KR20040025420A - Self testing system of refrigerator and controlling method thereof - Google Patents
Self testing system of refrigerator and controlling method thereof Download PDFInfo
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- KR20040025420A KR20040025420A KR1020020057383A KR20020057383A KR20040025420A KR 20040025420 A KR20040025420 A KR 20040025420A KR 1020020057383 A KR1020020057383 A KR 1020020057383A KR 20020057383 A KR20020057383 A KR 20020057383A KR 20040025420 A KR20040025420 A KR 20040025420A
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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
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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
- F25D29/008—Alarm 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
- 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
- F25D2400/36—Visual displays
- F25D2400/361—Interactive visual displays
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
본 발명은 냉장고의 자가진단시스템 및 그 제어방법에 관한 것으로서, 보다상세하게는, 냉각시스템의 정상동작여부를 확인할 수 있으며 특히, 제품의 최초구동 시에도 냉각시스템의 정상동작여부를 손쉽게 확인할 수 있는 냉장고의 자가진단시스템 및 그 제어방법에 관한 것이다.The present invention relates to a self-diagnosis system of a refrigerator and a control method thereof, and more particularly, to determine whether the cooling system is normally operated. In particular, the refrigerator can be easily checked whether the cooling system is normally operated even when the product is initially driven. A self-diagnosis system of a refrigerator and a control method thereof.
냉장고는 식품이 저장되는 저장실의 온도를 저온으로 유지하여, 식품을 장기간 저장할 수 있도록 한다.이러한 냉장고는 저장실의 온도를 저온으로 유지하기 위해, 압축기를 통해 냉매를 순환시켜, 순환되는 냉매에 의해 각각의 저장실에 냉기를 공급하는 냉각시스템을 가지고 있다.The refrigerator maintains the temperature of the storage compartment where the food is stored at a low temperature, so that the food can be stored for a long time. In order to keep the temperature of the storage compartment at a low temperature, the refrigerator circulates a refrigerant through a compressor, and the refrigerant is circulated by the circulating refrigerant. It has a cooling system that supplies cold air to the storage room.
냉각시스템은 기체상태의 냉매를 고온 고압으로 압축하는 압축기와, 압축기로부터 제공된 냉매를 방열과정을 통해 상온 고압으로 액화시키는 응축기와, 응축기로부터 유입된 냉매가 기화되는 증발기로 구성된다. 이에 따라, 압축기에서 고온 고압으로 압축된 냉매는 응축기로 유입되어 상온 고압으로 액화되어 증발기로 제공되며, 증발기에서 냉매가 기화되면서 주변의 잠열을 빼앗아 저장실을 냉각시킨다. 이렇게 증발기에서 기화된 냉매가 다시 응축기로 모아져서 압축기로 귀환되면서 1냉동 사이클이 완료된다. 이러한 냉각시스템은 압축기의 구동에 의해 운용될 수 있으므로 압축기에 이상이 있는 경우, 냉각기능을 수행할 수 없다.The cooling system includes a compressor for compressing a gaseous refrigerant at high temperature and high pressure, a condenser for liquefying the refrigerant provided from the compressor at room temperature and high pressure through a heat dissipation process, and an evaporator in which the refrigerant introduced from the condenser is vaporized. Accordingly, the refrigerant compressed to high temperature and high pressure in the compressor is introduced into the condenser, liquefied to room temperature and high pressure, and provided to the evaporator. The refrigerant is evaporated in the evaporator, and the latent heat is removed to cool the storage compartment. The refrigerant vaporized in the evaporator is collected again into the condenser and returned to the compressor, thereby completing one refrigeration cycle. Since such a cooling system can be operated by the operation of the compressor, the cooling function cannot be performed when there is an error in the compressor.
이에 따라, 압축기가 정상상태로 동작하고 있는지 여부를 확인하기 위한 다양한 방법이 제시된바 있다. 이러한 종래 기술들에 따르면, 압축기 구동 후 사용자가 설정한 저장실의 설정온도와 실재 저장실 온도를 비교하여, 저장실의 온도가 설정온도보다 높게 측정되는 경우, 압축기에 이상이 있는 것으로 판단하도록 하고 있다.Accordingly, various methods for checking whether the compressor is operating in a normal state have been proposed. According to the prior arts, after the compressor is driven, the set temperature of the storage compartment set by the user is compared with the actual storage compartment temperature. When the temperature of the storage compartment is measured to be higher than the set temperature, the compressor is determined to be abnormal.
