KR20020022237A - Control method of refrigerator system - Google Patents
Control method of refrigerator system Download PDFInfo
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- KR20020022237A KR20020022237A KR1020000054937A KR20000054937A KR20020022237A KR 20020022237 A KR20020022237 A KR 20020022237A KR 1020000054937 A KR1020000054937 A KR 1020000054937A KR 20000054937 A KR20000054937 A KR 20000054937A KR 20020022237 A KR20020022237 A KR 20020022237A
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- refrigerator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/10—Sensors measuring the temperature of the evaporator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
- F25D2700/121—Sensors measuring the inside temperature of particular compartments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/16—Sensors measuring the temperature of products
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
본 발명은 냉장고의 제어 방법에 관한 것으로서, 특히 과부하 영역에서의 초기 기동시 냉장고에 걸리는 부하의 크기에 따라 응축팬과 증발팬의 속도를 조절하는 냉장고의 제어 방법에 관한 것이다.The present invention relates to a control method of the refrigerator, and more particularly, to a control method of the refrigerator for controlling the speed of the condensation fan and the evaporation fan according to the size of the load on the refrigerator during initial startup in the overload region.
도 1은 일반적인 냉장고의 구성 요소가 개략적으로 도시된 도면으로서, 이를참조하면 상기한 냉장고는 냉매를 압축시켜 고온고압의 증기상태로 변환시키는 압축기(1)와, 상기 압축기(1)를 통해 고온고압의 증기상태가 된 냉매를 주위의 공기와 열교환시켜 냉매를 고압의 액상태로 응축시킴과 동시에 공기의 온도를 상승시키는 응축기(2)와, 상기 응축기(2)를 통해 고압의 액상태가 된 냉매가 증발하기 쉬운 상태가 되도록 감압시키는 모세관(5)과, 상기 모세관(5)을 통해 저온저압의 저건도상태가 된 냉매를 주위의 공기와 열교환시켜 냉매를 저온저압의 증기상태로 변환시킴과 동시에 공기의 온도를 감소시키는 증발기(6)를 포함하여 구성된다.1 is a view schematically illustrating the components of a general refrigerator. Referring to this, the refrigerator includes a compressor (1) for compressing a refrigerant and converting the refrigerant into a high temperature and high pressure steam state, and the high temperature and high pressure through the compressor (1). Heat exchanger with the surrounding air to condense the refrigerant into a high-pressure liquid state, and at the same time increase the temperature of the air, and the high-pressure liquid state through the condenser (2) The capillary tube (5) for reducing the pressure so as to easily evaporate, and the capillary tube (5) converts the refrigerant, which has become a low-temperature, low-dry state, into a low-temperature, low-pressure state by converting the refrigerant into a low-temperature, low-pressure vapor state. And an evaporator 6 which reduces the temperature of the air.
여기서, 상기 압축기(1)와 응축기(2)는 냉장고의 기계실에 설치되고, 상기 응축기(2) 측에는 응축기(2)의 방열작용을 돕기 위한 응축팬(3) 및 이 응축팬(3)에 동력을 공급하는 모터가 설치되어 있다.Here, the compressor (1) and the condenser (2) is installed in the machine room of the refrigerator, the condenser (2) side power to the condenser fan (3) and the condenser fan (3) to help the heat dissipation action of the condenser (2) The motor supplying the
또한, 상기 증발기(6)는 냉장고의 냉동실 뒤쪽에 설치되어 냉동실과 냉장실에 냉기를 제공하고, 상기 증발기(6)에는 증발기(6)의 흡열작용을 돕기 위한 증발팬(7) 및 이 증발팬(7)에 동력을 공급하는 모터가 설치되어 있다.In addition, the evaporator 6 is installed at the rear of the freezer compartment of the refrigerator to provide cold air to the freezer compartment and the refrigerating compartment, and the evaporator 6 includes an evaporator fan 7 and an evaporation fan (7) for assisting endothermic action of the evaporator 6. A motor is installed to power 7).
