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KR101003356B1 - Air conditioner and control method - Google Patents

Air conditioner and control method Download PDF

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Publication number
KR101003356B1
KR101003356B1 KR20030073328A KR20030073328A KR101003356B1 KR 101003356 B1 KR101003356 B1 KR 101003356B1 KR 20030073328 A KR20030073328 A KR 20030073328A KR 20030073328 A KR20030073328 A KR 20030073328A KR 101003356 B1 KR101003356 B1 KR 101003356B1
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Prior art keywords
outdoor
compressor
indoor
indoor unit
unit
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KR20030073328A
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KR20050038115A (en
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김우현
정규하
정현석
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삼성전자주식회사
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Priority to KR20030073328A priority Critical patent/KR101003356B1/en
Priority to CNB2004100022859A priority patent/CN1324272C/en
Priority to EP20040250231 priority patent/EP1526341B1/en
Priority to DE200460001501 priority patent/DE602004001501T2/en
Priority to JP2004016196A priority patent/JP3857274B2/en
Publication of KR20050038115A publication Critical patent/KR20050038115A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F24F3/065Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00Details or features not otherwise provided for
    • F24F2221/54Heating and cooling, simultaneously or alternatively
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/007Compression machines, plants or systems with reversible cycle not otherwise provided for three pipes connecting the outdoor side to the indoor side with multiple indoor units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0231Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/029Control issues
    • F25B2313/0294Control issues related to the outdoor fan, e.g. controlling speed
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07Details of compressors or related parts
    • F25B2400/075Details of compressors or related parts with parallel compressors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/02Compressor control
    • F25B2600/027Compressor control by controlling pressure
    • F25B2600/0271Compressor control by controlling pressure the discharge pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2501Bypass valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2513Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2519On-off valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/17Speeds
    • F25B2700/172Speeds of the condenser fan
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19Pressures
    • F25B2700/193Pressures of the compressor
    • F25B2700/1931Discharge pressures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21Temperatures
    • F25B2700/2104Temperatures of an indoor room or compartment
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21Temperatures
    • F25B2700/2106Temperatures of fresh outdoor air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21Temperatures
    • F25B2700/2115Temperatures of a compressor or the drive means therefor
    • F25B2700/21152Temperatures of a compressor or the drive means therefor at the discharge side of the compressor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

본 발명은 실외 유니트에 복수 실내 유니트를 연결한 멀티 공기 조화기에서 실외 유니트를 제어하는 실외 제어부를 포함한다. 상기 실외 제어부 각 실내제어부로부터 제공받은 실내 유니트의 운전부하에 대한 정보를 이용하여 실외측 전동팽창밸브의 개도를 제어하여 난방 운전의 실내 유니트와 냉방 운전의 실내 유니트에 보내지는 냉매를 적절하게 조절한다. 또 실외 제어부는 실외 온도에 따라 압축기의 압축능력을 설정하고, 실외팬를 제어하여 압축기의 토출압력을 제어한다.

Figure R1020030073328

The present invention includes an outdoor control unit for controlling the outdoor unit in a multi air conditioner in which a plurality of indoor units are connected to the outdoor unit. By controlling the opening degree of the outdoor electric expansion valve by using the information on the operating load of the indoor unit provided from each indoor control unit of the outdoor control unit to adjust the refrigerant sent to the indoor unit of the heating operation and the indoor unit of the cooling operation appropriately. . In addition, the outdoor control unit sets the compression capacity of the compressor according to the outdoor temperature, and controls the discharge pressure of the compressor by controlling the outdoor fan.

Figure R1020030073328

Description

공기 조화기 및 그 제어방법{Air Conditioner And Control Method Thereof}Air Conditioner And Control Method Thereof

도 1은 본 발명에 따른 공기 조화기의 구성을 나타낸 냉매 회로도이다.1 is a refrigerant circuit diagram showing the configuration of an air conditioner according to the present invention.

도 2는 본 발명에 따른 공기 조화기가 냉방 주체 냉난방 운전을 동시에 수행하는 경우의 냉매 흐름을 나타낸 도면이다.2 is a view showing a refrigerant flow when the air conditioner according to the present invention performs the cooling main air conditioning operation at the same time.

도 3은 본 발명에 따른 공기 조화기에서 총 난방 부하가 총 냉방 부하 보다 큰 경우 실외 전동팽창밸브의 개도에 따라 변화하는 운전 성능을 나타낸 그래프이다.3 is a graph showing a driving performance that varies depending on the opening degree of the outdoor electric expansion valve when the total heating load is greater than the total cooling load in the air conditioner according to the present invention.

도 4는 본 발명에 따른 공기 조화기에서 총 난방 부하가 총 냉방 부하 보다 크지 않은 경우 실외 전동팽창밸브의 개도에 따라 변화하는 운전 성능을 나타낸 그래프이다.Figure 4 is a graph showing the operating performance changes according to the opening degree of the outdoor electric expansion valve when the total heating load is not greater than the total cooling load in the air conditioner according to the present invention.

도 5a 및 도 5b는 본 발명에 따른 공기 조화기의 제어방법의 흐름도이다.5A and 5B are flowcharts of a control method of the air conditioner according to the present invention.

*도면의 주요 기능에 대한 부호의 설명*[Description of the Reference Numerals]

100 : 실외 유니트 100: outdoor unit

120 : 실외 제어부120: outdoor control

200a, 200b, 200c, 2000d : 실내 유니트200a, 200b, 200c, 2000d: Indoor unit

300 : 냉매전환회로300: refrigerant switching circuit

본 발명은 실외 유니트에 복수의 실내 유니트를 연결하고 그 실내 유니트에서 난방 운전과 냉방 운전을 동시에 수행할 수 있도록 한 공기 조화기 및 그 제어방법에 관한 것이다.The present invention relates to an air conditioner and a method of controlling the same, wherein a plurality of indoor units are connected to an outdoor unit and the heating and cooling operations can be simultaneously performed in the indoor unit.

종래 멀티 공기 조화기는 보통 하나의 실외 유니트에 복수 실내 유니트를 연결하여 실내 공간에 대한 공조 운전을 수행한다. 실외 유니트에는 압축기와 실외 열교환기 그리고 실외 전동팽창밸브를 구비하며, 실내 유니트에는 실내 열교환기와 실내 전동팽창밸브를 구비한다.Conventional multi-air conditioners typically perform air conditioning operation on an indoor space by connecting a plurality of indoor units to one outdoor unit. The outdoor unit is equipped with a compressor, an outdoor heat exchanger and an outdoor electric expansion valve, and the indoor unit is provided with an indoor heat exchanger and an indoor electric expansion valve.

실내 유니트가 설치되는 실내 공간의 거주자는 희망하는 공기 조화의 조건을 제 각각으로 설정하는 경우가 일반적이다.Residents of indoor spaces in which indoor units are installed typically set desired air conditioning conditions individually.

환절기 또는 실내 공간의 환경에 따라 거주자가 주위 온도에 대하여 느끼는 체감 정도가 다를 수 있기 때문에 전체 실내 유니트에 적용하는 운전 모드가 하나로 통일되지 않고 냉방과 난방을 동시에 수행하는 경우가 있다.Since the degree of sensation felt by the occupants may be different depending on the environment of the season or the indoor space, the operation mode applied to the entire indoor unit may be simultaneously performed without cooling or heating.

냉방과 난방을 동시에 수행하는 경우, 냉방 운전의 실내 유니트가 더 많은 냉방 주체 냉난방 운전과 난방 운전의 실내 유니트가 더 많은 난방 주체 냉난방 운전이 있다.When performing cooling and heating at the same time, there are more air conditioning heating and cooling units in the indoor unit of the cooling operation and more air heating units in the heating unit.

냉난방 동시 운전하는 경우 압축기의 토출 냉매는 분기하여 냉방 또는 난방 운전에 대응하는 실내 유니트에 보내지게 된다. 즉, 실외 유니트의 압축기에서 토출되는 냉매는 응축기로 작용하는 실외 열교환기 측으로 보내짐과 동시에 그 토출 냉매의 일부는 실외 열교환기를 거치지 않고 난방 운전을 요구하는 실내 유니트의 실내 열교환기 측으로 보내지게 된다.In the case of simultaneous operation of cooling and heating, the discharged refrigerant of the compressor branches and is sent to the indoor unit corresponding to the cooling or heating operation. That is, the refrigerant discharged from the compressor of the outdoor unit is sent to the outdoor heat exchanger side acting as a condenser, and a part of the discharged refrigerant is sent to the indoor heat exchanger side of the indoor unit requiring heating operation without passing through the outdoor heat exchanger.

