KR100360853B1 - Method for preventing cool-air leakage of refrigerator - Google Patents

Method for preventing cool-air leakage of refrigerator Download PDF

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Publication number
KR100360853B1
KR100360853B1 KR1019980018176A KR19980018176A KR100360853B1 KR 100360853 B1 KR100360853 B1 KR 100360853B1 KR 1019980018176 A KR1019980018176 A KR 1019980018176A KR 19980018176 A KR19980018176 A KR 19980018176A KR 100360853 B1 KR100360853 B1 KR 100360853B1
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KR
South Korea
Prior art keywords
time
refrigerator
defrosting
door
temperature
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KR1019980018176A
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Korean (ko)
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KR19990085628A (en
Inventor
황귀난
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주식회사 엘지이아이
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Priority to KR1019980018176A priority Critical patent/KR100360853B1/en
Publication of KR19990085628A publication Critical patent/KR19990085628A/en
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Publication of KR100360853B1 publication Critical patent/KR100360853B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F25D21/006—Defroster control with electronic control circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/02—Refrigerators including a heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/02—Sensors detecting door opening
    • 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

Abstract

PURPOSE: A method for preventing leakage of chilled air of refrigerator is provided to control heating duration of a defrosting heater differently depending on number of opening of a door. CONSTITUTION: A method comprises the steps of: a first step determining whether operating time accumulated since a refrigerator starts exceeds fixed time; a second step actuating the defrosting heater for short fixed time while operating the refrigerator if the accumulated operating time is determined to have passed the fixed time in the first step, and determining whether the operating time has passed fixed time; a third step determining whether a door of the refrigerator is opened over fixed number if the operating time is determined to have passed the fixed time in the second step; a fourth step actuating the defrosting heater for the short fixed time if the door is opened under the fixed number, and actuating the defrosting heater and determining whether temperature sensed by a defrosting sensor is over fixed temperature if the door is opened over the fixed time; and a fifth time keep actuating the defrosting heater if the temperature sensed by the defrosting sensor is under the fixed temperature, and stopping the defrosting heater and returning to the second step if the temperature sensed by the defrosting sensor is over the fixed temperature.

Description

냉장고의 냉기누설방지방법{METHOD FOR PREVENTING COOL-AIR LEAKAGE OF REFRIGERATOR}How to prevent cold air leakage in refrigerators {METHOD FOR PREVENTING COOL-AIR LEAKAGE OF REFRIGERATOR}

본 발명은 냉장고의 냉기누설방지방법에 관한 것으로, 특히 제상과 제상사이에 문을 일정횟수 이상 열지 않을 때는 히터의 발열시간을 짧게 하여 소비전력 및 고내 온도상승을 방지하도록 한 냉장고의 냉기누설방지방법에 관한 것이다.The present invention relates to a cold air leakage prevention method of the refrigerator, in particular, when the door is not opened more than a predetermined number of times between defrosting and defrosting the heat generation time of the heater to reduce the power consumption and high temperature increase in the refrigerator to prevent cold air leakage It is about.

도1은 종래 일반적인 냉장고의 구성을 보인 개략도로서, 이에 도시된 바와 같이 냉장고의 운전시간을 적산하여 그 적산기간이 일정시간에 도달하면 발열하는 제상히터(12)와; 상기 제상히터(12)가 발열하여 제상이 시작된 후 일정온도이상이면 이를 감지하는 제상센서(10)와; 저온저압인 액체상태의 냉매를 기체상태로 변화시키면서 외부의 열을 흡수하는 증발기(11)와; 냉장고의 문열림을 감지하는 문열림감지센서(13)를 구비하며, 이와 같은 종래 장치의 제상동작을 설명한다.1 is a schematic view showing the structure of a conventional conventional refrigerator, as shown in FIG. 1, a defrost heater 12 that generates heat by integrating the operating time of the refrigerator and reaches a predetermined time; A defrost sensor 10 which detects the defrost heater 12 when the defrost heater 12 generates a predetermined temperature after the defrost is started; An evaporator 11 for absorbing external heat while changing a liquid refrigerant having a low temperature and low pressure into a gas state; A door opening sensor 13 for detecting a door opening of a refrigerator is provided, and the defrosting operation of the conventional apparatus will be described.

