KR100626424B1 - Method for control defrosting of multi type air conditioner - Google Patents

Method for control defrosting of multi type air conditioner Download PDF

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KR100626424B1
KR100626424B1 KR1020040096447A KR20040096447A KR100626424B1 KR 100626424 B1 KR100626424 B1 KR 100626424B1 KR 1020040096447 A KR1020040096447 A KR 1020040096447A KR 20040096447 A KR20040096447 A KR 20040096447A KR 100626424 B1 KR100626424 B1 KR 100626424B1
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heating
temperature
defrosting
indoor units
heat exchanger
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KR1020040096447A
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Korean (ko)
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KR20060057338A (en
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권형진
정명진
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삼성전자주식회사
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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
    • 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
    • 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/11—Sensor to detect if defrost is necessary

Abstract

본 발명은 2개의 압축기와 1개의 실외팬을 가진 2-싸이클 방식의 멀티형 공기조화기의 제상제어방법에 관한 것으로, 운전모드(1실 난방, 2실 난방 또는 냉난방 혼용운전)에 따라 제상운전을 다르게 제어하여 제품의 성능과 시스템의 안정성을 보장하는데 그 목적이 있다.The present invention relates to a defrosting control method of a two-cycle multi-type air conditioner having two compressors and one outdoor fan. The defrosting operation is performed according to an operation mode (one-room heating, two-room heating, or a combined heating and cooling operation). Its purpose is to ensure product performance and system stability by controlling differently.

이를 위해 본 발명은, 복수의 압축기를 가지고 복수의 독립된 냉동싸이클을 형성하는 멀티형 공기조화기의 제어방법에 있어서, 상기 복수의 압축기에 연결된 복수의 실내기를 선택된 운전모드에 따라 냉방 또는 난방운전하고, 상기 복수의 실내기 중 적어도 하나 이상이 난방운전인가 판단하고, 적어도 하나 이상이 난방운전이면 난방운전중인 실외열교환기의 온도를 감지하고, 감지된 실외열교환기의 온도를 미리 정해진 제상운전온도와 비교하여 상기 실외열교환기 온도가 제상운전온도범위이면 상기 복수 실내기의 운전모드에 따라 제상운전을 제어한다.To this end, the present invention, in the control method of a multi-type air conditioner having a plurality of compressors to form a plurality of independent refrigeration cycle, the plurality of indoor units connected to the plurality of compressors are cooled or heated operation according to the selected operation mode, It is determined whether at least one of the plurality of indoor units is a heating operation, and when at least one of the indoor units is a heating operation, the temperature of the outdoor heat exchanger in the heating operation is sensed, and the temperature of the detected outdoor heat exchanger is compared with a predetermined defrosting operation temperature. If the outdoor heat exchanger temperature is within the defrosting operation temperature range, the defrosting operation is controlled according to the operation mode of the plurality of indoor units.

Description

멀티형 공기조화기의 제상제어방법{Method for control defrosting of multi type air conditioner}Defrosting control method of multi type air conditioner {Method for control defrosting of multi type air conditioner}

도 1은 본 발명에 의한 멀티형 공기조화기의 냉매유로도,1 is a refrigerant flow path of a multi-type air conditioner according to the present invention;

도 2는 본 발명의 일실시예에 의한 멀티형 공기조화기의 제상제어 구성도,2 is a defrost control configuration diagram of a multi-type air conditioner according to an embodiment of the present invention;

도 3은 본 발명에 의한 멀티형 공기조화기의 제상제어방법의 동작 흐름도,3 is an operation flowchart of a defrost control method of a multi-type air conditioner according to the present invention;

도 4는 본 발명에 의한 멀티형 공기조화기의 난방측 제상제어방법의 동작 흐름도,4 is an operation flowchart of a heating side defrosting control method of a multi-type air conditioner according to the present invention;

도 5는 본 발명에 의한 멀티형 공기조화기의 냉방측 제상제어방법의 동작 흐름도.5 is an operation flowchart of a cooling side defrost control method of a multi-type air conditioner according to the present invention;

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 실외기 12a,12b : 압축기10: outdoor unit 12a, 12b: compressor

14a,14b : 사방밸브 16a,16b : 실외열교환기14a, 14b: Four-way valve 16a, 16b: Outdoor heat exchanger

18 : 실외팬 22a,22b : 전동변18: outdoor fan 22a, 22b: electric valve

26a,26b : 실외배관온도센서 30,40 : A,B실 실내기26a, 26b: Outdoor piping temperature sensor 30,40: Indoor unit A, B

150 : 제어부150: control unit

본 발명은 복수의 압축기를 가지고 복수의 독립된 냉동싸이클을 형성하는 냉난방 겸용의 멀티형 공기조화기에 관한 것으로, 특히 실외열교환기 표면에 발생된 성에를 제거하기 위한 멀티형 공기조화기의 제상제어방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-type air conditioner for both heating and cooling, having a plurality of compressors to form a plurality of independent refrigeration cycles, and more particularly, to a defrosting control method for a multi-type air conditioner for removing frost generated on the surface of an outdoor heat exchanger. .

일반적으로, 공기조화기는 실내의 냉방 또는 난방을 수행하기 위한 목적으로 사용되는 장치로서, 이러한 공기조화기에는 그 내부로 냉매가 순환되는 통상의 냉동싸이클이 적용되어 액체상태의 냉매가 기화할 때에 주위의 열을 흡수하며 액화할 때에 그 열을 방출하는 특성에 의하여 냉방 또는 난방작용을 수행하게 되며, 공기조화기의 냉방 또는 난방작용은 그 냉매의 순환방향에 따라 결정된다.In general, an air conditioner is a device used for cooling or heating a room, and a general refrigeration cycle in which a refrigerant is circulated therein is applied to the air conditioner, so that when the liquid refrigerant evaporates, Cooling or heating is performed by the characteristic of absorbing the heat and releasing the heat, and the cooling or heating of the air conditioner is determined by the circulation direction of the refrigerant.

한편, 통상의 공기조화기는 하나의 실내공간마다 각각 하나의 공기조화기를 설치하는 것이 일반적이나, 최근에는 하나의 공기조화기에 상기와 같은 냉동싸이클을 2개 이상 구비하여 그 효율을 향상시키는 멀티형 공기조화기가 널리 이용되고 있다. 이러한 멀티형 공기조화기는 복수의 실내공간에 대하여 각각 냉방 또는 난방운전을 수행한다.On the other hand, a conventional air conditioner is generally installed one air conditioner for each indoor space, but recently, a multi-type air conditioner to improve the efficiency by having two or more such refrigeration cycles in one air conditioner Groups are widely used. Such a multi-type air conditioner performs cooling or heating operations for a plurality of indoor spaces, respectively.

