KR960015385B1 - Control method for low cooling prevention of cold rooms to refrigerators - Google Patents

Control method for low cooling prevention of cold rooms to refrigerators Download PDF

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KR960015385B1
KR960015385B1 KR1019930014888A KR930014888A KR960015385B1 KR 960015385 B1 KR960015385 B1 KR 960015385B1 KR 1019930014888 A KR1019930014888 A KR 1019930014888A KR 930014888 A KR930014888 A KR 930014888A KR 960015385 B1 KR960015385 B1 KR 960015385B1
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temperature
compressor
compartment
cooling
refrigerator
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KR1019930014888A
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Korean (ko)
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KR950003772A (en
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윤영로
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대우전자 주식회사
배순훈
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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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  • 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

The control method of weak cooling prevention of fresh food compartment (hereafter called R) of the refrigerator equipped with a freezer (hereafter called F) temperature sensor(TH1) and R temperature sensor(TH2) consist of : a) sensing the R temperature on whether the temperature is high or not; b) checking whether the predetermined time have passed or not after the compressor stopped; c) turning on the compressor and fan motor if b) is affirmative; d) checking the F temperature reaching the cut-off temperature of the compressor or not; e) turning off the compressor if d) is affirmative; f) checking whether the R temperature is low enough; g) turning off the compressor and fan motor if f) is affirmative, h) turning on the fan motor only if b) is negative; and processed to b) if f) is negative.

Description

냉장고의 냉장실 약냉방지 제어방법How to control weak cooling of refrigerator

제 1 도는 일반적인 냉장고의 제어회로도.1 is a control circuit diagram of a general refrigerator.

제 2 도는 본 발명에 의한 냉동실 및 냉장실의 온도곡선.2 is a temperature curve of the freezer compartment and the refrigerating compartment according to the present invention.

제 3 도는 본 발명의 제어흐름도.3 is a control flowchart of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

TH : 냉동실 온도감지소자 TH2: 냉장실 온도감지소자TH: Freezer compartment temperature sensor TH 2 : Refrigerator compartment temperature sensor

CP : 압축기 FF : 팬모터CP: Compressor FF: Fan Motor

MC : 마이컴 PS : 전원공급부MC: Micom PS: Power Supply

본 발명은 이조식 냉장고의 냉장실 온도제어방법에 관한 것으로, 특히 냉장실의 잦은 사용(빈번한 도어개폐)으로 발생되던 냉장실의 약냉현상을 방지하도록 한 냉장고의 냉장실 약냉방지 제어방법에 관한 것이다.The present invention relates to a method for controlling a refrigerator compartment temperature of a two-pack refrigerator, and more particularly, to a method of controlling a refrigerator's weak cold prevention to prevent a refrigerator's weak cooling phenomenon caused by frequent use of the refrigerator compartment (frequent door opening and closing).

