EP1730457A1 - A cooling device and its control method - Google Patents

A cooling device and its control method

Info

Publication number
EP1730457A1
EP1730457A1 EP05708972A EP05708972A EP1730457A1 EP 1730457 A1 EP1730457 A1 EP 1730457A1 EP 05708972 A EP05708972 A EP 05708972A EP 05708972 A EP05708972 A EP 05708972A EP 1730457 A1 EP1730457 A1 EP 1730457A1
Authority
EP
European Patent Office
Prior art keywords
defrost
door
freshfood compartment
time
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.)
Granted
Application number
EP05708972A
Other languages
German (de)
French (fr)
Other versions
EP1730457B1 (en
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
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
Publication of EP1730457A1 publication Critical patent/EP1730457A1/en
Application granted granted Critical
Publication of EP1730457B1 publication Critical patent/EP1730457B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 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.
  • Figure 1 is a schematic representation of a cooling device
  • Figure 2 is a flow chart of a cooling device control method
  • Figure 3 and 4 is a flow chart of alternative applications of a cooling device control method.
  • 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
  • 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).
  • thermometer (8) 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. If the temperature of the freshfood compartment (2) exceeds the limit value and remains above this limit value for a certain period, 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: - Succeeding defrost time (zd) is computed following the completion of the defrost process (101), - It is controlled whether the door (4) is opened (102), - Waited until the succeeding defrost time (zd), if the door is opened (103), - Defrost process is performed by operating the defrost unit (7) (106), - Returned to the step where the succeeding defrost time is computed (101), - If the door (4) is not opened, temperature of the freshfood compartment (Tl) determined by the thermometer (8) is compared (104) with the limit temperature value (Ts) of the freshfood compartment (2) , - Returned to the step (102) where it is controlled whether the door is closed or not if the temperature of the freshfood compartment (Tl) is lower than the limit temperature value of the freshfood compartment (2) (Ts), - If the temperature of the freshfood compartment (Tl) is higher than the limit
  • 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 (Tl) would always remain above the limit temperature value (Ts) of the freshfood compartment (2), a continuous cycle of defrosting would be encountered.
  • the following steps are performed: - If the time span (zl) in which the temperature of freshfood compartment (2) stays above the limit temperature value (Ts) of freshfood compartment (2) is higher than limit warming time (zs) of the freshfood compartment (2), it is checked whether the minimum time span (z3) between two successive defrost processes when the door (4) is closed, is passed or not (201), - Returned to the step (102) where it is controlled whether the door is closed or not if the minimum time span (z3) between two defrost processes when the door (4) is closed is not completed, , - If the minimum time span (z3) between two defrost process when the door (4) is closed is completed, defrost is performed by operating the defrost unit (7) (106) ( Figure
  • Defrost is performed by operating the defrost unit (7) (106) ( Figure 4).
  • the defrost unit (7) (106) ( Figure 4).
  • the defrost process is performed by taking into consideration the temperature of the freshfood compartment (Tl), which leads to less defrost processes and a decrease in energy consumption cost of the user.

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)

Abstract

This invention relates to a cooling device (1) which enables a decrease of the energy consumption cost of the user as a consequence of a decrease in the number of defrost procedures which is performed by taking into consideration the temperature of freshfood compartment (T1) during the defrost process taking place when the doors (4) are closed.

