KR100202603B1 - Defosting method of refrigerator - Google Patents

Defosting method of refrigerator Download PDF

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Publication number
KR100202603B1
KR100202603B1 KR1019960061246A KR19960061246A KR100202603B1 KR 100202603 B1 KR100202603 B1 KR 100202603B1 KR 1019960061246 A KR1019960061246 A KR 1019960061246A KR 19960061246 A KR19960061246 A KR 19960061246A KR 100202603 B1 KR100202603 B1 KR 100202603B1
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KR
South Korea
Prior art keywords
defrost
heater
defrosting
temperature
defrost heater
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KR1019960061246A
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Korean (ko)
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KR19980043399A (en
Inventor
황귀난
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구자홍
엘지전자주식회사
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Priority to KR1019960061246A priority Critical patent/KR100202603B1/en
Publication of KR19980043399A publication Critical patent/KR19980043399A/en
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Publication of KR100202603B1 publication Critical patent/KR100202603B1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06Removing frost
    • F25D21/08Removing frost by electric heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002Defroster control
    • F25D21/006Defroster control with electronic control circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/02Refrigerators including a heater
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/12Sensors measuring the inside temperature

Abstract

본 발명은 냉장고의 제상방법에 관한 것으로 제상방법은 제상히터 표면주위에는 온도가 필요이상으로 높은 반면에 재상히터에서 먼 부위는 상대적으로 온도가 낮아 전체 공간 온도가 균일하지 않고, 또한 에바에 착상이 많을 때와 적을 때를 구분하지 못하고 단순히 제상센서의 센싱값에 의해 제상히터를 구동하기 때문에 제상히터의 효율이 낮아지는 문제점이 있었고, 제상히터 부위에는 높은 온도로 인해 절대습도가 높아 냉장고 운전시 냉동실에 물방울이 맺히게 되는 문제점이 있었다. 본 발명은 이러한 종래의 문제점을 해결하기 위해 최초 1주기 제상히터 온/오프시, 제상센서에 의해 감지된 온도차를 이용하여 에바표면의 착상상태를 예측하는 제1단계와; 상기 단계에서의 예측결과에 따라 온/오프주기를 선택하는 제2단계와; 상기 제2단계에서 선택된 주기로 제상히터의 온/오프를 제어하는 제3단계로 이루어진 냉장고의 제상방법을 창안한 것으로, 이와같이 에바의 착상상태를 파악하에 그에 따라 제상주기를 달리 함으로써 에바전체 공간온도를 균일하게 할 수 있어 열손실 및 누적을 방지할 수 있고, 제상시간의 단축 및 냉동실의 결빙을 줄일 수 있는 효과가 있다.The present invention relates to a defrosting method of a refrigerator. The defrosting method has a higher temperature than the surface of the defrosting heater, while the part far away from the reheating heater has a relatively low temperature, so that the overall space temperature is not uniform, and the frosting is on the EVA. There is a problem in that the efficiency of the defrost heater is lowered because the defrost heater is driven simply by sensing the defrost sensor, and the defrost heater part has high absolute humidity due to the high temperature. There was a problem that water droplets form in the. The present invention provides a first step of predicting the implantation state of the EVA surface by using the temperature difference sensed by the defrost sensor during the first one-cycle defrost heater on / off to solve this conventional problem; A second step of selecting an on / off period according to the prediction result in the step; Invented a defrosting method of a refrigerator comprising a third step of controlling the on / off of the defrost heater at the period selected in the second step, by evaluating the state of EVA implantation and changing the defrost cycle accordingly accordingly Since it can be made uniform, it is possible to prevent heat loss and accumulation, and to shorten the defrosting time and reduce freezing of the freezing chamber.

Description

[발명의 명칭][Name of invention]

냉장고의 제상방법How to defrost the refrigerator

[도면의 간단한 설명][Brief Description of Drawings]

제1도는 종래 냉장고에 있어서, 제상히터와 제상센서의 위치를 나타낸 도.1 is a view showing the position of the defrost heater and the defrost sensor in the conventional refrigerator.

제2도는 제1도에 있어서, 에바주위의 온도변화를 나타낸 그래프.FIG. 2 is a graph showing the temperature change around Eva in FIG.

제3도는 본 발명의 동작을 설명하기 위한 제상장치의 개략적인 블록 구성도.3 is a schematic block diagram of a defrosting apparatus for explaining the operation of the present invention.

제4도는 본 발명에 있어서, 제상주기의 일 실시예시 파형도.4 is a waveform diagram of an embodiment of a defrost cycle in the present invention.

제5도는 그릴토출구의 온도변화를 나타낸 그래프.5 is a graph showing the temperature change of the grill discharge port.

제6도는 냉동실의 온도변화를 나타낸 그래프.6 is a graph showing the temperature change of the freezer compartment.

제7도는 본 발명의 제상동작 흐름도.7 is a defrost operation flowchart of the present invention.