이러한 멀티형 공기조화기에서 난방운전을 수행할 경우, 실외열교환기의 표면온도는 대기에 비하여 상대적으로 낮아지게 되는데, 이로 인하여 실외열교환기의 표면에는 상대적으로 고온인 대기로부터 응축된 수분이 달라붙게 되고, 이 수분은 실외열교환기 표면의 낮은 온도로 인하여 결빙되어 실외열교환기의 표면에 착상이 시작된다.When the heating operation is performed in such a multi-type air conditioner, the surface temperature of the outdoor heat exchanger is relatively lower than that of the atmosphere. As a result, the surface of the outdoor heat exchanger adheres moisture condensed from a relatively high temperature atmosphere. However, this moisture freezes due to the low temperature of the surface of the outdoor heat exchanger and starts to form on the surface of the outdoor heat exchanger.

실외열교환기의 표면에 수분의 결빙상태는 시간이 지남에 따라 점점 두꺼워 지며, 이에 따라 실외열교환기를 통과하는 실외공기의 풍량이 감소하여 실외열교환기에서의 열교환 매체와 실외공기와의 열교환 효율이 떨어지게 되므로 실외열교환기에 부착된 성에를 제거하기 위한 제상운전이 필요하게 되었다.The moisture freezing on the surface of the outdoor heat exchanger becomes thicker with time, which reduces the air volume of the outdoor air passing through the outdoor heat exchanger, thereby reducing the heat exchange efficiency between the heat exchange medium and the outdoor air in the outdoor heat exchanger. Therefore, defrosting operation to remove the frost attached to the outdoor heat exchanger is required.

이러한 멀티형 공기조화기에서 제상운전을 수행하는 방법은 복수의 실내기가 운전되고 있는 상태에서 어느 하나의 실내기에 의하여 제상운전을 수행하게 될 경우, 다른 실내기의 동작유무에 관계없이 모든 실내기의 동작을 정지시키면서 실외팬을 오프시키고, 냉동싸이클을 냉방으로 전환시켜 압축기에서 압축된 열교환 매체가 해당 실외열교환기로 공급되도록 함으로서 열교환 매체가 실외열교환기 내에서 액화되는 과정에서 방출된 열에 의하여 실외열교환기의 표면에 부착된 성에를 제거하는 것이다.In the multi-type air conditioner, the defrosting operation is performed when the defrosting operation is performed by any one indoor unit while a plurality of indoor units are operating, and stops the operation of all indoor units regardless of the operation of other indoor units. While the outdoor fan is turned off and the refrigeration cycle is switched to cooling, the compressed heat exchange medium is supplied to the corresponding outdoor heat exchanger so that the heat exchange medium is liquefied in the outdoor heat exchanger. To remove the frost attached.

그런데, 이와 같은 종래 멀티형 공기조화기의 제상운전방법은 하나의 실외팬을 공용으로 사용하는 2-싸이클 방식의 공기조화기에서 두 개의 독립된 냉동싸이클이 독립적으로 운전 중 한쪽의 냉동싸이클만 제상운전을 수행하고 다른 한쪽의 냉동싸이클에 별도의 제어를 하지 않으면 제품의 성능과 시스템의 안정성을 보장할 수 없다는 문제점이 있었다.However, in the defrosting operation method of the conventional multi-type air conditioner, in the two-cycle type air conditioner using one outdoor fan in common, two independent refrigeration cycles independently operate only one refrigeration cycle during defrosting operation. There was a problem that the performance of the product and the stability of the system cannot be guaranteed unless the control is performed and the separate control of the other refrigeration cycle.

따라서, 본 발명은 상기와 같은 종래의 문제점을 해결하기 위한 것으로, 본 발명의 목적은 2개의 압축기를 가진 2-싸이클 방식의 멀티형 공기조화기에서 운전모드(1실 난방, 2실 난방 또는 냉난방 혼용운전)에 따라 제상운전을 다르게 제어하여 제품의 성능과 시스템의 안정성을 보장할 수 있는 멀티형 공기조화기의 제상제 어방법을 제공하는데 있다.Accordingly, the present invention is to solve the conventional problems as described above, the object of the present invention is a two-cycle multi-type air conditioner with two compressors operating mode (1 room heating, 2 room heating or air-conditioning mixed use It is to provide a defrosting control method of a multi air conditioner that can guarantee the product performance and system stability by controlling the defrosting operation differently.

상기 목적을 달성하기 위하여 본 발명은 복수의 압축기를 가지고 복수의 독립된 냉동싸이클을 형성하는 멀티형 공기조화기의 제어방법에 있어서, 상기 복수의 압축기에 연결된 복수의 실내기를 선택된 운전모드에 따라 냉방 또는 난방 운전하고, 상기 복수의 실내기 중 적어도 하나 이상이 난방운전인가 판단하고, 적어도 하나 이상이 난방운전이면 난방운전중인 실외열교환기의 온도를 감지하고, 감지된 실외열교환기의 온도를 미리 정해진 제상운전온도와 비교하여 상기 실외열교환기 온도가 제상운전온도범위이면 상기 복수 실내기의 운전모드에 따라 제상운전을 제어하되; 상기 복수 실내기의 운전모드가 1실 난방운전일 경우, 해당 압축기와 실외팬을 정지하고 사방밸브를 냉방모드로 전환한 후 해당 압축기를 최대로 운전하여 제상운전을 수행하는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a control method of a multi-type air conditioner having a plurality of compressors to form a plurality of independent refrigeration cycles, wherein a plurality of indoor units connected to the plurality of compressors are cooled or heated according to a selected operation mode. Determine whether at least one of the plurality of indoor units is a heating operation, and if at least one of the indoor units is a heating operation, sense a temperature of an outdoor heat exchanger in heating operation, and determine a temperature of the detected outdoor heat exchanger in a predetermined defrosting operation temperature. When the outdoor heat exchanger temperature is in the defrosting operation temperature range compared to the control operation of the defrosting operation according to the operation mode of the plurality of indoor units; When the operation mode of the plurality of indoor units is a one-room heating operation, the compressor and the outdoor fan are stopped, the four-way valve is switched to the cooling mode, and the compressor is operated at the maximum to perform defrosting operation.