먼저, 마이크로컴퓨터(미도시)는 증발기(11)의 운전시간이 일정시간에 도달하면 그 증발기(11)에 성에가 착상된 것으로 판단하게 된다.First, when the operation time of the evaporator 11 reaches a predetermined time, the microcomputer (not shown) determines that frost is formed on the evaporator 11.

따라서, 상기 마이크로컴퓨터(미도시)는 상기 증발기(11)와 팬(미도시)의 구동을 정지시키는 동시에 제상히터(12)를 구동시키고, 이에 따라 상기 제상히터(12)는 발열하여 제상을 실시함으로써 성에 및 얼음을 제거한다.Accordingly, the microcomputer (not shown) stops the driving of the evaporator 11 and the fan (not shown) and simultaneously drives the defrost heater 12. Accordingly, the defrost heater 12 generates heat to perform defrosting. Thereby removing frost and ice.

상기와 같은 제상이 수행되는 도중에 제상센서(10)에 의해 일정온도 이상이 검출되면 상기 마이크로컴퓨터(미도시)는 제상이 완료되었음을 판단하여 상기 제상히터(12)의 구동을 정지시킨다.When a predetermined temperature or more is detected by the defrost sensor 10 while the defrost is being performed, the microcomputer (not shown) determines that the defrost is completed and stops driving the defrost heater 12.

이후, 냉동센서(미도시)의 감지값에 따라 상기 마이크로컴퓨터(미도시)는 다시 증발기(11)와 팬(미도시)을 동작시켜 상기와 같은 과정을 반복 수행하도록 제어한다.Thereafter, the microcomputer (not shown) controls the control unit to repeatedly perform the above process by operating the evaporator 11 and the fan (not shown) according to the detection value of the refrigeration sensor (not shown).

즉, 제상제어시 냉장고의 마이크로컴퓨터(미도시)가 운전시간을 적산하여 적산시간이 일정시간에 도달하면 제상히터(12)를 발열시켜 제상동작을 수행하고, 제상이 끝나는 시점은 제상센서(10)가 일정온도 이상을 감지하면 그에 따라 제상히터(12)의 발열이 종료된다.That is, during the defrosting control, when the microcomputer (not shown) of the refrigerator accumulates the operation time and the integration time reaches a predetermined time, the defrosting heater 12 is heated to perform the defrosting operation. ) Detects a predetermined temperature or more, thereby generating heat of the defrost heater 12.

그러나, 상기와 같이 동작하는 종래 장치는 제상시 증발기에 착상이 없는 상태에도 운전시간의 적산이 일정시간에 도달하면 제상이 시작되는데, 이때 히터가 발열하여 종료되는 시간은 자연대류에 의해 온도가 상승하여 제상센서의 온도를 일정온도 이상으로 유지하여야 히터의 발열이 종료되므로 히터발열시간이 상당히 길게되어 소비전력 및 온도상승을 유발하는 문제점이 있었다.However, in the conventional apparatus operating as described above, the defrosting starts when the integration of the operating time reaches a certain time even when there is no implantation in the evaporator at the time of defrosting. At this time, when the heater generates heat, the temperature is increased by natural convection. Since the heat generation of the heater is terminated only when the temperature of the defrost sensor is maintained above a certain temperature, the heat generation time of the heater is considerably longer, causing power consumption and temperature rise.

따라서, 상기와 같은 문제점을 감안하여 창안한 본 발명은 제상히터의 정지신호를 문열림 횟수를 감지하여 문을 일정횟수 이상 열 때와 이하로 열 때를 차등하여 제상히터의 발열시간을 제어할 수 있도록 한 냉장고의 냉기누설방지방법을 제공함에 그 목적이 있다.Therefore, the present invention devised in view of the above problems can detect the number of door open times of the stop signal of the defrost heater to control the heating time of the defrost heater by differentially opening the door more than a certain number of times and when opening the door below. The purpose is to provide a cold air leakage prevention method of a refrigerator.

도1은 일반적인 냉장고의 구성을 보인 개략도.1 is a schematic view showing the configuration of a typical refrigerator.

