WO2022264308A1 - Climatiseur - Google Patents

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Publication number
WO2022264308A1
WO2022264308A1 PCT/JP2021/022851 JP2021022851W WO2022264308A1 WO 2022264308 A1 WO2022264308 A1 WO 2022264308A1 JP 2021022851 W JP2021022851 W JP 2021022851W WO 2022264308 A1 WO2022264308 A1 WO 2022264308A1
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WO
WIPO (PCT)
Prior art keywords
water
indoor
heat exchanger
humidification
refrigerant
Prior art date
Application number
PCT/JP2021/022851
Other languages
English (en)
Japanese (ja)
Inventor
純平 ▲高▼木
直史 竹中
尚平 石村
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2023528835A priority Critical patent/JP7422948B2/ja
Priority to PCT/JP2021/022851 priority patent/WO2022264308A1/fr
Publication of WO2022264308A1 publication Critical patent/WO2022264308A1/fr

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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0087—Indoor units, e.g. fan coil units with humidification means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/42—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger characterised by the use of the condensate, e.g. for enhanced cooling
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/18—Air-humidification, e.g. cooling by humidification by injection of steam into the air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F24F2110/22—Humidity of the outside air

Definitions

  • the present disclosure relates to air conditioners, and particularly to humidification operation.
  • Patent Document 1 As a conventional humidifying means, a humidifying means using a heat pump air conditioner has been proposed (see Patent Document 1, for example).
  • the air conditioner described in Patent Document 1 collects water generated by the outdoor unit during heating, conveys the collected water to the indoor unit side by a pump or the like, and uses the conveyed water to cool the room. Humidify. In the air conditioner, the colder the outdoor air temperature becomes, the more likely frost is formed on the outdoor heat exchanger that functions as an evaporator and exchanges heat between the outdoor air and the refrigerant.
  • an air conditioner has been proposed that can perform a defrost operation to melt the frost attached to an outdoor heat exchanger that exchanges heat between the outside air and the refrigerant as an evaporator in an environment where the outside air temperature is low (for example, Patent Document 2).
  • the air conditioner described in Patent Document 1 starts heating operation when the outdoor heat exchanger is dry, so it takes time to actually collect water. Therefore, it is difficult to simultaneously and continuously perform heating and humidification, and the responsiveness until the room is actually humidified is low.
  • the air conditioner described in Patent Document 2 is mainly intended to melt the frost adhering to the outdoor heat exchanger, and does not use the melted frost as humidification water.
  • the present disclosure is intended to solve the above problems, and it is possible to perform heating and humidification simultaneously and continuously, and use melted frost as humidification water to actually humidify the room.
  • An object of the present invention is to provide an air conditioner with high efficiency.
  • the air conditioner according to the present disclosure includes a compressor, a flow path switching device, an indoor heat exchanger, a pressure reducing device, and a plurality of parallel heat exchangers connected in parallel with each other.
  • a flow rate adjusting device that adjusts the flow rate of the refrigerant discharged by the indoor heat exchanger, an indoor fan that sends indoor air to the indoor heat exchanger, and a plurality of parallel heat exchangers.
  • an air conditioner has a water collecting device that collects water generated from a plurality of parallel heat exchangers, and a heating device that heats and evaporates the water collected in the water collecting device.
  • the air conditioner includes a conveying device for conveying the air containing water vapor generated by the heating device to the indoor space, and a conveying device arranged in the indoor space for conveying the air containing water vapor conveyed by the conveying device to the indoor space. and a humidifier that discharges to the
  • the air conditioner includes a control device, and the control device has a continuous humidification/heating operation mode. In the continuous humidification/heating operation mode, moisture obtained by defrosting is collected and heated to vaporize it.
  • the air conditioner can perform heating and humidification simultaneously and continuously, and can use the melted frost as humidification water to increase the responsiveness until the room is actually humidified.
  • FIG. 1 is a schematic configuration diagram showing the configuration of an air conditioner according to an embodiment
  • FIG. 2 is a block diagram showing an example of a configuration of a control device in FIG. 1
  • FIG. FIG. 4 is a diagram showing the flow of refrigerant in the air conditioner of the embodiment in the cooling operation mode
  • FIG. 4 is a ph diagram in a cooling operation mode in the air conditioner of the embodiment
  • FIG. 4 is a diagram showing the flow of refrigerant in the air conditioner of the embodiment in the normal heating operation mode
  • 4 is a ph diagram in the normal heating operation mode of the air conditioner of the embodiment
  • FIG. 4 is a diagram showing the flow of refrigerant in a continuous heating operation mode or a continuous humidification/heating operation mode in the air conditioner of the embodiment; 4 is a ph diagram during a continuous heating operation mode or a continuous humidification/heating operation mode in the air conditioner of the embodiment; FIG. 4 shows a control flow of the humidification unit in the continuous humidification/heating operation mode of the air conditioner according to the embodiment.
  • FIG. 1 is a schematic configuration diagram showing the configuration of an air conditioner 100 according to an embodiment.
  • the air conditioner 100 is a device that adjusts air in an indoor space to be air-conditioned.
  • the air conditioner 100 uses a heat pump cycle that circulates a refrigerant, and performs a cooling operation mode and a heating operation mode.
  • the air conditioner 100 has an outdoor unit 10, an indoor unit 20, and a humidifying unit 30.
  • the outdoor unit 10 and the indoor unit 20 are connected by a first extension pipe 21 and a second extension pipe 22, and the indoor unit 20 and the humidification unit 30 are connected by an indoor/outdoor connection duct (not shown). It is
  • the air conditioner 100 further has a control device 90 .
  • the control device 90 controls various operation modes such as a cooling operation mode and a heating operation mode of the outdoor unit 10 and the indoor unit 20 .
  • the heating operation mode includes a normal heating operation mode, a continuous heating operation mode, a continuous humidification/heating operation mode, and the like.
  • the control device 90 controls humidification of the indoor space by controlling each device included in the humidification unit 30 .
  • the outdoor unit 10 includes a compressor 1, a flow path switching device 2, a first parallel heat exchanger 41 and a second parallel heat exchanger 42, a first outdoor fan 61 and a second outdoor fan 62, a pressure reducing device 3, and a flow rate It has an adjustment device 7 .
  • the outdoor unit 10 also has a first main opening/closing device 71 , a second main opening/closing device 72 , a first auxiliary opening/closing device 81 , and a second auxiliary opening/closing device 82 .
  • the outdoor unit 10 also has a first outdoor pressure sensor 91 and a second outdoor pressure sensor 92 , and a first outdoor temperature/humidity sensor 93 and a second outdoor temperature/humidity sensor 94 .
  • the indoor unit 20 has an indoor heat exchanger 5, an indoor fan 63, an indoor pressure sensor 95, a temperature sensor 96, an indoor temperature/humidity sensor 97, and a humidifier 34.
  • the outdoor unit 10 and the indoor unit 20 are connected by a first extension pipe 21 and a second extension pipe 22 .
  • the air conditioner 100 having one outdoor unit 10 and one indoor unit 20 is exemplified, but the air conditioner 100 having two or more outdoor units 10 and indoor units 20 It's okay.
  • the humidifying unit 30 has a water collecting device 31, a heating device 32, a conveying device 33, and a humidifying device 34.
  • the humidification unit 30 also has a transfer hose 36 and a drainage device 35 .
  • the humidifying unit 30 and the indoor unit 20 are connected by a transfer hose 36 .
  • the humidification unit 30 also has a water level sensor 98 or a weight sensor 99 .
  • the humidifying unit 30 collects water condensed in the outdoor unit 10 with a water collecting device 31, evaporates the water into water vapor with a heating device 32, conveys air containing water vapor indoors with a conveying device 33, and humidifies the humidifying device 34. to supply air containing water vapor to the room.
  • the refrigerant circuit 14 is a refrigerant circuit formed by connecting the refrigerant pipes 16 .
  • the refrigerant pipe 16 is a pipe through which a refrigerant flows.
  • the refrigerant circuit 14 has a main circuit 15 and a bypass circuit 18 .
  • the main circuit 15 is the main circuit of the refrigerant circuit 14 in the air conditioner 100 .
  • the air conditioner 100 includes a compressor 1, a flow path switching device 2, a first parallel heat exchanger 41 and a second parallel heat exchanger 42, a pressure reducing device 3, and an indoor heat exchanger 5, which are connected by refrigerant pipes 16. together constitute a main circuit 15, which is a refrigerant circuit in which refrigerant circulates.
  • the discharge side of the compressor 1 and the flow path switching device 2 are connected by a discharge pipe 23 .
  • the suction side of the compressor 1 and the flow path switching device 2 are connected by a suction pipe 24 .
  • the discharge pipe 23 and the suction pipe 24 form part of the refrigerant pipe 16 .
  • the first extension pipe 21 and the second extension pipe 22 described above form part of the refrigerant pipe 16 in the main circuit 15 .
  • the refrigerant pipes 16 forming the main circuit 15 have parallel pipes 28 .
  • the parallel pipe 28 is a portion of the refrigerant pipe 16 in which the refrigerant circuit 14 is formed as a parallel circuit in the main circuit 15 forming a portion between the flow switching device 2 and the pressure reducing device 3 .
  • the parallel pipe 28 has a first connection pipe 25 and a second connection pipe 26 .
  • a first parallel heat exchanger 41 is connected to the first connection pipe 25
  • a second parallel heat exchanger 42 is connected to the second connection pipe 26 .
  • the number of connecting pipes constituting the parallel pipe 28, that is, the number of parallel circuits is the same as the number of heat exchangers such as the first parallel heat exchanger 41 and the second parallel heat exchanger .
