KR19990004639A - Driving control method of refrigerator - Google Patents
Driving control method of refrigerator Download PDFInfo
- Publication number
- KR19990004639A KR19990004639A KR1019970028766A KR19970028766A KR19990004639A KR 19990004639 A KR19990004639 A KR 19990004639A KR 1019970028766 A KR1019970028766 A KR 1019970028766A KR 19970028766 A KR19970028766 A KR 19970028766A KR 19990004639 A KR19990004639 A KR 19990004639A
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- compressor
- operation rate
- refrigerator
- temperature
- control method
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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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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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
- 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
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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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
- F25D2700/122—Sensors measuring the inside temperature of freezer compartments
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
본 발명에 따른 냉장고의 구동제어방법은 압축기를 냉동부하량에 따라 회전수를 가변시키고, 압축기가 저회전수로 구동중일 경우 단위시간당 압축기의 운전율을 산출하여 운전율이 기설정된 기준운전율 이상인 경우에는 압축기의 회전수를 증가시켜 구동되도록 한다.The drive control method of the refrigerator according to the present invention varies the rotation speed of the compressor according to the amount of refrigeration load, and when the compressor is running at low speed, the operation rate of the compressor per unit time is calculated and the operation rate is higher than the preset reference operation rate. It is to be driven by increasing the number of revolutions of the compressor.
따라서, 본 발명에 따른 냉장고의 구동제어방법에 의하여 고내온도 및 설정온도차에 의한 냉동부하조건이 일정하더라도 압축기가 저회전수로 구동시 외부의 외기온도변화에 따른 과부하조건을 판단하여 압축기의 냉동효율을 증가시킬 수 있는 이점이 있다. 또한, 압축기의 냉동효율 상승에 따라 신속한 냉각운전이 가능한 효과를 얻을 수 있다.Therefore, the refrigeration efficiency of the compressor is determined by determining the overload condition according to the external ambient temperature change when the compressor is driven at a low speed even if the refrigeration load condition due to the high internal temperature and the set temperature difference is constant by the drive control method of the refrigerator according to the present invention. There is an advantage that can increase. In addition, as the refrigeration efficiency of the compressor increases, it is possible to obtain an effect of enabling rapid cooling operation.
Description
본 발명은 냉장고의 구동제어방법에 관한 것으로, 더욱 상세하게는 단위시간당 압축기의 운전율에 따라 압축기의 구동 회전수를 가변시킬 수 있도록 된 냉장고의 구동제어방법에 관한 것이다.The present invention relates to a drive control method of a refrigerator, and more particularly, to a drive control method of a refrigerator that can vary the drive rotational speed of the compressor according to the operation rate of the compressor per unit time.
도 1은 종래 냉장고의 구성을 보인 종단면도이다. 도 1에 도시한 바와 같이, 종래의 냉장고는 상호 구획된 냉동실(2)및 냉장실(3)에 각각 증발기(21)(31) 및 팬(22)(32)이 설치된다. 냉장실(3) 및 냉동실(2)에는 각각 고내온도를 감지하는 냉장실 온도센서(33) 및 냉동실온도센서(23)가 설치되며, 냉장고가 설치된 주위의 온도를 감지하는 외기온도센서(7) 및 냉동실 도어(4)에는 사용자로부터 고내온도를 설정받기 위한 키이입력부(8)가 마련된다. 또한, 냉장고의 하단에는 상기 각 증발기와 함께 냉동사이클을 형성하는 압축기 및 응축기가 설치된다.1 is a longitudinal sectional view showing a configuration of a conventional refrigerator. As shown in FIG. 1, in the conventional refrigerator, evaporators 21, 31, and fans 22, 32 are respectively installed in the freezing compartment 2 and the refrigerating compartment 3 which are mutually partitioned. The refrigerating compartment 3 and the freezing compartment 2 are respectively equipped with a refrigerating compartment temperature sensor 33 and a freezing compartment temperature sensor 23 for detecting a temperature inside the refrigerator, and an outside air temperature sensor 7 and a freezing compartment for detecting an ambient temperature where the refrigerator is installed. The door 4 is provided with a key input unit 8 for setting a high internal temperature from the user. In addition, a compressor and a condenser are formed at the bottom of the refrigerator to form a refrigeration cycle together with the respective evaporators.