또한, 상기 응축기(2)와 증발기(6)에는 각각 응축온도와 증발온도를 감지하기 위한 응축기용 온도센서(8)와 증발기용 온도센서(9)가 장착되고, 상기 응축기용 온도센서(8) 및 증발기용 온도센서(9)는 압축기(1), 응축팬(3), 증발팬(7)의 동작을 제어하는 콘트롤러(10)에 연결되어 있다.In addition, the condenser 2 and the evaporator 6 is equipped with a condenser temperature sensor 8 and an evaporator temperature sensor 9 for detecting the condensation temperature and the evaporation temperature, respectively, and the condenser temperature sensor 8 And a temperature sensor 9 for the evaporator is connected to a controller 10 for controlling the operation of the compressor 1, the condensation fan 3, and the evaporation fan 7.
상기와 같이 구성된 냉장고의 작동은 다음과 같다.The operation of the refrigerator configured as described above is as follows.
먼저, 압축기(1)에 의해 압축되어 고온고압의 증기상태로 변화된 냉매가 응축기(2)로 흡입되면 상기 응축기(2)는 열을 방출하여 냉매를 상온고압의 액상태로변화시킨다.First, when the refrigerant compressed by the compressor 1 and changed into a vapor state at high temperature and high pressure is sucked into the condenser 2, the condenser 2 releases heat to change the refrigerant into a liquid state at room temperature and high pressure.
이후, 상기 응축기(2)에 의해 응축된 냉매는 드라이어(4)를 거친 후 모세관(5)을 지나면서 그중 일부가 감압됨으로써 액체와 기체가 혼합된 2상 상태가 된다.Thereafter, the refrigerant condensed by the condenser 2 passes through the dryer 4 and passes through the capillary tube 5, whereby some of the refrigerant is reduced to a two-phase state in which liquid and gas are mixed.
이후, 상기 증발기(6)로 흡입된 냉매는 완전히 기화되면서 주위의 열을 빼앗아 주변을 냉각시키게 되고, 이렇게 상기 증발기(6)에 의해서 냉각된 공기가 냉동실과 냉장실로 제공된다.Then, the refrigerant sucked into the evaporator 6 is completely vaporized to take the heat of the surroundings to cool the surroundings, and the air cooled by the evaporator 6 is provided to the freezer compartment and the refrigerating compartment.
상기와 같이 구성 및 작동되는 냉장고는 지금까지 모든 부하 영역에서 상기 응축팬(3)과 증발팬(7)을 압축기(1)와 연동하여 동일한 방식으로 구동시켜 왔다.The refrigerator constructed and operated as described above has driven the condensation fan 3 and the evaporation fan 7 in the same manner in conjunction with the compressor 1 in all load regions.
즉, 외기온이 높거나 고내에 다량의 식품이 저장되면 냉장고에 걸리는 부하가 커지고 외기온이 낮거나 고내에 저장되는 식품량이 적으면 냉장고에 걸리는 부하가 작아지는데, 종래에는 냉장고에 걸리는 부하의 크기와는 상관없이 상기 압축기(1)가 동작되면 응축팬(3)과 증발팬(7)도 일정한 속도로 함께 구동시키고 상기 압축기(1)가 정지되면 응축팬(3)과 증발팬(7)도 함께 정지시키는 방식으로 상기 응축팬(3)과 증발팬(7)의 동작을 제어하였다.In other words, if the outside temperature is high or a large amount of food is stored in the refrigerator, the load on the refrigerator increases, and if the outside temperature is low or the amount of food stored in the refrigerator is small, the load on the refrigerator is small. Regardless, when the compressor 1 is operated, the condensation fan 3 and the evaporation fan 7 are also driven together at a constant speed. When the compressor 1 is stopped, the condensation fan 3 and the evaporation fan 7 are also stopped. In order to control the operation of the condensation fan (3) and the evaporation fan (7).