  • the bypass circuit 18 is the refrigerant circuit 14 that branches part of the high-pressure refrigerant discharged from the compressor 1 and supplies the refrigerant to the first parallel heat exchanger 41 and the second parallel heat exchanger 42 for defrosting. . Note that defrosting is to remove frost from the evaporator.
  • the refrigerant circuit 14 between the compressor 1 and the flow switching device 2 and the refrigerant circuit 14 between the first parallel heat exchanger 41 and the first main opening/closing device 71 are connected.
  • Circuit 14 is referred to as bypass circuit 18 .
  • the refrigerant circuit 14 between the compressor 1 and the flow switching device 2 and the refrigerant circuit 14 between the second parallel heat exchanger 42 and the second main opening/closing device 72 are connected.
  • Refrigerant circuit 14 to do is called bypass circuit 18 .
  • the refrigerant pipe 16 forming the bypass circuit 18 is called a bypass pipe 27 .
  • the bypass circuit 18 connects the discharge side of the compressor 1 and a plurality of parallel heat exchangers, and includes a bypass pipe 27 through which part of the refrigerant discharged from the compressor 1 branches and flows.
  • the bypass circuit 18 is composed of a bypass pipe 27, and the bypass pipe 27 is connected to the flow regulating device 7, the first auxiliary opening/closing device 81, and the second auxiliary opening/closing device 82.
  • the bypass pipe 27 connects the discharge pipe 23 to the first connection pipe 25 and the second connection pipe 26 while bypassing the flow path switching device 2 .
  • a portion of the refrigerant branches and flows.
  • the bypass pipe 27 may be configured to connect the first connection pipe 25 and the second connection pipe 26 with the refrigerant pipe 16 that connects the flow path switching device 2 and the first extension pipe 21 . That is, one end of the bypass pipe 27 is connected to the discharge pipe 23 or the refrigerant pipe 16 connecting the flow path switching device 2 and the first extension pipe 21, and the other end is branched. It is connected to the connecting pipe 25 or the second connecting pipe 26 .
  • the flow regulating device 7 is connected to the bypass pipe 27 between the discharge pipe 23 and the first connection pipe 25 and the second connection pipe 26.
  • the first auxiliary opening/closing device 81 is connected to the bypass pipe 27 between the flow regulating device 7 and the first connection pipe 25 .
  • the second auxiliary opening/closing device 82 is connected to the bypass pipe 27 between the flow regulating device 7 and the second connection pipe 26 .
  • the bypass pipe 27 between the flow regulating device 7 and the first auxiliary opening/closing device 81 and the second auxiliary opening/closing device 82 is connected between the flow regulating device 7 and the first auxiliary opening/closing device 81 and the flow regulating device 7 and the second auxiliary opening/closing device.
  • a first sub-opening/closing device 81 is provided on one branch of the bypass pipe 27
  • a second sub-opening/closing device 82 is provided on the other pipe.
  • Freon refrigerant HFO refrigerant, or the like
  • Fluorocarbon refrigerants include, for example, R32, R125, R134, etc., which are HFC refrigerants, and R410A, R407c, R404A, etc., which are mixed refrigerants.
  • HFO refrigerants include, for example, HFO-1234yf, HFO-1234ze(E), HFO-1234ze(Z), and the like.
  • refrigerants circulating in the refrigerant circuit 14 include CO2 refrigerant, HC refrigerant, ammonia refrigerant, mixed refrigerants of the above refrigerants such as mixed refrigerants of R32 and HFO-1234yf, and the like.
  • Refrigerants used in heat pumps can be used.
  • the HC refrigerant is, for example, propane or isobutane refrigerant.
  • Each device included in the air conditioner 100 (Device included in outdoor unit 10)
  • the compressor 1 sucks a low-temperature, low-pressure refrigerant, compresses the sucked refrigerant, converts it into a high-temperature, high-pressure refrigerant, and discharges it.
  • the flow switching device 2 switches the direction of refrigerant flow in the refrigerant circuit, and is, for example, a four-way valve.
  • the air conditioner 100 can switch between the cooling operation mode and the heating operation mode by switching the flow direction of the refrigerant with the channel switching device 2 .
  • the direction of the solid line arrow indicates the direction of refrigerant flow in the heating operation mode
  • the direction of the broken line arrow indicates the direction of refrigerant flow in the cooling operation mode.
  • the first parallel heat exchanger 41 and the second parallel heat exchanger 42 are connected to parallel pipes 28 respectively.
  • the first parallel heat exchanger 41 is connected to the first connecting pipe 25 and the second parallel heat exchanger 42 is connected to the second connecting pipe 26 .
  • the first parallel heat exchanger 41 and the second parallel heat exchanger 42 are, for example, outdoor heat exchangers that exchange heat between the outside air, which is outdoor air, and the refrigerant.
  • the first parallel heat exchanger 41 and the second parallel heat exchanger 42 function as condensers during the cooling operation mode, and function as evaporators during the heating operation mode.
  • the first parallel heat exchanger 41 and the second parallel heat exchanger 42 are arranged in parallel with each other.
  • the outdoor unit 10 has a first parallel heat exchanger 41 and a second parallel heat exchanger 42, and has a plurality of heat exchangers.
  • the configuration in which two heat exchangers are arranged in parallel as the first parallel heat exchanger 41 and the second parallel heat exchanger 42 is illustrated.
  • a configuration in which the heat exchangers are arranged in parallel may be used.
  • the number of heat exchangers in the outdoor unit 10 may be one.
  • the first parallel heat exchanger 41 and the second parallel heat exchanger 42 are assumed to have the same heat exchange area, heat exchange rate, and the like, and to have the same capacity.
  • the first outdoor fan 61 is arranged near the first parallel heat exchanger 41 .
  • the first outdoor fan 61 sends outdoor air to the first parallel heat exchanger 41 .
  • the second outdoor fan 62 is arranged near the second parallel heat exchanger 42 .
  • the second outdoor fan 62 sends outdoor air to the second parallel heat exchanger 42 .
  • the number of outdoor fans in the outdoor unit 10 of the embodiment is two, the first outdoor fan 61 and the second outdoor fan 62, but the number of outdoor fans may be three or more. That is, the plurality of outdoor fans are arranged corresponding to the plurality of parallel heat exchangers, respectively, and send air to the plurality of parallel heat exchangers.
  • the decompression device 3 decompresses and expands the refrigerant.
  • the decompression device 3 in the embodiment is, for example, an electronic expansion valve whose opening can be adjusted.
  • the opening degree of the decompression device 3 may be adjusted by the control device 90 .
  • the decompression device 3 is installed in the outdoor unit 10 , but the decompression device 3 may be installed in the indoor unit 20 .
  • the first main opening/closing device 71 is connected to the first connection pipe 25 .
  • the first main opening/closing device 71 includes, in the refrigerant circuit 14 between the first parallel heat exchanger 41 and the flow path switching device 2, the confluence portion 13 where the first connection pipe 25 and the second connection pipe 26 join, and the first It is connected to the first connection pipe 25 with the parallel heat exchanger 41 .
  • a first auxiliary switchgear 81 is provided in the middle of the bypass circuit 18 in the first connecting pipe 25 between the first main switchgear 71 and the first parallel heat exchanger 41.
  • a bypass pipe 27 is connected.
  • the first main switchgear 71 is a device that adjusts the flow rate of the refrigerant flowing through the first connecting pipe 25 in the main circuit 15 . Refrigerant flows through the first parallel heat exchanger 41 when the first main opening/closing device 71 is open, and refrigerant does not flow through the first parallel heat exchanger 41 when the first main opening/closing device 71 is closed.
  • the second main switchgear 72 is connected to the second connection pipe 26 .
  • the second main opening/closing device 72 includes the confluence portion 13 where the first connection pipe 25 and the second connection pipe 26 join, and the second It is connected to the second connection pipe 26 between the parallel heat exchanger 42 .
  • a second auxiliary switchgear 82 is provided in the middle of the bypass circuit 18 in the second connecting pipe 26 between the second main switchgear 72 and the second parallel heat exchanger 42.
  • a bypass pipe 27 is connected.
  • the second main switchgear 72 is a device that adjusts the flow rate of the refrigerant flowing through the second connecting pipe 26 in the main circuit 15 . Refrigerant flows through the second parallel heat exchanger 42 when the second main switching device 72 is open, and refrigerant does not flow through the second parallel heat exchanger 42 when the second main switching device 72 is closed.
  • the first main opening/closing device 71 and the second main opening/closing device 72 may be devices capable of opening and closing the flow path.
  • the first main opening/closing device 71 and the second main opening/closing device 72 are configured by, for example, an electromagnetic valve, a four-way valve, a three-way valve, or a two-way valve.
  • a main switchgear such as a first main switchgear 71 and a second main switchgear 72, is provided for each parallel heat exchanger.
  • the flow regulating device 7 decompresses and expands the refrigerant.
  • the flow rate adjusting device 7 also adjusts the flow rate of the refrigerant flowing through the bypass pipe 27 in the bypass circuit 18 .
  • the flow rate adjusting device 7 is provided in the bypass pipe 27 and adjusts the flow rate of the refrigerant discharged by the compressor 1 .
  • the opening degree of the flow rate adjusting device 7 is adjusted by the control device 90 .
  • the flow regulating device 7 is, for example, an electronic expansion valve whose opening can be adjusted.
  • the first auxiliary switchgear 81 is a device that adjusts the flow rate of refrigerant flowing through the bypass pipe 27 in the bypass circuit 18 .
  • the refrigerant flows between the discharge pipe 23 and the first connection pipe 25, and when the first sub switchgear 81 is closed, the discharge pipe 23 and the first connection pipe 25 Refrigerant does not flow between
  • the second auxiliary switchgear 82 is a device that adjusts the flow rate of the refrigerant flowing through the bypass pipe 27 in the bypass circuit 18 .