도2는 본 발명 냉장고의 냉기누설방지방법에 대한 동작흐름도.Figure 2 is a flow chart for the cold air leakage prevention method of the present invention refrigerator.

상기와 같은 목적을 달성하기 위한 본 발명은 전원을 투입하여 냉장고를 동작시킨후 적산된 운전시간이 소정시간을 경과하였는 지를 판단하는 제1 단계와; 상기 제1 단계의 판단결과 적산된 운전시간이 소정시간을 경과하면 제상히터를 짧게 소정시간 발열시키면서 냉장고를 운전시켜 그 운전시간이 다시 소정시간 경과 하였는 지를 판단하는 제2 단계와; 상기 제2 단계의 판단결과 운전시간이 소정시간 경과하였으면 운전시간중 냉장고의 문이 소정횟수 이상 열렸는가를 판단하는 제3 단계와; 상기 제3 단계의 판단결과 냉장고의 문이 소정횟수 이상 열리지 않았으면 제상히터를 짧게 소정시간 발열시키고, 냉장고의 문이 소정횟수 이상 열렸으면 제상히터를 발열시키면서 제상센서가 소정온도이상을 감지하였는가를 판단하는 제4 단계와; 상기 제4 단계의 판단결과 제상센서가 소정 온도이상을 감지하지 않았으면 계속하여 제상히터를 발열시키고, 제상센서가 감지한 온도가 소정 온도이상이면 제상히터의 발열을 정지시킨후 상기 제2 단계로 궤환하는 제5 단계로 수행하는 것을 특징으로 한다.The present invention for achieving the above object is a first step of determining whether the integrated operation time has passed a predetermined time after operating the refrigerator by turning on the power; A second step of determining whether the operation time has elapsed again by operating the refrigerator while heating the defrost heater for a predetermined time when the accumulated operation time has passed a predetermined time as a result of the determination of the first step; A third step of determining whether the door of the refrigerator has been opened a predetermined number of times during the operation time when the operation time has elapsed for the predetermined time; If the door of the refrigerator does not open more than a predetermined number of times as a result of the determination of the third step, the defrost heater generates a short time for a predetermined time; Determining a fourth step; If the defrosting sensor does not detect the predetermined temperature or more as a result of the determination in the fourth step, the defrosting heater is continuously heated. If the temperature detected by the defrosting sensor is higher than the predetermined temperature, the defrosting heater is stopped. Characterized in that the fifth step of feeding back.

이하, 본 발명에 의한 냉장고의 냉기누설방지방법에 대한 작용 및 효과를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the operation and effects of the cold air leakage prevention method of the refrigerator according to the present invention will be described in detail.

도2는 본 발명 냉장고의 냉기누설방지방법에 대한 동작흐름도로서, 이에 도시한 바와같이 전원을 투입하여 냉장고를 동작시킨후 적산된 운전시간이 소정시간을 경과하였는 지를 판단하는 제1 단계와; 상기 제1 단계의 판단결과 적산된 운전시간이 소정시간을 경과하지 않았으면 상기 제1 단계로 궤환하고 운전시간이 소정시간을 경과하였으면 제상히터를 짧게 소정시간 발열시키면서 냉장고를 운전시켜 그 운전시간이 다시 소정시간 경과 하였는 지를 판단하는 제2 단계와; 상기 제2 단계의 판단결과 운전시간이 소정시간 경과하지 않았으면 상기 제2 단계로 궤환하고 운전시간이 소정시간 경과하였으면 운전시간중 냉장고의 문이 소정횟수 이상 열렸는가를 판단하는 제3 단계와; 상기 제3 단계의 판단결과 냉장고의 문이 소정횟수 이상 열리지 않았으면 제상히터를 짧게 소정시간 발열시킨후 상기 제2 단계로 궤환하고 냉장고의 문이 소정횟수 이상 열렸으면 제상히터를 발열시키면서 제상센서가 소정온도이상을 감지하였는가를 판단하는 제4 단계와; 상기 제4 단계의 판단결과 제상센서가 소정 온도이상을 감지하지 않았으면 계속하여 제상히터를 발열시키고 제상센서가 소정 온도이상이면 제상히터의 발열을 정지시킨후 상기 제2 단계로 궤환하는 제5 단계로 수행하며, 이와같은 본 발명의 동작을 도1을 참조하여 설명한다.FIG. 2 is a flow chart illustrating a method for preventing cold air leakage of a refrigerator according to an embodiment of the present invention, comprising: a first step of determining whether an integrated operating time has passed a predetermined time after operating a refrigerator by applying power; As a result of the determination of the first step, if the accumulated operating time does not pass a predetermined time, it returns to the first step, and when the operating time has elapsed, the operation time is reduced by operating the refrigerator while heating the defrost heater for a predetermined time. Determining whether a predetermined time has elapsed again; A third step of determining whether the door of the refrigerator has been opened more than a predetermined number of times during the operation time when the operation time has not elapsed for a predetermined time and the operation time has elapsed after the determination result of the second step; If the door of the refrigerator does not open more than a predetermined number of times as a result of the determination of the third step, the defrost heater is briefly heated for a predetermined time and then returned to the second step. A fourth step of determining whether a predetermined temperature or more is sensed; If the defrosting sensor does not detect the predetermined temperature or more as a result of the determination in the fourth step, the defrosting heater continues to generate heat; if the defrosting sensor is above the predetermined temperature, the defrosting heater stops heating and returns to the second step. This operation of the present invention will be described with reference to FIG.

