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KR0162457B1 - Temperature control method of refrigerator freezer and defrost of evaporator - Google Patents

Temperature control method of refrigerator freezer and defrost of evaporator Download PDF

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Publication number
KR0162457B1
KR0162457B1 KR1019950070201A KR19950070201A KR0162457B1 KR 0162457 B1 KR0162457 B1 KR 0162457B1 KR 1019950070201 A KR1019950070201 A KR 1019950070201A KR 19950070201 A KR19950070201 A KR 19950070201A KR 0162457 B1 KR0162457 B1 KR 0162457B1
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South Korea
Prior art keywords
temperature
defrost
evaporator
freezer compartment
refrigerator
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KR1019950070201A
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KR970047606A (en
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진병엽
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구자홍
엘지전자주식회사
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    • 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
    • F25D21/004Control mechanisms
    • 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
    • F25D21/008Defroster control by timer
    • 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
    • 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
    • F25D2700/10Sensors measuring the temperature of the evaporator

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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)
  • Defrosting Systems (AREA)

Abstract

본 발명은 냉장고 냉동실의 제어방법에 관한 것으로, 종래의 냉장고는 제상과 냉동실의 온도제어를 하는데 있어서, 각각의 따로 설치된 센서를 이용함으로, 냉장고의 조립생산시 부품수의 증가와 더불어 공정수가 증가하게 되고, 생산비가 증가되는 문제점이 있었으며, 이러한 문제점을 해결하기 위하여 냉동실의 냉동센서를 없애고, 증발기에 설치되어 있는 제상센서에 의한 냉동실의 제어방법으로서, 냉동실의 냉동센서가 아닌 제상센서를 이용하여 냉동실에 설정된 온도를 제어하게 되며, 냉동센서가 필요없게 되어 냉장고의 조립생산시 부품수와 공정수가 절감됨과 더불어 생산비가 절감되는 효과가 있다.The present invention relates to a method for controlling a refrigerator freezer, and in the conventional refrigerator to control the temperature of the defrost and the freezer, by using a sensor installed separately, the number of processes increases with the increase of the number of parts during assembly production of the refrigerator. In order to solve this problem, the freezing sensor of the freezer compartment is removed and the control method of the freezer compartment by the defrost sensor installed in the evaporator is used as a control method of the freezer compartment rather than the freezing sensor of the freezer compartment. It controls the temperature set in the, there is no need for a refrigeration sensor, there is an effect of reducing the number of parts and the number of processes during the assembly production of the refrigerator and the production cost is reduced.

Description

냉장고 냉동실의 온도와 증발기의 제상 제어방법Temperature control method of refrigerator freezer and defrost of evaporator

제1도는 종래의 냉장고의 구조를 보인 사시도.1 is a perspective view showing the structure of a conventional refrigerator.

제2도는 종래의 냉장고 냉동실의 온도를 제어하는 과정을 설명하는 순서도.2 is a flowchart illustrating a process of controlling a temperature of a conventional refrigerator freezer compartment.

제3도는 종래의 냉장고의 제상센서와 냉동센서의 상호 관계를 설명하는 설명도.3 is an explanatory diagram illustrating a mutual relationship between a defrost sensor and a refrigeration sensor of a conventional refrigerator.

제4도는 본 발명에 의한 냉동실의 온도제어와 증발기의 제상을 설명하는 순서도.Figure 4 is a flow chart illustrating the temperature control of the freezer compartment and the defrost of the evaporator according to the present invention.

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

1 : 냉장고 2 : 냉동실1: refrigerator 2: freezer

3 : 냉장실 4 : 냉동센서3: cold storage room 4: freezing sensor

5 : 증발기 6 : 제상센서5: evaporator 6: defrost sensor

본 발명은 냉장고 냉동실의 온도와 증발기의 제상 제어방법에 관한 것으로, 특히 증발기에 설치되어 있는 제상센서를 이용하여 냉동실의 온도를 제어하고, 증발기의 제상을 제어할 수 있는 냉장고 냉동실의 온도와 증발기의 제상 제어방법에 관한 것이다.The present invention relates to a temperature of a refrigerator freezer compartment and a defrost control method of an evaporator. In particular, the temperature of the refrigerator freezer compartment and the evaporator of the refrigerator freezer can be controlled by controlling the temperature of the freezer compartment using a defrost sensor installed in the evaporator. It relates to a defrost control method.

종래의 일반적인 냉장고(1)는 도면 제1도에 도시된 바와 같이 상부에 식품을 냉동저장하는 냉동실(2)과 하부에는 식품을 신선하게 보관저장하는 냉장실(2)로 구성되어 있다.The conventional refrigerator 1 is composed of a freezer compartment 2 for freezing and storing food in the upper portion and a refrigerating compartment 2 for storing and storing food in the lower portion as shown in FIG. 1.