Description

Description A COOLING DEVICE AND ITS CONTROL METHOD
[001] 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.
[002] 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.
[003] 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.
[004] In the United States Patent no. US4297852, when the door of the refrigerator is not opened frequently, a secondary defrost method is initiated wherein the defrost decision is made according to the proportion of the period that the door is kept open to the period that the door is kept closed.
[005] In the European Patent Application no. EP1070925, when the door of the refrigerator is kept closed for long periods, a secondary defrost method is initiated wherein the defrost decision is made based on the difference between the temperatures of the evaporator and the inner volume of the refrigerator.
[006] 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.
[007] The cooling device and its control method designed to fulfil this aim is illustrated on the attached figures, where:
[008] Figure 1 is a schematic representation of a cooling device,
[009] Figure 2 is a flow chart of a cooling device control method, [010] Figure 3 and 4 is a flow chart of alternative applications of a cooling device control method.
[011] Components illustrated on the drawings are numbered individually and listed below.
[012] 1- Cooling device
[013] 2- Freshfood compartment
[014] 3- Freezing compartment
[015] 4- Door
[016] 5- Compressor
[017] 6- Evaporator
[018] 7- Defrost unit
[019] 8- Thermometer
[020] 9- Control card
[021] 10- Memory
[022] 11- Door switch
[023] 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 opened after the last defrost process , and a memory (10) that stores information such as defrost algorithm, next defrost time etc.
[024] 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. If the temperature of the freshfood compartment (2) exceeds the limit value and remains above this limit value for a certain period, 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.
[025] For the description of the cooling device (1) control method subject to the present invention, following symbols are used:
[026] zd: Succeeding defrost time
[027] Tl : Temperature of the freshfood compartment (2)
[028] Ts: Limit temperature value of the freshfood compartment (2)
[029] zl : Time span in which the temperature of the freshfood compartment stays above the limit temperature value (Ts) of the freshfood compartment (2)
[030] zs: Limit warming period of the freshfood compartment (2)
[031] z2: Defrost additional delay time
[032] z3: Minimum time span between two defrost process when the door (4) is closed
[033] 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).
[034] Defrost process of the cooling device (1) is controlled as follows: - Succeeding defrost time (zd) is computed following the completion of the defrost process (101), - It is controlled whether the door (4) is opened (102), - Waited until the succeeding defrost time (zd), if the door is opened (103), - Defrost process is performed by operating the defrost unit (7) (106), - Returned to the step where the succeeding defrost time is computed (101), - If the door (4) is not opened, temperature of the freshfood compartment (Tl) determined by the thermometer (8) is compared (104) with the limit temperature value (Ts) of the freshfood compartment (2) , - Returned to the step (102) where it is controlled whether the door is closed or not if the temperature of the freshfood compartment (Tl) is lower than the limit temperature value of the freshfood compartment (2) (Ts), - If the temperature of the freshfood compartment (Tl) is higher than the limit temperature value of the freshfood compartment (2) (Ts), time span (zl) in which the temperature of the freshfood compartment stays above the limit temperature value (Ts) of the freshfood compartment (2) is compared with the limit warming period (zs) of the freshfood compartment (2) (105), - If the time span (zl) in which the temperature of freshfood compartment stays above the limit temperature value (Ts) of freshfood compartment (2) is lower than the limit warming period (zs) of freshfood compartment (2), it is returned to the step (102), where it is controlled whether the door is closed or not, - If the time span (zl) in which the temperature of the freshfood compartment stays above the limit temperature value (Ts) of the freshfood compartment (2) is higher than the limit warming period (zs) of freshfood compartment (2), defrost is performed by operating the defrost unit (7) (106), - Returned to the step (101) where the succeeding defrost time is computed (Figure 2).
[035] In another embodiment of the invention, in order to avoid a cycle where continuous defrosting could occur, the minimum time span (z3) required to take place between successive defrost processes when the doors (4) are closed, is determined. When the door (4) is in its closed position, 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 (Tl) would always remain above the limit temperature value (Ts) of the freshfood compartment (2), a continuous cycle of defrosting would be encountered. In order to avoid that, in addition to the above mentioned steps, after the step of comparing the time span (zl) in which the temperature of freshfood compartment (2) stays above the limit temperature value (Ts) of freshfood compartment (2) to the limit warming time (zs) of freshfood compartment (2) (105), the following steps are performed: - If the time span (zl) in which the temperature of freshfood compartment (2) stays above the limit temperature value (Ts) of freshfood compartment (2) is higher than limit warming time (zs) of the freshfood compartment (2), it is checked whether the minimum time span (z3) between two successive defrost processes when the door (4) is closed, is passed or not (201), - Returned to the step (102) where it is controlled whether the door is closed or not if the minimum time span (z3) between two defrost processes when the door (4) is closed is not completed, , - If the minimum time span (z3) between two defrost process when the door (4) is closed is completed, defrost is performed by operating the defrost unit (7) (106) (Figure 3).
[036] In another embodiment of the invention, after the step where it is controlled whether the door is opened or not (102), if the door (4) is found to have been opened - Whether succeeding defrost time (zd) is reached or not is checked (301), - If the succeeding defrost time (zd) is not reached, the process is delayed until the next defrost time (zd) (103),
- If the next defrost time (zd) is reached, the process is delayed for additional defrost delay time (z2) (302),
- Defrost is performed by operating the defrost unit (7) (106) (Figure 4). For cooling devices (1), since no moisture level increase would occur as long as the door (4) is kept closed, frost accumulation on the evaporator (6) and the need for a defrost occur in a time interval longer than the normal operation conditions. When the doors (4) are closed, the defrost process is performed by taking into consideration the temperature of the freshfood compartment (Tl), which leads to less defrost processes and a decrease in energy consumption cost of the user.