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또한, 본 발명은 복수의 압축기를 가지고 복수의 독립된 냉동싸이클을 형성하는 멀티형 공기조화기의 제어방법에 있어서, 상기 복수의 압축기에 연결된 복수의 실내기를 선택된 운전모드에 따라 냉방 또는 난방 운전하고, 상기 복수의 실내기 중 적어도 하나 이상이 난방운전인가 판단하고, 적어도 하나 이상이 난방운전이면 난방운전중인 실외열교환기의 온도를 감지하고, 감지된 실외열교환기의 온도를 미리 정해진 제상운전온도와 비교하여 상기 실외열교환기 온도가 제상운전온도범위이면 상기 복수 실내기의 운전모드에 따라 제상운전을 제어하되; 상기 복수 실내기의 운전모드가 2실 난방운전일 경우, 1실이라도 제상제어조건이 되면 2실 압축기와 실외팬을 정지하고 사방밸브를 냉방모드로 전환한 후 2실 압축기를 최대로 운전하여 제상운전을 수행하고, 2실 중 1실이 먼저 제상제어가 끝나도 나머지 1실이 제상제어가 끝날 때까지 대기하는 것을 특징으로 한다.In addition, the present invention provides a control method of a multi-type air conditioner having a plurality of compressors to form a plurality of independent refrigeration cycles, wherein the plurality of indoor units connected to the plurality of compressors are cooled or heated in accordance with a selected operation mode. It is determined whether at least one of the plurality of indoor units is a heating operation, and when at least one of the indoor units is a heating operation, the temperature of the outdoor heat exchanger in the heating operation is sensed, and the detected temperature of the outdoor heat exchanger is compared with a predetermined defrosting operation temperature. If the outdoor heat exchanger temperature is a defrosting operation temperature range, the defrosting operation is controlled according to the operation mode of the plurality of indoor units; When the operation mode of the plurality of indoor units is two-room heating operation, if the defrost control condition is satisfied even in one room, the two-room compressor and the outdoor fan are stopped, the four-way valve is switched to the cooling mode, and the two-room compressor is operated at the maximum defrosting operation. And one of the two rooms waits until the defrost control is finished even if the first defrosting control is completed.

또한, 본 발명은 복수의 압축기를 가지고 복수의 독립된 냉동싸이클을 형성하는 멀티형 공기조화기의 제어방법에 있어서, 상기 복수의 압축기에 연결된 복수의 실내기를 선택된 운전모드에 따라 냉방 또는 난방 운전하고, 상기 복수의 실내기 중 적어도 하나 이상이 난방운전인가 판단하고, 적어도 하나 이상이 난방운전이면 난방운전중인 실외열교환기의 온도를 감지하고, 감지된 실외열교환기의 온도를 미리 정해진 제상운전온도와 비교하여 상기 실외열교환기 온도가 제상운전온도범위이면 상기 복수 실내기의 운전모드에 따라 제상운전을 제어하되; 상기 복수 실내기의 운전모드가 냉난방 혼용운전일 경우, 난방측이 제상제어조건이 되면 냉난방측 2실 압축기와 실외팬을 정지하고 사방밸브를 냉방모드로 전환한 후, 난방측 압축기를 최대로 운전하여 제상운전을 수행하고, 냉방측 압축기는 난방측의 제상제어가 끝날 때까지 정지상태로 대기하는 것을 특징으로 한다.In addition, the present invention provides a control method of a multi-type air conditioner having a plurality of compressors to form a plurality of independent refrigeration cycles, wherein the plurality of indoor units connected to the plurality of compressors are cooled or heated in accordance with a selected operation mode. It is determined whether at least one of the plurality of indoor units is a heating operation, and when at least one of the indoor units is a heating operation, the temperature of the outdoor heat exchanger in the heating operation is sensed, and the detected temperature of the outdoor heat exchanger is compared with a predetermined defrosting operation temperature. If the outdoor heat exchanger temperature is a defrosting operation temperature range, the defrosting operation is controlled according to the operation mode of the plurality of indoor units; When the operation mode of the plurality of indoor units is a mixed heating and cooling operation, when the heating side becomes the defrost control condition, the two-chamber compressor and the outdoor fan are stopped, the four-way valve is switched to the cooling mode, and the heating-side compressor is operated to the maximum. The defrosting operation is performed, and the cooling side compressor waits in a stopped state until the defrosting control on the heating side is completed.

이하, 본 발명의 일실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 의한 멀티형 공기조화기의 냉매유로도이다.1 is a refrigerant flow diagram of a multi-type air conditioner according to the present invention.

도 1에서, 본 발명의 멀티형 공기조화기는 독립된 냉동싸이클을 형성하는 하나의 실외기(10)와, 상기 실외기(10)에 연결되어 실내 냉난방을 행하는 복수의 실내기(30,40)를 구비하며, 상기 복수의 실내기(30,40)와 실외기(10) 사이에는 냉매배관이 설치된다.In FIG. 1, the multi-type air conditioner of the present invention includes one outdoor unit 10 forming an independent refrigeration cycle, and a plurality of indoor units 30 and 40 connected to the outdoor unit 10 to perform indoor cooling and heating. A refrigerant pipe is installed between the plurality of indoor units 30 and 40 and the outdoor unit 10.

상기 실외기(10)는 냉매를 고온고압의 기체상태로 압축하는 복수(예를 들어, 2개)의 제1 및 제2압축기(12a,12b)와, 상기 제1 및 제2압축기(12a,12b)에서 압축된 고온고압 기체냉매의 흐름방향을 운전모드(냉방 또는 난방)에 따라 조절하는 제1 및 제2사방밸브(14a,14b)와, 상기 제1 및 제2압축기(12a,12b)에서 압축된 고온고압의 기체냉매를 전달받아 실외공기와 열교환하는 제1 및 제2실외열교환기(16a,16b)와, 냉매 유량을 조절하면서 열교환된 냉매를 감압 팽창시키는 제1 및 제2전동변(22a,22b)을 포함한다.The outdoor unit 10 includes a plurality of (eg, two) first and second compressors 12a and 12b for compressing a refrigerant into a gaseous state of high temperature and high pressure, and the first and second compressors 12a and 12b. In the first and second four-way valve (14a, 14b) and the first and second compressors (12a, 12b) for adjusting the flow direction of the high-temperature high-pressure gas refrigerant compressed by the operating mode (cooling or heating) First and second outdoor heat exchangers 16a and 16b that receive a compressed high-temperature, high-pressure gas refrigerant and exchange heat with outdoor air, and first and second electric valves that decompress and expand the heat-exchanged refrigerant while controlling the refrigerant flow rate. 22a, 22b).