  • the second auxiliary switchgear 82 When the second auxiliary switchgear 82 is open, the refrigerant flows between the discharge pipe 23 and the second connection pipe 26, and when the second auxiliary switchgear 82 is closed, the discharge pipe 23 and the second connection pipe 26 Refrigerant does not flow between
  • the first auxiliary opening/closing device 81 and the second auxiliary opening/closing device 82 may be devices capable of opening and closing the flow path.
  • the first auxiliary opening/closing device 81 and the second auxiliary opening/closing device 82 are configured by, for example, an electromagnetic valve, a four-way valve, a three-way valve, or a two-way valve.
  • Sub switchgears such as the first sub switchgear 81 and the second sub switchgear 82 are provided corresponding to the parallel heat exchangers.
  • the first outdoor pressure sensor 91 is provided between the first parallel heat exchanger 41 and the decompression device 3 in the first connecting pipe 25 .
  • the first outdoor pressure sensor 91 detects the pressure of the refrigerant flowing through the first connecting pipe 25 .
  • the first parallel heat exchanger 41 functions as a condenser
  • the first outdoor pressure sensor 91 functions as a condensation pressure sensor.
  • the first outdoor pressure sensor 91 functions as an evaporating pressure sensor.
  • the second outdoor pressure sensor 92 is provided between the second parallel heat exchanger 42 and the decompression device 3 in the second connecting pipe 26 .
  • a second outdoor pressure sensor 92 detects the pressure of the refrigerant flowing through the second connection pipe 26 .
  • the second parallel heat exchanger 42 functions as a condenser
  • the second outdoor pressure sensor 92 functions as a condensation pressure sensor.
  • the second outdoor pressure sensor 92 functions as an evaporating pressure sensor.
  • the first outdoor pressure sensor 91 or the second outdoor pressure sensor 92 may be attached to the suction side of the compressor 1 to detect the suction pressure. Further, the first outdoor pressure sensor 91 and the second outdoor pressure sensor can be replaced with a temperature sensor (not shown) for detecting the temperature of the refrigerant as long as the refrigerant is in a gas-liquid two-phase state. In this case, the temperature value detected by the temperature sensor is converted into the pressure of the refrigerant as the saturation temperature. When detecting the temperature of the refrigerant, the temperature may be detected directly by contacting the temperature sensor with the refrigerant, or by detecting the temperature of the outer surface of the pipe or heat exchanger. An indirect method may also be used.
  • the first outdoor temperature/humidity sensor 93 is provided in the first parallel heat exchanger 41 and detects the outdoor temperature and outdoor humidity of the outdoor air near the first parallel heat exchanger 41 .
  • a second outdoor temperature/humidity sensor 94 is provided in the second parallel heat exchanger 42 and detects the outdoor temperature and outdoor humidity of the outdoor air near the second parallel heat exchanger 42 .
  • the indoor heat exchanger 5 for example, exchanges heat between the indoor air, which is the space to be air-conditioned, and the refrigerant.
  • the indoor heat exchanger 5 functions as an evaporator during the cooling operation mode, and functions as a condenser during the heating operation mode.
  • the indoor unit 20 has one indoor heat exchanger 5, but the indoor unit 20 may have two or more indoor heat exchangers 5. .
  • the indoor blower 63 is arranged near the indoor heat exchanger 5.
  • the indoor air blower 63 sends indoor air to the indoor heat exchanger 5 .
  • the indoor pressure sensor 95 is provided in the indoor heat exchanger 5 and detects the pressure of the refrigerant flowing through the indoor heat exchanger 5 .
  • the indoor pressure sensor 95 functions as a condensation pressure sensor.
  • the indoor pressure sensor 95 functions as an evaporating pressure sensor.
  • the indoor pressure sensor 95 may be attached to the discharge side of the compressor 1 and detect the discharge pressure. Also, the indoor pressure sensor 95 can be replaced by a temperature sensor 96 that detects the temperature of the refrigerant, as long as the refrigerant is in a gas-liquid two-phase state. In this case, the temperature value detected by the temperature sensor is converted into the pressure of the refrigerant as the saturation temperature.
  • a temperature sensor 96 is attached to a portion where the refrigerant is in a gas-liquid two-phase state, and is used to detect the saturation temperature of the refrigerant.
  • the indoor temperature/humidity sensor 97 is provided in the indoor heat exchanger 5 and detects the temperature and relative humidity of the indoor air.
  • the humidifying device 34 is a device that constitutes the humidifying unit 30 and is a device that is arranged inside the indoor unit 20 .
  • the humidifier 34 is arranged at a position through which the air blown by the indoor fan 63 passes.
  • the humidifier 34 is a device for humidifying the indoor air blown by the indoor blower 63 to humidify the indoor space.
  • a humidified air outlet 34a is formed in the humidifier 34, and air containing water vapor collected in the water collection device 31 of the humidifier unit 30 is discharged from the outlet 34a.
  • the humidifying device 34 is arranged in the indoor space, and discharges the air containing water vapor conveyed by the conveying device 33 into the indoor space.
  • the water collecting device 31 is a device for collecting condensed water generated in the outdoor unit 10 .
  • the water collecting device 31 is arranged, for example, below the first parallel heat exchanger 41 and the second parallel heat exchanger 42, and collects condensed water generated in the first parallel heat exchanger 41 and the second parallel heat exchanger 42. to collect water.
  • the water collecting device 31 may be, for example, a drain pan provided in the outdoor unit 10, or a saucer provided separately from the drain pan to collect the condensed water.
  • the heating device 32 is a device that heats and evaporates the water collected by the water collecting device 31 .
  • the heating device 32 is attached to the water collecting device 31 or is located near the water collecting device 31 and heats the water collected by the water collecting device 31 .
  • the heating device 32 may be, for example, a submersible heater or an external heater.
  • the heating device 32 is used to melt the frozen water if the water collected in the water collecting device 31 is frozen.
  • the conveying device 33 is provided on a conveying hose 36 and conveys air containing water vapor near the water collecting device 31 to the indoor unit 20 .
  • the air near the water collecting device 31 is, for example, the air in the water collecting device 31 or the air above the water collecting device 31 and contains water vapor heated by the heating device 32 and vaporized. This water vapor is obtained by heating the water collected by the water collection device 31 by the heating device 32 and vaporizing it.
  • the conveying device 33 is, for example, a pump, which pumps up the vapor vaporized by the heating device 32 and conveys it to the indoor unit 20 .
  • the air containing water vapor conveyed by the conveying device 33 is supplied to the humidifying device 34 and discharged through the humidifying device 34 into the indoor space.
  • the conveying device 33 conveys the air containing water vapor produced by the heating device 32 to the indoor space.
  • the transport hose 36 has one end connected to the humidifier 34 arranged in the indoor unit 20 and the other end connected to the water collecting device 31 arranged in the humidifier unit 30 . Air mainly flows through the interior of the transport hose 36 .
  • the conveying device 33 and the draining device 35 are provided between the humidifying device 34 and the water collecting device 31 at the conveying hose 36 . Part of the water vapor conveyed toward the indoor unit 20 is condensed in the middle of the conveying hose 36 . Therefore, the conveying hose 36 may be attached vertically to the bottom surface of the water collecting device 31 so that the water condensed in the conveying hose 36 is collected in the water collecting device 31 .
  • the drainage device 35 is a device for discharging condensed water condensed inside the transfer hose 36 .
  • the drain device 35 is, for example, an on-off valve, and can drain water accumulated in the transfer hose 36 by opening the valve. Opening and closing of the valve of the drainage device 35 is controlled by an opening/closing device control section 196 (see FIG. 2) of the control device 90, which will be described later. However, the opening and closing of the valve of the drainage device 35 may be performed by the user without using the control device 90 .
  • the water level sensor 98 detects changes in the water level of the water collected in the water collecting device 31 .
  • a water level sensor 98 is mounted inside the water collecting device 31 .
  • a weight sensor 99 detects the weight of water collected in the water collecting device 31 .
  • the humidification unit 30 may have either one of the water level sensor 98 and the weight sensor 99 or may have both the water level sensor 98 and the weight sensor 99 .
  • FIG. 2 is a block diagram showing an example of the configuration of the control device 90 of FIG.
  • the control device 90 controls various operations such as the cooling operation mode and the heating operation mode of the air conditioner 100, and performs control such as maintaining or changing the set room temperature.
  • the control device 90 includes an operating state determination section 190 , a storage section 191 and a timer section 192 .
  • the control device 90 also includes a compressor control section 193 , a decompression mechanism control section 194 , a blower control section 195 , an opening/closing device control section 196 , a heating device control section 197 and a carrier device control section 198 .
  • the operating state determination unit 190 is based on the operating information indicating the operating state of the air conditioner 100 supplied from the outside and the detection information by various sensors. make a judgment.
  • the storage unit 191 pre-stores programs, data, and the like necessary for control performed by the control device 90 .
  • the timer unit 192 is composed of, for example, a timer or a real-time clock, and is used to obtain the current time and measure the set time.
  • the compressor control unit 193 controls the operating frequency of the compressor 1 .
  • the decompression mechanism control unit 194 controls the opening degrees of the flow rate adjusting device 7 and the decompression device 3 .
  • the fan control unit 195 controls the rotation speeds of the first outdoor fan 61 , the second outdoor fan 62 and the indoor fan 63 .
  • the opening/closing device control unit 196 controls opening degrees of the first main opening/closing device 71, the second main opening/closing device 72, the first auxiliary opening/closing device 81, the second auxiliary opening/closing device 82, the drainage device 35, and the like.
  • the heating device control unit 197 controls the start and stop of heating by the heating device 32 and the amount of heating.
