CN100460788C - A cooling device and its control method - Google Patents

A cooling device and its control method Download PDF

Info

Publication number
CN100460788C
CN100460788C CNB2005800074216A CN200580007421A CN100460788C CN 100460788 C CN100460788 C CN 100460788C CN B2005800074216 A CNB2005800074216 A CN B2005800074216A CN 200580007421 A CN200580007421 A CN 200580007421A CN 100460788 C CN100460788 C CN 100460788C
Authority
CN
China
Prior art keywords
fresh
keeping chamber
door
defrost
defrosting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2005800074216A
Other languages
Chinese (zh)
Other versions
CN1934401A (en
Inventor
T·厄坎
E·阿里索伊
Y·阿蒂拉
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 CN1934401A publication Critical patent/CN1934401A/en
Application granted granted Critical
Publication of CN100460788C publication Critical patent/CN100460788C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • 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
    • 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
    • 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
    • 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

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

Cooling device and control method thereof
Technical field
The present invention relates to a kind of cooling device and control method thereof, raise the efficiency by avoiding unnecessary at closing time defrosting.
Background technology
Because the evaporimeter in the cooling system has the coldest surface in the inside of the chamber at place, the humid air in the environment causes the evaporator surface frosting.The frost of evaporator surface accumulation need regularly be melted by defrost process.The cycle of defrost process is by the quantity based on frost on the evaporimeter for example, the defrosting control algolithm decision of the parameter that the switching frequency of refrigerator doors or energy consume; Or defrosting occurs in the predetermined constant time range.Cooling effectiveness avoids frosting to improve by defrost process; Yet, defrost operation energy consumption height, the increase that energy consumption increases consumer's expense.Best defrosting number of times and the time function cut down the consumption of energy.
The long-pending frost amount of evaporator surface directly is proportional to the humidity of the air that circulates in cooling system.When humidity was high, long-pending frost increased.If refrigerator doors keeps closing for a long time, because there is not air to enter in the refrigerator from the outside, the humidity that circulates in the air continues to descend.In this case, the long-pending frost of evaporimeter needs the longer time.Energy consumption when closing for a long time in order to reduce a maintenance, different Defrost methods are suggested.
In the U.S. Pat 4297852, when refrigerator doors was not often opened, second Defrost method was to introduce when making the defrosting decision in the time that is held open according to door with the ratio that keeps the shut-in time.
In the European patent application EP 1070925, when refrigerator doors kept closing for a long time, second Defrost method was based on the difference between evaporator temperature and the refrigerator inside capacity and makes when defrosting determines and introducing.
Summary of the invention
The objective of the invention is to realize a kind of cooling system and control method thereof, defrosting time is set to reduce user's energy consumption cost.
Description of drawings
Accompanying drawing has been described cooling device and the control method thereof that is designed in order to satisfy this purpose, wherein:
Fig. 1 is the schematic diagram of cooling device.
Fig. 2 is the block diagram of cooling device control method.
Fig. 3 and 4 is flow charts of another example of cooling device control method.
The parts of describing among the figure are numbered separately and are listed.
The 1-cooling device
The 2-fresh-keeping chamber
The 3-refrigerating chamber
The 4-door
The 5-compressor
The 6-evaporimeter
The 7-defrost unit
The 8-thermometer
The 9-control panel
The 10-memory
The 11-door switch
The specific embodiment
Cooling device (1), frost-free refrigerator preferably, comprise the fresh-keeping chamber (2) that stores F﹠B, food is frozen the refrigerating chamber (3) of storage, one or more doors (4) that can lead to chamber (2 and 3), help to implement the compressor (5) of cool cycles, by absorbing the evaporimeter (6) of heat energy cooling cooling device (1) internal capacity, remove the defrost unit (7) of the long-pending frost on the evaporimeter (6), the thermometer (8) of energy measurement fresh-keeping chamber (6) internal temperature, one or more door switch (11) of when door is opened, opening and when door is closed, regaining, determine the defrost unit control panel of (7) cycle of operation (9) based on constant or variable defrosting algorithm, if and door (4) is not in the end opened after a defrost process, the cycle of operation that control panel (9) postpones defrost unit (7) surpasses default limiting temperature value up to the temperature of fresh-keeping chamber (2) in the default stand-by period, and stores the algorithm that for example defrosts, the memory (10) of information such as next defrosting time.
