WO2022190886A1 - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- WO2022190886A1 WO2022190886A1 PCT/JP2022/007664 JP2022007664W WO2022190886A1 WO 2022190886 A1 WO2022190886 A1 WO 2022190886A1 JP 2022007664 W JP2022007664 W JP 2022007664W WO 2022190886 A1 WO2022190886 A1 WO 2022190886A1
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- WO
- WIPO (PCT)
- Prior art keywords
- indoor unit
- indoor
- heat exchanger
- unit
- mode
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 176
- 238000004140 cleaning Methods 0.000 claims abstract description 167
- 238000005406 washing Methods 0.000 claims abstract description 14
- 238000004378 air conditioning Methods 0.000 claims description 46
- 238000001816 cooling Methods 0.000 claims description 41
- 239000003507 refrigerant Substances 0.000 claims description 28
- 238000007664 blowing Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/48—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
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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
-
- 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
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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, executing the cleaning operation will reduce the user's demand for the heating operation. cannot be satisfied.
- An object of the present disclosure is to provide an air conditioner that can meet a user's request for heating operation when there is a request for cleaning operation in a certain indoor unit and a request for 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 heating operation is performed in the second indoor unit without performing the cleaning operation in the first indoor unit.
- the cleaning operation in the first indoor unit is performed first. If it is requested and 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 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 when cleaning operation in the first indoor unit and cleaning operation in the second indoor unit All cases where heating operation is requested at the same time shall be included.
- control unit is capable of executing a cooling operation in the first indoor unit that causes the first indoor heat exchanger to function as an evaporator, and the 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 cooling operation in the first indoor unit is performed without executing the heating operation in the second 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 heating operation in the second indoor unit is requested during the cleaning operation in the first indoor unit, the first The cleaning operation in the first indoor unit may be interrupted and the heating operation in the second indoor unit may be performed.
- 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 continued without executing the cleaning operation in the indoor unit.
- the 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 continued without executing the cleaning operation in the first indoor unit.
- control unit when 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 first The cleaning operation in the indoor unit may be interrupted and the heating operation in the second 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 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 The cleaning operation in the first indoor unit is interrupted and the heating operation is performed in the second indoor unit, and the cleaning operation in the first indoor unit is requested during the heating operation in the second indoor unit. , the heating operation in the second indoor unit may be continued without executing the cleaning operation in the first indoor unit.
- control unit when the control unit is 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 first interrupting the cleaning operation in the indoor unit, performing the heating operation in the second indoor unit, and requesting that the cleaning operation in the first indoor unit is in progress during the heating operation in the second indoor unit.
- the heating operation in the second indoor unit may be continued without executing the cleaning 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 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 a fourth mode of preferentially executing the operation according to the operation request in the second indoor unit.
- 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 interrupted and the heating operation is performed in the second indoor unit, and the heating 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 continued without executing the cleaning operation in the first indoor unit.
- 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 interrupted and the heating operation is performed in the second indoor unit, and the heating 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 continued without executing the cleaning operation in the first indoor unit.
- 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 interrupted and the heating operation is performed in the second indoor unit, and the heating 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 continued without executing the cleaning operation in the first indoor unit.
- 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 interrupted and the heating operation is performed in the second indoor unit, and the washing 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 continued without executing the cleaning operation in the first indoor unit.
- 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, and an indoor temperature sensor for detecting the room temperature is provided near the C-chamber heat exchanger 24C. 46C and an indoor 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. Note that 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. According to the rule of the third mode, the cooling operation of the indoor unit 20B is interrupted and the heating operation of the indoor unit 20A is performed. 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 first mode that is, the "first-push priority mode" in which priority is given to the operation requested earlier
- the indoor unit 20A which is prioritized in the third mode, is performing the cooling operation. Therefore, the control unit 50 continues the cooling operation in the indoor unit 20A according to the rules of the first mode and the third mode.
- step S13 the control unit 50 controls the cooling operation of the indoor unit 20A. start driving.
- the multi-type air conditioner 1 maintains a state of waiting for the next instruction while executing the cooling operation in the indoor unit 20A (hereinafter referred to as "cooling operation state") or enters the cooling operation state.
- the indoor unit 20B cannot perform the heating operation. Therefore, in step S13, 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 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.