상기 제1 및 제2실외열교환기(16a,16b)의 일측에는 제1 및 제2실외열교환기(16a,16b)에서 열교환이 이루어지도록 실외팬모터(20)에 의해 실외공기를 강제 송풍시키는 하나의 실외팬(18)이 설치되고, 상기 제1 및 제2압축기(12a,12b)의 흡입측에는 제1 및 제2압축기(12a,12b)에 유입되는 냉매를 완전 기체상태의 가스로 변 환시키는 제1 및 제2어큐뮬레이터(24a,24b)가 설치된다.One side of the first and second outdoor heat exchangers (16a, 16b) for forced air blowing by the outdoor fan motor 20 to the heat exchange in the first and second outdoor heat exchangers (16a, 16b) The outdoor fan 18 is installed, and the refrigerant flowing into the first and second compressors 12a and 12b on the suction side of the first and second compressors 12a and 12b is converted into gas in a completely gaseous state. First and second accumulators 24a and 24b are provided.

또한, 상기 제1 및 제2실외열교환기(16a,16b)에는 제1 및 제2실내열교환기(16a,16b)의 배관온도를 감지하는 제1 및 제2실외배관온도센서(26a,26b)가 설치되는데, 이 제1 및 제2실외배관온도센서(26a,26b)는 제1 및 제2실외열교환기(16a,16b)의 배관뿐만 아니라 제1 및 제2실외열교환기(16a,16b)를 통과하는 냉매온도를 감지할 수 있는 임의의 위치에 설치될 수 있다.In addition, the first and second outdoor heat exchangers 16a and 16b include first and second outdoor pipe temperature sensors 26a and 26b for detecting pipe temperatures of the first and second indoor heat exchangers 16a and 16b. The first and second outdoor piping temperature sensors (26a, 26b) are installed as well as the first and second outdoor heat exchangers (16a, 16b) as well as the piping of the first and second outdoor heat exchangers (16a, 16b). It may be installed at any position that can sense the refrigerant temperature passing through.

상기 제1 및 제2실내기(30,40)는 냉매를 전달받아 실내공기와 열교환하는 제1 및 제2실내열교환기(32,42)와, 상기 제1 및 제2실내열교환기(32,42)에서 열교환이 이루어지도록 제1 및 제2실내팬모터(34,44)에 의해 실내공기를 강제 송풍시키는 제1 및 제2실내팬(36,46)을 포함한다.The first and second indoor heat exchangers (30, 40) are the first and second indoor heat exchangers (32, 42) for receiving heat and heat exchange with the indoor air, and the first and second indoor heat exchangers (32, 42) The first and second indoor fan (36,46) for forcibly blowing the indoor air by the first and second indoor fan motors (34, 44) to perform heat exchange in the).

이와 같이, 2개의 압축기(12a,12b)를 가지고 2개의 독립된 냉동싸이클을 형성하는 멀티형 공기조화기는 냉방 또는 난방운전이 가능하며, 1실 냉방운전, 1실 난방운전, 2실 냉방운전, 2실 난방운전, 냉난방 혼용운전의 운전모드로 운전 가능하다.As such, a multi-type air conditioner having two compressors 12a and 12b to form two independent refrigeration cycles can be cooled or heated. One-room cooling operation, one-room heating operation, two-room cooling operation and two-room It can be operated in the operation mode of heating operation and air-conditioning mixed operation.

이러한 멀티형 공기조화기에서, 난방시에는 제1 및 제2사방밸브(14a,14b)가 온되어 냉매가 도 1의 점선화살표 방향을 따라 제1압축기(12a)→제1사방밸브(14a) →제1실내열교환기(32) →제1전동변(22a) →제1실외열교환기(16a) →제1사방밸브(14a) →제1어큐뮬레이터(24a) →제1압축기(12a) 순으로 순환되는 냉동싸이클과, 제2압축기(12b)→제2사방밸브(14b) →제2실내열교환기(42) →제2전동변(22b) →제2실외열교환기(16b) →제2사방밸브(14b) →제2어큐뮬레이터(24b) →제2압축기(12b) 순으로 순환되는 냉동싸이클을 형성한다.In such a multi-type air conditioner, when heated, the first and second four-way valves 14a and 14b are turned on so that the refrigerant flows from the first compressor 12a to the first four-way valve 14a in the dotted arrow direction of FIG. 1. The first indoor heat exchanger (32) → the first electric motor (22a) → the first outdoor heat exchanger (16a) → the first four-way valve (14a) → the first accumulator (24a) → the first compressor (12a) Refrigeration cycle and the second compressor (12b) → the second four-way valve (14b) → the second indoor heat exchanger (42) → the second motor (22b) → the second outdoor heat exchanger (16b) → the second four-way valve A freezing cycle circulated in the order of (14b)-> second accumulator 24b-> second compressor 12b.

반면, 냉방시에는 제1 및 제2사방밸브(14a,14b)가 오프되어 냉매가 도 1의 실선화살표 방향을 따라 제1압축기(12a) →제1사방밸브(14a) →제1실외열교환기(16a) →제1전동변(22a) →제1실내열교환기(32) →제1사방밸브(14a) →제1어큐뮬레이터(24a) →제1압축기(12a) 순으로 순환되는 냉동싸이클과, 제2압축기(12b) →제2사방밸브(14b) →제2실외열교환기(16b) →제2전동변(22b) →제2실내열교환기(42) →제2사방밸브(14b) →제2어큐뮬레이터(24b) →제2압축기(12b) 순으로 순환되는 냉동싸이클을 형성한다.On the other hand, during cooling, the first and second four-way valves 14a and 14b are turned off so that the refrigerant flows along the solid arrow direction of FIG. 1 from the first compressor 12a to the first four-way valve 14a to the first outdoor heat exchanger. (16a) the first electric motor 22a → the first indoor heat exchanger 32 → the first four-way valve 14a → the first accumulator 24a → the first compressor 12a, and Second compressor (12b) → Second four-way valve (14b) → Second outdoor heat exchanger (16b) → Second electric heat exchanger (22b) → Second indoor heat exchanger (42) → Second four-way valve (14b) → First It forms a refrigeration cycle circulated in the order of 2 accumulator (24b) → second compressor (12b).

도 2는 본 발명의 일실시예에 의한 멀티형 공기조화기의 제상제어 구성도로서, 신호입력부(100), 실내온도감지부(110), 제1배관온도감지부(120), 제2배관온도감지부(130), 운전전류감지부(140), 제어부(150), 압축기구동부(160), 실외팬모터구동부(170), 실내팬모터구동부(180) 및 밸브구동부(190)를 포함하여 구성된다.Figure 2 is a defrost control configuration diagram of a multi-type air conditioner according to an embodiment of the present invention, the signal input unit 100, the room temperature detection unit 110, the first piping temperature detection unit 120, the second piping temperature Comprising the sensing unit 130, the driving current detection unit 140, the controller 150, the compressor driver 160, the outdoor fan motor driver 170, the indoor fan motor driver 180 and the valve driver 190 do.