  • the required amount of indoor humidification (kg/h) is approximately determined according to the type of housing, the volume of the room, and the like. If the amount of humidification supplied (kg/h) exceeds the required amount of humidification (kg/h), condensation may occur, or the humidity conditions required by the user cannot be obtained, so it is necessary to change the heating amount. There are cases. Therefore, it is desirable that the user of the air conditioner 100 can determine the amount of heating by inputting the room volume, the type of house, etc. using a remote control or the like.
  • the transport device control unit 198 drives and stops the transport device 33 and controls the amount of fluid transported.
  • the operating state determination unit 190 includes a first outdoor pressure sensor 91, a second outdoor pressure sensor 92, a first outdoor temperature/humidity sensor 93, a second outdoor temperature/humidity sensor 94, an indoor pressure sensor 95, a temperature sensor 96, and an indoor temperature/humidity sensor. 97, the detection data of the water level sensor 98 and the weight sensor 99 are received.
  • the control device 90 is composed of, for example, a microcomputer having a control processing unit such as a CPU (Central Processing Unit).
  • the control device 90 also has a storage device (not shown), and has data in which processing procedures related to control and the like are programmed. Then, the control arithmetic processing unit executes processing based on the data of the program to realize control.
  • the operation of the air conditioner 100 includes modes such as a cooling operation mode, a normal heating operation mode, a continuous heating operation mode, and a continuous humidifying/heating operation mode.
  • a cooling operation mode both the first parallel heat exchanger 41 and the second parallel heat exchanger 42 function as condensers.
  • the normal heating operation mode both the first parallel heat exchanger 41 and the second parallel heat exchanger 42 function as evaporators.
  • the first parallel heat exchanger 41 and the second parallel heat exchanger 42 are alternately defrosted while continuing the heating operation mode.
  • the first parallel heat exchanger 41 and the second parallel heat exchanger 42 are alternately defrosted while continuing the heating operation mode.
  • the moisture obtained by defrosting is used to continuously humidify the indoor space. .
  • FIG. 3 is a diagram showing the flow of refrigerant in the air conditioner 100 of the embodiment in the cooling operation mode.
  • FIG. 4 is a ph diagram in the cooling operation mode of the air conditioner 100 according to the embodiment.
  • the solid line arrows shown in FIG. 3 indicate the direction in which the coolant flows.
  • the vertical axis in FIG. 4 indicates the pressure P [Mpa], and the horizontal axis indicates the specific enthalpy h [kg/kJ].
  • points (a) to (d) in FIG. 4 indicate the state of the refrigerant in the portions denoted by the same symbols in FIG.
  • FIG. 3 The flow and state of the refrigerant in the air conditioner 100 in the cooling operation mode will be described with reference to FIGS. 3 and 4.
  • the flow path switching device 2 connects the discharge side of the compressor 1 to the first parallel heat exchanger 41 and the second parallel heat exchanger 42, A refrigerant circuit 14 is formed in which the suction side and the indoor heat exchanger 5 are connected.
  • the flow regulator 7 is closed.
  • the first main opening/closing device 71 and the second main opening/closing device 72 are opened.
  • a solid line indicates a portion through which the refrigerant flows, and a broken line indicates a portion through which the refrigerant does not flow.
  • the compressor 1 compresses the sucked low-temperature, low-pressure gaseous refrigerant and discharges the high-temperature, high-pressure gaseous refrigerant.
  • the refrigerant is compressed so as to be heated by the adiabatic efficiency of the compressor 1 compared with the case of adiabatic compression with isentropic lines. This change in refrigerant is represented by a line from point (a) to point (b) in FIG.
  • the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 passes through the flow path switching device 2 and branches into two. It passes through the opening/closing device 71 and flows into the first parallel heat exchanger 41 functioning as a condenser.
  • the other branched refrigerant flows through the second connecting pipe 26, passes through the second main opening/closing device 72, and flows into the second parallel heat exchanger 42 functioning as a condenser.
  • the refrigerant that has flowed into the first parallel heat exchanger 41 and the second parallel heat exchanger 42 flows through the first outdoor fan 61 and the second outdoor fan 62 in the first parallel heat exchanger 41 and the second parallel heat exchanger 42. It exchanges heat with the outdoor air to be sent, condenses and liquefies, and becomes medium-temperature, high-pressure liquid refrigerant.
  • the change in the refrigerant in the first parallel heat exchanger 41 and the second parallel heat exchanger 42 is the point (b ) to point (c).
  • the medium-temperature and high-pressure liquid refrigerants flowing out from the first parallel heat exchanger 41 and the second parallel heat exchanger 42 flow into the decompression device 3 after joining.
  • the medium-temperature, high-pressure liquid refrigerant that has flowed into the pressure reducing device 3 is expanded and decompressed in the pressure reducing device 3 to become a low-temperature, low-pressure gas-liquid two-phase refrigerant.
  • the refrigerant change in the decompression device 3 is performed under a constant enthalpy. A change in the refrigerant at this time is represented by a vertical line extending from point (c) to point (d) in FIG.
  • the low-temperature, low-pressure gas-liquid two-phase refrigerant flowing out of the decompression device 3 passes through the second extension pipe 22 and flows into the indoor heat exchanger 5 functioning as an evaporator.
  • the refrigerant that has flowed into the indoor heat exchanger 5 exchanges heat with the indoor air sent by the indoor blower 63 and evaporates to become a low-temperature, low-pressure gaseous refrigerant.
  • the indoor air is cooled, and cooling is performed in the room.
  • the change in refrigerant in the indoor heat exchanger 5 is represented by a straight line extending from point (d) to point (a) in FIG.
  • the low-temperature and low-pressure gaseous refrigerant that has flowed out of the indoor heat exchanger 5 passes through the first extension pipe 21 and the flow path switching device 2 , is sucked into the compressor 1 , and is compressed by the compressor 1 .
  • FIG. 5 is a diagram showing the flow of refrigerant in the normal heating operation mode in the air conditioner 100 of the embodiment.
  • FIG. 6 is a ph diagram in the normal heating operation mode of the air conditioner 100 of the embodiment.
  • the solid line arrow shown in FIG. 5 indicates the direction in which the coolant flows.
  • the vertical axis in FIG. 6 indicates the pressure P [Mpa], and the horizontal axis indicates the specific enthalpy h [kg/kJ].
  • points (a) to (d) in FIG. 6 show the state of the refrigerant in the portions denoted by the same symbols in FIG. The flow and state of the refrigerant in the air conditioner 100 in the normal heating operation mode will be described with reference to FIGS. 5 and 6.
  • FIG. 5 is a diagram showing the flow of refrigerant in the normal heating operation mode in the air conditioner 100 of the embodiment.
  • FIG. 6 is a ph diagram in the normal heating operation mode of the air conditioner 100 of the embodiment.
  • the flow path switching device 2 connects the discharge side of the compressor 1 and the indoor heat exchanger 5, and the suction side of the compressor 1 and the first parallel heat exchanger.
  • Refrigerant circuit 14 to which 41 and second parallel heat exchanger 42 are connected is formed.
  • the flow regulator 7 is closed.
  • the first main opening/closing device 71 and the second main opening/closing device 72 are opened.
  • a solid line indicates a portion through which the refrigerant flows, and a broken line indicates a portion through which the refrigerant does not flow.
  • the compressor 1 compresses the sucked refrigerant in a low-temperature, low-pressure gas state and discharges it in a high-temperature, high-pressure gas state.
  • the refrigerant is compressed so as to be heated by the adiabatic efficiency of the compressor 1 compared with the case of adiabatic compression with isentropic lines.
  • This refrigerant change is represented by a line from point (a) to point (b) in FIG.
  • the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 flows out of the outdoor unit 10 after passing through the flow path switching device 2 .
  • the high-temperature and high-pressure gaseous refrigerant that has flowed out of the outdoor unit 10 passes through the first extension pipe 21, flows into the indoor unit 20, and flows into the indoor heat exchanger 5 functioning as a condenser.
  • the refrigerant that has flowed into the indoor heat exchanger 5 exchanges heat with the room air in the indoor heat exchanger 5, condenses and liquefies to become medium-temperature, high-pressure liquid refrigerant. At this time, the indoor air is warmed, and heating is performed in the room. Considering the pressure loss, the change in refrigerant in the indoor heat exchanger 5 is represented by a straight line extending from point (b) to point (c) in FIG.
  • the medium-temperature and high-pressure liquid refrigerant that has flowed out of the indoor heat exchanger 5 returns to the outdoor unit 10 through the second extension pipe 22 .
  • the liquid refrigerant that has flowed into the outdoor unit 10 flows into the decompression device 3 .
  • the medium-temperature and high-pressure refrigerant that has flowed into the decompression device 3 is expanded and decompressed to become medium-pressure gas-liquid two-phase refrigerant.
  • the refrigerant change in the decompression device 3 is performed under a constant enthalpy. A change in the refrigerant at this time is represented by a vertical line extending from point (c) to point (d) in FIG.
  • the decompression device 3 is controlled so that the degree of supercooling (subcooling) of medium-temperature and high-pressure liquid refrigerant is about 5K to 20K.
  • the medium-pressure gas-liquid two-phase refrigerant that has flowed into the first parallel heat exchanger 41 and the second parallel heat exchanger 42 is mixed with the outdoor air in the first parallel heat exchanger 41 and the second parallel heat exchanger 42.
  • the heat is exchanged and the refrigerant evaporates into a low-temperature, low-pressure gaseous refrigerant.
  • the change in the refrigerant in the first parallel heat exchanger 41 and the second parallel heat exchanger 42 is the point (d ) to point (a).
