KR100370091B1 - Methode for controlling working of refrigerator - Google Patents

Methode for controlling working of refrigerator Download PDF

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Publication number
KR100370091B1
KR100370091B1 KR10-2001-0017952A KR20010017952A KR100370091B1 KR 100370091 B1 KR100370091 B1 KR 100370091B1 KR 20010017952 A KR20010017952 A KR 20010017952A KR 100370091 B1 KR100370091 B1 KR 100370091B1
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KR
South Korea
Prior art keywords
refrigerator
evaporator
compartment evaporator
compartment
cycle operation
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Application number
KR10-2001-0017952A
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Korean (ko)
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KR20020078091A (en
Inventor
김세영
김양규
박진구
황인영
박준형
Original Assignee
엘지전자 주식회사
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Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR10-2001-0017952A priority Critical patent/KR100370091B1/en
Priority to US10/114,109 priority patent/US6883339B2/en
Priority to CNB021054541A priority patent/CN1167925C/en
Priority to JP2002102535A priority patent/JP2002357384A/en
Priority to CNB2004100590556A priority patent/CN1322295C/en
Priority to CNB2004100590541A priority patent/CN1308641C/en
Publication of KR20020078091A publication Critical patent/KR20020078091A/en
Application granted granted Critical
Publication of KR100370091B1 publication Critical patent/KR100370091B1/en

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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
    • 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
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • 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
    • F25B2600/11—Fan speed control
    • 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
    • F25D2400/34—Temperature balancing 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/02—Timing
    • 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

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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

본 발명은 냉장고의 운전 제어방법을 개선하여, RF 사이클 운전 종료시 냉장실용 증발기에 남아있던 냉력을 이용하여 소비전력을 저감시키는데 그 목적이 있다.An object of the present invention is to improve the operation control method of the refrigerator and to reduce power consumption by using the cooling power remaining in the refrigerator compartment evaporator at the end of the RF cycle operation.

이를 위해, 본 발명은 냉장실과 냉동실에 각각 구비된 냉장실용 증발기와 냉동실용 증발기를 순차적으로 운전시키는 RF 사이클 운전단계와, 냉동실에 구비된 냉동실용 증발기만을 운전시키는 F 사이클 운전단계를 갖는 냉장고의 운전제어방법에 있어서, 상기 RF 사이클 운전단계 종료시, 냉장실용 증발기에 남아있는 냉력을 이용하여 냉장실의 설정온도가 유지되도록 하기 위해, 냉장실용 증발기측에 구비된 냉장실용 증발기팬의 구동을 소정시간 연장시키는 단계가 포함되어 이루어짐을 특징으로 하는 냉장고의 운전제어방법을 제공한다.To this end, the present invention is an operation of a refrigerator having an RF cycle operation step of sequentially operating the refrigerator compartment evaporator and the freezer compartment evaporator respectively provided in the refrigerating compartment and the freezer compartment, and the F cycle operation step of operating only the freezer compartment evaporator provided in the freezer compartment. In the control method, at the end of the RF cycle operation step, in order to maintain the set temperature of the refrigerating compartment by using the cooling force remaining in the refrigerating compartment evaporator, the operation of the refrigerating compartment evaporator fan provided on the refrigerating compartment evaporator side is extended for a predetermined time. It provides a operation control method of the refrigerator characterized in that it comprises a step.

Description

냉장고의 운전제어방법{Methode for controlling working of refrigerator}Method for controlling working of refrigerator

본 발명은 냉장고에 관한 것으로서, 더 상세하게는 두 개의 증발기를 갖는냉장고의 운전제어방법에 관한 것이다.The present invention relates to a refrigerator, and more particularly to a method for controlling operation of a refrigerator having two evaporators.

일반적으로, 냉장고는 식품을 신선하게 장기간 보관하는 용도로 사용되는 기기이며, 오늘날에 이르러서는, 식품 중 한국의 특미식품이라 할 수 있는 김치를 효과적으로 보관하기 위한 냉장고 개발이 지속적으로 이루어지고 있는 추세에 있다.In general, the refrigerator is a device that is used for long-term storage of fresh food, and until now, the development of a refrigerator for effectively storing kimchi, which is a specialty food of Korea, has been continuously developed. have.

