KR20000021987A - Defrosting method of refrigerator - Google Patents

Defrosting method of refrigerator Download PDF

Info

Publication number
KR20000021987A
KR20000021987A KR1019980041295A KR19980041295A KR20000021987A KR 20000021987 A KR20000021987 A KR 20000021987A KR 1019980041295 A KR1019980041295 A KR 1019980041295A KR 19980041295 A KR19980041295 A KR 19980041295A KR 20000021987 A KR20000021987 A KR 20000021987A
Authority
KR
South Korea
Prior art keywords
defrosting
defrost
temperature
time
refrigerator
Prior art date
Application number
KR1019980041295A
Other languages
Korean (ko)
Inventor
최병준
Original Assignee
전주범
대우전자 주식회사
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 전주범, 대우전자 주식회사 filed Critical 전주범
Priority to KR1019980041295A priority Critical patent/KR20000021987A/en
Publication of KR20000021987A publication Critical patent/KR20000021987A/en

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
    • F25D21/004—Control mechanisms
    • 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
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/02—Refrigerators including a heater
    • 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
    • F25D2700/10—Sensors measuring the temperature of the evaporator
    • 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
    • F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer

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

PURPOSE: A defrosting method of a refrigerator is provided to remove the remaining ice of frost formed in a cooling machine by deciding the next time to apply an electric current, considering the applying time and the instant interrupting time of a defrosting heater when the instant interruption of an electric current occurs while defrosting. CONSTITUTION: A defrosting method of a refrigerator is performed by the steps of; producing the flowing time of a defrosting heater if power of a refrigerator is off while defrosting by feeding initial power of the refrigerator; confirming the temperature of a defrosting sensor when the instant interruption of an electric current occurs; checking the current defrosting temperature and outdoor temperature if the power is fed again; producing the next flowing time if the current defrosting temperature is lower than the set up temperature by comparing the current temperature with the randomly set up one; producing the next defrosting flowing time by operating the current defrosting temperature and outdoor temperature with the flowing time of the defrosting heater; and flowing an electric current to the defrosting heater according to the produced flowing time and turning off the defrosting heater after passing the produced time.

Description

냉장고의 제상 방법.Defrost method of the refrigerator.

본 발명은 냉장고의 제상 방법에 관한 것으로서, 특히 냉장고의 제상수행중 순간 정전의 발생시 제상히터 통전시간과 순간정전 시간 등을 고려하여 재통전 시간을 설정함으로써 효율적인 제상수행을 할 수 있도록 하는 냉장고의 제상 방법에 관한 것이다.The present invention relates to a method of defrosting a refrigerator. In particular, when a momentary power failure occurs during the defrosting of the refrigerator, the defrosting of the refrigerator can be efficiently performed by setting the re-energization time in consideration of the defrost heater energizing time and the instantaneous blackout time. It is about a method.

일반적으로 제상주기의 돌입시 고려해야할 조건은 압축기의 운전 누적시간(6,8,10시간), 압축기의 운전율(압축기 운전 누적시간 2시간 단위의 운전율), 압축기의 동작시간+압축기의 정지시간(60시간 이상), 도어 오픈 누적시간, 외기온도, 각종 센서의 에러(D-센서, F-센서, 외기온도 센서) 및 도어 스위치 에러 등이다.In general, the conditions to be considered during the defrost cycle are: cumulative compressor operation time (6, 8, 10 hours), compressor operation rate (compressor operation cumulative operation time 2 hours), compressor operation time + compressor stop Time (more than 60 hours), cumulative door open time, outside temperature, errors of various sensors (D-sensor, F-sensor, outside temperature sensor) and door switch error.

이러한 제상모드로의 돌입조건은 압축기의 운전 누적시간 6,8,10시간에 제상돌입 조건을 만족할 때 2시간 간격의 압축기 운전율이 80%이상일 경우, 상술한 제상돌입 조건을 만족하지 않을 때 도어 오픈 누적시간이 10분 이상일 경우, 외기온도 35도 이상시, 압축기 운전 누적시간 6시간 이상에서 각종 에러의 발생 시에 제상에 돌입하게 된다.The inrush condition to the defrost mode is a door that does not satisfy the above defrost inrush condition when the compressor operation rate is 2% or more when the defrost inrush condition is satisfied at 6, 8 and 10 hours of operation time of the compressor. When the open cumulative time is 10 minutes or more, when the outside temperature is 35 degrees or more and the compressor operation cumulative time is 6 hours or more, various types of errors occur and the defrost is started.