  • the low-temperature, low-pressure gaseous refrigerant that has flowed out of the first parallel heat exchanger 41 and the second parallel heat exchanger 42 passes through the first connection pipe 25 and the second connection pipe 26, and flows through the first main switchgear 71 and the second connection pipe 26. After passing through the second main opening/closing device 72, they join. Thereafter, the low-temperature, low-pressure gaseous refrigerant passes through the flow path switching device 2 , is sucked into the compressor 1 , and is compressed by the compressor 1 .
  • FIG. 7 is a diagram showing the refrigerant flow in the continuous heating operation mode or the continuous humidification/heating operation mode in the air conditioner 100 of the embodiment.
  • FIG. 8 is a ph diagram in the continuous heating operation mode or the continuous humidification/heating operation mode in the air conditioner 100 of the embodiment.
  • the solid line arrows shown in FIG. 7 indicate the direction in which the coolant flows.
  • the vertical axis of FIG. 8 indicates the pressure P [Mpa], and the horizontal axis indicates the specific enthalpy h [kg/kJ].
  • points (a) to (f) in FIG. 8 indicate the state of the refrigerant in the portions denoted by the same symbols in FIG.
  • FIG. 7 The flow and state of the refrigerant in the air conditioner 100 in the continuous heating operation mode will be described with reference to FIGS. 7 and 8.
  • FIG. The continuous heating operation mode is performed when frost forms on the first parallel heat exchanger 41 and the second parallel heat exchanger 42 during the normal heating operation mode.
  • the continuous heating operation mode is a mode in which some of the multiple parallel heat exchangers are defrosted and the others are evaporators.
  • the discharge side of the compressor 1 and the indoor heat exchanger 5 are connected by the flow switching device 2, and the suction side of the compressor 1 and the first parallel heat exchanger are connected.
  • 41 or the refrigerant circuit 14 to which the second parallel heat exchanger 42 is connected is formed.
  • one of the first parallel heat exchanger 41 and the second parallel heat exchanger 42 is selected as the target of defrosting and defrosting is performed. heat exchanger functions as an evaporator to continue the heating operation mode.
  • the open/closed states of the first main opening/closing device 71 and the second main opening/closing device 72 and the first sub-opening/closing device 81 and the second sub-opening/closing device 82 are alternately switched.
  • the target of defrosting is alternately switched between the first parallel heat exchanger 41 and the second parallel heat exchanger 42 by switching the opening/closing state of the opening/closing device.
  • the refrigerant flowing through the parallel pipe 28 and the bypass pipe 27 flows through the first parallel heat exchanger 41 or the second parallel heat exchanger 42 to be defrosted and the first parallel heat exchanger 41 or the second parallel heat exchanger 41 functioning as an evaporator. It switches by switching with the heat exchanger 42 .
  • the first parallel heat exchanger 41 functions as an evaporator
  • the second main opening/closing device 72 is closed
  • the second auxiliary opening/closing device 71 is closed.
  • the second parallel heat exchanger 42 becomes the target of defrosting.
  • the first parallel heat exchanger 41 becomes the target of defrosting
  • the second main opening/closing device 72 is opened, and the second By closing the auxiliary opening/closing device 82, the second parallel heat exchanger 42 functions as an evaporator.
  • the second parallel heat exchanger 42 is defrosted, and the first parallel heat exchanger 41 functions as an evaporator. A case will be described where the heating is continued.
  • the first parallel heat exchanger 41 is selected as the target of defrosting, only the flow of the refrigerant flowing through the first parallel heat exchanger 41 and the second parallel heat exchanger 42 is switched. It is the same as when the second parallel heat exchanger 42 is selected as the defrost target.
  • the discharge side of the compressor 1 and the indoor heat exchanger 5 are connected by the channel switching device 2, and the suction side of the compressor 1 and the first parallel heat exchanger 41 are connected.
  • a refrigerant circuit 14 to which is connected is formed.
  • the flow regulator 7 is now open.
  • the first main opening/closing device 71 is open, and the second main opening/closing device 72 is closed.
  • the first auxiliary opening/closing device 81 is closed, and the second auxiliary opening/closing device 82 is opened.
  • a solid line indicates a portion through which the refrigerant flows
  • a broken line indicates a portion through which the refrigerant does not flow.
  • the compressor 1 compresses the sucked low-temperature, low-pressure gaseous refrigerant and discharges the high-temperature, high-pressure gaseous refrigerant.
  • the refrigerant is compressed so as to be heated by the adiabatic efficiency of the compressor 1 compared with the case of adiabatic compression with isentropic lines.
  • a change in the refrigerant at this time is represented by a line extending from point (a) to point (b) in FIG.
  • a part of the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 passes through the flow path switching device 2 and the first extension pipe 21 and flows into the indoor heat exchanger 5 acting as a condenser.
  • the high-temperature, high-pressure gaseous refrigerant is heat-exchanged with the indoor air in the indoor heat exchanger 5, condenses and liquefies, and becomes medium-temperature, high-pressure liquid refrigerant.
  • the indoor air is warmed, and heating is performed in the room.
  • the change in refrigerant in the indoor heat exchanger 5 is represented by a straight line extending from point (b) to point (c) in FIG.
  • the medium-temperature, high-pressure liquid refrigerant that has flowed out of the indoor heat exchanger 5 passes through the second extension pipe 22 and flows into the decompression device 3 .
  • the medium-temperature and high-pressure refrigerant that has flowed into the decompression device 3 is expanded and decompressed to become medium-pressure gas-liquid two-phase refrigerant.
  • the refrigerant change in the decompression device 3 is performed under a constant enthalpy. A change in the refrigerant at this time is represented by a vertical line extending from point (c) to point (d) in FIG.
  • the medium-pressure gas-liquid two-phase refrigerant that has flowed out of the decompression device 3 joins with the refrigerant that has flowed through the second parallel heat exchanger 42, which is the target of defrosting, which will be described later, thereby increasing the enthalpy.
  • the gas-liquid two-phase refrigerant does not flow into the second parallel heat exchanger 42 to be defrosted, but flows into the first parallel heat exchanger 41 acting as an evaporator. Heat is exchanged with outdoor air, and it evaporates and becomes gas.
  • the change in refrigerant in the first parallel heat exchanger 41 is represented by a straight line extending from point (d) to point (a) in FIG.
  • the low-temperature and low-pressure gaseous refrigerant flowing out of the first parallel heat exchanger 41 passes through the first connection pipe 25, the first main opening/closing device 71, and then the flow switching device 2, and then is compressed. It is sucked into the machine 1 and compressed by the compressor 1.
  • the refrigerant change in the flow rate adjusting device 7 is performed under a constant enthalpy.
  • a change in the refrigerant at this time is represented by a vertical line extending from point (b) to point (e) in FIG.
  • the refrigerant decompressed in the flow rate adjusting device 7 passes through the second auxiliary switchgear 82, flows into the second connecting pipe 26, and flows into the second parallel heat exchanger 42 to be defrosted.
  • the refrigerant that has flowed into the second parallel heat exchanger 42 is cooled by heat exchange with frost adhering to the second parallel heat exchanger 42 .
  • the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 flows into the second parallel heat exchanger 42 to melt the frost adhering to the second parallel heat exchanger 42 .
  • a change in the refrigerant at this time is represented by a line extending from point (e) to point (f) in FIG.
  • the second parallel heat exchanger 42 is defrosted, and the refrigerant flowing out of the second parallel heat exchanger 42 joins the main circuit 15 .
  • the refrigerant that joins the main circuit 15 flows into the first parallel heat exchanger 41 acting as an evaporator and evaporates.
  • the control device 90 adjusts the opening degree of the flow rate adjusting device 7 .
  • the control device 90 determines the opening degree of the flow regulating device 7 in the continuous heating operation mode based on the operating state during the normal heating operation mode. Therefore, it is possible to defrost the first parallel heat exchanger 41 or the second parallel heat exchanger 42 to be defrosted while maintaining the heating capacity in the continuous heating operation mode.
  • the water collection device 31 of the humidification unit 30 collects and stores water produced by melting the frost on the first parallel heat exchanger 41 and the second parallel heat exchanger 42 at one place.
  • the presence or absence of frost formation is determined by the operating state determination unit 190 of the control device 90 .
  • the control device 90 determines that frost has formed, the control device 90 shifts to the continuous heating operation mode.
  • the operating state determination unit 190 of the control device 90 indicates that, for example, the evaporation temperature detected by the first outdoor temperature/humidity sensor 93 and the second outdoor temperature/humidity sensor 94 is lower than the preset evaporation temperature threshold. case, it is determined that there is frost formation.
  • the evaporation temperature threshold is stored in advance in the storage unit 191 of the control device 90, and the control device 90 refers to the evaporation temperature threshold stored in the storage unit 191 for determination.
  • the operating state determination unit 190 of the control device 90 determines, for example, when the saturation temperature converted from the suction pressure of the compressor 1 is significantly lower than the set outside air temperature set in advance, may be determined to be frosted.
  • the set outside air temperature is stored in advance in the storage unit 191 of the control device 90, and the control device 90 refers to the set outside air temperature stored in the storage unit 191 for determination.
  • the operating state determination unit 190 of the control device 90 determines that frost is formed when, for example, the temperature difference between the outside air temperature and the evaporating temperature is equal to or greater than a preset value and the elapsed time is equal to or greater than a certain period of time.
  • the outside air temperature is detected by the first outdoor temperature/humidity sensor 93 and the second outdoor temperature/humidity sensor 94, for example.
  • the evaporation temperature is calculated by converting the pressure detected by the first outdoor pressure sensor 91 and the second outdoor pressure sensor 92 by the control device 90, for example.
  • the preset value is stored in advance in the storage unit 191 of the control device 90, and the control device 90 refers to the value stored in the storage unit 191 for determination.
  • the elapsed time is measured by the timer 192 of the control device 90 .