그런데, 상기 냉장고의 외기온 또는 고내온도가 높아 냉장고에 걸리는 부하가 커지면 냉동사이클의 응축온도 또는 증발온도가 상승되어 냉매유량이 증가되고 압축기(1)의 압축비가 커지게 되므로 상기 압축기(1)에 과부하가 걸려 운전중에 압축기(1)가 과부하로 인해 정지되는 일이 발생된다.However, when the load on the refrigerator increases due to the high outside temperature or the internal temperature of the refrigerator, the condensation temperature or the evaporation temperature of the refrigerator increases, so that the refrigerant flow rate increases and the compression ratio of the compressor 1 increases, thereby overloading the compressor 1. The compressor 1 is stopped due to overload during operation.
따라서, 상기와 같은 종래 기술에 따른 냉장고의 제어 방법은 냉장고에 걸리는 부하가 큰 경우에도 냉장고에 걸리는 부하가 작은 경우와 동일하게 냉장고를 제어하기 때문에 과부하로 인해 압축기(1)가 정지되는 일이 빈번히 발생되어 상기 압축기(1) 내부의 부품이 손상되는 동시에 수명이 단축될 우려가 크고, 이에 따라 냉장고에 대한 신뢰성 및 소비자 만족도가 떨어지는 문제점이 있었다.Therefore, the control method of the refrigerator according to the related art as described above frequently controls the refrigerator in the same way as the case in which the load on the refrigerator is small even when the load on the refrigerator is large, so that the compressor 1 is frequently stopped due to overload. There is a high possibility that the parts inside the compressor (1) are damaged and shortened at the same time, thereby reducing the reliability and customer satisfaction with the refrigerator.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 외기온이 높거나 고내에 다량의 식품이 저장되어 있는 과부하 영역에서 초기 기동시 응축팬과 증발팬의 속도를 부하의 크기에 따라 조절함으로써 압축기에 걸리는 부하를 감소시켜 과부하시 발생할 수도 있는 압축기의 파손을 방지하고, 이에 따라 냉장고의 사용영역이 넓어지는 동시에 신뢰성이 높아지도록 하는 냉장고의 제어 방법을 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, the compressor by adjusting the speed of the condensation fan and the evaporation fan at the time of initial start in the overload area where the outside air temperature is high or a large amount of food is stored in the compressor according to the size of the load It is an object of the present invention to provide a control method of a refrigerator that reduces the load on the refrigerator to prevent damage to the compressor that may occur during overload, thereby increasing the use area of the refrigerator and increasing reliability.
도 1은 일반적인 냉장고의 구성 요소가 개략적으로 도시된 도면,1 is a view schematically showing the components of a typical refrigerator,
도 2는 본 발명에 따른 냉장고의 제어 방법이 도시된 도면이다.2 is a view showing a control method of a refrigerator according to the present invention.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>
1 : 압축기 2 : 응축기1: compressor 2: condenser
3 : 응축팬 6 : 증발기3: condensation fan 6: evaporator
7 : 증발팬 8 : 응축기용 온도센서7: evaporating fan 8: temperature sensor for condenser
9 : 증발기용 온도센서 10 : 콘트롤러9: Temperature sensor for evaporator 10: Controller
상기의 목적을 달성하기 위한 본 발명에 따른 냉장고의 제어 방법은, 냉장고가 운전되면 상기 냉장고에 걸리는 부하의 크기를 측정하여 과부하 상태인지를 판단하는 제 1과정과, 상기 제 1과정에서 냉장고가 과부하 상태이면 압축기에 걸리는 부하가 감소되도록 기계실에 설치된 응축팬의 속도를 상승시키는 동시에 냉동실에 설치된 증발팬의 속도를 하강시키는 제 2과정과, 상기 냉장고가 과부하 상태에서 해소되면 상기 응축팬과 증발팬의 속도를 과부하 이전의 원상태로 복귀시키는 제 3과정으로 이루어진 것을 특징으로 한다.The control method of the refrigerator according to the present invention for achieving the above object, the first step of determining whether the overload state by measuring the size of the load on the refrigerator when the refrigerator is operated, and the refrigerator is overloaded in the first step In the second step of increasing the speed of the condensation fan installed in the machine room to reduce the load on the compressor at the same time, and lowering the speed of the evaporation fan installed in the freezer compartment. And a third process of returning the speed to its original state before overload.
