JP3857274B2 - Air conditioner and control method thereof - Google Patents

Air conditioner and control method thereof Download PDF

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JP3857274B2
JP3857274B2 JP2004016196A JP2004016196A JP3857274B2 JP 3857274 B2 JP3857274 B2 JP 3857274B2 JP 2004016196 A JP2004016196 A JP 2004016196A JP 2004016196 A JP2004016196 A JP 2004016196A JP 3857274 B2 JP3857274 B2 JP 3857274B2
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outdoor
compressor
indoor
unit
air conditioner
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JP2005127687A (en
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宇 顯 金
圭 夏 鄭
鉉 錫 鄭
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Samsung Electronics Co Ltd
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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
    • F24F3/00—Air-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
    • F24F3/06—Air-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
    • F24F3/065—Air-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
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/54—Heating and cooling, simultaneously or alternatively
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/007—Compression 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
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0231—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/029—Control issues
    • F25B2313/0294—Control issues related to the outdoor fan, e.g. controlling speed
    • 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
    • F25B2400/00—General 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
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/027—Compressor control by controlling pressure
    • F25B2600/0271—Compressor control by controlling pressure the discharge pressure
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2501—Bypass valves
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2519—On-off valves
    • 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
    • F25B2700/17—Speeds
    • F25B2700/172—Speeds of the condenser fan
    • 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
    • F25B2700/19—Pressures
    • F25B2700/193—Pressures of the compressor
    • F25B2700/1931—Discharge pressures
    • 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
    • F25B2700/21—Temperatures
    • F25B2700/2104—Temperatures of an indoor room or compartment
    • 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
    • F25B2700/21—Temperatures
    • F25B2700/2106—Temperatures of fresh outdoor air
    • 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
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures 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)

Description

本発明は室外ユニットに複数の室内ユニットを連結し、室内ユニットで暖房運転と冷房運転が同時に行える空気調和機及びその制御方法に関するものである。   The present invention relates to an air conditioner in which a plurality of indoor units are connected to an outdoor unit, and a heating operation and a cooling operation can be performed simultaneously in the indoor unit, and a control method thereof.

従来、マルチ型空気調和機は、通常一つの室外ユニットに複数の室内ユニットを連結して、室内空間に対する空調運転を行う。室外ユニットには圧縮機、室外熱交換器、室外電動膨張バルブが設けられ、室内ユニットには室内熱交換器、室内電動膨張バルブが設けられる。   2. Description of the Related Art Conventionally, a multi-type air conditioner performs an air conditioning operation on an indoor space by usually connecting a plurality of indoor units to one outdoor unit. The outdoor unit is provided 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.

室内ユニットが設置される室内空間の居住者は所望の空調条件を別々に設定することが一般的である。   A resident in an indoor space where an indoor unit is installed generally sets desired air conditioning conditions separately.

季節又は室内空間の環境によって居住者が周囲温度を感じる体感程度が違えるため、全ての室内ユニットに適用する運転モードが統一せず、冷房と暖房を同時に行う場合がある。   Since the degree of sensation in which the occupant feels the ambient temperature differs depending on the season or the environment of the indoor space, the operation mode applied to all indoor units is not unified, and cooling and heating may be performed simultaneously.

冷房と暖房を同時に行う場合、冷房運転の室内ユニットがより多い冷房主体冷暖房運転と、暖房運転の室内ユニットがより多い暖房主体冷暖房運転とがある。   When cooling and heating are performed simultaneously, there are a cooling main cooling / heating operation with more indoor units in the cooling operation and a heating main cooling / heating operation with more indoor units in the heating operation.

冷房と暖房を同時に運転する場合、圧縮機の吐出冷媒は分岐して冷房運転又は暖房運転に対応する室内ユニットに送り出される。すなわち、室外ユニットの圧縮機から吐き出される冷媒は凝縮器として作用する室外熱交換器側に送られ、吐出冷媒の一部は室外熱交換を経ず暖房運転を要求する室内ユニットの室内熱交換器に送られる。   When cooling and heating are simultaneously operated, the refrigerant discharged from the compressor is branched and sent to an indoor unit corresponding to the cooling operation or the heating operation. That is, the refrigerant discharged from the compressor of the outdoor unit is sent to the outdoor heat exchanger that acts as a condenser, and a part of the discharged refrigerant does not undergo outdoor heat exchange and requires a heating operation. Sent to.

冷房運転又は暖房運転を行う室内ユニットでの運転負荷は随時変化する。このため、暖房運転する室内ユニットの台数が冷房運転する室内ユニットの台数より少ないとしても、暖房運転する室内ユニットの運転負荷が冷房運転する室内ユニットの運転負荷よりいくらでも高くなり得る。   The operation load in the indoor unit that performs the cooling operation or the heating operation changes at any time. For this reason, even if the number of indoor units that perform the heating operation is smaller than the number of indoor units that perform the cooling operation, the operation load of the indoor units that perform the heating operation can be as high as the operation load of the indoor units that perform the cooling operation.

ところで、従来の空気調和機は単に室内ユニットの運転台数のみに依存して吐出冷媒を制御したため、室内ユニットの運転負荷を正確に反映して冷媒量を調節することが難しい。   By the way, since the conventional air conditioner controlled the discharged refrigerant depending solely on the number of indoor units operating, it is difficult to accurately adjust the refrigerant amount by accurately reflecting the operating load of the indoor units.

従来の空気調和機は室内ユニットの運転負荷に応じて分岐する冷媒量を適切に調節することができなかったため、冷房運転の室内ユニットに冷媒を過度に供給し、暖房運転の室内ユニットに供給される冷媒は不足し得るので、暖房運転する室内ユニットの暖房性能及び冷房運転する室内ユニットの冷房性能が共に低下する。   Since the conventional air conditioner has not been able to properly adjust the amount of refrigerant branched according to the operating load of the indoor unit, the refrigerant is excessively supplied to the indoor unit for cooling operation and supplied to the indoor unit for heating operation. Therefore, both the heating performance of the indoor unit that performs the heating operation and the cooling performance of the indoor unit that performs the cooling operation are deteriorated.

したがって、本発明の目的は、冷暖房同時運転の際、室内ユニットの運転負荷を考慮して圧縮機から室内ユニットに流れる冷媒の量を適切に調節することができる空気調和機及びその制御方法を提供することにある。   Accordingly, an object of the present invention is to provide an air conditioner capable of appropriately adjusting the amount of refrigerant flowing from the compressor to the indoor unit in consideration of the operation load of the indoor unit during the simultaneous cooling and heating operation, and a control method thereof. There is to do.

前記のような目的を達成するため、本発明は、圧縮機、室外側熱交換器、室外側電動膨張バルブ及び開閉バルブを有する室外ユニットと、室内側熱交換器をそれぞれ有する複数の室内ユニットと、前記圧縮機の吐出冷媒が前記圧縮機から前記開閉バルブを通過して前記室内ユニットに流れるようにする第１冷媒流路と、前記圧縮機の吐出冷媒が前記圧縮機から前記室外側熱交換器及び室外側電動膨張バルブを通過して前記室内ユニットに流れるようにする第２冷媒流路と、前記室内ユニットの運転負荷によって、前記第１冷媒流路により流れる冷媒量と前記第２冷媒流路により流れる冷媒量を制御するための制御ユニットとを含んでなる空気調和機であって、前記制御ユニットは、冷房運転又は暖房運転を行う前記室内ユニットの運転負荷を提供するための室内制御部と、前記室内制御部から受けた運転負荷によって前記開閉バルブの開閉と前記室外側電動膨張バルブの開度を制御する室外制御部とを含み、前記室外制御部は、冷房主体冷暖房同時運転の場合、冷房運転する室内ユニットの性能と冷房運転及び暖房運転を含む全体運転室内ユニットの性能が共に満足されるように、前記室外側電動膨張バルブの開度を設定し、かつ、前記室内ユニットは室内温度センサをさらに含み、前記室内制御部は室内ユニットの室内温度と設定温度の差により運転負荷を算出することを特徴とする空気調和機を提供する。 To achieve the above object, the present invention includes an outdoor unit having a compressor, an outdoor heat exchanger, an outdoor electric expansion valve, and an on-off valve, and a plurality of indoor units each having an indoor heat exchanger. A first refrigerant flow path that allows the refrigerant discharged from the compressor to flow from the compressor through the on-off valve to the indoor unit, and the refrigerant discharged from the compressor from the compressor to the outdoor heat exchange. A second refrigerant flow path that passes through the outdoor unit and the outdoor electric expansion valve and flows to the indoor unit, and an amount of refrigerant flowing through the first refrigerant flow path and the second refrigerant flow due to an operating load of the indoor unit. an air conditioner comprising a control unit for controlling the amount of coolant flowing through the road, the control unit, the operating load of the indoor unit which performs cooling operation or heating operation An indoor control unit for providing, and an outdoor control unit that controls opening and closing of the open / close valve and an opening degree of the outdoor electric expansion valve according to an operating load received from the indoor control unit, wherein the outdoor control unit is a cooling unit In the case of the main cooling and heating simultaneous operation, the opening degree of the outdoor electric expansion valve is set so that both the performance of the indoor unit that performs the cooling operation and the performance of the overall operation indoor unit including the cooling operation and the heating operation are satisfied, and The indoor unit further includes an indoor temperature sensor, and the indoor control unit calculates an operating load based on a difference between the indoor temperature of the indoor unit and a set temperature .