- the control unit 50 suspends the operation of the indoor unit 20A and starts the heating operation of the indoor unit 20B in step S15, contrary to the rules of the first mode and the third mode. do. If the heating operation in the indoor unit 20B and the cleaning operation or the air blowing operation in the indoor unit 20A are requested at the same time, contrary to the rule of the third mode, the operation of the indoor unit 20A is not performed, and the indoor unit Start the heating operation of the machine 20B. Specifically, the four-way selector valve 2 is switched to the solid line position shown in FIG. 1, and all the electric expansion valves EVA, EVB, and EVC are opened to predetermined opening degrees.
- the refrigerant from the outdoor unit 10 flows through the A-room heat exchanger 24A, the B-room heat exchanger 24B, and the C-room heat exchanger 24C of the three indoor units 20A, 20B, and 20C.
- the rotation speed of the compressor 11, the rotation speed of the outdoor fan 15, and the rotation speed of the indoor fan 25B are adjusted to values corresponding to the heating load in the indoor unit 20B, and the flap 120 of the indoor unit 20B is opened by the outlet 110. move to position. Further, the room A fan 25A is stopped, and the flap 120 of the indoor unit 20A is moved to a position where the outlet 110 is closed.
- 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"). Further, in step S15, 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 controller of the indoor unit 20A of the A room.
- the reason why the step S14 determines whether the indoor unit 20A is in the air-blowing phase and in the air-blowing operation is that the electric expansion valve EVA is set to the predetermined value when the heating operation of the indoor unit 20B is started as described above. If the room A fan 25A continues to rotate, warm air will be discharged from the indoor unit 20A, which is to be prevented.
- 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 while continuing the condenser phase or the heating operation in the indoor unit 20A according to the rules of the first mode and the third 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 third 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 indoor unit 20B When the multi-type air conditioner 1 of this 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 indoor unit 20B
- the operation when the heating operation is requested at 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 first mode or third mode. In step S15, contrary to the rules of the first mode or the third mode, the heating operation of the indoor unit 20B is started in either case.
- the multi-type air conditioner 1 of the present 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. If so, the operation when the heating operation of the indoor 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 second mode or the fourth mode, the operation of the indoor unit 20A is interrupted, and the heating operation of the indoor unit 20B is started. In step S15, the heating operation of the indoor unit 20B is started in either case according to the rule of the second mode or the fourth 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 If this condition is met (S32: YES), proceed to step S33.
- the control unit 50 continues the heating operation or the condenser phase in the indoor unit 20B, contrary to the rule of the third mode that has priority over the first mode. If the cleaning operation in the indoor unit 20A and the heating operation in the indoor unit 20B are requested at the same time, the heating operation in the indoor unit 20B is started, contrary to the rule of the third mode.
- step S33 the control unit 50 causes the display unit or the remote control of the indoor unit 20A in room A to display "Cleaning by mode conflict with other rooms.” The user is notified by displaying "Cannot drive”.
- step S34 the control unit 50 determines whether the condenser phase of the cleaning operation is being performed in the indoor unit 20B. If this condition is met (S34: YES), the process proceeds to step S35.
- step S35 the controller 50 terminates the condenser phase when a predetermined time has elapsed since the start of the condenser phase in the indoor unit 20B. Specifically, the compressor 11 and the indoor fan 25B are stopped, the flap drive motor is driven to move the flap 120 to the position where the outlet 110 is closed, and the multi-type air conditioner 1 can receive a request from the remote controller. Hibernate. If the condition of step S34 is not met (S34: NO), the multi-type air conditioner 1 is maintained in the heating operation state without performing the process of step S35.
- step S36 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 maintains the evaporator phase or the ventilation phase of the cooling operation, the ventilation operation, or the cleaning operation in the indoor unit 20B, contrary to the rule of the third mode that takes precedence over the first mode. continue. If the cleaning operation in the indoor unit 20A and the operation in the indoor unit 20B are requested at the same time, the operation in the indoor unit 20B is started, contrary to the rule of the third mode.
- step S36 the control unit 50 notifies the user by displaying "washing operation cannot be performed due to mode conflict with another room" by the display unit or the remote controller of the indoor unit 20A of the A 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. When the condenser phase ends, the multi-type air conditioner 1 enters a resting state, but the details are omitted here.
- 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 first mode and the third mode.
- a case where the air conditioner 1 operates in a mode different from the first mode and the third mode will be described.