상기 신호입력부(100)는 사용자가 선택하는 운전모드(1실 냉방, 1실 난방, 2실 냉방, 2실 난방 또는 냉난방 혼용운전)와 설정온도 등의 운전정보를 입력하고, 실내온도감지부(110)는 제1 또는 제2실내기(30,40)로 흡입되는 실내공기온도를 감지한다.The signal input unit 100 inputs operation information such as an operation mode selected by a user (1 room cooling, 1 room heating, 2 room cooling, 2 room heating or air-conditioning mixed operation) and a set temperature, and the indoor temperature detection unit ( 110 detects the indoor air temperature sucked into the first or second indoor (30, 40).

상기 제1배관온도감지부(120)는 제1실외열교환기(16a)의 온도를 감지하는 제1실외배관온도센서(26a) 등으로 구성되고, 제2배관온도감지부(130)는 제2실외열교환기(16b)의 온도를 감지하는 제2실외배관온도센서(26b) 등으로 구성되며, 운전전류감지부(140)는 제1 및 제2압축기(12a,12b)에 인가되는 운전전류를 감지한다.The first pipe temperature detection unit 120 is composed of a first outdoor pipe temperature sensor 26a and the like for sensing the temperature of the first outdoor heat exchanger (16a), the second pipe temperature detection unit 130 is a second And a second outdoor piping temperature sensor 26b for sensing the temperature of the outdoor heat exchanger 16b, and the driving current detecting unit 140 supplies the operating currents applied to the first and second compressors 12a and 12b. Detect.

상기 제어부(150)는 제1 또는 제2실외열교환기(16a,16b)의 온도가 미리 정해진 일정온도 이하에서 소정시간이 경과되고 제1 또는 제2압축기(12a,12b)의 운전전류가 일정전류 이하가 되어 제상운전조건을 모두 만족하면 운전상태(1실 난방, 2실 난방 또는 냉난방 혼용운전)에 따라 제상운전을 제어하는 것으로, 실내기(30,40) 마이컴 또는 실외기(10) 마이컴을 포함한다.The controller 150 has a predetermined time elapsed when the temperature of the first or second outdoor heat exchangers 16a and 16b is less than or equal to a predetermined temperature and the operating current of the first or second compressors 12a and 12b is a constant current. When the defrosting operation condition is satisfied as described below, the defrosting operation is controlled according to an operating state (one-room heating, two-room heating or a combined heating and cooling operation), and includes indoor units 30 and 40 microcomputers or outdoor unit 10 microcomputers. .

상기 압축기구동부(160)는 제어부(150)의 압축기제어신호에 따라 제1 및 제2압축기(12a,12b)의 구동을 제어하고, 실외팬모터구동부(170)는 제어부(150)의 실외팬제어신호에 따라 실외팬모터(20)의 구동을 제어한다.The compressor driver 160 controls the driving of the first and second compressors 12a and 12b according to the compressor control signal of the controller 150, and the outdoor fan motor driver 170 controls the outdoor fan of the controller 150. The driving of the outdoor fan motor 20 is controlled according to the signal.

상기 실내팬모터구동부(180)는 제어부(150)의 실내팬제어신호에 따라 실내팬모터(34,44)의 구동을 제어하고, 밸브구동부(190)는 제어부(150)의 밸브제어신호에 따라 제1 및 제2사방밸브(14a,14b), 제1 및 제2전동변(22a,22b)의 구동을 제어한다.The indoor fan motor driver 180 controls the driving of the indoor fan motors 34 and 44 according to the indoor fan control signal of the controller 150, and the valve driver 190 according to the valve control signal of the controller 150. The driving of the first and second four-way valves 14a and 14b and the first and second motor-side valves 22a and 22b is controlled.

이하, 상기와 같이 구성된 멀티형 공기조화기의 제상제어방법의 동작과정 및 작용효과를 설명한다.Hereinafter, an operation process and an operation effect of the defrost control method of the multi-type air conditioner configured as described above will be described.

도 3은 본 발명에 의한 멀티형 공기조화기의 제상제어방법의 동작 흐름도로서, 1실 난방운전, 2실 난방운전, 냉난방 혼용운전 시 제상제어를 위한 것이다.3 is an operation flowchart of a defrost control method of a multi-type air conditioner according to the present invention, which is for defrost control in a single room heating operation, a two-room heating operation, and a combined heating and cooling operation.

먼저, 사용자가 선택하는 운전모드(1실 냉방, 1실 난방, 2실 냉방, 2실 난방, 냉난방 혼용운전)와 설정온도 등의 운전정보를 신호입력부(100)를 통해 제어부(150)에 입력한다.First, operation information such as operation mode selected by the user (1 room cooling, 1 room heating, 2 room cooling, 2 room heating, air-conditioning mixed operation) and setting temperature is input to the controller 150 through the signal input unit 100. do.

상기 제어부(150)는 선택된 운전모드에 따라 밸브구동부(190)를 제어해서 제 1 또는 제2사방밸브(14a,14b)가 냉방 또는 난방싸이클로 전환되도록 제어하고, 압축기구동부(160)를 제어해서 제1 또는 제2압축기(12a,12b)를 구동시킨다.The controller 150 controls the valve driver 190 according to the selected operation mode to control the first or second four-way valves 14a and 14b to be switched to a cooling or heating cycle, and controls the compressor driver 160 to control the valve driver 190. The first or second compressors 12a and 12b are driven.

따라서, 제어부(150)는 현재의 운전모드를 확인하여 A실 또는 B실 중 어느 하나라도 난방운전인가를 판단하고(S100), 어느 하나라도 난방운전이 아니면(NO) 현재의 운전제어(냉방운전)를 유지하면서 리턴한다(S110).Therefore, the controller 150 checks the current operation mode to determine whether any one of Room A or Room B is heating operation (S100), and if any one is not heating operation (NO), the current operation control (cooling operation). Return while maintaining (S110).