前記開閉バルブは、入口が前記圧縮機と室外側熱交換器間に連結され、出口が前記室内ユニット側に連結される。   The opening / closing valve has an inlet connected between the compressor and the outdoor heat exchanger, and an outlet connected to the indoor unit side.

前記室外側電動膨張バルブは前記室外側熱交換器の出口に連結される。   The outdoor electric expansion valve is connected to an outlet of the outdoor heat exchanger.

前記制御ユニットは、前記第１冷媒流路又は前記第２冷媒流路により流れる冷媒量を調節するため、前記開閉バルブと前記室外側電動膨張バルブを制御する。 The control unit controls the open / close valve and the outdoor electric expansion valve in order to adjust the amount of refrigerant flowing through the first refrigerant channel or the second refrigerant channel .

前記室外制御部は、暖房運転する室内ユニットの総暖房運転負荷と冷房運転する室内ユニットの総冷房運転負荷を比較し、その比較結果によって前記室外側電動膨張バルブの開度を設定する。   The outdoor control unit compares the total heating operation load of the indoor unit that performs the heating operation with the total cooling operation load of the indoor unit that performs the cooling operation, and sets the opening degree of the outdoor electric expansion valve according to the comparison result.

また、本発明は、圧縮機、室外側熱交換器、室外側電動膨張バルブ、開閉バルブ、室外ファン、室外温度センサ及び圧力センサを有する室外ユニットと、室内温度センサ、室内側熱交換器をそれぞれ有する複数の室内ユニットと、前記圧縮機の吐出冷媒が前記圧縮機から前記開閉バルブを通過して前記室内ユニットに流れるようにする第１冷媒流路と、前記圧縮機の吐出冷媒が前記圧縮機から前記室外側熱交換器及び室外側電動膨張バルブを通過して前記室内ユニットに流れるようにする第２冷媒流路と、前記室内温度センサにより感知した室内温度と設定温度の差によって前記室内ユニットの運転負荷を算出し、算出された運転負荷を提供するための室内制御部と、前記室内制御部から受けた運転負荷によって前記開閉バルブの開閉と前記室外側電動膨張バルブの開度を制御し、前記室外温度センサにより感知した室外温度によって前記圧縮機の圧縮能力を設定し、設定された圧縮能力によって前記圧縮機を駆動する場合、前記圧力センサにより感知した前記圧縮機の吐出圧力によって前記室外ファンの速度を制御する室外制御部とを含んでなる空気調和機を提供する。   The present invention also includes an outdoor unit having a compressor, an outdoor heat exchanger, an outdoor electric expansion valve, an open / close valve, an outdoor fan, an outdoor temperature sensor, and a pressure sensor, an indoor temperature sensor, and an indoor heat exchanger. A plurality of indoor units, a first refrigerant flow path that allows the refrigerant discharged from the compressor to flow from the compressor through the on-off valve to the indoor unit, and the refrigerant discharged from the compressor is the compressor From the outdoor heat exchanger and the outdoor electric expansion valve to flow to the indoor unit, and the indoor unit by the difference between the indoor temperature detected by the indoor temperature sensor and the set temperature An indoor control unit for calculating the operation load of the vehicle, and providing the calculated operation load; and opening and closing of the open / close valve according to the operation load received from the indoor control unit The opening degree of the outer electric expansion valve is controlled, the compression capacity of the compressor is set according to the outdoor temperature sensed by the outdoor temperature sensor, and when the compressor is driven by the set compression capacity, it is sensed by the pressure sensor. And an outdoor control unit that controls the speed of the outdoor fan by the discharge pressure of the compressor.

前記室外制御部は、感知した室外温度が高いほど前記圧縮機の圧縮能力を高く設定する。前記室外制御部は、前記圧縮機の吐出圧力を減少させるため、前記室外ファンの速度を増大させ、前記圧縮機の吐出圧力を増大させるため、前記室外ファンの速度を減少させる。   The outdoor control unit sets the compression capacity of the compressor higher as the detected outdoor temperature is higher. 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.

前記空気調和機は前記室外ファンの速度を感知するための速度センサをさらに含み、前記室外制御部は前記速度センサにより感知した室外ファンの速度に基づいて前記室外ファンを制御する。   The air conditioner further includes a speed sensor for sensing the speed of the outdoor fan, and the outdoor control unit controls the outdoor fan based on the speed of the outdoor fan sensed by the speed sensor.

また、本発明は、圧縮機、室外側熱交換器、室外側電動膨張バルブ及び開閉バルブを有する室外ユニットと、室内側熱交換器をそれぞれ有する複数の室内ユニットと、前記圧縮機の吐出冷媒が前記圧縮機から前記開閉バルブを通過して前記室内ユニットに流れるようにする第１冷媒流路と、前記圧縮機の吐出冷媒が前記圧縮機から前記室外側熱交換器及び室外側電動膨張バルブを通過して前記室内ユニットに流れるようにする第２冷媒流路とを含む空気調和機の制御方法において、前記室内ユニットの運転負荷を前記室内ユニットの室内温度と設定温度の差によって算出し、算出された運転負荷によって、冷房主体冷暖房同時運転の場合、冷房運転する室内ユニットの総冷房運転負荷と暖房運転する室内ユニットの総暖房運転負荷をそれぞれ算出し、前記総暖房運転負荷と前記総冷房運転負荷を比較し、この比較結果によって前記開閉バルブの開閉と前記室外側電動膨張バルブの開度を制御することを特徴とする空気調和機の制御方法を提供する。 The present invention also provides an outdoor unit having a compressor, an outdoor heat exchanger, an outdoor electric expansion valve and an opening / closing valve, a plurality of indoor units each having an indoor heat exchanger, and a refrigerant discharged from the compressor. A first refrigerant flow path that allows the compressor to pass through the open / close valve and flow to the indoor unit; and a refrigerant discharged from the compressor passes from the compressor to the outdoor heat exchanger and the outdoor electric expansion valve. In a control method of an air conditioner including a second refrigerant flow path that passes through and flows to the indoor unit, an operation load of the indoor unit is calculated by a difference between a room temperature of the indoor unit and a set temperature, In the case of simultaneous cooling and cooling operation, the total cooling operation load of the indoor unit that performs cooling operation and the total heating operation load of the indoor unit that performs heating operation are Out, comparing the total cooling operation load and the total heating operation load, the control method of an air conditioner and controls the opening of the chamber outer electric expansion valve and the opening and closing of the opening and closing valve by the comparison result I will provide a.