- 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 S36, the operation is determined to violate the rules of the second 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.
- the operation is determined according to the rules of the first mode or fourth mode.
- the cooling operation request in the indoor unit 20A and the heating operation in the indoor unit 20B When there is a request for operation at the same time, the cooling operation is performed in the indoor unit 20A without performing the heating operation in the indoor unit 20B (S13). 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 heating operation is performed in the indoor unit 20B without performing the cleaning operation in the indoor unit 20A. Therefore, it is possible to meet the user's request for heating operation regardless of the operation mode.
- 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 also interrupted. Then, the determinations in steps S17 and S18 are omitted.
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Abstract
Disclosed is an air conditioner 1 provided with: an outdoor unit 10; a first indoor unit 20A including a first indoor heat exchanger 24A; a second indoor unit 20B including a second indoor heat exchanger 24B; and a control unit 50. The control unit 50 can execute: a washing operation in the first indoor unit 20A, the operation including washing the first indoor heat exchanger 24A by causing the first indoor heat exchanger 24A to functions as an evaporator; and a heating operation in the second indoor unit 20B, in which the second indoor heat exchanger 24B is caused to function as a condenser. When a request for the cleaning operation in the first indoor unit 20A and a request for the heating operation in the second indoor unit 20B are simultaneously made, the heating operation in the second indoor unit 20B is executed without executing the cleaning operation in the first indoor unit 20A. As a result, a user's request for the heating operation can be fulfilled.
Description
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、洗浄運転を実行すると、ユーザの暖房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, executing the cleaning operation will reduce the user's demand for the heating 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、ユーザの暖房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 heating operation when there is a request for cleaning operation in a certain indoor unit and a request for 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1室内機での前記洗浄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 heating operation is performed in the second indoor unit without performing the cleaning operation in the first indoor unit.
本開示によると、第2室内機での暖房運転を実行することにより、ユーザの空調運転への要望を満たすことができる。
According to the present disclosure, by executing the heating operation in the second indoor unit, it is possible to meet the user's request for air conditioning operation.
本開示において、「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」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 ``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 performed first. If it is requested and 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 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 when cleaning operation in the first indoor unit and cleaning operation in the second indoor unit All cases where heating operation is requested at the same time shall be included.
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室内機での前記冷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 a cooling operation in the first indoor unit that causes the first indoor heat exchanger to function as an evaporator, and the 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 cooling operation in the first indoor unit is performed without executing the heating operation in the second 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中断して前記第2室内機での前記暖房運転を実行してよい。
At this time, 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 first The cleaning operation in the first indoor unit may be interrupted and the heating operation in the second 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せずに前記第2室内機での前記暖房運転を継続してよい。
Further, 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 continued without executing the cleaning 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せずに前記第2室内機での前記暖房運転を継続してよい。
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 continued without executing the cleaning operation in the first 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が要求されたとき、前記第1室内機での前記洗浄運転を中断して前記第2室内機での前記暖房運転を実行してよい。
Further, when 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 first The cleaning operation in the indoor unit may be interrupted and the heating operation in the second 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室内機での洗浄運転を中断して前記第2室内機での暖房運転を実行し、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せずに前記第2室内機での暖房運転を継続してよい。
At this time, 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 The cleaning operation in the first indoor unit is interrupted and the heating operation is performed in the second indoor unit, and the cleaning operation in the first indoor unit is requested during the heating operation in the second indoor unit. , the heating operation in the second indoor unit may be continued without executing the cleaning operation in the first indoor unit.
また、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が要求されたとき、前記第1室内機での前記洗浄運転を中断して前記第2室内機での前記暖房運転を実行し、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せずに前記第2室内機での前記暖房運転を継続してよい。
Further, when the control unit is 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 first interrupting the cleaning operation in the indoor unit, performing the heating operation in the second indoor unit, and requesting 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 heating operation in the second indoor unit may be continued without executing the cleaning operation in the first indoor unit.
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. 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 a fourth mode of preferentially executing the operation according to the operation request in the second indoor unit.
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中断して前記第2室内機での前記暖房運転を実行し、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1室内機での前記洗浄運転を実行せずに前記第2室内機での前記暖房運転を継続してよい。
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 washing operation in the first indoor unit is interrupted and the heating operation is performed in the second indoor unit, 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 heating operation in the second indoor unit may be continued without executing the cleaning operation in the first indoor unit.