어느 하나라도 난방운전이면(YES) 1실 운전인가를 판단하여(S200), 1실 운전이면(YES) 난방운전이 수행되는 동안 해당 실외열교환기(16a 또는 16b)의 온도를 감지하여 제상제어 진입조건인가를 판단하고(S210), 제상제어 진입조건이 아니면(NO) 현재의 운전제어(1실 난방운전)를 유지하면서 리턴한다(S600).If any of the heating operation (YES) is determined to be a single room operation (S200), if the one room operation (YES) while the heating operation is performed by sensing the temperature of the outdoor heat exchanger (16a or 16b) to enter the defrost control If it is a condition (S210), and if it is not the defrost control entry condition (NO), it returns while maintaining the current operation control (1 room heating operation) (S600).

제상제어 진입조건이면(YES), 해당 압축기(12a 또는 12b)와 실외팬(18)을 정지시키고 해당 사방밸브(14a 또는 14b)를 냉방모드로 전환시킨 후, 해당 압축기(12a 또는 12b)를 최대로 운전하여 해당 실외열교환기(16a 또는 16b)의 착상을 제거하는 1실 제상제어운전을 수행한다(S220).If the defrost control entry condition (YES), the compressor 12a or 12b and the outdoor fan 18 are stopped, the four-way valve 14a or 14b is switched to the cooling mode, and the compressor 12a or 12b is turned up. In operation S220, a single room defrosting control operation is performed to remove the idea of the outdoor heat exchanger 16a or 16b.

1실 제상제어운전 후, 해당 실외열교환기(16a 또는 16b)의 온도가 상승하여 제상제어 이탈조건인가를 판단하고(S230), 제상제어 이탈조건이면 해당 압축기(12a 또는 12b)와 실외팬(18)을 제상제어 이전의 운전모드로 복귀한다(S500).After the one-room defrost control operation, the temperature of the outdoor heat exchanger 16a or 16b rises to determine whether the defrost control is a departure condition (S230). If the defrost control is a departure condition, the compressor 12a or 12b and the outdoor fan 18 are defrosted. ) Is returned to the operation mode before the defrost control (S500).

상기 단계S200에서 1실 운전이 아니면(NO) 냉난방 혼용운전인가를 판단하여(S300), 냉난방 혼용운전이면(YES) 난방측이 제상제어 진입조건인가를 판단한다(S310).In step S200, if it is not a single room operation (NO), it is determined whether it is a mixed heating and heating operation (S300), and if it is a mixed heating and cooling operation (YES), it is determined whether the heating side is a defrost control entry condition (S310).

제상제어 진입조건이 아니면(NO) 현재의 운전제어(냉난방 혼용운전)를 유지 하면서 리턴한다(S600).If the defrost control entry condition (NO) is returned while maintaining the current operation control (mixed air-conditioning operation) (S600).

난방측이 제상제어 진입조건이면(YES), 2실 모두 압축기(12a,12b)와 실외팬(18)을 정지시키고 난방측 사방밸브(14a 또는 14b)를 냉방으로 전환시킨 후, 난방측 압축기(12a 또는 12b)를 최대로 운전하여 난방측 실외열교환기(16a 또는 16b)의 착상을 제거하는 난방측 제상제어운전을 수행하고, 이때 냉방측은 제상제어가 끝날 때까지 압축기(12b 또는 12a)를 정지시켜 대기한다(S320).If the heating side is a defrost control entry condition (YES), the two chambers stop the compressors 12a and 12b and the outdoor fan 18, and the heating four-way valve 14a or 14b is switched to cooling, and then the heating side compressor ( 12a or 12b) is operated to the maximum to perform the heating-side defrost control operation to remove the frosting of the heating-side outdoor heat exchanger (16a or 16b), wherein the cooling side stops the compressor (12b or 12a) until the defrost control is finished. To wait (S320).

난방측 제상제어운전 후, 난방측 실외열교환기(16a 또는 16b)의 온도가 상승하여 난방측이 제상제어 이탈조건인가를 판단하고(S330), 난방측이 제상제어 이탈조건이면 2실 압축기(12a,12b)와 실외팬(18)을 제상제어 이전의 운전모드로 복귀한다(S600).After the heating-side defrost control operation, the temperature of the heating-side outdoor heat exchanger 16a or 16b rises to determine whether the heating side is a defrost control departure condition (S330), and if the heating side is a defrost control departure condition, the two-room compressor 12a. 12b) and the outdoor fan 18 are returned to the operation mode before the defrost control (S600).

상기 단계S300에서 냉난방 혼용운전 아니면(NO) 2실 난방운전이므로 2실 중 1실이라도 제상제어 진입조건인가를 판단하고(S400), 제상제어 진입조건이 아니면(NO) 현재의 운전제어(2실 난방운전)를 유지하면서 리턴한다(S500).In the step S300, the mixed air-conditioning operation (NO) or two-room heating operation, it is determined whether even one of the two room defrost control entry conditions (S400), if the defrost control entry conditions (NO) the current operation control (2 rooms Return while maintaining the heating operation (S500).

2실 중 1실이라도 제상제어 진입조건이면(YES), 2실 모두 압축기(12a,12b)와 실외팬(18)을 정지시키고 2실 모두 사방밸브(14a,14b)를 냉방으로 전환시킨 후, 2실 압축기(12a,12b)를 최대로 운전하여 2실 실외열교환기(16a,16b)의 착상을 제거하는 2실 모두의 제상제어운전을 수행한다(S410).If at least one of the two chambers is in the defrost control entry condition (YES), both of the two chambers stop the compressors 12a and 12b and the outdoor fan 18, and the two chambers switch the four-way valves 14a and 14b to cooling, The two chamber compressors 12a and 12b are operated to the maximum to perform defrost control operation of both chambers to remove the frost of the two outdoor heat exchangers 16a and 16b (S410).

2실 모두 제상제어운전 후, 실외열교환기(16a,16b)의 온도가 상승하여 2실 모두 제상제어 이탈조건인가를 판단하고(S420), 2실 모두 제상제어 이탈조건이 아니면(NO) 제상이 끝나지 않은 쪽은 계속해서 제상제어운전을 수행하고, 제상이 끝 난 쪽은 나머지 1실이 제상제어 이탈조건을 만족할 때까지 대기한다(S430).After the defrost control operation in both chambers, the temperature of the outdoor heat exchangers 16a and 16b rises to determine whether the two chambers are out of the defrost control condition (S420), and if the two chambers are not in the defrost control departure condition (NO) The unfinished side continues to perform defrost control operation, and the end of defrosting waits until the remaining one meets the defrost control departure condition (S430).

2실 모두 제상제어 이탈조건이면(YES) 2실 압축기(12a,12b)와 실외팬(18)을 제상제어 이전의 운전모드로 복귀한다(S500).If both chambers are out of the defrost control condition (YES), the two chamber compressors 12a and 12b and the outdoor fan 18 are returned to the operation mode before the defrosting control (S500).