냉방 운전 또는 난방 운전하는 실내 유니트에서의 운전 부하는 수시로 변화한다. 이 때문에 난방 운전하는 실내 유니트의 운전 대수가 냉방 운전하는 실내 유니트의 운전 대수에 비하여 상대적으로 적다고 하더라도 난방 운전하는 실내 유니트의 운전 부하가 냉방 운전하는 실내 유니트의 운전 부하보다 얼마든지 클 수 있다.The operating load in an indoor unit for cooling or heating operation changes frequently. For this reason, even if the operation number of the indoor unit for heating operation is relatively small compared to the operation number of the indoor unit for cooling operation, the operating load of the indoor unit for heating operation may be much larger than the operation load of the indoor unit for cooling operation.

그런데 종래 공기 조화기는 단순히 실내 유니트의 운전 대수에만 의존하여 토출 냉매를 제어하였기 때문에 실내 유니트의 운전 부하를 정확하게 반영하여 냉매량을 조절하기 어렵다. However, since the conventional air conditioner controls the discharge refrigerant based only on the number of operations of the indoor unit, it is difficult to accurately adjust the amount of refrigerant to accurately reflect the operating load of the indoor unit.

종래 공기 조화기는 실내 유니트의 운전 부하에 대응하여 분기하는 냉매량을 적절하게 조절하지 못하였기 때문에 냉방 운전의 실내 유니트에 냉매를 과도하게 공급하는 한편 난방 운전의 실내 유니트에 공급되는 냉매는 부족할 수 있으므로 난방 운전하는 실내 유니트의 난방 성능 및 냉방 운전하는 실내 유니트의 냉방 성능 모두가 저하된다.Since the conventional air conditioner has not properly adjusted the amount of refrigerant branching in response to the operating load of the indoor unit, the refrigerant supplied to the indoor unit of the heating operation may be insufficient while the refrigerant supplied to the indoor unit of the heating operation may be insufficient. Both the heating performance of the indoor unit to operate and the cooling performance of the indoor unit to operate are deteriorated.

본 발명의 목적은 냉난방 동시 운전에서 실내 유니트의 운전 부하를 고려하여 압축기에서 실내 유니트에 흐르는 냉매량을 적절하게 조절할 수 있도록 한 공기 조화기 및 그 제어방법을 제공함에 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide an air conditioner and a control method thereof in which the amount of refrigerant flowing from an compressor to an indoor unit can be properly adjusted in consideration of the operating load of the indoor unit in simultaneous heating and cooling operations.

상기 목적을 달성하기 위한 본 발명은, 압축기, 실외측 열교환기, 실외측 전동팽창밸브, 개폐밸브를 구비하는 실외 유니트; 실내측 열교환기를 각각 구비하는 복수 실내 유니트; 상기 압축기의 토출 냉매가 상기 압축기에서 상기 개폐밸브를 통과하여 상기 실내 유니트에 흐르는 제1냉매유로; 상기 압축기의 토출 냉매가 상기 압축기에서 상기 실외측 열교환기 및 실외측 전동팽창밸브를 통과하여 상기 실내 유니트에 흐르는 제2냉매유로; 및 상기 실내 유니트의 운전 부하에 따라 상기 제1냉매유로에 의하여 흐르는 냉매량과 상기 제2냉매유로에 의하여 흐르는 냉매량을 제어하기 위한 제어유니트를 포함하는 것을 특징으로 한다.The present invention for achieving the above object, an outdoor unit having a compressor, an outdoor side heat exchanger, an outdoor side electric expansion valve, an opening / closing valve; A plurality of indoor units each having an indoor side heat exchanger; A first refrigerant flow passage through which the discharged refrigerant of the compressor passes through the open / close valve in the compressor and flows into the indoor unit; A second refrigerant flow passage through which the discharged refrigerant of the compressor passes through the outdoor side heat exchanger and the outdoor side electric expansion valve to the indoor unit; And a control unit for controlling the amount of refrigerant flowing through the first refrigerant passage and the amount of refrigerant flowing through the second refrigerant passage according to the operating load of the indoor unit.

상기 개폐밸브는 입구가 상기 압축기와 실외측 열교환기 사이에 연결되고 출구가 상기 실내 유니트 측에 연결된다.The on-off valve has an inlet connected between the compressor and an outdoor side heat exchanger and an outlet connected to the indoor unit side.

상기 실외측 전동팽창밸브는 상기 실외측 열교환기의 출구에 연결한다.The outdoor expansion valve is connected to the outlet of the outdoor heat exchanger.

상기 제어유니트는 상기 제1냉매유로 또는 상기 제2냉매유로에 의하여 흐르는 냉매량을 조절하기 위하여 상기 개폐밸브와 상기 실외측 전동팽창밸브를 제어한다.The control unit controls the on-off valve and the outdoor-side expansion valve in order to adjust the amount of refrigerant flowing through the first refrigerant passage or the second refrigerant passage.

상기 제어유니트는 냉방 운전 또는 난방 운전하는 상기 실내 유니트의 운전 부하를 제공하기 위한 실내 제어부와, 상기 실내 제어부로부터 제공받은 운전 부하에 따라 상기 개폐밸브의 개폐와 상기 실외측 전동팽창밸브의 개도를 제어하는 실외 제어부를 포함한다.The control unit controls an indoor control unit for providing an operating load of the indoor unit for cooling operation or heating operation, and controlling the opening / closing of the open / close valve and the opening degree of the outdoor electric expansion valve according to the operating load provided from the indoor control unit. It includes an outdoor control unit.

상기 실외 제어부는 냉방 주체 냉난방 동시 운전하는 경우 냉방 운전하는 실내 유니트의 성능과 냉방 운전과 난방 운전을 포함한 전체 운전 실내유니트의 성능 이 모두 만족되도록 상기 실외측 전동팽창밸브의 개도를 설정한다.The outdoor control unit sets the opening degree of the outdoor electric expansion valve to satisfy both the performance of the indoor unit for cooling operation and the performance of the entire operation indoor unit including the cooling operation and the heating operation when the cooling subjects simultaneously operate the heating and cooling.

상기 실내 유니트는 실내온도 센서를 더 구비하고, 상기 실내 제어부는 실내 유니트의 실내 온도와 설정온도의 차에 따라 운전 부하를 산출한다.The indoor unit further includes an indoor temperature sensor, and the indoor control unit calculates an operating load according to a difference between an indoor temperature and a set temperature of the indoor unit.

상기 실외 제어부는 난방 운전하는 실내 유니트의 총 난방 운전부하와 냉방 운전하는 실내 유니트의 총 냉방 운전부하를 비교하여 비교결과에 따라 상기 실외측 전동팽창밸브의 개도를 설정한다.
The outdoor control unit compares the total heating operation load of the indoor unit for heating operation with the total cooling operation load of the indoor unit for cooling operation and sets the opening degree of the outdoor expansion valve according to the comparison result.

상기 목적을 달성하기 위한 본 발명은 압축기, 실외측 열교환기, 실외측 전동팽창밸브, 개폐밸브, 실외팬, 실외온도센서, 압력센서를 구비하는 실외 유니트; 실내 온도센서, 실내측 열교환기를 각각 구비하는 복수 실내 유니트; 상기 압축기의 토출 냉매가 상기 압축기에서 상기 개폐밸브를 통과하여 상기 실내 유니트에 흐르는 제1냉매유로; 상기 압축기의 토출 냉매가 상기 압축기에서 상기 실외측 열교환기 및 실외측 전동팽창밸브를 통과하여 상기 실내 유니트에 흐르는 제2냉매유로; 상기 실내온도센서를 통해 감지한 실내온도와 설정온도의 차에 따라 상기 실내 유니트의 운전 부하를 산출하고 산출된 운전 부하를 제공하기 위한 실내 제어부; 및 상기 실내 제어부로부터 제공받은 운전 부하에 따라 상기 개폐밸브의 개폐와 상기 실외측 전동팽창밸브의 개도를 제어하며, 상기 실외온도센서를 통해 감지한 실외온도에 따라 상기 압축기의 압축능력을 설정함과 동시에 설정된 압축능력에 따라 상기 압축기를 구동하는 경우 상기 압력센서를 통해 감지한 상기 압축기의 토출 압력에 따라 상기 실외팬의 속도를 제어하는 실외 제어부를 포함하는 것을 특징으로 한 다.The present invention for achieving the above object is an outdoor unit having a compressor, an outdoor side heat exchanger, an outdoor side expansion valve, an open / close valve, an outdoor fan, an outdoor temperature sensor, a pressure sensor; A plurality of indoor units each having an indoor temperature sensor and an indoor side heat exchanger; A first refrigerant flow passage through which the discharged refrigerant of the compressor passes through the open / close valve in the compressor and flows into the indoor unit; A second refrigerant flow passage through which the discharged refrigerant of the compressor passes through the outdoor side heat exchanger and the outdoor side electric expansion valve to the indoor unit; An indoor control unit for calculating an operating load of the indoor unit and providing the calculated operating load according to a difference between an indoor temperature and a set temperature detected by the indoor temperature sensor; And controlling the opening and closing of the on-off valve and the opening degree of the outdoor side electric expansion valve according to the operating load provided from the indoor control unit, and setting the compression capacity of the compressor according to the outdoor temperature detected by the outdoor temperature sensor. At the same time, when driving the compressor according to the set compression capacity characterized in that it comprises an outdoor control unit for controlling the speed of the outdoor fan in accordance with the discharge pressure of the compressor detected by the pressure sensor.