그리고, 압축기의 동작시간+압축기의 정지시간이 60시간 이상이면 즉시 제상모드로 돌입하게 된다.Then, if the operating time of the compressor + the stop time of the compressor is 60 hours or more, it immediately enters the defrost mode.

또한, 압축기의 운전 누적시간이 10시간 이상이면, 무조건 제상모드로 돌입하게 되는데, 통상의 경우 압축기의 누적시간이 10시간이 되면 제상으로 돌입하게 된다.In addition, if the cumulative operation time of the compressor is 10 hours or more, the defrost mode is unconditionally entered. In the usual case, when the cumulative time of the compressor reaches 10 hours, the compressor is defrosted.

한편, 제상모드는 프리쿨, 히터 제상, 휴지기, 팬지연 등의 과정을 거치게 되는데, 프리쿨(PRE-COOL)단계는 50분 동안 압축기, F-팬이 구동 온 되는 단계이며 시간(50분)이 경과되지 않아도 F-센서가 감지한 온도가 -27℃이하이면 플리쿨 기능은 오프된다.On the other hand, the defrost mode goes through the process of precooling, heater defrosting, rest period, fan delay, etc., Pre-COOL step is the step that the compressor, F-Fan is on for 50 minutes and time (50 minutes) Even if this time has not elapsed, the flick function is turned off if the temperature detected by the F-sensor is below -27 ° C.

히터(HTR)제상 단계에서는 D-센서가 감지한 온도가 10℃이상이면 히터가 오프되고, 한계시간은 80분이며, D-센서가 에러이면 한계시간 40분 동안 히터가 온으로 구동된다.In the defrosting step of the heater (HTR), the heater is turned off when the temperature detected by the D-sensor is 10 ° C. or more, and the limit time is 80 minutes. When the D-sensor is an error, the heater is driven on for 40 minutes.

휴지기는 4분 동안이며 압축기, F-팬, R-팬 모두 오프되고, 팬지연 시간은 5분이며 압축기만 온으로 구동된다.The pause period is 4 minutes, and the compressor, F-fan and R-fan are all off, the fan delay time is 5 minutes and only the compressor is turned on.

이러한 냉장고의 통상운전 중에는 냉장고의 압축기, F-팬, R-팬의 운전률에 대응하여 냉장고의 제상감지 센서(D-센서)가 감지하는 온도가 다양하게 변하게 된다.During normal operation of the refrigerator, the temperature detected by the defrost detection sensor (D-sensor) of the refrigerator varies in response to the operation rates of the compressor, the F-fan, and the R-fan of the refrigerator.

그런데, 이러한 냉장고의 제상수행 중 냉장고의 순간 정전시에는 냉장고의 통전시간 및 정전시간을 고려하지 않고 냉장고가 재통전을 수행함으로 냉장고 고내의 성에의 착상량이 증가하게 되는 문제점이 있다.However, there is a problem in that the amount of frost in the refrigerator is increased by performing the re-energization without considering the energization time and the blackout time of the refrigerator during the instantaneous power failure of the refrigerator during the defrosting of the refrigerator.

본 발명은 상기와 같은 문제점을 해결하기 위하여 창출된 것으로서, 제상수행중에 순간 정전의 발생시 제상히터 통전시간과 순간 정전시간을 고려하여 다음 재통전시간을 결정함으로써 냉각기에 생기는 성에의 잔빙을 제거할 수 있도록 하는 냉장고의 제상 방법을 제공하는데 그 목적이 있다.The present invention was created in order to solve the above problems, and when defrosting occurs during defrosting, the defrost heater energization time and the instantaneous interruption time are determined in consideration of the next re-energization time to remove frost remaining in the cooler. The purpose is to provide a defrosting method of the refrigerator.