냉장고는, 도시되지 않았지만, 본체와, 식품을 냉동보관하기 위한 냉동실과, 식품을 냉장보관하기 위한 냉장실과, 그리고 상기 냉동실 및 냉장실을 냉각시키기 위한 냉동사이클로 크게 나눌 수 있다.Although not shown, the refrigerator may be broadly divided into a main body, a freezing compartment for freezing and storing food, a refrigerating compartment for storing food and a freezing cycle for cooling the freezing compartment and the refrigerating compartment.

여기서, 냉동사이클은, 도 1에 도시된 바와 같이, 냉매를 압축하는 압축기(1)와, 압축된 냉매를 등압응축시키는 응축기(2)와, 응축된 냉매를 단열팽창시키는 모세관(3)과, 냉장실과 냉동실에 각각 구비되어 팽창된 냉매를 등압증발시키는 냉장실용 증발기(4)와 냉동실용 증발기(5)로 이루어진다.Here, the refrigeration cycle, as shown in Figure 1, a compressor (1) for compressing the refrigerant, a condenser (2) isocondensing the compressed refrigerant, a capillary tube (3) for adiabatic expansion of the condensed refrigerant, The refrigerator compartment evaporator 4 and the freezer compartment evaporator 5 are respectively provided in the refrigerating compartment and the freezing compartment for isothermally evaporating the expanded refrigerant.

이와 더불어, 냉동사이클은, 상기 응축기(2)에서 응축된 냉매가 분지(分枝)된 유로(流路)를 따라 상기 냉장실용 증발기(4)나 냉동실용 증발기(5)로 선택적으로 유입되도록 상기 유로의 분지점에 구비되는 삼방밸브(6)와, 응축기(2)측에 구비되어 응축기 또는 압축기(1)를 냉각시키는 응축기팬(2a)과, 냉장실용 증발기(4)측에 구비되어 냉장실용 증발기에서 열교환되는 공기를 강제대류시켜 열교환을 촉진시키는 냉장실용 증발기팬(4a)과, 냉동실용 증발기(5)측에 구비되어 냉동실용 증발기에서 열교환되는 공기를 강제대류시켜 열교환을 촉진시키는 냉동실용 증발기팬(5a)이 더 포함되어 이루어진다.In addition, the refrigeration cycle is such that the refrigerant condensed in the condenser 2 selectively flows into the refrigerating chamber evaporator 4 or the freezing chamber evaporator 5 along a branched flow path. The three-way valve 6 provided at the branch point of the flow path, the condenser fan 2a provided on the condenser 2 side and cooling the condenser or compressor 1, and the refrigerating chamber evaporator 4 side, A refrigerator compartment evaporator fan 4a for forced convection of the heat exchanged air in the evaporator to promote heat exchange, and a freezer compartment evaporator provided on the side of the freezer compartment evaporator 5 to forcibly convection the heat exchanged in the freezer compartment evaporator to promote heat exchange. The fan 5a is further included.

이하, 상기와 같이 이루어진 냉동사이클을 갖는 냉장고의 동작을 설명하면다음과 같다.Hereinafter, the operation of the refrigerator having a refrigeration cycle made as described above is as follows.