도 4는 본 발명에 의한 멀티형 공기조화기의 난방측 제상제어방법의 동작 흐름도로서, 난방운전중의 제상제어를 위한 것이다.4 is an operation flowchart of a heating-side defrost control method of a multi-type air conditioner according to the present invention for defrost control during heating operation.

도 4에서, 난방운전이 수행되는 동안 실외열교환기(16a,16b)의 온도를 감지하여 실외열교환기(16a,16b) 온도가 제상운전 온도범위인 일정온도 이하에서 소정시간 경과되고, 압축기(12a,12b)의 운전전류가 소정치 이하가 되어 제상운전조건을 모두 만족하는 제상제어 진입조건인가를 판단한다(S1000~S1100).In FIG. 4, the temperature of the outdoor heat exchangers 16a and 16b is sensed while the heating operation is performed, and a predetermined time has elapsed at a temperature below the predetermined temperature which is the defrosting operation temperature range. In operation S1000 to S1100, it is determined whether the operation current of (12b) is less than or equal to the predetermined value and satisfies all the defrosting operation conditions.

제상제어 진입조건이 아니면(NO) 현재의 운전제어(1실 난방, 2실 난방 또는 냉난방 혼용운전)를 유지하면서 리턴한다(S1200).If the defrost control entry condition (NO) is returned while maintaining the current operation control (1 room heating, 2 room heating or air-conditioning mixed operation) (S1200).

제상제어 진입조건이면(YES) 압축기(12a,12b), 실외팬(18), 실내팬(36,46)을 모두 정지하면서 전동변(22a,22b)의 개도를 최대로 제어하고 사방밸브(14a,14b)를 냉방모드로 전환시킨 후(S1300), 압축기(12a,12b)를 최대로 운전하여 실외열교환기(16a,16b)의 착상을 제거하는 제상제어운전을 수행한다(S1400).If the defrost control entry condition (YES), the compressor 12a, 12b, the outdoor fan 18, and the indoor fan 36, 46 are all stopped and the opening degree of the electric valves 22a, 22b is controlled to the maximum and the four-way valve 14a is stopped. After switching to and in the cooling mode (S1300), the compressors 12a and 12b are operated to the maximum to perform the defrosting control operation to remove the idea of the outdoor heat exchangers 16a and 16b (S1400).

제상제어운전을 수행하여 실외열교환기(16a,16b)의 온도가 일정온도 이상으로 상승하거나 압축기(12a,12b)의 운전전류가 정상전류로 상승되어 제상운전종료조건을 모두 만족하는 제상제어 이탈조건인가를 판단한다(S1500).Defrost control departure condition that performs the defrost control operation and the temperature of the outdoor heat exchangers 16a and 16b rises above a certain temperature or the operating current of the compressors 12a and 12b rises to the normal current to satisfy all the defrosting termination conditions. The authorization is determined (S1500).

제상제어 이탈조건이면(YES) 압축기(12a,12b)를 일시 정지하고 전동변(22a,22b)의 개도를 제상제어 이전으로 제어하고 사방밸브(14a,14b)를 난방모드로 전환시킨 후(S1600~S1700), 압축기(12a,12b)와 실외팬(18), 실내팬(36,46)을 제상제어 이전의 운전으로 복귀시켜 정상운전을 수행한다(S1800).If the defrost control is out of condition (YES), the compressors 12a and 12b are paused, the openings of the electric valves 22a and 22b are controlled before the defrosting control, and the four-way valves 14a and 14b are switched to the heating mode (S1600). S1700, the compressors 12a and 12b, the outdoor fans 18, and the indoor fans 36 and 46 are returned to the operation before the defrost control to perform normal operation (S1800).

도 5는 본 발명에 의한 멀티형 공기조화기의 냉방측 제상제어방법의 동작 흐름도로서, 냉방운전중의 제상제어를 위한 것이다.5 is an operation flowchart of a cooling side defrost control method of a multi-type air conditioner according to the present invention, and is for defrost control during a cooling operation.

도 5에서, 냉방운전이 수행되는 동안 난방측 실외열교환기(16a 또는 16b)의 온도를 감지하여 난방측이 제상제어 진입조건인가를 판단한다(S2000~S2100).In FIG. 5, while the cooling operation is performed, the temperature of the heating-side outdoor heat exchanger 16a or 16b is sensed to determine whether the heating-side is a defrost control entry condition (S2000 to S2100).

난방측이 제상제어 진입조건이면(YES) 냉방측 압축기(12a 또는 12b)를 정지하면서 난방측의 제상제어가 끝날 때까지 대기한다(S2200).If the heating side is the defrost control entry condition (YES), the cooling compressor 12a or 12b is stopped and waits until the defrosting control of the heating side is finished (S2200).

난방측이 제상제어 이탈조건인가를 판단하여(S2300), 제상제어 이탈조건이면(YES) 압축기(12a,12b)와 실외팬(18)을 제상제어 이전의 운전으로 복귀시켜 정상운전을 수행한다(S2400).It is determined whether the heating side is the defrost control departure condition (S2300), and if the defrost control departure condition (YES), the compressors 12a and 12b and the outdoor fan 18 are returned to the operation before the defrost control to perform normal operation ( S2400).

상기에서 설명한 것은 본 발명에 의한 멀티형 공기조화기의 제상제어방법을 실시하기 위한 하나의 실시예에 불과한 것으로, 본 발명은 상술한 실시예에 한정되지 않고, 본 발명의 기술적 사상 내에서 당 분야의 통상의 지식을 가진 자에 의하여 여러 가지 변형이 가능함은 물론이다.What has been described above is only one embodiment for carrying out the defrosting control method of the multi-type air conditioner according to the present invention, the present invention is not limited to the above-described embodiment, it is within the technical spirit of the present invention Various modifications are possible by those skilled in the art.

상기의 설명에서와 같이, 본 발명에 의한 멀티형 공기조화기의 제상제어방법에 의하면, 2개의 압축기를 가지고 2개의 독립된 냉동싸이클을 형성하는 멀티형 공기조화기에서 운전모드(1실 난방, 2실 난방 또는 냉난방 혼용운전)에 따라 제상운전을 다르게 제어하여 제품의 성능과 시스템의 안정성을 보장할 수 있다.As described above, according to the defrosting control method of the multi-type air conditioner according to the present invention, an operation mode (one-room heating, two-room heating) in a multi-type air conditioner having two compressors and forming two independent refrigeration cycles. Alternatively, the defrosting operation can be controlled differently according to the combined heating and cooling operation) to ensure product performance and system stability.