종래, 냉장고의 냉장실 온도는 냉장실에 설치된 기계식 댐퍼(DAMPER)에 의해서만 제어되기 때문에, 냉동실의 온도가 충분히 떨어져 압축기와 냉각팬이 구동하지 않을때에 냉장실의 빈번한 사용에 따라 냉장실의 온도는 급격히 상승한다. 이때 상기 기계식 댐퍼의 열림각도가 커져도 냉장실 온도는 계속 상승하게 되는 문제점이 발생한 바, 이를 방지하기 위하여 냉장실에 온도감지소자를 채용하여 냉장실이 일정온도(약냉발생온도) 이상으로 상승하면 냉각팬을 강제로 구동시켜 냉동실의 냉기 일부를 냉장실로 유입시켜 약냉을 방지하고자 했다. 그러나 냉장실의 온도는 크게 낮아지지 않는 등 효과가 극히 미약했다. 이는 사용자가 냉동실의 온도를 「절전온도」(예 :-12℃)로 설정하여 사용할때 특히 냉장실의 약냉현상이 다발하였고, 수리자는 사용자에게 냉동실의 온도를 절전온도보다 낮은 설정온도를 선택하여 사용할 것을 권유하게 되고, 사용자가 전력소모를 줄이기 위해 선택한 「절전냉동」은 유명무실해지고, 이는 제품의 신뢰도에 치명적인 악영향을 끼쳐 온 것이다.Conventionally, since the temperature of the refrigerator compartment of the refrigerator is controlled only by a mechanical damper installed in the refrigerator compartment, when the temperature of the freezer compartment is sufficiently low and the compressor and the cooling fan are not driven, the temperature of the refrigerator compartment increases rapidly due to frequent use of the refrigerator compartment. . At this time, even if the opening angle of the mechanical damper increases, the temperature of the refrigerating chamber continues to rise. To prevent this, a temperature sensing element is employed in the refrigerating chamber, and if the refrigerating chamber rises above a predetermined temperature (weak cooling temperature), the cooling fan is forced. In order to prevent the cold cooling by driving some of the cold air in the freezer compartment into the refrigerating compartment. However, the effect of the refrigerating chamber was not so low that the temperature was very low. This is caused when the user sets the freezer's temperature to 'power saving temperature' (ex: -12 ℃), especially when there is a weak cooling phenomenon in the refrigerating compartment, and the repairer selects the freezer's temperature lower than the power saving temperature. It is recommended that the "power saving refrigeration" selected by the user to reduce power consumption is not known, which has had a fatal adverse effect on the reliability of the product.

본 발명은 상기한 문제점을 해결하고자 안출된 것으로, 냉장실의 온도가 약냉온도 이상으로 상승하면 냉동실의 온도와는 관계없이 압축기와 냉각팬을 소정형태로 제어하여 냉기를 급속히 냉장실로 투입시켜 주므로써 냉장실의 약냉을 방지할 수 있도록 한 냉장실의 약냉방지 제어방법을 제공하는 것에 본 발명의 목적이 있다.The present invention has been made to solve the above problems, when the temperature of the refrigerating chamber rises above the weak cooling temperature by controlling the compressor and the cooling fan in a predetermined form irrespective of the temperature of the freezer compartment, thereby rapidly entering the cold air into the refrigerating compartment. SUMMARY OF THE INVENTION An object of the present invention is to provide a method for controlling weak cooling of a refrigerating compartment to prevent weak cooling of the refrigerating compartment.

이와 같은 목적을 달성하기 위한 본 발명은 냉동실 온도감지소자 및 냉장실 온도감지소자를 구비한 냉장고의 냉장실 약냉방지 제어방법에 있어서, 냉장실 온도가 약냉온도인가를 검출하는 단계(100)와, 압축기 정지후 소정시간이 경과되었는가를 판단하는 단계(101)와, 상기 101단계의 긍정결과일때 압축기 및 냉각팬을 구동시키는 단계(102)와, 냉동실의 온도가 압축기 오프온도인가를 판단하는 단계(103)와, 상기 103단계의 긍정결과일때 압축기의 구동을 정지시키는 단계(104)와, 냉장실 온도가 비약냉온도인가를 판단하는 단계(105)와, 상기 105단계의 판단결과 긍정일 경우 압축기 및 냉각팬을 정지시키는 단계(106)와, 상기 101단계의 부정결과시 냉각팬만을 구동시키는 단계(107)와, 상기 103단계의 부정결과시 상기 105단계로 진행하는것과, 상기 105단계의 부정결과시 상기 101단계로 진행하는 과정을 구비하여 된 특징이 있다.In order to achieve the above object, the present invention provides a method for preventing cold storage of a refrigerator having a freezer compartment temperature sensing element and a refrigerator compartment temperature sensing element, the method comprising: detecting whether a refrigerator compartment temperature is a weak cooling temperature (100) and a compressor; (101) determining whether a predetermined time has elapsed after stopping; driving (102) the compressor and the cooling fan when the positive result of step 101; and determining whether the temperature of the freezer compartment is the compressor off temperature (103). ), Stopping the operation of the compressor (104) when the positive result of step 103, determining whether the refrigerating chamber temperature is a non-cooling temperature (105), and if the positive result of step 105, the compressor and cooling Stopping the fan 106, driving only the cooling fan when the negative result of step 101 (107), proceeding to the step 105 when the negative result of step 103, the negative of step 105 There is a feature provided to show the process proceeds to the step 101.