前記室外側電動膨張バルブの開度制御は、冷房主体冷暖房同時運転の場合、冷房運転する室内ユニットの性能と冷房運転及び暖房運転を含む全体運転室内ユニットの性能が共に満足されるようにする。   The opening degree control of the outdoor electric expansion valve is such that, in the case of the cooling main cooling / heating simultaneous operation, the performance of the indoor unit that performs the cooling operation and the performance of the entire operation indoor unit including the cooling operation and the heating operation are satisfied.

前記冷媒量の制御が終わると、室外ユニットに設けられた室外温度センサにより室外温度を感知し、感知された室外温度によって前記圧縮機の圧縮能力を設定する。   When the control of the refrigerant amount is finished, the outdoor temperature is detected by an outdoor temperature sensor provided in the outdoor unit, and the compression capacity of the compressor is set according to the detected outdoor temperature.

前記設定された圧縮能力によって前記圧縮機を駆動する場合、前記圧縮機の吐出圧力を感知し、感知された圧縮機の吐出圧力によって、前記室外ユニットに設けられた室外ファンの速度を制御する。   When the compressor is driven by 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 by the sensed discharge pressure of the compressor.

前記室外ファンの速度制御は、前記圧縮機の吐出圧力と設定された基準圧力を比較し、比較結果、前記圧縮機の吐出圧力が高いと前記室外ファンの速度を増大させ、前記圧縮機の吐出圧力が前記基準圧力より低いと前記室外ファンの速度を低下させる。   The speed control of the outdoor fan compares the discharge pressure of the compressor with a set reference pressure, and as a result of comparison, if the discharge pressure of the compressor is high, the speed of the outdoor fan is increased, and the discharge of the compressor If the pressure is lower than the reference pressure, the speed of the outdoor fan is reduced.

以上のように、本発明は、室外ユニットに複数の室内ユニットが連結されたマルチ型空気調和機において、室内ユニットの運転負荷に応じて、圧縮機から室内ユニットに流れる冷媒量を制御するため、変化する室内ユニットの運転負荷を正確に反映することができる。したがって、本発明は、冷暖房同時運転の際、冷房運転の性能及び暖房運転の性能が共に満足されて良好な運転性能を発揮することができる。本発明は、室外温度に応じて圧縮機の圧縮能力を設定し、この圧縮機の吐出圧力によって、室外ファンの速度制御により室外負荷に対応して圧縮機の能力を良好に維持することができる。   As described above, in the multi-type air conditioner in which a plurality of indoor units are connected to an outdoor unit, the present invention controls the amount of refrigerant flowing from the compressor to the indoor unit according to the operating load of the indoor unit. The operating load of the changing indoor unit can be accurately reflected. Therefore, according to the present invention, in the simultaneous cooling and heating operation, both the cooling operation performance and the heating operation performance are satisfied, and a favorable operation performance can be exhibited. The present invention sets the compression capacity of the compressor according to the outdoor temperature, and can maintain the capacity of the compressor well corresponding to the outdoor load by controlling the speed of the outdoor fan by the discharge pressure of the compressor. .

以下、本発明の好ましい実施例を添付図面に基づいて詳細に説明する。   Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

本発明は室外ユニットに複数の室内ユニットが連結されるマルチ型空気調和機に適用する。   The present invention is applied to a multi-type air conditioner in which a plurality of indoor units are connected to an outdoor unit.

本発明による空気調和機は、図１に示すように、室外ユニット１００と、四つの室内ユニット２００ａ、２００ｂ、２００ｃ、２００ｄと、室外ユニットと前記室内ユニット間に連結され、冷媒の流れを転換する冷媒転換回路３００とを含む。   As shown in FIG. 1, the air conditioner according to the present invention is connected to an outdoor unit 100, four indoor units 200a, 200b, 200c, and 200d, between the outdoor unit and the indoor unit, and changes the flow of the refrigerant. A refrigerant conversion circuit 300.

室外ユニット１００は、室外側熱交換器１０１ａ、１０１ｂと、室外ファン１１３と、室外熱交換器１０１ａ、１０１ｂの出口に連結された室外側電動膨張バルブ１０２と、室外側電動膨張バルブに並列に連結された開閉バルブ１１１及びチェックバルブ１１２と、容量可変型圧縮機１０３ａ、１０３ｂと、四方バルブ１０４と、圧力センサ１０５と、レシーバー１０６と、アキュミュレータ１０７と、圧縮機の吐出冷媒を室外側熱交換器を経なく迂回させて暖房運転の室内ユニットに送るための開閉バルブ１０９及びチェックバルブ１１０とを含む。   The outdoor unit 100 is connected in parallel to the outdoor heat exchangers 101a and 101b, the outdoor fan 113, the outdoor electric expansion valve 102 connected to the outlets of the outdoor heat exchangers 101a and 101b, and the outdoor electric expansion valve. The open / close valve 111 and the check valve 112, the variable displacement compressors 103a and 103b, the four-way valve 104, the pressure sensor 105, the receiver 106, the accumulator 107, and the refrigerant discharged from the compressor are subjected to outdoor heat exchange. It includes an on-off valve 109 and a check valve 110 for bypassing and passing to the indoor unit for heating operation.

室外ユニット１００は、室外温度を感知するための室外温度センサ１０８と、室外ファンの速度を感知するための速度センサ１１４と、圧縮機から吐き出される冷媒の吐出圧力を感知するための圧力センサ１０５とを含む。さらに、本発明の空気調和機は室外ユニットを制御するための室外制御部１２０を含む。   The outdoor unit 100 includes an outdoor temperature sensor 108 for sensing the outdoor temperature, a speed sensor 114 for sensing the speed of the outdoor fan, and a pressure sensor 105 for sensing the discharge pressure of the refrigerant discharged from the compressor. including. Furthermore, the air conditioner of the present invention includes an outdoor control unit 120 for controlling the outdoor unit.

室外制御部１２０は後述する室内制御部から受けた室内ユニットの運転負荷に対する情報を用いて室外側電動膨張バルブ１０２の開度を制御して、暖房運転の室内ユニットと冷房運転の室内ユニットに送られる冷媒を適切に調節し、室外温度センサ１０８、速度センサ１１４、圧力センサ１０５を介して受けた情報を用いて圧縮機１０３ａ、１０３ｂと室外ファン１１３を制御する。   The outdoor control unit 120 controls the opening degree of the outdoor electric expansion valve 102 using information on the operation load of the indoor unit received from the indoor control unit, which will be described later, and sends it to the indoor unit for heating operation and the indoor unit for cooling operation. The refrigerant is appropriately adjusted, and the compressors 103a and 103b and the outdoor fan 113 are controlled using information received through the outdoor temperature sensor 108, the speed sensor 114, and the pressure sensor 105.

各室内ユニット２００ａ、２００ｂ、２００ｃ、２００ｄは、室内側熱交換器２０１ａ、２０１ｂ、２０１ｃ、２０１ｄと、室内側電動膨張バルブ２０２ａ、２０２ｂ、２０２ｃ、２０２ｄと、室内温度を感知するための室内温度センサ２０３ａ、２０３ｂ、２０３ｃ、２０３ｄとを含む。   Each indoor unit 200a, 200b, 200c, 200d includes an indoor side heat exchanger 201a, 201b, 201c, 201d, an indoor side electric expansion valve 202a, 202b, 202c, 202d, and an indoor temperature sensor for sensing the indoor temperature. 203a, 203b, 203c, 203d.

本発明の空気調和機は、各室内ユニットを制御するための室内制御部２１０ａ、２１０ｂ、２０１ｃ、２１０ｄを含む。各室内制御部は、室内温度センサ２０３ａ、２０３ｂ、２０３ｃ、２０３ｄにより感知した室内温度と、機能キー又はリモコンを介して使用者により設定された設定温度の差によって当該室内ユニットの運転負荷を算出し、算出された運転負荷に対する情報を室外制御部１２０にそれぞれ提供する。また、室内制御部は、室外制御部に連繋して室内側電動膨張バルブ２０２ａ、２０２ｂ、２０２ｃ、２０２ｄと室内ファン（図示せず）を制御する。   The air conditioner of the present invention includes indoor control units 210a, 210b, 201c, and 210d for controlling each indoor unit. Each indoor control unit calculates the operating load of the indoor unit based on the difference between the indoor temperature sensed by the indoor temperature sensors 203a, 203b, 203c, and 203d and the set temperature set by the user via the function key or the remote controller. Information on the calculated driving load is provided to the outdoor control unit 120, respectively. The indoor control unit controls the indoor side electric expansion valves 202a, 202b, 202c, and 202d and the indoor fan (not shown) linked to the outdoor control unit.

冷媒転換回路３００は、室外ユニット１００と各室内ユニット２００ａ、２００ｂ、２００ｃ、２００ｄ間の高圧ガス管（ＨＰＰ）に設けられる高圧ガスバルブ３０１ａ、３０１ｂ、３０１ｃ、３０１ｄと、低圧ガス管（ＬＰＰ）上にそれぞれ設けられる低圧ガスバルブ３０２ａ、３０２ｂ、３０２ｃ、３０２ｄと、各室内ユニット２００ａ、２００ｂ、２００ｃ、２００ｄから室外ユニット１００側に排出される共通液圧ライン上に設けられる電動膨張バルブ３０３とを含む。冷媒転換回路を構成するそれぞれのバルブは室外制御部の制御により作動する。   The refrigerant conversion circuit 300 is provided on the high pressure gas valves 301a, 301b, 301c, 301d provided in the high pressure gas pipe (HPP) between the outdoor unit 100 and each of the indoor units 200a, 200b, 200c, 200d, and the low pressure gas pipe (LPP). Low pressure gas valves 302a, 302b, 302c, 302d provided respectively, and an electric expansion valve 303 provided on a common hydraulic pressure line discharged from the indoor units 200a, 200b, 200c, 200d to the outdoor unit 100 side. Each valve which comprises a refrigerant | coolant conversion circuit act | operates by control of an outdoor control part.

室外ユニット１００の四方バルブ１０４の一端と冷媒転換回路３００の高圧ガスバルブ３０１ａ、３０１ｂ、３０１ｃ、３０１ｄは高圧ガス管（ＨＰＰ）を介して連結される。また、室外ユニット１００のアキュミュレータ１０７と冷媒転換回路３００の低圧ガスバルブ３０２ａ、３０２ｂ、３０２ｃ、３０２ｄは低圧ガス管（ＬＰＰ）を介して連結される。   One end of the four-way valve 104 of the outdoor unit 100 and the high-pressure gas valves 301a, 301b, 301c, 301d of the refrigerant conversion circuit 300 are connected via a high-pressure gas pipe (HPP). Further, the accumulator 107 of the outdoor unit 100 and the low pressure gas valves 302a, 302b, 302c, and 302d of the refrigerant conversion circuit 300 are connected via a low pressure gas pipe (LPP).

室外ユニット１００の室外側熱交換器１０１ａ、１０１ｂと冷媒転換回路３００間にはリターン配管（ＲＰ）が設けられ、このリターン配管（ＲＰ）には室外側電動膨張バルブ１０２が設けられる。この電動膨張バルブ１０２に並列に連結された開閉バルブ１１１は流量調整用バルブである。   A return pipe (RP) is provided between the outdoor heat exchangers 101a and 101b of the outdoor unit 100 and the refrigerant conversion circuit 300, and an outdoor electric expansion valve 102 is provided in the return pipe (RP). The open / close valve 111 connected in parallel to the electric expansion valve 102 is a flow rate adjusting valve.

このリターン配管（ＨＰ）と各室内側熱交換器２０１ａ、２０１ｂ、２０１ｃ、２０１ｄの配管ＥＰ１、ＥＰ２、ＥＰ３、ＥＰ４が接続される。   This return pipe (HP) is connected to the pipes EP1, EP2, EP3, and EP4 of the indoor heat exchangers 201a, 201b, 201c, and 201d.

以下、冷房主体冷暖房同時運転の過程を説明する。   Hereinafter, the process of the cooling-main cooling / heating simultaneous operation will be described.

図２は一つの室内ユニット２００ａが暖房運転モードに設定され、残りの三つの室内ユニット２００ｂ、２００ｃ、２００ｄが冷房運転モードに設定された場合を示す。図２に示すように、まず圧縮機１０３ａ、１０３ｂを駆動し、室外側電動膨張バルブ１０２を所定の開度に開放し、開閉バルブ１０９を開放し、暖房運転の室内ユニット側の高圧ガスバルブ３０１ａは開放し、冷房運転の室内ユニット側の高圧ガスバルブ３０１ｂ、３０１ｃ、３０１ｄは閉鎖し、暖房運転の室内ユニット側の低圧ガスバルブ３０２ａは閉鎖し、冷房運転の室内ユニット側の低圧ガスバルブ３０２ｂ、３０２ｃ、３０２ｄは開放する。   FIG. 2 shows a case where one indoor unit 200a is set to the heating operation mode and the remaining three indoor units 200b, 200c, and 200d are set to the cooling operation mode. As shown in FIG. 2, first, the compressors 103a and 103b are driven, the outdoor electric expansion valve 102 is opened to a predetermined opening degree, the open / close valve 109 is opened, and the high-pressure gas valve 301a on the indoor unit side in the heating operation is The high pressure gas valves 301b, 301c, 301d on the indoor unit side in the cooling operation are closed, the low pressure gas valve 302a on the indoor unit side in the heating operation is closed, and the low pressure gas valves 302b, 302c, 302d on the indoor unit side in the cooling operation are closed. Open.

圧縮機１０３ａ、１０３ｂから吐き出される冷媒は室外側熱交換器１０１ａ、１０１ｂにより熱交換し、室外側電動膨張バルブ１０２を通過した後、冷房運転の室内ユニット側に送られる。この際、圧縮機１０３ａ、１０３ｂから吐き出される一部の冷媒は開閉バルブ１０９とチェックバルブ１１０を経た後、暖房運転する室内ユニットに送られる。   The refrigerant discharged from the compressors 103a and 103b exchanges heat with the outdoor heat exchangers 101a and 101b, passes through the outdoor electric expansion valve 102, and is sent to the indoor unit side in the cooling operation. At this time, a part of the refrigerant discharged from the compressors 103a and 103b passes through the on-off valve 109 and the check valve 110, and then is sent to the indoor unit that performs the heating operation.

室外制御部１２０は、暖房運転する室内ユニットの総暖房運転負荷と冷房運転する室内ユニットの総冷房運転負荷を考慮して室外側電動膨張バルブ１０２の開度を設定することにより、冷房運転の室内ユニットと暖房運転の室内ユニットに送られる冷媒量を調節する。   The outdoor control unit 120 sets the opening of the outdoor electric expansion valve 102 in consideration of the total heating operation load of the indoor unit that performs the heating operation and the total cooling operation load of the indoor unit that performs the cooling operation. The amount of refrigerant sent to the unit and the indoor unit for heating operation is adjusted.

これについて図３及び図４を参照して説明する。   This will be described with reference to FIGS.

室外制御部１２０は、冷房運転の室内ユニットの運転負荷と暖房運転の室内ユニットの運転負荷を考慮して室外電動膨張バルブの開度を制御する。   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 in the cooling operation and the operation load of the indoor unit in the heating operation.

例えば、各室内制御部から受けた暖房運転の室内ユニットに対する総暖房運転負荷が冷房運転の室内ユニットに対する総冷房運転負荷より大きいと、室外側電動膨張バルブ１０２の開度を第１設定開度値に設定する。ここで、第１設定開度値は試験により得るデータとして予め記憶し、図３に示すように、室内温度２０℃（湿度除外温度）／１５℃（湿度含み温度）であり、室外温度−５℃で試験すると、室外側電動膨張バルブ１０２に対する第１設定開度値は５０％（Ａ参照）に設定するとき、冷房運転の室内ユニットの性能と全体運転室内ユニットの性能（暖房運転する室内ユニットと冷房運転する室内ユニットを含む）が共に最適であることが分る。   For example, when the total heating operation load for the indoor unit in the heating operation received from each indoor control unit is larger than the total cooling operation load for the indoor unit in the cooling operation, the opening degree of the outdoor electric expansion valve 102 is set to the first set opening value. Set to. Here, the first set opening value is stored in advance as data obtained by the test, and as shown in FIG. 3, the indoor temperature is 20 ° C. (humidity exclusion temperature) / 15 ° C. (temperature including humidity), and the outdoor temperature is −5. When tested at ° 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 in the cooling operation and the performance of the indoor unit in the overall operation (the indoor unit in the heating operation) And indoor units that are in cooling operation) are both optimal.

ほかの例として、暖房運転の室内ユニットに対する総暖房運転負荷が冷房運転の室内ユニットに対する総冷房運転負荷より高くないと、室外側電動膨張バルブ１０２の開度を第２設定開度値に設定する。ここで、第２設定開度値は試験により得るデータとして予め記憶し、図４に示すように、室内温度２７℃（湿度除外温度）／１９．５℃（湿度含み温度）であり、室外温度１５℃（湿度除外温度）／１０℃（湿度含み温度）で試験すると、室外側電動膨張バルブ１０２に対する第２設定開度値は３５％（Ｂ）に設定するとき、冷房運転の室内ユニットの性能と全体運転室内ユニットの性能（暖房運転する室内ユニットと冷房運転する室内ユニットを含む）が共に最適であることが分る。   As another example, if the total heating operation load on the indoor unit in the heating operation is not higher than the total cooling operation load on the indoor unit in 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 by the test, and as shown in FIG. 4, the indoor temperature is 27 ° C. (humidity exclusion temperature) /19.5° C. (temperature including humidity), and the outdoor temperature When tested at 15 ° C. (humidity exclusion temperature) / 10 ° C. (temperature including humidity), when the second set opening value for the outdoor electric expansion valve 102 is set to 35% (B), the performance of the indoor unit in the cooling operation It can be seen that the performance of the entire operation indoor unit (including the indoor unit for heating operation and the indoor unit for cooling operation) is optimal.

吐出冷媒に対する制御が終わると、室外制御部１２０は室外温度と設定された基準温度を比較し、比較結果によって圧縮機の圧縮能力を設定し、設定された圧縮能力に基づいて圧縮機を駆動する。例えば、室外温度が基準温度より高いと、第１圧縮能力によって圧縮機を駆動し、室外温度が基準温度より高くないと、第１圧縮能力より小さい第２圧縮能力によって圧縮機を駆動する。これは室外温度によって圧縮機の圧縮能力を設定するためである。   When the control on the discharged refrigerant is finished, the outdoor control unit 120 compares the outdoor temperature with the set reference temperature, sets the compression capacity of the compressor based on the comparison result, and drives the compressor based on the set compression capacity. . For example, when the outdoor temperature is higher than the reference temperature, the compressor is driven by the first compression capacity, and when the outdoor temperature is not higher than the reference temperature, the compressor is driven by the second compression capacity that is smaller than the first compression capacity. This is to set the compression capacity of the compressor according to the outdoor temperature.

圧縮機の圧縮能力に対する設定が終わると、室外制御部１２０は設定された圧縮能力によって圧縮機を駆動する状態で圧縮機の吐出圧力と設定された基準圧力を比較し、この比較結果によって室外ファンの速度を制御する。例えば、圧縮機の吐出圧力が基準圧力の下限値と上限値間に属すると、現在の圧縮機運転を維持する。反面、圧縮機の吐出圧力が基準圧力の上限値以上であると、室外ファンの速度を増大させて熱交換能力を高めることで吐出圧力を低下させ、基準圧力の下限値以下であると、室外ファンの速度を減少させて熱交換能力を低めることで吐出圧力を高める。よって圧縮機の吐出圧力が基準圧力を満足する。   When the setting for the compression capacity of the compressor is completed, the outdoor control unit 120 compares the discharge pressure of the compressor with the set reference pressure in a state where the compressor is driven with the set compression capacity, and the outdoor fan is determined based on the comparison result. To control the speed. For example, when 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 equal to or higher than the upper limit value of the reference pressure, the discharge pressure is reduced by increasing the speed of the outdoor fan to increase the heat exchange capacity, and if the discharge pressure is lower than the lower limit value of the reference pressure, The discharge pressure is increased by reducing the fan speed and lowering the heat exchange capacity. Therefore, the discharge pressure of the compressor satisfies the reference pressure.

前記のような構成を有する本発明による空気調和機の制御方法を添付図面に基づいて説明する。   The control method of the air conditioner by the present invention which has the above composition is explained based on an accompanying drawing.

図５Ａ及び図５Ｂは本発明による空気調和機の制御方法を示すフローチャートで、一つの室内ユニット２００ａに対して暖房運転を行い、三つの室内ユニット２００ｂ、２００ｃ、２００ｄに対して冷房運転を行う冷房主体冷暖房同時運転の場合を示す。   FIG. 5A and FIG. 5B are flowcharts showing a control method for an air conditioner according to the present invention, in which a heating operation is performed on one indoor unit 200a and a cooling operation is performed on three indoor units 200b, 200c, and 200d. The case of the main cooling and heating simultaneous operation is shown.

まず、空気調和機に電源が供給されると、室外制御部１２０は初期化を行う（段階１０）。初期化課程は、圧縮機を駆動し、各バルブの作動を制御するなど、予め決められた制御プログラムにしたがって行われる処理動作を言う。   First, when power is supplied to the air conditioner, the outdoor control unit 120 performs initialization (step 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.

初期化が終わると、各室内制御部では、暖房運転モード及び冷房運転モードのなかで当該室内ユニットに対して設定された運転モードを区別するための運転モード信号を室外制御部に提供する。室外制御部１２０は各室内制御部から運転モード信号を受信し、各室内ユニットの運転モードを認識する（段階１２）。   When the initialization is completed, each indoor control unit provides an outdoor control unit with an operation mode signal for distinguishing the operation mode set for the indoor unit in the heating operation mode and the cooling operation mode. The outdoor control unit 120 receives the operation mode signal from each indoor control unit and recognizes the operation mode of each indoor unit (step 12).

室外制御部１２０は、冷房運転に設定された室内ユニットの運転台数（Ｎｃ）が暖房運転に設定された室内ユニットの運転台数（Ｎｈ）より多いかを判断する（段階１４）。   The outdoor control unit 120 determines whether the number of operating indoor units (Nc) set to the cooling operation is larger than the operating number (Nh) of indoor units set to the heating operation (step 14).

冷房運転に設定された室内ユニットの運転台数（Ｎｃ）が暖房運転に設定された室内ユニットの運転台数（Ｎｈ）より多くない場合、当該運転モードによって空気調和機を運転する（段階１５）。   When the number of operating indoor units (Nc) set to the cooling operation is not larger than the operating number (Nh) of indoor units set to the heating operation, the air conditioner is operated in the operation mode (step 15).

冷房運転に設定された室内ユニットの運転台数（Ｎｃ）が暖房運転に設定された室内ユニットの運転台数（Ｎｈ）より多い場合、冷房主体冷暖房同時運転に合わせて四方バルブ１０４を駆動し、開閉バルブ１０９を開放する。したがって、圧縮機から吐き出される冷媒は凝縮器として作用する室外側熱交換器１０１ａ、１０１ｂと室外側電動膨張バルブ１０２を経て冷房運転する室内ユニットに送られ、一部の吐出冷媒は室外側熱交換器１０１ａ、１０１ｂを経ずに迂回して、暖房運転する室内ユニットに送られる（段階１６）。   When the number of indoor units operated (Nc) set to the cooling operation is larger than the number of indoor units (Nh) set to the heating operation, the four-way valve 104 is driven in accordance with the cooling main cooling / heating simultaneous operation, and the open / close valve 109 is released. Therefore, the refrigerant discharged from the compressor is sent to the indoor unit that performs the cooling operation via the outdoor heat exchangers 101a and 101b that act as condensers and the outdoor electric expansion valve 102, and a part of the discharged refrigerant is exchanged with the outdoor heat. It bypasses without passing through the vessels 101a and 101b, and is sent to the indoor unit that performs the heating operation (step 16).