상기 실외 제어부는 감지한 실외온도가 높을 수록 상기 압축기의 압축능력을 크게 설정한다.The outdoor controller sets the compression capacity of the compressor as the detected outdoor temperature is higher.

상기 실외 제어부는 상기 압축기의 토출 압력을 감소시키기 위해 상기 실외팬의 속도를 증가하고 상기 압축기의 토출 압력을 증가하기 위해 상기 실외팬의 속도를 감소한다.The outdoor controller increases the speed of the outdoor fan to decrease the discharge pressure of the compressor and decreases the speed of the outdoor fan to increase the discharge pressure of the compressor.

상기 실외팬의 속도를 감지하기 위한 속도센서를 더 구비하고, 상기 실외 제어부는 상기 속도센서를 통해 감지한 실외팬의 속도에 기초하여 상기 실외팬을 제어한다.
The apparatus further includes a speed sensor for detecting a speed of the outdoor fan, and the outdoor controller controls the outdoor fan based on the speed of the outdoor fan detected by the speed sensor.

상기 목적을 달성하기 위한 본 발명은, 압축기, 실외측 열교환기, 실외측 전동팽창밸브, 개폐밸브를 구비하는 실외 유니트, 실내측 열교환기를 각각 구비하는 복수 실내 유니트, 상기 압축기의 토출 냉매가 상기 압축기에서 상기 개폐밸브를 통과하여 상기 실내 유니트에 흐르는 제1냉매유로, 상기 압축기의 토출 냉매가 상기 압축기에서 상기 실외측 열교환기 및 실외측 전동팽창밸브를 통과하여 상기 실내 유니트에 흐르는 제2냉매유로를 구비하는 공기 조화기의 제어방법에 있어서, 상기 실내 유니트의 운전 부하를 산출하고, 산출된 운전부하에 따라 상기 제1냉매유로에 의하여 흐르는 냉매량과 상기 제2냉매유로에 의하여 흐르는 냉매량을 제어하는 것을 특징으로 한다.The present invention for achieving the above object is a compressor, an outdoor side heat exchanger, an outdoor side expansion valve, an outdoor unit having an on-off valve, a plurality of indoor units each having an indoor side heat exchanger, the discharge refrigerant of the compressor is the compressor The first refrigerant flow path flowing through the on-off valve to the indoor unit, the discharge refrigerant of the compressor flows through the outdoor heat exchanger and the outdoor electric expansion valve in the compressor to the second refrigerant flow path flowing in the indoor unit In the control method of the air conditioner provided, calculating the operating load of the indoor unit, and controlling the amount of refrigerant flowing through the first refrigerant passage and the amount of refrigerant flowing by the second refrigerant passage in accordance with the calculated operating load. It features.

상기 실내 유니트의 운전 부하는 상기 실내 유니트의 실내온도와 설정온도의 차에 따라 산출한다.The operating load of the indoor unit is calculated according to the difference between the indoor temperature and the set temperature of the indoor unit.

상기 운전부하는 냉방 주체 냉난방 동시 운전하는 경우 냉방 운전하는 실내 유니트의 총 냉방 운전 부하와 난방 운전하는 실내 유니트의 총 난방 운전부하를 각각 산출하고, 상기 총 난방 운전부하와 상기 총 냉방 운전 부하를 비교하고, 상기 비교 결과에 따라 상기 개폐밸브의 개폐와 상기 실외측 전동팽창밸브의 개도를 제어한다.The driving load is calculated by calculating the total cooling operation load of the indoor unit for the cooling operation and the total heating operation load of the indoor unit for the heating operation when the cooling subjects air conditioning simultaneous operation of the cooling subjects, and compares the total heating operation load with the total cooling operation load The opening and closing of the on-off valve and the opening degree of the outdoor expansion valve are controlled according to the comparison result.

상기 실외측 전동팽창밸브의 개도 제어는 냉방 주체 냉난방 동시 운전하는 경우 냉방 운전하는 실내 유니트의 성능과 냉방 운전과 난방 운전을 포함한 전체 운전 실내유니트의 성능이 모두 만족되도록 한다.The opening degree control of the outdoor electric expansion valve ensures that the performance of the indoor unit for cooling operation and the performance of the entire operation indoor unit including the cooling operation and the heating operation are satisfied when the cooling main body is simultaneously heating and cooling.

상기 냉매량 제어가 끝나면, 실외 유니트에 마련된 실외온도센서를 이용하여 실외온도를 감지하고, 감지된 실외온도에 따라 상기 압축기의 압축능력을 설정한다.After the control of the amount of refrigerant, the outdoor temperature is sensed using the outdoor temperature sensor provided in the outdoor unit, and the compression capacity of the compressor is set according to the detected outdoor temperature.

상기 설정된 압축능력에 따라 상기 압축기를 구동하는 경우, 상기 압축기의 토출압력을 감지하고 감지된 압축기의 토출압력에 따라 상기 실외 유니트에 마련된 실외팬의 속도를 제어한다.When the compressor is driven according to the set compression capacity, the discharge pressure of the compressor is sensed and the speed of the outdoor fan provided in the outdoor unit is controlled according to the detected discharge pressure of the compressor.

상기 실외팬의 속도 제어는 상기 압축기의 토출 압력과 설정된 기준압력을 비교하고, 비교결과 상기 압축기의 토출압력이 크면 상기 실외팬의 속도를 증가하고 상기 압축기의 토출 압력이 상기 기준압력보다 작으면 상기 압축기의 토출압력이 상기 기준압력보다 작으면 상기 실외팬의 속도를 감소한다.
The control of the speed of the outdoor fan compares the discharge pressure of the compressor with the set reference pressure.As a result of the comparison, if the discharge pressure of the compressor is large, the speed of the outdoor fan is increased, and if the discharge pressure of the compressor is less than the reference pressure, When the discharge pressure of the compressor is less than the reference pressure, the speed of the outdoor fan is reduced.

이하, 본 발명의 바람직한 실시 예를 첨부 도면에 따라 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 실외 유니트에 복수 실내 유니트를 연결한 멀티형 공기 조화기에 적용한다.The present invention applies to a multi-type air conditioner in which a plurality of indoor units are connected to an outdoor unit.

본 발명에 따른 공기 조화기는, 도 1에 도시한 바와 같이, 실외 유니트(100), 4개 실내 유니트(200a, 200b, 200c, 200d) 그리고 상기 실외 유니트와 상기 실내 유니트 사이에 연결되어 냉매의 흐름을 전환하기 위한 냉매전환회로(300)를 구비한다.As shown in FIG. 1, the air conditioner according to the present invention is connected between the outdoor unit 100, the four indoor units 200a, 200b, 200c, 200d and the outdoor unit and the indoor unit to flow of refrigerant. It is provided with a refrigerant switching circuit 300 for switching.

실외 유니트(100)는 실외측 열교환기(101a,101b), 실외팬(113), 실외 열교환기(101a,101b)의 출구측에 연결된 실외측 전동팽창밸브(102), 실외측 전동팽창밸브에 병렬 연결된 개폐밸브(111) 및 체크밸브(112), 능력가변형 압축기(103a,103b), 사방향 밸브(104), 압력센서(105), 리시버(106), 어큐뮬레이터(107), 압축기의 토출 냉매를 실외측 열교환기를 거치지 않고 우회하여 난방 운전의 실내 유니트 측으로 보내기 위한 개폐밸브(109)와 체크밸브(110)를 포함한다.The outdoor unit 100 is connected to an outdoor electric expansion valve 102 and an outdoor electric expansion valve connected to the outlet side of the outdoor heat exchanger 101a and 101b, the outdoor fan 113, and the outdoor heat exchanger 101a and 101b. Open / close valve 111 and check valve 112 connected in parallel, variable capacity compressors 103a and 103b, four-way valve 104, pressure sensor 105, receiver 106, accumulator 107, discharge refrigerant from compressor It includes the on-off valve 109 and the check valve 110 for bypassing the outdoor heat exchanger without passing through to the indoor unit side of the heating operation.

그리고 실외 유니트(100)는 실외온도를 감지하기 위한 실외온도센서(108), 실외팬(113)의 속도를 감지하기 위한 속도센서(114), 압축기에서 토출하는 냉매의 토출 압력을 감지하기 위한 압력센서(105)를 구비한다.The outdoor unit 100 includes an outdoor temperature sensor 108 for detecting an outdoor temperature, a speed sensor 114 for detecting a speed of an outdoor fan 113, and a pressure for detecting a discharge pressure of a refrigerant discharged from a compressor. The sensor 105 is provided.