상기 냉동실(2)은 냉동실(2)의 온도를 제어하기 위한 냉동센서(4)가 구비되어 있고, 상기 냉동실의 배면에는 냉동실(2)과 냉장실(3)에 냉기를 만들어 공급할 수 있도록 증발기(5)와 순환팬(미도시)이 설치되고, 상기 증발기(5)에는 증발기(5)에 생성된 서리를 제거하기 위한 제상센서(6)와 제상히터(Heater)(미도시)가 구비되어 있다.The freezing chamber (2) is provided with a freezing sensor (4) for controlling the temperature of the freezing chamber (2), the evaporator (5) on the back of the freezing chamber to make and supply cold air to the freezing chamber (2) and the refrigerating chamber (3). ) And a circulation fan (not shown), the evaporator (5) is provided with a defrost sensor (6) and a defrost heater (not shown) for removing frost generated in the evaporator (5).

상기와 같이 구성된 냉장고에 있어서, 제2도를 참조하여 냉동실에 설정된 온도를 유지하는 과정을 설명하면 다음과 같다.In the refrigerator configured as described above, a process of maintaining the temperature set in the freezer compartment will be described with reference to FIG. 2.

냉동실(2)에 설치된 냉동센서(4)는 냉동실(2)의 온도를 감지하고, 상기 냉동센서(4)에 감지된 내용은 냉장고(1)를 제어하는 마이콤에 보내지게 되어 냉동실(2)의 온도가 압축기(미도시)를 구동하여야 하는 온도(일예로, -17℃)가 되면 압축기에 전원을 인가하여 냉동실(2)의 온도를 저하시키게 되고, 상기의 상태에서 냉동실(2)의 온도가 저하되어 압축기의 구동을 멈추어야 할 온도(일예로, -19℃)가 되면 압축기에 인가된 전원을 차단함으로써, 냉동실(2)의 온도는 설정된 값으로 유지되는 것이다.The freezing sensor 4 installed in the freezing chamber 2 senses the temperature of the freezing chamber 2, and the contents detected by the freezing sensor 4 are sent to the microcomputer that controls the refrigerator 1. When the temperature reaches a temperature at which the compressor (not shown) is to be driven (for example, -17 ° C), the power is applied to the compressor to lower the temperature of the freezer compartment 2, and the temperature of the freezer compartment 2 is maintained in the above state. When the temperature is lowered to stop the operation of the compressor (for example, −19 ° C.), the power applied to the compressor is shut off, so that the temperature of the freezing chamber 2 is maintained at a set value.

그리고, 증발기에 생성된 서리의 제거 과정을 설명하면 다음과 같다.And, the process of removing the frost generated in the evaporator is as follows.

증발기에 생성된 서리가 일정시간 착상되면 이 상태를 제상센서가 감지하고, 상기 제상센서가 감지한 내용은 냉장고를 제어하는 마이콤에 보내지게 되며, 마이콤은 증발기에 설치된 제상히터에 전원을 인가하고, 압축기와 순환팬에 공급된 전원을 차단함으로써, 증발기에 착상되어 있는 서리는 제거된다.When the frost generated in the evaporator is implanted for a certain time, the defrost sensor detects this state, and the detected content of the defrost sensor is sent to the microcomputer controlling the refrigerator, and the microcomputer applies power to the defrost heater installed in the evaporator. By shutting off the power supplied to the compressor and the circulation fan, the frost on the evaporator is removed.

이 때, 냉동실(2)의 냉동센서(4)는 수시로 냉동실 내의 온도를 감지하여 마이콤에 보내고, 마이콤은 냉동실(2)에 설정된 온도 보다 높게 되면 압축기와 순환팬에 전원을 인가하고, 증발기(5)의 제상히터의 전원을 차단함으로써, 냉동기능을 수행하게 된다.At this time, the freezing sensor (4) of the freezing chamber (2) detects the temperature in the freezing chamber from time to time and sends it to the microcomputer, when the microcomputer is higher than the temperature set in the freezing chamber (2), power is supplied to the compressor and the circulation fan, evaporator (5) By turning off the power of the defrost heater of), the freezing function is performed.

그리고, 상기의 냉동실(2) 온도제어과정과 제상과정의 상호관계를 제4도를 참조하여 설명하면 다음과 같다.In addition, the relationship between the temperature control process and the defrost process of the freezer compartment 2 will be described with reference to FIG.