  • the continuous heating operation mode is performed only when the room temperature detected by the room temperature/humidity sensor 97 approaches a preset set temperature and the frequency of the compressor 1 is equal to or lower than a preset set frequency value. may be set.
  • the set temperature and set frequency values are stored in advance in the storage unit 191 of the control device 90, and the control device 90 refers to the set temperature and set frequency stored in the storage unit 191 for determination.
  • the opening/closing device control unit 196 closes the first main opening/closing device 71 or the second main opening/closing device 72 corresponding to the heat exchanger to be defrosted. For example, as shown in FIG. 7, when the defrost target is the second parallel heat exchanger 42, the switching device control unit 196 closes the second main switching device 72 corresponding to the second parallel heat exchanger 42. .
  • the opening/closing device control section 196 of the control device 90 opens the second auxiliary opening/closing device 82 and opens the flow rate adjusting device 7 to adjust the degree of opening.
  • the switchgear control unit 196 also opens the first main switchgear 71 and closes the first sub switchgear 81 corresponding to the first parallel heat exchanger 41 functioning as an evaporator.
  • the defrost circuit connecting the compressor 1, the flow regulating device 7, the second auxiliary opening/closing device 82, and the second parallel heat exchanger 42 is opened in order, and the first parallel heat exchanger 41 functions as an evaporator.
  • the opening/closing device control section 196 further opens the first auxiliary opening/closing device 81 and the fourth opening/closing device, and opens the opening degree of the flow rate adjusting device 7 to a preset opening degree.
  • the switching device control section 196 closes the first main switching device 71 corresponding to the first parallel heat exchanger 41 . Further, when the target of defrosting is the first parallel heat exchanger 41, the opening/closing device control section 196 opens the first auxiliary opening/closing device 81, opens the flow rate adjusting device 7, and adjusts the opening degree.
  • the switchgear control unit 196 also opens the second main switchgear 72 and closes the second sub switchgear 82 corresponding to the second parallel heat exchanger 42 functioning as an evaporator.
  • the defrost circuit connecting the compressor 1, the flow rate adjusting device 7, the first auxiliary opening/closing device 81, and the first parallel heat exchanger 41 is opened in order, and the second parallel heat exchanger 42 functions as an evaporator.
  • the continuous heating operation mode in which defrosting is performed in the first parallel heat exchanger 41 is started.
  • the opening/closing device control section 196 further opens the first auxiliary opening/closing device 81 and the fourth opening/closing device, and opens the opening degree of the flow rate adjusting device 7 to a preset opening degree.
  • the continuous humidification/heating operation mode is an operation mode in which the indoor space is humidified during the normal heating operation mode or the continuous humidification/heating operation mode.
  • the continuous humidification/heating operation mode is set when the operating state determination unit 190 of the control device 90 determines that humidification needs to be performed during the normal heating operation mode or the continuous humidification/heating operation mode, or when the operation mode is set in advance. This is performed when the continuous humidification/heating operation mode is set.
  • the controller 90 controls the heating device 32 and the conveying device 33, and the air containing water vapor is supplied from the humidifying device 34. This is an operation mode that discharges to the indoor space.
  • the operating state determination unit 190 of the control device 90 determines that humidification is necessary, for example, when the indoor humidity detected by the indoor temperature/humidity sensor 97 is below a preset set humidity value. Further, the operating state determination unit 190 of the control device 90 determines that it is necessary to perform humidification when, for example, the continuous operation time in the normal heating operation mode or the continuous heating operation mode exceeds a preset set operation time. You can judge. A preset set humidity value or a preset set operation time is stored in advance in the storage unit 191 of the control device 90, and the control device 90 uses the set humidity and Refer to the set operating time.
  • FIG. 9 shows the control flow of the humidifying unit 30 in the continuous humidifying/heating operation mode of the air conditioner 100 according to the embodiment. The operation of the humidification unit in the continuous humidification/heating operation mode will be described with reference to FIG.
  • the control device 90 acquires the indoor humidity (step S1).
  • the indoor humidity is the relative humidity of the indoor space detected by the indoor temperature/humidity sensor 97 .
  • Control device 90 receives the relative humidity detected by indoor temperature and humidity sensor 97 .
  • the operating state determination unit 190 of the control device 90 calculates the required amount of humidification (kg/h), which is the amount of humidification required for the indoor space (step S2).
  • the required humidification amount (kg/h) is the amount of humidification required in the indoor space in the normal heating operation mode or the continuous heating operation mode.
  • the required amount of humidification is obtained from the absolute humidity obtained from the indoor temperature and relative humidity detected by the indoor temperature and humidity sensor 97 installed indoors, and the set relative humidity and set temperature set in advance as targets. It is calculated based on the difference from the set absolute humidity and the capacity (horsepower) of the air conditioner 100 . Specifically, the required amount of humidification (kg/h) is obtained by the following formula: volume of room x ventilation frequency x air density x required absolute humidity.
  • the capacity of the air conditioner 100 is selected according to the capacity of the room, the capacity of the room can be estimated from the capacity of the air conditioner 100 .
  • the set relative humidity and set temperature, or the set absolute humidity and the capacity (horsepower) of the air conditioner 100 are stored in advance in the storage unit 191 of the control device 90, and the control device 90 stores the The set relative humidity and set temperature or set absolute humidity stored in the unit 191 are referred to.
  • the required humidification amount (kg/h) corresponding to the outdoor temperature detected by the first outdoor temperature/humidity sensor 93 or the second outdoor temperature/humidity sensor 94 may be predetermined.
  • the control device 90 detects the outdoor temperature detected by the first outdoor temperature/humidity sensor 93 or the second outdoor temperature/humidity sensor 94.
  • the necessary humidification amount (kg/h) can be determined based on this.
  • the user can use a remote control, etc., to set the approximate number of ventilation times per hour, and calculate the required humidification amount (kg/h).
  • the expression may be multiplied by the ventilation volume (m 3 /h) calculated from the set number of ventilations per hour.
  • the operating state determination unit 190 of the control device 90 calculates the water collection speed (kg/h ) is calculated (step S3).
  • the amount of collected water is detected by a water level sensor 98 or a weight sensor 99 .
  • the amount of water collected may be directly weighed using a weight sensor 99 provided in the water collection device 31 and is based on the water level sensed using a water level sensor 98 mounted inside the water collection device 31. It may be calculated by the control device 90 .
  • the water collection rate (kg/h) is the amount of water collected in the water collection device 31 per hour.
  • the time for measuring the amount of increase in water is pre-stored in the storage unit 191 as a set time, for example, and the set time is measured by the timer 192 .
  • the amount of collected water is calculated based on the flow rate of air passing through the first parallel heat exchanger 41 and the second parallel heat exchanger 42 and detection by the first outdoor temperature/humidity sensor 93 and the second outdoor temperature/humidity sensor 94. It may be calculated based on the amount of change in the absolute humidity of the air.
  • the flow rate of air passing through the first parallel heat exchanger 41 and the second parallel heat exchanger 42 can be obtained from the rotational speeds of the first outdoor fan 61 and the second outdoor fan 62 .
  • the operating state determination unit 190 of the control device 90 determines whether the water collection speed (kg/h) in the water collection device 31 is the same as the calculated required humidification amount (kg/h), and determines whether the water collection speed (kg/ h) exceeds the required humidification amount (kg/h) (step S4). That is, the operating state determination unit 190 of the control device 90 determines whether or not the water collection speed (kg/h) in the water collection device 31 is equal to or greater than the calculated required humidification amount (kg/h).
  • the control device 90 either discharges air containing water vapor from the humidifying device 34 based on the result of comparing the water collection rate (kg/h) and the required amount of humidification (kg/h), or removes water vapor. By stopping the discharged air from the humidifier 34, the amount of humidification by the humidifier 34 is controlled.
  • the heating device control section 197 of the control device 90 causes the heating device 32 to perform heating. No. At this time, if the heating device 32 is heating, the heating device control unit 197 stops the heating device 32, and the transport device control unit 198 stops the transport device 33 (step S5).
  • the blower control unit 195 of the control device 90 controls the first outdoor blower 61 or The rotation speed of the second outdoor fan 62 is reduced to a preset rotation speed (step S6).
  • the controller 90 determines that the water collecting speed (kg/h) is smaller than the required humidification amount (kg/h) (NO in step S4), the first outdoor fan 61 and the second outdoor fan 62 is lowered to a preset set rotation speed, and the amount of frost formed on the first parallel heat exchanger 41 and the second parallel heat exchanger 42 is increased.
  • the outdoor fan that reduces the number of revolutions is the outdoor fan that corresponds to the parallel heat exchanger that serves as the evaporator.
  • the set rotation speed is stored in advance in the storage unit 191 of the control device 90, and the control device 90 refers to the set quantity and the set rotation speed stored in the storage unit 191 for determination.
  • the set rotational speeds of the first outdoor fan 61 and the second outdoor fan 62 are, for example, the first outdoor fan 61 and the second outdoor fan when the water collection speed (kg/h) is lower than the required humidification amount (kg/h).
  • the rotation speed is set to be a fixed reduction from the rotation speed at the start of operation of 62.
  • the set rotational speeds of the first outdoor fan 61 and the second outdoor fan 62 are controlled by the control device 90 so that the water collection speed (kg/h) and the required humidification amount (kg/h) are equal to the target value. It is more preferable to set the rotation speed based on feedback control of the set rotation speed of the first outdoor fan 61 and the second outdoor fan 62, for example, PI control or PID control.
  • the fan control unit 195 reduces the rotational speeds of the first outdoor fan 61 and the second outdoor fan 62, Lowering the evaporation temperature of the parallel heat exchanger 41 and the second parallel heat exchanger 42 is effective.
