KR100357465B1 - Method for defrosting operation of air-conditioner used both cooler and heater - Google Patents
Method for defrosting operation of air-conditioner used both cooler and heater Download PDFInfo
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- KR100357465B1 KR100357465B1 KR1019990051958A KR19990051958A KR100357465B1 KR 100357465 B1 KR100357465 B1 KR 100357465B1 KR 1019990051958 A KR1019990051958 A KR 1019990051958A KR 19990051958 A KR19990051958 A KR 19990051958A KR 100357465 B1 KR100357465 B1 KR 100357465B1
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- heat exchanger
- outdoor heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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Abstract
본 발명은 냉난방 겸용 에어컨의 난방운전시 실외열교환기에 착상되는 성에를 제거하기위한 제상운전 진입시 실외열교환기 코일의 온도가 빙점이하일 때 외부의 온도범위 대에 따라 사이클 지속 누적시간을 달리 설정하여 제상운전을 진행하도록 하는 냉난방 겸용 에어컨의 제상운전 제어방법에 관한 것으로, 제상운전 시점을 실외열교환기 코일온도가 빙점 이하의 온도일 때 실외 온도범위대를 다수개로 분리하여 각 온도범위대에 따라 사이클 누적 유지시간을 다르게 설정하여 외부의 온도에 따라 제상운전 시점이 다르도록 설정한 것을 특징으로 하여 난방운전중 실외열교환기의 코일에 형성되는 성에 형성에 미세하게 대응함으로써 난방운전이 에어컨 시스템에 따라 요구되는 최소 조건까지 운전이 가능하게 하여 빈번하게 발생되는 제상운전 회수를 줄이고, 난방운전을 최대한 지속시킴으로써 시스템의 효율 향상에 기여하고 사용자의 실내환경 변화감지를 최대한 억제할 수 있다는 이점이 있다.The present invention defrosting operation by setting the cycle duration cumulative time differently according to the outside temperature range when the temperature of the outdoor heat exchanger coil is below the freezing point when entering the defrosting operation to remove the frost that is implanted in the outdoor heat exchanger during heating operation of the combined air conditioning and air conditioning. The method for controlling defrosting operation of a combined air-conditioning and air conditioning system, wherein the defrosting operation is divided into a plurality of outdoor temperature ranges when the outdoor heat exchanger coil temperature is below the freezing point, and the cycle accumulation is maintained according to each temperature range. The defrosting operation time is set differently according to the external temperature by setting the time differently. The heating operation is required according to the air conditioning system by minutely responding to the frost formation formed in the coil of the outdoor heat exchanger during the heating operation. Defrosting operation frequently occurred by enabling operation up to conditions By reducing the number and continuing the heating operation as much as possible, it contributes to improving the efficiency of the system and can suppress the change of the indoor environment of the user as much as possible.
Description
본 발명은 냉난방 겸용 에어컨의 제상운전 제어방법에 관한 것으로서, 보다 상세하게는 냉난방 겸용 에어컨의 난방운전시 실외열교환기에 착상되는 성에를 제거하기위한 제상운전 진입시 실외열교환기 코일의 온도가 빙점이하일 때 외부의 온도범위 대에 따라 사이클 지속 누적시간을 달리 설정하여 제상운전을 진행하도록 하는 냉난방 겸용 에어컨의 제상운전 제어방법에 관한 것이다.The present invention relates to a method for controlling defrosting operation of a combined air conditioning and air conditioner, and more particularly, when the temperature of the outdoor heat exchanger coil when the temperature of the outdoor heat exchanger coil enters the defrosting operation to remove frost formed on the outdoor heat exchanger during the heating operation of the combined air conditioning and air conditioner. It relates to a defrosting operation control method of a combined air conditioning and air conditioning to proceed defrosting operation by setting the cycle duration cumulative time differently according to the temperature range.
일반적인 에어컨은 액체가 증발할 때 주위의 열을 흡수하는 현상을 이용하여 냉방작용을 하는 것으로서 이러한 냉방작용 이외에도, 제습작용을 함께 수행한다. 그런데, 냉난방 겸용 에어컨의 경우 냉방과 난방의 경우 냉매의 순환경로를 반대로 하여 난방운전시에는 실외의 열을 흡수하여 실내로 방출하게 되고, 냉방운전시에는 실내의 열을 흡수하여 실외로 방출하게 된다.In general, the air conditioner uses the phenomenon of absorbing the surrounding heat when the liquid evaporates, and performs cooling as well as dehumidification. By the way, in the case of air-conditioning combined air-conditioning and cooling and heating, the circulation path of the refrigerant is reversed so that the heat is absorbed and released into the room during the heating operation, and the heat is absorbed and released into the outdoor during the cooling operation. .