그런데, 이러한 종래 기술에 따르면, 저장실온도를 사용자 설정온도와 비교하여야 하므로, 사용자가 설정온도를 지정하기 이전 상태인, 냉장고의 최초운전 시에는 압축기의 상태를 판단할 수 없다는 문제점이 있다.However, according to the related art, since the storage room temperature is to be compared with the user set temperature, there is a problem in that the state of the compressor cannot be determined during the initial operation of the refrigerator, which is a state before the user designates the set temperature.
또한, 압축기에 이상이 있는 경우일 지라도, 외기온도가 현저히 낮은 상태에서는 저장실 온도가 설정온도로 유지될 수도 있으므로, 압축기의 이상상태를 판단하는데 있어 정확도가 떨어지게 된다.In addition, even when there is an abnormality in the compressor, since the storage compartment temperature may be maintained at the set temperature in a state where the outside air temperature is significantly low, the accuracy in determining the abnormal state of the compressor is reduced.
특히, 침채류를 보관하는 김치냉장고의 경우, 저장실온도변화에 따라 김치가 쉽게 변질되므로, 압축기 사태를 정확히 확인할 수 있는 자가진단시스템이 요원하다.In particular, in the case of kimchi refrigerator storing the sesame vegetables, the kimchi is easily changed according to the change of the storage room temperature, the self-diagnosis system that can accurately check the state of the compressor is required.
따라서, 본 발명의 목적은, 냉각시스템의 정상동작여부를 확인할 수 있으며 특히, 제품의 최초구동 시에도 냉각시스템의 정상동작여부를 손쉽게 확인할 수 있는 냉장고의 자가진단시스템 및 그 제어방법을 제공하는 것이다.Accordingly, it is an object of the present invention to provide a self-diagnosis system for a refrigerator and a control method thereof, which can confirm whether a cooling system is normally operated and, in particular, can easily check whether a cooling system is normally operated even when the product is initially driven. .
도 1은, 본 발명에 따른 자가진단시스템이 적용된 김치냉장고의 단면도,1 is a cross-sectional view of the kimchi refrigerator to which the self-diagnosis system according to the present invention is applied,
도 2는, 본 발명에 따른 자가진단시스템의 제어블럭도,2 is a control block diagram of a self-diagnosis system according to the present invention;
도 3은, 본 발며에 다른 자가진단시스템의 제어흐름도이다.3 is a control flowchart of a self-diagnosis system according to the present invention.
* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
1 : 김치냉장고 3 : 내부케이싱1: kimchi refrigerator 3: inner casing
5 : 도어 7 : 저장실5: door 7: storage room
9 : 기계실10 : 냉각시스템9: machine room 10: cooling system
11 : 압축기12 : 응축기11: compressor 12: condenser
13 : 증발기20 : 온도감지부13 evaporator 20 temperature sensing unit
22 : 제어부24 : 감지부22: control unit 24: detection unit
26 : 디스플레이부26: display unit
상기 목적은 본 발명에 따라, 식품의 저장을 위한 저장실과, 상기 저장실의 냉각을 위한 냉각시스템을 갖는 냉장고의 자가진단시스템에 있어서, 경보부와; 상기 저장실의 온도를 측정하는 온도감지부와; 상기 온도감지부를 통해 감지된 상기 저장실의 제1온도와 상기 냉각시스템이 소정 기준시간 이상 동작한 이후의 상기 저장실의 온도인 제2온도를 비교하여, 상기 저장실이 냉각되지 아니한 것으로 판단된 경우, 상기 경보부를 통해 상기 냉각시스템의 이상상태를 경고하는 제어부를 포함하는 것을 특징으로 하는 냉장고의 자가진단시스템에 의해 달성된다.According to the present invention, there is provided a self-diagnosis system for a refrigerator having a storage compartment for storing food and a cooling system for cooling the storage compartment, comprising: an alarm unit; A temperature sensing unit measuring a temperature of the storage chamber; When it is determined that the storage compartment is not cooled by comparing the first temperature of the storage compartment sensed by the temperature sensing unit with a second temperature which is a temperature of the storage compartment after the cooling system operates for a predetermined reference time or more, It is achieved by the self-diagnosis system of the refrigerator comprising a control unit for warning the abnormal state of the cooling system through an alarm unit.
여기서, 상기 경보부는 디스플레이장치를 포함하고, 상기 제어부는 상기 디스플레이장치를 통해, 상기 냉각시스템의 이상상태를 경고하는 메시지를 표시하는 것이 바람직하다.The alarm unit may include a display device, and the control unit may display a message for warning an abnormal state of the cooling system through the display device.