첫째, 냉장실용 증발기(4)와 냉동실용 증발기(5)가 모두 가동되는 RF 사이클 운전시, 냉매가 냉장실용 증발기로 흐르도록 삼방밸브(6)가 열리고, 압축기(1)에서 압축된 기상냉매는 응축기(2)를 지나면서 고외(庫外)공기와 열교환을 하여 액상(液狀)냉매로 상전환되고, 모세관(3)을 지나면서 압력이 하강되며, 냉장실용 증발기(4)와 냉동실용 증발기(5)를 순차적으로 지나면서 냉장실/냉동실내의 공기와 각각 열교환을 하여 기상(氣狀)냉매로 상전환된 후 압축기로 유입되게 된다.First, in the RF cycle operation in which both the refrigerator compartment evaporator 4 and the freezer compartment evaporator 5 are operated, the three-way valve 6 is opened so that the refrigerant flows into the refrigerator compartment evaporator, and the gaseous refrigerant compressed by the compressor 1 is As it passes through the condenser (2) and exchanges heat with the outside air, it is phase-converted to the liquid refrigerant, and the pressure is reduced by passing through the capillary tube (3), and the evaporator for the refrigerator compartment (4) and the freezer compartment evaporator. After passing through (5) sequentially, the heat exchanged with the air in the refrigerating chamber / freezing chamber, respectively, is converted into gaseous refrigerant and then introduced into the compressor.

둘째, 냉동실용 증발기(5)만 가동되는 F 사이클 운전시, 냉매가 냉동실용 증발기로만 흐르도록 삼방밸브(6)가 열리고, 압축기(1)에서 압축된 기상냉매는 응축기(2)를 지나면서 고외공기와 열교환을 하여 액상냉매로 상전환되고, 모세관(3)을 지나면서 압력이 하강되며, 냉동실용 증발기(5)를 지나면서 냉동실 공기와 열교환을 하여 기상냉매로 상전환된 후 압축기로 유입되게 된다.Second, during the F cycle operation in which only the freezer compartment evaporator 5 is operated, the three-way valve 6 is opened so that the refrigerant flows only to the freezer compartment evaporator, and the gaseous phase refrigerant compressed by the compressor 1 passes through the condenser 2 and Heat exchange with the air to phase change into a liquid refrigerant, the pressure is lowered through the capillary tube (3), passing through the freezer compartment evaporator (5), the heat exchange with the freezer compartment air is phase-converted to the gas phase refrigerant to enter the compressor do.

한편, 상기한 내용을 바탕으로, 종래기술에 따른 냉장고의 운전 제어방법을 설명하면 다음과 같다.On the other hand, based on the above, it will be described the operation control method of the refrigerator according to the prior art as follows.

냉장고(기기) 기동이 정지된 후 재 기동시, RF 사이클 운전을 시작하는 단계와, 이와 동시에 냉장고 기동에 필요한 전력을 인가시키는 단계와, 이와 동시에 압축기(1)를 가동시키는 단계와, 이와 동시에 냉동실용 증발기팬(5a)과 냉장실용 증발기팬(4a)을 구동시키는 단계가 포함되어 이루어진다.Starting the RF cycle after restarting the refrigerator (device) after it is stopped, simultaneously applying power for starting the refrigerator, and simultaneously operating the compressor (1), and simultaneously freezing And driving the practical evaporator fan 5a and the refrigerator compartment evaporator fan 4a.

그리고, RF 사이클이 설정시간동안 운전된 후, 냉장실 온도가 설정온도 이하이고 냉동실 온도가 설정온도 이상이 계속되면, F 사이클 운전을 시작하는 단계와,이와 동시에, 냉장실용 증발기팬(4a)의 구동을 정지시키는 단계와, 압축기(1)와 냉동실용 증발기팬(5a)을 계속해서 가동시키는 단계가 포함되어 이루어진다.After the RF cycle has been operated for a predetermined time, if the refrigerator compartment temperature is lower than the preset temperature and the freezer compartment temperature continues above the preset temperature, starting the F cycle operation, and at the same time, driving the refrigerator compartment evaporator fan 4a. And stopping the compressor 1 and continuously operating the compressor 1 and the freezer compartment evaporator fan 5a.

하지만, 상기와 같이 이루어진 종래기술에 따른 냉장고의 운전 제어방법은 다음과 같은 문제점을 가지고 있다.However, the operation control method of the refrigerator according to the prior art made as described above has the following problems.