도1은 일반적인 냉난방 겸용 에어컨의 냉매순환도이다.1 is a refrigerant circulation diagram of a general air-conditioning combined air conditioner.
여기에 도시된 바와 같이 실외기(20)는 냉매를 압축시키는 압축기(210)와, 압축기(210)의 출력단에 냉매의 순환 경로를 변경하기 위한 사방변(240)이 설치된다. 그리고, 일측이 사방변(240)과 연결되어 실외에서 열교환이 이루어지는 실외열교환기(40)와, 일측이 사방변(240)과 연결되어 실내에서 열교환이 이루어지는 실내열교환기(30)와, 실내열교환기(30)의 타측과 실외열교환기(40)의 타측간에 매개된 감압장치(50)로 이루어진다.As shown here, the outdoor unit 20 includes a compressor 210 for compressing a refrigerant, and four sides 240 for changing a circulation path of the refrigerant at an output end of the compressor 210. In addition, an outdoor heat exchanger 40 having one side connected to the four sides 240 to heat exchange outdoors, and an indoor heat exchanger 30 having one side connected to the four sides 240 performing heat exchange indoors, and indoor heat exchange The pressure reducing device 50 is provided between the other side of the device 30 and the other side of the outdoor heat exchanger 40.
그리고, 실내열교환기(30)에는 실내온도를 측정하는 실내온도센서(110)와, 실내열교환기(30)의 코일온도를 측정하는 실내열교환기 코일온도센서(120)가 설치되고, 실외열교환기(40)에는 실외온도를 측정하는 실외온도센서(260)와, 실외열교환기(40)의 코일온도를 측정하는 실외열교환기 코일온도센서(270)가 설치된다.In addition, the indoor heat exchanger (30) is provided with an indoor temperature sensor (110) for measuring the indoor temperature, and an indoor heat exchanger coil temperature sensor (120) for measuring the coil temperature of the indoor heat exchanger (30). 40, an outdoor temperature sensor 260 for measuring an outdoor temperature and an outdoor heat exchanger coil temperature sensor 270 for measuring a coil temperature of the outdoor heat exchanger 40 are installed.
위와 같은 냉난방 겸용 에어컨의 냉매순환경로를 살펴보면 다음과 같다.Looking at the coolant net environmental path of the air-conditioning combined air conditioning as described above are as follows.
먼저, 냉방운전시에는 즉, 실선 화살표로 나타낸 바와 같이 압축기에서 압축된 냉매는 사방변(240)에서 실외열교환기(40)로 흐르도록 경로를 설정함에 따라 실외열교환기(40)로 흘러 함유된 열을 방출한 후 감압장치(50)로 보내지고, 다시 실내열교환기(30)로 보내져 액체상태에서 기체상태로 증발되면서 주위의 열을 흡수하는 열교환이 이루어진 후 사방변(240)을 통해 다시 압축기(210)로 보내져 순환하게 된다.First, during the cooling operation, that is, the refrigerant compressed by the compressor as shown by the solid arrow is flowed into the outdoor heat exchanger 40 as the path is set to flow from the four sides 240 to the outdoor heat exchanger 40. After dissipating the heat is sent to the decompression device 50, and again to the indoor heat exchanger (30) is evaporated in a gaseous state in the liquid state is made of heat exchange to absorb the surrounding heat is made through the compressor again through the four sides (240) Sent to 210 to cycle.
이때, 실내에 설치된 실내열교환기(30)에서 주위의 열을 흡수하기 때문에 실내를 냉방하게 된다.At this time, since the indoor heat exchanger 30 installed in the room absorbs the surrounding heat, the room is cooled.
다음으로, 난방운전시에는 점선 화살표로 나타낸 바와 같이 압축기(210)에서 압축된 냉매는 사방변(240)에서 실내열교환기(30)로 흐르도록 경로를 설정함에 따하 실내열교환기(30)로 흘러 함유된 열을 방출한 후 감압장치(50)로 보내지고, 다시 실외열교환기(40)로 보내져 액체상태에서 기체상태로 증발되면서 주위의 열을 흡수하는 열교환이 이루어진 후 사방변(240)을 통해 다시 압축기(210)로 보내져 순환하게 된다.Next, during the heating operation, the refrigerant compressed by the compressor 210 flows to the indoor heat exchanger 30 as the refrigerant flows from the four sides 240 to the indoor heat exchanger 30 as shown by the dotted arrow. After dissipating the contained heat is sent to the decompression device 50, and again to the outdoor heat exchanger (40) is evaporated in a gaseous state in the liquid state is a heat exchange to absorb the surrounding heat is made through the four sides (240) It is sent back to the compressor 210 to circulate.