또한, 상기 경보부는 오디오회로부를 포함하고, 상기 제어부는 상기 오디오회로부를 통해, 상기 냉각시스템의 이상상태를 경고하는 메시지를 송출하는 것도 가능하다.The alarm unit may include an audio circuit unit, and the control unit may transmit a message warning the abnormal state of the cooling system through the audio circuit unit.
그리고, 상기 냉각시스템은 냉매를 압축하는 압축기를 포함하며, 상기 제어부는 상기 온도감지부를 통해 감지된 상기 저장실의 제1온도와 상기 냉각시스템이 소정 기준시간 이상 동작한 이후의 상기 저장실의 온도인 제2온도를 비교하여, 상기 저장실이 냉각되지 아니한 것으로 판단된 경우, 상기 디스플레이부를 통해 상기 압축기의 이상상태를 경고하는 것으로 판단된 경우, 상기 디스플레이부를 통해 상기 압축기의 이상상태를 경고하는 것이 가능하다.The cooling system includes a compressor for compressing a refrigerant, wherein the control unit is a first temperature of the storage chamber detected through the temperature sensing unit and a temperature of the storage chamber after the cooling system operates for a predetermined reference time or more. Comparing the two temperatures, when it is determined that the storage chamber is not cooled, when it is determined that the abnormal state of the compressor through the display unit, it is possible to warn the abnormal state of the compressor through the display unit.
한편, 상기 목적은 본 발명의 다른 분야에 따르면, 식품의 저장을 위한 저장실과, 상기 저장실의 냉각을 위한 냉각시스템을 갖는 냉장고의 자가진단시스템의 제어방법에 있어서, 상기 저장실의 온도를 감지하는 단계와; 상기 냉각시스템이 소정 기준시간 이상 동작한 이후의 상기 저장실의 온도를 측정하는 단계와; 상기 냉각시스템의 동작 이후의 상기 저장실의 온도가 상기 초기온도를 비교하는 단계와; 상기 냉각시스템의 동작 이후의 상기 저장실의 온도가 상기 초기온도보다 낮지 아니한 경우, 상기 냉각시스템의 이상상태를 경고하는 단계를 포함하는 것을 특징으로 하는 냉장고의 자가진단시스템의 제어방법에 의해서도 달선된다.On the other hand, according to another field of the present invention, in the control method of the self-diagnosis system of the refrigerator having a storage compartment for storing food and a cooling system for cooling the storage compartment, the step of sensing the temperature of the storage compartment Wow; Measuring a temperature of the storage chamber after the cooling system is operated for a predetermined reference time or more; Comparing the initial temperature of the storage compartment after the operation of the cooling system with the initial temperature; When the temperature of the storage chamber after the operation of the cooling system is not lower than the initial temperature, the control method of the self-diagnosis system of the refrigerator comprising the step of warning the abnormal state of the cooling system.
이하에서는 첨부도면을 참조하여 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 자가진단시스템이 적용된 김치냉장고의 단면도이다. 도면에 도시된 바와 같이, 김치냉장고(1)는 외관을 형성하는 본체케이싱과, 본체케이싱 내에 발포재충전간격을 두고 수용되어 상호 격리된 저장실(7) 및 기계실(9)을 형성하는 내부케이싱(3)과, 냉각실의 도어개구를 밀폐하는 도어(5)를 가지고 있으며, 냉각실의 내부온도를 냉각시키기 위한 냉각시스템(10)을 가지고 있다.1 is a cross-sectional view of the kimchi refrigerator to which the self-diagnosis system according to the present invention is applied. As shown in the figure, the kimchi refrigerator 1 includes a main body casing which forms an outer appearance, and an inner casing 3 which is accommodated with a foam filling gap in the main body casing and forms a storage chamber 7 and a machine chamber 9 which are isolated from each other. ) And a door 5 for sealing the door opening of the cooling chamber, and has a cooling system 10 for cooling the internal temperature of the cooling chamber.
냉각시스템(10)은 기계실(9)내에 수용되는 압축기(11) 및 응축기(12)와, 내부케이싱(3)의 외표면을 둘러싸도록 설치되는 증발기(13)의 폐루프로 형성되어 있으며, 내부케이싱(3)의 일영역에는 냉각실의 온도를 감지하는 온도감지부(20)가 마련되어 있다.The cooling system 10 is formed of a closed loop of the compressor 11 and the condenser 12 accommodated in the machine room 9 and the evaporator 13 installed to surround the outer surface of the inner casing 3. One region of the casing 3 is provided with a temperature sensing unit 20 for sensing the temperature of the cooling chamber.