Claims

Claims
[001] A cooling device (1) that comprises a freshfood compartment (2) in which food and beverages are stored, a freezing compartment (3) where the food is stored frozen, one or more doors (4) that enable access to the compartments (2 and 3), a compressor (5) that enables the cooling cycle to be performed, 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 the measurement of the temperature inside the freshfood compartment (6), one or more door switches (11) that turn on when the door is open and that turn off when the door is closed, a memory (10) that stores information such as defrost algorithm, next defrost time, etc. and characterized by; a control card (9) that determines the operation period 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 is not opened after the last defrost process.
[002] A control method for a cooling device (1) as described in Claim 1 comprising the steps of determining the succeeding defrost time (zd) after the defrost process (101); Controlling whether the door (4) is opened (102); If the door (4) is opened, delaying the process until the succeeding defrost time (zd) (103); Performing the defrost process by operating the defrost unit (7) (106); Returning to the step where the succeeding defrost time is computed (101); If the door (4) is not opened, comparing the temperature of freshfood compartment (Tl) determined by thermometer (8) with the limit temperature value (Ts) of freshfood compartment (2) (104); If the temperature of the freshfood compartment (Tl) is lower than the limit temperature value of the freshfood compartment (2) (Ts), returning to the step where whether the door is closed or not is controlled (102); If the temperature of freshfood compartment (Tl) is higher than the limit temperature value of freshfood compartment (2) (Ts), comparing (105) the time span (zl) in which the temperature of the freshfood compartment stays above the limit temperature value (Ts) of freshfood compartment (2) with the limit warming period (zs) of freshfood compartment (2); If the time span (zl) in which the temperature of the freshfood compartment stays above the limit temperature value (Ts) of the freshfood compartment (2) is lower than the limit warming period (zs) of freshfood compartment (2), returning to the step (102) where whether the door is closed or not is controlled; If the time span (zl) in which the temperature of freshfood compartment stays above the limit temperature value (Ts) of freshfood compartment (2) is higher than the limit warming period (zs) of freshfood compartment (2), performing the defrost process by operating the defrost unit (7) (106); Returning to the step where the succeeding defrost time is computed (101) (Figure 2).
[003] A control method as described in Claim 2, comprising the following steps after the step where the the time span (zl) in which the temperature of freshfood compartment stays above the limit temperature value (Ts) of freshfood compartment (2) is compared with the limit warming period (zs) of freshfood compartment (2) (105); If the time span (zl) in which the temperature of freshfood compartment (2) stays above the limit temperature value (Ts) of freshfood compartment (2) is higher than limit warming time (zs) of freshfood compartment (2), checking whether the minimum time span (z3) between two successive defrost processes, is completed when the door (4) is closed (201); When the door (4) is closed, if the minimum time span (z3) between two defrost processes is not completed, returning to the step (102) where whether the door is closed or not is controlled; When the door (4) is closed, if the minimum time span (z3) between two defrost processes is completed, performing the defrost process by operating the defrost unit (7) (106).
[004] A control method as described in Claim 2 or 3, comprising the following steps, after the step at which whether the door (4) is opened or not is controlled (102)is performed, andthe door (4) is found to have been opened: Controlling whether succeeding defrost time (zd) is reached or not (301); If the succeeding defrost time (zd) is not reached, delaying (103) the process until the following defrost time (zd); If the succeeding defrost time (zd) is reached, delaying (302) the process for an additional defrost delay time (z2); Performing the defrost process by operating the defrost unit (7) (106).
EP05708972.4A 2004-03-08 2005-03-08 A cooling device and its control method Not-in-force EP1730457B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200400456 2004-03-08
PCT/IB2005/050846 WO2005088215A1 (en) 2004-03-08 2005-03-08 A cooling device and its control method

Publications (2)

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

Family

ID=34961550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05708972.4A Not-in-force EP1730457B1 (en) 2004-03-08 2005-03-08 A cooling device and its control method

Country Status (6)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020135979A1 (en) 2018-12-25 2020-07-02 Arcelik Anonim Sirketi A cooling device with reduced energy consumption

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2512740T3 (en) * 2010-04-12 2014-10-24 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Defrosting process
ITTO20111240A1 (en) * 2011-12-30 2013-07-01 Indesit Co Spa METHOD AND DEVICE FOR CONTROL OF THE DEFROSTING PHASE OF A REFRIGERANT APPLIANCE AND A REFRIGERANT APPLIANCE THAT IMPLEMENTS THIS METHOD
CN110873447B (en) * 2019-11-29 2021-11-12 深圳麦克维尔空调有限公司 Defrosting control method, device and equipment of refrigeration air conditioner