도 2에 도시된 바와 같이, RF 사이클 운전에서 F 사이클 운전으로 전환되거나 냉장고(기기) 기동이 정지(a)되어 RF 사이클 운전이 종료되었을 때, 냉장실용 증발기(4)내로 냉매유동이 차단되고, 냉장실용 증발기팬(4a)의 구동이 정지됨과 동시에, 도 3에 도시된 바와 같이, 냉장실용 증발기(4)에 잔류하는 냉매가 온도평형을 이루면서 상승하게 된다. 여기서, 도 3을 다시 참조하면, 냉장실용 증발기의 냉매온도는 RF 사이클 운전 종료 시점(a)부터 상승하게 되지만, 소정시간(A)까지는 냉장실 설정온도(RT) 이하의 범위에서 상승하게 되므로, 이때 냉장실용 증발기팬(4a)의 구동을 정지시킨다는 것은 냉장실용 증발기(4)에 잔류하는 냉력을 그대로 버리는 결과가 되어, 에너지가 낭비되는 문제가 있었다.As shown in FIG. 2, when the RF cycle operation is switched from the RF cycle operation to the F cycle operation or when the refrigerator (device) startup is stopped (a) and the RF cycle operation is completed, the refrigerant flow is blocked into the refrigerator compartment evaporator 4. At the same time as driving of the refrigerating chamber evaporator fan 4a is stopped, as shown in FIG. 3, the refrigerant remaining in the refrigerating chamber evaporator 4 rises while achieving a temperature balance. Here, referring again to FIG. 3, the refrigerant temperature of the evaporator for the refrigerator compartment rises from the end of the RF cycle operation point (a), but rises in the range below the refrigerator compartment set temperature (RT) until the predetermined time (A). Shutting down the operation of the refrigerator compartment evaporator fan 4a results in the discard of the cooling force remaining in the refrigerator compartment evaporator 4 as it is, and there is a problem that energy is wasted.

또한, 도 3에 도시된 바와 같이, 냉장실용 증발기(4)의 냉매 온도가 냉장실 설정온도(RT) 이하의 범위(A)에서 상승되는 경우, 이 범위에서의 냉동실용 증발기(4)의 냉매는 액상(液狀)으로 존재하게 되고, 결국, RF 사이클 운전이 재 시작될 때, 비압축성의 액상냉매가 압축기(1)로 유입될 가능성이 커지게 되어, 압축기가 파손되거나 압축효율이 저하될 수도 있다.3, when the refrigerant temperature of the refrigerator compartment evaporator 4 rises in the range A below the refrigerator compartment set temperature RT, the refrigerant of the refrigerator compartment evaporator 4 in this range is The liquid phase is present in the liquid phase, and as a result, when the RF cycle operation is restarted, the likelihood of the incompressible liquid refrigerant flowing into the compressor 1 becomes large, and the compressor may be damaged or the compression efficiency may be lowered.

본 발명은 종래기술에 대한 문제점을 해결하기 위한 것으로서, 냉장고의 운전 제어방법을 개선하여, RF 사이클 운전 종료시 냉장실용 증발기에 남아있던 냉력을 이용하여 소비전력을 저감시키는데 그 목적이 있다.The present invention is to solve the problems of the prior art, and to improve the operation control method of the refrigerator, the purpose of reducing the power consumption by using the cooling power remaining in the refrigerator evaporator at the end of the RF cycle operation.

도 1은 일반적인 냉동사이클의 구성을 나타낸 블록도.1 is a block diagram showing the configuration of a typical refrigeration cycle.

도 2는 종래기술에 따른 냉장고의 운전제어방법에 의한 것으로서, RF 사이클 또는 F 사이클 운전시 압축기와 냉동실용 증발기팬 그리고 냉장실용 증발기팬의 온/오프 상태를 시간에 따라 나타낸 상태도.2 is a state control method of a refrigerator according to the prior art, a state diagram showing the on / off state of the compressor and the freezer evaporator fan and the refrigerator evaporator fan during the RF cycle or F cycle operation with time.