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中断して前記第2室内機での前記暖房運転を実行し、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1室内機での前記洗浄運転を実行せずに前記第2室内機での前記暖房運転を継続してよい。
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 interrupted and the heating operation is performed in the second indoor unit, 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 heating operation in the second indoor unit may be continued without executing the cleaning operation in the first indoor unit.
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中断して前記第2室内機での前記暖房運転を実行し、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1室内機での前記洗浄運転を実行せずに前記第2室内機での前記暖房運転を継続してよい。
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 interrupted and the heating operation is performed in the second indoor unit, 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 heating operation in the second indoor unit may be continued without executing the cleaning operation in the first indoor unit.
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中断して前記第2室内機での暖房運転を実行し、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1室内機での前記洗浄運転を実行せずに前記第2室内機での前記暖房運転を継続してよい。
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 interrupted and the heating operation is performed in the second indoor unit, and the washing in the first indoor unit is performed during the heating operation in the second indoor unit. When operation is requested, the heating operation in the second indoor unit may be continued without executing the cleaning operation in the first indoor unit.
(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 amulti-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.
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
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及び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室内温度センサ46C及び室内湿度を検出する室内湿度センサ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, and an indoor temperature sensor for detecting the room temperature is provided near the C-chamber heat exchanger 24C. 46C and an indoor 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 themulti-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.
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
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 themulti-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.
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
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. Note that 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 themulti-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.
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
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、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. According to the rule of the third mode, the cooling operation of the indoor unit 20B is interrupted and the heating operation of the indoor unit 20A is performed. 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1モード且つ第3モードで動作しているとする。 (Operation when heating operation is requested)
Next, the operation of themulti-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 first mode and the third mode.
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1モード且つ第3モードで動作しているとする。 (Operation when heating operation is requested)
Next, the operation of the
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1モード、つまり先に要求された運転を優先させる「先押し優先モード」が有効である。また、第3モードにおいて優先される室内機20Aが冷房運転を実行している。したがって、制御部50は、第1モード及び第3モードの規則通り、室内機20Aでの冷房運転を継続する。もし、室内機20Bでの暖房運転と、室内機20Aでの冷房運転とが同時に要求されたのであれば、第3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20Aでの冷房運転を開始する。マルチ型空気調和機1は、室内機20Aでの冷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「冷房運転状態」と称する)を維持する又は冷房運転状態となる。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S13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 (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 first mode, that is, the "first-push priority mode" in which priority is given to the operation requested earlier, is effective. Also, the indoor unit 20A, which is prioritized in the third mode, is performing the cooling operation. Therefore, the control unit 50 continues the cooling operation in the indoor unit 20A according to the rules of the first mode and the third 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 third mode, in step S13, the control unit 50 controls the cooling operation of the indoor unit 20A. start driving. The multi-type air conditioner 1 maintains a state of waiting for the next instruction while executing the cooling operation in the indoor unit 20A (hereinafter referred to as "cooling operation state") or enters the cooling operation state. In this case, the indoor unit 20B cannot perform the heating operation. Therefore, in step S13, 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1モード及び第3モードの規則に反し、室内機20Aの運転を中断し、室内機20B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での洗浄運転又は送風運転とが同時に要求されたのであれば、第3モードの規則に反して、室内機20Aの運転を実行せず、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、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、室外機10からの冷媒が、3つの室内機20A、20B、20CのA室熱交換器24A、B室熱交換器24B及びC室熱交換器24Cを流れる。また、圧縮機11の回転数、室外ファン15の回転数、室内ファン25Bの回転数を室内機20Bでの暖房負荷に合わせた値に調整し、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。さらに、A室ファン25Aを停止させ、室内機20A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、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。さらに、制御部50は、ステップS15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運転を中止する」旨の表示によるユーザへの報知を行う。なお、ステップS14において室内機20Aが送風フェーズの実行中及び送風運転中であるかを判断しているのは、上述のように室内機20Bの暖房運転の開始に伴って電動膨脹弁EVAが所定の開度に開くので、もしA室ファン25Aの回転を継続させると室内機20Aから暖気が排出されることになり、それを防止するためである。