도면상의 세로축은 냉동실의 온도를 나타내고, 가로축은 작동시간을 나타내며, 빗금친 시간 A1은 압축기의 작동이 멈춘 시간이고, A2는 압축기와 순환팬이 멈추고, 제상히터가 작동되는 시간을 나타낸 것이며, 위치 P1, P1'는 냉동센서가 감지할 필요가 있는 위치이고, P2, P2'는 제상센서가 감지할 필요가 있는 위치를 나타낸다.In the drawing, the vertical axis represents the temperature of the freezer compartment, the horizontal axis represents the operating time, the hatched time A 1 represents the time when the compressor is stopped, and the A 2 represents the time when the compressor and the circulation fan stop and the defrost heater is operated. , Position P 1 , P 1 'is the position that the refrigeration sensor needs to detect, P 2 , P 2 ' indicates the position that the defrost sensor needs to detect.

상기 설명된 내용을 보면, 동일하지 않는 시간에 제상센서(6)와 냉동센서(4)를 각각 사용하여 온도를 감지하고 있으므로 2개의 센서의 기능을 한개의 센서로서도 충분히 가능함을 알 수 있다.Looking at the above description, it can be seen that the defrosting sensor 6 and the freezing sensor 4 are used to sense the temperature at different times, so that the functions of the two sensors can be sufficient as one sensor.

그러나, 상기 설명한 바와 같은 냉장고는 제상과 냉동실의 온도제어를 하는데 있어서, 각각의 따로 설치된 센서를 이용함으로, 냉장고의 조립생산시 부품수의 증가와 더불어 공정수가 증가하게 되고, 생산비가 증가되는 문제점이 있었다.However, in the refrigerator as described above, in the temperature control of the defrost and the freezer compartment, by using the sensors installed separately, the number of parts increases with the increase of the number of parts during the assembly production of the refrigerator, and the production cost increases. there was.

따라서, 본 발명의 목적은 상기의 문제점을 해결하여 냉장고의 조립생산시 부품수와 공정수를 절감하고, 생산비를 절감할 수 있는 냉장고 냉동실의 온도와 증발기의 제상 제어방법을 제공함에 있다.Accordingly, an object of the present invention is to provide a method of controlling the temperature of the refrigerator freezer compartment and the defroster of the evaporator which can reduce the number of parts and the number of processes during assembly production of the refrigerator and reduce the production cost by solving the above problems.

본 발명의 목적은 냉동실의 냉동센서를 없애고, 냉동실의 증발기에 설치된 제상센서로 냉동실의 온도와 증발기의 제상을 함께 제어할 수 있도록 한 냉장고의 냉동실의 온도와 증발기의 제상 제어방법에 있어서, 압축기의 구동시간을 카운터하여 제상시기를 판별하는 단계와; 제상시점이면 압축기와 순환팬의 구동을 정지시키고 제상히터를 발열시키는 단계와; 발열된 온도에 따라 증발기 주위 온도 값을 읽어 제상종료시점을 결정하는 단계와; 제상이 종료되면 증발기 주위의 온도를 감지한 후 냉동실의 온도를 보상하는 단계와; 그리고 보상된 온도와 설정온도를 비교하여 압축기와 순환팬을 제어하여 냉동실의 온도를 제어하는 단계로 구성된 것을 특징으로 하는 냉동실의 온도 및 증발기의 제상 제어방법에 의하여 달성된다.An object of the present invention is to remove the freezing sensor of the freezer compartment, and to control the temperature of the freezer compartment and the defrost of the evaporator by the defrost sensor installed in the evaporator of the freezer compartment in the method of controlling the temperature of the freezer compartment and the defroster of the evaporator. Determining a defrosting time by counting a driving time; Stopping defrosting of the compressor and the circulating fan at a defrosting point and heating the defrost heater; Determining an end point of defrosting by reading an ambient temperature value in accordance with the exothermic temperature; Compensating the temperature of the freezer compartment after sensing the temperature around the evaporator when the defrost is finished; And controlling the compressor and the circulation fan by comparing the compensated temperature with the set temperature, thereby controlling the temperature of the freezer compartment.

이하, 본 발명에 의한 일실시예를 첨부된 도면에 의거하여 설명한다.Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

제5도는 본 발명에 의한 냉장고 냉동실의 제어방법을 보인 순서도이다.5 is a flowchart illustrating a control method of a refrigerator freezer compartment according to the present invention.

상기 도면을 참조하여 본 발명을 설명하면, 먼저 제상센서와 냉동센서의 온도차이를 시험한 후에 그 차이를 찾아서 보상한다.Referring to the present invention with reference to the drawings, first to test the temperature difference between the defrost sensor and the refrigeration sensor and then find the difference and compensate.