Control panel (9) writes down the state of the door (4) of any chamber (2 and 3) by the position of door switch (11) after any defrost process that defrost unit (7) is implemented.The defrosting time of being determined by the defrosting algorithm subsequently is stored in memory (10) lining.If door (4) is opened before defrosting time subsequently, that is to say door switch (11) when opening, defrost process is implemented at Preset Time.If door (4) keeps closing, that is to say that door switch (11) always keeps retracted state, defrost process is delayed by control panel (9).Continuous control thermometer (8) collection information; The temperature value if the temperature of fresh-keeping chamber (2) does not overstep the extreme limit does not carry out defrost process.If temperature value of overstepping the extreme limit of fresh-keeping chamber (2) and keep certain hour on limiting value, control panel (9) start defrost unit (7) and carry out defrost process.The longer cycle of temperature value of overstepping the extreme limit of fresh-keeping chamber (2) is that upward the indication and the expression of the quantity increase of frost need defrost process to an evaporimeter (6).
To belong to cooling device of the present invention (1) control method in order describing, to use following symbol:
Zd: defrosting time subsequently
T1: the temperature of fresh-keeping chamber (2)
Ts: the limiting temperature value of fresh-keeping chamber (2)
Z1: the temperature of fresh-keeping chamber remains on the time interval on the limiting temperature value (Ts) of fresh-keeping chamber (2)
Zs: the limit heating cycle of fresh-keeping chamber (2)
Z2: defrost additional delay time
Z3: door (4) is the minimum interval between two defrost process when closing
The limiting temperature value (Ts) of fresh-keeping chamber (2), the limit heating cycle (zs) of fresh-keeping chamber (2), defrost additional delay time (z2) and door (4) when closing the minimum interval (z3) between two defrost process be that the producer presets and be recorded in memory (10) lining.
The control of the defrost process of cooling device (1) is as follows:
-along with defrost process finish calculating defrosting time (zd) (101) subsequently,
-whether open and control (102) by door (4),
If-door is unlocked, then wait for defrosting time (zd) (103) up to subsequently,
-operation defrost unit (7) is carried out defrost process (106),
-return the step (101) of calculating defrosting time subsequently,
If-door (4) is not opened, compare (104) by the temperature (T1) of the definite fresh-keeping chamber of thermometer (8) and the limiting temperature value (Ts) of fresh-keeping chamber (2),
If the temperature of-fresh-keeping chamber (T1) is lower than the limiting temperature value (Ts) of fresh-keeping chamber (2), then return by door (4) whether close the step of controlling (102),
If the temperature (T1) of-fresh-keeping chamber (2) is higher than the limiting temperature value (Ts) of fresh-keeping chamber (2), then the temperature of fresh-keeping chamber compares (105) at the limit heating cycle (zs) that remains on the time interval (z1) and fresh-keeping chamber (2) on the limiting temperature value (Ts) of fresh-keeping chamber (2)
Be lower than the limit heating cycle (zs) of fresh-keeping chamber (2) if the temperature of-fresh-keeping chamber remains on time interval (z1) on the limiting temperature value (Ts) of fresh-keeping chamber (2), then return step (102), whether close by door (4) and control,
Be higher than the limit heating cycle (zs) of fresh-keeping chamber (2) if the temperature of-fresh-keeping chamber remains on time interval (z1) on the limiting temperature value (Ts) of fresh-keeping chamber (2), then move defrost unit (7) and carry out defrosting (106),
-return the step (101) (accompanying drawing 2) of calculating defrosting time subsequently,
In the another embodiment of the present invention, for fear of defrosting continuously takes place in a circulation, the minimum interval (z3) that produces in the required continuous defrost process when closing at door (4) is determined.When door (4) is in the closed position, switch (11) is depressed but still opens slightly, or the food of the hypothesis heat cooling device (1) of packing into, or owing to fault (gas leakage etc.) is cooled off not enough, because the temperature (T1) of fresh-keeping chamber always is on the limiting temperature value (Ts) of fresh-keeping chamber (2), continuous defrost cycle can occur.For fear of this situation, except that above-mentioned steps, the time interval (z1) on the temperature of fresh-keeping chamber remains on the limiting temperature value (Ts) of fresh-keeping chamber (2) with compare the step of (105) limit heating cycle (zs) of fresh-keeping chamber (2) after, carry out following steps:
If remaining on time interval (z1) on the limiting temperature value (Ts) of fresh-keeping chamber (2), the temperature of-fresh-keeping chamber (2) is higher than the limit heating cycle (zs) of fresh-keeping chamber (2), check and whether to have passed through door (4) minimum interval (z3) (201) in two continuous defrost process when closing
If-minimum interval (z3) in two defrost process of door (4) when closing is not finished, then return by door (4) whether close the step of controlling (102),
If-minimum interval (z3) in two defrost process of door (4) when closing is finished, then move defrost unit (7) and carry out defrosting (106) (accompanying drawing 3),
In the another embodiment of the present invention, whether opening the step (102) controlled afterwards, be opened if find door (4) by door (4)
-check whether defrosting time (zd) subsequently reaches (301),
If-not reaching defrosting time (zd) subsequently, process lag is up to next defrosting time (zd) (103),
If-reaching next defrosting time (zd), process lag is to defrost additional delay time (z2) (302),
-operation defrost unit (7) is carried out defrosting (106) (accompanying drawing 4),
For cooling device (1), owing to needing only the situation generation that door (4) maintenance is closed does not just have humidity to increase, the long-pending frost on the evaporimeter (6) occur in a longer time interval of the common service condition of ratio with needing to defrost.When door (4) when being closed, carry out the temperature (T1) that defrost process is considered fresh-keeping chamber, to such an extent as to reduce defrost process and user's energy consumption cost reduces.

Claims (4)

1. a cooling device (1) comprising:
Store the fresh-keeping chamber (2) of F﹠B;
Food is frozen the refrigerating chamber (3) of storage;
One or more doors (4) that can lead to fresh-keeping chamber (2) and refrigerating chamber (3);
Can carry out the compressor (5) of cool cycles;
By absorbing the evaporimeter (6) of heat energy cooling cooling device (1);
Remove the defrost unit (7) of the long-pending frost on the evaporimeter (6);
The thermometer (8) of energy measurement fresh-keeping chamber (2) internal temperature;
One or more door switch (11) of when door is opened, opening and when door is closed, regaining;
Storage comprises the memory (10) of the information of defrosting algorithm, next defrosting time;
It is characterized in that; Control panel (9) is determined the cycle of operation of defrost unit (7) based on constant or variable defrosting algorithm, if door (4) is not in the end opened after a defrost process, the cycle of operation that postpones defrost unit (7) surpasses default limiting temperature value up to the temperature of fresh-keeping chamber (2) in the default stand-by period.
2. the control method of cooling device as claimed in claim 1 (1), its step comprises:
Finish decision defrosting time (zd) (101) subsequently along with defrost process;
In step (101) afterwards, whether control gate (4) opens (102);
If door (4) is unlocked, then wait for defrosting time (zd) (103) up to subsequently;
In step (103) afterwards, operation defrost unit (7) is carried out defrost process (106);
In step (106) afterwards, return the step (101) of calculating defrosting time subsequently;
If door (4) is not opened, in step (102) afterwards, relatively by the temperature (T1) of the definite fresh-keeping chamber of thermometer (8) and the limiting temperature value (Ts) (104) of fresh-keeping chamber (2);
If the temperature of fresh-keeping chamber (T1) is lower than the limiting temperature value (Ts) of fresh-keeping chamber (2), then return the step (102) whether control gate (4) closes;
If the temperature of fresh-keeping chamber (T1) is higher than the limiting temperature value (Ts) of fresh-keeping chamber (2), then relatively the temperature of fresh-keeping chamber remains on the limit heating cycle (zs) (105) of the time interval (z1) and fresh-keeping chamber (2) on the limiting temperature value (Ts) of fresh-keeping chamber (2);
Be lower than the limit heating cycle (zs) of fresh-keeping chamber (2) if the temperature of fresh-keeping chamber remains on time interval (z1) on the limiting temperature value (Ts) of fresh-keeping chamber (2), then return the step (102) whether control gate (4) closes;
Be higher than the limit heating cycle (zs) of fresh-keeping chamber (2) if the temperature of fresh-keeping chamber remains on time interval (z1) on the limiting temperature value (Ts) of fresh-keeping chamber (2), then move defrost unit (7) and carry out defrosting (106);
In step (106) afterwards, return the step (101) of calculating defrosting time subsequently.
3. control method as claimed in claim 2, the time interval (z1) on the temperature of fresh-keeping chamber remains on the limiting temperature value (Ts) of fresh-keeping chamber (2) with compare the step of (105) limit heating cycle (zs) of fresh-keeping chamber (2) after, may further comprise the steps:
Be higher than the limit heating cycle (zs) of fresh-keeping chamber (2) if the temperature of fresh-keeping chamber (2) remains on time interval (z1) on the limiting temperature value (Ts) of fresh-keeping chamber (2), inspection door (4) when closing the minimum interval (z3) in two continuous defrost process whether finish (201);
When closing,, then return the step (102) whether control gate (4) closes at door (4) if the minimum interval in the defrost process (z3) is not finished;
,, then move defrost unit (7) and carry out defrosting (106) when closing at door (4) if the minimum interval in the defrost process (z3) is finished.
4. as claim 2 or 3 described control methods, carrying out the step (102) whether control gate (4) closes, and after finding that door (4) has been opened, may further comprise the steps:
Check whether defrosting time (zd) subsequently reaches (301);
If do not reach defrosting time (zd) subsequently, wait for up to next defrosting time (zd) (103);
If reach next defrosting time (zd), wait for up to defrost additional delay time (z2) (302);
In step (302) afterwards, operation defrost unit (7) is carried out defrosting (106).
CNB2005800074216A 2004-03-08 2005-03-08 A cooling device and its control method Expired - Fee Related CN100460788C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200400456 2004-03-08
TR2004/00456 2004-03-08

Publications (2)

Publication Number Publication Date
CN1934401A CN1934401A (en) 2007-03-21
CN100460788C true CN100460788C (en) 2009-02-11

Family

ID=34961550

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005800074216A Expired - Fee Related CN100460788C (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)

Families Citing this family (4)

* 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
PL3903049T3 (en) 2018-12-25 2024-01-03 Arçelik Anonim Sirketi A cooling device with reduced energy consumption
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1065334A (en) * 1987-05-18 1992-10-14 罗斯蒙德公司 Modular pressure instrument
CN1105899A (en) * 1994-11-04 1995-08-02 广西大学 Iron cage dam (or dyke) technology for purification of waste water
US20010054292A1 (en) * 2000-01-07 2001-12-27 Ronald Davis Control system and related methods for refrigeration and freezer units

Family Cites Families (3)

* 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
US5483804A (en) 1994-03-28 1996-01-16 Sanyo Electric Co., Ltd. Defrost control apparatus for refrigerator
JP2002526741A (en) * 1998-10-05 2002-08-20 パワーパルス・ホールディング・アクチェンゲゼルシャフト Optical element having light transmitting surface

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1065334A (en) * 1987-05-18 1992-10-14 罗斯蒙德公司 Modular pressure instrument
CN1105899A (en) * 1994-11-04 1995-08-02 广西大学 Iron cage dam (or dyke) technology for purification of waste water
US20010054292A1 (en) * 2000-01-07 2001-12-27 Ronald Davis Control system and related methods for refrigeration and freezer units

Also Published As

Publication number Publication date
EP1730457A1 (en) 2006-12-13
RU2006135377A (en) 2008-04-20
EP1730457B1 (en) 2017-06-28
RU2337283C2 (en) 2008-10-27
CN1934401A (en) 2007-03-21
KR100780101B1 (en) 2007-11-30
WO2005088215A1 (en) 2005-09-22
KR20060126808A (en) 2006-12-08
TR200604831T1 (en) 2007-01-22

Similar Documents

Publication Publication Date Title
CN106247742B (en) A kind of refrigerator freezing fan defrosting device and its control method
CN102257340B (en) Refrigerator and method for the temperature control in a refrigerator
CN108106298A (en) Refrigerator, the defrosting control device of refrigerator and method
EP2395304B1 (en) Control method for refrigerator
CN101382375A (en) Defrosting control method for frost-free refrigerator
US11668512B2 (en) Refrigerator and method for controlling the same
US8365541B2 (en) Method and apparatus using evaporator fan power requirements to determine defrost cycle for a refrigerator appliance
CN102589182B (en) Refrigeration system, refrigerator having the refrigeration system and controlling method of the refrigerator
CN109798713A (en) Three-circulation wind cold refrigerator and its defrosting method
AU2018202123B2 (en) Refrigerator and method for controlling the same
CN106679323A (en) Air cooling refrigerator and running control method thereof
CN100460788C (en) A cooling device and its control method
KR101314621B1 (en) Controlling method for the refrigerator
CN106610173A (en) Air-cooling refrigerator and operation control method thereof
CN101995131A (en) Refrigerator
CN109780776B (en) Refrigerator and control method thereof
CN102287982A (en) Defrosting refrigerator and control method thereof
CN108278832B (en) Internet of things refrigerator with defrosting function and working method thereof
CN112432413A (en) Defrosting system for refrigerator and air-cooled refrigerator
KR100885450B1 (en) A control method of refrigerator
KR101317307B1 (en) Refrigerator and control method thereof
JP7474113B2 (en) Defrost control device for refrigerator
CN202660831U (en) Refrigerator
CN116465149A (en) Defrosting control method of refrigeration equipment
CN117722798A (en) Intelligent defrosting control method for air-cooled refrigeration equipment

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090211

Termination date: 20180308

CF01 Termination of patent right due to non-payment of annual fee