이러한 구성에서 제어부는 키이입력부(8)의 키이조작에 의해 설정받은 고내온도와 각각의 온도센서에서 감지된 고내온도를 비교하여 냉장실(3) 및 냉동실(2)에 대한 냉각운전의 수행여부를 판단하고, 판단결과에 따라 압축기(5)의 구동을 온오프시키게 된다.In this configuration, the controller compares the internal temperature set by the key operation of the key input unit 8 with the internal temperature detected by each temperature sensor to determine whether to perform the cooling operation for the refrigerating compartment 3 and the freezing compartment 2. Then, the driving of the compressor 5 is turned on and off according to the determination result.
일예로 종래 냉장고의 구동제어방법은 냉동실온도센서(23)에 의해 감지된 냉동실(2) 고내온도가 기설정된 일정 온도이상인 경우에는 냉각운전이 필요한 것으로 판단하고, 압축기(5)를 일정시간동안 혹은 냉동실(2) 고내온도가 일정 온도이하로 저하될 때까지 구동시키게 된다. 이때 압축기(5)는 기설정된 일정 회전수로 구동되게 된다. 또한, 냉동실(2)의 냉각운전수행시 냉장실(3)의 고내온도가 일정 온도이상이면 냉장실 팬(32)을 구동시켜 냉장실 증발기(31)의 냉기가 냉장실(3) 내부로 유입되어 냉장실(3)이 냉각될 수 있도록 한다.For example, the conventional drive control method of the refrigerator determines that a cooling operation is required when the inside temperature of the freezer compartment 2 detected by the freezer compartment temperature sensor 23 is higher than a predetermined temperature, and the compressor 5 is operated for a predetermined time or The freezer compartment 2 is driven until the internal temperature of the freezer compartment 2 drops below a certain temperature. At this time, the compressor 5 is driven at a predetermined constant rotation speed. In addition, if the internal temperature of the refrigerating compartment 3 is higher than a predetermined temperature during the cooling operation of the freezing compartment 2, the refrigerating compartment fan 32 is driven to allow cold air of the refrigerating compartment evaporator 31 to flow into the refrigerating compartment 3 and refrigerating compartment 3. To allow cooling).
이러한 종래의 냉장고 구동제어방법에서 알 수 있듯이 종래 냉장고에서는 압축기(5)가 냉동실 및 냉장실의 고내온도변화에 따른 냉동부하량의 차이에 상관없이 냉동실의 온도가 일정온도이상인 경우에는 항상 일정한 회전수로 구동되었다. 따라서, 냉동실의 고내온도와 기준온도와의 온도차가 큰 경우에는 냉동실의 고내온도가 기준온도로 저하되는 데에 오랜시간이 소요되게 되는 문제점이 있었다.As can be seen from the conventional refrigerator driving control method, in the conventional refrigerator, the compressor 5 is always driven at a constant rotational speed when the temperature of the freezer compartment is higher than a predetermined temperature regardless of the difference in freezer load due to the change in the internal temperature of the freezer compartment and the freezer compartment. It became. Therefore, when the temperature difference between the internal temperature of the freezer compartment and the reference temperature is large, there is a problem that it takes a long time for the internal temperature of the freezer compartment to decrease to the reference temperature.
또한, 외기온도센서(7)에 의해 감지된 주변온도는 냉장고의 설치환경에 따라 변화되게 되는 데, 이 때 냉장고의 주변온도가 높아져서 냉동효율이 저하되게 되고 그에 따라 압축기의 냉동부하가 증가하게 되는 문제점이 있었다.In addition, the ambient temperature detected by the outside air temperature sensor 7 is changed according to the installation environment of the refrigerator. At this time, the ambient temperature of the refrigerator is increased so that the refrigeration efficiency is lowered and thus the refrigeration load of the compressor is increased. There was a problem.