또, 본 발명의 공기 조화기는 실외 유니트를 제어하기 위한 실외 제어부(120)를 구비한다.In addition, the air conditioner of the present invention includes an outdoor control unit 120 for controlling the outdoor unit.

실외 제어부(120)는 후술하는 실내제어부로부터 제공받은 실내 유니트의 운전 부하에 대한 정보를 이용하여 실외측 전동팽창밸브(102)의 개도를 제어하여 난방 운전의 실내 유니트와 냉방 운전의 실내 유니트에 보내지는 냉매를 적절하게 조절하며, 실외온도센서(108), 속도센서(114), 압력센서(105)를 통해 제공받은 정보를 이용하여 압축기(103a, 103b)와 실외팬(113)를 제어한다.The outdoor control unit 120 controls the opening degree of the outdoor electric expansion valve 102 by using the information on the operating load of the indoor unit provided from the indoor control unit, which will be described later, and sends it to the indoor unit of the heating operation and the indoor unit of the cooling operation. Controls the refrigerant appropriately and controls the compressors 103a and 103b and the outdoor fan 113 by using the information provided through the outdoor temperature sensor 108, the speed sensor 114, and the pressure sensor 105.

각 실내 유니트(200a, 200b, 200c, 200d)는 실내측 열교환기(201a, 201b, 201c, 201d), 실내측 전동팽창밸브(202a, 202b, 202c, 202d), 실내온도를 감지하기 위한 실내온도센서(203a,203b,203c,203d)를 포함한다.Each indoor unit 200a, 200b, 200c, 200d includes an indoor heat exchanger 201a, 201b, 201c, 201d, an indoor electric expansion valve 202a, 202b, 202c, 202d, and an indoor temperature for sensing an indoor temperature. Sensors 203a, 203b, 203c, and 203d.

본 발명의 공기 조화기는 각 실내 유니트를 제어하기 위한 실내 제어부(210a, 210b, 210c, 210d)를 구비한다.The air conditioner of the present invention has indoor control units 210a, 210b, 210c, and 210d for controlling each indoor unit.

각 실내 제어부는 실내온도센서(203a,203b,203c,203d)를 통해 감지한 실내 온도와, 기능키 또는 리모콘을 통해 사용자에 의해 설정된 설정온도의 차에 따라 해당 실내 유니트의 운전부하를 산출하고, 산출된 운전 부하에 대한 정보를 실외 제어부(120)에 각각 제공한다. Each indoor control unit calculates the operating load of the corresponding indoor unit according to the difference between the room temperature detected by the room temperature sensors 203a, 203b, 203c, and 203d and the set temperature set by the user through a function key or a remote controller. Information about the calculated operating load is provided to the outdoor controller 120, respectively.

또 실내 제어부는 실외 제어부와 연계하여 실내측 전동팽창밸브(202a, 202b, 202c, 202d)와 실내팬(도시하지 않음)을 제어한다.In addition, the indoor control unit controls the indoor-side electric expansion valves (202a, 202b, 202c, 202d) and the indoor fan (not shown) in association with the outdoor control unit.

냉매전환회로(300)는 실외 유니트(100)와 각 실내 유니트(200a, 200b, 200c, 200d) 사이의 고압가스관(HPP)에 설치되는 고압가스밸브(301a, 301b, 301c, 301d), 저압가스관(LPP)상에 각각 설치되는 저압가스밸브(302a, 302b, 302c, 302d), 각 실내 유니트(200a, 200b, 200c, 200d)에서 실외 유니트(100) 측으로 배출되는 공통액압라인 상에 설치되는 전동팽창밸브(303)를 포함한다. 냉매전환회로를 구성하는 각 각의 밸브들은 실외 제어부의 제어에 따라 작동한다.The refrigerant switching circuit 300 is a high pressure gas valve (301a, 301b, 301c, 301d) installed in the high pressure gas pipe (HPP) between the outdoor unit 100 and each indoor unit (200a, 200b, 200c, 200d), low pressure gas pipe Low pressure gas valves 302a, 302b, 302c and 302d respectively installed on the LPP, and electric motors installed on the common hydraulic line discharged from the indoor units 200a, 200b, 200c and 200d to the outdoor unit 100 side. Expansion valve 303 is included. Each valve constituting the refrigerant switching circuit operates under the control of the outdoor control unit.

실외 유니트(100)의 사방향밸브(104)의 일단과 냉매전환회로(300)의 고압가스밸브(301a, 301b, 301c, 301d)는 고압가스관(HPP)을 통해 연결되어 있다. 또한, 실외 유니트(100)의 어큐뮬레이터(107)와 냉매전환회로(300)의 저압가스밸브(302a, 302b, 302c, 302d)는 저압가스관(LPP)을 통해 연결되어 있다.One end of the four-way valve 104 of the outdoor unit 100 and the high pressure gas valves 301a, 301b, 301c, and 301d of the refrigerant switching circuit 300 are connected through the high pressure gas pipe HPP. In addition, the accumulator 107 of the outdoor unit 100 and the low pressure gas valves 302a, 302b, 302c, and 302d of the refrigerant switching circuit 300 are connected through a low pressure gas pipe (LPP).

실외 유니트(100)의 실외측 열교환기(101a,101b)와 냉매전환회로(300)사이에는 리턴배관(RP)이 설치되어 있으며, 이 리턴배관(RP)에는 실외측 전동팽창밸브(102)가 설치된다. 이 전동팽창밸브(102)에 병렬 연결된 개폐 밸브(111)는 유량조정용 밸브이다.A return pipe RP is installed between the outdoor side heat exchanger 101a and 101b of the outdoor unit 100 and the refrigerant switching circuit 300. The return pipe RP is provided with an outdoor expansion valve 102. Is installed. The on-off valve 111 connected in parallel with the electric expansion valve 102 is a valve for adjusting the flow rate.

이 리턴배관(RP)과 각 실내측 열교환기(201a, 201b, 201c, 201d)의 배관(EP1, EP2, EP3, EP4)들이 접속된다.The return pipe RP and the pipes EP1, EP2, EP3, EP4 of each indoor side heat exchanger 201a, 201b, 201c, 201d are connected.

이하에서는 냉방 주체 냉난방 동시 운전하는 과정을 설명한다.Hereinafter, the process of simultaneously operating the cooling subjects air conditioning.

도 2를 참고하면, 1개의 실내 유니트(200a)가 난방운전 모드이고 나머지 3개의 실내 유니트(200b,200c,200d)가 냉방운전 모드로 설정된 경우이다. Referring to FIG. 2, one indoor unit 200a is in a heating operation mode and the remaining three indoor units 200b, 200c, and 200d are set in a cooling operation mode.

도 2의 작동을 살펴보면, 먼저 압축기(103a, 103b)를 구동하고 실외측 전동팽창밸브(102)를 소정의 개도로 개방하며, 개폐밸브(109)를 개방하고, 난방 운전의 실내 유니트 측의 고압가스밸브(301a)는 개방하고 냉방 운전의 실내 유니트 측의 고압가스밸브(301b, 301c, 301d)는 폐쇄하고, 난방 운전의 실내 유니트 측의 저압가스밸브(302a)는 폐쇄하고, 냉방 운전의 실내 유니트 측의 저압가스밸브(302b,302c,302d)는 개방한다. Referring to the operation of FIG. 2, first, the compressors 103a and 103b are driven, the outdoor electric expansion valve 102 is opened to a predetermined opening degree, the on / off valve 109 is opened, and the high pressure of the indoor unit side of the heating operation is opened. The gas valve 301a is opened, the high pressure gas valves 301b, 301c, and 301d on the indoor unit side of the cooling operation are closed, and the low pressure gas valve 302a on the indoor unit side of the heating operation is closed, and the indoor operation of the cooling operation is performed. The low pressure gas valves 302b, 302c and 302d on the unit side are opened.                     

압축기(103a,103b)에서 토출되는 냉매는 실외측 열교환기(101a, 101b)를 거쳐 열교환하고 실외측 전동팽창밸브(102)를 통과한 다음 냉방 운전의 실내 유니트 측으로 보내진다 . 이와 함께 압축기(103a,103b)에서 토출되는 일부의 냉매는 개폐밸브(109)와 체크밸브(110)를 거친 다음 난방 운전하는 실내 유니트로 보내진다. The refrigerant discharged from the compressors 103a and 103b exchanges heat through the outdoor side heat exchangers 101a and 101b, passes through the outdoor side electric expansion valve 102, and is then sent to the indoor unit side of the cooling operation. In addition, a part of the refrigerant discharged from the compressors 103a and 103b is sent to the indoor unit for heating after passing through the on / off valve 109 and the check valve 110.

