettent l'accès aux compartiments (2 et 3), un compresseur (5) qui permet de réaliser le cycle de refroidissement, un évaporateur (6) qui permet un refroidissement du volume intérieur du dispositif de refroidissement (1) en absorbant l'énergie thermique, une unité de dégivrage (7) qui permet le nettoyage des givres accumulés sur l'évaporateur (6), un thermomètre (8) qui permet de mesurer la température à l'intérieur du compartiment des aliments frais (6), un ou plusieurs commutateurs de porte (11) qui s'allument lorsque la porte est ouverte et qui éteint lorsque la porte est fermée, une mémoire (10) qui stocke des informations telles que l'algorithme de dégivrage, le prochain temps de dégivrage, etc. et comprend en outre une carte de contrôle (9) qui détermine la période de fonctionnement de l'unité de dégivrage (7) basé sur la base d'algorithmes de dégivrage constants ou variables, caractérisé en ce que ladite carte de contrôle (9) retarde la période de fonctionnement de l'unité de dégivrage (7) jusqu'à ce que la température du compartiment des aliments frais (2) dépasse une valeur de température limite prédéterminée dans un temps de latence prédéterminé, si la porte n'est pas ouverte après le dernier processus de dégivrage et exécute le procède du contrôle selon l'une quelconque des revendications 1, 2 ou 3.
EP05708972.4A 2004-03-08 2005-03-08 Appareil réfrigérant et son procédé de commande Not-in-force EP1730457B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200400456 2004-03-08
PCT/IB2005/050846 WO2005088215A1 (fr) 2004-03-08 2005-03-08 Appareil refrigerant et son procede de commande

Publications (2)

Publication Number Publication Date
EP1730457A1 EP1730457A1 (fr) 2006-12-13
EP1730457B1 true EP1730457B1 (fr) 2017-06-28

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Application Number Title Priority Date Filing Date
EP05708972.4A Not-in-force EP1730457B1 (fr) 2004-03-08 2005-03-08 Appareil réfrigérant et son procédé de commande

Country Status (6)

Country Link
EP (1) EP1730457B1 (fr)
KR (1) KR100780101B1 (fr)
CN (1) CN100460788C (fr)
RU (1) RU2337283C2 (fr)
TR (1) TR200604831T1 (fr)
WO (1) WO2005088215A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2512740T3 (es) * 2010-04-12 2014-10-24 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Procedimiento para proceso de descongelación
ITTO20111240A1 (it) * 2011-12-30 2013-07-01 Indesit Co Spa Metodo e dispositivo di controllo della fase di sbrinamento di un apparecchio refrigerante ed apparecchio refrigerante che implementa tale metodo
WO2020135979A1 (fr) 2018-12-25 2020-07-02 Arcelik Anonim Sirketi Dispositif de refroidissement à consommation réduite en énergie
CN110873447B (zh) * 2019-11-29 2021-11-12 深圳麦克维尔空调有限公司 一种制冷空调的除霜控制方法、装置及设备
CN116294387A (zh) * 2023-03-14 2023-06-23 江苏省精创电气股份有限公司 制冷化霜方法、装置、终端及可读存储介质

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US4297852A (en) * 1980-07-17 1981-11-03 General Electric Company Refrigerator defrost control with control of time interval between defrost cycles
CN1028798C (zh) * 1987-05-18 1995-06-07 罗斯蒙德公司 组装式压力测量仪
SU1693331A1 (ru) * 1988-12-14 1991-11-23 Специальное Конструкторско-Технологическое Бюро С Опытным Производством Института Проблем Криобиологии И Криомедицины Ан Усср Устройство дл размораживани биоматериалов в контейнерах
US5483804A (en) * 1994-03-28 1996-01-16 Sanyo Electric Co., Ltd. Defrost control apparatus for refrigerator
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KR0182534B1 (ko) * 1994-11-17 1999-05-01 윤종용 냉장고의 제상장치 및 그 제어방법
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Also Published As

Publication number Publication date
KR100780101B1 (ko) 2007-11-30
CN100460788C (zh) 2009-02-11
WO2005088215A1 (fr) 2005-09-22
CN1934401A (zh) 2007-03-21
KR20060126808A (ko) 2006-12-08
RU2337283C2 (ru) 2008-10-27
RU2006135377A (ru) 2008-04-20
EP1730457A1 (fr) 2006-12-13
TR200604831T1 (tr) 2007-01-22

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