따라서, 본 발명은 이러한 종래의 문제점을 해결하기 위하여 안출된 것으로써 그 목적은 외기온도 및 고내온도의 변화에 따른 냉동부하량 및 냉동부하량에 따른 압축기의 단위시간당 운전비율에 따라 압축기의 구동 회전수를 가변시킴으로써 냉동효율을 향상시킬 수 있는 냉장고의 구동제어방법을 제공하고자 하는 것이다.Accordingly, the present invention has been made in order to solve such a conventional problem, the purpose of which is to drive the rotational speed of the compressor in accordance with the operation rate per unit time of the compressor according to the refrigeration load and the refrigeration load according to the change in the outside temperature and high temperature It is to provide a drive control method of the refrigerator that can improve the refrigeration efficiency by varying.
도 1은 일반적인 냉장고의 개략적인 구성을 보인 종단면도,1 is a longitudinal sectional view showing a schematic configuration of a typical refrigerator;
도 2는 본 발명에 따른 냉장고의 구성을 보인 제어블럭도,2 is a control block diagram showing a configuration of a refrigerator according to the present invention;
도 3은 본 발명에 따른 냉장고의 구동제어방법을 보인 플로우차트이다.3 is a flowchart illustrating a driving control method of a refrigerator according to the present invention.
도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings
7 : 외기온도센서, 23 : 냉동실온도센서,7: outside temperature sensor, 23: freezer temperature sensor,
33 : 냉장실온도센서, 40 : 제어부,33: refrigerator temperature sensor, 40: control unit,
44 : 운전시간누적부, 50 : 압축기,44: cumulative operating time, 50: compressor,
51 : 인버터부.51: inverter unit.
상기의 목적을 달성하기 위하여 본 발명에 따른 냉장고의 구동제어방법은 냉장실 및 냉동실의 고내온도와 기설정된 각각의 기준온도를 비교하여 압축기의 구동회전수를 기설정된 영역 내의 고회전수 및 저회전수로 가변구동시키도록 된 냉장고의 구동제어방법에 있어서, 압축기가 저회전수로 구동되는 경우 압축기의 구동시간을 카운트하는 단계, 상기 카운트된 시간에 의거하여 단위시간당 압축기의 운전율을 산출하는 단계, 상기 산출된 압축기의 운전율을 기설정된 압축기의 기준운전율과 비교하는 비교단계, 상기 비교결과 압축기의 운전율이 기준운전율이상이면 압축기의 운전율에 비례하여 현재 압축기의 회전수를 증가시키는 단계를 구비한 것을 특징으로 한다.In order to achieve the above object, the drive control method of the refrigerator according to the present invention compares the internal temperature of the refrigerator compartment and the freezer compartment with each of the preset reference temperatures, thereby varying the drive rotational speed of the compressor to a high and low rotational speed within a predetermined region. A drive control method of a refrigerator configured to be driven, the method comprising: counting a driving time of a compressor when the compressor is driven at a low rotational speed; calculating an operation rate of the compressor per unit time based on the counted time; Comparing the operation rate of the compressor with a preset operation rate of the preset compressor; and if the comparison result indicates that the operation rate of the compressor is equal to or greater than the reference operation rate, increasing the number of revolutions of the current compressor in proportion to the operation rate of the compressor. It is characterized by one.
이하에는 본 발명의 양호한 실시예에 따른 구성 및 작용효과를 상세하게 설명한다.Hereinafter, the configuration and the effect according to the preferred embodiment of the present invention will be described in detail.
먼저, 본 발명은 도 1 에 도시한 바와 같은 구성을 가지며 동일한 구성요소에 대해서는 동일한 참조부호를 사용하며, 동일요소에 대한 상세한 설명은 전술한 바와 같으므로 생략한다.First, the present invention has the configuration as shown in FIG. 1 and uses the same reference numerals for the same components, and detailed descriptions of the same elements are omitted as described above.