이하, 본 발명의 실시 예를 첨부한 도면에 의거하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 일반적인 냉장고의 구성 요소가 개략적으로 도시된 도면이고, 도 2는 본 발명에 따른 냉장고의 제어 방법이 도시된 도면이다.1 is a view schematically showing the components of a typical refrigerator, Figure 2 is a view showing a control method of a refrigerator according to the present invention.
상기한 도 1 및 도 2를 참조하여 본 발명에 의한 냉장고의 제어 방법에 대해 설명하면 다음과 같다.The control method of the refrigerator according to the present invention will be described with reference to FIGS. 1 and 2 as follows.
먼저, 냉장고가 운전되면 상기 냉장고에 걸리는 부하의 크기를 측정하여 과부하 상태인지를 판단한다.First, when the refrigerator is operated, it is determined whether the overload state by measuring the size of the load on the refrigerator.
이때, 상기 냉장고에 걸리는 부하의 크기는 응축기(2)에 설치된 응축기용 온도센서(8)를 통해 감지되는 응축온도를 기준으로 측정한다.In this case, the size of the load applied to the refrigerator is measured based on the condensation temperature detected by the condenser temperature sensor 8 installed in the condenser 2.
즉, 냉장고의 외기온도가 높아져 상기 냉장고에 걸리는 부하가 커지면 상기 응축기용 온도센서(8)에 의해 감지되는 응축온도가 상승하게 되므로 상기한 응축온도가 TC1 이상이면 냉장고가 과부하 상태인 것으로 판단한다.That is, when the outside temperature of the refrigerator is increased and the load on the refrigerator is increased, the condensation temperature detected by the condenser temperature sensor 8 is increased. Therefore, when the condensation temperature is TC1 or more, it is determined that the refrigerator is overloaded.
다른 실시 예에 따르면, 상기 냉장고에 걸리는 부하의 크기는 증발기(6)에 설치된 증발기용 온도센서(9)를 통해 감지되는 증발온도를 기준으로 측정한다.According to another embodiment, the magnitude of the load on the refrigerator is measured based on the evaporation temperature detected by the evaporator temperature sensor 9 installed in the evaporator 6.
즉, 냉장고에 다량의 식품이 저장되어 상기 냉장고에 걸리는 부하가 커지면 상기 증발기용 온도센서(9)에 의해 감지되는 증발온도가 상승하게 되므로 상기한 증발온도가 TE1 이상이면 냉장고가 과부하 상태인 것으로 판단한다.That is, when a large amount of food is stored in the refrigerator and the load on the refrigerator increases, the evaporation temperature detected by the temperature sensor 9 for the evaporator is increased. Therefore, when the evaporation temperature is TE1 or more, it is determined that the refrigerator is overloaded. do.
이때, 상기 냉장고의 과부하 상태 여부를 정확히 판단하기 위해서는 상기한 응축온도와 증발온도를 동시에 고려하여 판단하는 것이 가장 바람직하다.In this case, in order to accurately determine whether the refrigerator is overloaded, it is most preferable to consider the condensation temperature and the evaporation temperature at the same time.
또한 다른 실시 예에 따르면, 상기 냉장고에 걸리는 부하의 크기는 기계실에 설치된 기계실용 온도센서를 통해 감지되는 기계실온도를 기준으로 측정하거나, 냉동실 또는 냉장실과 같은 고내에 설치된 고내용 온도센서를 통해 감지되는 고내온도를 기준으로 측정할 수도 있다.Further, according to another embodiment, the size of the load applied to the refrigerator is measured based on the machine room temperature detected by the temperature sensor for the machine room installed in the machine room, or is detected by an internal temperature sensor installed in the refrigerator, such as a freezer or a refrigerator compartment. It can also be measured based on the internal temperature.