If this condition is met (S14: YES), the control unit 50 suspends the operation of the indoor unit 20A and starts the heating operation of the indoor unit 20B in step S15, contrary to the rules of the first mode and the third mode. do. If the heating operation in the indoor unit 20B and the cleaning operation or the air blowing operation in the indoor unit 20A are requested at the same time, contrary to the rule of the third mode, the operation of the indoor unit 20A is not performed, and the indoor unit Start the heating operation of the machine 20B. Specifically, the four-way selector valve 2 is switched to the solid line position shown in FIG. 1, and all the electric expansion valves EVA, EVB, and EVC are opened to predetermined opening degrees. Thereby, the refrigerant from the outdoor unit 10 flows through the A-room heat exchanger 24A, the B-room heat exchanger 24B, and the C-room heat exchanger 24C of the three indoor units 20A, 20B, and 20C. In addition, the rotation speed of the compressor 11, the rotation speed of the outdoor fan 15, and the rotation speed of the indoor fan 25B are adjusted to values corresponding to the heating load in the indoor unit 20B, and the flap 120 of the indoor unit 20B is opened by the outlet 110. move to position. Further, the room A fan 25A is stopped, and the flap 120 of the indoor unit 20A is moved to a position where the outlet 110 is closed. As a result, 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"). Further, in step S15, 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 controller of the indoor unit 20A of the A room. The reason why the step S14 determines whether the indoor unit 20A is in the air-blowing phase and in the air-blowing operation is that the electric expansion valve EVA is set to the predetermined value when the heating operation of the indoor unit 20B is started as described above. If the room A fan 25A continues to rotate, warm air will be discharged from the indoor unit 20A, which is to be prevented.
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1モード及び第3モードの規則通り、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しつつ、室内機20Bでの暖房運転を開始する。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3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 while continuing the condenser phase or the heating operation in the indoor unit 20A according to the rules of the first mode and the third 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 third 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1モード且つ第3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1モード且つ第3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 first mode and the third mode. A case where the air conditioner 1 operates in a mode different from the first mode and the third mode will be described.
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、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る。ステップS15においては、第1モード又は第3モードの規則に反して、いずれの場合も室内機20Bでの暖房運転が開始される。
When the multi-type air conditioner 1 of this 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 indoor unit 20B The operation when the heating operation is requested at 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 first mode or third mode. In step S15, contrary to the rules of the first mode or the third mode, the heating operation of the indoor unit 20B is started in either case.
一方、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、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2モード又は第4モードの規則通りに動作が決定され、室内機20Aの運転を中断し、室内機20Bの暖房運転を開始する。ステップS15においては、第2モード又は第4モードの規則通り、いずれの場合も室内機20Bでの暖房運転が開始される。
On the other hand, the multi-type air conditioner 1 of the present 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. If so, the operation when the heating operation of the indoor 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 second mode or the fourth mode, the operation of the indoor unit 20A is interrupted, and the heating operation of the indoor unit 20B is started. In step S15, the heating operation of the indoor unit 20B is started in either case according to the rule of the second mode or the fourth 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1モード且つ第3モードで動作しているとする。 (Operation when cleaning operation is requested)
Next, the operation of themulti-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 first mode and the third mode.
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1モード且つ第3モードで動作しているとする。 (Operation when cleaning operation is requested)
Next, the operation of the
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1モードに対して優先される第3モードの規則に反し、室内機20Bでの暖房運転又は凝縮器フェーズを継続する。もし室内機20Aでの洗浄運転と、室内機20Bでの暖房運転とが同時に要求された場合も、第3モードの規則に反し、室内機20Bでの暖房運転を開始する。この場合、室内機20Aでの洗浄運転の蒸発器フェーズを実行できないので、制御部50は、ステップS33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洗浄運転できない」旨の表示によるユーザへの報知を行う。
If this condition is met (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 continues the heating operation or the condenser phase in the indoor unit 20B, contrary to the rule of the third mode that has priority over the first mode. If the cleaning operation in the indoor unit 20A and the heating operation in the indoor unit 20B are requested at the same time, the heating operation in the indoor unit 20B is started, contrary to the rule of the third mode. In this case, since the evaporator phase of the cleaning operation in the indoor unit 20A cannot be executed, in step S33, the control unit 50 causes the display unit or the remote control of the indoor unit 20A in room A to display "Cleaning by mode conflict with other rooms." The user is notified by displaying "Cannot drive".