  • step S5 After stopping the heating device 32 and the conveying device 33 in step S5, the control device 90 returns to step S3 and calculates the water collecting speed (kg/h) in the water collecting device 31.
  • step S6 the control device 90 reduces the rotation speed of the first outdoor fan 61 or the second outdoor fan 62 to a preset rotation speed, and then returns to step S3 to collect water in the water collecting device 31. Calculate the water speed (kg/h).
  • step S4 If the water collection speed (kg/h) in the water collecting device 31 is the same as the calculated required humidification amount (kg/h), or if the water collection speed (kg/h) exceeds the required humidification amount (kg/h) If so (if step S4 is YES), the heating device control unit 197 drives the heating device 32 to heat and evaporate the water collected in the water collecting device 31 by the heating device 32 to generate water vapor (step S7).
  • the transport device control unit 198 drives the transport device 33, and the transport device 33 transports the water vapor generated by the heating of the heating device 32 to the humidifying device 34 (step S7).
  • the steam generated by the heating by the heating device 32 is transported by the transporting device 33 to the humidifying device 34 arranged in front of the indoor blower 63 .
  • the water vapor transported to the humidifier 34 is transported into the room by the air sent out by the indoor blower 63, and the room is humidified.
  • the control device 90 obtains the indoor humidity after a predetermined set time has elapsed (step S8).
  • the indoor humidity is the relative humidity of the indoor space detected by the indoor temperature/humidity sensor 97 .
  • Control device 90 receives the relative humidity detected by indoor temperature and humidity sensor 97 .
  • the set time is stored in advance in the storage unit 191 of the control device 90 , and the control device 90 refers to the set time stored in the storage unit 191 . Also, the elapsed time is measured by the timer 192 of the control device 90 .
  • the operating state determination unit 190 of the control device 90 compares the acquired indoor humidity with a predetermined target humidity (step S9).
  • the target humidity is stored in advance in the storage unit 191 of the control device 90, and the control device 90 refers to the target humidity stored in the storage unit 191 for determination.
  • step S9 if the operating state determination unit 190 determines that the indoor humidity is higher than "humidity 5% higher than the target humidity", or if the indoor humidity is lower than "humidity 5% lower than the target humidity" If so (NO in step S9), the process returns to step S1.
  • step S9 if the operating state determination unit 190 determines that the indoor humidity falls within the range of "5% higher humidity than the target humidity" and "5% lower humidity than the target humidity” or more (step S9 If yes), the control device 90 stops the heating device 32 (step S10). Further, in step S9, when the operating state determination unit 190 determines that the indoor humidity is in the range of "5% higher humidity than the target humidity" and "5% lower humidity than the target humidity” or more (step If S9 is YES), the control device 90 stops the conveying device 33 (step S10). In step S9, when the control device 90 determines that the indoor humidity falls within the target humidity range, the heating device 32 and the conveying device 33 are stopped, and the humidification unit 30 humidifies the indoor space. Stop.
  • the continuous heating operation is started regardless of whether frost forms on the parallel heat exchanger.
  • the blower control unit 195 of the control device 90 controls the first outdoor blower 61 and the second outdoor blower 61 so that the pressure of the refrigerant flowing into the parallel heat exchanger to be defrosted is equal to or lower than the frost point temperature in terms of the saturation temperature.
  • the air volume is controlled by adjusting the rotation speed of the outdoor blower 62 .
  • the compressor control unit 193 of the control device 90 adjusts the frequency of the compressor 1 so that the pressure of the refrigerant flowing into the parallel heat exchanger to be defrosted is equal to or lower than the frost point temperature in terms of the saturation temperature. to control.
  • the air conditioner 100 defrosts the other parallel heat exchanger.
  • the blower control unit 195 of the control device 90 reduces the rotation speed of the first outdoor blower 61 corresponding to the first parallel heat exchanger 41 to be frosted.
  • the switchgear control unit 196 also opens the first main switchgear 71 and closes the first sub switchgear 81 corresponding to the first parallel heat exchanger 41 functioning as an evaporator.
  • the switchgear control unit 196 of the control device 90 closes the second main switchgear 72 corresponding to the second parallel heat exchanger 42 to be defrosted when the continuous humidification/heating operation mode is entered. Further, the second auxiliary opening/closing device 82 is opened, and the flow rate adjusting device 7 is opened. In the air conditioner 100, the defrost circuit connecting the compressor 1, the flow regulating device 7, the second auxiliary opening/closing device 82, and the second parallel heat exchanger 42 is opened in order by these processes, and the continuous humidification/heating operation mode is entered. be started.
  • the opening/closing device control section 196 of the control device 90 further opens the first auxiliary opening/closing device 81 and the second auxiliary opening/closing device 82, and the decompression mechanism control portion 194 sets the opening degree of the flow rate adjusting device 7 in advance. Open once.
  • the blower control unit 195 of the control device 90 reduces the rotation speed of the second outdoor blower 62 corresponding to the second parallel heat exchanger 42 to be frosted.
  • the switchgear control unit 196 also opens the second main switchgear 72 and closes the second sub switchgear 82 corresponding to the second parallel heat exchanger 42 functioning as an evaporator.
  • the switchgear control unit 196 of the controller 90 closes the first main switchgear 71 corresponding to the first parallel heat exchanger 41 to be defrosted when the continuous humidification/heating operation mode is entered. Further, the first auxiliary opening/closing device 81 is opened, and the flow control device 7 is opened. In the air conditioner 100, the defrost circuit connecting the compressor 1, the flow regulating device 7, the first auxiliary opening/closing device 81, and the first parallel heat exchanger 41 is opened in order by these processes, and the continuous humidification/heating operation mode is entered. be started.
  • the opening/closing device control section 196 of the control device 90 further opens the first auxiliary opening/closing device 81 and the second auxiliary opening/closing device 82, and the decompression mechanism control portion 194 sets the opening degree of the flow rate adjusting device 7 in advance. Open once.
  • the air conditioner 100 calculates the required indoor humidification amount (kg/h) based on the indoor air temperature and indoor humidity as described above. Then, the control device 90 of the air conditioner 100 adjusts the air volume of the first outdoor fan 61 and the second outdoor fan 62 and the frequency of the compressor 1 so that the frost amount and the required humidification amount (kg/h) are balanced. properly controlled.
  • the water collected in the water collection device 31 by the operating state determination unit 190 is frozen based on the information detected by the first outdoor temperature/humidity sensor 93 and the second outdoor temperature/humidity sensor 94, such as the outdoor temperature and outdoor humidity.
  • the control device 90 may drive the heating device 32 .
  • the heating device control section 197 of the control device 90 adjusts the heating amount of the heating device 32 to melt the frozen water.
  • the actual amount of humidification is obtained from the formula of air volume x absolute humidity difference x air density.
  • the air volume can be calculated from the rotation speed of the indoor fan 63 .
  • the absolute humidity difference is obtained from the difference between the absolute humidity of air blowing from the indoor unit 20 and the absolute humidity of air sucking from the indoor unit 20 . That is, the absolute humidity difference can be calculated from the temperature/humidity value at the blowing position of the indoor unit 20 and the temperature/humidity value at the suction position acquired by the indoor temperature/humidity sensor 97 .
  • the air density is a substantially constant value and is stored in the storage unit 191 in advance.
  • the control device 90 controls the rotation speed of the indoor fan 63, the temperature and humidity detected by the indoor temperature and humidity sensor 97, and the actual humidification amount (kg/h) derived from the preset air density, and the required humidification amount (kg/h).
  • the blower controller 195 of the control device 90 controls the rotation speed of the indoor blower 63 so that the actual amount of humidification (kg/h) and the required amount of humidification (kg/h) are close to each other.
  • the air conditioner 100 obtains the difference between the required amount of humidification (kg/h) and the actual amount of humidification (kg/h) to control the rotation speed of the indoor fan 63 and bring the two values close to each other.
  • the control device 90 sets the actual humidification amount (kg/h) and the required humidification amount (kg/h) to be equal to the target value. It is desirable to perform feedback control of the indoor fan 63, for example, PI control or PID control.
  • the air conditioner 100 includes a water collecting device 31 that collects water generated from a plurality of parallel heat exchangers such as the first parallel heat exchanger 41 and the second parallel heat exchanger 42, and a heating device 32 for heating and evaporating water.
  • the air conditioner 100 also includes a conveying device 33 that conveys air containing water vapor generated by the heating device 32 to the indoor space, and a conveying device 33 that is disposed in the indoor space and contains the water vapor conveyed by the conveying device 33. and a humidifying device 34 for discharging air into the indoor space.
  • the air conditioner 100 also includes a control device 90, and the control device 90 has a continuous humidification/heating operation mode.
  • the air conditioner 100 collects moisture obtained by defrosting, vaporizes it by heating, conveys the vaporized air into the room, and humidifies the room.
  • the heating operation can be performed while constantly humidifying the room. Therefore, the air conditioner 100 can perform heating and humidification simultaneously and continuously, and can use the melted frost as humidification water to increase the responsiveness until the room is actually humidified.
  • the condensation water generated in the outdoor unit during heating is collected by natural fall without using defrost, for example, when the outside temperature is 7°C or 6°C, water will flow from the dry surface of the heat exchanger. It takes about 30 minutes for the water to drip and accumulate in the water collecting device.
  • the air conditioner 100 collects moisture obtained by defrosting, vaporizes it by heating, conveys the vaporized air into the room, humidifies the room, and thereby , the heating operation can be performed while constantly humidifying the room.
  • the air conditioner 100 can stably secure water to be used for humidification by using defrost even under frosting conditions.
  • control device 90 always defrosts a part of the plurality of parallel heat exchangers, controls the heating device 32 and the conveying device 33, and supplies the air containing water vapor from the humidifying device 34 to the indoor space. It has a continuous humidification and heating operation mode that discharges.