도1은 본 발명에 따른 냉장고의 제상 방법에 대한 구성도,1 is a block diagram of a defrosting method of a refrigerator according to the present invention;

도2는 본 발명의 바람직한 실시예에 따른 플로우 차트이다.2 is a flow chart according to a preferred embodiment of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10...제상센서10 ... Defrost sensor

20...외기온도 센서20.Ambient temperature sensor

30...센서감지 회로30.Sensor detection circuit

40...마이컴40.Microcomputer

50...제상히터 구동부50.Defrost Heater Drive

60...제상히터60 ... Defrost Heater

상기 목적을 달성하는 본 발명 냉장고의 제상 방법은, 냉장고의 제상모드 수행중 전원의 오프시 제상히터 통전시간을 산정하는 단계와; 전원의 오프시 제상센서가 감지한 제상온도를 검출하는 단계와; 전원의 복귀시 제상센서가 감지한 제상온도 및 외기온도 센서가 감지한 외기온도를 검출하는 단계와; 전원의 복귀시 검출된 제상온도가 기설정된 임의의 설정온도 이상인지를 비교/판단하는 단계와; 전원의 복귀시 검출된 제상온도가 기설정된 임의의 설정온도 이하일 경우, 산정된 제상히터 통전시간과 전원의 복귀시 제상센서가 감지한 제상온도 및 외기온도를 연산하여 다음 통전 시간을 산정하는 단계와; 산정된 통전 시간에 따라 제상히터가 통전하는 단계와; 산정된 통전 시간이 경과되었는지를 판단하여 경과시 제상히터가 구동 오프되는 단계를 포함하여 된 것을 특징으로 한다.Defrosting method of the refrigerator of the present invention to achieve the above object comprises the steps of calculating the energization time of the defrost heater when the power is off during the defrost mode of the refrigerator; Detecting a defrost temperature sensed by the defrost sensor when the power is turned off; Detecting a defrost temperature sensed by the defrost sensor and an outside temperature sensed by the outside temperature sensor when the power is returned; Comparing / determining whether the detected defrost temperature at the return of the power supply is above a predetermined predetermined temperature; Calculating the next conduction time by calculating the defrost heater energization time and the defrost and ambient temperature detected by the defrost sensor when the power is returned when the defrost temperature detected when the power is returned is less than a predetermined preset temperature; and ; The defrost heater is energized according to the calculated energization time; It is characterized in that it comprises the step of driving off the defrost heater by determining whether the estimated energization time has elapsed.

상기와 같이 구성된 본 발명의 특징에 의하면, 본 발명에 따른 냉장고의 제상 방법은 냉장고의 제상중에 순간 정전이 발생할 경우 제상히터 통전시간과 순간정전 시간 등을 고려하여 재통전시 효과적인 제상수행을 할 수 있게 된다.According to the features of the present invention configured as described above, the defrosting method of the refrigerator according to the present invention can perform an effective defrosting when re-energizing in consideration of the defrost heater energizing time and instantaneous blackout time when a momentary power failure occurs during the defrost of the refrigerator. do.

이하, 첨부된 도면을 참조하면서 본 발명의 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도1은 본 발명 냉장고의 제상방법을 구성하는 구성도로써, 제상센서(10), 외기온도 센서(20), 센서 감지회로(30), 마이컴(40), 제상히터 구동부(50), 제상히터(60)를 포함한다.1 is a block diagram of the defrosting method of the present invention refrigerator, the defrost sensor 10, the outside temperature sensor 20, the sensor detection circuit 30, the microcomputer 40, the defrost heater driving unit 50, defrost heater (60).

이러한 구성에 있어서, 제상센서(10)는 D-센서(30)에 의해 냉장고의 제상온도(일반적으로 직류 레벨의 전압값)를 감지하는데, 감지된 제상온도를 센서감지 회로(30)를 통해 변환한 후 후술하는 마이컴(40)의 A/D(Analog to Digital)포트로 인가한다.In this configuration, the defrost sensor 10 detects the defrost temperature of the refrigerator (generally, the voltage value of the DC level) by the D-sensor 30, and converts the detected defrost temperature through the sensor detection circuit 30. Then it is applied to the A / D (Analog to Digital) port of the microcomputer 40 to be described later.

외기온도 센서(20)(RT-센서)는 냉장고 외부의 온도를 검출하여 센서감지 회로(30)를 통해 변환한 후 검출된 값을 후술하는 마이컴(40)의 A/D(Analog to Digital)포트로 인가한다.The outside temperature sensor 20 (RT-sensor) detects the temperature outside the refrigerator and converts it through the sensor sensing circuit 30, and then the A / D (Analog to Digital) port of the microcomputer 40 which describes the detected value later. Is applied.

또한, 마이컴(40)은 각각의 A/D(Analog to Digital)포트로 인가되어 디지털 변환된 검출된 냉장고의 적정 온도에 의거하여 F팬, R팬과 압축기를 독립적으로 구동 제어하고, 제상수행 조건이 되면 제상 히터(60)를 구동 제어하여 증발기에 부착되는 성에를 제거한다.In addition, the microcomputer 40 is independently supplied to each of the A / D (Analog to Digital) port to drive and control the F fan, R fan and the compressor independently based on the detected temperature of the digitally converted refrigerator, and the defrosting condition. In this case, the defrost heater 60 is driven to remove frost attached to the evaporator.