도 2 는 본 발명에 따른 냉장고의 구성을 보인 제어블럭도이다. 도 2에 도시한 바와 같이, 본 발명에 따른 냉장고는 냉동실(2) 및 냉장실(3)의 냉각운전 및 제상운전 등을 총괄적으로 제어하는 제어부(40)와, 냉장실(3) 및 냉동실(2)에 각각 설치되어 고내온도를 감지하는 냉장실 온도센서(33) 및 냉동실 온도센서(23)와, 냉장고 사용환경에 따른 주변온도의 변화를 감지하는 외기온도센서(7)와, 사용자로부터 고내온도를 설정받기 위한 기능선택부(8)와, 냉동실(2) 및 냉장실(3)의 각각에 마련되어 냉기를 생성하는 증발기와 고내공기와의 열교환을 촉진하는 냉동실 팬(22) 및 냉장실 팬(32)과, 상기 제어부(40)의 제어신호에 따라 냉동실 팬(22) 및 냉장실 팬(32)의 구동을 제어하는 냉동실 팬구동부(42) 및 냉장실 팬 구동부(41)와, 상기 증발기와 함께 냉동싸이클의 일요소를 이루는 압축기(50)를 구비한다.2 is a control block diagram showing the configuration of a refrigerator according to the present invention. As shown in FIG. 2, the refrigerator according to the present invention includes a control unit 40 which collectively controls the cooling operation and the defrosting operation of the freezing compartment 2 and the refrigerating compartment 3, the refrigerating compartment 3, and the freezing compartment 2. The refrigerator compartment temperature sensor 33 and the freezer compartment temperature sensor 23 installed at each of the high temperature sensors, an outside air temperature sensor 7 detecting a change in the ambient temperature according to the use environment of the refrigerator, and a high temperature inside the user are set. A freezing chamber fan 22 and a refrigerating chamber fan 32 which are provided in each of the function selection unit 8 for receiving, the freezing chamber 2 and the refrigerating chamber 3 to promote heat exchange between the evaporator generating cold air and the high internal air, The freezer compartment fan driver 42 and the refrigerator compartment fan driver 41 controlling the driving of the freezer compartment fan 22 and the refrigerating compartment fan 32 according to the control signal of the controller 40, together with the evaporator, an element of the freezing cycle. Compressor 50 to form a.
또한, 본 발명에 따른 냉장고는 각 온도센서 등에 의해 판단된 냉동부하에 따라 압축기(50)의 회전수를 가변시키는 인버터부(51)와, 압축기(50)의 구동시간을 적산하는 운전시간 누적부(44)를 구비한다. 이러한 구성을 갖는 본 발명에 따른 냉장고는 압축기(50)의 내부에 3상 DC 모터를 구비하고, 제어부(40)는 고내온도의 변화 및 외기온도의 변화에 따른 압축기(50)의 냉동부하량을 판단하여 냉동부하량에 따라 인버터부(51)의 구동을 제어하여 DC모터의 회전수를 가변시킴으로써 압축기(50)의 압축비 및 냉동효율을 향상시킬 수 있도록 한다.In addition, the refrigerator according to the present invention includes an inverter unit 51 for varying the rotation speed of the compressor 50 according to the refrigeration load determined by each temperature sensor and the like, and an operation time accumulation unit for accumulating the driving time of the compressor 50. 44 is provided. Refrigerator according to the present invention having such a configuration is provided with a three-phase DC motor in the compressor 50, the control unit 40 determines the refrigeration load amount of the compressor 50 according to the change in the internal temperature and the change in the outside air temperature. By controlling the drive of the inverter unit 51 in accordance with the amount of refrigeration load to change the rotational speed of the DC motor to improve the compression ratio and the refrigeration efficiency of the compressor (50).