  • an evaporation device is required on the indoor unit 20 side, and the housing size of the humidifier 34 must be increased in order to store it in the indoor unit 20.
  • the air conditioner 100 conveys collected water not in a liquid state but in a water vapor state, an evaporation device is not required on the indoor unit 20 side.
  • the housing size can be reduced. Since the air conditioner 100 conveys the collected water not in a liquid state but in a water vapor state, it is not necessary to use a pump for conveying the liquid, and the cost can be suppressed.
  • the air conditioner 100 also has a heating device 32 that heats and evaporates the water collected in the water collecting device 31 . Since the air conditioner 100 uses the condensed water of the outdoor heat exchangers such as the first parallel heat exchanger 41 and the second parallel heat exchanger 42, for sanitary reasons, the collected water is kept at about 60°C to 80°C. must be heated to and sterilized.
  • the air conditioner 100 can humidify the indoor space by turning the water stored in the water collecting device 31 into a vapor state by the heating device 32, and can sterilize the water used for humidification.
  • the air conditioner 100 also has an indoor temperature and humidity sensor 97 that detects the indoor temperature and indoor humidity of the indoor space.
  • the operating state determination unit 190 determines the necessary humidification amount (kg/h), which is the amount of humidification required for the indoor space, based on the indoor temperature and indoor humidity detected by the indoor temperature and humidity sensor. calculate. Then, the operating state determination unit 190 calculates the required amount of humidification, which is the amount of humidification required for the indoor space calculated based on the indoor temperature and indoor humidity detected by the indoor temperature and humidity sensor 97, and collects in the water collecting device 31 and the water collection rate, which is the amount of water collected per hour.
  • the control device 90 discharges the air containing water vapor from the humidifying device 34, or stops discharging the air containing water vapor from the humidifying device 34, so that the humidifying device 34 Control the amount of humidification. Therefore, the air conditioner 100 can perform heating and humidification simultaneously and continuously, and can keep the room at a comfortable temperature and humidity.
  • the controller 90 controls the heating device 32 and the conveying device 33 is driven.
  • the water collection speed (kg/h) is the same as the required humidification amount (kg/h)
  • the evaporation amount and the water collection amount are the same, and the water collection device 31 water does not decrease from
  • the air conditioner 100 can perform heating and humidification simultaneously and continuously, and can keep the room at a comfortable temperature and humidity.
  • the control device 90 stops the heating device 32 and the conveying device 33, and the first outdoor fan 61 and the second The rotational speeds of a plurality of outdoor fans such as the two outdoor fans 62 are reduced to a preset set rotational speed.
  • the water collection speed (kg/h) is smaller than the required humidification amount (kg/h)
  • heating by the heating device 32 causes the amount of evaporation to exceed the water collection amount.
  • the control device 90 stops heating by the heating device 32, thereby allowing the air conditioner 100 to 32 can be prevented from being supplied with power more than necessary, and the water collecting device 31 can be prevented from being boiled dry. Further, by lowering the rotational speed of the outdoor fan corresponding to the parallel heat exchanger functioning as the evaporator, the amount of frost formed on the parallel heat exchanger functioning as the evaporator can be increased, and the amount of collected water can be increased.
  • the air conditioner 100 also includes a water level sensor 98 that is attached to the water collecting device 31 and measures the water level of the water collecting device 31, and the control device 90 derives the water collecting speed based on the water level detected by the water level sensor 98. Measure the amount of catchment used for Therefore, the air conditioner 100 can identify the amount of collected water with a simple means.
  • the air conditioner 100 also includes a weight sensor 99 attached to the water collecting device 31 to detect the weight of water collected in the water collecting device 31.
  • the control device 90 detects the weight of the water detected by the weight sensor 99. Measure the catchment volume used to derive the catchment rate based on Therefore, the air conditioner 100 can identify the amount of collected water with a simple means.
  • the air conditioner 100 is attached to a plurality of parallel heat exchangers, and includes outdoor temperature and humidity sensors such as a first outdoor temperature and humidity sensor 93 and a second outdoor temperature and humidity sensor 94 that detect outdoor temperature and outdoor humidity.
  • the control device 90 controls the number of rotations of a plurality of outdoor fans such as the first outdoor fan 61 and the second outdoor fan 62, and the amount of change in the absolute humidity of the air calculated based on the detection by the outdoor temperature and humidity sensor.
  • control device 90 controls the rotation speed of the indoor fan 63, the temperature and humidity detected by the indoor temperature and humidity sensor 97, and the actual humidification amount (kg / h) derived from the preset air density, and the necessary Humidification amount (kg/h) is compared.
  • the blower controller 195 of the control device 90 controls the rotation speed of the indoor blower 63 so that the actual amount of humidification (kg/h) and the required amount of humidification (kg/h) are close to each other.
  • the air conditioner 100 obtains the difference between the required humidification amount (kg/h) and the actual humidification amount (kg/h), thereby controlling the rotation speed of the indoor fan 63. Enough humidification can be ensured.
  • the heating device 32 heats and evaporates the water collected in the water collection device 31 in the continuous humidification and heating operation mode, and when the water collected in the water collection device 31 is frozen, used to dissolve water Therefore, by including the heating device 32, the air conditioner 100 can generate water vapor for humidifying the indoor space, and can prevent the water collected in the water collecting device 31 from freezing.
  • the air conditioner 100 has a transfer hose 36 that connects the water collecting device 31 and the humidification device 34 and passes air containing water vapor.
  • a drainage device 35 is provided for discharging water. Since the air conditioner 100 includes the drain device 35 , when condensed water or the like accumulates in the transfer hose 36 , the accumulated water can be discharged.
  • the configuration shown in the above embodiment shows an example of the content of the present disclosure, and can be combined with another known technology. It is also possible to omit or change the part.

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

Abstract

Un climatiseur selon la présente divulgation comprend : un circuit principal dans lequel un compresseur, un dispositif de commutation de trajet d'écoulement, un échangeur de chaleur intérieur, un dispositif de réduction de pression et une pluralité d'échangeurs de chaleur parallèles reliés en parallèle l'un à l'autre sont reliés par une tuyauterie de fluide frigorigène et dans lequel circule un fluide frigorigène ; un circuit de dérivation qui relie le côté de refoulement du compresseur et la pluralité d'échangeurs de chaleur parallèles et comprend un tuyau de dérivation à travers lequel une partie du fluide frigorigène évacué par le compresseur se ramifie et s'écoule ; un dispositif de réglage de débit qui est disposé dans le tuyau de dérivation et règle le débit du fluide frigorigène ; un ventilateur intérieur ; une pluralité de ventilateurs extérieurs ; un dispositif de collecte d'eau qui collecte l'eau générée à partir de la pluralité d'échangeurs de chaleur parallèles ; un dispositif de chauffage qui chauffe et évapore l'eau collectée dans le dispositif de collecte d'eau ; un dispositif de transport qui transporte l'air contenant de la vapeur d'eau produite par le dispositif de chauffage vers l'espace intérieur ; un dispositif d'humidification qui évacue l'air contenant de la vapeur d'eau, qui a été transporté par le dispositif de transport, vers l'espace intérieur ; et un dispositif de commande, le dispositif de commande réglant toujours certains de la pluralité d'échangeurs de chaleur parallèles en tant qu'objets de dégivrage, commandant le dispositif de chauffage et le dispositif de transport et ayant un mode de fonctionnement d'humidification et de chauffage continu dans lequel l'air contenant de la vapeur d'eau est évacué du dispositif d'humidification vers l'espace intérieur.
PCT/JP2021/022851 2021-06-16 2021-06-16 Climatiseur WO2022264308A1 (fr)

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JP2023528835A JP7422948B2 (ja) 2021-06-16 2021-06-16 空気調和機
PCT/JP2021/022851 WO2022264308A1 (fr) 2021-06-16 2021-06-16 Climatiseur

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PCT/JP2021/022851 WO2022264308A1 (fr) 2021-06-16 2021-06-16 Climatiseur

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6441782A (en) * 1987-08-07 1989-02-14 Toshiba Corp Heat pump type air conditioner
JPH07103553A (ja) * 1993-10-01 1995-04-18 Sharp Corp 空気調和機
JP2001124374A (ja) * 1999-10-29 2001-05-11 Daikin Ind Ltd 空気調和機
JP2008190789A (ja) * 2007-02-05 2008-08-21 Daikin Ind Ltd 空気調和装置
JP2010096365A (ja) * 2008-10-14 2010-04-30 Daikin Ind Ltd 空調室内機
JP2010096395A (ja) * 2008-10-15 2010-04-30 Toshiba Carrier Corp 空気調和機
CN203848419U (zh) * 2014-03-07 2014-09-24 江苏春兰制冷设备股份有限公司 一种带加湿功能的空调室外机组

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4234727A4 (fr) 2020-10-26 2023-11-15 Nippon Steel Corporation Noyau enroulé

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6441782A (en) * 1987-08-07 1989-02-14 Toshiba Corp Heat pump type air conditioner
JPH07103553A (ja) * 1993-10-01 1995-04-18 Sharp Corp 空気調和機
JP2001124374A (ja) * 1999-10-29 2001-05-11 Daikin Ind Ltd 空気調和機
JP2008190789A (ja) * 2007-02-05 2008-08-21 Daikin Ind Ltd 空気調和装置
JP2010096365A (ja) * 2008-10-14 2010-04-30 Daikin Ind Ltd 空調室内機
JP2010096395A (ja) * 2008-10-15 2010-04-30 Toshiba Carrier Corp 空気調和機
CN203848419U (zh) * 2014-03-07 2014-09-24 江苏春兰制冷设备股份有限公司 一种带加湿功能的空调室外机组

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