이하, 첨부된 도면에 의거하여 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

제 1 도는 냉장고의 개략적이고 일반적인 회로도를 도시한 것으로, 본 발명에 따른 일정프로그램을 내장한 원칩 마이컴(MC)의 입력포트(PI1)에는 냉동실 온도감지소자(TH1)(THERMISTOR), 저항(Rl)(R2) 및 콘덴서(C1)로 구성된 회로가 접속되어 냉동실의 소정부위에 설치된 온도감지소자(TH1)의 감지기능으로 냉동실의 온도를 감지하되, 감지방법은 상기 온도감자소자(TH1)와 저항(R1)과의 분배전압의 크기로서 감지하게 된다. 또한, 상기 마이컴(MC)의 입력포트(PI2)에는 냉장실 온도감지소자(TH2), 저항(R3)(R4) 및 콘덴서(C2)로 이루어진 회로가 접속되어, 냉장실의 소정부위에 설치된 온도감지소자(TH2)가 냉장실의 온도를 감지하여 그 일정신호를 마이컴(MC)의 입력포트(PI2)에 입력한다.1 is a schematic and general circuit diagram of a refrigerator. An input port PI 1 of a one-chip microcomputer MC having a predetermined program according to the present invention has a freezer temperature sensing element TH 1 (THERMISTOR) and a resistor ( A circuit consisting of R l ) (R 2 ) and a condenser (C 1 ) is connected to detect the temperature of the freezer compartment by a sensing function of a temperature sensing element (TH 1 ) installed at a predetermined portion of the freezer compartment. It is sensed as the magnitude of the divided voltage between (TH 1 ) and resistor (R 1 ). In addition, a circuit consisting of a refrigerating compartment temperature sensing element TH 2 , a resistor R 3 , R 4 , and a condenser C 2 is connected to an input port PI 2 of the microcomputer MC, and a predetermined portion of the refrigerating compartment is connected. The temperature sensing element TH 2 installed in the sensor senses the temperature of the refrigerating chamber and inputs a predetermined signal to the input port PI 2 of the microcomputer MC.

또한, 상기 마이컴(MC)의 출력포트(PO1)(PO2)에는 인버터(I1)(I2), 다이오드(D1)(D2), 릴레이(RY1)(RY2), 압축기(CP) 및 냉각팬(FF)으로 이루어진 회로가 연결되어, 상기 마이컴(MC)이 출력포트(PO1)로 하이(HIGH)신호를 출력하면, 이때 출력된 하이신호는 인버터(I1)를 통해 반전되어 릴레이(RYl)를 통전시키어 그 스위치 접점이 온됨으로써 압축기(CP)를 구동시킨다. 또한 상기 마이컴(MC)이 출력포트(PO2)로 하이신호를 출력하면, 이때 출력된 하이신호는 인버터(I2)를 통해 반전되어 릴레이(RY2)를 통전시킴으로써 냉각팬(FF)을 구동시킨다.In addition, the output port PO 1 (PO 2 ) of the microcomputer MC has an inverter I 1 (I 2 ), a diode D 1 (D 2 ), a relay RY 1 (RY 2 ), and a compressor. A circuit consisting of a CP and a cooling fan FF is connected, and when the microcomputer MC outputs a high signal to the output port PO 1 , the output high signal is transmitted through the inverter I1. Inverted to energize the relay RYl and turn on the switch contact to drive the compressor CP. In addition, when the microcomputer MC outputs a high signal to the output port PO 2 , the output high signal is inverted through the inverter I 2 to energize the relay RY 2 to drive the cooling fan FF. Let's do it.