이때, 실내에 설치된 실내열교환기(30)에서 냉매에 함유된 열을 방출하기 때문에 실내를 난방하게 된다.At this time, since the heat contained in the refrigerant is released from the indoor heat exchanger 30 installed in the room, the room is heated.
도 2는 일반적인 냉난방 겸용 에어컨의 전기적 구성을 나타낸 블록구성도이다.2 is a block diagram showing the electrical configuration of a general air-conditioning combined air conditioner.
여기에 도시된 바와 같이 실내기와 실외기로 구분되어 설치되고 서로 전기적인 통신으로 작동을 제어하게 된다.As shown here, the indoor unit and the outdoor unit are separately installed and controlled by electrical communication with each other.
먼저, 실내기(10)에는 실내온도를 측정하는 실내온도센서(110)와, 실내열교환기(30)의 코일온도를 측정하는 실내열교환기 코일온도센서(120)와, 실내열교환기(30)의 열교환을 촉진시키기 위한 실내팬(140)과, 실내팬(140)을 작동시키는 실내팬 구동부(150)와, 에어컨을 작동을 무선으로 제어하기 위한 리모콘 신호를 입력받는 리모콘 입력부(160)와, 실내온도센서(110)와 실내열교환기 코일온도센서(120)와, 리모콘 입력부(160)에서 입력되는 신호에 따라 실내팬(140) 및 실외기(20)의 작동을 제어하는 제 1마이컴(130)과, 제 1마이컴(130)의 상태를 표시하는 표시부(170)로 이루어진다.First, the indoor unit 10 includes an indoor temperature sensor 110 for measuring an indoor temperature, a coil temperature sensor 120 for measuring a coil temperature of an indoor heat exchanger 30, and an indoor heat exchanger 30. An indoor fan 140 for promoting heat exchange, an indoor fan driver 150 for operating the indoor fan 140, a remote controller input 160 for receiving a remote control signal for wirelessly controlling the operation of the air conditioner, and an indoor The temperature sensor 110 and the indoor heat exchanger coil temperature sensor 120, the first microcomputer 130 for controlling the operation of the indoor fan 140 and the outdoor unit 20 according to the signal input from the remote control input unit 160 and The display unit 170 displays a state of the first microcomputer 130.
그리고, 실외기(20)에는 실외온도를 측정하는 실외온도센서(260)와, 실외열교환기(40)의 코일온도를 측정하는 실외열교환기 코일온도센서(270)와, 실외열교환기(40)의 열교환을 촉진시키기 위한 실외팬(290)과, 실외팬(290)을 작동시키는 실외팬 구동부(280)와, 냉매를 압축시키기 위한 압축기(210)와, 압축기(210)를 작동시키는 압축기 구동부(220)와, 냉매의 순환경로를 절환하기 위한 사방변(240)과, 사방변(240)의 작동을 제어하는 사방변 구동부(230)와, 실외온도센서(260)와 실외열교환기 코일온도센서(270)의 값을 입력받고 제 1마이컴(130)과 통신하여 사방변구동부(230)와 실외팬 구동부(280)와 압축기 구동부(220)의 작동을 제어하는 제 2마이컴(250)으로 이루어진다.The outdoor unit 20 includes an outdoor temperature sensor 260 that measures an outdoor temperature, an outdoor heat exchanger coil temperature sensor 270 that measures a coil temperature of the outdoor heat exchanger 40, and an outdoor heat exchanger 40. An outdoor fan 290 for promoting heat exchange, an outdoor fan driver 280 for operating the outdoor fan 290, a compressor 210 for compressing a refrigerant, and a compressor driver 220 for operating the compressor 210. ), The four-sided side 240 for switching the circulation path of the refrigerant, the four-sided drive unit 230 for controlling the operation of the four-sided side 240, the outdoor temperature sensor 260 and the outdoor heat exchanger coil temperature sensor ( The second microcomputer 250 receives the value of 270 and communicates with the first microcomputer 130 to control the operation of the four-side drive unit 230, the outdoor fan driver 280, and the compressor driver 220.
위와 같이 이루어진 냉난방 겸용 에어컨의 난방운전시 실외열교환기(40)에서 주위의 열을 흡수하는 증발과정시 실외열교환기(40) 코일에 성에가 착상되기 때문에 이를 제거하기 위한 제상운전을 수행하게 된다.In the heating operation of the combined air-conditioning and air conditioning made as described above, the defrosting operation is performed to remove the frost on the coil of the outdoor heat exchanger 40 during the evaporation process of absorbing the surrounding heat from the outdoor heat exchanger 40.