제상히터 구동부(50)는 마이컴(40)의 제어에 의거하여 소정 구동 신호를 제상 히터(60)로 출력하며, 제상 히터(60)는 증발기에 부착되는 성에를 제거하기 위한 히터로서, 증발기에 장착되어 제상히터 구동부(50)로부터의 구동 신호에 의거하여 발열되어 증발기에 부착된 성에를 융해 제거한다.The defrost heater driver 50 outputs a predetermined drive signal to the defrost heater 60 under the control of the microcomputer 40, and the defrost heater 60 is a heater for removing frost attached to the evaporator and is mounted on the evaporator. In accordance with the drive signal from the defrost heater driving unit 50 is generated to melt and remove the frost attached to the evaporator.

다음에, 상술한 구성부를 포함하는 본 발명의 바람직한 실시예에 따른 냉장고의 제상방법의 동작과정을 첨부한 도2의 흐름도를 참조하여 상세히 설명한다.Next, an operation process of the defrosting method of the refrigerator according to the preferred embodiment of the present invention including the above-described component will be described in detail with reference to the flowchart of FIG. 2.

먼저, 냉장고의 초기전원이 온되어(단계100) 제상수행 중에 냉장고의 전원이 오프될 경우(단계110) 제상히터의 통전시간을 산정하게 된다.(단계120)First, when the initial power of the refrigerator is turned on (step 100) and the power of the refrigerator is turned off during the defrosting operation (step 110), the energization time of the defrost heater is calculated.

이어서, 순간 정전시에 제상센서가 감지한 제상센서의 온도를 확인하게 된다.(단계130)Subsequently, the temperature of the defrost sensor detected by the defrost sensor at the moment of power failure is checked.

다음에 전원이 복귀되었을 경우 제상 센서가 감지한 현재의 제상온도(단계140) 및 외기온도 센서가 감지한 현재의 외기온도를 체크하게 된다.(단계150)Next, when the power is restored, the current defrost temperature detected by the defrost sensor (step 140) and the current outside temperature detected by the outside temperature sensor are checked.

현재의 제상온도와 기설정된 임의의 설정온도를 비교/판단하여(단계160) 현재의 제상온도가 설정온도 이하일 경우 다음의 통전시간을 산정하게 된다.(단계170)The current defrost temperature is compared with the predetermined predetermined temperature (step 160), and when the current defrost temperature is lower than the set temperature, the next energization time is calculated.

이어서, 상술된 제상히터 통전시간과 현재의 제상온도와 외기온도를 연산하여 다음의 제상 통전시간을 산정하게 된다.Subsequently, the next defrost energization time is calculated by calculating the defrost heater energization time, the current defrost temperature, and the outside air temperature.

산정된 통전시간에 따라 제상히터가 통전하고,(단계180) 산정시간의 경과시(단계190) 제상히터가 오프되어(단계200) 통상운전을 하게 된다.(단계210)The defrost heater is energized according to the calculated energization time (step 180), and when the calculation time elapses (step 190), the defrost heater is turned off (step 200) to perform normal operation.

본 발명에 따른 냉장고의 제상방법은 냉장고의 제상 수행중 순간정전의 발생시 생기는 성에의 잔빙을 제거하여 냉장고의 냉각수행을 효과적으로 할 수 있게 된다.The defrosting method of the refrigerator according to the present invention can effectively perform the cooling operation of the refrigerator by removing the remaining ice that occurs when the momentary power failure occurs during the defrosting of the refrigerator.