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297852A (en) 1980-07-17 1981-11-03 General Electric Company Refrigerator defrost control with control of time interval between defrost cycles
CN1028798C (en) * 1987-05-18 1995-06-07 罗斯蒙德公司 Modular pressure instrument
US5483804A (en) 1994-03-28 1996-01-16 Sanyo Electric Co., Ltd. Defrost control apparatus for refrigerator
CN1034987C (en) * 1994-11-04 1997-05-28 广西大学 Iron cage dam (or dyke) technology for purification of waste water
DE19982011D2 (en) * 1998-10-05 2001-09-27 Powerpulse Holding Ag Zug Light element with a translucent surface
US6260365B1 (en) 2000-01-07 2001-07-17 Traulsen & Company, Inc. Control system and related methods for refrigeration and freezer units

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005088215A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020135979A1 (en) 2018-12-25 2020-07-02 Arcelik Anonim Sirketi A cooling device with reduced energy consumption

Also Published As

Publication number Publication date
KR20060126808A (en) 2006-12-08
RU2337283C2 (en) 2008-10-27
WO2005088215A1 (en) 2005-09-22
EP1730457B1 (en) 2017-06-28
RU2006135377A (en) 2008-04-20
CN100460788C (en) 2009-02-11
CN1934401A (en) 2007-03-21
KR100780101B1 (en) 2007-11-30
TR200604831T1 (en) 2007-01-22

Similar Documents

Publication Publication Date Title
CN107726712B (en) Refrigerator control method and refrigerator applying same
US6817195B2 (en) Reduced energy refrigerator defrost method and apparatus
US5564286A (en) Refrigerator defrost control apparatus and method
CA2409539C (en) Methods and apparatus for controlling compressor speed
EP3124898B1 (en) System and method of controlling refrigerator and freezer units to reduce consumed energy
US6606870B2 (en) Deterministic refrigerator defrost method and apparatus
US6631620B2 (en) Adaptive refrigerator defrost method and apparatus
JP2011038715A (en) Refrigerator
US8365541B2 (en) Method and apparatus using evaporator fan power requirements to determine defrost cycle for a refrigerator appliance
CN111089452A (en) Refrigerator control method and refrigerator applying same
JP2017015344A (en) refrigerator
CA2409641C (en) Sealed system multiple speed compressor and damping control
EP1730457B1 (en) A cooling device and its control method
KR101594386B1 (en) Methods for defrosting a kimchi refrigerator having a plural of evaporators
EP2433066B1 (en) A cooling device heated to prevent frosting
KR100593632B1 (en) Method of controlling defrost cycle of refrigerator and its device
US20160084565A1 (en) Refrigerator appliance and method of operating a refrigerator appliance
KR100821909B1 (en) Method for defrosting of refrigerator
EP2375198B1 (en) A method for defrosting process
WO2020135979A1 (en) A cooling device with reduced energy consumption
CN118202210A (en) Operating temperature region in super-cooled mode
JPH11237162A (en) Refrigerator
KR100323508B1 (en) A defrosting method for refrigerator
CN115839590A (en) Refrigerator and air duct deicing method thereof
KR20210026835A (en) Refrigerator and method for controlling defrosting of the same

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: 20060927

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 IS IT LI LT 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: 20130726

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: F25D 21/00 20060101AFI20170120BHEP

Ipc: F25D 11/02 20060101ALN20170120BHEP

RIC1 Information provided on ipc code assigned before grant

Ipc: F25D 21/00 20060101AFI20170202BHEP

Ipc: F25D 11/02 20060101ALN20170202BHEP

INTG Intention to grant announced

Effective date: 20170301

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

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 IS IT LI LT 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

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 905246

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170715

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602005052205

Country of ref document: DE

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

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: 20170628

Ref country code: LT

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: 20170628

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: 20170929

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20170628

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 905246

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170628

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

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: 20170928

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: 20170628

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: 20170628

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170628

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: 20170628

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: 20170628

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: 20170628

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: 20170628

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: 20170628

Ref country code: IS

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: 20171028

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: 20170628

Ref country code: IT

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: 20170628

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602005052205

Country of ref document: DE

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

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: 20170628

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: 20180329

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: 20170628

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602005052205

Country of ref document: DE

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: 20180308

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: 20170628

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20180331

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

Ref country code: LU

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

Effective date: 20180308

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: 20181002

Ref country code: IE

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

Effective date: 20180308

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

Ref country code: LI

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

Effective date: 20180331

Ref country code: GB

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

Effective date: 20180308

Ref country code: CH

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

Effective date: 20180331

Ref country code: BE

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

Effective date: 20180331

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: 20180331

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: 20170628

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: 20050308

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170628

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 NON-PAYMENT OF DUE FEES

Effective date: 20180308