도 3은 종래의 냉난방 겸용 에어컨의 제상운전 제어방법을 순차적으로 도시한 흐름도이다.3 is a flowchart sequentially illustrating a method for controlling defrosting of a conventional air-conditioning combined air conditioner.
여기에서 보는 바와 같이 난방운전이 진행될 때 실외열교환기 코일 온도가 0℃이하인가 판단한다(S310). 이때 0℃이상일 경우에는 계속 난방운전이 진행되지만 0℃이하일 경우에는 이 시점부터 난방운전 사이클 지속시간이 에어컨 시스템에 따라 누적되는 특정시간 N시간이 되었는가 판단한다(S320). 이때 누적된 특정시간이 N시간보다 작을 경우에는 계속해서 난방운전을 진행하지만 누적된 특정시간이 N시간 보다 클 경우에는 제상운전을 진입하기 위해 실내팬(140)과 실외팬(290)의 작동을 정지시키고 압축기(210)를 오프시킨다(S314). 그리고 사방변(240)을 오프시켜 냉매의 순환방향을 반대로 절환시켜 냉방운전시 냉매 순환 경로를 취하도록 한다(S316). 그런다음 압축기(210)를 작동시켜 제상운전을 진행시킨다(S318). 이 제상운전은 냉방운전과 동일한 작동으로 실외열교환기(40)에서 열을 방출하도록 하여 코일에 착상된 성에를 녹이게 된다.As shown here, when the heating operation is performed, it is determined whether the outdoor heat exchanger coil temperature is 0 ° C. or less (S310). At this time, if the heating operation continues to be 0 ℃ or more, but if it is below 0 ℃ it is determined whether the duration of the heating operation cycle is a specific time N time accumulated according to the air conditioning system (S320). At this time, if the accumulated specific time is less than N hours, heating operation continues, but if the accumulated specific time is greater than N hours, the operation of the indoor fan 140 and the outdoor fan 290 is performed to enter the defrosting operation. The compressor 210 is stopped (S314). In addition, the four sides 240 are turned off to reverse the circulation direction of the refrigerant to take the refrigerant circulation path during the cooling operation (S316). Then, the compressor 210 is operated to proceed with the defrosting operation (S318). This defrosting operation dissipates the frost formed on the coil by dissipating heat from the outdoor heat exchanger 40 in the same operation as the cooling operation.
이와 같이 제상운전을 진행한 후 실외열교환기 코일온도센서(270)의 온도값이 특정온도(Y) 이상인가 판단한다(S320). 이때 특정온도(Y) 이하일 경우에는 계속제상운전을 진행하고 특정온도(Y) 이상일 경우에는 압축기(210)의 작동을 오프시킨다(S322). 그리고 사방변(240)을 온시켜 냉매의 순환경로를 다시 난방운전시의 경로로 절환시킨다(S324). 그런다음 압축기(210)와 실외팬(290)을 작동시켜 난방운전이 진행되도록 한다(S326). 그리고, 실내열교환기 코일온도센서(120)의 온도값이 난방하기 위한 온도(Z)와 비교한다(S328). 그래서 실내열교환기 코일온도센서(120)의 온도값이 특정온도(Z) 이상일 경우 실내팬(140)을 작동시켜 실내를 난방시키게 된다(S330).As described above, after the defrosting operation is performed, it is determined whether the temperature value of the outdoor heat exchanger coil temperature sensor 270 is equal to or higher than a specific temperature Y (S320). At this time, if the specific temperature (Y) or less, continue the defrosting operation, and if the specific temperature (Y) or more to turn off the operation of the compressor 210 (S322). Then, the four sides 240 are turned on to switch the circulation path of the refrigerant back to the path during the heating operation (S324). Then, the compressor 210 and the outdoor fan 290 are operated to allow the heating operation to proceed (S326). Then, the temperature value of the indoor heat exchanger coil temperature sensor 120 is compared with the temperature (Z) for heating (S328). Thus, when the temperature value of the indoor heat exchanger coil temperature sensor 120 is above a specific temperature (Z), the indoor fan 140 is operated to heat the room (S330).