도 3은 본 발명에 따른 냉장고의 구동제어방법을 보인 플로우차트이다. 도 3에 도시한 바와 같이, 본 발명에 따른 냉장고의 구동제어방법은 단계(s10)에서 냉동실 온도센서(23) 및 냉장실 온도센서(33)에 의해 냉동실(2) 및 냉장실(3)의 고내온도를 감지한다. 이때 감지된 냉동실(2) 온도를 단계(s12)에서는 압축기(50)의 구동여부를 판단하기 위하여 기설정된 냉동기준온도와 비교한다. 비교결과 냉동실(2) 온도가 냉동기준온도이상이면 단계(s14)에서 냉장실 온도센서(33)에 의해 감지된 냉장실(3) 고내온도와 냉장실(3)의 냉각운전여부를 판단하기 위하여 기설정된 냉장기준온도를 비교한다.3 is a flowchart illustrating a driving control method of a refrigerator according to the present invention. As shown in Figure 3, the drive control method of the refrigerator according to the present invention is the internal temperature of the freezer compartment 2 and the refrigerator compartment 3 by the freezer compartment temperature sensor 23 and the refrigerator compartment temperature sensor 33 in step (s10). Detect it. At this time, the detected freezer compartment 2 temperature is compared with a predetermined refrigeration reference temperature in step S12 to determine whether the compressor 50 is driven. As a result of the comparison, if the temperature of the freezer compartment 2 is equal to or higher than the refrigeration reference temperature, the preset refrigerating unit determines whether the inside temperature of the refrigerator compartment 3 detected by the refrigerator compartment temperature sensor 33 and the refrigeration operation of the refrigerator compartment 3 are detected in step S14. Compare the reference temperature.
비교결과 냉장실(3) 고내온도가 냉장기준온도이상이면 단계(s26)에서 인버터부(51)를 통해 압축기(50)를 정격회전수인 제 1 회전수 예컨데 약 3500[RPM]으로 구동시킨다. 반면, 상기 단계(s14)의 판단결과 냉장실(3) 고내온도가 냉장기준온도이하로 냉장실(3)의 냉각운전이 불필요한 경우에는 단계(s16)에서 압축기(50)를 상기 제 1 회전수보다 낮은 회전수 예컨데 약 1800[RPM] 내지 2600[RPM]으로 설정되는 제 2 회전수로 구동시키게 된다.As a result of the comparison, if the internal temperature of the refrigerating chamber 3 is equal to or higher than the refrigeration reference temperature, the compressor 50 is driven at the first rotational speed, for example, about 3500 [RPM], through the inverter unit 51 in step S26. On the other hand, if the refrigeration chamber 3 internal temperature is less than the refrigeration reference temperature as a result of the determination of step s14, and the refrigeration operation of the refrigerating chamber 3 is unnecessary, the compressor 50 is lower than the first rotational speed in step s16. The rotational speed is driven at a second rotational speed set, for example, about 1800 [RPM] to 2600 [RPM].
또한, 도시되지는 않았으나 냉동실(2) 및 냉장실(3)의 냉각운전요구가 있는 것으로 판단되면 압축기(50)의 구동과 동시에 냉각운전이 수행되는 실에 설치된 팬을 구동시키며, 이때 팬의 회전수는 압축기(50)의 회전수변화에 동기하여 가변가능하다.In addition, although not shown, if it is determined that there is a demand for cooling operation of the freezer compartment 2 and the refrigerating compartment 3, the fan 50 is driven at the same time as the drive of the compressor 50 and the cooling operation is performed, and the rotation speed of the fan Is variable in synchronization with the rotational speed change of the compressor 50.