PS는 전원공급부이고, AC 교류전원, Vcc1, Vcc2는 직류전원이다. 또한, 미도시된 온도설정수단에 의해 냉동실 온도 및 냉장실 온도가 사용자에 의해 설정되면, 냉동실 제어시에는 냉동실 온도감지소자(TH1)의 입력값, 곧 입력포트(PI1)로의 입력신호를 검출하여, 냉동실의 온도가 냉동실 설정온도와 유사해지도록 압축기(CP) 및 냉각팬(FF)을 온(ON), 오프(OFF) 출력제어를 하고, 냉장실 제어시에는 냉장실 온도감지소자(TH2)의 입력값, 곧 입력포트(PI2)로의 입력신호를 검출하여, 냉장실의 온도가 냉장실의 설정온도와 유사하도록 냉각팬(FF)을 온, 오프 출력제어한다.PS is power supply, AC AC power, Vcc 1 , Vcc 2 is DC power. In addition, when the freezer compartment temperature and the refrigerating compartment temperature are set by the user by the temperature setting means, not shown, the input value of the freezer compartment temperature sensing element TH 1 , that is, the input signal to the input port PI 1 , is detected during the freezer compartment control. Thus, the compressor CP and the cooling fan FF are turned on and off so that the temperature of the freezer compartment is similar to the set temperature of the freezer compartment. During the control of the refrigerator compartment, the refrigerator compartment temperature sensing element TH 2 is controlled. An input value, i.e., an input signal to the input port PI 2 is detected, and the cooling fan FF is turned on and off so that the temperature of the refrigerating compartment is similar to the set temperature of the refrigerating compartment.

제 2 도의 시간(t1) 이전의 상태는 정상적인 냉동실 및 냉장실 온도상태를 나타내고 있는데, 사용자가 냉동실의 온도를 -12℃(절전냉동)을 설정하면, -12℃의 ±α℃에서 압축기(CP) 및 냉각팬(FF)의 온, 오프임계점이 형성되어 냉동실을 평균 -12℃의 온도를 유지하게 되고, 냉장실은 사용자가 설정한 온도가 유지되도록 냉각팬(FF)이 온, 오프 구동하게 된다.The state before time t 1 of FIG. 2 shows normal freezer and refrigerator temperature conditions. When the user sets the freezer temperature to -12 ° C (power saving freezing), the compressor (CP) at ± 12 ° C of -12 ° C. ) And the on / off threshold points of the cooling fan FF are formed to maintain the freezer compartment at an average temperature of -12 ° C, and the refrigerating compartment drives the cooling fan FF on and off to maintain the temperature set by the user. .

여기서, 시간(t1) 직후 압축기(CP)가 오프되어 압축기(CP)의 온(ON) 온도에 도달하지 않은 상태에서 냉장실의 온도가 시간(t2)에서 약냉온도(8∼9℃)에 이르게 되면 압축기(CP) 및 냉각팬(FF)을 즉시 기동시켜 냉장실의 온도가 비약냉온도(4℃)에 이를때까지 구동시키되, 냉동실의 압축기 오프(OFF) 온도에서는 압축기(CP)의 구동을 중지시키되, 상기 시간(t3∼t4), 시간(t5~t6)은 압축기(CP)가 오프된후 재기동할때까지 소요되는 최소시간(6분)이다.Here, the temperature of the refrigerating chamber is a weak cooling temperature (8 to 9 ° C.) at time t 2 in a state in which the compressor CP is turned off immediately after the time t 1 and the temperature of the compressor CP is not reached. In this case, the compressor (CP) and the cooling fan (FF) are immediately started and driven until the temperature of the refrigerating chamber reaches the non-cooling temperature (4 ° C), but the compressor (CP) is driven at the compressor OFF temperature of the freezing chamber. Stop time, the time (t 3 ~ t 4 ), time (t 5 ~ t 6 ) is the minimum time (6 minutes) required to restart after the compressor (CP) is turned off.