실외 제어부(120)는 난방 운전하는 실내 유니트의 총 난방 운전 부하와 냉방 운전하는 실내 유니트의 총 냉방 운전 부하를 고려하여 실외측 전동팽창밸브(102)의 개도를 설정함으로써 냉방 운전의 실내 유니트와 난방 운전의 실내 유니트로 보내지는 냉매량을 조절한다. The outdoor control unit 120 sets the opening degree of the outdoor electric expansion valve 102 in consideration of the total heating operation load of the indoor unit for heating operation and the total cooling operation load of the indoor unit for cooling operation, thereby controlling the indoor unit and heating for the cooling operation. Adjust the amount of refrigerant sent to the indoor unit of operation.

이를 도 3 및 도 4에 따라 설명한다.This will be described with reference to FIGS. 3 and 4.

실외 제어부(120)는 냉방 운전의 실내 유니트의 운전 부하와 난방 운전의 실내 유니트의 운전 부하를 고려하여 실외 전동팽창밸브의 개도를 제어한다. The outdoor control unit 120 controls the opening degree of the outdoor electric expansion valve in consideration of the operation load of the indoor unit of the cooling operation and the operation load of the indoor unit of the heating operation.

예를 들면, 각 실내 제어부로 제공받은 난방 운전의 실내 유니트에 대한 총 난방 운전부하가 냉방 운전의 실내 유니트에 대한 총 냉방 운전부하보다 크면 실외측 전동팽창밸브(102)의 개도를 제1설정개도값으로 설정한다. 여기서 제1설정개도값은 시험을 통해 얻는 데이터로서 미리 저장하는데, 도 3와 같이, 실내온도 20℃(습도제외온도)/15℃(습도포함온도)이고 실외온도가 -5℃에서 시험하면, 실외측 전동팽창밸브(102)에 대한 제1설정개도값은 50%(A 참조)로 설정할 때 냉방 운전의 실내 유니트의 성능과 전체 운전 실내 유니트의 성능(난방 운전하는 실내 유니트와 냉방 운전하는 실내 유니트를 포함)이 모두 최적임을 알 수 있다.For example, when the total heating operation load for the indoor unit of the heating operation provided to each indoor control unit is greater than the total cooling operation load for the indoor unit of the cooling operation, the opening degree of the outdoor electric expansion valve 102 is set to the first set opening degree. Set to a value. Here, the first set opening value is stored in advance as data obtained through a test. As shown in FIG. 3, when the indoor temperature is 20 ° C. (excluding humidity) / 15 ° C. (humidity including temperature) and the outdoor temperature is tested at −5 ° C., When the first set opening value for the outdoor electric expansion valve 102 is set to 50% (see A), the performance of the indoor unit for cooling operation and the performance of the entire operating indoor unit (the indoor unit for heating operation and the indoor operation for cooling operation). It can be seen that the units) are all optimal.

다른 예를 들면, 난방 운전의 실내 유니트에 대한 총 난방 운전부하가 냉방 운 전의 실내 유니트에 대한 총 냉방 운전부하보다 크지 않으면 실외측 전동팽창밸브(102)의 개도를 제2설정개도값으로 설정한다. 여기서 제2설정개도값은 시험을 통해 얻는 데이터로서 미리 저장하는데, 도 4와 같이, 실내온도 27℃(습도제외온도)/19.5℃(습도포함온도)이고 실외온도가 15℃(습도제외온도)/10℃(습도포함온도)에서 시험하면, 실외측 전동팽창밸브(102)에 대한 제2설정개도값은 35%(B)로 설정할 때 냉방 운전의 실내 유니트의 성능과 전체 운전 실내 유니트의 성능(난방 운전하는 실내 유니트와 냉방 운전하는 실내 유니트를 포함 )이 모두 최적임을 알 수 있다.As another example, if the total heating operation load for the indoor unit of the heating operation is not greater than the total cooling operation load for the indoor unit of the cooling operation, the opening degree of the outdoor electric expansion valve 102 is set to the second set opening value. . Here, the second set opening value is stored in advance as data obtained through a test. As shown in FIG. 4, the indoor temperature is 27 ° C. (excl. When tested at / 10 ° C (humidity including temperature), when the second set opening value for the outdoor-side electric expansion valve 102 is set to 35% (B), the performance of the indoor unit of the cooling operation and the performance of the entire operating indoor unit It can be seen that both (including indoor units for heating and cooling) are optimal.

토출 냉매에 대한 제어가 끝나면, 실외 제어부(120)는 실외 온도와 설정된 기준온도를 비교하여 그 비교결과에 따라 압축기의 압축능력을 설정하고 설정된 압축능력에 기초하여 압축기를 구동한다. 예를 들어 실외 온도가 기준온도 보다 크면 제1압축능력에 따라 압축기를 구동하고, 실외 온도가 기준 온도보다 크지 않으면 제1압축능력보다 작은 제2압축능력에 따라 압축기를 구동하는 것으로, 이는 실외 온도에 따라 압축기의 압축능력을 설정하기 위함이다.After the control of the discharged refrigerant, the outdoor control unit 120 compares the outdoor temperature with the set reference temperature, sets the compression capacity of the compressor according to the comparison result, and drives the compressor based on the set compression capacity. For example, if the outdoor temperature is greater than the reference temperature, the compressor is driven according to the first compression capacity. If the outdoor temperature is not greater than the reference temperature, the compressor is driven according to the second compression capacity less than the first compression capacity. This is to set the compression capacity of the compressor.

압축기의 압축능력에 대한 설정이 끝나면, 실외 제어부(120)는 설정된 압축능력에 따라 압축기를 구동하는 상태에서 압축기의 토출 압력과 설정된 기준 압력을 비교하여 그 비교결과에 따라 실외팬의 속도를 제어한다. 예를 들어 압축기의 토출 압력이 기준압력의 하한값과 상한값 사이에 속하면 현재의 압축기 운전을 유지한다. 반면 압축기의 토출 압력이 기준압력의 상한값이상이면 실외팬의 속도를 증가시켜 열교환 능력을 높여서 토출압력이 떨어지도록 하며, 기준압력의 하한값이하이 면 실외팬의 속도를 감소시켜 열교환 능력을 낮추어 토출압력이 높아지도록 함으로써 압축기의 토출 압력이 기준압력을 만족하도록 한다.After setting the compression capacity of the compressor, the outdoor control unit 120 compares the discharge pressure of the compressor and the set reference pressure in the state of driving the compressor according to the set compression capacity to control the speed of the outdoor fan according to the comparison result. . For example, if the discharge pressure of the compressor falls between the lower limit value and the upper limit value of the reference pressure, the current compressor operation is maintained. On the other hand, if the discharge pressure of the compressor is higher than the upper limit of the reference pressure, the speed of the outdoor fan is increased to increase the heat exchange capacity, and if the discharge pressure is lower than the lower limit of the reference pressure, the discharge pressure is decreased by reducing the speed of the outdoor fan. By increasing this, the discharge pressure of the compressor satisfies the reference pressure.

상기와 같은 구성을 갖는 본 발명에 따른 공기 조화기의 제어방법을 첨부 도면에 따라 설명한다.A control method of the air conditioner according to the present invention having the above configuration will be described with reference to the accompanying drawings.

도 5a 및 도 5b는 본 발명에 따른 공기 조화기의 제어방법의 흐름도로서, 1개의 실내 유니트(200a)에 대해 난방운전하고, 3개의 실내 유니트(200a, 200b, 200c, 200d)에 대해 냉방운전하는 냉방 주체 냉난방 동시 운전하는 경우의 예이다.5A and 5B are flowcharts of the control method of the air conditioner according to the present invention, and heating operation for one indoor unit 200a and cooling operation for three indoor units 200a, 200b, 200c, and 200d. This is an example of a case where the cooling subjects are operated simultaneously.

먼저, 공기 조화기에 전원 투입이 이루어지면 실외 제어부(120)는 초기화를 수행한다(10). 초기화 과정은 압축기를 구동하고 각 밸브의 작동을 제어하는 등 미리 정해진 제어프로그램에 따라 이루어지는 처리 동작을 말한다.First, when power is supplied to the air conditioner, the outdoor controller 120 performs initialization (10). The initialization process refers to a processing operation performed according to a predetermined control program such as driving a compressor and controlling the operation of each valve.

초기화가 끝나면, 각 실내 제어부에서는 난방 운전 모드 또는 냉방 운전 모드 중 해당 실내 유니트에 대하여 설정된 운전 모드를 구별하기 위한 운전모드신호를 실외 제어부에 제공한다. 실외 제어부(120)는 각 실내제어부로 운전모드 신호를 입력받고 각 실내 유니트의 운전 모드를 인식한다(12).After the initialization, each indoor control unit provides the outdoor control unit with the operation mode signal for distinguishing the operation mode set for the indoor unit among the heating operation mode or the cooling operation mode. The outdoor controller 120 receives a driving mode signal to each indoor controller and recognizes a driving mode of each indoor unit (12).