이때, 단계(s16) 및 단계(s26)에서와 같이 냉동실(2) 및 냉장실(3)의 부하조건에 따라서 압축기(50)의 회전수를 가변시키는 것은 과부하조건 즉, 냉동실(2) 및 냉장실(3) 모두에서 냉각운전이 필요한 경우에는 압축기(50)를 정격회전수로 구동시키고 냉동실(2)에서만 냉각운전이 필요한 경우에는 정격회전수인 제 1 회전수보다 낮은 회전수인 제 2 회전수로 압축기(50)를 구동시킴으로써 냉동사이클 효율을 향상시켜 에너지 효율을 극대화시키고자 하는 것이다.At this time, varying the number of revolutions of the compressor 50 in accordance with the load conditions of the freezer compartment 2 and the refrigerating compartment 3 as in step (s16) and step (s26) is an overload condition, that is, the freezer compartment (2) and the refrigerating compartment ( 3) When the cooling operation is required in both cases, the compressor 50 is driven at the rated speed. When the cooling operation is required only in the freezer compartment 2, the compressor 50 is operated at the second rotation speed which is lower than the first rotation speed, which is the rated rotation speed. By driving the compressor 50 to improve the refrigeration cycle efficiency to maximize the energy efficiency.
한편, 상기 단계(s16)에서 압축기(50)를 제 2 회전수로 구동시킴과 동시에 단계(s18)에서는 압축기(50)의 구동개시와 동시에 운전시간 누적부(44)의 카운트를 증가시켜 압축기(50)가 제 2 회전수로 구동되는 구동시간을 적산하게 된다. 따라서, 단계(s20)에서는 전원인가시간과 상기 카운트된 압축기(50)의 구동시간에 의하여 단위시간당 압축기(50)의 운전율(가동율)을 산출하게 된다. 이때 산출되는 압축기(50)의 운전율은 상대적으로 압축기(50)의 부하량이 적은 상태에서 냉장고가 설치된 주위 온도등이 상승됨에 따른 압축기(50)의 냉동효율 저하를 판단하기 위한 것이다.On the other hand, while driving the compressor 50 at the second rotation speed in the step (s16) and at the same time in step (s18) the count of the running time accumulator 44 at the same time as the start of the drive of the compressor 50 is increased by the compressor ( 50) is integrated to drive time driven at the second rotational speed. Therefore, in step S20, the operation rate (operation rate) of the compressor 50 per unit time is calculated based on the power-on time and the drive time of the counted compressor 50. The operation rate of the compressor 50 calculated at this time is for determining a decrease in the refrigeration efficiency of the compressor 50 as the ambient temperature in which the refrigerator is installed increases in a state where the load of the compressor 50 is relatively low.
즉, 단계(s22)에서는 압축기(50)의 냉동효율 저하를 판단하기 위하여 상기 단계(s20)에서 산출된 압축기(50)의 운전율을 기설정된 기준운전율과 비교하게 된다. 비교결과 압축기(50)의 운전율이 기준운전율 이상인 경우에는 압축기(50)의 냉동부하가 적음에도 불구하고, 외기온도의 상승에 따라 압축기(50)의 운전율이 증가된 것으로 판단하게 된다.That is, in operation S22, the operation rate of the compressor 50 calculated in operation S20 may be compared with a preset reference operation rate in order to determine a decrease in the refrigeration efficiency of the compressor 50. As a result of the comparison, when the operation rate of the compressor 50 is greater than or equal to the reference operation rate, although the refrigeration load of the compressor 50 is small, it is determined that the operation rate of the compressor 50 increases as the outside air temperature increases.
따라서, 단계(s24)에서는 상기 단계(s20)에서 산출된 압축기(50)의 운전율에 비례하여 압축기(50)의 회전수를 증가시키게 된다. 일예로 상기 단계에서 산출된 압축기(50)의 운전율이 70%이라면 압축기(50)를 현재 구동회전수인 제 2 회전수 즉, 2400[RPM]에서 약 3480[RPM]까지 증가시켜 구동시키게 된다. 따라서 압축기(50)는 외기온도의 상승 등의 요인에 의해 부하조건이 변하더라도 현재 회전수보다 높은 회전수로 구동됨으로써 보다 높은 냉동능력을 발휘할 수 있게 된다.Therefore, in step S24, the rotation speed of the compressor 50 is increased in proportion to the operation rate of the compressor 50 calculated in step S20. For example, if the operation rate of the compressor 50 calculated in the above step is 70%, the compressor 50 is driven by increasing the second rotation speed, that is, the current driving speed, from 2400 [RPM] to about 3480 [RPM]. Therefore, even if the load conditions change due to factors such as an increase in the outside air temperature, the compressor 50 is able to exhibit a higher freezing capacity by being driven at a higher rotational speed than the current rotational speed.