따라서, 시간(t7)에 냉장실의 온도가 비약냉온도로 검출되면 다시 정상적인 제어로 환원되는 것이다.Therefore, when the temperature of the refrigerating chamber is detected as the non-weak cooling temperature at time t 7 , it is reduced to normal control again.

제 3 도는 본 발명에 따른 작동 플로우챠트로서 이를 통하여 본 발명의 작용 및 효과를 설명하면, 본 발명에 따른 회로에 전원이 인가되고, 마이컴(MC) 내장 프로그램에 의하여 냉장실 약냉방지 루틴이 개시되면, 마이컴(MC)은 냉장실 온도감지소자(TH2)를 통해 입력되는 값을 읽어들여(99단계) 현재 냉장실의 온도가 약냉온도인가를 판단(100단계)한다. 이때 제 2 도의 시간(t2)와 같은 약냉온도가 검출되면, 압축기(CP) 오프후 6분이 경과했는가를 판단(101단계)한다.3 is an operation flowchart according to the present invention, illustrating the operation and effects of the present invention. When power is applied to the circuit according to the present invention and the refrigerator compartment weak cooling prevention routine is started by a microcomputer (MC) built-in program, The microcomputer MC reads the value input through the refrigerating compartment temperature sensing device TH 2 (step 99) and determines whether the current temperature of the refrigerating compartment is a weak cooling temperature (100 steps). At this time, if a weak cooling temperature equal to the time t 2 of FIG. 2 is detected, it is determined whether 6 minutes have elapsed after the compressor CP is turned off (step 101).

상기 시간의 계수기능은 마이컴(MC)의 내장 타이머에 의해 가능해진다. 따라서, 압축기(CP) 구동후 6분이 경과되지 않았을 경우에는 압축기(CP)를 구동시킬 수 없는 관계로, 냉각팬(FF)만을 구동(107단계)시켜 일부 냉기가 냉장실로 투입되도록 하여 주며,105단계로 진행하여 냉장실의 온도가 비약냉온도가 되었는가를 판단하여, 상기 105단계의 판단결과 냉장실 비약냉온도에 도달되었으면 압축기(CP) 및 냉각팬(FF)의 구동을 중지(106단계)하고 다음 단계로 진행한다. 그러나 상기 105단계에서 냉장실 비약냉온도에 이르지 못했다면 상기 101단계로 다시 진행한다. 이 101단계에서 압축기(CP) 정지후 6분이 경과되었음이 판단되면 압축기(CP) 및 냉각팬(FF)을 구동(102단계)시키고, 그 다음 단계인 103단계에서는 냉동실이 압축기 오프온도에 이르렀는가를 판단한다. 이때 103단계의 판단결과 냉동실 압축기 오프온도가 검출되면 압축기(CP)를 오프하는 104단계를 수행하고, 전술한 105단계로 진행하나, 상기 103단계에서 냉동실 압축기 오프온도가 검출되지 아니하면 곧 바로 105단계를 수행하도록 하여 냉장실의 약냉을 신속히 방지하는 것이다.The counting function of the time is made possible by the built-in timer of the microcomputer MC. Therefore, when 6 minutes have not elapsed since the operation of the compressor CP, the compressor CP cannot be driven. Therefore, only the cooling fan FF is driven (step 107) so that some cool air is introduced into the refrigerating compartment. In step 105, it is determined whether the temperature of the refrigerating compartment has reached the non-cooling temperature. If the refrigeration room non-cooling temperature is reached, the operation of the compressor CP and the cooling fan FF is stopped (step 106). Proceed to step. However, if the refrigeration room non-chilling temperature is not reached in step 105, the process proceeds to step 101 again. In step 101, if it is determined that 6 minutes have elapsed after the compressor CP is stopped, the compressor CP and the cooling fan FF are driven (step 102). In step 103, the freezer compartment has reached the compressor off temperature. Judge. In this case, when the freezer compartment off temperature is detected, step 104 of turning off the compressor (CP) is performed, and the process proceeds to step 105 described above. By performing the steps to quickly prevent the weak cooling of the refrigerator compartment.