次に、ステップS34において、制御部50は、室内機20B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(S34:YES)、ステップS35に進む。ステップS35において、制御部50は、室内機20B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、圧縮機11及び室内ファン25Bを停止させ、フラップ駆動モータ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をリモコンからの要求を受付可能な休止状態とする。ステップS34の条件に該当しない場合は(S34:NO)、ステップS35の処理をせずに、マルチ型空気調和機1は暖房運転状態に維持される。
Next, in step S34, the control unit 50 determines whether the condenser phase of the cleaning operation is being performed in the indoor unit 20B. If this condition is met (S34: YES), the process proceeds to step S35. In step S35, the controller 50 terminates the condenser phase when a predetermined time has elapsed since the start of the condenser phase in the indoor unit 20B. Specifically, the compressor 11 and the indoor fan 25B are stopped, the flap drive motor is driven to move the flap 120 to the position where the outlet 110 is closed, and the multi-type air conditioner 1 can receive a request from the remote controller. Hibernate. If the condition of step S34 is not met (S34: NO), the multi-type air conditioner 1 is maintained in the heating operation state without performing the process of step S35.
ステップS32の条件に該当しない場合(S32:NO)、ステップS36に進む。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S36において、第1モードに対して優先される第3モードの規則に反し、室内機20Bでの冷房運転、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そのまま継続する。もし室内機20Aでの洗浄運転と、室内機20Bでの運転とが同時に要求された場合も、第3モードの規則に反し、室内機20Bでの運転を開始する。この場合、室内機20Bの運転が室内機20Aでの洗浄運転の凝縮器フェーズと衝突することになるため、室内機20Aでの洗浄運転は実行できない。制御部50は、ステップS36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洗浄運転できない」旨の表示によるユーザへの報知を行う。
If the condition of step S32 is not met (S32: NO), proceed to step S36. 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 S36, the control unit 50 maintains the evaporator phase or the ventilation phase of the cooling operation, the ventilation operation, or the cleaning operation in the indoor unit 20B, contrary to the rule of the third mode that takes precedence over the first mode. continue. If the cleaning operation in the indoor unit 20A and the operation in the indoor unit 20B are requested at the same time, the operation in the indoor unit 20B is started, contrary to the rule of the third mode. In this case, the operation of the indoor unit 20B collides with the condenser phase of the cleaning operation in the indoor unit 20A, so the cleaning operation in the indoor unit 20A cannot be performed. In step S36, the control unit 50 notifies the user by displaying "washing operation cannot be performed due to mode conflict with another room" by the display unit or the remote controller of the indoor unit 20A of the A 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は休止状態となるが、ここでは詳細を省略する。
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. When the condenser phase ends, the multi-type air conditioner 1 enters a resting state, but the details are omitted here.
以上の説明は、マルチ型空気調和機1が第1モード且つ第3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1モード且つ第3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 first mode and the third mode. A case where the air conditioner 1 operates in a mode different from the first mode and the third 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S36においては、第2モード又は第3モードの規則に反するよう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 S36, the operation is determined to violate the rules of the second 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S36においては、第1モード又は第4モードの規則通り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 S36, the operation is determined according to the rules of the first mode or 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20Aでの洗浄運転を実行せずに室内機20Bでの暖房運転を実行する。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、ユーザの暖房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 theindoor unit 20A and a request for the heating operation in the indoor unit 20B at the same time, the cleaning operation is not performed in the indoor unit 20A. A heating operation is performed at 20B. 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 heating operation can be satisfied.
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20Aでの洗浄運転を実行せずに室内機20Bでの暖房運転を実行する。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、ユーザの暖房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
また、本実施形態では、マルチ型空気調和機1が第1モード、第1モード且つ第3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20Bでの暖房運転を実行せずに室内機20Aでの冷房運転を実行する(S13)。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 first mode, the first mode, the third mode, etc., the cooling operation request in the indoor unit 20A and the heating operation in the indoor unit 20B When there is a request for operation at the same time, the cooling operation is performed in the indoor unit 20A without performing the heating operation in the indoor unit 20B (S13). 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20Aでの洗浄運転を実行せずに室内機20Bでの暖房運転を実行する。したがって、動作モードに関わらず、ユーザの暖房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 heating operation is performed in the indoor unit 20B without performing the cleaning operation in the indoor unit 20A. Therefore, it is possible to meet the user's request for heating operation regardless of the operation mode.