위와 같이 작동되는 냉난방 겸용 에어컨의 제상운전 제어방법은 실외열교환기에 착상되는 성에 덩어리의 형성변화에 대해서 마이컴이 미세하게 대응하지 못함으로써 난방 운전이 가능한 실외열교환기의 조건을 무시하고 빙점이하가 지속 누적되는 특정한 시간 N시간 이후에 제상과정을 행하기 때문에 제상운전 횟수가 빈번해 짐으로써 불가피하게 압축기의 단속운전도 증가하게 되어 누적 소비전력의 증가한다는 문제점이 있다.The defrosting operation control method of the combined air-conditioning and cooling air conditioner operates as described above, and microcomputer cannot cope with the formation of frost lump formed on the outdoor heat exchanger. Since the defrosting process is performed after a specific time N hours, the number of defrosting operations is frequent, which inevitably increases the intermittent operation of the compressor, thereby increasing the cumulative power consumption.
또한, 빙점온도 감지 후 난방운전 지속시간이 특정시간으로 제한되기 때문에 사용자에게도 불편할 뿐만 아니라 시스템의 효율 측면에도 불합리하다는 문제점이 있다.In addition, since the heating operation duration after the freezing point temperature is limited to a specific time, it is not only inconvenient for the user but also unreasonable in terms of efficiency of the system.
따라서, 본 발명은 상기와 같은 문제점을 해결하기 위해 창작된 것으로서, 본 발명의 목적은 냉난방 겸용 에어컨의 난방운전시 실외열교환기에 착상되는 성에를 제거하기 위한 제상운전 진입시 실외열교환기 코일의 온도가 빙점이하일 때 외부의 온도범위 대에 따라 사이클 지속 누적 시간을 달리 설정하여 설정된 누적시간이 경과한 후 제상운전이 진행되도록 하는 냉난방 겸용 에어컨의 제상운전 제어방법에 관한 것이다.Therefore, the present invention was created to solve the above problems, and an object of the present invention is to freeze the temperature of the outdoor heat exchanger coil during the defrosting operation to remove frost that is implanted in the outdoor heat exchanger during heating operation of a combined air conditioning and air conditioning. It relates to a defrosting operation control method of a combined air conditioning and air conditioning for the defrosting operation to proceed after the set cumulative time elapses by setting different cycle duration cumulative time according to the outside temperature range when the following.
도1은 일반적인 냉난방 겸용 에어컨의 냉매 순환도이다.1 is a refrigerant circulation diagram of a general air-conditioning combined air conditioner.
도 2는 일반적인 냉난방 겸용 에어컨을 나타낸 블록구성도이다.Figure 2 is a block diagram showing a general air-conditioning combined air conditioner.
도 3은 종래의 냉난방 겸용 에어컨의 제상운전 제어방법을 나타낸 흐름도이다.3 is a flowchart illustrating a defrosting operation control method of a conventional air-conditioning combined air conditioner.
도 4는 본 발명에 의한 냉난방 겸용 에어컨의 제상운전 제어방법을 나타낸 흐름도이다.4 is a flowchart illustrating a method for controlling defrosting of a combined air conditioning and air conditioner according to the present invention.
- 도면의 주요부분에 대한 부호의 설명 --Explanation of symbols for the main parts of the drawings-
30 : 실내열교환기 40 : 실외열교환기30: indoor heat exchanger 40: outdoor heat exchanger
120 : 실내열교환기 코일온도센서120: indoor heat exchanger coil temperature sensor
140 : 실내팬 210 : 압축기140: indoor fan 210: compressor
240 : 사방변 260 : 실외온도센서240: four sides 260: outdoor temperature sensor
270 : 실외열교환기 코일온도센서270: Coil temperature sensor of outdoor heat exchanger
290 : 실외팬290: Outdoor Fan
상기와 같은 목적을 실현하기 위한 본 발명은 난방운전시 실외열교환기 코일온도가 빙점이하 온도로 유지된 누적시간이 일정시간이 경과될 때 제상운전 시점으로 사방변의 작동을 제어하여 냉매의 순환경로를 변경함으로써 제상운전을 수행하는 냉난방 겸용 에어컨의 제상운전 제어방법에 있어서, 제상운전 시점을 실외열교환기 코일온도가 빙점 이하의 온도일 때 실외 온도범위대를 다수개로 분리하여 각 온도범위대에 따라 사이클 누적 유지시간을 다르게 설정하여 외부의 온도에 따라 제상운전 시점이 다르도록 설정한 것을 특징으로 한다.The present invention for realizing the above object is to control the operation of the four-sided direction to the defrosting operation when the accumulated time that the outdoor heat exchanger coil temperature is kept below the freezing point temperature during the heating operation to control the circulating path of the refrigerant In the defrosting operation control method of a combined air-conditioning and air conditioner which performs defrosting operation, the defrosting operation is divided into a plurality of outdoor temperature ranges when the outdoor heat exchanger coil temperature is below the freezing point and cycled according to each temperature range. The defrosting operation time is set differently according to an external temperature by setting different accumulated holding time.