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

100 : 제상센서 200 : 제상히터100: defrost sensor 200: defrost heater

300 : 제어부 400 : 메모리300: control unit 400: memory

[도면의 간단한 설명][Brief Description of Drawings]

본 발명은 냉장고의 제상방법에 관한 것으로, 특히 에바의 착상상태를 파악하여 그에따라 제상히터의 온/오프주기를 달리하도록 함으로써 제상효율을 향상시키는데 적당 하도록 한 냉장고의 제상방법에 관한 것이다.The present invention relates to a method of defrosting a refrigerator, and more particularly, to a method of defrosting a refrigerator suitable for improving defrosting efficiency by identifying an implantation state of EVA and changing the on / off cycle of the defrost heater accordingly.

냉장고에 있어서, 종래의 일반적인 제상방법은 제상히터를 구동시켜, 그 제상히터에 의해 발생된 열을 이용하여 에바에 붙은 성애를 녹이도록 하였다.In a refrigerator, a conventional defrosting method is to drive a defrost heater to melt the frost attached to the EVA by using the heat generated by the defrost heater.

이때, 제1도에 도시된 바와같이 에바의 임의의 부위에 온도를 감지하는 제상센서를 부착하여 에바의 주위온도가 일정온도 이상이 되면 제상히터의 구동을 중지 시킴으로써 제상동작을 끝낸다.At this time, as shown in FIG. 1, the defrost sensor for detecting the temperature is attached to any part of the EVA, and when the ambient temperature of the EVA is higher than the predetermined temperature, the defrosting operation is stopped by stopping the driving of the defrost heater.

이때, 히터의 표면과 에바의 상단 및 하단의 온도변화는 제2도에 도시된 그래프와 같다.At this time, the temperature change of the surface of the heater and the top and bottom of the EVA is the same as the graph shown in FIG.

이상에서 설명한 바와같이 종래의 제상방법은 에바에 착상이 많을 때와 적을 때를 구분하지 못하고 단순히 에바의 임의의 부위에 부착한 제상센서의 센싱값에 의해 제상히터의 온/오프를 제어하였기 때문에 제상히터 표면온도주위에는 온도가 필요이상으로 높은 반면에 제상히터에서 먼 부위는 상대적으로 온도가 낮아 전체 공간 온도가 균일하지 않고, 제상히터 부위에는 높은 온도로 인해 절대습도가 높아 운전시 냉동실에 물방울이 맺히는 등 제상효율이 떨어지는 문제점이 있었다.As described above, the conventional defrosting method does not distinguish between when there is a lot of frosting and when there is a lot of defrosting, and the defrosting heater is controlled on or off by simply sensing the defrosting sensor attached to any part of the eva. While the temperature around the heater surface temperature is higher than necessary, the temperature far from the defrost heater is relatively low, so the overall space temperature is not uniform, and the dehumidification heater has a high absolute humidity due to the high temperature. There was a problem of defrosting efficiency such as condensation.

본 발명의 목적은 이러한 종래의 문제점을 해결하기 위해 제상히터의 최초 온/오프시의 온도차를 이용하여 에바표면의 착상상태를 예측하고 그 예측결과에 따라 제상히터의 온/오프 주기를 다르게 함으로써 제상효율을 향상시키도록 한 냉장고의 제상방법을 제공하는데 있다.The purpose of the present invention is to solve the conventional problems by using the temperature difference at the time of the first on / off of the defrost heater by predicting the frost state of the surface of the defrost by different on / off period of the defrost heater according to the prediction result It is to provide a defrosting method of the refrigerator to improve the efficiency.

상기 본 발명의 목적을 달성하기 위한 냉장고의 제상히터 제어방법은 최초 1주기 제상히터 온/오프시, 제상센서에 의해 감지된 온도차를 이용하여 에바표면에 착상상태를 예측하는 제1단계와; 상기 단계에서의 예측결과에 따라 온/오프주기를 선택하는 제2단계와; 상기 제2단계에서 선택된 주기로 제상히터의 온/오프를 제어하는 제3단계로 이루어 진다.Defrost heater control method of the refrigerator for achieving the object of the present invention comprises the first step of predicting the implantation state on the surface of the EVA using the temperature difference detected by the defrost sensor when the first cycle of defrost heater on / off; A second step of selecting an on / off period according to the prediction result in the step; The third step of controlling the on / off of the defrost heater at the cycle selected in the second step.

이하, 본 발명의 작용 및 효과에 관하여 첨부한 제3도 내지 제7도를 참조하여 설명하면 다음과 같다.Hereinafter, the operation and effects of the present invention will be described with reference to FIGS. 3 to 7.