그리고, 본체케이싱의 일영역에는 사용자에게 압축기(11)의 정상동작여부를 표시하는 디스플레이부(26)(미도시)가 마련되어 있다.In one region of the main body casing, a display unit 26 (not shown) for displaying whether the compressor 11 is in normal operation is provided to the user.
도 2는, 본 발명에 따른 자가진단시스템의 제어블럭도이다. 도면에 도시된 바와 같이, 본 자가진단시스템은 저장실(7) 내 온도를 감지하는 온도감지부(24)와, 저장실(7)에 공급되는 냉기량을 조절하는 밸브의 온오프상태를 감지하는 밸브감지부(24)와, 냉매를 순환시키는 압축기(11)와 온도감지부(24)를 통한 감지결과에 따라, 압축기(11)의 정상동작여부를 판단하여 판단결과를 디스플레이부(26)에 표시하는 제어부(22)를 포함한다.2 is a control block diagram of a self-diagnosis system according to the present invention. As shown in the figure, the self-diagnosis system is a valve for sensing the on-off state of the temperature sensing unit 24 for sensing the temperature in the storage chamber 7 and the valve for adjusting the amount of cold air supplied to the storage chamber 7. According to the detection result by the detection unit 24, the compressor 11 and the temperature detection unit 24 for circulating the refrigerant, it is determined whether the compressor 11 is in normal operation and the determination result is displayed on the display unit 26. And a control unit 22.
압축기(11)에서 고온 고압으로 압축된 냉매는 응축기(12)로 유입되어 상온고압으로 액화되어 증발기(13)로 제공되며, 증발기(13)에서 냉매가 기화되면서 주변의 잠열을 빼앗아 저장실(7)을 냉각시킨다. 밸브는 증발기(13)로 유입되는 냉매의 양을 조절하여, 저장실(7) 온도를 조절한다. 따라서, 밸브가 오프된 상태일 경우, 압축기(11)가 구동되더라도, 증발기(13)로의 냉매유입이 차단되어 저장실(7)에는 냉기가 공급되지 아니한다.The refrigerant compressed by the high temperature and high pressure in the compressor 11 is introduced into the condenser 12 and liquefied at room temperature and high pressure to be provided to the evaporator 13. Cool down. The valve controls the amount of refrigerant flowing into the evaporator 13, thereby controlling the temperature of the reservoir 7. Therefore, when the valve is in the off state, even if the compressor 11 is driven, inflow of the refrigerant to the evaporator 13 is blocked, so that cool air is not supplied to the storage chamber 7.
밸브감지부(24)는 저장실(7)에 공급되는 냉기량을 조절하는 밸브의 온오프상태를 감지하여, 감지결과를 제어부(22)에 전달한다.The valve detecting unit 24 detects an on / off state of a valve for adjusting the amount of cold air supplied to the storage chamber 7, and transmits a detection result to the control unit 22.
제어부(22)는 소정의 압축기(11) 구동조건에서, 압축기(11)를 구동시켜 냉각기능이 수행되도록 한다. 제어부(22)는 압축기(11) 구동 시, 온도감지부(24)를 통해 저장실(7)의 온도를 확인하며, 압축기(11)의 구동 후, 소정 기준시간이 경과하면, 다신 저장실(7)의 온도를 감지하여, 이 전에 감지된 저장실(7)의 온도와 비교한다.The controller 22 drives the compressor 11 under a predetermined compressor 11 driving condition to perform a cooling function. The controller 22 checks the temperature of the storage chamber 7 through the temperature sensing unit 24 when the compressor 11 is driven, and when the predetermined reference time elapses after the compressor 11 is driven, the storage chamber 7 The temperature of the sensor is detected and compared with the temperature of the previously detected storage chamber 7.