위와 같이 이루어진 본 발명의 작동을 설명하면 다음과 같다.Referring to the operation of the present invention made as described above are as follows.
냉난방 겸용 에어컨에서 난방운전시 실외열교환기에서 주위의 열을 흡수할 때 코일에 착상되는 성애를 제거하기 위한 제상운전 진입시점을 판단할 경우 실외열교환기 코일온도가 빙점이하인가 비교한 후 빙점이하일 경우 외부의 온도를 측정하고 이 측정된 온도가 어느 온도범위대에 속하는가 판단하여 해당 온도범위대에 해당하는 사이클 누적 유지시간 동안 유지될 경우 제상운전이 진입되도록 한 것을 특징으로 한다.When determining the starting point of defrosting operation to remove the frost formed on the coil when the outdoor heat exchanger absorbs the surrounding heat during heating operation in a combined air-conditioning and air conditioner When the coil temperature is below freezing point after comparing with the freezing point It is characterized in that the defrosting operation is entered when the temperature is measured and judged which temperature range the measured temperature belongs to and is maintained for the cycle accumulated holding time corresponding to the temperature range.
이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명한다. 또한 본 실시예는 본 발명의 권리범위를 한정하는 것은 아니고, 단지 예시로 제시된 것이며 종래 구성과 동일한 부분은 동일한 부호 및 명칭을 사용한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only and the same parts as in the conventional configuration using the same reference numerals and names.
도 4는 본 발명에 의한 냉난방 겸용 에어컨의 제상운전 제어방법을 순차적으로 도시한 흐름도이다.4 is a flowchart sequentially illustrating a method for controlling defrosting of a combined air conditioning and air conditioner according to the present invention.
여기에서 보는 바와 같이 냉난방 겸용 에어컨의 난방운전시 제상운전의 진입을 판단하기 위해 먼저 실외열교환기(40) 코일온도가 0℃ 이하 온도인가 비교한다(S410). 그래서 실외열교환기(40) 코일온도가 0℃ 이하가 아닐 경우 즉, 빙점 이상일 경우에는 계속해서 난방운전을 진행한다.As shown here, in order to determine the entry of the defrosting operation during the heating operation of the combined air-conditioning and air conditioning, first, it is compared whether the temperature of the outdoor heat exchanger 40 coil is 0 ° C. or less (S410). Therefore, when the coil temperature of the outdoor heat exchanger 40 is not 0 ° C. or lower, that is, the freezing point or more, the heating operation continues.
그러나, 실외열교환기(40) 코일온도가 0℃ 이하일 경우에는 실외온도센서(260)에 의해 실외온도를 측정한 후 제 3설정온도(c)와 비교한다(S411). 이때 측정된 실외온도(To)가 제 3설정온도(c)보다 낮을 경우에는 사이클 누적 유지시간을 제 1설정시간(N1)으로 설정한다. 그런다음, 제 1설정시간(N1)이 경과되었는지 비교하여 경과되지 않았을 경우에는 난방운전을 계속진행하고 설정시간이 경과되었을 경우에는 제상운전을 진행하게된다(S412).However, when the coil temperature of the outdoor heat exchanger 40 is 0 ° C. or less, the outdoor temperature is measured by the outdoor temperature sensor 260 and then compared with the third set temperature c (S411). At this time, when the measured outdoor temperature To is lower than the third set temperature c, the cycle accumulation holding time is set to the first set time N1. Then, in comparison with the elapsed time of the first set time (N1), the heating operation is continued if not elapsed, and if the set time has elapsed, the defrosting operation is performed (S412).
또한, 실외열교환기(40)의 코일온도가 빙점이하이고, 측정된 실외온도(To)가 제 3설정온도(c)보다 높고 제 2설정온도(b)보다 낮을 경우에는 사이클 누적 유지시간을 제 2설정시간(N2)로 설정한다(S413). 그런다음, 제 2설정시간(N2)이 경과되었는지 비교하여 경과되지 않았을 경우에는 난방운전을 계속진행하고 설정시간이 경과되었을 경우에는 제상운전을 진행하게 된다(S414).In addition, when the coil temperature of the outdoor heat exchanger 40 is lower than the freezing point, and the measured outdoor temperature To is higher than the third set temperature c and lower than the second set temperature b, the cycle accumulated holding time is removed. 2 is set to the set time N2 (S413). Then, in comparison with whether the second set time N2 has elapsed, if it has not elapsed, heating operation continues, and if the set time has elapsed, defrosting operation is performed (S414).