(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、これが中断される。そして、ステップS17及びステップS18の判断が省略される。 (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 also interrupted. Then, the determinations in steps S17 and S18 are omitted.
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、これが中断される。そして、ステップS17及びステップS18の判断が省略される。 (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
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 3refrigerant 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
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
Claims (15)
- 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1室内機(20A)での前記洗浄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 there is a request for the cleaning 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 cleaning in the first indoor unit (20A) An air conditioner (1) that performs the heating operation in the second indoor unit (20B) without performing operation. - 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)での前記冷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 the request for the cooling 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) The air conditioner (1) according to claim 1, wherein the cooling operation can be performed in the first indoor unit (20A) without performing operation. - 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. - 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1室内機(20A)での前記洗浄運転を中断して前記第2室内機(20B)での前記暖房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 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 interrupted and the heating operation is performed in the second indoor unit (20B) when the second indoor unit (20B) is activated.
- 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1室内機(20A)での前記洗浄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 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 continued without executing the cleaning operation in the first indoor unit (20A) when the .
- 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1室内機(20A)での前記洗浄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 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 continued without executing the cleaning operation in the first indoor unit (20A). ).
- 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中断して前記第2室内機(20B)での前記暖房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) 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 interrupted and the heating operation is performed in the second indoor unit (20B) when the second indoor unit (20B) is activated.
- 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. - 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)での洗浄運転を中断して前記第2室内機(20B)での暖房運転を実行し、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せずに前記第2室内機(20B)での暖房運転を継続する請求項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. When the second indoor unit (20B) is in the heating operation, the washing operation in the first indoor unit (20A) is interrupted and the heating operation is performed in the second indoor unit (20B). when the washing operation in the first indoor unit (20A) is requested, heating in the second indoor unit (20B) without executing the washing operation in the first indoor unit (20A) The air conditioner (1) according to claim 8, which continues to operate.
- 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中断して前記第2室内機(20B)での前記暖房運転を実行し、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せずに前記第2室内機(20B)での前記暖房運転を継続する請求項8に記載の空気調和機(1)。 When operating in the fourth 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). is performed, the cleaning operation in the first indoor unit (20A) is interrupted, the heating operation is performed in the second indoor unit (20B), and the heating is performed in the second indoor unit (20B). When the cleaning operation in the first indoor unit (20A) is requested during operation, the second indoor unit (20B) does not perform the cleaning operation in the first indoor unit (20A) The air conditioner (1) according to claim 8, wherein the heating operation of is continued.
- 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. - 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中断して前記第2室内機(20B)での前記暖房運転を実行し、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1室内機(20A)での前記洗浄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継続する請求項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 interrupted, the heating operation is 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 second indoor unit without executing the cleaning operation in the first indoor unit (20A) The air conditioner (1) according to claim 11, wherein said heating operation at (20B) is continued.
- 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中断して前記第2室内機(20B)での前記暖房運転を実行し、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1室内機(20A)での前記洗浄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継続する請求項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 interrupted, the heating operation is 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 second indoor unit without executing the cleaning operation in the first indoor unit (20A) The air conditioner (1) according to claim 11, wherein said heating operation at (20B) is continued.
- 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中断して前記第2室内機(20B)での前記暖房運転を実行し、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1室内機(20A)での前記洗浄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継続する請求項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 interrupted, the heating operation is 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 second indoor unit without executing the cleaning operation in the first indoor unit (20A) The air conditioner (1) according to claim 11, wherein said heating operation at (20B) is continued.
- 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中断して前記第2室内機での暖房運転を実行し、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1室内機(20A)での前記洗浄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継続する請求項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 interrupted, the heating operation in the second indoor unit is performed, and the heating operation in the second indoor unit (20B) is performed. When the cleaning operation in the first indoor unit (20A) is requested during the heating operation, the second indoor unit (20B) does not perform the cleaning operation in the first indoor unit (20A). 12. The air conditioner (1) according to claim 11, wherein said heating operation of is continued.
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Citations (4)
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 |
-
2021
- 2021-03-12 JP JP2021040621A patent/JP7227509B2/en active Active
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2022
- 2022-02-24 WO PCT/JP2022/007664 patent/WO2022190886A1/en active Application Filing
- 2022-02-24 CN CN202280020871.2A patent/CN117015683A/en active Pending
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Patent Citations (4)
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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