도 3은 종래기술에 따른 냉장고의 운전제어방법에 의해 나타나는 냉매의 온도 변화를 시간에 따라 나타낸 그래프.Figure 3 is a graph showing the temperature change of the refrigerant exhibited by the operation control method of the refrigerator according to the prior art with time.

도 4는 본 발명에 따른 냉장고의 운전제어방법에 의한 것으로서, RF 사이클 또는 F 사이클 운전시 압축기와 냉동실용 증발기팬 그리고 냉장실용 증발기팬의 온/오프 상태를 시간에 따라 나타낸 상태도.4 is a state control method of the refrigerator according to the present invention, and a state diagram showing the on / off state of the compressor and the freezer compartment evaporator fan and the refrigerator compartment evaporator fan during the RF cycle or F cycle operation with time.

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

1: 압축기 4: 냉장실용 증발기1: Compressor 4: Refrigerator evaporator

4a: 냉장실용 증발기팬 5: 냉동실용 증발기4a: Refrigerator evaporator fan 5: Freezer compartment evaporator

상기 목적을 달성하기 위해서, 본 발명은 냉장실과 냉동실에 각각 구비된 냉장실용 증발기와 냉동실용 증발기를 순차적으로 운전시키는 RF 사이클 운전단계와, 냉동실에 구비된 냉동실용 증발기만을 운전시키는 F 사이클 운전단계를 갖는 냉장고의 운전제어방법에 있어서, 상기 RF 사이클 운전단계 종료시, 냉장실용 증발기에 남아있는 냉력을 이용하여 냉장실의 설정온도가 유지되도록 하기 위해, 냉장실용 증발기측에 구비된 냉장실용 증발기팬의 구동을 소정시간 연장시키는 단계가 포함되어 이루어짐을 특징으로 하는 냉장고의 운전제어방법을 제공한다.In order to achieve the above object, the present invention provides an RF cycle operation step of sequentially operating a refrigerator compartment evaporator and a freezer compartment evaporator respectively provided in the refrigerating compartment and the freezer compartment, and an F cycle operation step of driving only the freezer compartment evaporator provided in the freezer compartment. In the operation control method of the refrigerator having, the operation of the refrigerator compartment evaporator fan provided on the refrigerator compartment evaporator side in order to maintain the set temperature of the refrigerator compartment by using the cooling force remaining in the refrigerator compartment evaporator at the end of the RF cycle operation step. It provides an operation control method of the refrigerator, characterized in that it comprises a step of extending a predetermined time.

이하, 첨부도면을 참조하여, 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 4는 본 발명에 따른 냉장고의 운전제어방법에 의한 것으로서, RF 사이클 또는 F 사이클 운전시 압축기와 냉동실용 증발기팬 그리고 냉장실용 증발기팬의 온/오프 상태를 시간에 따라 나타낸 상태도이다.4 is a state control method of a refrigerator according to the present invention, which is a state diagram showing an on / off state of a compressor, an evaporator fan for a freezer compartment, and an evaporator fan for a refrigerating compartment with time during an RF cycle or an F cycle operation.

도면 설명에 앞서, 두 개의 증발기를 갖는 냉장고의 구성은 종래기술에 언급된 바 있으므로, 그 설명을 생략하고, 종래기술과 동일한 구조에 한해서는 종래와 동일한 부호를 부여키로 한다.Prior to the description of the drawings, since the configuration of the refrigerator having two evaporators has been mentioned in the prior art, the description thereof is omitted, and only the same structure as the prior art is given the same reference numeral as in the prior art.