기준시간 경과 후 감지된 저장실(7)의 온도와 이 전에 감지된 저장실(7)의 온도를 비교한 결과, 저장실(7)이 냉각되지 아니한 것으로 판단되면, 제어부(22)는 압축기(11)가 이상상태인 것으로 판단한다. 즉, 기준시간 경과 후 감지된 저장실(7)온도가 이전에 감지된 저장실(7)의 온도와 같거나 높은 경우, 제어부(22)는 압축기(11)가 구동되지 아니한 것으로 판단하여 냉각시스템(10)에 이상이 생긴 것으로 판단한다.After comparing the temperature of the storage compartment 7 detected after the reference time has elapsed with the temperature of the previously detected storage compartment 7, it is determined that the storage compartment 7 is not cooled. Judging from the abnormal state. That is, when the temperature of the storage compartment 7 sensed after the reference time elapses is equal to or higher than the temperature of the previously detected storage compartment 7, the controller 22 determines that the compressor 11 is not driven and thus the cooling system 10. It is judged that abnormality has occurred in).
냉각시스템(10)에 이상이 생긴 것으로 판단된 경우, 제어부(22)는 디스플레이부(26)를 통해 사용자에게 압축기(11) 이상상태를 경고한다. 이상상태를 경고하는 방법으로는 간단한 오디오 회로부를 구비하여, 경고메시지를 송출하는 것도 물론 가능하다.If it is determined that an abnormality has occurred in the cooling system 10, the control unit 22 warns the user of the compressor 11 abnormal state through the display unit 26. As a method of warning of an abnormal state, a simple audio circuit unit is provided, and it is of course possible to send out a warning message.
한편, 제어부(22)는 압축기(11) 구동조건에서, 압축기(11)를 구동시켜 제어하여 냉각기능이 수행하는 한편, 밸브감지부(24)를 통해 밸브가 개방된 상태인지 여부를 확인함으로써, 저장실(7)의 냉기공급조건을 확인 한 후, 온도감지부(24)를 통해 저장실(7)의 온도를 확인하도록 할 수도 있다. 이에 따라, 압축기(11)가 정상적으로 구동되고 있으나, 밸브의 폐쇄상태로 인해 증발기(13)로의 냉매유입이 차단되어 저장실(7)에는 냉기가 공급되지 아니한 경우, 압축기(11)의 이상상태로 인지할 수 있는 오류를 방지할 수 있다.On the other hand, the control unit 22 performs a cooling function by controlling the compressor 11 by driving the compressor 11 under the driving conditions, and checks whether or not the valve is opened through the valve detecting unit 24, After confirming the cold air supply condition of the storage chamber 7, the temperature of the storage chamber 7 may be checked through the temperature sensing unit 24. Accordingly, the compressor 11 is normally driven, but when the coolant is not supplied to the evaporator 13 due to the closed state of the valve, and no cool air is supplied to the storage chamber 7, the compressor 11 is recognized as an abnormal state. This can prevent possible errors.
이러한 구성을 갖는 자가진단시스템의 제어흐름도는 도 3에 도시된 바와 같다. 제어부(22)는 냉각시스템(10)의 구동조건인 것으로 판단된 경우(S10), 압축기(11)를 구동시켜 냉각시스템(10)의 운전을 시작한다(S12). 여기서, 냉각시스템(10)의 구동조건은 사용자가 냉장고의 냉각기능의 구동을 선택하는 경우나, 저장실(7) 온도가 소정 온도 이상으로 높은 것으로 판단되어 냉각시스템(10)의 구동이 필요한 경우 등을 들 수 있다.The control flow chart of the self-diagnosis system having such a configuration is as shown in FIG. If it is determined that the controller 22 is a driving condition of the cooling system 10 (S10), the control unit 22 drives the compressor 11 to start the operation of the cooling system 10 (S12). Here, the driving condition of the cooling system 10 is when the user selects the driving of the cooling function of the refrigerator, or when the storage compartment 7 temperature is determined to be higher than a predetermined temperature and the driving of the cooling system 10 is required. Can be mentioned.
제어부(22)는 온도감지부(24)를 통해 저장실(7)의 초기온도(T1)를 감지하여 저장한다(S12). 제어부(22)는 냉각시스템(10)의 구동 후 소정 기준시간이 경과하였는지 여부를 판단하며(S16), 소정 기준시간이 경과한 후의 저장실(7)의 온도(T2)를 감지한다(S18). 여기서, 기준시간은 시스템 설계 시 설정될 수 있으며 대략 30분정도를 기준으로 하는 것이 바람직하다.The controller 22 detects and stores the initial temperature T 1 of the storage chamber 7 through the temperature sensor 24 (S12). The controller 22 determines whether a predetermined reference time has elapsed after driving the cooling system 10 (S16), and senses a temperature T 2 of the storage chamber 7 after the predetermined reference time has elapsed (S18). . Here, the reference time may be set at the time of designing the system and is preferably based on about 30 minutes.