Claims (5)

삭제delete 삭제delete 복수의 압축기를 가지고 복수의 독립된 냉동싸이클을 형성하는 멀티형 공기조화기의 제어방법에 있어서,In the control method of a multi-type air conditioner having a plurality of compressors to form a plurality of independent refrigeration cycles, 상기 복수의 압축기에 연결된 복수의 실내기를 선택된 운전모드에 따라 냉방 또는 난방운전하고,Cooling or heating the plurality of indoor units connected to the plurality of compressors according to the selected operation mode, 상기 복수의 실내기 중 적어도 하나 이상이 난방운전인가 판단하고,Determining whether at least one of the plurality of indoor units is a heating operation, 적어도 하나 이상이 난방운전이면 난방운전중인 실외열교환기의 온도를 감지하고,If at least one heating operation, the temperature of the outdoor heat exchanger in the heating operation is detected, 감지된 실외열교환기의 온도를 미리 정해진 제상운전온도와 비교하여 상기 실외열교환기 온도가 제상운전온도범위이면 상기 복수 실내기의 운전모드에 따라 제상운전을 제어하되;Comparing the sensed temperature of the outdoor heat exchanger with a predetermined defrosting operation temperature and controlling defrosting operation according to an operation mode of the plurality of indoor units if the outdoor heat exchanger temperature is within a defrosting operation temperature range; 상기 복수 실내기의 운전모드가 1실 난방운전일 경우, 해당 압축기와 실외팬을 정지하고 사방밸브를 냉방모드로 전환한 후 해당 압축기를 최대로 운전하여 제상운전을 수행하는 것을 특징으로 하는 멀티형 공기조화기의 제상제어방법.When the operation mode of the plurality of indoor units is a one-room heating operation, the compressor and the outdoor fan are stopped, the four-way valve is switched to the cooling mode, and the compressor is operated at the maximum to perform the defrosting operation. Defrost control method. 복수의 압축기를 가지고 복수의 독립된 냉동싸이클을 형성하는 멀티형 공기조화기의 제어방법에 있어서,In the control method of a multi-type air conditioner having a plurality of compressors to form a plurality of independent refrigeration cycles, 상기 복수의 압축기에 연결된 복수의 실내기를 선택된 운전모드에 따라 냉방 또는 난방운전하고,Cooling or heating the plurality of indoor units connected to the plurality of compressors according to the selected operation mode, 상기 복수의 실내기 중 적어도 하나 이상이 난방운전인가 판단하고,Determining whether at least one of the plurality of indoor units is a heating operation, 적어도 하나 이상이 난방운전이면 난방운전중인 실외열교환기의 온도를 감지하고,If at least one heating operation, the temperature of the outdoor heat exchanger in the heating operation is detected, 감지된 실외열교환기의 온도를 미리 정해진 제상운전온도와 비교하여 상기 실외열교환기 온도가 제상운전온도범위이면 상기 복수 실내기의 운전모드에 따라 제상운전을 제어하되;Comparing the sensed temperature of the outdoor heat exchanger with a predetermined defrosting operation temperature and controlling defrosting operation according to an operation mode of the plurality of indoor units if the outdoor heat exchanger temperature is within a defrosting operation temperature range; 상기 복수 실내기의 운전모드가 2실 난방운전일 경우, 1실이라도 제상제어조건이 되면 2실 압축기와 실외팬을 정지하고 사방밸브를 냉방모드로 전환한 후 2실 압축기를 최대로 운전하여 제상운전을 수행하고, 2실 중 1실이 먼저 제상제어가 끝나도 나머지 1실이 제상제어가 끝날 때까지 대기하는 것을 특징으로 하는 멀티형 공기조화기의 제상제어방법.When the operation mode of the plurality of indoor units is two-room heating operation, if the defrost control condition is satisfied even in one room, the two-room compressor and the outdoor fan are stopped, the four-way valve is switched to the cooling mode, and the two-room compressor is operated at the maximum defrosting operation. And defrosting control method of a multi-type air conditioner, characterized in that one of the two chambers waits until the end of the defrosting control even if one of the first end of the defrosting control. 복수의 압축기를 가지고 복수의 독립된 냉동싸이클을 형성하는 멀티형 공기조화기의 제어방법에 있어서,In the control method of a multi-type air conditioner having a plurality of compressors to form a plurality of independent refrigeration cycles, 상기 복수의 압축기에 연결된 복수의 실내기를 선택된 운전모드에 따라 냉방 또는 난방운전하고,Cooling or heating the plurality of indoor units connected to the plurality of compressors according to the selected operation mode, 상기 복수의 실내기 중 적어도 하나 이상이 난방운전인가 판단하고,Determining whether at least one of the plurality of indoor units is a heating operation, 적어도 하나 이상이 난방운전이면 난방운전중인 실외열교환기의 온도를 감지하고,If at least one heating operation, the temperature of the outdoor heat exchanger in the heating operation is detected, 감지된 실외열교환기의 온도를 미리 정해진 제상운전온도와 비교하여 상기 실외열교환기 온도가 제상운전온도범위이면 상기 복수 실내기의 운전모드에 따라 제상운전을 제어하되;Comparing the sensed temperature of the outdoor heat exchanger with a predetermined defrosting operation temperature and controlling defrosting operation according to an operation mode of the plurality of indoor units if the outdoor heat exchanger temperature is within a defrosting operation temperature range; 상기 복수 실내기의 운전모드가 냉난방 혼용운전일 경우, 난방측이 제상제어조건이 되면 냉난방측 2실 압축기와 실외팬을 정지하고 사방밸브를 냉방모드로 전환한 후, 난방측 압축기를 최대로 운전하여 제상운전을 수행하고, 냉방측 압축기는 난방측의 제상제어가 끝날 때까지 정지상태로 대기하는 것을 특징으로 하는 멀티형 공기조화기의 제상제어방법.When the operation mode of the plurality of indoor units is a mixed heating and cooling operation, when the heating side becomes the defrost control condition, the two-chamber compressor and the outdoor fan are stopped, the four-way valve is switched to the cooling mode, and the heating-side compressor is operated to the maximum. A defrosting control method for a multi-type air conditioner, wherein the defrosting operation is performed and the cooling compressor waits in a stopped state until the defrosting control on the heating side is completed.
KR1020040096447A 2004-11-23 2004-11-23 Method for control defrosting of multi type air conditioner KR100626424B1 (en)

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