먼저, 마이크로컴퓨터(미도시)는 증발기(11)의 운전시간이 일정시간에 도달하면 그 증발기(11)에 성에가 착상된 것으로 판단하게 되는데, 이때 상기 운전시간은 12시간22분으로 한다.First, when the operation time of the evaporator 11 reaches a predetermined time, the microcomputer (not shown) determines that the frost is implanted in the evaporator 11, wherein the operation time is 12 hours and 22 minutes.

따라서, 상기 마이크로컴퓨터(미도시)는 상기 증발기(11)와 팬(미도시)의 구동을 정지시키는 동시에 제상히터(12)를 짧게 소정시간 구동시키는데, 상기 소정시간은 4분정도가 적당하며 그 4분동안 상기 제상히터(12)는 발열하여 제상을 실시함으로써 성에 및 얼음을 제거한다.Therefore, the microcomputer (not shown) stops the driving of the evaporator 11 and the fan (not shown) and simultaneously drives the defrost heater 12 for a predetermined time, and the predetermined time is appropriate for about 4 minutes. The defrost heater 12 generates heat for 4 minutes to defrost and remove ice and ice.

이후, 냉동센서(미도시)의 감지값에 따라 상기 마이크로컴퓨터(미도시)는 다시 증발기(11)와 팬(미도시)을 동작시켜 다시 증발기(11)의 운전시간이 소정시간이상 경과하면 그 운전시간중 냉장고의 문열림이 소정횟수 이상인가를 판단하여 소정횟수 이하이면 제상히터(12)를 짧게 소정시간 발열시키고 냉장고를 계속하여 운전시킨다.Thereafter, the microcomputer (not shown) operates the evaporator 11 and the fan (not shown) again according to the detection value of the refrigeration sensor (not shown). It is determined whether the door opening of the refrigerator is greater than or equal to the predetermined number of times during the operation time, and if it is less than or equal to the predetermined number of times, the defrost heater 12 is shortly heated for a predetermined time and the refrigerator continues to operate.

만약, 상기 냉장고의 문열림횟수가 소정횟수 이상이면 상기 제상히터(12)를 발열시키는데, 상기 문열림횟수는 5회가 적당하며 이때 상기 제상히터(12)는 제상센서(10)가 감지한 온도가 소정 온도이상이 아니면 계속하여 발열하고 소정온도 이상이면 발열을 정지한다.If the number of door openings of the refrigerator is greater than or equal to a predetermined number of times, the defrost heater 12 is heated, and the number of door openings is five times, at which time the defrost heater 12 detects the temperature of the defrost sensor 10. If the temperature is not higher than the predetermined temperature, the heating is continued. If the temperature is higher than the predetermined temperature, the heating is stopped.

여기서, 상기 소정온도는 13도가 적당하며, 이후 상기와 같은 과정을 반복 수행한다.Here, the predetermined temperature is 13 degrees, and then repeats the above process.