제어부(22)는 초기온도(T1) 및 기준시간 경과 후의 온도(T2)를 비교한다(S20). 판단결과, 기준 시간 경과 후 온도(T2)가 초기온도(T1) 보다 낮은 것으로 확인된 경우, 냉각시스템(10)이 정상동작하여 저장실(7)이 냉각되는 것으로 판단하여 냉각시스템(10)의 운전을 계속한다(S22).The controller 22 compares the initial temperature T 1 and the temperature T 2 after the reference time has elapsed (S20). As a result, when it is confirmed that the temperature T 2 is lower than the initial temperature T 1 after the reference time elapses, the cooling system 10 operates normally, and it is determined that the storage compartment 7 is cooled, and thus the cooling system 10 Continue driving (S22).
한편, 기준시간 경과 후 온도(T2)가 초기온도(T1)와 같거나 혹은 높은 것으로 확인된 경우, 제어부(22)는 냉각시스템(10)의 구동에 이상이 있어 저장실(7)의 냉각기능이 수행되지 못하고 있는 것으로 판단하여 디스플레이부(26)를 통해 사용자에게 냉각시스템(10)의 이상을 경고한다(S24).On the other hand, when it is confirmed that the temperature T 2 is equal to or higher than the initial temperature T 1 after the reference time has elapsed, the controller 22 has an abnormality in driving the cooling system 10, and thus cooling the storage chamber 7. It is determined that the function is not performed to warn the user of the abnormality of the cooling system 10 through the display unit 26 (S24).
이상 설명에서는, 압축기(11)의 구동시작과 함께, 저장실(7) 내 온도를 감지하여 비교하는 것을 예시하고 있지만, 초기에 측정되는 온도는 압축기(11)의 구동에 의해 저장실(7)이 냉각되었는지 여부를 판단하기 위한 기준이 되는 온도로서, 압축기(11)의 구동 직전에 측정되거나 구동직후에 측정하는 것이 가능하다. 또한, 냉각시스템(10)이 정상동작 하는 경우 저장실(7) 온도는 지속적으로 낮아지므로, 압축기(11)의 구동 중일 지라도 저장실(7) 온도를 측정 하고, 소정 시간 경과 후 저장실(7) 온도와 비교함으로써, 냉각시스템(10)의 이상여부를 판단하는 것도 가능하다.In the above description, the temperature of the storage chamber 7 is sensed and compared with the start of the operation of the compressor 11, but the temperature measured initially is cooled by the storage chamber 7 by driving the compressor 11. It is possible to measure immediately before the drive of the compressor 11 or immediately after the drive, as a temperature as a reference for determining whether or not. In addition, since the temperature of the storage compartment 7 continuously decreases when the cooling system 10 operates normally, the temperature of the storage compartment 7 is measured even when the compressor 11 is being driven. By comparison, it is possible to determine whether the cooling system 10 is abnormal.
이상 설명한 바와 같이, 본 발명에 따른 냉장고의 자가진단시스템은 압축기의 구동 시, 초기 저장실 온도와 냉각시스템의 동작되는 상태에서 소정시간이 경과된 후 저장실온도를 측정하여 저장실의 냉각여부를 확인하고, 냉각시스템의 이상상태 시 사용자에게 경고토록 함으로써, 냉각시스템의 정상동작여부를 확인할 수 있으며 특히, 제품의 최초구동 시에도 냉각시스템의 정상동작여부를 손쉽게 확인할 수 있다.As described above, the self-diagnosis system of the refrigerator according to the present invention checks whether the storage compartment is cooled by measuring the storage compartment temperature after a predetermined time has elapsed in the operating state of the initial storage compartment temperature and the cooling system when the compressor is driven, By warning the user in case of abnormal cooling system, it is possible to check the normal operation of the cooling system. Especially, it is easy to check the normal operation of the cooling system even when the product is first started.
이상 설명한 바와 같이, 본 발명에 따르면, 냉각시스템의 정상동작여부를 확인할 수 있으며 특히, 제품의 최초구동 시에도 냉각시스템의 정상동작여부를 손쉽게 확인할 수 있는 냉장고의 자가진단시스템 및 그 제어방법이 제공된다.As described above, according to the present invention, it is possible to check whether the cooling system is in normal operation, and in particular, a self-diagnosis system of the refrigerator and a control method thereof for easily checking whether the cooling system is normally operated even when the product is initially driven are provided. do.
Claims (8)
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