이상에서와 같이 본 발명은 냉장실의 빈번한 사용(갖은 도어 개폐시 발생)으로 발생되던 냉장실의 약냉현상을 방지하여 줄 수 있어 사용자에게 제품의 신뢰도를 높혀줄 수 있는 유용한 발명이다.As described above, the present invention is a useful invention that can prevent the weak cooling phenomenon of the refrigerating compartment caused by the frequent use of the refrigerating compartment (occurring upon opening and closing of the door), which can increase the reliability of the product to the user.

Claims (1)

냉동실 온도감지소자(TH1) 및 냉장실 온도감지소자(TH2)를 구비한 냉장고의 냉장실 약냉방지 제어방법에 있어서, 냉장실의 온도가 약냉온도인가를 검출하는 단계(100)와, 압축기 정지후 소정시간이 경과되었는가를 판단하는 단계(101)와, 상기 101단계의 긍정결과일때 압축기 및 냉각팬을 구동시키는 단계(102)와, 냉동실의 온도가 압축기 오프온도인가를 판단하는 단계(103)와, 상기 103단계의 긍정결과일때 압축기의 구동을 정지시키는 단계(104)와, 냉장실의 온도가 비약냉온도인가를 판단하는 단계(105)와, 상기 105단계의 판단결과 긍정일 경우 압축기 및 냉각팬을 정지시키는 단계(106)와, 상기 101단계의 부정결과시 냉각팬만을 구동시키는 단계(107)와, 상기 103단계의 부정결과시 상기 105단계로 진행하는 것과, 상기 105단계의 부정결과시 상기 101단계로 진행하는 과정을 구비하여 된 것을 특징으로 하는 냉장고의 냉장실 약냉방지 제어방법.In the refrigerator compartment weak cooling control method of the refrigerator having a freezer compartment temperature sensing element (TH 1 ) and the refrigerator compartment temperature sensing element (TH 2 ), the step (100) of detecting whether the temperature of the refrigerator compartment is a weak cooling temperature, and the compressor stop Determining whether the predetermined time has elapsed (101), driving (102) the compressor and the cooling fan when the positive result of step 101, and determining (103) whether the temperature of the freezer compartment is the compressor off temperature. And stopping (104) the operation of the compressor when the positive result of step 103; determining whether the temperature of the refrigerating chamber is a non-weak cooling temperature (105); and if the positive result of step 105 determines that the compressor and cooling Stopping the fan 106, driving only the cooling fan when the negative result of step 101 (107), proceeding to the step 105 when the negative result of step 103, and when the negative result of step 105 Proceed to step 101 above A fresh food compartment cooling about how the control method of a refrigerator, characterized in that the process is provided with a.
KR1019930014888A 1993-07-31 1993-07-31 Control method for low cooling prevention of cold rooms to refrigerators KR960015385B1 (en)

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KR100339530B1 (en) * 1997-06-11 2002-11-23 엘지전자주식회사 Freezing operation control method for refrigerator
KR100348354B1 (en) * 1998-11-25 2002-09-18 삼성종합화학주식회사 Polyolefin Resin Composition for Automobile Fender Protector
KR100294597B1 (en) * 1999-03-05 2001-07-04 윤종용 A method of driving fan motor in a kimch'i storehouse
KR100484970B1 (en) * 2002-09-04 2005-04-25 위니아만도 주식회사 Method for controlling compressor of kimchi storage
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