즉, 제상제어시 냉장고의 마이크로컴퓨터(미도시)가 문열림감지센서(13)로 냉장고의 문의 열림횟수를 감지하여 일정횟수 이하로 문을 열게 되면 제상히터(12)의 발열시간을 제상센서(10)의 온도에 의하지 않고 짧게 소정시간 발열시키고, 문열림 횟수가 일정횟수 이상일 경우에만 상기 제상센서(10)의 온도감지에 의해 제상히터(12)의 발열시간을 조절한다.That is, during the defrosting control, when the microcomputer (not shown) of the refrigerator detects the number of openings of the door of the refrigerator with the door open sensor 13 and opens the door below a predetermined number of times, the heating time of the defrost heater 12 is defrosted. The heating time of the defrosting heater 12 is adjusted by detecting the temperature of the defrosting sensor 10 only when the number of door opening times is shorter than a predetermined number of times, regardless of the temperature of 10).

이상에서 상세히 설명한 바와같이 본 발명은 제상과 제상사이에 냉장고의 문을 소정 횟수이상 열지 않으면 소비자가 냉장고를 사용하지 않는 상태로 간주하고, 또한 냉장고의 문을 열지 않으면 증발기에 착상되는 착상의 양이 미미하여 증발기의 효율을 떨어뜨리지 못하므로 제상히터의 발열시간을 짧게 하여 소비전력 및 고내 온도 온도상승을 방지할 수 있는 효과가 있다.As described in detail above, in the present invention, if the door of the refrigerator is not opened more than a predetermined number of times between the defrost and the defrosting, the consumer is regarded as not using the refrigerator. Since the efficiency of the evaporator is insignificant, the heat generation time of the defrost heater can be shortened, thereby preventing the power consumption and the temperature increase in the internal temperature.

Claims (1)

전원을 투입하여 냉장고를 동작시킨후 적산된 운전시간이 소정시간을 경과하였는 지를 판단하는 제1 단계와; 상기 제1 단계의 판단결과 적산된 운전시간이 소정시간을 경과면 제상히터를 짧게 소정시간 발열시키면서 냉장고를 운전시켜 그 운전시간이 다시 소정시간 경과 하였는 지를 판단하는 제2 단계와; 상기 제2 단계의 판단결과 운전시간이 소정시간 경과하였으면 운전시간중 냉장고의 문이 소정횟수 이상 열렸는가를 판단하는 제3 단계와; 상기 제3 단계의 판단결과 냉장고의 문이 소정횟수 이상 열리지 않았으면 제상히터를 짧게 소정시간 발열시키고, 냉장고의 문이 소정횟수 이상 열렸으면 제상히터를 발열시키면서 제상센서가 소정온도이상을 감지하였는가를 판단하는 제4 단계와; 상기 제4 단계의 판단결과 제상센서가 소정 온도이상을 감지하지 않았으면 계속하여 제상히터를 발열시키고, 제상센서가 감지한 온도가 소정 온도이상이면 제상히터의 발열을 정지시킨후 상기 제2 단계로 궤환하는 제5 단계로 수행하는 것을 특징으로 하는 냉장고의 냉기누설방지방법.A first step of determining whether the accumulated operating time has passed a predetermined time after operating the refrigerator by turning on power; A second step of determining whether the operation time has elapsed again by operating the refrigerator while heating the defrost heater for a predetermined time when the accumulated operation time has passed a predetermined time as a result of the determination of the first step; A third step of determining whether the door of the refrigerator has been opened a predetermined number of times during the operation time when the operation time has elapsed for the predetermined time; If the door of the refrigerator does not open more than a predetermined number of times as a result of the determination of the third step, the defrost heater generates a short time for a predetermined time; Determining a fourth step; If the defrosting sensor does not detect the predetermined temperature or more as a result of the determination in the fourth step, the defrosting heater is continuously heated. If the temperature detected by the defrosting sensor is higher than the predetermined temperature, the defrosting heater is stopped. Cold leakage prevention method of the refrigerator, characterized in that performed in the fifth step of feeding back.
KR1019980018176A 1998-05-20 1998-05-20 Method for preventing cool-air leakage of refrigerator KR100360853B1 (en)

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