실외 제어부(120)는 냉방 운전에 설정된 실내 유니트의 운전대수(Nc)가 난방 운전에 설정된 실내 유니트의 운전대수(Nh)보다 많은지 판단한다(14).The outdoor controller 120 determines whether the number Nc of the indoor units set for the cooling operation is greater than the number Nh of the indoor units set for the heating operation (14).

냉방 운전에 설정된 실내 유니트의 운전대수(Nc)가 난방 운전에 설정된 실내 유니트의 운전대수(Nh)보다 많지 않은 경우 해당 운전모드에 따라 공기 조화기를 운전한다(15).If the number Nc of the indoor units set for the cooling operation is not greater than the number Nh of the indoor units set for the heating operation, the air conditioner is operated according to the corresponding operation mode (15).

냉방 운전에 설정된 실내 유니트의 운전대수(Nc)가 난방 운전에 설정된 실내 유니트의 운전대수(Nh)보다 많은 경우, 냉방 주체 냉난방 동시 운전에 맞게 사방밸브(104)를 전환하고 개폐밸브(109)를 개방한다. 이에 따라 압축기에서 토출되는 냉매는 응축기로 작용하는 실외측 열교환기(101a, 101b)와 실외측 전동팽창밸브(102)를 거쳐 냉방 운전하는 실내 유니트에 보내질 수 있도록 하고 일부의 토출 냉매는 실외측 열교환기(101a, 101b)를 거치지 않고 우회하여 난방 운전하는 실내 유니트에 보내질 수 있도록 한다(16). If the number of operating units Nc of the indoor unit set for the cooling operation is larger than the number of operating units Nh of the indoor unit set for the heating operation, the four-way valve 104 is switched and the on-off valve 109 is switched for the simultaneous cooling and cooling operation. Open. Accordingly, the refrigerant discharged from the compressor can be sent to the indoor unit for cooling operation through the outdoor heat exchangers 101a and 101b and the outdoor electric expansion valve 102 which act as condensers, and some of the refrigerant discharged to the outdoor heat exchanger. By bypassing the devices (101a, 101b) to be sent to the indoor unit to bypass the heating operation (16).

각 실내 제어부에서는 실내 온도와 설정 온도의 차에 기초하여 해당 실내 유니트 즉 난방 실내 유니트 또는 냉방 실내 유니트에서의 운전 부하를 산출하고, 산출된 운전 부하에 대한 정보를 실외 제어부로 제공한다. 실외 제어부(120)는 각 실내제어부로 해당 실내 유니트에 대한 운전 부하를 입력받는다(18).Each indoor control unit calculates an operating load of the corresponding indoor unit, that is, the heating indoor unit or the cooling indoor unit, based on the difference between the indoor temperature and the set temperature, and provides the outdoor control unit with information about the calculated operating load. The outdoor control unit 120 receives an operation load for the corresponding indoor unit to each indoor control unit (18).

실외 제어부(120)는 각 실내 제어부로 제공받은 난방 운전의 실내 유니트에 대한 총 난방 운전부하(LTh)가 냉방 운전의 실내 유니트에 대한 총 냉방 운전부하(LTc)보다 큰지 판단하고(20), 총 난방 운전부하(LTh)가 크면 실외측 전동팽창밸브(102)의 개도(Vo)를 제1설정개도값(V1)으로 설정한다(22). 이와 달리 각 실내 제어부로 제공받은 난방 운전의 실내 유니트에 대한 총 난방 운전부하(LTh)가 냉방 운전의 실내 유니트에 대한 총 냉방 운전부하(LTc)보다 크지 않으면 실외측 전동팽창밸브(102)의 개도(Vo)를 제2설정개도값(V2)으로 설정한다(22). 여기서 제1설정개도값(V1)과 제2설정개도값(V2)은 시험을 통해 얻는 데이터로서 미리 저장한다.The outdoor control unit 120 determines whether the total heating operation load LTh for the indoor unit of the heating operation provided to each indoor control unit is greater than the total cooling operation load LTc for the indoor unit of the cooling operation (20). If the heating operation load LTh is large, the opening degree Vo of the outdoor-side electric expansion valve 102 is set to the first set opening value V1 (22). On the other hand, if the total heating operation load LTh for the indoor unit of the heating operation provided to each indoor control unit is not greater than the total cooling operation load LTc for the indoor unit of the cooling operation, the opening degree of the outdoor electric expansion valve 102 is (Vo) is set to the second set opening value V2 (22). Here, the first set opening value V1 and the second set opening value V2 are stored in advance as data obtained through a test.

실외 제어부(120)는 제1설정개도값(V1) 또는 제2설정개도값(V2)에 따라 실외측 전동팽창밸브를 구동하여 개도 제어를 수행한다(26).The outdoor controller 120 controls the opening degree by driving the outdoor-side electric expansion valve according to the first set opening value V1 or the second set opening value V2 (26).

실외측 전동팽창밸브의 개도에 대한 제어가 끝나면, 실외 온도센서(108)를 통해 실외 감지신호를 입력받아 실외온도를 인식한다(28).After the control of the opening degree of the outdoor electric expansion valve is finished, the outdoor temperature is received by receiving the outdoor detection signal through the outdoor temperature sensor 108 (28).

실외 제어부(120)는 감지된 실외온도(Mo)가 설정된 기준온도(Mr)보다 큰지를 판단한다(30). 본 실시예에서 기준온도(Mr)는 0 ℃로 설정한다.The outdoor controller 120 determines whether the detected outdoor temperature Mo is greater than the set reference temperature Mr (S30). In this embodiment, the reference temperature Mr is set to 0 ° C.

실외온도(Mo)가 기준온도(Mr)보다 크면, 실외 제어부(120)는 압축기의 압축능력(CP)을 제1압축능력(CP1)으로 설정한다(32).If the outdoor temperature Mo is greater than the reference temperature Mr, the outdoor control unit 120 sets the compressor's compression capacity CP to the first compression capacity CP1 (32).

실외 제어부(120)는 설정된 제1압축능력에 따라 압축기를 구동하고(34), 압력 센서(105)를 통해 냉매 토출압력 감지신호를 입력받아 토출 냉매의 압력을 인식한다(36).The outdoor controller 120 drives the compressor according to the set first compression capability (34), receives the refrigerant discharge pressure detection signal through the pressure sensor 105, and recognizes the pressure of the discharge refrigerant (36).

실외 제어부(120)는 감지된 토출 압력(Pd)이 제1기준압력의 하한값(P1)과 상한값(P2) 사이에 속하는 지를 판단하고(38), 그 판단 결과 감지된 토출 압력(Pd)이 제1기준압력의 하한값(P1)이하이거나 상한값(P2)이상이면 토출 압력을 조절하기 위하여 실외팬(113)의 속도를 조절한다(40). 압축기의 토출 압력이 상한값이상이면 실외팬(113)의 속도를 증가시켜 열교환 능력을 높여서 토출압력이 떨어지도록 하며, 하한값이하이면 실외팬(113)의 속도를 감소시켜 열교환 능력을 낮추어 토출압력이 높아지도록 한다. 이때 실외 제어부는 속도센서를 통해 감지한 실외팬(113)의 속도에 기초하여 실외팬(113)을 제어한다. 실외팬(113)의 조절이 끝나면 동작 36으로 진행한다.The outdoor control unit 120 determines whether the detected discharge pressure Pd falls between the lower limit value P1 and the upper limit value P2 of the first reference pressure (38). If the lower limit value P1 or the upper limit value P2 is equal to or lower than the first reference pressure, the speed of the outdoor fan 113 is adjusted to adjust the discharge pressure (40). If the discharge pressure of the compressor is higher than the upper limit value, the speed of the outdoor fan 113 is increased to increase the heat exchange capacity, so that the discharge pressure is lowered. To do that. At this time, the outdoor controller controls the outdoor fan 113 based on the speed of the outdoor fan 113 detected by the speed sensor. When the adjustment of the outdoor fan 113 is finished, the operation proceeds to operation 36.

동작 30의 판단결과 실외온도(Mo)가 기준온도(Mr)보다 크지 않으면, 실외 제어부(120)는 압축기의 압축능력(CP)을 제1압축능력(CP1)보다 작은 제2압축능력(CP2) 으로 설정한다(42). 이는 실외온도에 따라 압축기의 압축능력을 설정함으로써 공기 조화기의 운전 성능을 높이기 위함이다.If the outdoor temperature Mo is not greater than the reference temperature Mr as a result of operation 30, the outdoor control unit 120 may reduce the compression capacity CP of the compressor to the second compression capacity CP2 smaller than the first compression capacity CP1. (42). This is to increase the operating performance of the air conditioner by setting the compression capacity of the compressor according to the outdoor temperature.