본 발명에 따른 냉장고의 운전제어방법은, 도 4에 도시된 바와 같이, 냉장실과 냉동실에 각각 구비된 냉장실용 증발기(4)와 냉동실용 증발기(5)를 순차적으로운전시키는 RF 사이클 운전단계와, 냉동실에 구비된 냉동실용 증발기(5)만을 운전시키는 F 사이클 운전단계를 갖는 냉장고의 운전제어방법에 있어서, 상기 RF 사이클 운전단계 종료시, 냉장실용 증발기(4)에 남아있는 냉력을 이용하여 냉장실의 설정온도가 유지되도록 하기 위해, 냉장실용 증발기측에 구비된 냉장실용 증발기팬(4a)의 구동을 소정시간 연장시키는 단계가 포함되어 이루어진다.The operation control method of the refrigerator according to the present invention, as shown in Figure 4, RF cycle operation step of sequentially operating the refrigerator compartment evaporator (4) and the freezer compartment evaporator (5) respectively provided in the refrigerator compartment and the freezer compartment, In the operation control method of the refrigerator having an F cycle operation step of operating only the freezer compartment evaporator (5) provided in the freezer compartment, at the end of the RF cycle operation step, the setting of the refrigerating compartment using the cooling power remaining in the refrigerating compartment evaporator (4) In order to maintain the temperature, the step of extending the driving of the refrigerator compartment evaporator fan 4a provided on the refrigerator compartment evaporator side for a predetermined time is included.

이 때, 상기 단계에서 언급된 소정시간은, 도 3에 도시된 바와 같이, 상기 RF 사이클 운전 단계가 종료되는 시점(a)부터 상기 냉장실용 증발기(4)내의 냉매온도가 냉장실 설정온도(RT)보다 높아지는 시점(b)까지의 시간(A)임이 바람직하다.At this time, the predetermined time mentioned in the step, as shown in Figure 3, the refrigerant temperature in the refrigerator compartment evaporator (4) from the point (a) of the end of the RF cycle operation step is the refrigerator compartment set temperature (RT) It is preferable that it is time A to the time point b which becomes higher.

이하, 도 3 및 도 4를 참조하여, 본 발명에 따른 냉장고의 운전제어방법을 더 상세하게 설명하면 다음과 같다.3 and 4, the operation control method of the refrigerator according to the present invention will be described in more detail as follows.

도 3에 도시된 바와 같이, RF 사이클 운전 종료시(a), 냉장실용 증발기팬(4a)의 구동이 정지되면, 냉장실용 증발기에 잔류하는 냉매가 온도평형을 이루면서 상승하게 된다. 여기서, 냉장실용 증발기의 냉매온도는 RF 사이클 운전 종료 시점부터 상승하게 되지만, 소정시간(A)까지는 냉장실 설정온도(RT) 이하의 범위에서 상승하게 되므로, 이때 냉장실용 증발기팬(4a)의 구동을 정지시키게 되면 냉장실용 증발기(4)에 잔류하는 냉력을 그대로 버리는 결과가 되어 에너지를 낭비하게 되는데, 본 발명에서는 이를 보다 효과적으로 해결하기 위해, RF 사이클 운전 종료시, 냉장실용 증발기팬(4a)의 구동을 소정시간(A) 연장되도록 하여 이러한 문제를 해결한 것이다.As shown in FIG. 3, when the operation of the RF cycle operation is terminated (a) and the driving of the refrigerator compartment evaporator fan 4a is stopped, the refrigerant remaining in the refrigerator compartment evaporator rises while achieving a temperature balance. Here, the coolant temperature of the refrigerating chamber evaporator is increased from the end of the RF cycle operation, but until the predetermined time (A) rises in the refrigerating chamber set temperature (RT) or less, the drive of the refrigerating chamber evaporator fan (4a) at this time. If it stops, the result is that the cold power remaining in the refrigerating chamber evaporator 4 is discarded as it is, and wastes energy. In order to solve this problem more effectively, at the end of the RF cycle operation, the driving of the refrigerating chamber evaporator fan 4a is stopped. This problem is solved by extending the predetermined time (A).