이상에서 설명한 바와 같이, 본 발명에 따른 냉장고의 구동제어방법은 압축기를 냉동부하량에 따라 회전수를 가변시키고, 압축기가 저회전수(제 2 회전수)로 구동중일 경우 단위시간당 압축기의 운전율을 산출하여 운전율이 기설정된 기준운전율 이상인 경우에는 압축기의 회전수를 증가시켜 구동되도록 한다.As described above, the drive control method of the refrigerator according to the present invention varies the rotation speed of the compressor according to the amount of refrigeration load, and when the compressor is running at a low rotation speed (second rotation speed), the operation rate of the compressor per unit time is changed. When the operation rate is calculated to be equal to or more than the preset reference operation rate, the rotation speed of the compressor is increased to be driven.
따라서, 본 발명에 따른 냉장고의 구동제어방법에 의하여 고내온도 및 설정온도차에 의한 냉동부하조건이 일정하더라도 압축기가 저회전수로 구동시 외부의 외기온도변화에 따른 과부하조건을 판단하여 압축기의 냉동효율을 증가시킬 수 있는 이점이 있다. 또한, 압축기의 냉동효율 상승에 따라 신속한 냉각운전이 가능한 효과를 얻을 수 있다.Therefore, the refrigeration efficiency of the compressor is determined by determining the overload condition according to the external ambient temperature change when the compressor is driven at a low speed even if the refrigeration load condition due to the high internal temperature and the set temperature difference is constant by the drive control method of the refrigerator according to the present invention. There is an advantage that can increase. In addition, as the refrigeration efficiency of the compressor increases, it is possible to obtain an effect of enabling rapid cooling operation.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100719241B1 (en) * | 2005-08-10 | 2007-05-17 | 주식회사 대우일렉트로닉스 | Method for Controlling Operation of Inverter Refrigerator |
| KR100764795B1 (en) * | 2002-12-20 | 2007-10-11 | 엘지전자 주식회사 | Driving device and method of reciprocating compressor |
| KR20150000103A (en) * | 2013-06-24 | 2015-01-02 | 주식회사 대유위니아 | Method for temperature control of kimchi refrigerator |
| CN108195133A (en) * | 2017-12-29 | 2018-06-22 | Tcl家用电器（合肥）有限公司 | A kind of refrigerator and its control method, control device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101424560B1 (en) * | 2008-01-03 | 2014-07-31 | 삼성전자 주식회사 | Driving control method for refrigerator |
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1997
- 1997-06-28 KR KR1019970028766A patent/KR100207087B1/en not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100764795B1 (en) * | 2002-12-20 | 2007-10-11 | 엘지전자 주식회사 | Driving device and method of reciprocating compressor |
| KR100719241B1 (en) * | 2005-08-10 | 2007-05-17 | 주식회사 대우일렉트로닉스 | Method for Controlling Operation of Inverter Refrigerator |
| KR20150000103A (en) * | 2013-06-24 | 2015-01-02 | 주식회사 대유위니아 | Method for temperature control of kimchi refrigerator |
| CN108195133A (en) * | 2017-12-29 | 2018-06-22 | Tcl家用电器（合肥）有限公司 | A kind of refrigerator and its control method, control device |
| CN108195133B (en) * | 2017-12-29 | 2020-08-21 | Tcl家用电器（合肥）有限公司 | Refrigerator and control method and control device thereof |
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