이후, 상기 응축기용 온도센서(8)를 통해 감지된 응축온도가 TC1 이상이거나 상기 증발기용 온도센서(9)를 통해 감지된 증발온도가 TE1 이상이 되어 냉장고가 과부하 상태로 판단되면 콘트롤러(10)에서 기계실에 설치된 응축팬(3)의 속도를 상승시키는 동시에 냉동실에 설치된 증발팬(7)의 속도를 하강시킨다.Subsequently, when the condenser temperature detected by the condenser temperature sensor 8 is equal to or greater than TC1 or the evaporator temperature detected by the evaporator temperature sensor 9 becomes equal to or greater than TE1, the refrigerator is determined to be overloaded. While increasing the speed of the condensation fan (3) installed in the machine room at the same time lowering the speed of the evaporation fan (7) installed in the freezing chamber.
상기와 같이 상기 응축팬(3)의 속도를 상승시키고 상기 증발팬(7)의 속도를 하강시키면 과부하시 냉동사이클을 통해 흐르는 냉매의 유량이 줄어들고 압축비가 감소되어 압축기(1)에 걸리는 부하가 감소되게 된다.Increasing the speed of the condensation fan (3) and lowering the speed of the evaporation fan (7) as described above reduces the flow rate of the refrigerant flowing through the refrigeration cycle during overload and the compression ratio is reduced to reduce the load on the compressor (1) Will be.
따라서, 외기온이 높거나 고내에 다량의 식품이 저장되어 있는 과부하 영역에서의 초기 기동시에도 상기 응축팬(3)과 증발팬(7)의 속도를 조절함으로써 압축기(1)에 걸리는 부하를 감소시켜 과부하시 발생할 수도 있는 압축기(1)의 파손을 방지할 수 있게 된다.Therefore, the load on the compressor 1 is reduced by adjusting the speeds of the condensation fan 3 and the evaporation fan 7 even at the initial start in an overload area where the outside air temperature is high or a large amount of food is stored in the refrigerator. It is possible to prevent damage to the compressor (1) that may occur during overload.
이후, 상기한 응축온도와 증발온도가 감소되어 응축온도가 TC2 이하가 되고 증발온도가 TE2 이하가 되면 상기 콘트롤러(10)에서 냉장고가 과부하 상태에서 해소된 것으로 판단하고 상기 응축팬(3)과 증발팬(7)의 속도를 과부하 이전의 원상태로 복귀시킨다.Subsequently, when the condensation temperature and the evaporation temperature are reduced and the condensation temperature becomes TC2 or less and the evaporation temperature becomes TE2 or less, the controller 10 determines that the refrigerator is removed from an overload state and evaporates with the condensation fan 3. The speed of the fan 7 is returned to the original state before overload.
이때, 상기 냉장고의 과부하 상태가 해소되는 것으로 판단되는 과부하 종료온도, TC2와 TE2는 냉장고가 과부하 상태인 것으로 판단되는 과부하시작온도, TC1과 TE1보다 더 낮은 값으로 설정된다.At this time, the overload end temperature, TC2 and TE2, which are determined to be eliminated by the overload state of the refrigerator, is set to a lower value than the overload start temperature, TC1 and TE1, which are determined to be an overload state of the refrigerator.
상기와 같이 구성되고 동작되는 본 발명에 따른 냉장고의 제어 방법은, 외기온이 높거나 고내에 다량의 식품이 저장되어 있는 과부하 영역에서 초기 기동시 응축팬과 증발팬의 속도가 부하의 크기에 따라 조절되므로 압축기에 걸리는 부하가 감소되어 과부하시 발생할 수도 있는 압축기의 파손이 방지되고, 이에 따라 냉장고의 사용영역이 넓어지는 동시에 신뢰성이 높아지는 이점이 있다.In the control method of the refrigerator according to the present invention configured and operated as described above, the speed of the condensation fan and the evaporation fan is adjusted according to the size of the load during initial start-up in an overload area in which a large amount of food is stored in the outside air or in the refrigerator. Therefore, the load on the compressor is reduced to prevent damage to the compressor, which may occur during overload, thereby increasing the use area of the refrigerator and increasing reliability.
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