Claims (1)

냉장고의 제상모드 수행중 전원의 오프시 제상히터 통전시간을 산정하는 단계와,Calculating a defrost heater energizing time when the power is turned off during the defrost mode of the refrigerator; 상기 전원의 오프시 제상센서가 감지한 제상온도를 검출하는 단계와,Detecting a defrost temperature detected by a defrost sensor when the power is off; 상기 전원의 복귀시 제상센서가 감지한 제상온도 및 외기온도 센서가 감지한 외기온도를 검출하는 단계와,Detecting a defrost temperature sensed by a defrost sensor and an outside temperature sensed by an outside temperature sensor when the power is returned; 상기 전원의 복귀시 검출된 제상온도가 기설정된 임의의 설정온도 이상인지를 비교/판단하는 단계와,Comparing / determining whether the defrost temperature detected at the time of return of the power supply is above a predetermined predetermined temperature; 상기 전원의 복귀시 검출된 제상온도가 기설정된 임의의 설정온도 이하일 경우, 상기 산정된 제상히터 통전시간과 상기 전원의 복귀시 제상센서가 감지한 제상온도 및 상기 외기온도를 연산하여 다음 통전 시간을 산정하는 단계와,When the defrost temperature detected at the return of the power supply is below a predetermined predetermined temperature, the calculated defrost heater energization time, the defrost temperature detected by the defrost sensor at the return of the power supply, and the outside air temperature are calculated to calculate the next conduction time. Calculating steps, 상기 산정된 통전 시간에 따라 제상히터가 통전하는 단계와,The defrost heater is energized according to the calculated energization time; 상기 산정된 통전 시간이 경과되었는지를 판단하여 경과시 제상히터가 구동오프되는 단계를 포함하여 된 것을 특징으로 하는 냉장고의 제상 방법.The defrosting method of the refrigerator, characterized in that the defrosting heater is driven off when it is determined whether the estimated energization time has elapsed.
KR1019980041295A 1998-09-30 1998-09-30 Defrosting method of refrigerator KR20000021987A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019980041295A KR20000021987A (en) 1998-09-30 1998-09-30 Defrosting method of refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980041295A KR20000021987A (en) 1998-09-30 1998-09-30 Defrosting method of refrigerator

Publications (1)

Publication Number Publication Date
KR20000021987A true KR20000021987A (en) 2000-04-25

Family

ID=19552908

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019980041295A KR20000021987A (en) 1998-09-30 1998-09-30 Defrosting method of refrigerator

Country Status (1)

Country Link
KR (1) KR20000021987A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100946137B1 (en) * 2004-12-15 2010-03-10 현대중공업 주식회사 Signal Line System of Valve
CN107504747A (en) * 2017-08-28 2017-12-22 合肥美的电冰箱有限公司 Defrosting control method, control system and refrigerator
CN111365930A (en) * 2020-03-23 2020-07-03 海信（山东）冰箱有限公司 Refrigerator and defrosting method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100946137B1 (en) * 2004-12-15 2010-03-10 현대중공업 주식회사 Signal Line System of Valve
CN107504747A (en) * 2017-08-28 2017-12-22 合肥美的电冰箱有限公司 Defrosting control method, control system and refrigerator
CN111365930A (en) * 2020-03-23 2020-07-03 海信（山东）冰箱有限公司 Refrigerator and defrosting method thereof

Similar Documents

Publication Publication Date Title
US6205800B1 (en) Microprocessor controlled demand defrost for a cooled enclosure
US6058724A (en) Refrigerator defrost controlling method
JPH0894234A (en) Defrosting device for refrigerator
KR20000021987A (en) Defrosting method of refrigerator
CN110207328B (en) Control method and device of air conditioner, storage medium and air conditioner
KR100292187B1 (en) Defrost cycle variable method
KR19980017690A (en) How to control refrigerator defrosting machine
KR0148171B1 (en) Airconditioner with temperature sensor current control device
US20030074907A1 (en) System and a method of automatic defrost for a refrigeration appliance
KR940009230B1 (en) Refrigerator
JP2003207255A (en) Refrigerator and its control method
KR100271682B1 (en) Variable method for de-frost period in a refrigerator
KR19990046211A (en) Defrost cycle control method of the refrigerator
JP2003146187A (en) Wiper control device
JPH05264161A (en) Control device for defrosting of cold storage system
EP1175585B1 (en) Microprocessor controlled demand defrost for a cooled enclosure
JPH11201609A (en) Method and apparatus for controlling electric refrigerator
JPH0510655A (en) Defrosting control device of refrigerator
KR19980017691A (en) Apparatus and method for returning abnormal operation of a defrost heater in a refrigerator
KR0129510B1 (en) Defrosting control method of a refrigerator
KR20000027997A (en) Method of controlling high speed mode of refrigerator
KR100577418B1 (en) Refrigerator and Control Method Thereof
KR20000009996U (en) Defrost mode display device of the refrigerator
KR19990061276A (en) Defective Sensor Defect Detection Method for Refrigerator
KR0176893B1 (en) Defrost Control Device and Method of Refrigerator

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination