WO2022190885A1 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
WO2022190885A1
WO2022190885A1 PCT/JP2022/007663 JP2022007663W WO2022190885A1 WO 2022190885 A1 WO2022190885 A1 WO 2022190885A1 JP 2022007663 W JP2022007663 W JP 2022007663W WO 2022190885 A1 WO2022190885 A1 WO 2022190885A1
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WO
WIPO (PCT)
Prior art keywords
indoor unit
indoor
heat exchanger
request
unit
Prior art date
Application number
PCT/JP2022/007663
Other languages
French (fr)
Japanese (ja)
Inventor
元輝 高木
Original Assignee
ダイキン工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Priority to CN202280020872.7A priority Critical patent/CN116981893A/en
Publication of WO2022190885A1 publication Critical patent/WO2022190885A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values

Definitions

  • the present disclosure relates to air conditioners.
  • Air conditioners are known in which moisture in the air is condensed or frosted on the surface of an indoor heat exchanger, and the moisture is used to clean the indoor heat exchanger. Further, in Patent Document 1, in a multi-type air conditioner having one outdoor unit and a plurality of indoor units, when a predetermined condition is established, a time period in which cleaning processing is performed in a plurality of indoor heat exchangers It is disclosed to overlap at least a portion of the.
  • Patent Document 1 when a plurality of indoor heat exchangers are in the process of cleaning (cleaning operation), if one of the indoor units receives an air conditioning operation command, the plurality of indoor heat exchangers It is disclosed that the cleaning operation is stopped and the air conditioning operation of the indoor unit that has received the instruction is performed.
  • Patent Literature 1 does not disclose any control when there is a request to simultaneously perform a cleaning operation in a certain indoor unit and a heating operation in another indoor unit. In such a case, since the cleaning operation in which the indoor heat exchanger functions as an evaporator and the heating operation in which the indoor heat exchanger functions as a condenser cannot be performed at the same time, when the heating operation is performed, the user's request for the cleaning operation cannot be satisfied.
  • An object of the present disclosure is to provide an air conditioner that can meet a user's request for a cleaning operation when there is a request for a cleaning operation in a certain indoor unit and a request for a heating operation in another indoor unit at the same time. It is to be.
  • An air conditioner indoor unit is connected to an outdoor unit including an outdoor heat exchanger, the first indoor unit including a first indoor heat exchanger, and the outdoor unit connected to the outdoor unit via a refrigerant pipe. through the refrigerant pipe, a second indoor unit including a second indoor heat exchanger, and a control unit.
  • the control unit performs a cleaning operation in the first indoor unit and the second indoor heat, including cleaning the first indoor heat exchanger by causing the first indoor heat exchanger to function as an evaporator.
  • a heating operation can be performed in the second indoor unit by causing the exchanger to function as a condenser, and the request for the cleaning operation in the first indoor unit and the request for the heating operation in the second indoor unit at the same time, the cleaning operation is performed in the first indoor unit without performing the heating operation in the second indoor unit.
  • the cleaning operation in the first indoor unit is requested first. and when the first indoor unit is in a preparatory state before the start of the cleaning operation at the time when the heating operation is requested in the second indoor unit, the heating operation in the second indoor unit is requested first and the first
  • the cleaning operation in the first indoor unit and heating in the second indoor unit It includes all cases where driving is requested at the same time.
  • control unit is capable of executing cooling operation in the first indoor unit, causing the first indoor heat exchanger to function as an evaporator, and When there is a request for the cooling operation and a request for the heating operation in the second indoor unit at the same time, the heating operation is performed in the second indoor unit without executing the cooling operation in the first indoor unit.
  • the control unit performs, as the air conditioning operation in the first indoor unit, a heating operation in which the first indoor heat exchanger functions as a condenser, and an evaporating operation in which the first indoor heat exchanger is operated.
  • the second indoor heat exchange can be performed as the air conditioning operation in the second indoor unit.
  • the second indoor unit is capable of executing a cooling operation in which the second indoor heat exchanger functions as an evaporator, and includes washing the second indoor heat exchanger by causing the second indoor heat exchanger to function as an evaporator.
  • the control unit determines the request for the air-conditioning operation or the cleaning operation in the first indoor unit and the request for the cleaning operation.
  • the request for the air conditioning operation or the cleaning operation for the second indoor unit is made at the same time, the operation request for the first indoor unit and the operation request for the second indoor unit are made first. It may be possible to operate in a first mode in which the operation according to the operation request is preferentially executed, and in a second mode in which the operation according to the operation request performed later is preferentially executed.
  • the control unit when the control unit is operating in the first mode, when the cleaning operation in the first indoor unit is requested during the heating operation in the second indoor unit, the first The heating operation in the second indoor unit may be interrupted and the cleaning operation in the first indoor unit may be performed.
  • the control unit when the control unit is operating in the first mode, when the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit, the second The cleaning operation in the first indoor unit may be continued without executing the heating operation in the indoor unit.
  • the control unit when the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit, the second The cleaning operation in the first indoor unit may be continued without executing the heating operation in the second indoor unit.
  • control unit when the control unit is operating in the second mode, when the cleaning operation in the first indoor unit is requested during the heating operation in the second indoor unit, the second The heating operation in the second indoor unit may be interrupted and the cleaning operation in the first indoor unit may be performed.
  • the control unit performs, as the air conditioning operation in the first indoor unit, a heating operation in which the first indoor heat exchanger functions as a condenser, and an evaporating operation in which the first indoor heat exchanger is operated.
  • the second indoor heat exchange can be performed as the air conditioning operation in the second indoor unit.
  • the second indoor unit is capable of executing a cooling operation in which the second indoor heat exchanger functions as an evaporator, and includes washing the second indoor heat exchanger by causing the second indoor heat exchanger to function as an evaporator.
  • the control unit determines the request for the air-conditioning operation or the cleaning operation in the first indoor unit and the request for the cleaning operation.
  • a third mode in which, when a request for the air conditioning operation or the cleaning operation in the second indoor unit is received at the same time, the operation according to the operation request in the first indoor unit is preferentially executed; It may be possible to operate in a fourth mode in which the indoor unit preferentially executes the operation according to the operation request.
  • the control unit when operating in the fourth mode, when the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit, the control unit The cleaning operation in the first indoor unit is continued without executing the heating operation in the second indoor unit, and the cleaning operation in the first indoor unit is performed during the heating operation in the second indoor unit.
  • the heating operation in the second indoor unit may be interrupted and the cleaning operation in the first indoor unit may be performed.
  • control unit when the control unit is operating in the third mode, when the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit, the first It is requested that the cleaning operation in the indoor unit is continued and the heating operation is not performed in the second indoor unit, and that the cleaning operation in the first indoor unit is in progress during the heating operation in the second indoor unit.
  • the cleaning operation in the first indoor unit may be performed and the heating operation in the second indoor unit may be interrupted.
  • the control unit performs, as the air conditioning operation in the first indoor unit, a heating operation in which the first indoor heat exchanger functions as a condenser, and an evaporating operation in which the first indoor heat exchanger is operated.
  • the second indoor heat exchange can be performed as the air conditioning operation in the second indoor unit.
  • the second indoor unit is capable of executing a cooling operation in which the second indoor heat exchanger functions as an evaporator, and includes washing the second indoor heat exchanger by causing the second indoor heat exchanger to function as an evaporator.
  • the control unit determines the request for the air-conditioning operation or the cleaning operation in the first indoor unit and the request for the cleaning operation.
  • the operation request for the first indoor unit and the operation request for the second indoor unit are made first. a first mode for preferentially executing the operation according to the operation request, a second mode for preferentially executing the operation according to the later operation request, and the operation according to the operation request in the first indoor unit. and the operation according to the operation request in the second indoor unit may be preferentially executed.
  • the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit.
  • the heating operation in the second indoor unit is not performed, and the heating operation in the first indoor unit is performed during the heating operation in the second indoor unit.
  • the cleaning operation in the first indoor unit may be performed and the heating operation in the second indoor unit may be interrupted.
  • the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit.
  • the cleaning operation in the first indoor unit is continued and the heating operation in the second indoor unit is not performed, and the heating operation in the first indoor unit is performed during the heating operation in the second indoor unit
  • the cleaning operation in the first indoor unit may be performed and the heating operation in the second indoor unit may be interrupted.
  • the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit.
  • the cleaning operation in the first indoor unit is continued and the heating operation in the second indoor unit is not performed, and the heating operation in the first indoor unit is performed during the heating operation in the second indoor unit
  • the cleaning operation in the first indoor unit may be performed and the heating operation in the second indoor unit may be interrupted.
  • the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit.
  • the washing operation in the first indoor unit is continued and the heating operation in the second indoor unit is not performed, and the washing in the first indoor unit is performed during the heating operation in the second indoor unit.
  • the cleaning operation in the first indoor unit may be performed and the heating operation in the second indoor unit may be interrupted.
  • FIG. 1 is a configuration diagram of a multi-type air conditioner according to an embodiment of the present disclosure
  • FIG. FIG. 2 is an external view of the indoor unit shown in FIG. 1 as viewed obliquely from below
  • FIG. 2 is a block diagram of the multi-type air conditioner shown in FIG. 1
  • FIG. 2 is a flowchart for explaining the operation of the multi-type air conditioner shown in FIG. 1 when a cleaning operation is requested;
  • FIG. 1 shows a configuration diagram of a multi-type air conditioner 1 according to an embodiment of the present disclosure.
  • the multi-type air conditioner 1 includes an outdoor unit 10 and three indoor units 20A, 20B, and 20C. It is connected to the outdoor unit 10 via piping.
  • the indoor unit 20A has an A-room heat exchanger 24A and an A-room fan 25A.
  • the indoor unit 20B has a B room heat exchanger 24B and a B room fan 25B.
  • the indoor unit 20C has a C-room heat exchanger 24C and a C-room fan 25C.
  • the number of indoor units is three, but the number of indoor units can be any number of two or more. Also, in the following description, the room in which the indoor unit 20A is installed is called room A, the room in which 20B is installed is called room B, and the room in which the indoor unit 20C is installed is called room C.
  • the outdoor unit 10 includes a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an outdoor fan 15, an accumulator 16, and three electric expansion valves EVA, EVB, EVC.
  • One of the four ports of the four-way switching valve 12 is connected to the discharge side of the compressor 11, another one is connected to one end of the outdoor heat exchanger 13, and another one is connected to one end of the accumulator 16, Yet another one is connected to one end of A-chamber heat exchanger 24A, B-chamber heat exchanger 24B and C-chamber heat exchanger 24C via three refrigerant pipe connections 18A, 18B, 18C.
  • the other end of the outdoor heat exchanger 13 is connected to one ends of three electric expansion valves EVA, EVB and EVC.
  • the other ends of the three electric expansion valves EVA, EVB, and EVC are connected to the A-compartment heat exchanger 24A, the B-compartment heat exchanger 24B, and the C-compartment heat exchanger 24A, 17B, and 17C, respectively, via three refrigerant pipe connections 17A, 17B, and 17C. connected to the other end of the device 24C.
  • the other end of the accumulator 16 is connected to the suction side of the compressor 11 .
  • An A-room fan 25A, a B-room fan 25B, and a C-room fan 25C are arranged near the A-room heat exchanger 24A, the B-room heat exchanger 24B, and the C-room heat exchanger 24C, respectively.
  • the A room fan 25A is driven by an A room fan motor 26A (see FIG. 3).
  • the B room fan 25B and the C room fan 25C are also driven by indoor fan motors (not shown).
  • Compressor 11, four-way selector valve 12, outdoor heat exchanger 13, electric expansion valves EVA, EVB, EVC, A-chamber heat exchanger 24A, B-chamber heat exchanger 24B and C-chamber heat exchanger 24C , and an accumulator 16 are connected by refrigerant pipes to form a refrigerant circuit 3 .
  • the refrigerant circuit 3 uses, for example, slightly flammable R32 as a refrigerant.
  • a discharge pipe temperature sensor 31 is arranged on the discharge side of the compressor 11 .
  • An outdoor heat exchanger temperature sensor 32 for detecting the outdoor heat exchanger temperature is arranged in the outdoor heat exchanger 13, and an outdoor temperature sensor 33 for detecting the outdoor temperature is arranged near the outdoor heat exchanger 13. are placed.
  • An A-room heat exchanger temperature sensor 45A for detecting the indoor heat exchanger temperature is arranged in the A-room heat exchanger 24A, and an A-room temperature sensor 46A for detecting the indoor temperature is arranged near the A-room heat exchanger 24A. and an A room humidity sensor 47A for detecting indoor humidity.
  • a B-room heat exchanger temperature sensor 45B for detecting the indoor heat exchanger temperature is arranged in the B-room heat exchanger 24B, and a B-room temperature sensor 46B for detecting the indoor temperature is arranged near the B-room heat exchanger 24B. and a room B humidity sensor 47B for detecting indoor humidity.
  • a C-chamber heat exchanger temperature sensor 45C for detecting the indoor heat exchanger temperature is arranged in the C-chamber heat exchanger 24C.
  • a sensor 46C and a C-chamber humidity sensor 47C for detecting the indoor humidity are arranged.
  • FIG. 2 is a perspective view of the indoor unit 20A viewed obliquely from below.
  • the indoor unit 20A is a ceiling cassette type (ceiling embedded type) indoor unit.
  • the three indoor units 20A, 20B, and 20C are all ceiling cassette type indoor units, but some or all of them may be wall-mounted or floor-mounted indoor units.
  • the indoor unit 20A includes a casing body 101, a rectangular panel 102 attached to the lower side of the casing body 101, and a grill 103 detachably attached to the panel 102.
  • the surface of the panel 102 has light emitting diodes (LEDs), and the A room display unit 28A (see FIG. 3) is provided.
  • LEDs light emitting diodes
  • a blowout port 110 is provided along the short side of the panel 102 on one side in the longitudinal direction of the panel 102 .
  • a flap 120 is attached to the panel 102 .
  • the flap 120 is driven by the A-chamber flap drive motor 27A (see FIG. 3) to be rotatable relative to the panel 102 within a predetermined angular range, thereby opening and closing the outlet 110 .
  • FIG. 3 shows a state where the outlet 110 is closed by the flap 120 .
  • a drain socket 107 protrudes from the side wall of the casing body 101 .
  • a drain hose (not shown) is connected to the drain socket 107 from the outside.
  • pipe connection portions 105 and 106 protrude from side walls of the casing main body 101 .
  • Refrigerant pipes (not shown) are connected to the pipe connection portions 105 and 106 from the outside.
  • Suspension fittings 111 to 113 protrude laterally from the casing main body 101 .
  • an electrical component section 108 is arranged near the casing main body 101 .
  • FIG. 3 is a block diagram of the air conditioner 1 according to this embodiment. Since the three indoor units 20A, 20B, and 20C have the same structure in this embodiment, the indoor unit 20A will be mainly described here. Also, the illustration of the indoor units 20B and 20C is simplified in FIG.
  • the outdoor unit 10 includes an outdoor control unit 51 comprising a microcomputer including an arithmetic device and a storage device, an input/output circuit, and the like.
  • the indoor units 20A, 20B, and 20C respectively include indoor controllers 52A, 52B, and 52C each including a microcomputer including an arithmetic device and a storage device, an input/output circuit, and the like.
  • the outdoor control unit 51 and the indoor control unit 52A are connected by a communication line LA
  • the outdoor control unit 51 and the indoor control unit 52B are connected by a communication line LB
  • the outdoor control unit 51 and the indoor control unit 52C are connected by a communication line LC.
  • the outdoor controller 51 and the three indoor controllers 52A, 52B, and 52C communicate with each other via communication lines LA, LB, and LC, so that the outdoor controller 51 and the indoor controllers 52A, 52B, and 52C operate as multi-type air It operates as the control section 50 of the harmony machine 1 .
  • Temperature detection signals from the discharge pipe temperature sensor 31, the outdoor heat exchanger temperature sensor 32, and the outdoor temperature sensor 33 are supplied to the outdoor control unit 51.
  • the outdoor control unit 51 also controls the compressor 11, the four-way switching valve 12, the outdoor fan motor 14, the electric expansion valves EVA, EVB, EVC, and the like.
  • Detection signals from the A-room heat exchanger temperature sensor 45A, the A-room temperature sensor 46A, and the A-room humidity sensor 47A are supplied to the indoor control unit 52A.
  • the indoor control unit 52A also controls the A-room fan motor 26A, the A-room flap drive motor 27A, the A-room display unit 28A, the A-room communication unit 29A, and the like.
  • the A-room communication unit 29A performs wireless communication with a user-operable remote controller (not shown) (hereinafter referred to as "remote controller").
  • the control unit 50 controls the operation of the air conditioner 1 in response to commands from the remote controller.
  • the remote control has a liquid crystal display unit or a light emitting diode (LED), and can notify the user by means of light, characters, graphics, or the like.
  • LED light emitting diode
  • control unit 50 rotates the air conditioning operation including the cooling operation and the heating operation, the A room fan 25A, the B room fan 25B and the C room fan 25C in each indoor unit.
  • a cleaning operation which will be described later, can be executed.
  • the outdoor control unit 51 switches the four-way switching valve 12 to the position indicated by the dotted line in FIG. start driving. At this time, the outdoor control unit 51 opens the electric expansion valve EVA to a predetermined degree of opening, while closing the electric expansion valves EVB and EVC.
  • the high-temperature and high-pressure gas refrigerant discharged from the compressor 11 is condensed by heat exchange with the outdoor air in the outdoor heat exchanger 13 functioning as a condenser by the outdoor control unit 51 rotating the outdoor fan 15. It becomes a liquid refrigerant.
  • the liquid refrigerant from the outdoor heat exchanger 13 reaches the A-room heat exchanger 24A after being decompressed by the electric expansion valve EVA.
  • the indoor control unit 52A operates the A-room fan 25A
  • the decompressed liquid refrigerant evaporates by heat exchange with the indoor air in the A-room heat exchanger 24A functioning as an evaporator, and becomes a gaseous refrigerant.
  • the indoor control unit 52A moves the flap 120 to the position where the air outlet 110 opens, so that the air cooled by the room A heat exchanger 24A is discharged from the air outlet 110.
  • the outdoor control unit 51 switches the four-way switching valve 2 to the solid line position shown in FIG. At this time, the outdoor controller 51 opens all the electric expansion valves EVA, EVB, and EVC to predetermined opening degrees. Therefore, when the indoor unit 20A performs the heating operation, the high-temperature refrigerant also flows into the other indoor units 20B and 20C. This is to prevent the refrigerant from staying in the indoor units 20B and 20C that do not perform the heating operation and in the refrigerant pipes before and after them.
  • the high-temperature and high-pressure gas refrigerant discharged from the compressor 11 is condensed by heat exchange with indoor air in the A-room heat exchanger 24A functioning as a condenser by the indoor controller 52A operating the A-room fan 25A. and becomes a liquid refrigerant.
  • the refrigerant from the A-chamber heat exchanger 24A, the B-chamber heat exchanger 24B, and the C-chamber heat exchanger 24C reaches the outdoor heat exchanger 13 after being decompressed by the electric expansion valves EVA, EVB, and EVC. .
  • control unit 50 The details of control of the outdoor unit 10 and the indoor units 20A, 20B, and 20C by the control unit 50 are changed by commands from the remote controller.
  • the remote controller By operating the remote controller, the user can request the multi-type air conditioner 1 to select heating operation or cooling operation, start operation, stop operation, set room temperature and air volume, and start and stop cleaning operation.
  • the controller 50 executes the evaporator phase of the cleaning operation in step S1. Specifically, the four-way switching valve 12 is switched to the position indicated by the dotted line in FIG. 1, and the operation of the compressor 11 is started.
  • the controller 50 also drives the room A fan motor 26A to rotate the room A fan 25A at a predetermined number of revolutions, and drives the room A flap drive motor 27A to move the flap 120 to the position where the outlet 110 opens. .
  • the control unit 50 opens the electric expansion valve EVA to a predetermined degree of opening, while closing the electric expansion valves EVB and EVC.
  • the A-room heat exchanger 24A functions as an evaporator as in the cooling operation, and the evaporator phase of the cleaning operation starts.
  • the temperature of the A-compartment heat exchanger 24A becomes higher than 0° C. and below the dew point temperature, moisture in the air begins to condense on the surface of the A-compartment heat exchanger 24A. This condensed water can clean the dirt adhering to the surface of the A-chamber heat exchanger 24A.
  • the temperature of the A-compartment heat exchanger 24A may be kept below the freezing point so that the surface of the A-compartment heat exchanger 24A is frosted with moisture in the air.
  • the length of the evaporator phase is a predetermined time.
  • the length of the evaporator phase is calculated by the control unit 50 from the environmental conditions (room temperature and humidity of room A, outdoor temperature). It may be the time until After the evaporator phase ends, the controller 50 stops the operation of the compressor 11 .
  • step S2 the controller 50 executes the blowing phase of the cleaning operation. Specifically, following step S1, the room A fan motor 26A is driven to rotate the room A fan 25A. Then, the position of the flap 120 is maintained at the same position as in step S1. Since the compressor 11 is stopped in the blowing phase, the temperature of the A-room heat exchanger 24A is higher than the temperature of the A-room heat exchanger 24A in the evaporator phase. The temperature of the A-compartment heat exchanger 24A usually exceeds the dew point temperature. By rotating the A room fan 25A, the evaporation of the moisture condensed on the A room heat exchanger 24A can be accelerated.
  • the number of rotations of the A-room fan 25A and the blowing time are fixed at constant values. It should be noted that the compressor 11 does not have to be stopped if the temperature of the A-room heat exchanger 24A is higher than the temperature of the A-room heat exchanger 24A in the evaporator phase in the ventilation phase.
  • the controller 50 executes the condenser phase of the cleaning operation. Specifically, the four-way switching valve 12 is switched to the solid line position shown in FIG. 1 to start the operation of the compressor 11 .
  • the controller 50 drives the room A fan motor 26A to rotate the room A fan 25A at a predetermined number of revolutions, and maintains the position of the flap 120 at the same position as in step S1. .
  • the controller 50 opens all the electric expansion valves EVA, EVB, and EVC to predetermined opening degrees.
  • the A-room heat exchanger 24A functions as a condenser as in the heating operation, and the condenser phase of the cleaning operation starts.
  • the temperature of the A-compartment heat exchanger 24A is higher than the temperature of the A-compartment heat exchanger 24A in the ventilation phase. Therefore, the evaporation of moisture remaining on the surface of the A-compartment heat exchanger 24A can be further accelerated.
  • the length of the condenser phase may be a predetermined amount of time.
  • the controller 50 stops the compressor 11 and the A-chamber fan 25A, drives the A-chamber flap drive motor 27A, and moves the flap 120 to a position where the outlet 110 is closed.
  • the condenser phase can be omitted, for example, if the blowing phase of step S2 is made sufficiently long.
  • the user can set which one is prioritized when there are requests to execute the operation of two or more indoor units at the same time.
  • operation modes “When there is a request to execute operation for two or more indoor units at the same time", the case where the operation of one of the indoor units is requested first, and the case where two or more indoor units are requested to operate Includes both and when driving is requested at the same time.
  • the request for the air conditioning operation and the request for the cleaning operation are referred to as operation requests.
  • the multi-type air conditioner 1 has five operation modes from first to fifth described below regarding which indoor unit is preferentially operated.
  • the first mode is when there is a request for air conditioning operation or cleaning operation in one of the indoor units 20A, 20B, 20C and a request for air conditioning operation or cleaning operation in another indoor unit 20A, 20B, 20C at the same time.
  • the second mode is a mode for preferentially executing an operation according to a later request.
  • a user can select either the first mode or the second mode by operating a remote controller or a central control panel (not shown). For example, if one of the successive operation requests requests the heating operation and the other requests the cooling operation, it is not possible to execute the operation related to the subsequent request in the first mode. However, if both of the preceding and succeeding operation requests request the cooling operation, the cooling operation related to the subsequent request can be executed in the first mode.
  • the third mode when there is a request for air conditioning operation or cleaning operation in the indoor unit 20A and a request for air conditioning operation or cleaning operation in the other indoor units 20B and 20C, priority is given to operation in the indoor unit 20A. It is a mode to execute by Similarly, the fourth mode is a mode in which the operation of the indoor unit 20B is preferentially executed, and the fifth mode is a mode in which the operation of the indoor unit 20C is preferentially executed. A user can select only one of the third mode, the fourth mode, and the fifth mode by operating a remote controller or a central control panel (not shown).
  • the heating operation can be performed in the indoor unit 20A. Cooling operation at 20B cannot be executed.
  • the heating operation can be performed in either indoor unit.
  • the indoor unit 20B whose operation is requested first and the indoor unit 20C whose operation is requested later are the first to be operated. priority is given to the indoor unit 20B. In such a case, priority may be given to the indoor unit 20C whose operation is requested later.
  • the multi-type air conditioner 1 can operate in one of the first to fifth modes, and further, one mode selected from the first mode and the second mode, and the third mode. It can also operate in two modes, one mode selected from the fifth mode. Then, if one mode selected from the first mode and the second mode and one mode selected from the third to fifth modes collide with each other, in the present embodiment, the third ⁇ 5th mode is given priority. For example, when operating in the first mode and the third mode, if the cooling operation of the indoor unit 20B is requested first and then the heating operation of the indoor unit 20A is requested, priority is given to the first mode. The cooling operation of the indoor unit 20B is interrupted and the heating operation of the indoor unit 20A is performed according to the rule of the third mode. In such a case, priority may be given to the first and second modes.
  • step S11 the control unit 50 determines whether at least one of the indoor units 20A and 20C installed in the A room and the C room is in the air conditioning operation or the cleaning operation. to judge whether In step S11, the control unit 50 also determines whether the heating operation in the indoor unit 20B and the air conditioning operation or the cleaning operation in at least one of the indoor units 20A and 20C are requested at the same time.
  • “simultaneously” includes not only the case of being performed at the same time, but also the case where the indoor units 20A and 20C are in a preparatory state before starting the air-conditioning operation or the cleaning operation.
  • the indoor unit 20B may be performing the cleaning operation or the cooling operation, or may not be performing either operation. In the following description, it is assumed that the indoor unit 20B was in a dormant state in which no operation was performed when the heating operation was requested.
  • step S12 the controller 50 determines in step S12 whether at least one of the indoor units 20A and 20C is in cooling operation.
  • step S12 the control unit 50 also determines whether the heating operation in the indoor unit 20B and the cooling operation in at least one of the indoor units 20A and 20C are requested at the same time.
  • “simultaneously” includes not only the case where the operation is performed at the same time, but also the case where the indoor units 20A and 20C are in a preparatory state before starting the cooling operation.
  • step S13 If this condition is met (S12: YES), proceed to step S13.
  • the indoor unit 20C is in a resting state and is not in operation, and only the indoor unit 20A is in operation.
  • the second mode that is, the "boost priority mode" in which priority is given to the previously requested operation, is effective.
  • the indoor unit 20B which is prioritized in the fourth mode, requests the heating operation. Therefore, the control unit 50 starts the heating operation in the indoor unit 20B according to the rules of the second mode and the fourth mode.
  • step S13 the control unit 50 causes the heating operation of the indoor unit 20B. start driving.
  • the multi-type air conditioner 1 enters a state of waiting for the next instruction while executing the heating operation in the indoor unit 20B (hereinafter referred to as "heating operation state").
  • the control unit 50 causes the display unit or the remote controller of the indoor unit 20A of the A room to display "The cooling operation is interrupted due to mode conflict with another room. ” is displayed to notify the user.
  • step S14 the control unit 50 determines whether at least one of the indoor units 20A, 20C is executing the evaporator phase or the ventilation phase of the cleaning operation, or is in the ventilation operation.
  • step S14 the control unit 50 also determines whether the heating operation in the indoor unit 20B and the operation other than the cooling operation in at least one of the indoor units 20A and 20C are simultaneously requested.
  • “simultaneously” includes not only the case where the operations are performed at the same time, but also the case where the indoor units 20A and 20C are in a preparatory state before starting operations other than the cooling operation.
  • step S15 the controller 50 causes the indoor unit 20A to operate (the evaporator phase or the ventilation phase of the cleaning operation) in violation of the rules of the second mode and the fourth mode. or fan operation). If the heating operation in the indoor unit 20B and the operation other than the cooling operation in the indoor unit 20A are requested at the same time, contrary to the rule of the fourth mode, in step S15, the control unit 50 Start the evaporator phase or blower operation of the wash operation on machine 20A. After the evaporator phase of the cleaning operation is continued or started, the multi-type air conditioner 1 sequentially shifts to the ventilation phase (S2) and the condenser phase (S3) of the cleaning operation described with reference to FIG.
  • the multi-type air conditioner 1 shifts to the condenser phase (S3).
  • the condenser phase ends, the multi-type air conditioner 1 enters a resting state, but the details are omitted here.
  • the multi-type air conditioner 1 waits for the next instruction while executing the blowing operation in the indoor unit 20A (hereinafter referred to as the "blowing operation state"). It will be maintained or will be in the fan operation state. In this case, the indoor unit 20B cannot perform the heating operation. Therefore, in step S15, the control unit 50 causes the display unit or the remote control of the indoor unit 20B of the room B to indicate that "heating operation cannot be performed due to mode conflict with another room.” is displayed to notify the user.
  • step S16 the indoor unit 20A is executing the condenser phase of the cleaning operation or heating operation.
  • the controller 50 starts the heating operation in the indoor unit 20B and continues the condenser phase or the heating operation in the indoor unit 20A in accordance with the rules of the second mode and the fourth mode. Specifically, the flap 120 of the indoor unit 20B is moved to a position where the outlet 110 is opened. Moreover, if necessary, the rotational speed of the compressor 11 and the opening degree of the electric expansion valve EVB are adjusted. If the heating operation of the indoor unit 20B and the heating operation of the indoor unit 20A are requested at the same time, the heating operation of the indoor unit 20A and the indoor unit 20B is started according to the rule of the fourth mode.
  • step S17 the controller 50 determines whether the condenser phase of the cleaning operation is being performed in the indoor unit 20A. If this condition is met (S17: YES), the process proceeds to step S18.
  • step S18 the controller 50 terminates the condenser phase when a predetermined time has elapsed since the start of the condenser phase in the indoor unit 20A. Specifically, the room A fan 25A is stopped, the room A flap drive motor 27A is driven, the flap 120 is moved to the position where the outlet 110 is closed, and the multi-type air conditioner 1 is brought into the heating operation state. If the condition of step S17 is not satisfied (S17: NO), the multi-type air conditioner 1 is shifted to the heating operation state without performing the process of step S18.
  • step S11 If the conditions in step S11 are not met (S11: NO), neither of the indoor units 20A, 20C is in operation.
  • the controller 50 starts the heating operation of the indoor unit 20B in step S19. Specifically, the four-way switching valve 2 is switched to the solid line position shown in FIG. 1, the compressor 11 is started to operate, and the electric expansion valves EVA, EVB, and EVC are each opened to a predetermined degree of opening. Further, the flap 120 of the indoor unit 20B is moved to the position where the outlet 110 is opened. As a result, the multi-type air conditioner 1 shifts to the heating operation state.
  • the operation when the heating operation of the indoor unit 20B is requested is the same as that described with reference to FIG.
  • the operation is determined according to the rules of the second mode or the fourth mode.
  • step S15 contrary to the rules of the second mode or the fourth mode, the indoor unit 20A continues to operate in either case.
  • step S13 the operation is determined according to the rule of the first mode or the third mode, the cooling operation of the indoor unit 20A is continued, and the heating operation of the indoor unit 20B is not performed.
  • step S15 the operation of the indoor unit 20A (the evaporator phase or the ventilation phase of the cleaning operation, or the ventilation operation) is continued in either case according to the rules of the first mode or the third mode.
  • step S31 the control unit 50 determines whether at least one of the indoor units 20B and 20C installed in the room B and the room C is in the air conditioning operation or the cleaning operation. to judge whether In step S31, the control unit 50 also determines whether the cleaning operation in the indoor unit 20A and the air conditioning operation or cleaning operation in at least one of the indoor units 20B and 20C are requested at the same time.
  • “simultaneously” includes not only the case of being performed at the same time, but also the case where the indoor units 20B and 20C are in a preparatory state before starting the air-conditioning operation or the cleaning operation.
  • the indoor unit 20A may be performing the air conditioning operation, or may not be performing any operation. In the following description, it is assumed that the indoor unit 20A was in a dormant state in which no operation was being performed when the cleaning operation was requested.
  • step S32 the control unit 50 determines whether at least one of the indoor units 20B and 20C is performing the heating operation or the condenser phase of the cleaning operation.
  • step S32 the control unit 50 also determines whether the cleaning operation in the indoor unit 20A and the heating operation in at least one of the indoor units 20B and 20C are requested at the same time.
  • “simultaneously” includes not only the case where the operations are performed at the same time, but also the case where the indoor units 20B and 20C are in a preparatory state before starting the heating operation.
  • step S33 the control unit 50 starts the cleaning operation of the indoor unit 20A in violation of the rule of the fourth mode, which is given priority over the second mode, and stops the operation of the indoor unit 20B (during the heating operation or the cleaning operation). condenser phase). Specifically, the four-way switching valve 2 is switched to the dotted line position shown in FIG. 1 to close the electric expansion valves EVB and EVC.
  • the rotation speed of the compressor 11, the rotation speed of the outdoor fan 15, and the rotation speed of the A room fan 25A are adjusted to values suitable for the evaporator phase of the cleaning operation in the indoor unit 20A, and the flap 120 of the indoor unit 20A is adjusted.
  • the outlet 110 is moved to a position where it opens.
  • the indoor fan 25B is stopped, and the flap 120 of the indoor unit 20B is moved to a position where the outlet 110 is closed.
  • the multi-type air conditioner 1 then sequentially shifts to the ventilation phase (S2) and the condenser phase (S3) of the cleaning operation described with reference to FIG. .
  • step S33 the control unit 50 notifies the user by displaying "operation will be stopped due to mode conflict with another room" by the display unit or the remote control of the indoor unit 20B of the B room.
  • step S32 If the conditions in step S32 are not met (S32: NO), the process proceeds to step S34.
  • the indoor unit 20C is not operating in a hibernation state.
  • the indoor unit 20B is executing the cooling operation, the air blowing operation, or the evaporator phase or the air blowing phase of the cleaning operation.
  • the control unit 50 starts the cleaning operation of the indoor unit 20A, contrary to the rule of the fourth mode that takes precedence over the second mode, and operates the indoor unit 20B (cooling operation, blowing operation, Or interrupt the evaporator phase or blower phase of the cleaning operation.
  • the indoor fan 25B is stopped, and the flap 120 of the indoor unit 20B is moved to a position where the outlet 110 is closed. Furthermore, if necessary, the electric expansion valve EVB is closed, the four-way switching valve 2 is switched to the position indicated by the dotted line in FIG. is adjusted to a value suitable for the evaporator phase of the cleaning operation in the indoor unit 20A, and the flap 120 of the indoor unit 20A is moved to a position where the outlet 110 opens.
  • the multi-type air conditioner 1 then sequentially shifts to the ventilation phase (S2) and the condenser phase (S3) of the cleaning operation described with reference to FIG. .
  • step S34 the control section 50 notifies the user by displaying "operation will be stopped due to mode conflict with another room" by the display section or remote control of the indoor unit 20B of the B room.
  • step S31 If the conditions in step S31 are not met (S31: NO), neither of the indoor units 20B and 20C is in operation.
  • the controller 50 starts the cleaning operation of the indoor unit 20A in step S37. Specifically, the four-way switching valve 2 is switched to the position indicated by the dotted line in FIG. 1, the compressor 11 is started to operate, and the electric expansion valve EVA is opened to a predetermined degree of opening. Further, the flap 120 of the indoor unit 20A is moved to the position where the outlet 110 is opened. Thereafter, the multi-type air conditioner 1 sequentially shifts to the ventilation phase (S2) and the condenser phase (S3) of the cleaning operation described with reference to FIG. Then, when the condenser phase ends, the multi-type air conditioner 1 enters a resting state.
  • S2 ventilation phase
  • S3 condenser phase
  • the cleaning operation in the indoor unit 20A is requested, the operation is the same as described in FIG. In these cases, in steps S33 and S34, the operation is determined according to the rules of the second mode or third mode.
  • the multi-type air conditioner 1 of the present embodiment is in the first mode, the fourth mode, the fifth mode, the first mode and the fourth mode, the first mode and the fifth mode, or the second mode and the fourth mode.
  • the operation when the cleaning operation in the indoor unit 20A is requested is also the same as described with reference to FIG. In these cases, in steps S33 and S34, the operation is determined to violate the rules of the first mode or the fourth mode.
  • the cooling operation request in the indoor unit 20A and the heating operation in the indoor unit 20B When there is an operation request at the same time, the indoor unit 20B performs the heating operation without performing the cooling operation in the indoor unit 20A. In this way, when the cooling operation and the heating operation collide with each other, the operation according to the operation mode enables operation according to the user's intention.
  • the request for the cleaning operation in the indoor unit 20A and the request for the heating operation in the indoor unit 20B are made at the same time.
  • the cleaning operation is performed in the indoor unit 20A without performing the heating operation in the indoor unit 20B. Therefore, regardless of the operation mode, it is possible to meet the user's request for cleaning operation.
  • step S14 may be changed so as to determine whether at least one of the indoor units 20A and 20C is in the cleaning operation or the air blowing operation. In this case, even when the indoor unit 20A of the room A is in the condenser phase of the cleaning operation in step S15, this is continued. Then, steps S17 and S18 are executed after step S15.

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Abstract

Disclosed is an air conditioner 1 provided with an outdoor unit 10, a first indoor unit 20a that includes a first indoor heat exchanger 24A, a second indoor unit 20B that includes a second indoor heat exchanger 24B, and a control unit. The control unit 50 is able to carry out a cleaning operation with the first indoor unit 20A, which includes causing the first indoor heat exchanger 24A to function as an evaporator, and cleaning the first indoor heat exchanger 24A, and a heating operation with the second indoor unit 20B, in which the second indoor heat exchanger 24B is made to function as a condenser. When a request for a cleaning operation with the first indoor unit 20A and a request for a heating operation with the second indoor unit 20B occur simultaneously, the control unit 50 executes the cleaning operation with the first indoor unit 20A without executing the heating operation with the second indoor unit 20B. Thus, it is possible to fulfill a user's request regarding a cleaning operation.

Description

空気調和機air conditioner
　本開示は、空気調和機に関する。 The present disclosure relates to air conditioners.
　空気中の水分を室内熱交換器の表面に結露又は着霜させ、その水分で室内熱交換器を洗浄処理する空気調和機が知られている。また、特許文献１には、１台の室外機と複数台の室内機とを有するマルチ型空気調和機において、所定の条件が成立すると、複数の室内熱交換器での洗浄処理を行う時間帯の少なくとも一部を重ねるようにすることが開示されている。 Air conditioners are known in which moisture in the air is condensed or frosted on the surface of an indoor heat exchanger, and the moisture is used to clean the indoor heat exchanger. Further, in Patent Document 1, in a multi-type air conditioner having one outdoor unit and a plurality of indoor units, when a predetermined condition is established, a time period in which cleaning processing is performed in a plurality of indoor heat exchangers It is disclosed to overlap at least a portion of the.
特許第６７８６０１９号公報Japanese Patent No. 6786019
　特許文献１には、複数の室内熱交換器で洗浄処理（洗浄運転）中である場合に、その中の一台の室内機に空調運転の指令があれば、複数の室内熱交換器での洗浄運転を中止し、指令を受けた室内機の空調運転を実行することが開示されている。しかし、特許文献１には、ある室内機での洗浄運転と、別の室内機での暖房運転とを同時に実行させる要求があったときの制御について何ら開示されていない。このような場合、室内熱交換器を蒸発器として機能させる洗浄運転と、室内熱交換器を凝縮器として機能させる暖房運転とを同時に実行できないため、暖房運転を実行すると、ユーザの洗浄運転に対する要求を満たすことができない。 In Patent Document 1, when a plurality of indoor heat exchangers are in the process of cleaning (cleaning operation), if one of the indoor units receives an air conditioning operation command, the plurality of indoor heat exchangers It is disclosed that the cleaning operation is stopped and the air conditioning operation of the indoor unit that has received the instruction is performed. However, Patent Literature 1 does not disclose any control when there is a request to simultaneously perform a cleaning operation in a certain indoor unit and a heating operation in another indoor unit. In such a case, since the cleaning operation in which the indoor heat exchanger functions as an evaporator and the heating operation in which the indoor heat exchanger functions as a condenser cannot be performed at the same time, when the heating operation is performed, the user's request for the cleaning operation cannot be satisfied.
　本開示の目的は、ある室内機での洗浄運転の要求と、別の室内機での暖房運転の要求とが同時にあったとき、ユーザの洗浄運転に対する要求を満たすことができる空気調和機を提供することである。 An object of the present disclosure is to provide an air conditioner that can meet a user's request for a cleaning operation when there is a request for a cleaning operation in a certain indoor unit and a request for a heating operation in another indoor unit at the same time. It is to be.
　本開示に係る空調室内機は、室外熱交換器を含む室外機と、前記室外機に冷媒配管を介して接続されており、第１室内熱交換器を含む第１室内機と、前記室外機に前記冷媒配管を介して接続されており、第２室内熱交換器を含む第２室内機と、制御部と、を備えている。前記制御部は、前記第１室内熱交換器を蒸発器として機能させて前記第１室内熱交換器を洗浄することを含む、前記第１室内機での洗浄運転、及び、前記第２室内熱交換器を凝縮器として機能させる、前記第２室内機での暖房運転を実行可能であり、前記第１室内機での前記洗浄運転の要求と前記第２室内機での前記暖房運転の要求とが同時にあったとき、前記第２室内機での前記暖房運転を実行せずに前記第１室内機での前記洗浄運転を実行する。 An air conditioner indoor unit according to the present disclosure is connected to an outdoor unit including an outdoor heat exchanger, the first indoor unit including a first indoor heat exchanger, and the outdoor unit connected to the outdoor unit via a refrigerant pipe. through the refrigerant pipe, a second indoor unit including a second indoor heat exchanger, and a control unit. The control unit performs a cleaning operation in the first indoor unit and the second indoor heat, including cleaning the first indoor heat exchanger by causing the first indoor heat exchanger to function as an evaporator. A heating operation can be performed in the second indoor unit by causing the exchanger to function as a condenser, and the request for the cleaning operation in the first indoor unit and the request for the heating operation in the second indoor unit at the same time, the cleaning operation is performed in the first indoor unit without performing the heating operation in the second indoor unit.
　本開示によると、第１室内機での洗浄運転を実行することにより、ユーザの洗浄運転への要望を満たすことができる。 According to the present disclosure, by executing the cleaning operation in the first indoor unit, it is possible to meet the user's request for the cleaning operation.
　本開示において、「第１室内機での前記洗浄運転の要求と前記第２室内機での前記暖房運転の要求とが同時にあったとき」は、第１室内機での洗浄運転が先に要求され且つ第２室内機での暖房運転の要求があった時点で第１室内機が洗浄運転開始前の準備状態となっている場合、第２室内機での暖房運転が先に要求され且つ第１室内機での洗浄運転の要求があった時点で第２室内機が暖房運転開始前の準備状態となっている場合、及び、第１室内機での洗浄運転と第２室内機での暖房運転とが同時に要求された場合をすべて含むものとする。 In the present disclosure, when "the request for the cleaning operation in the first indoor unit and the request for the heating operation in the second indoor unit are made at the same time", the cleaning operation in the first indoor unit is requested first. and when the first indoor unit is in a preparatory state before the start of the cleaning operation at the time when the heating operation is requested in the second indoor unit, the heating operation in the second indoor unit is requested first and the first When there is a request for cleaning operation in the first indoor unit and the second indoor unit is in a preparatory state before the start of heating operation, and cleaning operation in the first indoor unit and heating in the second indoor unit It includes all cases where driving is requested at the same time.
　本開示の空気調和機において、前記制御部は、、前記第１室内熱交換器を蒸発器として機能させる、前記第１室内機での冷房運転を実行可能であり、前記第１室内機での前記冷房運転の要求と前記第２室内機での前記暖房運転の要求とが同時にあったとき、前記第１室内機での前記冷房運転を実行せずに前記第２室内機での前記暖房運転を実行可能であってよい。 In the air conditioner of the present disclosure, the control unit is capable of executing cooling operation in the first indoor unit, causing the first indoor heat exchanger to function as an evaporator, and When there is a request for the cooling operation and a request for the heating operation in the second indoor unit at the same time, the heating operation is performed in the second indoor unit without executing the cooling operation in the first indoor unit. may be executable.
　本開示の空気調和機において、前記制御部は、前記第１室内機での空調運転として、前記第１室内熱交換器を凝縮器として機能させる暖房運転と、前記第１室内熱交換器を蒸発器として機能させる冷房運転とを実行可能であり、前記第２室内機での空調運転として、前記第２室内熱交換器を凝縮器として機能させる前記暖房運転に加えて、前記第２室内熱交換器を蒸発器として機能させる冷房運転を実行可能であると共に、前記第２室内熱交換器を蒸発器として機能させて前記第２室内熱交換器を洗浄することを含む、前記第２室内機での洗浄運転を実行可能であり、前記制御部は、前記空調運転の要求及び前記洗浄運転の要求を運転要求としたとき、前記第１室内機での前記空調運転又は前記洗浄運転の要求と前記第２室内機での前記空調運転又は前記洗浄運転の要求とが同時にあったとき、前記第１室内機での前記運転要求及び前記第２室内機での前記運転要求のうちで先に行われた前記運転要求に係る運転を優先して実行する第１モード、及び、後に行われた前記運転要求に係る運転を優先して実行する第２モードでの動作が可能であってよい。 In the air conditioner of the present disclosure, the control unit performs, as the air conditioning operation in the first indoor unit, a heating operation in which the first indoor heat exchanger functions as a condenser, and an evaporating operation in which the first indoor heat exchanger is operated. In addition to the heating operation in which the second indoor heat exchanger functions as a condenser, the second indoor heat exchange can be performed as the air conditioning operation in the second indoor unit. The second indoor unit is capable of executing a cooling operation in which the second indoor heat exchanger functions as an evaporator, and includes washing the second indoor heat exchanger by causing the second indoor heat exchanger to function as an evaporator. When the request for the air-conditioning operation and the request for the cleaning operation are the operation requests, the control unit determines the request for the air-conditioning operation or the cleaning operation in the first indoor unit and the request for the cleaning operation. When the request for the air conditioning operation or the cleaning operation for the second indoor unit is made at the same time, the operation request for the first indoor unit and the operation request for the second indoor unit are made first. It may be possible to operate in a first mode in which the operation according to the operation request is preferentially executed, and in a second mode in which the operation according to the operation request performed later is preferentially executed.
　このとき、前記制御部は、前記第１モードで動作している場合において、前記第２室内機での前記暖房運転中に前記第１室内機での前記洗浄運転が要求されたとき、前記第２室内機での前記暖房運転を中断して前記第１室内機での前記洗浄運転を実行してよい。 At this time, when the control unit is operating in the first mode, when the cleaning operation in the first indoor unit is requested during the heating operation in the second indoor unit, the first The heating operation in the second indoor unit may be interrupted and the cleaning operation in the first indoor unit may be performed.
　また、前記制御部は、前記第１モードで動作している場合において、前記第１室内機での前記洗浄運転中に前記第２室内機での前記暖房運転が要求されたとき、前記第２室内機での前記暖房運転を実行せずに前記第１室内機での前記洗浄運転を継続してよい。 Further, when the control unit is operating in the first mode, when the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit, the second The cleaning operation in the first indoor unit may be continued without executing the heating operation in the indoor unit.
　また、前記制御部は、前記第２モードで動作している場合において、前記第１室内機での前記洗浄運転中に前記第２室内機での前記暖房運転中が要求されたとき、前記第２室内機での前記暖房運転を実行せずに前記第１室内機での前記洗浄運転を継続してよい。 Further, in the case where the control unit is operating in the second mode, when the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit, the second The cleaning operation in the first indoor unit may be continued without executing the heating operation in the second indoor unit.
　また、前記制御部は、前記第２モードで動作している場合において、前記第２室内機での前記暖房運転中に前記第１室内機での前記洗浄運転中が要求されたとき、前記第２室内機での前記暖房運転を中断して前記第１室内機での前記洗浄運転を実行してよい。 Further, when the control unit is operating in the second mode, when the cleaning operation in the first indoor unit is requested during the heating operation in the second indoor unit, the second The heating operation in the second indoor unit may be interrupted and the cleaning operation in the first indoor unit may be performed.
　本開示の空気調和機において、前記制御部は、前記第１室内機での空調運転として、前記第１室内熱交換器を凝縮器として機能させる暖房運転と、前記第１室内熱交換器を蒸発器として機能させる冷房運転とを実行可能であり、前記第２室内機での空調運転として、前記第２室内熱交換器を凝縮器として機能させる前記暖房運転に加えて、前記第２室内熱交換器を蒸発器として機能させる冷房運転を実行可能であると共に、前記第２室内熱交換器を蒸発器として機能させて前記第２室内熱交換器を洗浄することを含む、前記第２室内機での洗浄運転を実行可能であり、前記制御部は、前記空調運転の要求及び前記洗浄運転の要求を運転要求としたとき、前記第１室内機での前記空調運転又は前記洗浄運転の要求と前記第２室内機での前記空調運転又は前記洗浄運転の要求とが同時にあったとき、前記第１室内機での前記運転要求に係る運転を優先して実行する第３モード、及び、前記第２室内機での前記運転要求に係る運転を優先して実行する第４モードでの動作が可能であってよい。 In the air conditioner of the present disclosure, the control unit performs, as the air conditioning operation in the first indoor unit, a heating operation in which the first indoor heat exchanger functions as a condenser, and an evaporating operation in which the first indoor heat exchanger is operated. In addition to the heating operation in which the second indoor heat exchanger functions as a condenser, the second indoor heat exchange can be performed as the air conditioning operation in the second indoor unit. The second indoor unit is capable of executing a cooling operation in which the second indoor heat exchanger functions as an evaporator, and includes washing the second indoor heat exchanger by causing the second indoor heat exchanger to function as an evaporator. When the request for the air-conditioning operation and the request for the cleaning operation are the operation requests, the control unit determines the request for the air-conditioning operation or the cleaning operation in the first indoor unit and the request for the cleaning operation. a third mode in which, when a request for the air conditioning operation or the cleaning operation in the second indoor unit is received at the same time, the operation according to the operation request in the first indoor unit is preferentially executed; It may be possible to operate in a fourth mode in which the indoor unit preferentially executes the operation according to the operation request.
　このとき、前記制御部は、前記第４モードで動作している場合において、前記第１室内機での前記洗浄運転中に前記第２室内機での前記暖房運転中が要求されたとき、前記第２室内機での前記暖房運転を実行せずに前記第１室内機での洗浄運転を継続し、前記第２室内機での前記暖房運転中に前記第１室内機での前記洗浄運転が要求されたとき、前記第２室内機での暖房運転を中断して前記第１室内機での洗浄運転を実行してよい。 At this time, when operating in the fourth mode, when the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit, the control unit The cleaning operation in the first indoor unit is continued without executing the heating operation in the second indoor unit, and the cleaning operation in the first indoor unit is performed during the heating operation in the second indoor unit. When requested, the heating operation in the second indoor unit may be interrupted and the cleaning operation in the first indoor unit may be performed.
　また、前記制御部は、前記第３モードで動作している場合において、前記第１室内機での前記洗浄運転中に前記第２室内機での前記暖房運転が要求されたとき、前記第１室内機での前記洗浄運転を継続し前記第２室内機での前記暖房運転を実行せず、前記第２室内機での前記暖房運転中に前記第１室内機での前記洗浄運転中が要求されたとき、前記第１室内機での前記洗浄運転を実行し前記第２室内機での前記暖房運転を中断してよい。 Further, when the control unit is operating in the third mode, when the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit, the first It is requested that the cleaning operation in the indoor unit is continued and the heating operation is not performed in the second indoor unit, and that the cleaning operation in the first indoor unit is in progress during the heating operation in the second indoor unit. When it is done, the cleaning operation in the first indoor unit may be performed and the heating operation in the second indoor unit may be interrupted.
　本開示の空気調和機において、前記制御部は、前記第１室内機での空調運転として、前記第１室内熱交換器を凝縮器として機能させる暖房運転と、前記第１室内熱交換器を蒸発器として機能させる冷房運転とを実行可能であり、前記第２室内機での空調運転として、前記第２室内熱交換器を凝縮器として機能させる前記暖房運転に加えて、前記第２室内熱交換器を蒸発器として機能させる冷房運転を実行可能であると共に、前記第２室内熱交換器を蒸発器として機能させて前記第２室内熱交換器を洗浄することを含む、前記第２室内機での洗浄運転を実行可能であり、前記制御部は、前記空調運転の要求及び前記洗浄運転の要求を運転要求としたとき、前記第１室内機での前記空調運転又は前記洗浄運転の要求と前記第２室内機での前記空調運転又は前記洗浄運転の要求とが同時にあったとき、前記第１室内機での前記運転要求及び前記第２室内機での前記運転要求のうちで先に行われた前記運転要求に係る運転を優先して実行する第１モード、後に行われた前記運転要求に係る運転を優先して実行する第２モード、前記第１室内機での前記運転要求に係る運転を優先して実行する第３モード、及び、前記第２室内機での前記運転要求に係る運転を優先して実行してよい。 In the air conditioner of the present disclosure, the control unit performs, as the air conditioning operation in the first indoor unit, a heating operation in which the first indoor heat exchanger functions as a condenser, and an evaporating operation in which the first indoor heat exchanger is operated. In addition to the heating operation in which the second indoor heat exchanger functions as a condenser, the second indoor heat exchange can be performed as the air conditioning operation in the second indoor unit. The second indoor unit is capable of executing a cooling operation in which the second indoor heat exchanger functions as an evaporator, and includes washing the second indoor heat exchanger by causing the second indoor heat exchanger to function as an evaporator. When the request for the air-conditioning operation and the request for the cleaning operation are the operation requests, the control unit determines the request for the air-conditioning operation or the cleaning operation in the first indoor unit and the request for the cleaning operation. When the request for the air conditioning operation or the cleaning operation for the second indoor unit is made at the same time, the operation request for the first indoor unit and the operation request for the second indoor unit are made first. a first mode for preferentially executing the operation according to the operation request, a second mode for preferentially executing the operation according to the later operation request, and the operation according to the operation request in the first indoor unit. and the operation according to the operation request in the second indoor unit may be preferentially executed.
　このとき、前記制御部は、前記第１モード且つ前記第４モードで動作している場合において、前記第１室内機での前記洗浄運転中に前記第２室内機での前記暖房運転が要求されたとき、前記第１室内機での前記洗浄運転を継続し前記第２室内機での前記暖房運転を実行せず、前記第２室内機での前記暖房運転中に前記第１室内機での前記洗浄運転が要求されたとき、前記第１室内機での前記洗浄運転を実行して前記第２室内機での前記暖房運転を中断してよい。 At this time, when the control unit operates in the first mode and the fourth mode, the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit. when the cleaning operation in the first indoor unit is continued, the heating operation in the second indoor unit is not performed, and the heating operation in the first indoor unit is performed during the heating operation in the second indoor unit. When the cleaning operation is requested, the cleaning operation in the first indoor unit may be performed and the heating operation in the second indoor unit may be interrupted.
　また、前記制御部は、前記第２モード且つ前記第３モードで動作している場合において、前記第１室内機での前記洗浄運転中に前記第２室内機での前記暖房運転が要求されたとき、前記第１室内機での前記洗浄運転を継続し前記第２室内機での前記暖房運転を実行せず、前記第２室内機での前記暖房運転中に前記第１室内機での前記洗浄運転が要求されたとき、前記第１室内機での前記洗浄運転を実行して前記第２室内機での前記暖房運転を中断してよい。 Further, when the controller operates in the second mode and the third mode, the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit. when the cleaning operation in the first indoor unit is continued and the heating operation in the second indoor unit is not performed, and the heating operation in the first indoor unit is performed during the heating operation in the second indoor unit When the cleaning operation is requested, the cleaning operation in the first indoor unit may be performed and the heating operation in the second indoor unit may be interrupted.
　また、前記制御部は、前記第１モード且つ前記第３モードで動作している場合において、前記第１室内機での前記洗浄運転中に前記第２室内機での前記暖房運転が要求されたとき、前記第１室内機での前記洗浄運転を継続し前記第２室内機での前記暖房運転を実行せず、前記第２室内機での前記暖房運転中に前記第１室内機での前記洗浄運転が要求されたとき、前記第１室内機での前記洗浄運転を実行して前記第２室内機での前記暖房運転を中断してよい。 Further, when the controller operates in the first mode and the third mode, the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit. when the cleaning operation in the first indoor unit is continued and the heating operation in the second indoor unit is not performed, and the heating operation in the first indoor unit is performed during the heating operation in the second indoor unit When the cleaning operation is requested, the cleaning operation in the first indoor unit may be performed and the heating operation in the second indoor unit may be interrupted.
　また、前記制御部は、前記第２モード且つ前記第４モードで動作している場合において、前記第１室内機での前記洗浄運転中に前記第２室内機での前記暖房運転が要求されたとき、前記第１室内機での前記洗浄運転を継続し前記第２室内機での暖房運転を実行せず、前記第２室内機での前記暖房運転中に前記第１室内機での前記洗浄運転が要求されたとき、前記第１室内機での前記洗浄運転を実行して前記第２室内機での前記暖房運転を中断してよい。 Further, when the controller operates in the second mode and the fourth mode, the heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit. when the washing operation in the first indoor unit is continued and the heating operation in the second indoor unit is not performed, and the washing in the first indoor unit is performed during the heating operation in the second indoor unit. When operation is requested, the cleaning operation in the first indoor unit may be performed and the heating operation in the second indoor unit may be interrupted.
本開示の一実施形態に係るマルチ型空気調和機の構成図である。1 is a configuration diagram of a multi-type air conditioner according to an embodiment of the present disclosure; FIG. 図１に示す室内機の斜め下方から見た外観図である。FIG. 2 is an external view of the indoor unit shown in FIG. 1 as viewed obliquely from below; 図１に示すマルチ型空気調和機のブロック図である。FIG. 2 is a block diagram of the multi-type air conditioner shown in FIG. 1; 洗浄運転のフローチャートである。It is a flow chart of washing operation. 図１に示すマルチ型空気調和機において、暖房運転の要求があったときの動作を説明するフローチャートである。2 is a flowchart for explaining the operation of the multi-type air conditioner shown in FIG. 1 when a heating operation is requested. 図１に示すマルチ型空気調和機において、洗浄運転の要求があったときの動作を説明するフローチャートである。FIG. 2 is a flowchart for explaining the operation of the multi-type air conditioner shown in FIG. 1 when a cleaning operation is requested; FIG.
（全体構造）
　以下、本開示の実施形態について図面を参照しつつ説明する。図１には、本開示の一実施形態に係るマルチ型空気調和機１の構成図が示されている。マルチ型空気調和機１は、図１に示すように、室外機１０と、３つの室内機２０Ａ、２０Ｂ、２０Ｃとを含んでおり、各室内機２０Ａ、２０Ｂ、２０Ｃが、冷媒が通過する冷媒配管を介して室外機１０に接続されている。室内機２０Ａは、Ａ室熱交換器２４Ａ及びＡ室ファン２５Ａを有している。室内機２０Ｂは、Ｂ室熱交換器２４Ｂ及びＢ室ファン２５Ｂを有している。室内機２０Ｃは、Ｃ室熱交換器２４Ｃ及びＣ室ファン２５Ｃを有している。なお、本実施形態では、室内機を３台としているが、室内機の台数は２台以上の任意の数とすることができる。また、以下の説明において、室内機２０Ａが設置された部屋をＡ室、２０Ｂが設置された部屋をＢ室、２０Ｃが設置された部屋をＣ室と称することとする。 (Overall structure)
Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. FIG. 1 shows a configuration diagram of a multi-type air conditioner 1 according to an embodiment of the present disclosure. As shown in FIG. 1, the multi-type air conditioner 1 includes an outdoor unit 10 and three indoor units 20A, 20B, and 20C. It is connected to the outdoor unit 10 via piping. The indoor unit 20A has an A-room heat exchanger 24A and an A-room fan 25A. The indoor unit 20B has a B room heat exchanger 24B and a B room fan 25B. The indoor unit 20C has a C-room heat exchanger 24C and a C-room fan 25C. In this embodiment, the number of indoor units is three, but the number of indoor units can be any number of two or more. Also, in the following description, the room in which the indoor unit 20A is installed is called room A, the room in which 20B is installed is called room B, and the room in which the indoor unit 20C is installed is called room C.
　室外機１０は、圧縮機１１と、四路切換弁１２と、室外熱交換器１３と、室外ファン１５と、アキュムレータ１６と、３つの電動膨脹弁ＥＶＡ、ＥＶＢ、ＥＶＣとを含んでいる。四路切換弁１２の４つのポートの１つが圧縮機１１の吐出側に接続され、別の１つが室外熱交換器１３の一端に接続され、さらに別の１つがアキュムレータ１６の一端に接続され、さらに別の１つが３つの冷媒配管接続部１８Ａ、１８Ｂ、１８Ｃを介してＡ室熱交換器２４Ａ、Ｂ室熱交換器２４Ｂ及びＣ室熱交換器２４Ｃの一端に接続されている。室外熱交換器１３の他端は、３つの電動膨脹弁ＥＶＡ、ＥＶＢ、ＥＶＣの一端に接続されている。３つの電動膨脹弁ＥＶＡ、ＥＶＢ、ＥＶＣの他端は、それぞれ、３つの冷媒配管接続部１７Ａ、１７Ｂ、１７Ｃを介して、Ａ室熱交換器２４Ａ、Ｂ室熱交換器２４Ｂ及びＣ室熱交換器２４Ｃの他端に接続されている。アキュムレータ１６の他端は、圧縮機１１の吸入側に接続されている。Ａ室熱交換器２４Ａ、Ｂ室熱交換器２４Ｂ、Ｃ室熱交換器２４Ｃの近傍には、Ａ室ファン２５Ａ、Ｂ室ファン２５Ｂ、Ｃ室ファン２５Ｃがそれぞれ配置されている。Ａ室ファン２５Ａは、Ａ室ファンモータ２６Ａ（図３参照）によって駆動される。Ｂ室ファン２５Ｂ、Ｃ室ファン２５Ｃも、それぞれ図示しない室内ファンモータによって駆動される。 The outdoor unit 10 includes a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an outdoor fan 15, an accumulator 16, and three electric expansion valves EVA, EVB, EVC. One of the four ports of the four-way switching valve 12 is connected to the discharge side of the compressor 11, another one is connected to one end of the outdoor heat exchanger 13, and another one is connected to one end of the accumulator 16, Yet another one is connected to one end of A-chamber heat exchanger 24A, B-chamber heat exchanger 24B and C-chamber heat exchanger 24C via three refrigerant pipe connections 18A, 18B, 18C. The other end of the outdoor heat exchanger 13 is connected to one ends of three electric expansion valves EVA, EVB and EVC. The other ends of the three electric expansion valves EVA, EVB, and EVC are connected to the A-compartment heat exchanger 24A, the B-compartment heat exchanger 24B, and the C- compartment heat exchanger 24A, 17B, and 17C, respectively, via three refrigerant pipe connections 17A, 17B, and 17C. connected to the other end of the device 24C. The other end of the accumulator 16 is connected to the suction side of the compressor 11 . An A-room fan 25A, a B-room fan 25B, and a C-room fan 25C are arranged near the A-room heat exchanger 24A, the B-room heat exchanger 24B, and the C-room heat exchanger 24C, respectively. The A room fan 25A is driven by an A room fan motor 26A (see FIG. 3). The B room fan 25B and the C room fan 25C are also driven by indoor fan motors (not shown).
　圧縮機１１と、四路切換弁１２と、室外熱交換器１３と、電動膨脹弁ＥＶＡ、ＥＶＢ、ＥＶＣと、Ａ室熱交換器２４Ａ、Ｂ室熱交換器２４Ｂ及びＣ室熱交換器２４Ｃと、アキュムレータ１６とが、冷媒配管によって接続されて冷媒回路３が形成されている。この冷媒回路３には、冷媒として例えば微燃性のＲ３２が用いられている。 Compressor 11, four-way selector valve 12, outdoor heat exchanger 13, electric expansion valves EVA, EVB, EVC, A-chamber heat exchanger 24A, B-chamber heat exchanger 24B and C-chamber heat exchanger 24C , and an accumulator 16 are connected by refrigerant pipes to form a refrigerant circuit 3 . The refrigerant circuit 3 uses, for example, slightly flammable R32 as a refrigerant.
　圧縮機１１の吐出側には、吐出管温度センサ３１が配置されている。また、室外熱交換器１３には室外熱交換器温度を検出する室外熱交換器温度センサ３２が配置されていると共に、室外熱交換器１３の近傍には室外温度を検出する室外温度センサ３３が配置されている。 A discharge pipe temperature sensor 31 is arranged on the discharge side of the compressor 11 . An outdoor heat exchanger temperature sensor 32 for detecting the outdoor heat exchanger temperature is arranged in the outdoor heat exchanger 13, and an outdoor temperature sensor 33 for detecting the outdoor temperature is arranged near the outdoor heat exchanger 13. are placed.
　Ａ室熱交換器２４Ａには、室内熱交換器温度を検出するＡ室熱交換器温度センサ４５Ａが配置され、Ａ室熱交換器２４Ａの近傍には、室内温度を検出するＡ室温度センサ４６Ａ及び室内湿度を検出するＡ室湿度センサ４７Ａが配置されている。Ｂ室熱交換器２４Ｂには、室内熱交換器温度を検出するＢ室熱交換器温度センサ４５Ｂが配置され、Ｂ室熱交換器２４Ｂの近傍には、室内温度を検出するＢ室温度センサ４６Ｂ及び室内湿度を検出するＢ室湿度センサ４７Ｂが配置されている。また、Ｃ室熱交換器２４Ｃには、室内熱交換器温度を検出するＣ室熱交換器温度センサ４５Ｃが配置され、Ｃ室熱交換器２４Ｃの近傍には、室内温度を検出するＣ室温度センサ４６Ｃ及び室内湿度を検出するＣ室湿度センサ４７Ｃが配置されている。 An A-room heat exchanger temperature sensor 45A for detecting the indoor heat exchanger temperature is arranged in the A-room heat exchanger 24A, and an A-room temperature sensor 46A for detecting the indoor temperature is arranged near the A-room heat exchanger 24A. and an A room humidity sensor 47A for detecting indoor humidity. A B-room heat exchanger temperature sensor 45B for detecting the indoor heat exchanger temperature is arranged in the B-room heat exchanger 24B, and a B-room temperature sensor 46B for detecting the indoor temperature is arranged near the B-room heat exchanger 24B. and a room B humidity sensor 47B for detecting indoor humidity. A C-chamber heat exchanger temperature sensor 45C for detecting the indoor heat exchanger temperature is arranged in the C-chamber heat exchanger 24C. A sensor 46C and a C-chamber humidity sensor 47C for detecting the indoor humidity are arranged.
　図２は、室内機２０Ａを斜め下方から見た斜視図である。室内機２０Ａは、天井カセットタイプ（天井埋め込み型）の室内機である。なお、本実施形態において、３つの室内機２０Ａ、２０Ｂ、２０Ｃはすべて天井カセットタイプの室内機であるが、一部又は全部が壁掛型や床置き型の室内機であってもよい。 FIG. 2 is a perspective view of the indoor unit 20A viewed obliquely from below. The indoor unit 20A is a ceiling cassette type (ceiling embedded type) indoor unit. In this embodiment, the three indoor units 20A, 20B, and 20C are all ceiling cassette type indoor units, but some or all of them may be wall-mounted or floor-mounted indoor units.
　室内機２０Ａは、図２に示すように、ケーシング本体１０１と、ケーシング本体１０１の下側に取り付けられた矩形状のパネル１０２と、パネル１０２に着脱可能に取り付けられたグリル１０３とを含んでいる。なお、図２では図示省略しているが、パネル１０２の表面には、発光ダイオード（ＬＥＤ）を有しており、光や文字、図形などによってユーザへの報知を行うＡ室表示部２８Ａ(図３参照）が設けられている。 2, the indoor unit 20A includes a casing body 101, a rectangular panel 102 attached to the lower side of the casing body 101, and a grill 103 detachably attached to the panel 102. . Although not shown in FIG. 2, the surface of the panel 102 has light emitting diodes (LEDs), and the A room display unit 28A (see FIG. 3) is provided.
　パネル１０２の長手方向の一方に、パネル１０２の短辺に沿って吹出口１１０が設けられている。また、パネル１０２には、フラップ１２０が取り付けられている。フラップ１２０は、Ａ室フラップ駆動モータ２７Ａ（図３参照）によって駆動されることで所定角度範囲内でパネル１０２に対して回転可能であり、これによって吹出口１１０を開閉できる。図３は、フラップ１２０により吹出口１１０が閉じられた状態を示す。 A blowout port 110 is provided along the short side of the panel 102 on one side in the longitudinal direction of the panel 102 . A flap 120 is attached to the panel 102 . The flap 120 is driven by the A-chamber flap drive motor 27A (see FIG. 3) to be rotatable relative to the panel 102 within a predetermined angular range, thereby opening and closing the outlet 110 . FIG. 3 shows a state where the outlet 110 is closed by the flap 120 .
　ケーシング本体１０１の側壁からは、ドレンソケット１０７が突出している。ドレンソケット１０７には外部からドレンホース(図示せず)が接続される。さらに、ケーシング本体１０１の側壁からは、配管接続部１０５、１０６が突出している。配管接続部１０５、１０６には、外部から冷媒配管(図示せず)が接続される。ケーシング本体１０１からは、吊り金具１１１～１１３が側方に突出している。また、ケーシング本体１０１の近傍には、電装品部１０８が配置されている。 A drain socket 107 protrudes from the side wall of the casing body 101 . A drain hose (not shown) is connected to the drain socket 107 from the outside. Further, pipe connection portions 105 and 106 protrude from side walls of the casing main body 101 . Refrigerant pipes (not shown) are connected to the pipe connection portions 105 and 106 from the outside. Suspension fittings 111 to 113 protrude laterally from the casing main body 101 . Also, an electrical component section 108 is arranged near the casing main body 101 .
（制御系統）
　次に、マルチ型空気調和機１の制御系統について説明する。図３は、本実施形態に係る空気調和機１のブロック図である。なお、本実施形態において３台の室内機２０Ａ、２０Ｂ、２０Ｃは同じ構造を有しているため、ここでは室内機２０Ａを中心に説明することとする。また、図３において室内機２０Ｂ、２０Ｃの図示を簡略化している。 (control system)
Next, the control system of the multi-type air conditioner 1 will be described. FIG. 3 is a block diagram of the air conditioner 1 according to this embodiment. Since the three indoor units 20A, 20B, and 20C have the same structure in this embodiment, the indoor unit 20A will be mainly described here. Also, the illustration of the indoor units 20B and 20C is simplified in FIG.
　室外機１０は、演算装置と記憶装置とを含むマイクロコンピュータ及び入出力回路などからなる室外制御部５１を含んでいる。室内機２０Ａ、２０Ｂ、２０Ｃは、それぞれ、演算装置と記憶装置とを含むマイクロコンピュータ及び入出力回路などからなる室内制御部５２Ａ、５２Ｂ、５２Ｃを含んでいる。室外制御部５１と室内制御部５２Ａとは通信線ＬＡによって接続され、室外制御部５１と室内制御部５２Ｂとは通信線ＬＢによって接続され、室外制御部５１と室内制御部５２Ｃとは通信線ＬＣによって接続されている。室外制御部５１と３つの室内制御部５２Ａ、５２Ｂ、５２Ｃとが通信線ＬＡ、ＬＢ、ＬＣを介して通信を行うことによって、室外制御部５１及び室内制御部５２Ａ、５２Ｂ、５２Ｃがマルチ型空気調和機１の制御部５０として動作する。 The outdoor unit 10 includes an outdoor control unit 51 comprising a microcomputer including an arithmetic device and a storage device, an input/output circuit, and the like. The indoor units 20A, 20B, and 20C respectively include indoor controllers 52A, 52B, and 52C each including a microcomputer including an arithmetic device and a storage device, an input/output circuit, and the like. The outdoor control unit 51 and the indoor control unit 52A are connected by a communication line LA, the outdoor control unit 51 and the indoor control unit 52B are connected by a communication line LB, and the outdoor control unit 51 and the indoor control unit 52C are connected by a communication line LC. connected by The outdoor controller 51 and the three indoor controllers 52A, 52B, and 52C communicate with each other via communication lines LA, LB, and LC, so that the outdoor controller 51 and the indoor controllers 52A, 52B, and 52C operate as multi-type air It operates as the control section 50 of the harmony machine 1 .
　室外制御部５１には、吐出管温度センサ３１、室外熱交換器温度センサ３２、及び、室外温度センサ３３からの温度検出信号が供給される。また、室外制御部５１は、圧縮機１１、四路切換弁１２、室外ファンモータ１４、及び、電動膨脹弁ＥＶＡ、ＥＶＢ、ＥＶＣなどを制御する。 Temperature detection signals from the discharge pipe temperature sensor 31, the outdoor heat exchanger temperature sensor 32, and the outdoor temperature sensor 33 are supplied to the outdoor control unit 51. The outdoor control unit 51 also controls the compressor 11, the four-way switching valve 12, the outdoor fan motor 14, the electric expansion valves EVA, EVB, EVC, and the like.
　室内制御部５２Ａには、Ａ室熱交換器温度センサ４５Ａ、Ａ室温度センサ４６Ａ及びＡ室湿度センサ４７Ａからの検出信号が供給される。また、室内制御部５２Ａは、Ａ室ファンモータ２６Ａ、Ａ室フラップ駆動モータ２７Ａ、Ａ室表示部２８Ａ及びＡ室通信ユニット２９Ａなどを制御する。Ａ室通信ユニット２９Ａは、ユーザによる操作可能な図示しないリモートコントローラ(以下、「リモコン」と言う)との間で無線通信を行う。制御部５０は、リモコンからの指令を受けて空気調和機１の動作を制御する。リモコンは液晶表示ユニット又は発光ダイオード（ＬＥＤ）を有しており、光や文字、図形などによってユーザへの報知を行うことができる。 Detection signals from the A-room heat exchanger temperature sensor 45A, the A-room temperature sensor 46A, and the A-room humidity sensor 47A are supplied to the indoor control unit 52A. The indoor control unit 52A also controls the A-room fan motor 26A, the A-room flap drive motor 27A, the A-room display unit 28A, the A-room communication unit 29A, and the like. The A-room communication unit 29A performs wireless communication with a user-operable remote controller (not shown) (hereinafter referred to as "remote controller"). The control unit 50 controls the operation of the air conditioner 1 in response to commands from the remote controller. The remote control has a liquid crystal display unit or a light emitting diode (LED), and can notify the user by means of light, characters, graphics, or the like.
　本実施形態に係るマルチ型空気調和機１において、制御部５０は、各室内機において、冷房運転及び暖房運転を含む空調運転、Ａ室ファン２５Ａ、Ｂ室ファン２５Ｂ及びＣ室ファン２５Ｃを回転させる送風運転のほか、後述する洗浄運転を実行できる。 In the multi-type air conditioner 1 according to the present embodiment, the control unit 50 rotates the air conditioning operation including the cooling operation and the heating operation, the A room fan 25A, the B room fan 25B and the C room fan 25C in each indoor unit. In addition to the blowing operation, a cleaning operation, which will be described later, can be executed.
　本実施形態に係るマルチ型空気調和機１において、室内機２０Ａで冷房運転を行う場合、室外制御部５１は、四路切換弁１２を図１に示す点線の位置に切り換えて、圧縮機１１の運転を開始する。このとき、室外制御部５１は、電動膨脹弁ＥＶＡを所定の開度に開く一方で、電動膨脹弁ＥＶＢ、ＥＶＣは閉じた状態とする。そして、圧縮機１１から吐出した高温高圧のガス冷媒は、室外制御部５１が室外ファン１５を回転させることで、凝縮器として機能する室外熱交換器１３において室外空気との熱交換により凝縮して液冷媒となる。次に、室外熱交換器１３からの液冷媒は、電動膨脹弁ＥＶＡで減圧された後、Ａ室熱交換器２４Ａに到達する。室内制御部５２ＡがＡ室ファン２５Ａを運転することで、減圧された液冷媒は、蒸発器として機能するＡ室熱交換器２４Ａにおいて室内空気との熱交換により蒸発してガス冷媒となり、圧縮機１１の吸入側に戻る。また、室内制御部５２Ａがフラップ１２０を吹出口１１０が開く位置に移動させることにより、Ａ室熱交換器２４Ａによって冷やされた空気が吹出口１１０から排出される。 In the multi-type air conditioner 1 according to this embodiment, when the indoor unit 20A performs cooling operation, the outdoor control unit 51 switches the four-way switching valve 12 to the position indicated by the dotted line in FIG. start driving. At this time, the outdoor control unit 51 opens the electric expansion valve EVA to a predetermined degree of opening, while closing the electric expansion valves EVB and EVC. The high-temperature and high-pressure gas refrigerant discharged from the compressor 11 is condensed by heat exchange with the outdoor air in the outdoor heat exchanger 13 functioning as a condenser by the outdoor control unit 51 rotating the outdoor fan 15. It becomes a liquid refrigerant. Next, the liquid refrigerant from the outdoor heat exchanger 13 reaches the A-room heat exchanger 24A after being decompressed by the electric expansion valve EVA. When the indoor control unit 52A operates the A-room fan 25A, the decompressed liquid refrigerant evaporates by heat exchange with the indoor air in the A-room heat exchanger 24A functioning as an evaporator, and becomes a gaseous refrigerant. Return to the intake side of 11. Further, the indoor control unit 52A moves the flap 120 to the position where the air outlet 110 opens, so that the air cooled by the room A heat exchanger 24A is discharged from the air outlet 110.
　一方、室内機２０Ａで暖房運転を行う場合、室外制御部５１は、四路切換弁２を図１に示す実線の位置に切り換えて、圧縮機１１の運転を開始する。このとき、室外制御部５１は、すべての電動膨脹弁ＥＶＡ、ＥＶＢ、ＥＶＣをそれぞれ所定の開度に開く。したがって、室内機２０Ａで暖房運転を行うと、それ以外の室内機２０Ｂ、２０Ｃにも高温冷媒が流れ込む。これは暖房運転を実行しない室内機２０Ｂ、２０Ｃ及びその前後の冷媒配管内に冷媒が滞留しないようにするためである。そして、圧縮機１１から吐出した高温高圧のガス冷媒は、室内制御部５２ＡがＡ室ファン２５Ａを運転することで、凝縮器として機能するＡ室熱交換器２４Ａで室内空気との熱交換により凝縮して液冷媒となる。次に、Ａ室熱交換器２４Ａ、Ｂ室熱交換器２４Ｂ及びＣ室熱交換器２４Ｃからの冷媒は、電動膨脹弁ＥＶＡ、ＥＶＢ、ＥＶＣで減圧された後、室外熱交換器１３に到達する。室外制御部５１が室外ファン１５を回転させることで、減圧された冷媒は、蒸発器として機能する室外熱交換器１３において室外空気との熱交換により蒸発してガス冷媒となり、圧縮機１１の吸入側に戻る。また、室内制御部５２Ａがフラップ１２０を吹出口１１０が開く位置に移動させることにより、Ａ室熱交換器２４Ａによって暖められた空気が吹出口１１０から排出される。 On the other hand, when the indoor unit 20A performs the heating operation, the outdoor control unit 51 switches the four-way switching valve 2 to the solid line position shown in FIG. At this time, the outdoor controller 51 opens all the electric expansion valves EVA, EVB, and EVC to predetermined opening degrees. Therefore, when the indoor unit 20A performs the heating operation, the high-temperature refrigerant also flows into the other indoor units 20B and 20C. This is to prevent the refrigerant from staying in the indoor units 20B and 20C that do not perform the heating operation and in the refrigerant pipes before and after them. The high-temperature and high-pressure gas refrigerant discharged from the compressor 11 is condensed by heat exchange with indoor air in the A-room heat exchanger 24A functioning as a condenser by the indoor controller 52A operating the A-room fan 25A. and becomes a liquid refrigerant. Next, the refrigerant from the A-chamber heat exchanger 24A, the B-chamber heat exchanger 24B, and the C-chamber heat exchanger 24C reaches the outdoor heat exchanger 13 after being decompressed by the electric expansion valves EVA, EVB, and EVC. . When the outdoor control unit 51 rotates the outdoor fan 15, the decompressed refrigerant evaporates by exchanging heat with the outdoor air in the outdoor heat exchanger 13 functioning as an evaporator to become a gaseous refrigerant, which is sucked into the compressor 11. back to the side. Further, the indoor control unit 52A moves the flap 120 to the position where the air outlet 110 opens, so that the air warmed by the room A heat exchanger 24A is discharged from the air outlet 110. FIG.
　制御部５０による室外機１０及び室内機２０Ａ、２０Ｂ、２０Ｃの制御内容は、リモコンからの指令によって変更される。ユーザは、リモコンを操作することで、暖房運転と冷房運転の選択、運転開始、運転停止、室内温度及び風量の設定、洗浄運転の開始と停止をマルチ型空気調和機１に対して要求できる。 The details of control of the outdoor unit 10 and the indoor units 20A, 20B, and 20C by the control unit 50 are changed by commands from the remote controller. By operating the remote controller, the user can request the multi-type air conditioner 1 to select heating operation or cooling operation, start operation, stop operation, set room temperature and air volume, and start and stop cleaning operation.
（洗浄運転）
　次に、本実施形態においてマルチ型空気調和機１が実行する洗浄運転の詳細について、図４をさらに参照しつつ説明する。なお、以下の説明は、すべての室内機が運転を停止した状態で１台の室内機２０Ａに対して洗浄運転が要求され、洗浄運転が終了するまで他の室内機２０Ｂ、２０Ｃに対して空調運転が要求されないことを前提としている。 (Washing operation)
Next, details of the cleaning operation performed by the multi-type air conditioner 1 in this embodiment will be described with further reference to FIG. The following description is based on the assumption that the cleaning operation is requested for one indoor unit 20A while all the indoor units are stopped, and the other indoor units 20B and 20C are not air-conditioned until the cleaning operation is completed. It is assumed that no driving is required.
　まず、室内機２０Ａのリモコンが操作されて、室内機２０Ａに対して洗浄運転が要求されると、ステップＳ１において、制御部５０は、洗浄運転の蒸発器フェーズを実行する。詳細には、四路切換弁１２を図１に示す点線の位置に切り換えて圧縮機１１の運転を開始する。また、制御部５０は、Ａ室ファンモータ２６Ａを駆動してＡ室ファン２５Ａを所定回転数で回転させ、Ａ室フラップ駆動モータ２７Ａを駆動してフラップ１２０を吹出口１１０が開く位置に移動させる。このとき、制御部５０は、電動膨脹弁ＥＶＡを所定の開度に開く一方で、電動膨脹弁ＥＶＢ、ＥＶＣは閉じた状態とする。これによって、冷房運転時と同様に、Ａ室熱交換器２４Ａが蒸発器として機能し、洗浄運転の蒸発器フェーズが開始する。Ａ室熱交換器２４Ａの温度が０℃よりも高く露点温度以下になると、Ａ室熱交換器２４Ａの表面に空気中の水分が結露し始める。この結露水によってＡ室熱交換器２４Ａの表面に付着した汚れを洗浄できる。なお、このときＡ室熱交換器２４Ａの温度が氷点以下となるようにして、Ａ室熱交換器２４Ａの表面に空気中の水分を着霜させてもよい。本実施形態において、蒸発器フェーズの長さは、所定時間としている。蒸発器フェーズの長さは、制御部５０が環境条件（Ａ室の室内温度と湿度、室外温度）から計算して求めた、洗浄に必要な量の水分がＡ室熱交換器２４Ａ上に結露するまでの時間であってもよい。蒸発器フェーズが終わると、制御部５０は、圧縮機１１の運転を停止させる。 First, when the remote controller of the indoor unit 20A is operated to request the indoor unit 20A to perform the cleaning operation, the controller 50 executes the evaporator phase of the cleaning operation in step S1. Specifically, the four-way switching valve 12 is switched to the position indicated by the dotted line in FIG. 1, and the operation of the compressor 11 is started. The controller 50 also drives the room A fan motor 26A to rotate the room A fan 25A at a predetermined number of revolutions, and drives the room A flap drive motor 27A to move the flap 120 to the position where the outlet 110 opens. . At this time, the control unit 50 opens the electric expansion valve EVA to a predetermined degree of opening, while closing the electric expansion valves EVB and EVC. As a result, the A-room heat exchanger 24A functions as an evaporator as in the cooling operation, and the evaporator phase of the cleaning operation starts. When the temperature of the A-compartment heat exchanger 24A becomes higher than 0° C. and below the dew point temperature, moisture in the air begins to condense on the surface of the A-compartment heat exchanger 24A. This condensed water can clean the dirt adhering to the surface of the A-chamber heat exchanger 24A. At this time, the temperature of the A-compartment heat exchanger 24A may be kept below the freezing point so that the surface of the A-compartment heat exchanger 24A is frosted with moisture in the air. In this embodiment, the length of the evaporator phase is a predetermined time. The length of the evaporator phase is calculated by the control unit 50 from the environmental conditions (room temperature and humidity of room A, outdoor temperature). It may be the time until After the evaporator phase ends, the controller 50 stops the operation of the compressor 11 .
　次に、ステップＳ２において、制御部５０は、洗浄運転の送風フェーズを実行する。詳細には、ステップＳ１から引き続いて、Ａ室ファンモータ２６Ａを駆動してＡ室ファン２５Ａを回転させる。そして、フラップ１２０の位置をステップＳ１時と同じ位置に維持する。送風フェーズでは、圧縮機１１が停止しているため、Ａ室熱交換器２４Ａの温度が蒸発器フェーズにおけるＡ室熱交換器２４Ａの温度よりも上昇している。そして、通常、Ａ室熱交換器２４Ａの温度は露点温度を超える。Ａ室ファン２５Ａを回転させることによって、Ａ室熱交換器２４Ａ上に結露した水分の蒸発を促進できる。本実施形態において、Ａ室ファン２５Ａの回転数及び送風時間（送風フェーズの長さ）は、一定値に固定されている。なお、送風フェーズでは、Ａ室熱交換器２４Ａの温度が蒸発器フェーズにおけるＡ室熱交換器２４Ａの温度よりも上昇していれば、圧縮機１１を停止させなくてもよい。 Next, in step S2, the controller 50 executes the blowing phase of the cleaning operation. Specifically, following step S1, the room A fan motor 26A is driven to rotate the room A fan 25A. Then, the position of the flap 120 is maintained at the same position as in step S1. Since the compressor 11 is stopped in the blowing phase, the temperature of the A-room heat exchanger 24A is higher than the temperature of the A-room heat exchanger 24A in the evaporator phase. The temperature of the A-compartment heat exchanger 24A usually exceeds the dew point temperature. By rotating the A room fan 25A, the evaporation of the moisture condensed on the A room heat exchanger 24A can be accelerated. In this embodiment, the number of rotations of the A-room fan 25A and the blowing time (the length of the blowing phase) are fixed at constant values. It should be noted that the compressor 11 does not have to be stopped if the temperature of the A-room heat exchanger 24A is higher than the temperature of the A-room heat exchanger 24A in the evaporator phase in the ventilation phase.
　ステップＳ３において、制御部５０は、洗浄運転の凝縮器フェーズを実行する。詳細には、四路切換弁１２を図１に示す実線の位置に切り換えて圧縮機１１の運転を開始する。また、制御部５０は、ステップＳ２から引き続いて、Ａ室ファンモータ２６Ａを駆動してＡ室ファン２５Ａを所定回転数で回転させ、そして、フラップ１２０の位置をステップＳ１時と同じ位置に維持する。このとき、制御部５０は、すべての電動膨脹弁ＥＶＡ、ＥＶＢ、ＥＶＣをそれぞれ所定の開度に開く。これによって、暖房運転時と同様に、Ａ室熱交換器２４Ａが凝縮器として機能し、洗浄運転の凝縮器フェーズが開始する。凝縮器フェーズにおいては、Ａ室熱交換器２４Ａの温度が送風フェーズにおけるＡ室熱交換器２４Ａの温度よりも上昇している。そのため、Ａ室熱交換器２４Ａの表面に残っている水分の蒸発をより一層促進できる。凝縮器フェーズの長さは、所定時間であってよい。凝縮器フェーズが終わると、制御部５０は、圧縮機１１及びＡ室ファン２５Ａを停止させ、Ａ室フラップ駆動モータ２７Ａを駆動してフラップ１２０を吹出口１１０が閉じる位置に移動させる。なお、凝縮器フェーズは、例えばステップＳ２の送風フェーズを十分に長くした場合には省略できる。 At step S3, the controller 50 executes the condenser phase of the cleaning operation. Specifically, the four-way switching valve 12 is switched to the solid line position shown in FIG. 1 to start the operation of the compressor 11 . Continuing from step S2, the controller 50 drives the room A fan motor 26A to rotate the room A fan 25A at a predetermined number of revolutions, and maintains the position of the flap 120 at the same position as in step S1. . At this time, the controller 50 opens all the electric expansion valves EVA, EVB, and EVC to predetermined opening degrees. As a result, the A-room heat exchanger 24A functions as a condenser as in the heating operation, and the condenser phase of the cleaning operation starts. In the condenser phase, the temperature of the A-compartment heat exchanger 24A is higher than the temperature of the A-compartment heat exchanger 24A in the ventilation phase. Therefore, the evaporation of moisture remaining on the surface of the A-compartment heat exchanger 24A can be further accelerated. The length of the condenser phase may be a predetermined amount of time. After the condenser phase ends, the controller 50 stops the compressor 11 and the A-chamber fan 25A, drives the A-chamber flap drive motor 27A, and moves the flap 120 to a position where the outlet 110 is closed. The condenser phase can be omitted, for example, if the blowing phase of step S2 is made sufficiently long.
（運転モード）
　ここで、本実施形態に係るマルチ型空気調和機１において、２台以上の室内機に対して運転を実行させるような要求が同時にあった場合に、いずれを優先させるかについてのユーザが設定可能な運転モードについて説明する。「２台以上の室内機に対して運転を実行させるような要求が同時にあった場合」は、いずれかの室内機での運転が先に要求された場合と、２台以上の室内機での運転が同時に要求された場合との両方を含んでいる。なお、以下の説明において、空調運転の要求及び洗浄運転の要求を運転要求と称する。 (driving mode)
Here, in the multi-type air conditioner 1 according to the present embodiment, the user can set which one is prioritized when there are requests to execute the operation of two or more indoor units at the same time. operation modes. "When there is a request to execute operation for two or more indoor units at the same time", the case where the operation of one of the indoor units is requested first, and the case where two or more indoor units are requested to operate Includes both and when driving is requested at the same time. In the following description, the request for the air conditioning operation and the request for the cleaning operation are referred to as operation requests.
　マルチ型空気調和機１は、いずれの室内機を優先して運転するかに関して、以下に説明する第１から第５までの５つの運転モードを有している。第１モードは、いずれかの室内機２０Ａ、２０Ｂ、２０Ｃでの空調運転又は洗浄運転の要求と、別の室内機２０Ａ、２０Ｂ、２０Ｃでの空調運転又は洗浄運転の要求とが同時にあった場合、先に行われた要求に係る運転を優先して実行するモードであり、第２モードは、後に行われた要求に係る運転を優先して実行するモードである。ユーザは、リモコン又は図示しない集中操作盤などを操作して、第１モードと第２モードのいずれか一方だけを選択できる。例えば、前後する運転要求の一方が暖房運転を、他方が冷房運転を要求するものである場合は、第１モードにおいて後に行われた要求に係る運転を実行することはできない。しかし、前後する運転要求がいずれも冷房運転を要求するものである場合は、第１モードにおいて後に行われた要求に係る冷房運転を実行できる。 The multi-type air conditioner 1 has five operation modes from first to fifth described below regarding which indoor unit is preferentially operated. The first mode is when there is a request for air conditioning operation or cleaning operation in one of the indoor units 20A, 20B, 20C and a request for air conditioning operation or cleaning operation in another indoor unit 20A, 20B, 20C at the same time. , and the second mode is a mode for preferentially executing an operation according to a later request. A user can select either the first mode or the second mode by operating a remote controller or a central control panel (not shown). For example, if one of the successive operation requests requests the heating operation and the other requests the cooling operation, it is not possible to execute the operation related to the subsequent request in the first mode. However, if both of the preceding and succeeding operation requests request the cooling operation, the cooling operation related to the subsequent request can be executed in the first mode.
　第３モードは、室内機２０Ａでの空調運転又は洗浄運転の要求と、別の室内機２０Ｂ、２０Ｃでの空調運転又は洗浄運転の要求とが同時にあった場合、室内機２０Ａでの運転を優先して実行するモードである。同様に、第４モードは、室内機２０Ｂでの運転を優先して実行するモードであり、第５モードは、室内機２０Ｃでの運転を優先して実行するモードである。ユーザは、リモコン又は図示しない集中操作盤などを操作して、第３モードと第４モードと第５モードのいずれか１つだけを選択できる。なお、例えば、第３モードにおいて、室内機２０Ａでの暖房運転の要求と、室内機２０Ｂでの冷房運転の要求とがあった場合は、室内機２０Ａでの暖房運転を実行できるが、室内機２０Ｂでの冷房運転を実行することはできない。しかし、第３モードにおいて、室内機２０Ａでの暖房運転の要求と、室内機２０Ｂでの暖房運転の要求とがあった場合は、いずれの室内機での暖房運転も実行できる。 In the third mode, when there is a request for air conditioning operation or cleaning operation in the indoor unit 20A and a request for air conditioning operation or cleaning operation in the other indoor units 20B and 20C, priority is given to operation in the indoor unit 20A. It is a mode to execute by Similarly, the fourth mode is a mode in which the operation of the indoor unit 20B is preferentially executed, and the fifth mode is a mode in which the operation of the indoor unit 20C is preferentially executed. A user can select only one of the third mode, the fourth mode, and the fifth mode by operating a remote controller or a central control panel (not shown). Note that, for example, in the third mode, when there is a request for the heating operation in the indoor unit 20A and a request for the cooling operation in the indoor unit 20B, the heating operation can be performed in the indoor unit 20A. Cooling operation at 20B cannot be executed. However, in the third mode, if there is a request for the heating operation in the indoor unit 20A and a request for the heating operation in the indoor unit 20B, the heating operation can be performed in either indoor unit.
　本実施形態のマルチ型空気調和機１が例えば第３モードで動作している場合に、先に運転要求された室内機２０Ｂと、後から運転要求された室内機２０Ｃとは、先に運転要求された室内機２０Ｂが優先されるものとする。なお、このような場合、後から運転要求された室内機２０Ｃを優先させてもよい。 When the multi-type air conditioner 1 of the present embodiment is operating, for example, in the third mode, the indoor unit 20B whose operation is requested first and the indoor unit 20C whose operation is requested later are the first to be operated. priority is given to the indoor unit 20B. In such a case, priority may be given to the indoor unit 20C whose operation is requested later.
　本実施形態に係るマルチ型空気調和機１は、第１～第５モードのうちの１つのモードで動作可能であり、さらに第１モード及び第２モードから選択された１つのモードと、第３～第５モードから選択された１つのモードとの２つのモードでも動作できる。そして、もし第１モード及び第２モードから選択された１つのモードと、第３～第５モードから選択された１つのモードとの２つのモードとが衝突する場合、本実施形態においては第３～第５モードが優先される。例えば第１モード且つ第３モードで動作している場合において、先に室内機２０Ｂの冷房運転が要求がされてから室内機２０Ａの暖房運転が要求された場合、第１モードに対して優先される第３モードの規則通りに、室内機２０Ｂの冷房運転を中断して室内機２０Ａの暖房運転を実行する。なお、このような場合、第１～第２モードを優先させてもよい。 The multi-type air conditioner 1 according to the present embodiment can operate in one of the first to fifth modes, and further, one mode selected from the first mode and the second mode, and the third mode. It can also operate in two modes, one mode selected from the fifth mode. Then, if one mode selected from the first mode and the second mode and one mode selected from the third to fifth modes collide with each other, in the present embodiment, the third ~ 5th mode is given priority. For example, when operating in the first mode and the third mode, if the cooling operation of the indoor unit 20B is requested first and then the heating operation of the indoor unit 20A is requested, priority is given to the first mode. The cooling operation of the indoor unit 20B is interrupted and the heating operation of the indoor unit 20A is performed according to the rule of the third mode. In such a case, priority may be given to the first and second modes.
（暖房運転要求時の動作）
　次に、本実施形態に係るマルチ型空気調和機１において、Ｂ室に設置された室内機２０Ｂでの暖房運転が要求されたときの動作について、図５のフローチャートをさらに参照して説明する。以下の各ステップは制御部５０によって実行される。なお、以下の説明では、マルチ型空気調和機１が、第２モード且つ第４モードで動作しているとする。 (Operation when heating operation is requested)
Next, the operation of the multi-type air conditioner 1 according to the present embodiment when the indoor unit 20B installed in room B is requested to perform the heating operation will be described with reference to the flowchart of FIG. Each step below is executed by the control unit 50 . In the following description, it is assumed that the multi-type air conditioner 1 operates in the second mode and the fourth mode.
　室内機２０Ｂでの暖房運転が要求されると、ステップＳ１１において、制御部５０は、Ａ室及びＣ室に設置された室内機２０Ａ、２０Ｃの少なくともいずれかが空調運転中又は洗浄運転中であるかを判断する。ステップＳ１１において、制御部５０は、室内機２０Ｂでの暖房運転と、室内機２０Ａ、２０Ｃの少なくともいずれかでの空調運転又は洗浄運転とが、同時に要求されたかについても判断する。ここでの「同時」は、同じ時刻に行われた場合だけではなく、室内機２０Ａ、２０Ｃが空調運転又は洗浄運転の運転開始前の準備状態になっている場合も含む。なお、暖房運転が要求された時点で、室内機２０Ｂは洗浄運転又は冷房運転を実行していてもよいし、いずれの運転も実行していなくてもよい。以下の説明においては、暖房運転が要求された時点で、室内機２０Ｂはいずれの運転も実行していない休止状態であったと仮定している。 When the heating operation of the indoor unit 20B is requested, in step S11, the control unit 50 determines whether at least one of the indoor units 20A and 20C installed in the A room and the C room is in the air conditioning operation or the cleaning operation. to judge whether In step S11, the control unit 50 also determines whether the heating operation in the indoor unit 20B and the air conditioning operation or the cleaning operation in at least one of the indoor units 20A and 20C are requested at the same time. Here, "simultaneously" includes not only the case of being performed at the same time, but also the case where the indoor units 20A and 20C are in a preparatory state before starting the air-conditioning operation or the cleaning operation. At the time when the heating operation is requested, the indoor unit 20B may be performing the cleaning operation or the cooling operation, or may not be performing either operation. In the following description, it is assumed that the indoor unit 20B was in a dormant state in which no operation was performed when the heating operation was requested.
　この条件に該当する場合（Ｓ１１：ＹＥＳ）、制御部５０は、ステップＳ１２において、室内機２０Ａ、２０Ｃの少なくともいずれかが冷房運転中であるかを判断する。ステップＳ１２において、制御部５０は、室内機２０Ｂでの暖房運転と、室内機２０Ａ、２０Ｃの少なくともいずれかでの冷房運転とが、同時に要求されたかについても判断する。ここでの「同時」は、同じ時刻に行われた場合だけではなく、室内機２０Ａ、２０Ｃが冷房運転の運転開始前の準備状態になっている場合も含む。 If this condition is met (S11: YES), the controller 50 determines in step S12 whether at least one of the indoor units 20A and 20C is in cooling operation. In step S12, the control unit 50 also determines whether the heating operation in the indoor unit 20B and the cooling operation in at least one of the indoor units 20A and 20C are requested at the same time. Here, "simultaneously" includes not only the case where the operation is performed at the same time, but also the case where the indoor units 20A and 20C are in a preparatory state before starting the cooling operation.
　この条件に該当する場合（Ｓ１２：ＹＥＳ）、ステップＳ１３に進む。以下では、室内機２０Ｃは休止状態で運転されておらず、室内機２０Ａだけが運転中であると仮定して説明する。上述したように、マルチ型空気調和機１において第２モード、つまり先に要求された運転を優先させる「後押し優先モード」が有効である。また、第４モードにおいて優先される室内機２０Ｂが暖房運転を要求している。したがって、制御部５０は、第２モード及び第４モードの規則通り、室内機２０Ｂでの暖房運転を開始する。もし、室内機２０Ｂでの暖房運転と、室内機２０Ａでの冷房運転とが同時に要求されたのであれば、第４モードの規則通り、ステップＳ１３において、制御部５０は、室内機２０Ｂでの暖房運転を開始する。マルチ型空気調和機１は、室内機２０Ｂでの暖房運転を実行しつつ次の指示を待機する状態（以下において「暖房運転状態」と称する）となる。この場合、室内機２０Ａでの冷房運転を継続できないので、制御部５０は、ステップＳ１３において、Ａ室の室内機２０Ａの表示部又はリモコンにより、「他室とのモードバッティングにより冷房運転を中断する」旨の表示によるユーザへの報知を行う。 If this condition is met (S12: YES), proceed to step S13. In the following description, it is assumed that the indoor unit 20C is in a resting state and is not in operation, and only the indoor unit 20A is in operation. As described above, in the multi-type air conditioner 1, the second mode, that is, the "boost priority mode" in which priority is given to the previously requested operation, is effective. Also, the indoor unit 20B, which is prioritized in the fourth mode, requests the heating operation. Therefore, the control unit 50 starts the heating operation in the indoor unit 20B according to the rules of the second mode and the fourth mode. If the heating operation of the indoor unit 20B and the cooling operation of the indoor unit 20A are requested at the same time, in accordance with the rule of the fourth mode, in step S13, the control unit 50 causes the heating operation of the indoor unit 20B. start driving. The multi-type air conditioner 1 enters a state of waiting for the next instruction while executing the heating operation in the indoor unit 20B (hereinafter referred to as "heating operation state"). In this case, since the cooling operation of the indoor unit 20A cannot be continued, in step S13, the control unit 50 causes the display unit or the remote controller of the indoor unit 20A of the A room to display "The cooling operation is interrupted due to mode conflict with another room. ” is displayed to notify the user.
　ステップＳ１２の条件に該当しない場合（Ｓ１２：ＮＯ）、ステップＳ１４に進む。制御部５０は、ステップＳ１４において、室内機２０Ａ、２０Ｃの少なくともいずれかが洗浄運転の蒸発器フェーズ若しくは送風フェーズの実行中又は送風運転中であるかを判断する。ステップＳ１４において、制御部５０は、室内機２０Ｂでの暖房運転と、室内機２０Ａ、２０Ｃの少なくともいずれかでの冷房運転以外の運転とが、同時に要求されたかについても判断する。ここでの「同時」は、同じ時刻に行われた場合だけではなく、室内機２０Ａ、２０Ｃが冷房運転以外の運転開始前の準備状態になっている場合も含む。 If the condition of step S12 is not met (S12: NO), proceed to step S14. In step S14, the control unit 50 determines whether at least one of the indoor units 20A, 20C is executing the evaporator phase or the ventilation phase of the cleaning operation, or is in the ventilation operation. In step S14, the control unit 50 also determines whether the heating operation in the indoor unit 20B and the operation other than the cooling operation in at least one of the indoor units 20A and 20C are simultaneously requested. Here, "simultaneously" includes not only the case where the operations are performed at the same time, but also the case where the indoor units 20A and 20C are in a preparatory state before starting operations other than the cooling operation.
　この条件に該当する場合（Ｓ１４：ＹＥＳ）、制御部５０は、ステップＳ１５において、第２モード及び第４モードの規則に反して、室内機２０Ａでの運転（洗浄運転の蒸発器フェーズ若しくは送風フェーズ又は送風運転）を継続する。もし、室内機２０Ｂでの暖房運転と、室内機２０Ａでの冷房運転以外の運転とが同時に要求されたのであれば、第４モードの規則に反して、ステップＳ１５において、制御部５０は、室内機２０Ａでの洗浄運転の蒸発器フェーズ又は送風運転を開始する。洗浄運転の蒸発器フェーズが継続又は開始されると、この後、マルチ型空気調和機１は図４で説明した洗浄運転の送風フェーズ（Ｓ２）、凝縮器フェーズ（Ｓ３）へと順次移行する。洗浄運転の送風フェーズが継続されると、この後、マルチ型空気調和機１は凝縮器フェーズ（Ｓ３）へと移行する。そして、凝縮器フェーズが終了すると、マルチ型空気調和機１は休止状態となるが、ここでは詳細を省略する。一方、送風運転が継続又は開始されると、マルチ型空気調和機１は、室内機２０Ａでの送風運転を実行しつつ次の指示を待機する状態（以下において「送風運転状態」と称する）を維持する又は送風運転状態となる。この場合、室内機２０Ｂでの暖房運転を実行できないので、制御部５０は、ステップＳ１５において、Ｂ室の室内機２０Ｂの表示部又はリモコンにより、「他室とのモードバッティングにより暖房運転できない」旨の表示によるユーザへの報知を行う。 If this condition is met (S14: YES), in step S15, the controller 50 causes the indoor unit 20A to operate (the evaporator phase or the ventilation phase of the cleaning operation) in violation of the rules of the second mode and the fourth mode. or fan operation). If the heating operation in the indoor unit 20B and the operation other than the cooling operation in the indoor unit 20A are requested at the same time, contrary to the rule of the fourth mode, in step S15, the control unit 50 Start the evaporator phase or blower operation of the wash operation on machine 20A. After the evaporator phase of the cleaning operation is continued or started, the multi-type air conditioner 1 sequentially shifts to the ventilation phase (S2) and the condenser phase (S3) of the cleaning operation described with reference to FIG. After the blowing phase of the cleaning operation is continued, the multi-type air conditioner 1 shifts to the condenser phase (S3). When the condenser phase ends, the multi-type air conditioner 1 enters a resting state, but the details are omitted here. On the other hand, when the blowing operation is continued or started, the multi-type air conditioner 1 waits for the next instruction while executing the blowing operation in the indoor unit 20A (hereinafter referred to as the "blowing operation state"). It will be maintained or will be in the fan operation state. In this case, the indoor unit 20B cannot perform the heating operation. Therefore, in step S15, the control unit 50 causes the display unit or the remote control of the indoor unit 20B of the room B to indicate that "heating operation cannot be performed due to mode conflict with another room." is displayed to notify the user.
　ステップＳ１４の条件に該当しない場合（Ｓ１４：ＮＯ）、ステップＳ１６に進む。このとき、室内機２０Ａは、洗浄運転の凝縮器フェーズの実行中又は暖房運転中である。制御部５０は、ステップＳ１６において、第２モード及び第４モードの規則通り、室内機２０Ｂでの暖房運転を開始し、室内機２０Ａでの凝縮器フェーズ又は暖房運転をそのまま継続する。詳細には、室内機２０Ｂのフラップ１２０を吹出口１１０が開く位置に移動させる。また、必要であれば、圧縮機１１の回転数及び電動膨脹弁ＥＶＢの開度を調整する。もし室内機２０Ｂでの暖房運転と、室内機２０Ａでの暖房運転とが同時に要求されたのであれば、第４モードの規則通り、室内機２０Ａ及び室内機２０Ｂでの暖房運転を開始する。 If the condition of step S14 is not met (S14: NO), proceed to step S16. At this time, the indoor unit 20A is executing the condenser phase of the cleaning operation or heating operation. In step S16, the controller 50 starts the heating operation in the indoor unit 20B and continues the condenser phase or the heating operation in the indoor unit 20A in accordance with the rules of the second mode and the fourth mode. Specifically, the flap 120 of the indoor unit 20B is moved to a position where the outlet 110 is opened. Moreover, if necessary, the rotational speed of the compressor 11 and the opening degree of the electric expansion valve EVB are adjusted. If the heating operation of the indoor unit 20B and the heating operation of the indoor unit 20A are requested at the same time, the heating operation of the indoor unit 20A and the indoor unit 20B is started according to the rule of the fourth mode.
　次に、ステップＳ１７において、制御部５０は、室内機２０Ａで洗浄運転の凝縮器フェーズが実行されているかを判断する。この条件に該当する場合（Ｓ１７：ＹＥＳ）、ステップＳ１８に進む。ステップＳ１８において、制御部５０は、室内機２０Ａにおける凝縮器フェーズの開始から所定時間が経過したときに、当該凝縮器フェーズを終了させる。詳細には、Ａ室ファン２５Ａを停止させ、Ａ室フラップ駆動モータ２７Ａを駆動してフラップ１２０を吹出口１１０が閉じる位置に移動させ、マルチ型空気調和機１を暖房運転状態とする。ステップＳ１７の条件に該当しない場合は（Ｓ１７：ＮＯ）、ステップＳ１８の処理をせずに、マルチ型空気調和機１を暖房運転状態に移行させる。 Next, in step S17, the controller 50 determines whether the condenser phase of the cleaning operation is being performed in the indoor unit 20A. If this condition is met (S17: YES), the process proceeds to step S18. In step S18, the controller 50 terminates the condenser phase when a predetermined time has elapsed since the start of the condenser phase in the indoor unit 20A. Specifically, the room A fan 25A is stopped, the room A flap drive motor 27A is driven, the flap 120 is moved to the position where the outlet 110 is closed, and the multi-type air conditioner 1 is brought into the heating operation state. If the condition of step S17 is not satisfied (S17: NO), the multi-type air conditioner 1 is shifted to the heating operation state without performing the process of step S18.
　ステップＳ１１の条件に該当しない場合（Ｓ１１：ＮＯ）、室内機２０Ａ、２０Ｃはいずれも運転していない。制御部５０は、ステップＳ１９において、室内機２０Ｂの暖房運転を開始する。詳細には、四路切換弁２を図１に示す実線の位置に切り換えて、圧縮機１１の運転を開始し、電動膨脹弁ＥＶＡ、ＥＶＢ、ＥＶＣをそれぞれ所定の開度に開く。さらに、室内機２０Ｂのフラップ１２０を吹出口１１０が開く位置に移動させる。これにより、マルチ型空気調和機１は暖房運転状態へと移行する。 If the conditions in step S11 are not met (S11: NO), neither of the indoor units 20A, 20C is in operation. The controller 50 starts the heating operation of the indoor unit 20B in step S19. Specifically, the four-way switching valve 2 is switched to the solid line position shown in FIG. 1, the compressor 11 is started to operate, and the electric expansion valves EVA, EVB, and EVC are each opened to a predetermined degree of opening. Further, the flap 120 of the indoor unit 20B is moved to the position where the outlet 110 is opened. As a result, the multi-type air conditioner 1 shifts to the heating operation state.
　以上の説明は、マルチ型空気調和機１が第２モード且つ第４モードで動作している場合に、室内機２０Ｂでの暖房運転が要求されたときの動作であるが、以下において、マルチ型空気調和機１が第２モード且つ第４モードとは異なるモードで動作している場合について説明する。 The above description is for the operation when the indoor unit 20B is requested to perform the heating operation when the multi-type air conditioner 1 is operating in the second mode and the fourth mode. A case where the air conditioner 1 operates in a mode different from the second mode and the fourth mode will be described.
　本実施形態のマルチ型空気調和機１が第２モード、第４モード、第１モード且つ第４モード、第２モード且つ第４モード、又は、第２モード且つ第５モードで動作している場合、室内機２０Ｂでの暖房運転が要求されたときの動作は、図５で説明したのと同じである。これらの場合、ステップＳ１３において、第２モード又は第４モードの規則通りに動作が決定される。ステップＳ１５においては、第２モード又は第４モードの規則に反して、いずれの場合も室内機２０Ａでの運転が継続される。 When the multi-type air conditioner 1 of this embodiment operates in the second mode, the fourth mode, the first mode and the fourth mode, the second mode and the fourth mode, or the second mode and the fifth mode , the operation when the heating operation of the indoor unit 20B is requested is the same as that described with reference to FIG. In these cases, in step S13, the operation is determined according to the rules of the second mode or the fourth mode. In step S15, contrary to the rules of the second mode or the fourth mode, the indoor unit 20A continues to operate in either case.
　一方、本実施形態のマルチ型空気調和機１が第１モード、第３モード、第５モード、第２モード且つ第３モード、又は、第１モード且つ第５モードで動作している場合、室内機２０Ｂでの暖房運転が要求されたときの動作は、ステップＳ１３以外は図５で説明したのと同じである。これらの場合、ステップＳ１３においては、第１モード又は第３モードの規則通りに動作が決定され、室内機２０Ａの冷房運転を継続し、室内機２０Ｂの暖房運転を実行しない。ステップＳ１５においては、第１モード又は第３モードの規則通り、いずれの場合も室内機２０Ａでの運転（洗浄運転の蒸発器フェーズ若しくは送風フェーズ又は送風運転）が継続される。 On the other hand, when the multi-type air conditioner 1 of the present embodiment operates in the first mode, the third mode, the fifth mode, the second mode and the third mode, or the first mode and the fifth mode, The operation when the heating operation of the unit 20B is requested is the same as that described with reference to FIG. 5 except for step S13. In these cases, in step S13, the operation is determined according to the rule of the first mode or the third mode, the cooling operation of the indoor unit 20A is continued, and the heating operation of the indoor unit 20B is not performed. In step S15, the operation of the indoor unit 20A (the evaporator phase or the ventilation phase of the cleaning operation, or the ventilation operation) is continued in either case according to the rules of the first mode or the third mode.
（洗浄運転要求時の動作）
　次に、本実施形態に係るマルチ型空気調和機１において、Ａ室に設置された室内機２０Ａでの洗浄運転が要求されたときの動作について、図６のフローチャートをさらに参照して説明する。以下の各ステップは制御部５０によって実行される。なお、以下の説明では、マルチ型空気調和機１が、第２モード且つ第４モードで動作しているとする。 (Operation when cleaning operation is requested)
Next, the operation of the multi-type air conditioner 1 according to the present embodiment when the indoor unit 20A installed in the A room is requested to perform the cleaning operation will be described with further reference to the flowchart of FIG. Each step below is executed by the control unit 50 . In the following description, it is assumed that the multi-type air conditioner 1 operates in the second mode and the fourth mode.
　室内機２０Ａでの洗浄運転が要求されると、ステップＳ３１において、制御部５０は、Ｂ室及びＣ室に設置された室内機２０Ｂ、２０Ｃの少なくともいずれかが空調運転中又は洗浄運転中であるかを判断する。ステップＳ３１において、制御部５０は、室内機２０Ａでの洗浄運転と、室内機２０Ｂ、２０Ｃの少なくともいずれかでの空調運転又は洗浄運転とが、同時に要求されたかについても判断する。ここでの「同時」は、同じ時刻に行われた場合だけではなく、室内機２０Ｂ、２０Ｃが空調運転又は洗浄運転の運転開始前の準備状態になっている場合も含む。なお、洗浄運転が要求された時点で、室内機２０Ａは空調運転を実行していてもよいし、いずれの運転も実行していなくてもよい。以下の説明においては、洗浄運転が要求された時点で、室内機２０Ａはいずれの運転も実行していない休止状態であったと仮定している。 When the cleaning operation of the indoor unit 20A is requested, in step S31, the control unit 50 determines whether at least one of the indoor units 20B and 20C installed in the room B and the room C is in the air conditioning operation or the cleaning operation. to judge whether In step S31, the control unit 50 also determines whether the cleaning operation in the indoor unit 20A and the air conditioning operation or cleaning operation in at least one of the indoor units 20B and 20C are requested at the same time. Here, "simultaneously" includes not only the case of being performed at the same time, but also the case where the indoor units 20B and 20C are in a preparatory state before starting the air-conditioning operation or the cleaning operation. At the time when the cleaning operation is requested, the indoor unit 20A may be performing the air conditioning operation, or may not be performing any operation. In the following description, it is assumed that the indoor unit 20A was in a dormant state in which no operation was being performed when the cleaning operation was requested.
　この条件に該当する場合（Ｓ３１：ＹＥＳ）、ステップＳ３２に進む。制御部５０は、ステップＳ３２において、室内機２０Ｂ、２０Ｃの少なくともいずれかが暖房運転中又は洗浄運転の凝縮器フェーズの実行中であるかを判断する。ステップＳ３２において、制御部５０は、室内機２０Ａでの洗浄運転と、室内機２０Ｂ、２０Ｃの少なくともいずれかでの暖房運転とが、同時に要求されたかについても判断する。ここでの「同時」は、同じ時刻に行われた場合だけではなく、室内機２０Ｂ、２０Ｃが暖房運転の運転開始前の準備状態になっている場合も含む。 If this condition is met (S31: YES), proceed to step S32. In step S32, the control unit 50 determines whether at least one of the indoor units 20B and 20C is performing the heating operation or the condenser phase of the cleaning operation. In step S32, the control unit 50 also determines whether the cleaning operation in the indoor unit 20A and the heating operation in at least one of the indoor units 20B and 20C are requested at the same time. Here, "simultaneously" includes not only the case where the operations are performed at the same time, but also the case where the indoor units 20B and 20C are in a preparatory state before starting the heating operation.
　この条件に該当する場合（Ｓ３２：ＹＥＳ）、ステップＳ３３に進む。以下では、室内機２０Ｃは休止状態で運転されておらず、室内機２０Ｂだけが暖房運転中又は凝縮器フェーズの実行中であると仮定して説明する。制御部５０は、ステップＳ３３において、第２モードに対して優先される第４モードの規則に反して、室内機２０Ａの洗浄運転を開始し、室内機２０Ｂでの運転（暖房運転中又は洗浄運転の凝縮器フェーズ）を中断する。詳細には、四路切換弁２を図１に示す点線の位置に切り換えて、電動膨脹弁ＥＶＢ、ＥＶＣを閉じる。また、圧縮機１１の回転数、室外ファン１５の回転数、Ａ室ファン２５Ａの回転数を室内機２０Ａでの洗浄運転の蒸発器フェーズに適した値に調整し、室内機２０Ａのフラップ１２０を吹出口１１０が開く位置に移動させる。さらに、室内ファン２５Ｂを停止させ、室内機２０Ｂのフラップ１２０を吹出口１１０が閉じる位置に移動させる。これによって、洗浄運転の蒸発器フェーズが開始されると、この後、マルチ型空気調和機１は図４で説明した洗浄運転の送風フェーズ（Ｓ２）、凝縮器フェーズ（Ｓ３）へと順次移行する。そして、凝縮器フェーズが終了すると、マルチ型空気調和機１は休止状態となる。さらに、制御部５０は、ステップＳ３３において、Ｂ室の室内機２０Ｂの表示部又はリモコンにより、「他室とのモードバッティングにより運転を中止する」旨の表示によるユーザへの報知を行う。 If this condition is met (S32: YES), proceed to step S33. In the following description, it is assumed that the indoor unit 20C is not operating in a dormant state and only the indoor unit 20B is in the heating operation or in the condenser phase. In step S33, the control unit 50 starts the cleaning operation of the indoor unit 20A in violation of the rule of the fourth mode, which is given priority over the second mode, and stops the operation of the indoor unit 20B (during the heating operation or the cleaning operation). condenser phase). Specifically, the four-way switching valve 2 is switched to the dotted line position shown in FIG. 1 to close the electric expansion valves EVB and EVC. In addition, the rotation speed of the compressor 11, the rotation speed of the outdoor fan 15, and the rotation speed of the A room fan 25A are adjusted to values suitable for the evaporator phase of the cleaning operation in the indoor unit 20A, and the flap 120 of the indoor unit 20A is adjusted. The outlet 110 is moved to a position where it opens. Furthermore, the indoor fan 25B is stopped, and the flap 120 of the indoor unit 20B is moved to a position where the outlet 110 is closed. As a result, when the evaporator phase of the cleaning operation is started, the multi-type air conditioner 1 then sequentially shifts to the ventilation phase (S2) and the condenser phase (S3) of the cleaning operation described with reference to FIG. . Then, when the condenser phase ends, the multi-type air conditioner 1 enters a resting state. Furthermore, in step S33, the control unit 50 notifies the user by displaying "operation will be stopped due to mode conflict with another room" by the display unit or the remote control of the indoor unit 20B of the B room.
　ステップＳ３２の条件に該当しない場合（Ｓ３２：ＮＯ）、ステップＳ３４に進む。以下では、室内機２０Ｃは休止状態で運転されていないと仮定して説明する。このとき、室内機２０Ｂは、冷房運転、送風運転、又は、洗浄運転の蒸発器フェーズ若しくは送風フェーズの実行中である。制御部５０は、ステップＳ３４において、第２モードに対して優先される第４モードの規則に反して、室内機２０Ａの洗浄運転を開始し、室内機２０Ｂでの運転（冷房運転、送風運転、又は、洗浄運転の蒸発器フェーズ若しくは送風フェーズ）を中断する。詳細には、室内ファン２５Ｂを停止させ、室内機２０Ｂのフラップ１２０を吹出口１１０が閉じる位置に移動させる。さらに、必要に応じて、電動膨脹弁ＥＶＢを閉じ且つ四路切換弁２を図１に示す点線の位置に切り換え、そして、圧縮機１１の回転数、室外ファン１５の回転数、Ａ室ファン２５Ａの回転数を室内機２０Ａでの洗浄運転の蒸発器フェーズに適した値に調整し、室内機２０Ａのフラップ１２０を吹出口１１０が開く位置に移動させる。これによって、洗浄運転の蒸発器フェーズが開始されると、この後、マルチ型空気調和機１は図４で説明した洗浄運転の送風フェーズ（Ｓ２）、凝縮器フェーズ（Ｓ３）へと順次移行する。そして、凝縮器フェーズが終了すると、マルチ型空気調和機１は休止状態となる。さらに、制御部５０は、ステップＳ３４において、Ｂ室の室内機２０Ｂの表示部又はリモコンにより、「他室とのモードバッティングにより運転を中止する」旨の表示によるユーザへの報知を行う。 If the conditions in step S32 are not met (S32: NO), the process proceeds to step S34. In the following description, it is assumed that the indoor unit 20C is not operating in a hibernation state. At this time, the indoor unit 20B is executing the cooling operation, the air blowing operation, or the evaporator phase or the air blowing phase of the cleaning operation. In step S34, the control unit 50 starts the cleaning operation of the indoor unit 20A, contrary to the rule of the fourth mode that takes precedence over the second mode, and operates the indoor unit 20B (cooling operation, blowing operation, Or interrupt the evaporator phase or blower phase of the cleaning operation. Specifically, the indoor fan 25B is stopped, and the flap 120 of the indoor unit 20B is moved to a position where the outlet 110 is closed. Furthermore, if necessary, the electric expansion valve EVB is closed, the four-way switching valve 2 is switched to the position indicated by the dotted line in FIG. is adjusted to a value suitable for the evaporator phase of the cleaning operation in the indoor unit 20A, and the flap 120 of the indoor unit 20A is moved to a position where the outlet 110 opens. As a result, when the evaporator phase of the cleaning operation is started, the multi-type air conditioner 1 then sequentially shifts to the ventilation phase (S2) and the condenser phase (S3) of the cleaning operation described with reference to FIG. . Then, when the condenser phase ends, the multi-type air conditioner 1 enters a resting state. Further, in step S34, the control section 50 notifies the user by displaying "operation will be stopped due to mode conflict with another room" by the display section or remote control of the indoor unit 20B of the B room.
　ステップＳ３１の条件に該当しない場合（Ｓ３１：ＮＯ）、室内機２０Ｂ、２０Ｃはいずれも運転していない。制御部５０は、ステップＳ３７において、室内機２０Ａの洗浄運転を開始する。詳細には、四路切換弁２を図１に示す点線の位置に切り換えて、圧縮機１１の運転を開始し、電動膨脹弁ＥＶＡを所定の開度に開く。さらに、室内機２０Ａのフラップ１２０を吹出口１１０が開く位置に移動させる。この後、マルチ型空気調和機１は図４で説明した洗浄運転の送風フェーズ（Ｓ２）、凝縮器フェーズ（Ｓ３）へと順次移行する。そして、凝縮器フェーズが終了すると、マルチ型空気調和機１は休止状態となる。 If the conditions in step S31 are not met (S31: NO), neither of the indoor units 20B and 20C is in operation. The controller 50 starts the cleaning operation of the indoor unit 20A in step S37. Specifically, the four-way switching valve 2 is switched to the position indicated by the dotted line in FIG. 1, the compressor 11 is started to operate, and the electric expansion valve EVA is opened to a predetermined degree of opening. Further, the flap 120 of the indoor unit 20A is moved to the position where the outlet 110 is opened. Thereafter, the multi-type air conditioner 1 sequentially shifts to the ventilation phase (S2) and the condenser phase (S3) of the cleaning operation described with reference to FIG. Then, when the condenser phase ends, the multi-type air conditioner 1 enters a resting state.
　以上の説明は、マルチ型空気調和機１が第２モード且つ第４モードで動作している場合に、室内機２０Ａでの洗浄運転が要求されたときの動作であるが、以下において、マルチ型空気調和機１が第２モード且つ第４モードとは異なるモードで動作している場合について説明する。 The above description is the operation when the cleaning operation is requested in the indoor unit 20A when the multi-type air conditioner 1 is operating in the second mode and the fourth mode. A case where the air conditioner 1 operates in a mode different from the second mode and the fourth mode will be described.
　本実施形態のマルチ型空気調和機１が第２モード、第３モード、第２モード且つ第３モード、又は、第２モード且つ第５モードで動作している場合、室内機２０Ａでの洗浄運転が要求されたときの動作は、図６で説明したのと同じである。これらの場合、ステップＳ３３及びステップＳ３４において、第２モード又は第３モードの規則通りに動作が決定される。 When the multi-type air conditioner 1 of the present embodiment operates in the second mode, the third mode, the second mode and the third mode, or the second mode and the fifth mode, the cleaning operation in the indoor unit 20A is requested, the operation is the same as described in FIG. In these cases, in steps S33 and S34, the operation is determined according to the rules of the second mode or third mode.
　一方、本実施形態のマルチ型空気調和機１が第１モード、第４モード、第５モード、第１モード且つ第４モード、第１モード且つ第５モード、又は、第２モード且つ第４モードで動作している場合、室内機２０Ａでの洗浄運転が要求されたときの動作も、図６で説明したのと同じである。これらの場合、ステップＳ３３及びステップＳ３４において、第１モード又は第４モードの規則に反するように動作が決定される。 On the other hand, the multi-type air conditioner 1 of the present embodiment is in the first mode, the fourth mode, the fifth mode, the first mode and the fourth mode, the first mode and the fifth mode, or the second mode and the fourth mode. When the indoor unit 20A is operating in , the operation when the cleaning operation in the indoor unit 20A is requested is also the same as described with reference to FIG. In these cases, in steps S33 and S34, the operation is determined to violate the rules of the first mode or the fourth mode.
（実施形態の効果）
　上述のように、本実施形態では、室内機２０Ａでの洗浄運転の要求と室内機２０Ｂでの暖房運転の要求とが同時にあったとき、室内機２０Ｂでの暖房運転を実行せずに室内機２０Ａでの洗浄運転を実行する。そのため、ある室内機での洗浄運転の要求と、別の室内機での暖房運転の要求とが同時にあったとき、ユーザの洗浄運転に対する要求を満たすことができる。 (Effect of Embodiment)
As described above, in the present embodiment, when there is a request for the cleaning operation in the indoor unit 20A and a request for the heating operation in the indoor unit 20B at the same time, the heating operation is not performed in the indoor unit 20B. Run a wash run at 20A. Therefore, when there is a request for the cleaning operation in one indoor unit and a request for the heating operation in another indoor unit at the same time, the user's request for the cleaning operation can be satisfied.
　また、本実施形態では、マルチ型空気調和機１が第２モード、第２モード且つ第４モード等で動作している場合に、室内機２０Ａでの冷房運転の要求と室内機２０Ｂでの暖房運転の要求とが同時にあったとき、室内機２０Ａでの冷房運転を実行せずに室内機２０Ｂでの暖房運転を実行する。このように、冷房運転と暖房運転とが衝突する場合には、動作モードに従った動作を行うことにより、ユーザの意図に従った運転が可能である。 Further, in the present embodiment, when the multi-type air conditioner 1 is operating in the second mode, the second mode, the fourth mode, etc., the cooling operation request in the indoor unit 20A and the heating operation in the indoor unit 20B When there is an operation request at the same time, the indoor unit 20B performs the heating operation without performing the cooling operation in the indoor unit 20A. In this way, when the cooling operation and the heating operation collide with each other, the operation according to the operation mode enables operation according to the user's intention.
　また、本実施形態では、マルチ型空気調和機１がいずれのモードで動作している場合であっても、室内機２０Ａでの洗浄運転の要求と室内機２０Ｂでの暖房運転の要求とが同時にあったとき、室内機２０Ｂでの暖房運転を実行せずに室内機２０Ａでの洗浄運転を実行する。したがって、動作モードに関わらず、ユーザの洗浄運転に対する要求を満たすことができる。 Further, in the present embodiment, regardless of which mode the multi-type air conditioner 1 is operating in, the request for the cleaning operation in the indoor unit 20A and the request for the heating operation in the indoor unit 20B are made at the same time. When there is, the cleaning operation is performed in the indoor unit 20A without performing the heating operation in the indoor unit 20B. Therefore, regardless of the operation mode, it is possible to meet the user's request for cleaning operation.
（変形例）
　上述した暖房運転要求時の動作において、ステップＳ１４を、室内機２０Ａ、２０Ｃの少なくともいずれかが洗浄運転中又は送風運転中であるかを判断するように変更してもよい。この場合、ステップＳ１５において、Ａ室の室内機２０Ａが洗浄運転の凝縮器フェーズ中であったときも、これが継続される。そして、ステップＳ１７及びステップＳ１８がステップＳ１５の後に実行される。 (Modification)
In the operation when the heating operation is requested as described above, step S14 may be changed so as to determine whether at least one of the indoor units 20A and 20C is in the cleaning operation or the air blowing operation. In this case, even when the indoor unit 20A of the room A is in the condenser phase of the cleaning operation in step S15, this is continued. Then, steps S17 and S18 are executed after step S15.
　以上、実施形態を説明したが、特許請求の範囲の趣旨及び範囲から逸脱することなく、形態や詳細の多様な変更が可能なことが理解されるであろう。 Although the embodiments have been described above, it will be understood that various changes in form and detail are possible without departing from the spirit and scope of the claims.
　　３　冷媒回路
　１０　室外機
　１１　圧縮機
　１２　四路切換弁
　１３　室外熱交換器
　１６　アキュムレータ
　１７Ａ、１７Ｂ、１７Ｃ　冷媒配管接続部
　１８Ａ、１８Ｂ、１８Ｃ　冷媒配管接続部
　２０Ａ、２０Ｂ、２０Ｃ　室内機
　２４Ａ　Ａ室熱交換器
　２４Ｂ　Ｂ室熱交換器
　２４Ｃ　Ｃ室熱交換器
　２５Ａ　Ａ室ファン
　２５Ｂ　Ｂ室ファン
　２５Ｃ　Ｃ室ファン
　３１　吐出管温度センサ
　３２　室外熱交換器温度センサ
　３３　室外温度センサ
　４５Ａ　Ａ室熱交換器温度センサ
　４５Ｂ　Ｂ室熱交換器温度センサ
　４５Ｃ　Ｃ室熱交換器温度センサ
　４６Ａ　Ａ室温度センサ
　４６Ｂ　Ｂ室温度センサ
　４６Ｃ　Ｃ室温度センサ
　ＥＶＡ、ＥＶＢ、ＥＶＣ　電動膨脹弁 3 refrigerant circuit 10 outdoor unit 11 compressor 12 four-way switching valve 13 outdoor heat exchanger 16 accumulator 17A, 17B, 17C refrigerant pipe joints 18A, 18B, 18C refrigerant pipe joints 20A, 20B, 20C indoor unit 24A room A heat Exchanger 24B Room B heat exchanger 24C Room C heat exchanger 25A Fan for room A 25B Fan for room B 25C Fan for room C 31 Discharge pipe temperature sensor 32 Outdoor heat exchanger temperature sensor 33 Outdoor temperature sensor 45A Room A heat exchanger temperature sensor 45B Room B heat exchanger temperature sensor 45C Room C heat exchanger temperature sensor 46A Room A temperature sensor 46B Room B temperature sensor 46C Room C temperature sensor EVA, EVB, EVC Electric expansion valve

Claims (15)

  1. 　室外熱交換器（１３）を含む室外機（１０）と、
    　前記室外機（１０）に冷媒配管を介して接続されており、第１室内熱交換器（２４Ａ）を含む第１室内機（２０Ａ）と、
    　前記室外機（１０）に前記冷媒配管を介して接続されており、第２室内熱交換器（２４Ｂ）を含む第２室内機（２０Ｂ）と、
    　制御部（５０）と、を備え、
    　前記制御部（５０）は、
    　前記第１室内熱交換器（２４Ａ）を蒸発器として機能させて前記第１室内熱交換器（２４Ａ）を洗浄することを含む、前記第１室内機（２０Ａ）での洗浄運転、及び、前記第２室内熱交換器（２４Ｂ）を凝縮器として機能させる、前記第２室内機（２０Ｂ）での暖房運転を実行可能であり、
    　前記第１室内機（２０Ａ）での前記洗浄運転の要求と前記第２室内機（２０Ｂ）での前記暖房運転の要求とが同時にあったとき、前記第２室内機（２０Ｂ）での前記暖房運転を実行せずに前記第１室内機（２０Ａ）での前記洗浄運転を実行する空気調和機（１）。     an outdoor unit (10) including an outdoor heat exchanger (13);
    a first indoor unit (20A) connected to the outdoor unit (10) via a refrigerant pipe and including a first indoor heat exchanger (24A);
    a second indoor unit (20B) connected to the outdoor unit (10) via the refrigerant pipe and including a second indoor heat exchanger (24B);
    A control unit (50),
    The control unit (50)
    A cleaning operation in the first indoor unit (20A), which includes cleaning the first indoor heat exchanger (24A) by causing the first indoor heat exchanger (24A) to function as an evaporator, and A heating operation can be performed in the second indoor unit (20B) that causes the second indoor heat exchanger (24B) to function as a condenser,
    When the request for the cleaning operation in the first indoor unit (20A) and the request for the heating operation in the second indoor unit (20B) are made at the same time, the heating operation in the second indoor unit (20B) An air conditioner (1) that executes the cleaning operation in the first indoor unit (20A) without executing the operation.
  2. 　前記制御部（５０）は、前記第１室内熱交換器（２４Ａ）を蒸発器として機能させる、前記第１室内機（２０Ａ）での冷房運転を実行可能であり、
    　前記第１室内機（２０Ａ）での前記冷房運転の要求と前記第２室内機（２０Ｂ）での前記暖房運転の要求とが同時にあったとき、前記第１室内機（２０Ａ）での前記冷房運転を実行せずに前記第２室内機（２０Ｂ）での前記暖房運転を実行可能である請求項１に記載の空気調和機（１）。     The control unit (50) is capable of performing a cooling operation in the first indoor unit (20A), causing the first indoor heat exchanger (24A) to function as an evaporator,
    When there is a request for the cooling operation in the first indoor unit (20A) and a request for the heating operation in the second indoor unit (20B) at the same time, the cooling in the first indoor unit (20A) The air conditioner (1) according to claim 1, wherein the heating operation can be performed in the second indoor unit (20B) without performing operation.
  3. 　前記制御部（５０）は、
    　前記第１室内機（２０Ａ）での空調運転として、前記第１室内熱交換器（２４Ａ）を凝縮器として機能させる暖房運転と、前記第１室内熱交換器（２４Ａ）を蒸発器として機能させる冷房運転とを実行可能であり、
    　前記第２室内機（２０Ｂ）での空調運転として、前記第２室内熱交換器（２４Ｂ）を凝縮器として機能させる前記暖房運転に加えて、前記第２室内熱交換器（２４Ｂ）を蒸発器として機能させる冷房運転を実行可能であると共に、前記第２室内熱交換器（２４Ｂ）を蒸発器として機能させて前記第２室内熱交換器（２４Ｂ）を洗浄することを含む、前記第２室内機（２０Ｂ）での洗浄運転を実行可能であり、
    　前記制御部（５０）は、前記空調運転の要求及び前記洗浄運転の要求を運転要求としたとき、前記第１室内機（２０Ａ）での前記空調運転又は前記洗浄運転の要求と前記第２室内機（２０Ｂ）での前記空調運転又は前記洗浄運転の要求とが同時にあったとき、前記第１室内機（２０Ａ）での前記運転要求及び前記第２室内機（２０Ｂ）での前記運転要求のうちで先に行われた前記運転要求に係る運転を優先して実行する第１モード、及び、後に行われた前記運転要求に係る運転を優先して実行する第２モードでの動作が可能である請求項１又は２に記載の空気調和機（１）。     The control unit (50)
    Air-conditioning operation in the first indoor unit (20A) includes heating operation in which the first indoor heat exchanger (24A) functions as a condenser, and a heating operation in which the first indoor heat exchanger (24A) functions as an evaporator. cooling operation and can be executed,
    As the air conditioning operation in the second indoor unit (20B), in addition to the heating operation in which the second indoor heat exchanger (24B) functions as a condenser, the second indoor heat exchanger (24B) is used as an evaporator. and the second indoor heat exchanger (24B) functions as an evaporator to wash the second indoor heat exchanger (24B). machine (20B) can perform a cleaning operation,
    When the request for the air conditioning operation and the request for the cleaning operation are the operation requests, the control unit (50) controls the request for the air conditioning operation or the cleaning operation in the first indoor unit (20A) and the request for the second indoor unit (20A). When there is a request for the air conditioning operation or the cleaning operation in the unit (20B) at the same time, the operation request for the first indoor unit (20A) and the operation request for the second indoor unit (20B) Among them, a first mode for preferentially executing the operation according to the earlier operation request and a second mode for preferentially executing the operation according to the later operation request are possible. An air conditioner (1) according to claim 1 or 2.
  4. 　前記制御部（５０）は、前記第１モードで動作している場合において、前記第２室内機（２０Ｂ）での前記暖房運転中に前記第１室内機（２０Ａ）での前記洗浄運転が要求されたとき、前記第２室内機（２０Ｂ）での前記暖房運転を中断して前記第１室内機（２０Ａ）での前記洗浄運転を実行する請求項３に記載の空気調和機（１）。 When operating in the first mode, the control unit (50) requests the cleaning operation in the first indoor unit (20A) during the heating operation in the second indoor unit (20B). 4. The air conditioner (1) according to claim 3, wherein the heating operation in the second indoor unit (20B) is interrupted and the cleaning operation is performed in the first indoor unit (20A) when the second indoor unit (20B) is turned on.
  5. 　前記制御部（５０）は、前記第１モードで動作している場合において、前記第１室内機（２０Ａ）での前記洗浄運転中に前記第２室内機（２０Ｂ）での前記暖房運転が要求されたとき、前記第２室内機（２０Ｂ）での前記暖房運転を実行せずに前記第１室内機（２０Ａ）での前記洗浄運転を継続する請求項３に記載の空気調和機（１）。 When operating in the first mode, the control unit (50) requests the heating operation in the second indoor unit (20B) during the cleaning operation in the first indoor unit (20A). 4. The air conditioner (1) according to claim 3, wherein the cleaning operation in the first indoor unit (20A) is continued without executing the heating operation in the second indoor unit (20B) when the .
  6. 　前記制御部（５０）は、前記第２モードで動作している場合において、前記第１室内機（２０Ａ）での前記洗浄運転中に前記第２室内機（２０Ｂ）での前記暖房運転中が要求されたとき、前記第２室内機（２０Ｂ）での前記暖房運転を実行せずに前記第１室内機（２０Ａ）での前記洗浄運転を継続する請求項３に記載の空気調和機（１）。 When operating in the second mode, the control unit (50) determines whether the second indoor unit (20B) is in the heating operation during the cleaning operation in the first indoor unit (20A). The air conditioner (1) according to claim 3, wherein when requested, the cleaning operation in the first indoor unit (20A) is continued without performing the heating operation in the second indoor unit (20B). ).
  7. 　前記制御部（５０）は、前記第２モードで動作している場合において、前記第２室内機（２０Ｂ）での前記暖房運転中に前記第１室内機（２０Ａ）での前記洗浄運転中が要求されたとき、前記第２室内機（２０Ｂ）での前記暖房運転を中断して前記第１室内機（２０Ａ）での前記洗浄運転を実行する請求項３に記載の空気調和機（１）。 When operating in the second mode, the control unit (50) determines whether during the cleaning operation of the first indoor unit (20A) during the heating operation of the second indoor unit (20B) The air conditioner (1) according to claim 3, wherein when requested, the heating operation in the second indoor unit (20B) is interrupted and the cleaning operation in the first indoor unit (20A) is performed. .
  8. 　前記制御部（５０）は、
    　前記第１室内機（２０Ａ）での空調運転として、前記第１室内熱交換器（２４Ａ）を凝縮器として機能させる暖房運転と、前記第１室内熱交換器（２４Ａ）を蒸発器として機能させる冷房運転とを実行可能であり、
    　前記第２室内機（２０Ｂ）での空調運転として、前記第２室内熱交換器（２４Ｂ）を凝縮器として機能させる前記暖房運転に加えて、前記第２室内熱交換器（２４Ｂ）を蒸発器として機能させる冷房運転を実行可能であると共に、前記第２室内熱交換器（２４Ｂ）を蒸発器として機能させて前記第２室内熱交換器（２４Ｂ）を洗浄することを含む、前記第２室内機（２０Ｂ）での洗浄運転を実行可能であり、
    　前記制御部（５０）は、前記空調運転の要求及び前記洗浄運転の要求を運転要求としたとき、前記第１室内機（２０Ａ）での前記空調運転又は前記洗浄運転の要求と前記第２室内機（２０Ｂ）での前記空調運転又は前記洗浄運転の要求とが同時にあったとき、前記第１室内機（２０Ａ）での前記運転要求に係る運転を優先して実行する第３モード、及び、前記第２室内機（２０Ｂ）での前記運転要求に係る運転を優先して実行する第４モードでの動作が可能である請求項１又は２に記載の空気調和機（１）。     The control unit (50)
    Air-conditioning operation in the first indoor unit (20A) includes heating operation in which the first indoor heat exchanger (24A) functions as a condenser, and a heating operation in which the first indoor heat exchanger (24A) functions as an evaporator. cooling operation and can be executed,
    As the air conditioning operation in the second indoor unit (20B), in addition to the heating operation in which the second indoor heat exchanger (24B) functions as a condenser, the second indoor heat exchanger (24B) is used as an evaporator. and the second indoor heat exchanger (24B) functions as an evaporator to wash the second indoor heat exchanger (24B). machine (20B) can perform a cleaning operation,
    When the request for the air conditioning operation and the request for the cleaning operation are the operation requests, the control unit (50) controls the request for the air conditioning operation or the cleaning operation in the first indoor unit (20A) and the request for the second indoor unit (20A). a third mode in which, when there is a request for the air conditioning operation or the cleaning operation in the unit (20B) at the same time, the operation according to the operation request in the first indoor unit (20A) is preferentially executed; 3. The air conditioner (1) according to claim 1 or 2, capable of operating in a fourth mode in which the second indoor unit (20B) is operated according to the operation request with priority.
  9. 　前記制御部（５０）は、前記第４モードで動作している場合において、前記第１室内機（２０Ａ）での前記洗浄運転中に前記第２室内機（２０Ｂ）での前記暖房運転中が要求されたとき、前記第２室内機（２０Ｂ）での前記暖房運転を実行せずに前記第１室内機（２０Ａ）での洗浄運転を継続し、前記第２室内機（２０Ｂ）での前記暖房運転中に前記第１室内機（２０Ａ）での前記洗浄運転が要求されたとき、前記第２室内機（２０Ｂ）での暖房運転を中断して前記第１室内機（２０Ａ）での洗浄運転を実行する請求項８に記載の空気調和機（１）。 In the case of operating in the fourth mode, the control unit (50) determines whether the second indoor unit (20B) is in the heating operation during the cleaning operation in the first indoor unit (20A). When requested, continue the cleaning operation in the first indoor unit (20A) without executing the heating operation in the second indoor unit (20B), and perform the cleaning operation in the second indoor unit (20B). When the cleaning operation in the first indoor unit (20A) is requested during the heating operation, the heating operation in the second indoor unit (20B) is interrupted and the cleaning is performed in the first indoor unit (20A). An air conditioner (1) according to claim 8, wherein the operation is carried out.
  10. 　前記制御部（５０）は、前記第３モードで動作している場合において、前記第１室内機（２０Ａ）での前記洗浄運転中に前記第２室内機（２０Ｂ）での前記暖房運転が要求されたとき、前記第１室内機（２０Ａ）での前記洗浄運転を継続し前記第２室内機（２０Ｂ）での前記暖房運転を実行せず、前記第２室内機（２０Ｂ）での前記暖房運転中に前記第１室内機（２０Ａ）での前記洗浄運転中が要求されたとき、前記第１室内機（２０Ａ）での前記洗浄運転を実行し前記第２室内機（２０Ｂ）での前記暖房運転を中断する請求項８に記載の空気調和機（１）。 The control unit (50) requests the heating operation in the second indoor unit (20B) during the cleaning operation in the first indoor unit (20A) when operating in the third mode. is performed, the cleaning operation in the first indoor unit (20A) is continued and the heating operation in the second indoor unit (20B) is not performed, and the heating in the second indoor unit (20B) When the cleaning operation in the first indoor unit (20A) is requested during operation, the cleaning operation in the first indoor unit (20A) is performed and the cleaning operation in the second indoor unit (20B) is performed. The air conditioner (1) according to claim 8, wherein the heating operation is interrupted.
  11. 　前記制御部（５０）は、
    　前記第１室内機（２０Ａ）での空調運転として、前記第１室内熱交換器（２４Ａ）を凝縮器として機能させる暖房運転と、前記第１室内熱交換器（２４Ａ）を蒸発器として機能させる冷房運転とを実行可能であり、
    　前記第２室内機（２０Ｂ）での空調運転として、前記第２室内熱交換器（２４Ｂ）を凝縮器として機能させる前記暖房運転に加えて、前記第２室内熱交換器（２４Ｂ）を蒸発器として機能させる冷房運転を実行可能であると共に、前記第２室内熱交換器（２４Ｂ）を蒸発器として機能させて前記第２室内熱交換器（２４Ｂ）を洗浄することを含む、前記第２室内機（２０Ｂ）での洗浄運転を実行可能であり、
    　前記制御部（５０）は、前記空調運転の要求及び前記洗浄運転の要求を運転要求としたとき、前記第１室内機（２０Ａ）での前記空調運転又は前記洗浄運転の要求と前記第２室内機（２０Ｂ）での前記空調運転又は前記洗浄運転の要求とが同時にあったとき、前記第１室内機（２０Ａ）での前記運転要求及び前記第２室内機（２０Ｂ）での前記運転要求のうちで先に行われた前記運転要求に係る運転を優先して実行する第１モード、後に行われた前記運転要求に係る運転を優先して実行する第２モード、前記第１室内機（２０Ａ）での前記運転要求に係る運転を優先して実行する第３モード、及び、前記第２室内機（２０Ｂ）での前記運転要求に係る運転を優先して実行する第４モードでの動作が可能である請求項１又は２に記載の空気調和機（１）。     The control unit (50)
    Air-conditioning operation in the first indoor unit (20A) includes heating operation in which the first indoor heat exchanger (24A) functions as a condenser, and a heating operation in which the first indoor heat exchanger (24A) functions as an evaporator. cooling operation and can be executed,
    As the air conditioning operation in the second indoor unit (20B), in addition to the heating operation in which the second indoor heat exchanger (24B) functions as a condenser, the second indoor heat exchanger (24B) is used as an evaporator. and the second indoor heat exchanger (24B) functions as an evaporator to wash the second indoor heat exchanger (24B). machine (20B) can perform a cleaning operation,
    When the request for the air conditioning operation and the request for the cleaning operation are the operation requests, the control unit (50) controls the request for the air conditioning operation or the cleaning operation in the first indoor unit (20A) and the request for the second indoor unit (20A). When there is a request for the air conditioning operation or the cleaning operation in the unit (20B) at the same time, the operation request for the first indoor unit (20A) and the operation request for the second indoor unit (20B) Among them, a first mode for preferentially executing the operation according to the earlier operation request, a second mode for preferentially executing the operation according to the later operation request, the first indoor unit (20A ) and a fourth mode of preferentially executing the operation according to the operation request in the second indoor unit (20B). An air conditioner (1) according to claim 1 or 2, which is possible.
  12. 　前記制御部（５０）は、前記第１モード且つ前記第４モードで動作している場合において、前記第１室内機（２０Ａ）での前記洗浄運転中に前記第２室内機（２０Ｂ）での前記暖房運転が要求されたとき、前記第１室内機（２０Ａ）での前記洗浄運転を継続し前記第２室内機（２０Ｂ）での前記暖房運転を実行せず、前記第２室内機（２０Ｂ）での前記暖房運転中に前記第１室内機（２０Ａ）での前記洗浄運転が要求されたとき、前記第１室内機（２０Ａ）での前記洗浄運転を実行して前記第２室内機（２０Ｂ）での前記暖房運転を中断する請求項１１に記載の空気調和機（１）。 When operating in the first mode and the fourth mode, the control unit (50) controls the cleaning operation in the second indoor unit (20B) during the cleaning operation in the first indoor unit (20A). When the heating operation is requested, the cleaning operation in the first indoor unit (20A) is continued, the heating operation in the second indoor unit (20B) is not performed, and the second indoor unit (20B) ) during the heating operation, when the cleaning operation in the first indoor unit (20A) is requested, the cleaning operation in the first indoor unit (20A) is performed to perform the second indoor unit ( 12. The air conditioner (1) according to claim 11, wherein said heating operation in 20B) is interrupted.
  13. 　前記制御部（５０）は、前記第２モード且つ前記第３モードで動作している場合において、前記第１室内機（２０Ａ）での前記洗浄運転中に前記第２室内機（２０Ｂ）での前記暖房運転が要求されたとき、前記第１室内機（２０Ａ）での前記洗浄運転を継続し前記第２室内機（２０Ｂ）での前記暖房運転を実行せず、前記第２室内機（２０Ｂ）での前記暖房運転中に前記第１室内機（２０Ａ）での前記洗浄運転が要求されたとき、前記第１室内機（２０Ａ）での前記洗浄運転を実行して前記第２室内機（２０Ｂ）での前記暖房運転を中断する請求項１１に記載の空気調和機（１）。 When operating in the second mode and the third mode, the control unit (50) controls the cleaning operation in the second indoor unit (20B) during the cleaning operation in the first indoor unit (20A). When the heating operation is requested, the cleaning operation in the first indoor unit (20A) is continued, the heating operation in the second indoor unit (20B) is not performed, and the second indoor unit (20B) ) during the heating operation, when the cleaning operation in the first indoor unit (20A) is requested, the cleaning operation in the first indoor unit (20A) is performed to perform the second indoor unit ( 12. The air conditioner (1) according to claim 11, wherein said heating operation in 20B) is interrupted.
  14. 　前記制御部（５０）は、前記第１モード且つ前記第３モードで動作している場合において、前記第１室内機（２０Ａ）での前記洗浄運転中に前記第２室内機（２０Ｂ）での前記暖房運転が要求されたとき、前記第１室内機（２０Ａ）での前記洗浄運転を継続し前記第２室内機（２０Ｂ）での前記暖房運転を実行せず、前記第２室内機（２０Ｂ）での前記暖房運転中に前記第１室内機（２０Ａ）での前記洗浄運転が要求されたとき、前記第１室内機（２０Ａ）での前記洗浄運転を実行して前記第２室内機（２０Ｂ）での前記暖房運転を中断する請求項１１に記載の空気調和機（１）。 When operating in the first mode and the third mode, the control unit (50) controls the cleaning operation in the second indoor unit (20B) during the cleaning operation in the first indoor unit (20A). When the heating operation is requested, the cleaning operation in the first indoor unit (20A) is continued, the heating operation in the second indoor unit (20B) is not performed, and the second indoor unit (20B) ) during the heating operation, when the cleaning operation in the first indoor unit (20A) is requested, the cleaning operation in the first indoor unit (20A) is performed to perform the second indoor unit ( 12. The air conditioner (1) according to claim 11, wherein said heating operation in 20B) is interrupted.
  15. 　前記制御部（５０）は、前記第２モード且つ前記第４モードで動作している場合において、前記第１室内機（２０Ａ）での前記洗浄運転中に前記第２室内機（２０Ｂ）での前記暖房運転が要求されたとき、前記第１室内機（２０Ａ）での前記洗浄運転を継続し前記第２室内機（２０Ｂ）での暖房運転を実行せず、前記第２室内機（２０Ｂ）での前記暖房運転中に前記第１室内機（２０Ａ）での前記洗浄運転が要求されたとき、前記第１室内機（２０Ａ）での前記洗浄運転を実行して前記第２室内機（２０Ｂ）での前記暖房運転を中断する請求項１１に記載の空気調和機（１）。
          When operating in the second mode and the fourth mode, the control unit (50) controls the cleaning operation in the second indoor unit (20B) during the cleaning operation in the first indoor unit (20A). When the heating operation is requested, the cleaning operation in the first indoor unit (20A) is continued, the heating operation is not performed in the second indoor unit (20B), and the second indoor unit (20B) When the cleaning operation in the first indoor unit (20A) is requested during the heating operation in , the cleaning operation in the first indoor unit (20A) is performed and the second indoor unit (20B 12. The air conditioner (1) according to claim 11, wherein the heating operation at (1) is interrupted.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0942738A (en) * 1995-07-21 1997-02-14 Sanyo Electric Co Ltd Controller for air conditioner
JP2000193288A (en) * 1998-12-28 2000-07-14 Sanyo Electric Co Ltd Air conditioner
US20090211281A1 (en) * 2008-02-05 2009-08-27 Lg Electronics Inc. Air conditioning apparatus and method for determining the amount of refrigerant of air-conditioning apparatus
JP6786019B1 (en) * 2020-03-05 2020-11-18 日立ジョンソンコントロールズ空調株式会社 Air conditioner

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7227509B2 (en) 2021-03-12 2023-02-22 ダイキン工業株式会社 air conditioner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0942738A (en) * 1995-07-21 1997-02-14 Sanyo Electric Co Ltd Controller for air conditioner
JP2000193288A (en) * 1998-12-28 2000-07-14 Sanyo Electric Co Ltd Air conditioner
US20090211281A1 (en) * 2008-02-05 2009-08-27 Lg Electronics Inc. Air conditioning apparatus and method for determining the amount of refrigerant of air-conditioning apparatus
JP6786019B1 (en) * 2020-03-05 2020-11-18 日立ジョンソンコントロールズ空調株式会社 Air conditioner

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