各室内制御部においては、室内温度と設定温度の差に基づいて当該室内ユニット、つまり暖房室内ユニット又は冷房室内ユニットでの運転負荷を算出し、算出された運転負荷に対する情報を室外制御部に提供する。室外制御部１２０は各室内制御部から当該室内ユニットに対する運転負荷を受ける（段階１８）。   Each indoor control unit calculates the operating load of the 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 information on the calculated operating load to the outdoor control unit. To do. The outdoor control unit 120 receives an operation load on each indoor unit from each indoor control unit (step 18).

室外制御部１２０は、各室内制御部から受けた暖房運転の室内ユニットに対する総暖房運転負荷（ＬＴｈ）が冷房運転の室内ユニットに対する総冷房運転負荷（ＬＴｃ）より高いかを判断し（段階２０）、総暖房運転負荷（ＬＴｈ）が高いと、室外側電動膨張バルブ１０２の開度（Ｖｏ）を第１設定開度値（Ｖ１）に設定する（段階２２）。これとは異なり、各室内制御部から受けた暖房運転の室内ユニットに対する総暖房運転負荷（ＬＴｈ）が冷房運転の室内ユニットに対する総冷房運転負荷（ＬＴｃ）より高くないと、室外側電動膨張バルブ１０２の開度（Ｖｏ）を第２設定開度値（Ｖ２）に設定する（段階２４）。ここで、第１設定開度値（Ｖ１）と第２設定開度値（Ｖ２）は試験により得るデータとして予め記憶する。   The outdoor control unit 120 determines whether the total heating operation load (LTh) for the indoor unit in the heating operation received from each indoor control unit is higher than the total cooling operation load (LTc) for the indoor unit in the cooling operation (step 20). When the total heating operation load (LTh) is high, the opening degree (Vo) of the outdoor electric expansion valve 102 is set to the first set opening degree value (V1) (step 22). On the other hand, if the total heating operation load (LTh) for the indoor unit in the heating operation received from each indoor control unit is not higher than the total cooling operation load (LTc) for the indoor unit in the cooling operation, the outdoor electric expansion valve 102 Is set to the second set opening value (V2) (step 24). Here, the first set opening value (V1) and the second set opening value (V2) are stored in advance as data obtained by the test.

室外制御部１２０は第１設定開度値（Ｖ１）又は第２設定開度値（Ｖ２）によって室外側電動膨張バルブを駆動して開度制御を行う（段階２６）。   The outdoor control unit 120 controls the opening by driving the outdoor electric expansion valve with the first set opening value (V1) or the second set opening value (V2) (step 26).

室外側電動膨張バルブの開度に対する制御が終わると、室外温度センサ１０８により室外感知信号を受けて室外温度を認識する（段階２８）。   When the control over the opening degree of the outdoor electric expansion valve is finished, the outdoor temperature sensor 108 receives the outdoor sensing signal and recognizes the outdoor temperature (step 28).

室外制御部１２０は感知された室外温度（Ｍｏ）が設定された基準温度（Ｍｒ）より高いかを判断する（段階３０）。本実施例において、基準温度（Ｍｒ）は０℃に設定する。   The outdoor controller 120 determines whether the sensed outdoor temperature (Mo) is higher than a set reference temperature (Mr) (step 30). In this embodiment, the reference temperature (Mr) is set to 0 ° C.

室外温度（Ｍｏ）が基準温度（Ｍｒ）より高いと、室外制御部１２０は圧縮機の圧縮能力（ＣＰ）を第１圧縮能力（ＣＰ１）に設定する（段階３２）。   If the outdoor temperature (Mo) is higher than the reference temperature (Mr), the outdoor control unit 120 sets the compression capacity (CP) of the compressor to the first compression capacity (CP1) (step 32).

室外制御部１２０は設定された第１圧縮能力によって圧縮機を駆動し（段階３４）、圧力センサ１０５により冷媒吐出圧力感知信号を受けて吐出冷媒の圧力を認識する（段階３６）。   The outdoor control unit 120 drives the compressor with the set first compression capacity (step 34), receives the refrigerant discharge pressure sensing signal from the pressure sensor 105, and recognizes the pressure of the discharged refrigerant (step 36).

室外制御部１２０は感知された吐出圧力（Ｐｄ）が第１基準圧力の下限値（Ｐ１）と上限値（Ｐ２）間に属するかを判断し（段階３８）、その判断結果、感知された吐出圧力（Ｐｄ）が第１基準圧力の下限値（Ｐ１）以下であるか又は上限値（Ｐ２）以上であると、吐出圧力を調節するため、室外ファン１１３の速度を調節する（段階４０）。圧縮機の吐出圧力が上限値以上であると、室外ファンの速度を増大させて熱交換能力を高めることで吐出圧力を低下させ、下限値以下であると、室外ファンの速度を減少させて熱交換能力を低めることで吐出圧力を高める。この際、室外制御部は速度センサにより感知した室外ファンの速度に基づいて室外ファンを制御する。室外ファンの調節が終わると、段階３６に進む。   The outdoor control unit 120 determines whether the detected discharge pressure (Pd) is between the lower limit value (P1) and the upper limit value (P2) of the first reference pressure (step 38), and as a result of the determination, the detected discharge pressure is detected. If the pressure (Pd) is equal to or lower than the lower limit (P1) of the first reference pressure or equal to or higher than the upper limit (P2), the speed of the outdoor fan 113 is adjusted to adjust the discharge pressure (step 40). When the discharge pressure of the compressor is higher than the upper limit, the speed of the outdoor fan is increased to increase the heat exchange capacity, thereby lowering the discharge pressure, and when the discharge pressure is lower than the lower limit, the speed of the outdoor fan is decreased to reduce heat. Increase discharge pressure by lowering exchange capacity. At this time, the outdoor control unit controls the outdoor fan based on the speed of the outdoor fan detected by the speed sensor. When the adjustment of the outdoor fan is completed, the process proceeds to step 36.

段階３０の判断結果、室外温度（Ｍｏ）が基準温度（Ｍｒ）より高くないと、室外制御部１２０は圧縮機の圧縮能力（ＣＰ）を第１圧縮能力（ＣＰ１）より小さい第２圧縮能力（ＣＰ２）に設定する（段階４２）。これは室外温度によって圧縮機の圧縮能力を設定することにより、空気調和機の運転性能を高めるためである。   If the outdoor temperature (Mo) is not higher than the reference temperature (Mr) as a result of the determination in step 30, the outdoor control unit 120 sets the compression capacity (CP) of the compressor to a second compression capacity (CP1) smaller than the first compression capacity (CP1). CP2) (step 42). This is to improve the operating performance of the air conditioner by setting the compression capacity of the compressor according to the outdoor temperature.

室外制御部１２０は設定された第２圧縮能力によって圧縮機を駆動し（段階４４）、圧力センサ１０５により吐出冷媒の圧力を認識し（段階４６）、感知された吐出圧力（Ｐｄ）が第２基準圧力の下限値（Ｐ１１）と上限値（Ｐ１２）間に属するかを判断する（段階４８）。   The outdoor control unit 120 drives the compressor with the set second compression capacity (step 44), recognizes the pressure of the discharged refrigerant by the pressure sensor 105 (step 46), and the detected discharge pressure (Pd) is the second. It is determined whether the pressure falls between the lower limit (P11) and the upper limit (P12) of the reference pressure (step 48).