실외 제어부(120)는 설정된 제2압축능력에 따라 압축기를 구동하고(44), 압력 센서(105)를 통해 토출 냉매의 압력을 인식하고(46), 감지된 토출 압력(Pd)이 제2기준압력의 하한값(P11)과 상한값(P12) 사이에 속하는 지를 판단한다(48).The outdoor control unit 120 drives the compressor according to the set second compression capacity (44), recognizes the pressure of the discharged refrigerant through the pressure sensor 105 (46), and the detected discharge pressure (Pd) is the second reference It is determined whether the pressure falls between the lower limit value P11 and the upper limit value P12 (48).

동작 48의 판단 결과 감지된 토출 압력(Pd)이 제2기준압력의 하한값(P11)이하이거나 상한값(P12)이상이면 토출 압력을 조절하기 위하여 실외팬(113)의 속도를 조절한다(50). 압축기의 토출 압력이 상한값이상이면 실외팬(113)의 속도를 증가시켜 열교환 능력을 높여서 토출압력이 떨어지도록 하며, 하한값이하이면 실외팬(113)의 속도를 감소시켜 열교환 능력을 낮추어 토출압력이 높아지도록 한다. 실외팬(113)의 조절이 끝나면 동작 46으로 진행한다.If the detected discharge pressure Pd is less than or equal to the lower limit value P11 or greater than or equal to the upper limit value P12 of the second reference pressure, the speed of the outdoor fan 113 is adjusted to adjust the discharge pressure (50). If the discharge pressure of the compressor is higher than the upper limit value, the speed of the outdoor fan 113 is increased to increase the heat exchange capacity, so that the discharge pressure is lowered. To do that. After the adjustment of the outdoor fan 113, the operation proceeds to operation 46.

동작 38에서 감지된 토출 압력(Pd)이 제1기준압력의 하한값(P1)과 상한값(P1) 사이에 속하는 경우 또는 동작 48에서 감지된 토출 압력(Pd)이 제2기준압력의 하한값(P11)과 상한값(P12) 사이에 속하는 경우, 실외 제어부(120)는 운전 정지인지를 판단하고(52), 그 판단 결과 운전 정지가 아니면 계속해서 냉방 주체 냉난방 동시 운전을 수행하기 위해 동작 12로 진행한다.When the discharge pressure Pd detected in operation 38 falls between the lower limit value P1 and the upper limit value P1 of the first reference pressure, or the discharge pressure Pd detected in operation 48 is the lower limit value P11 of the second reference pressure. If the value falls within the upper limit value P12, the outdoor controller 120 determines whether the operation is stopped (52), and if the determination is not an operation stop, the outdoor controller 120 proceeds to operation 12 in order to continuously perform simultaneous cooling and cooling / cooling operations.

동작 50의 판단 결과 운전 정지이면 압축기를 오프하며 그 이외에 실외팬(113) 등의 각 구동부를 오프하여 공기 조화기의 운전을 끝낸다. When the operation 50 determines that the operation is stopped, the compressor is turned off. In addition, the driving unit such as the outdoor fan 113 is turned off to finish the operation of the air conditioner.

이상과 같이 본 발명은 실외 유니트에 복수 실내 유니트를 연결한 멀티 공기 조화기에서 실내 유니트의 운전 부하에 대응하여 압축기로부터 실내 유니트에 흐르는 냉매량을 제어하기 때문에 변화하는 실내 유니트의 운전 부하를 정확하게 반영할 수 있다. 따라서 본 발명은 냉난방 동시 운전을 수행 시 냉방 운전의 성능 및 난방 운전의 성능 모두가 만족하게 되어 양호한 운전 성능을 발휘할 수 있다. 본 발명은 실외 온도에 따라 압축기의 압축능력을 설정하고 이 압축기의 토출압력에 따라 실외팬의 속도 제어를 통해 실외 부하에 대응하여 압축기의 능력을 양호하게 유지할 수 있다.

As described above, the present invention accurately reflects the operating load of a changing indoor unit because the amount of refrigerant flowing from the compressor to the indoor unit is controlled in response to the operating load of the indoor unit in the multi-air conditioner in which multiple indoor units are connected to the outdoor unit. Can be. Therefore, the present invention satisfies both the performance of the cooling operation and the performance of the heating operation when performing the simultaneous heating and cooling operation can exhibit a good operating performance. The present invention can set the compression capacity of the compressor according to the outdoor temperature and maintain the capacity of the compressor in response to the outdoor load by controlling the speed of the outdoor fan according to the discharge pressure of the compressor.

Claims (19)