그리고, 실외열교환기(40)의 코일온도가 빙점이하이고, 측정된 실외온도(To)가 제 2설정온도(b)보다 높고 제 1설정온도(a)보다 낮을 경우에는 사이클 누적 유지시간을 제 3설정시간(N3)로 설정한다(S415). 그런다음, 제 3설정시간(N3)이 경과되었는지 비교하여 경과되지 않았을 경우에는 난방운전을 계속진행하고 설정시간이 경과되었을 경우에는 제상운전을 진행하게 된다(S416).When the coil temperature of the outdoor heat exchanger 40 is lower than the freezing point, and the measured outdoor temperature To is higher than the second set temperature b and lower than the first set temperature a, the cycle cumulative holding time is eliminated. 3 Set to the set time (N3) (S415). Then, in comparison with whether the third set time N3 has elapsed, if it has not elapsed, heating operation continues, and if the set time has elapsed, defrosting operation is performed (S416).
한편, 실외열교환기(40)의 코일온도가 빙점이하이고, 측정된 실외온도(To)가 제 1설정온도(a)보다 높을 경우에는 사이클 누적 유지시간을 제 4설정시간(N4)로 설정한다. 그런다음, 제 4설정시간(N4)이 경과되었는지 비교하여 경과되지 않았을 경우에는 난방운전을 계속 진행하고 설정시간이 경과되었을 경우에는 제상운전을 진행하게 된다(S417).On the other hand, when the coil temperature of the outdoor heat exchanger 40 is lower than the freezing point and the measured outdoor temperature To is higher than the first set temperature a, the cycle accumulation holding time is set to the fourth set time N4. . Then, the comparison is made whether the fourth set time N4 has elapsed. If not, the heating operation is continued. If the set time has elapsed, the defrosting operation is performed (S417).
제상운전은 먼저, 실내팬(140)과 실외팬(290)의 작동을 정지시키고 압축기를 오프시킨다(S422). 그리고 사방변(240)을 오프시켜 냉매의 순환방향을 반대로 절환시켜 냉방운전시 냉매 순환 경로를 취하도록 한다(S424). 그런다음 압축기(210)를 작동시켜 제상운전을 진행시킨다(S426). 이 제상운전은 냉방운전과 동일한 작동으로 실외열교환기(40)에서 열을 방출하도록 하여 코일에 착상된 성에를 녹이게 된다.The defrosting operation first stops the operation of the indoor fan 140 and the outdoor fan 290 and turns off the compressor (S422). Then, the four sides 240 is turned off to reverse the refrigerant circulation direction to take the refrigerant circulation path during the cooling operation (S424). Then, the compressor 210 is operated to proceed with the defrosting operation (S426). This defrosting operation dissipates the frost formed on the coil by dissipating heat from the outdoor heat exchanger 40 in the same operation as the cooling operation.
이와 같이 제상운전을 진행한 후 실외열교환기 코일온도센서(270)의 온도값이 특정온도(Y) 이상인가 판단한다(S428). 이때 특정온도(Y) 이하일 경우에는 계속 제상운전을 진행하고 특정온도(Y) 이상일 경우에는 압축기(210)의 작동을 오프시킨다(S430). 그리고, 사방변(240)을 온시켜 냉매의 순환경로를 다시 난방운전시의 경로로 절환시킨다(S432). 그런다음 압축기(210)와 실외팬(290)을 작동시켜 난방운전이 진행되도록 한다(S434),As described above, after the defrosting operation is performed, it is determined whether the temperature value of the outdoor heat exchanger coil temperature sensor 270 is equal to or higher than a specific temperature Y (S428). At this time, if the temperature is less than the specific temperature (Y) continues the defrosting operation, and if the temperature is above the specific temperature (Y) to turn off the operation of the compressor 210 (S430). Then, the four sides 240 are turned on to switch the circulation path of the refrigerant back to the path during the heating operation (S432). Then, the compressor 210 and the outdoor fan 290 are operated to allow the heating operation to proceed (S434).
그리고, 실내열교환기 코일온도센서(120)의 온도값이 난방하기 위한 온도(Z)와 비교한다(S436). 그래서 실내열교환기 코일온도센서(120)의 온도값이 특정온도(Z) 이상일 경우 실내팬(140)을 작동시켜 실내를 난방시키게 된다(S438).Then, the temperature value of the indoor heat exchanger coil temperature sensor 120 is compared with the temperature (Z) for heating (S436). Therefore, when the temperature value of the indoor heat exchanger coil temperature sensor 120 is above a specific temperature (Z), the indoor fan 140 is operated to heat the room (S438).