또한, RF 사이클 운전 종료시(a), 냉장실용 증발기(4)로 냉매의 유동이 차단되면 냉장실용 증발기의 냉매 온도가 상승하게 되고, 이때, 종래기술에서 이미 언급된 바 있듯이, 냉장실용 증발기(4)의 냉매 온도가 냉장실 설정온도(RT) 이하의 범위(A)에서 상승하는 경우, 이 범위에서의 냉장실용 증발기의 냉매는 액상(液狀)으로 존재하게 되고, 결국, RF 사이클 운전이 재 시작될 때, 비압축성의 액상냉매가 압축기(1)로 유입될 가능성이 커지게 되어, 압축기가 파손되거나 압축효율이 저하될 수도 있는데, 본 발명에서는 이를 보다 효과적으로 해결하기 위해, RF 사이클 운전이 재 시작될 때, 냉장실용 증발기팬(4a)의 구동을 소정시간(A) 연장되도록 하여 이러한 문제를 해결한 것이다.In addition, at the end of the RF cycle operation (a), when the flow of the refrigerant to the refrigerator compartment evaporator 4 is blocked, the refrigerant temperature of the refrigerator compartment evaporator is increased, and as mentioned in the related art, the refrigerator compartment evaporator 4 When the coolant temperature in the evaporator rises in the range (A) below the refrigerator set temperature (RT), the coolant in the refrigerating chamber evaporator in this range is in a liquid phase, and eventually, the RF cycle operation is restarted. When the incompressible liquid refrigerant is more likely to flow into the compressor 1, the compressor may be damaged or the compression efficiency may be lowered. In the present invention, in order to more effectively solve this problem, when the RF cycle operation is restarted, This problem is solved by extending the driving time of the refrigerator compartment evaporator fan 4a by a predetermined time (A).

결국, 본 발명은, RF 사이클 운전단계가 종료될 때, 정지시점(a)부터 냉장실 설정온도(RT)이상이 될 때(b)까지 냉장실용 증발기팬(4a)의 구동을 연장시킴에 따라, 냉장실 설정온도(RT)를 유지시키기 위한 냉력이 발생되어 소비전력을 저감시킬 수 있게 되고, 이와 더불어, 냉장실용 증발기(4)에 남아있던 액상냉매가 증발되어 기상냉매로 상전환됨에 따라, RF 사이클 재 운전시, 압축기(1)로 비압축성의 액상냉매 유입을 미연에 막을 수 있어 압축기의 신뢰성이 확보됨과 함께 압축효율을 향상시킬 수 있게 된다.As a result, the present invention extends the driving of the refrigerating compartment evaporator fan 4a from the stop point (a) to the refrigerating compartment set temperature (RT) at the end of the RF cycle operation step (b). As the cooling force for maintaining the refrigerating chamber set temperature (RT) is generated to reduce the power consumption, as well as the liquid refrigerant remaining in the refrigerating chamber evaporator (4) is evaporated to phase conversion into gas phase refrigerant, RF cycle In operation, the compressor 1 can prevent the inflow of incompressible liquid refrigerant in advance, thereby ensuring the reliability of the compressor and improving the compression efficiency.

이제까지 본 발명에 대하여 그 바람직한 실시예를 중심으로 살펴보았으며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자는 본 발명의 본질적 기술 범위 내에서 상기 본 발명의 상세한 설명과 다른 형태의 실시예들을 구현할 수 있을 것이다. 여기서 본 발명의 본질적 기술 범위는 특허청구범위에 나타나 있으며, 그와 동등한 범위 내에 있는 모든 차이점은 본 발명에 포함된 것으로 해석되어야할 것이다.So far, the present invention has been described with reference to the preferred embodiments, and those skilled in the art to which the present invention pertains to the detailed description of the present invention and other forms of embodiments within the essential technical scope of the present invention. Could be implemented. Here, the essential technical scope of the present invention is shown in the claims, and all differences within the equivalent range will be construed as being included in the present invention.

이상에서와 같이, 본 발명은 RF 사이클 운전단계가 종래될 때, 냉장실용 증발기팬의 구동이 소정시간 연장되도록 냉장고의 운전 제어방법을 개선한 것으로서, 다음과 같은 효과가 있다.As described above, the present invention improves the operation control method of the refrigerator so that the operation of the refrigerator compartment evaporator fan is extended for a predetermined time when the RF cycle operation step is conventional, and has the following effects.