실내측 열교환기를 각각 구비하는 복수 실내 유니트;A plurality of indoor units each having an indoor side heat exchanger; 압축기, 실외측 열교환기, 실외측 전동팽창밸브, 입구가 상기 압축기와 실외측 열교환기 사이에 연결되고 출구가 상기 실내 유니트측에 연결되는 개폐밸브를 구비하는 실외 유니트;An outdoor unit having a compressor, an outdoor heat exchanger, an outdoor electric expansion valve, and an opening / closing valve having an inlet connected between the compressor and an outdoor heat exchanger and an outlet connected to the indoor unit side; 상기 실내 유니트의 운전 부하에 따라 상기 압축기에서 상기 개폐밸브를 통과하여 상기 실내 유니트로 흐르는 상기 압축기의 토출 냉매량과, 상기 압축기에서 상기 실외측 열교환기 및 실외측 전동팽창밸브를 통과하여 상기 실내 유니트로 흐르는 상기 압축기의 토출 냉매량을 제어하는 제어유니트를 포함하고, 상기 제어유니트는 냉방 운전 또는 난방 운전하는 상기 실내 유니트의 운전 부하를 제공하기 위한 실내 제어부와, 상기 실내 제어부로부터 제공받은 운전 부하에 따라 상기 개폐밸브의 개폐와 상기 실외측 전동팽창밸브의 개도를 제어하는 실외 제어부를 포함하며, 상기 실외 제어부는 냉방 주체 냉난방 동시 운전하는 경우 냉방 운전하는 실내 유니트의 성능과 냉방 운전과 난방 운전을 포함한 전체 운전 실내유니트의 성능이 모두 만족되도록 상기 실외측 전동팽창밸브의 개도를 설정하는 것을 특징으로 하는 공기 조화기.The amount of refrigerant discharged from the compressor flowing through the on / off valve from the compressor to the indoor unit according to the operating load of the indoor unit, and from the compressor to the indoor unit through the outdoor heat exchanger and the outdoor electric expansion valve And a control unit for controlling the discharge refrigerant amount of the flowing compressor, wherein the control unit includes an indoor control unit for providing an operation load of the indoor unit for cooling operation or heating operation, and the operation load according to the operation load provided from the indoor control unit. It includes an outdoor control unit for controlling the opening and closing of the on-off valve and the opening degree of the outdoor-side electric expansion valve, wherein the outdoor control unit is the overall operation including the performance of the indoor unit to operate the cooling operation and cooling operation and heating operation in the case of simultaneous operation of the cooling subject air conditioning Even if the performance of the indoor unit is satisfactory An air conditioner, characterized in that for setting the opening degree of the outdoor expansion valve. 삭제delete 제1항에 있어서,  The method of claim 1, 상기 실외측 전동팽창밸브는 상기 실외측 열교환기의 출구에 연결하는 것을 특징으로 하는 공기 조화기.And the outdoor expansion valve is connected to an outlet of the outdoor heat exchanger. 제1항에 있어서,The method of claim 1, 상기 제어유니트는 냉매량을 조절하기 위하여 상기 개폐밸브와 상기 실외측 전동팽창밸브를 제어하는 것을 특징으로 하는 공기 조화기.And the control unit controls the on-off valve and the outdoor electric expansion valve to adjust the amount of refrigerant. 삭제delete 삭제delete 제1항에 있어서,The method of claim 1, 상기 실내 유니트는 실내온도 센서를 더 구비하고, 상기 실내 제어부는 실내 유니트의 실내 온도와 설정온도의 차에 따라 운전 부하를 산출하는 것을 특징으로 하는 공기 조화기.The indoor unit further includes an indoor temperature sensor, wherein the indoor control unit calculates an operating load according to a difference between an indoor temperature and a set temperature of the indoor unit. 제1항에 있어서,The method of claim 1, 상기 실외 제어부는 난방 운전하는 실내 유니트의 총 난방 운전부하와 냉방 운전하는 실내 유니트의 총 냉방 운전부하를 비교하여 비교결과에 따라 상기 실외측 전동팽창밸브의 개도를 설정하는 것을 특징으로 하는 공기 조화기.The outdoor controller compares the total heating operation load of the indoor unit for heating operation with the total cooling operation load of the indoor unit for cooling operation and sets the opening degree of the outdoor expansion valve according to a comparison result. . 실내 온도센서, 실내측 열교환기를 각각 구비하는 복수 실내 유니트;A plurality of indoor units each having an indoor temperature sensor and an indoor side heat exchanger; 압축기, 실외측 열교환기, 실외측 전동팽창밸브, 입구가 상기 압축기와 실외측 열교환기 사이에 연결되고 출구가 상기 실내 유니트측에 연결되는 개폐밸브, 실외팬, 실외온도센서, 압력센서를 구비하는 실외 유니트;A compressor, an outdoor side heat exchanger, an outdoor side expansion valve, an opening valve connected between the compressor and the outdoor side heat exchanger and an outlet connected to the indoor unit side, an outdoor fan, an outdoor temperature sensor, and a pressure sensor Outdoor unit; 상기 실내온도센서를 통해 감지한 실내온도와 설정온도의 차에 따라 상기 실내 유니트의 운전 부하를 산출하고 산출된 운전 부하를 제공하기 위한 실내 제어부; 및An indoor control unit for calculating an operating load of the indoor unit and providing the calculated operating load according to a difference between an indoor temperature and a set temperature detected by the indoor temperature sensor; And 상기 실내 제어부로부터 제공받은 운전 부하에 따라 상기 개폐밸브의 개폐와 상기 실외측 전동팽창밸브의 개도를 제어하며, 상기 실외온도센서를 통해 감지한 실외온도에 따라 상기 압축기의 압축능력을 설정함과 동시에 설정된 압축능력에 따라 상기 압축기를 구동하는 경우 상기 압력센서를 통해 감지한 상기 압축기의 토출 압력에 따라 상기 실외팬의 속도를 제어하는 실외 제어부를 포함하는 것을 특징으로 하는 공기 조화기.It controls the opening and closing of the on-off valve and the opening degree of the outdoor-side expansion valve in accordance with the operating load provided from the indoor control unit, and at the same time setting the compression capacity of the compressor in accordance with the outdoor temperature detected by the outdoor temperature sensor And an outdoor controller for controlling the speed of the outdoor fan according to the discharge pressure of the compressor detected by the pressure sensor when driving the compressor according to a set compression capacity. 제9항에 있어서,10. The method of claim 9, 상기 실외 제어부는 감지한 실외온도가 높을 수록 상기 압축기의 압축능력을 크게 설정하는 것을 특징으로 하는 공기 조화기.And the outdoor controller sets the compressor's compression capacity as the outdoor temperature detected is higher. 제10항에 있어서, The method of claim 10, 상기 실외 제어부는 상기 압축기의 토출 압력을 감소시키기 위해 상기 실외팬의 속도를 증가하고 상기 압축기의 토출 압력을 증가하기 위해 상기 실외팬의 속도를 감소하는 것을 특징으로 하는 공기 조화기.And the outdoor control unit increases the speed of the outdoor fan to decrease the discharge pressure of the compressor and decreases the speed of the outdoor fan to increase the discharge pressure of the compressor. 제11항에 있어서, The method of claim 11, 상기 실외팬의 속도를 감지하기 위한 속도센서를 더 구비하고, 상기 실외 제어부는 상기 속도센서를 통해 감지한 실외팬의 속도에 기초하여 상기 실외팬을 제어하는 것을 특징으로 하는 공기 조화기.And a speed sensor for detecting a speed of the outdoor fan, wherein the outdoor controller controls the outdoor fan based on the speed of the outdoor fan detected by the speed sensor. 압축기, 실외측 열교환기, 실외측 전동팽창밸브, 입구가 상기 압축기와 실외측 열교환기 사이에 연결되고 출구가 상기 실내 유니트측에 연결되는 개폐밸브를 구비하는 실외 유니트, 실내측 열교환기를 각각 구비하는 복수 실내 유니트를 구비하는 공기 조화기의 제어방법에 있어서,An outdoor unit having an compressor, an outdoor side heat exchanger, an outdoor side electric expansion valve, an outdoor unit having an inlet valve connected between the compressor and the outdoor side heat exchanger and an outlet connected to the indoor unit side, and an indoor side heat exchanger, respectively. In a control method of an air conditioner having a plurality of indoor units, 상기 실내 유니트의 운전 부하를 산출하고, 산출된 운전부하에 따라 상기 압축기에서 상기 개폐밸브를 통과하여 상기 실내 유니트로 흐르는 상기 압축기의 토출 냉매량과, 상기 압축기에서 상기 실외측 열교환기 및 실외측 전동팽창밸브를 통과하여 상기 실내 유니트로 흐르는 상기 압축기의 토출 냉매량을 제어하는 것을 특징으로 하는 공기 조화기의 제어방법.Calculating the operating load of the indoor unit, and the amount of refrigerant discharged from the compressor flowing through the on / off valve from the compressor to the indoor unit according to the calculated operating load, and the outdoor heat exchanger and outdoor electric expansion in the compressor; And controlling the amount of refrigerant discharged from the compressor passing through the valve to the indoor unit. 제13항에 있어서,The method of claim 13, 상기 실내 유니트의 운전 부하는 상기 실내 유니트의 실내온도와 설정온도의 차에 따라 산출하는 것을 특징으로 하는 공기 조화기의 제어방법.The operation load of the indoor unit is calculated according to the difference between the room temperature and the set temperature of the indoor unit. 제13항에 있어서, The method of claim 13, 상기 운전 부하는 냉방 주체 냉난방 동시 운전하는 경우 냉방 운전하는 실내 유니트의 총 냉방 운전 부하와 난방 운전하는 실내 유니트의 총 난방 운전부하를 각각 산출하고, 상기 총 난방 운전부하와 상기 총 냉방 운전 부하를 비교하고, 상기 비교 결과에 따라 상기 개폐밸브의 개폐와 상기 실외측 전동팽창밸브의 개도를 제어하는 것을 특징으로 하는 공기 조화기의 제어방법.The operation load calculates the total cooling operation load of the indoor unit for cooling operation and the total heating operation load of the indoor unit for heating operation and compares the total heating operation load with the total cooling operation load, respectively. And controlling the opening and closing of the on-off valve and the opening degree of the outdoor side electric expansion valve according to the comparison result. 제15항에 있어서, The method of claim 15, 상기 실외측 전동팽창밸브의 개도 제어는 냉방 주체 냉난방 동시 운전하는 경우 냉방 운전하는 실내 유니트의 성능과 냉방 운전과 난방 운전을 포함한 전체 운전 실내유니트의 성능이 모두 만족되도록 하는 것을 특징으로 하는 공기 조화기의 제어방법.The opening degree control of the outdoor electric expansion valve is characterized in that the air conditioner to satisfy both the performance of the indoor unit for the cooling operation and the performance of the entire operation indoor unit including the cooling operation and heating operation when the cooling subject air conditioning and heating at the same time Control method. 제13항에 있어서,The method of claim 13, 상기 냉매량 제어가 끝나면, 실외 유니트에 마련된 실외온도센서를 이용하여 실외온도를 감지하고, 감지된 실외온도에 따라 상기 압축기의 압축능력을 설정하는 것을 특징으로 하는 공기 조화기의 제어방법.After the control of the amount of refrigerant, the outdoor temperature sensor using the outdoor temperature sensor provided in the outdoor unit, the control method of the air conditioner, characterized in that for setting the compression capacity of the compressor according to the detected outdoor temperature. 제17항에 있어서,The method of claim 17, 상기 설정된 압축능력에 따라 상기 압축기를 구동하는 경우, 상기 압축기의 토출압력을 감지하고 감지된 압축기의 토출압력에 따라 상기 실외 유니트에 마련된 실외팬의 속도를 제어하는 것을 특징으로 하는 공기조화기의 제어방법.When driving the compressor according to the set compression capacity, the control of the air conditioner, characterized in that for detecting the discharge pressure of the compressor and controlling the speed of the outdoor fan provided in the outdoor unit according to the detected discharge pressure of the compressor Way. 제18항에 있어서, The method of claim 18, 상기 실외팬의 속도 제어는 상기 압축기의 토출 압력과 설정된 기준압력을 비교하고, 비교결과 상기 압축기의 토출압력이 크면 상기 실외팬의 속도를 증가하고 상기 압축기의 토출 압력이 상기 기준압력보다 작으면 상기 압축기의 토출압력 이 상기 기준압력보다 작으면 상기 실외팬의 속도를 감소하는 것을 특징으로 하는 공기조화기의 제어방법.The control of the speed of the outdoor fan compares the discharge pressure of the compressor with the set reference pressure.As a result of the comparison, if the discharge pressure of the compressor is large, the speed of the outdoor fan is increased, and if the discharge pressure of the compressor is less than the reference pressure, And if the discharge pressure of the compressor is smaller than the reference pressure, the speed of the outdoor fan is reduced.
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KR100423362B1 (en) 1995-05-10 2004-07-19 산요덴키가부시키가이샤 Air conditioner

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* Cited by examiner, † Cited by third party
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KR20160087955A (en) * 2015-01-14 2016-07-25 충남대학교산학협력단 Diabetes Model Mice and Preparation Method thereof

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