段階４８の判断結果、感知された吐出圧力（Ｐｄ）が第２基準圧力の下限値（Ｐ１１）以下であるか又は上限値（Ｐ１２）以上であると、吐出圧力を調節するため、室外ファン１１３の速度を調節する（段階５０）。圧縮機の吐出圧力が上限値以上であると、室外ファンの速度を増大させて熱交換能力を高めることで吐出圧力を低下させ、下限値以下であると、室外ファンの速度を減少させて熱交換能力を低めることで吐出圧力を高める。室外ファンの調節が終わると、段階４６に進む。   If the detected discharge pressure (Pd) is equal to or lower than the lower limit (P11) of the second reference pressure or equal to or higher than the upper limit (P12) as a result of the determination in step 48, the outdoor fan 113 is adjusted to adjust the discharge pressure. Is adjusted (step 50). When the discharge pressure of the compressor is higher than the upper limit, the speed of the outdoor fan is increased to increase the heat exchange capacity, thereby lowering the discharge pressure, and when the discharge pressure is lower than the lower limit, the speed of the outdoor fan is decreased to reduce heat. Increase discharge pressure by lowering exchange capacity. When the outdoor fan has been adjusted, the process proceeds to step 46.

段階３８において、感知された吐出圧力（Ｐｄ）が第１基準圧力の下限値（Ｐ１）と上限値（Ｐ２）間に属する場合、又は段階４８において、感知された吐出圧力（Ｐｄ）が第２基準圧力の下限値（Ｐ１１）と上限値（Ｐ１２）間に属する場合、室外制御部１２０は運転停止であるかを判断し（段階５２）、その判断結果、運転停止でないと、継続して冷房主体冷暖房同時運転を行うため、段階１２に進む。   In step 38, if the detected discharge pressure (Pd) is between the lower limit value (P1) and the upper limit value (P2) of the first reference pressure, or in step 48, the detected discharge pressure (Pd) is a second value. When it falls between the lower limit value (P11) and the upper limit value (P12) of the reference pressure, the outdoor control unit 120 determines whether or not the operation is stopped (step 52). Proceed to step 12 in order to perform the main cooling and heating simultaneous operation.

段階５０の判断結果、運転停止であると、圧縮機をオフさせ、そのほかに室外ファンなどの各駆動部をオフさせて、空気調和機の運転を終了する。   If the result of determination in step 50 is that the operation has been stopped, the compressor is turned off, and other driving units such as an outdoor fan are turned off in addition to the operation of the air conditioner.

本発明による空気調和機の構成を示す冷媒回路図である。It is a refrigerant circuit diagram which shows the structure of the air conditioner by this invention. 本発明による空気調和機が冷房主体冷暖房運転を同時に行う場合の冷媒の流れを示す冷媒回路図である。It is a refrigerant circuit diagram which shows the flow of a refrigerant | coolant in case the air conditioner by this invention performs a cooling main air-conditioning driving | operation simultaneously. 本発明による空気調和機において、総暖房負荷が総冷房負荷より高い場合、室外電動膨張バルブの開度によって変化する運転性能を示すグラフである。In the air conditioner by this invention, when a total heating load is higher than a total cooling load, it is a graph which shows the operation performance which changes with the opening degree of an outdoor electric expansion valve. 本発明による空気調和機において、総暖房負荷が総冷房負荷より高くない場合、室外電動膨張バルブの開度によって変化する運転性能を示すグラフである。In the air conditioner by this invention, when a total heating load is not higher than a total cooling load, it is a graph which shows the operation performance which changes with the opening degree of an outdoor electric expansion valve. 本発明による空気調和機の制御方法を示すフローチャートである。It is a flowchart which shows the control method of the air conditioner by this invention. 本発明による空気調和機の制御方法を示すフローチャートである。It is a flowchart which shows the control method of the air conditioner by this invention.

符号の説明Explanation of symbols

１００ 室外ユニット
１２０ 室外制御部
２００ａ、２００ｂ、２００ｃ、２００ｄ 室内ユニット
３００ 冷媒転換回路 DESCRIPTION OF SYMBOLS 100 Outdoor unit 120 Outdoor control part 200a, 200b, 200c, 200d Indoor unit 300 Refrigerant conversion circuit

Claims (14)