첫째, 냉장실용 증발기팬의 구동이 소정시간 연장됨에 따라, 이 때 발생되는 냉력을 이용하여 냉장실 설정온도를 유지시킬 수 있어 소비전력이 저감되는 효과가 있다.First, as the operation of the evaporator fan for the refrigerating chamber is extended for a predetermined time, it is possible to maintain the refrigerating chamber set temperature using the cooling force generated at this time, thereby reducing power consumption.

둘째, 냉장실용 증발기에 남아있던 액상냉매가 증발되어 기상냉매로 상전환됨에 따라, RF 사이클 운전 재 시작시 압축기로 비압축성의 액상냉매 유입을 미연에 막을 수 있어 압축기의 신뢰성이 확보됨과 함께 압축효율이 향상되는 효과가 있다.Second, as the liquid refrigerant remaining in the evaporator for the refrigerating chamber is evaporated and phase-converted to gaseous refrigerant, it is possible to prevent incompressible liquid refrigerant inflow into the compressor at the start of the RF cycle operation, thereby ensuring the reliability of the compressor and the compression efficiency. There is an effect to be improved.

Claims (2)

냉장실과 냉동실에 각각 구비된 냉장실용 증발기와 냉동실용 증발기를 순차적으로 운전시키는 RF 사이클 운전단계와, 냉동실에 구비된 냉동실용 증발기만을 운전시키는 F 사이클 운전단계를 갖는 냉장고의 운전제어방법에 있어서,In the operation control method of the refrigerator having an RF cycle operation step of sequentially operating the refrigerator compartment evaporator and the freezer compartment evaporator respectively provided in the refrigerator compartment and the freezer compartment, and the F cycle operation step of operating only the freezer compartment evaporator provided in the freezer compartment, 상기 RF 사이클 운전단계 종료시, 냉장실용 증발기에 남아있는 냉력을 이용하여 냉장실의 설정온도가 유지되도록 하기 위해, 냉장실용 증발기측에 구비된 냉장실용 증발기팬의 구동을 소정시간 연장시키는 단계가 포함되어 이루어짐을 특징으로 하는 냉장고의 운전제어방법.At the end of the RF cycle operation step, in order to maintain the set temperature of the refrigerating compartment by using the cooling force remaining in the refrigerating compartment evaporator, the step of extending the operation of the refrigerating compartment evaporator fan provided on the refrigerating compartment evaporator side for a predetermined time. Operation control method of the refrigerator characterized in that. 제 1 항에 있어서,The method of claim 1, 상기 소정시간은;The predetermined time period; 상기 RF 사이클 운전 단계가 종료되는 시점부터, 상기 냉장실용 증발기내의 냉매온도가 냉장실 설정온도보다 높아지는 시점까지의 시간임을 특징으로 하는 냉장고의 운전제어방법.And a time from when the RF cycle operation step ends to a time point when the refrigerant temperature in the refrigerator compartment evaporator becomes higher than a refrigerator compartment set temperature.
KR10-2001-0017952A 2001-04-04 2001-04-04 Methode for controlling working of refrigerator KR100370091B1 (en)

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Application Number Priority Date Filing Date Title
KR10-2001-0017952A KR100370091B1 (en) 2001-04-04 2001-04-04 Methode for controlling working of refrigerator
US10/114,109 US6883339B2 (en) 2001-04-04 2002-04-03 Method for controlling power saving operation of refrigerator with two evaporator
CNB021054541A CN1167925C (en) 2001-04-04 2002-04-04 Energy saving operation control method of refrigerator having two evaporators
JP2002102535A JP2002357384A (en) 2001-04-04 2002-04-04 Controlling method of power-saving operation of refrigerator having two evaporators
CNB2004100590556A CN1322295C (en) 2001-04-04 2002-04-04 Controlling method of power-saving operation of refrigerator having two evaporators
CNB2004100590541A CN1308641C (en) 2001-04-04 2002-04-04 Controlling method of power-saving operation of refrigerator having two evaporators

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