먼저, 제3도는 본 발명의 동작을 설명하기 위한 제상장치의 개략적인 블록 구성도로서, 이에 도시한 바와같이 제상센서(100)에서 제상히터(200)의 표면온도를 감지하여 출력하면 제어부(300)는 이를 입력받아 제상히터(200)의 온/오프를 제어 하는데, 이때 최초 1주기 온/오프시 제상센서(100)에 의해 감지된 온도차를 이용하여 에바표면의 착상상태를 예측한다.First, FIG. 3 is a schematic block diagram of a defrosting apparatus for explaining the operation of the present invention. As shown in FIG. 3, when the surface temperature of the defrosting heater 200 is detected and output, the controller 300 ) Receives the input and controls the on / off of the defrost heater 200, and at this time, predicts the implantation state of the eva surface by using the temperature difference detected by the defrost sensor 100 during the first 1 cycle on / off.

상기 예측결과와 메모리(400)에 기 저장된 데이터값을 이용하여 온/오프 주기를 결정하고, 2주기부터는 그 결정된 주기에 따라 제상히터(200)의 온/오프를 제어한다.The on / off cycle is determined by using the prediction result and the data value pre-stored in the memory 400, and from 2 cycles, the on / off of the defrost heater 200 is controlled according to the determined cycle.

이때, 기본적으로 제상히터(200) 표면의 온도가 50도를 기준으로 제어한다.At this time, the temperature of the surface of the defrost heater 200 is basically controlled based on 50 degrees.

이를 좀더 자세히 설명하면 다음과 같다.If this is explained in more detail as follows.

먼저, 성애가 검출되면 제상히터(200)를 구동하였다가 제상히터(200)의 표면온도가 소정온도(50도)가 되면 제상히터(200)를 오프시키는데, 이와같이 최초 1주기 온/오프시 제상센서(100)를 통해 감지된 온도차를이용하여 에바표면에 착상상태를 예측한다.First, when defrost is detected, the defrost heater 200 is driven. When the surface temperature of the defrost heater 200 reaches a predetermined temperature (50 degrees), the defrost heater 200 is turned off. The temperature difference sensed by the sensor 100 is used to predict an implantation state on the surface of the EVA.

상기 예측된 결과에 따라 착상상태에 적합한 제상주기를 결정하여 2주기로부터 그 결정된 주기에 따라 제상히터(200)의 구동을 제어한다.According to the predicted result, the defrosting period suitable for the implantation state is determined and the driving of the defrosting heater 200 is controlled according to the determined period from two cycles.

예를들어 선택된 온/오프주기가 50대 50이면 제4도에 도시한 바와 같은 파형의 주기로 제상히터(200)를 제어한다.For example, if the selected on / off period is 50 to 50, the defrost heater 200 is controlled by the period of the waveform as shown in FIG.

이와같이 하면 그릴토출구의 온도변화를 나타낸 그래프인 제5도 및 냉동실의 온도변화를 나타낸 그래프인 제6도에 도시한 바와같이 온도의 변화가 급격히 변하지 않고, 총 제상시간이 줄어든다.In this way, as shown in FIG. 5, which is a graph showing the temperature change of the grill discharge port, and FIG. 6, which is a graph showing the temperature change of the freezer compartment, the change in temperature does not change rapidly, and the total defrosting time is reduced.

이상에서 상세히 설명한 바와 같이 본 발명은 에바의 착상상태를 파악하여 그에따라 제상주기를 달리 함으로써 에바전체 공간온도를 균일하게 할 수 있어 열손실 및 누적을 방지할 수 있고, 제상시간의 단축 및 냉동실의 결빙을 줄일 수 있는 효과가 있다.As described in detail above, the present invention can grasp the state of EVA and change the defrosting cycle accordingly, thereby making it possible to uniformize the entire EVA space temperature, thereby preventing heat loss and accumulation, and shortening the defrosting time and It is effective to reduce freezing.

Claims (1)

최초 1주기 제상히터 온/오프시, 제상센서에 의해 감지된 온도차를 이용하여 에바표면에 착상상태를 예측하는 제1단계와; 상기 단계에서의 예측결과에 따라 온/오프주기를 선택하는 제2단계와; 상기 제2단계에서 선택된 주기로 제상히터의 온/오프를 제어하는 제3단계로 이루어진 것을 특징으로 하는 냉장고의 제상방법.A first step of predicting an implantation state on the EVA surface by using the temperature difference sensed by the defrost sensor when the first one-cycle defrost heater is turned on / off; A second step of selecting an on / off period according to the prediction result in the step; And a third step of controlling the on / off of the defrost heater at a cycle selected in the second step.
KR1019960061246A 1996-12-03 1996-12-03 Defosting method of refrigerator KR100202603B1 (en)

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KR100202603B1 true KR100202603B1 (en) 1999-06-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11783692B2 (en) 2021-08-31 2023-10-10 Samsung Electronics Co., Ltd. Electronic apparatus and controlling method thereof
WO2024014659A1 (en) * 2022-07-12 2024-01-18 삼성전자주식회사 Electronic device and method for controlling electronic device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11783692B2 (en) 2021-08-31 2023-10-10 Samsung Electronics Co., Ltd. Electronic apparatus and controlling method thereof
WO2024014659A1 (en) * 2022-07-12 2024-01-18 삼성전자주식회사 Electronic device and method for controlling electronic device

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