圧縮機、室外側熱交換器、室外側電動膨張バルブ及び開閉バルブを有する室外ユニットと、
室内側熱交換器をそれぞれ有する複数の室内ユニットと、
前記圧縮機の吐出冷媒が前記圧縮機から前記開閉バルブを通過して前記室内ユニットに流れるようにする第１冷媒流路と、
前記圧縮機の吐出冷媒が前記圧縮機から前記室外側熱交換器及び室外側電動膨張バルブを通過して前記室内ユニットに流れるようにする第２冷媒流路と、
前記室内ユニットの運転負荷によって、前記第１冷媒流路により流れる冷媒量と前記第２冷媒流路により流れる冷媒量を制御するための制御ユニットとを含んでなる空気調和機であって、
前記制御ユニットは、冷房運転又は暖房運転を行う前記室内ユニットの運転負荷を提供するための室内制御部と、前記室内制御部から受けた運転負荷によって前記開閉バルブの開閉と前記室外側電動膨張バルブの開度を制御する室外制御部とを含み、
前記室外制御部は、冷房主体冷暖房同時運転の場合、冷房運転する室内ユニットの性能と冷房運転及び暖房運転を含む全体運転室内ユニットの性能が共に満足されるように、前記室外側電動膨張バルブの開度を設定し、
かつ、前記室内ユニットは室内温度センサをさらに含み、前記室内制御部は室内ユニットの室内温度と設定温度の差により運転負荷を算出することを特徴とする空気調和機。 An outdoor unit having a compressor, an outdoor heat exchanger, an outdoor electric expansion valve, and an open / close valve;
A plurality of indoor units each having an indoor heat exchanger;
A first refrigerant flow path for allowing the refrigerant discharged from the compressor to flow from the compressor through the on-off valve to the indoor unit;
A second refrigerant flow path for allowing the refrigerant discharged from the compressor to flow from the compressor to the outdoor unit through the outdoor heat exchanger and the outdoor electric expansion valve;
An air conditioner comprising: a control unit for controlling the amount of refrigerant flowing through the first refrigerant flow path and the amount of refrigerant flowing through the second refrigerant flow path according to an operating load of the indoor unit ;
The control unit includes an indoor control unit for providing an operation load of the indoor unit that performs cooling operation or heating operation, and opening / closing of the open / close valve and the outdoor electric expansion valve according to the operation load received from the indoor control unit An outdoor control unit that controls the opening degree of
In the case of simultaneous cooling-and-cooling / cooling simultaneous operation, the outdoor control unit is configured so that both the performance of the indoor unit performing the cooling operation and the performance of the overall operation indoor unit including the cooling operation and the heating operation are satisfied. Set the opening,
The indoor unit further includes an indoor temperature sensor, and the indoor control unit calculates an operating load based on a difference between the indoor temperature of the indoor unit and a set temperature . 前記開閉バルブは、入口が前記圧縮機と室外側熱交換器間に連結され、出口が前記室内ユニット側に連結されることを特徴とする請求項１に記載の空気調和機。   The air conditioner according to claim 1, wherein the opening / closing valve has an inlet connected between the compressor and an outdoor heat exchanger, and an outlet connected to the indoor unit side. 前記室外側電動膨張バルブは前記室外側熱交換器の出口に連結されることを特徴とする請求項１に記載の空気調和機。   The air conditioner according to claim 1, wherein the outdoor electric expansion valve is connected to an outlet of the outdoor heat exchanger. 前記制御ユニットは、前記第１冷媒流路又は前記第２冷媒流路により流れる冷媒量を調節するため、前記開閉バルブと前記室外側電動膨張バルブを制御することを特徴とする請求項１に記載の空気調和機。   2. The control unit according to claim 1, wherein the control unit controls the open / close valve and the outdoor electric expansion valve in order to adjust an amount of refrigerant flowing through the first refrigerant channel or the second refrigerant channel. Air conditioner. 前記室外制御部は、暖房運転する室内ユニットの総暖房運転負荷と冷房運転する室内ユニットの総冷房運転負荷を比較し、その比較結果によって前記室外側電動膨張バルブの開度を設定することを特徴とする請求項５に記載の空気調和機。  The outdoor control unit compares the total heating operation load of the indoor unit that performs the heating operation with the total cooling operation load of the indoor unit that performs the cooling operation, and sets the opening degree of the outdoor electric expansion valve according to the comparison result. The air conditioner according to claim 5. 圧縮機、室外側熱交換器、室外側電動膨張バルブ、開閉バルブ、室外ファン、室外温度センサ及び圧力センサを有する室外ユニットと、  An outdoor unit having a compressor, an outdoor heat exchanger, an outdoor electric expansion valve, an open / close valve, an outdoor fan, an outdoor temperature sensor, and a pressure sensor;
室内温度センサ、室内側熱交換器をそれぞれ有する複数の室内ユニットと、  A plurality of indoor units each having an indoor temperature sensor and an indoor heat exchanger;
前記圧縮機の吐出冷媒が前記圧縮機から前記開閉バルブを通過して前記室内ユニットに流れるようにする第１冷媒流路と、  A first refrigerant flow path for allowing the refrigerant discharged from the compressor to flow from the compressor through the on-off valve to the indoor unit;
前記圧縮機の吐出冷媒が前記圧縮機から前記室外側熱交換器及び室外側電動膨張バルブを通過して前記室内ユニットに流れるようにする第２冷媒流路と、  A second refrigerant flow path for allowing the refrigerant discharged from the compressor to flow from the compressor through the outdoor heat exchanger and the outdoor electric expansion valve to the indoor unit;
前記室内温度センサにより感知した室内温度と設定温度の差によって前記室内ユニットの運転負荷を算出し、算出された運転負荷を提供するための室内制御部と、  An indoor control unit for calculating an operating load of the indoor unit based on a difference between an indoor temperature sensed by the indoor temperature sensor and a set temperature, and providing the calculated operating load;
前記室内制御部から受けた運転負荷によって前記開閉バルブの開閉と前記室外側電動膨張バルブの開度を制御し、前記室外温度センサにより感知した室外温度によって前記圧縮機の圧縮能力を設定し、設定された圧縮能力によって前記圧縮機を駆動する場合、前記圧力センサにより感知した前記圧縮機の吐出圧力によって前記室外ファンの速度を制御する室外制御部とを含んでなることを特徴とする空気調和機。  The opening and closing of the on-off valve and the opening degree of the outdoor electric expansion valve are controlled by the operating load received from the indoor control unit, and the compression capacity of the compressor is set by the outdoor temperature sensed by the outdoor temperature sensor. An air conditioner comprising: an outdoor control unit that controls the speed of the outdoor fan according to the discharge pressure of the compressor sensed by the pressure sensor when the compressor is driven by the compressed capacity. . 前記室外制御部は、感知した室外温度が高いほど前記圧縮機の圧縮能力を高く設定することを特徴とする請求項６に記載の空気調和機。  The air conditioner according to claim 6, wherein the outdoor control unit sets the compression capacity of the compressor higher as the detected outdoor temperature is higher. 前記室外制御部は、前記圧縮機の吐出圧力を減少させるため、前記室外ファンの速度を増大させ、前記圧縮機の吐出圧力を増大させるため、前記室外ファンの速度を減少させることを特徴とする請求項７に記載の空気調和機。  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. The air conditioner according to claim 7. 前記空気調和機は前記室外ファンの速度を感知するための速度センサをさらに含み、前記室外制御部は前記速度センサにより感知した室外ファンの速度に基づいて前記室外ファンを制御することを特徴とする請求項８に記載の空気調和機。  The air conditioner further includes a speed sensor for sensing a speed of the outdoor fan, and the outdoor control unit controls the outdoor fan based on a speed of the outdoor fan sensed by the speed sensor. The air conditioner according to claim 8. 圧縮機、室外側熱交換器、室外側電動膨張バルブ及び開閉バルブを有する室外ユニットと、室内側熱交換器をそれぞれ有する複数の室内ユニットと、前記圧縮機の吐出冷媒が前記圧縮機から前記開閉バルブを通過して前記室内ユニットに流れるようにする第１冷媒流路と、前記圧縮機の吐出冷媒が前記圧縮機から前記室外側熱交換器及び室外側電動膨張バルブを通過して前記室内ユニットに流れるようにする第２冷媒流路とを含む空気調和機の制御方法において、  An outdoor unit having a compressor, an outdoor heat exchanger, an outdoor electric expansion valve and an open / close valve, a plurality of indoor units each having an indoor heat exchanger, and a refrigerant discharged from the compressor is opened and closed from the compressor A first refrigerant flow path that passes through the valve and flows to the indoor unit; and a refrigerant discharged from the compressor passes through the outdoor heat exchanger and the outdoor electric expansion valve from the compressor and passes through the indoor unit. In the control method of the air conditioner including the second refrigerant flow path to flow in
前記室内ユニットの運転負荷を前記室内ユニットの室内温度と設定温度の差によって算出し、算出された運転負荷によって、冷房主体冷暖房同時運転の場合、冷房運転する室内ユニットの総冷房運転負荷と暖房運転する室内ユニットの総暖房運転負荷をそれぞれ算出し、前記総暖房運転負荷と前記総冷房運転負荷を比較し、この比較結果によって前記開閉バルブの開閉と前記室外側電動膨張バルブの開度を制御することを特徴とする空気調和機の制御方法。  The operation load of the indoor unit is calculated by the difference between the indoor temperature of the indoor unit and the set temperature, and the total cooling operation load and heating operation of the indoor unit performing the cooling operation in the case of simultaneous cooling-based cooling and heating operation based on the calculated operation load The total heating operation load of the indoor unit to be calculated is calculated, the total heating operation load and the total cooling operation load are compared, and the opening / closing of the on-off valve and the opening of the outdoor electric expansion valve are controlled based on the comparison result An air conditioner control method characterized by the above. 前記室外側電動膨張バルブの開度制御は、冷房主体冷暖房同時運転の場合、冷房運転する室内ユニットの性能と冷房運転及び暖房運転を含む全体運転室内ユニットの性能が共に満足されるようにすることを特徴とする請求項１０に記載の空気調和機の制御方法。  The opening degree control of the outdoor electric expansion valve should satisfy both the performance of the indoor unit that performs the cooling operation and the performance of the overall operation indoor unit including the cooling operation and the heating operation in the case of simultaneous cooling-based cooling and heating operation. The method of controlling an air conditioner according to claim 10. 前記冷媒量の制御が終わると、室外ユニットに設けられた室外温度センサにより室外温度を感知し、感知された室外温度によって前記圧縮機の圧縮能力を設定することを特徴とする請求項１０に記載の空気調和機の制御方法。  11. The compressor according to claim 10, wherein when the control of the refrigerant amount is finished, the outdoor temperature is detected by an outdoor temperature sensor provided in an outdoor unit, and the compression capacity of the compressor is set according to the detected outdoor temperature. Air conditioner control method. 前記設定された圧縮能力によって前記圧縮機を駆動する場合、前記圧縮機の吐出圧力を感知し、感知された圧縮機の吐出圧力によって、前記室外ユニットに設けられた室外ファンの速度を制御することを特徴とする請求項１２に記載の空気調和機の制御方法。  When the compressor is driven by the set compression capacity, the discharge pressure of the compressor is sensed, and the speed of an outdoor fan provided in the outdoor unit is controlled by the sensed discharge pressure of the compressor. The method of controlling an air conditioner according to claim 12. 前記室外ファンの速度制御は、前記圧縮機の吐出圧力と設定された基準圧力を比較し、比較結果、前記圧縮機の吐出圧力が高いと前記室外ファンの速度を増大させ、前記圧縮機の吐出圧力が前記基準圧力より低いと前記室外ファンの速度を低下させることを特徴とする請求項１３に記載の空気調和機の制御方法。  The speed control of the outdoor fan compares the discharge pressure of the compressor with a set reference pressure, and as a result of comparison, if the discharge pressure of the compressor is high, the speed of the outdoor fan is increased, and the discharge of the compressor The method of controlling an air conditioner according to claim 13, wherein when the pressure is lower than the reference pressure, the speed of the outdoor fan is reduced.
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