그리고, 제상센서의 온도를 읽고 압축기를 구동하여야 할 온도에서 압축기에 전원을 인가하고, 상기 압축기의 구동을 멈추어야 할 온도가 되면 압축기에 인가된 전원을 차단한다.Then, the temperature of the defrost sensor is read and power is supplied to the compressor at a temperature at which the compressor is to be driven. When the temperature reaches to stop driving of the compressor, the power to the compressor is cut off.

상기 전원을 인가한 시점과 전원을 차단한 시점을 카운터하여, 냉동저장된 식품의 양을 판단하고, 상기 저장된 식품의 양에 따른 냉동을 하기 위하여 압축기의 추가 구동시간을 계산하고, 압축기를 추가된 시간만큼 더 구동한다.The counter determines when the power is applied and when the power is cut off, and determines the amount of frozen food, calculates additional driving time of the compressor for freezing according to the amount of stored food, and adds the compressor. Drive as much as possible.

압축기의 구동시간을 적산하다가 증발기에 생성된 서리를 제거하여야 하는 특정한 시간이 되게 되고, 제상센서의 온도를 읽어서 제상히터에 전원을 인가하여야 할 조건을 만족하게 되면 제상히터에 전원을 인가하고, 압축기와 순환팬에 인가된 전원을 차단하여 제상을 하게 된다.After accumulating the running time of the compressor, it becomes a specific time to remove the frost generated in the evaporator. When the temperature of the defrost sensor is satisfied and the condition to apply power to the defrost heater is satisfied, the defrost heater is supplied with power. And defrost the power applied to the circulation fan.

상기 제상 중 제상센서에 감지된 온도가 제상히터에 인가된 전원을 차단하여야 할 조건에 이르게 되면, 제상히터에 인가된 전원을 차단하여 제상을 종료하고, 냉동실의 온도제어로 돌아가게 된다.When the temperature sensed by the defrost sensor of the defrost reaches the condition to cut off the power applied to the defrost heater, the power is applied to the defrost heater is terminated to end the defrost and return to the temperature control of the freezer compartment.

상기와 같은 본 발명에 의한 효과는 다음과 같다.Effects of the present invention as described above are as follows.

냉동실의 냉동센서가 아닌 제상센서를 이용하여 냉동실에 설정된 온도를 제어하게 됨으로써, 냉동센서가 필요없게 되고, 냉장고의 조립생산시 부품수와 공정수가 절감됨과 더불어 생산비가 절감되는 효과가 있다.By controlling the temperature set in the freezer using a defrost sensor instead of the freezing sensor of the freezer, there is no need for a freezing sensor, and the production cost is reduced and the number of parts and processes are reduced during assembly production of the refrigerator.

Claims (1)

냉동실의 증발기에 설치된 제상센서로 냉동실의 온도와 증발기의 제상을 함께 제어할 수 있도록 한 냉장고의 냉동실의 온도와 증발기의 제상 제어방법에 있어서, 압축기의 구동시간을 카운터하여 제상시기를 판별하는 단계와; 제상시점이면 압축기와 순환팬의 구동을 정지시키고 제상히터를 발열시키는 단계와; 발열된 온도에 따라 증발기 주위 온도값을 읽어 제상종료시점을 결정하는 단계와; 제상이 종료되면 증발기 주위의 온도를 감지한 후 냉동실의 온도를 보상하는 단계와; 그리고 보상된 온도와 설정온도를 비교하여 압축기와 순환팬을 제어하여 냉동실의 온도를 제어하는 단계로 구성된 것을 특징으로 하는 냉동실의 온도 및 증발기의 제상 제어방법.In the method of controlling the temperature of the freezer compartment of the refrigerator and the defroster of the evaporator to control the temperature of the freezer compartment and the defrost of the evaporator by a defrost sensor installed in the evaporator of the freezer compartment, the step of determining the defrost time by counting the drive time of the compressor and ; Stopping defrosting of the compressor and the circulating fan at a defrosting point and heating the defrost heater; Determining an end point of defrosting by reading an ambient temperature value of the evaporator according to the generated heat; Compensating the temperature of the freezer compartment after sensing the temperature around the evaporator when the defrost is finished; And controlling the compressor and the circulation fan by comparing the compensated temperature with the set temperature to control the temperature of the freezer compartment.
KR1019950070201A 1995-12-31 1995-12-31 Temperature control method of refrigerator freezer and defrost of evaporator Expired - Fee Related KR0162457B1 (en)

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Application Number Priority Date Filing Date Title
KR1019950070201A KR0162457B1 (en) 1995-12-31 1995-12-31 Temperature control method of refrigerator freezer and defrost of evaporator

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KR0162457B1 true KR0162457B1 (en) 1999-01-15

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