위에서 제 1내지 제 3설정온도(a, b, c)는 제 1설정온도(a) < 제 2설정온도(b) < 제 3설정온도(c) 순으로 설정되어 있고, 사이클 누적 유지시간인 제 1내지 제 4설정시간(N1, N2, N3, N4)은 제 1설정시간(N1) < 제 2설정시간(N2) < 제 3설정시간(N3) < 제 4설정시간(N4) 순으로 설정되어 있다.In the above, the first to third set temperatures a, b, and c are set in the order of the first set temperature a, the second set temperature b, and the third set temperature c. The first to fourth set times N1, N2, N3, and N4 are the first set time N1 <the second set time N2 <the third set time N3 <the fourth set time N4 It is set.
즉, 낮은 온도에서는 짧은 시간에도 많은 성에가 형성되기 때문에 제상운전 진입이 빨리 이루어지도록 설정되어 있는 반면에 높은 온도에서는 제상운전을 위한 성에가 형성되는 시간이 길기 때문에 긴시간을 사이클 누적 시간으로 설정하고 있다.In other words, since a lot of frost is formed at a low temperature at a low time, the defrosting operation is set to be performed quickly, whereas at a high temperature, a long time is set as a cumulative cycle because the frost is formed for a defrosting operation. have.
따라서, 추운 날씨에는 제상운전이 빨리 이루어지고 따듯한 날씨에는 제상운전이 늦게 이루어지게 된다.Therefore, the defrosting operation is made early in cold weather, and the defrosting operation is made late in warm weather.
상기한 바와 같이 본 발명은 냉난방 겸용 에어컨의 난방운전시 실외열교환기에 착상되는 성에를 제거하기 위한 제상운전 진입시 열교환기의 코일온도가 영하의온도일 때 외부의 온도를 측정하여 외부의 온도범위에 따라 사이클 누적 유지시간을 다르게 설정하여 해당되는 설정시간이 경과할 때 제상운전을 진행하도록 함으로써 난방운전중 실외열교환기의 코일에 형성되는 성에 형성에 미세하게 대응함으로써 난방운전이 에어컨 시스템에 따라 요구되는 최소 조건까지 운전이 가능하게 하여 빈번하게 발생되는 제상운전 회수를 줄이고, 난방운전을 최대한 지속시킴으로써 시스템의 효율 향상에 기여하고 사용자의 실내환경 변화감지를 최대한 억제할 수 있다는 이점이 있다.As described above, the present invention measures the outside temperature when the coil temperature of the heat exchanger enters the defrosting operation to remove frost formed on the outdoor heat exchanger during the heating operation of the air conditioner for both heating and cooling according to the outside temperature range. By setting different cycle cumulative maintenance time to allow defrosting operation when the corresponding setting time has elapsed, it responds finely to the formation of frost formed on the coil of the outdoor heat exchanger during heating operation. By enabling the operation up to the condition, the number of frequent defrosting operations is reduced, and the heating operation is continued as much as possible, thereby contributing to the improvement of the efficiency of the system and the user's detection of the change in the indoor environment.
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| KR1019990051958A KR100357465B1 (en) | 1999-11-22 | 1999-11-22 | Method for defrosting operation of air-conditioner used both cooler and heater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102188081B1 (en) | 2020-09-02 | 2020-12-07 | 이유덕 | Cooling and heating system equipped with frost protection and defrost function |
| CN112460766A (en) * | 2020-12-01 | 2021-03-09 | 珠海格力电器股份有限公司 | Cold air prevention control method, device, equipment and readable medium |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645675B (en) * | 2019-09-23 | 2021-02-02 | 南京天加环境科技有限公司 | Improved defrosting control method for air conditioner |
| CN115031358B (en) * | 2022-05-27 | 2024-01-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioner control method and device, air conditioner and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100190126B1 (en) * | 1996-05-21 | 1999-06-01 | 윤종용 | Defrosting cycling decision method and its apparatus for evaporator of a refrigerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100190126B1 (en) * | 1996-05-21 | 1999-06-01 | 윤종용 | Defrosting cycling decision method and its apparatus for evaporator of a refrigerator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102188081B1 (en) | 2020-09-02 | 2020-12-07 | 이유덕 | Cooling and heating system equipped with frost protection and defrost function |
| CN112460766A (en) * | 2020-12-01 | 2021-03-09 | 珠海格力电器股份有限公司 | Cold air prevention control method, device, equipment and readable medium |
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