WO2022153386A1 - 空気調和装置 - Google Patents

空気調和装置 Download PDF

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Publication number
WO2022153386A1
WO2022153386A1 PCT/JP2021/000802 JP2021000802W WO2022153386A1 WO 2022153386 A1 WO2022153386 A1 WO 2022153386A1 JP 2021000802 W JP2021000802 W JP 2021000802W WO 2022153386 A1 WO2022153386 A1 WO 2022153386A1
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WO
WIPO (PCT)
Prior art keywords
air
area
heat exchanger
fan
control valve
Prior art date
Application number
PCT/JP2021/000802
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
芸青 范
守 濱田
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 PCT/JP2021/000802 priority Critical patent/WO2022153386A1/ja
Priority to JP2022574903A priority patent/JP7471465B2/ja
Priority to US18/251,198 priority patent/US20240271817A1/en
Publication of WO2022153386A1 publication Critical patent/WO2022153386A1/ja

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—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
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • 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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • F24F2120/12—Position of occupants

Definitions

  • the present disclosure relates to an air conditioner in which one indoor unit is provided with two heat source side circuits.
  • Patent Document 1 an air conditioner in which one indoor unit is equipped with two heat source side circuits is known.
  • Patent Document 1 two heat exchangers and two fans are housed in one housing, and the air exchanged by each heat exchanger is the respective fan. Discloses what is blown from two outlets.
  • Patent Document 1 sends out conditioned air even in a space where there are no indoor users. Therefore, the air conditioner of Patent Document 1 wastes the electric power required for air conditioner in the space where the user does not exist.
  • the present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to reduce power consumption in an air conditioner in which one indoor unit is provided with two heat source side circuits. be.
  • the air conditioner according to the present disclosure includes a housing, a first heat exchanger provided in the housing, a second heat exchanger provided in the housing, and a first heat exchanger provided in the housing.
  • a valve, a control valve, a control device for controlling a first fan, and a second fan are provided, and the housing has a first outlet and a second heat outlet that blow out air that has been heat-exchanged by the first heat exchanger.
  • the control device has a first area corresponding to the first outlet and a second outlet corresponding to the second outlet in the air-conditioned space.
  • the area is set, the presence of a person in each of the first area and the second area is detected, the presence of a person is detected in the first area, and the presence of a person is not detected in the second area, the first The control valve, the first fan, and the second fan are controlled so as to harmonize the air in the area and blow air in the second area.
  • the air conditioner of the present disclosure performs air conditioning in the first area where people exist, and blows air in the second area where no people exist. Therefore, in the second area, unnecessary air conditioning is not performed, so that power consumption is reduced. Further, the conditioned air blown out to the first area is prevented from flowing to the second area side by the air blown out to the absent area. Therefore, in the first area, air conditioning is concentrated and the temperature set by the user can be efficiently maintained, so that power consumption is reduced. As described above, according to the present disclosure, it is possible to reduce the power consumption in the air conditioner provided with two heat source side circuits in one indoor unit.
  • FIG. 1 It is a circuit diagram which shows the air conditioner 1 which concerns on Embodiment 1.
  • FIG. It is sectional drawing which shows the indoor unit 3 of the air conditioner 1 which concerns on Embodiment 1.
  • FIG. It is a figure for demonstrating the arrangement of the air-conditioning target space and the air conditioner 1 which concerns on Embodiment 1.
  • FIG. It is a functional block diagram which shows the control device 21 which concerns on Embodiment 1.
  • FIG. It is a figure for demonstrating the air-conditioning action of the air conditioning apparatus 1 which concerns on Embodiment 1.
  • FIG. It is a flowchart which shows the operation of the control device 21 which concerns on Embodiment 1.
  • FIG. It is a circuit diagram which shows the air conditioner 101 which concerns on Embodiment 2.
  • FIG. 1 It is a perspective view which shows the indoor unit 103 of the air conditioner 101 which concerns on Embodiment 2.
  • FIG. It is a figure for demonstrating the internal structure of the air conditioner 101 which concerns on Embodiment 2.
  • FIG. It is a functional block diagram which shows the control device 131 which concerns on Embodiment 2.
  • FIG. 1 is a circuit diagram showing an air conditioner 1 according to the first embodiment.
  • the air conditioner 1 has an outdoor unit 2, an indoor unit 3, and a refrigerant pipe 4.
  • the outdoor unit 2 includes a compressor 5, a flow path switching valve 6, an outdoor heat exchanger 7, an outdoor fan 8, and an expansion valve 9.
  • the indoor unit 3 has a first heat exchanger 10, a second heat exchanger 11, a first fan 12, a second fan 13, a first control valve 14, and a second control valve 15.
  • the refrigerant pipe 4 includes a compressor 5, a flow path switching valve 6, an outdoor heat exchanger 7, an expansion valve 9, a first heat exchanger 10, a second heat exchanger 11, a first control valve 14, and a second control valve. It is a pipe to which 15 is connected and a refrigerant flows inside.
  • the refrigerant circuit is composed of the refrigerant pipe 4 and each device connected to the refrigerant pipe 4.
  • the refrigerant circuit has a load side circuit of the outdoor unit 2 and a heat source side circuit branched into the first heat exchanger 10 side and the second heat exchanger 11 side of the indoor unit 3. That is, the indoor unit 3 is configured with two heat source side circuits.
  • the compressor 5 sucks in the refrigerant in a low temperature and low pressure state, compresses the sucked refrigerant into a refrigerant in a high temperature and high pressure state, and discharges the refrigerant.
  • the flow path switching valve 6 switches the flow direction of the refrigerant in the refrigerant circuit, and is, for example, a four-way valve.
  • the outdoor heat exchanger 7 exchanges heat between the refrigerant and the outdoor air, and is, for example, a fin-and-tube heat exchanger.
  • the outdoor heat exchanger 7 acts as a condenser during the cooling operation and as an evaporator during the heating operation.
  • the outdoor fan 8 is a device that sends outdoor air to the outdoor heat exchanger 7.
  • the expansion valve 9 decompresses and expands the refrigerant, and is, for example, an electronic expansion valve.
  • the first heat exchanger 10 and the second heat exchanger 11 exchange heat between the indoor air and the refrigerant as indoor heat exchangers.
  • the first heat exchanger 10 and the second heat exchanger 11 act as an evaporator during the cooling operation and as a condenser during the heating operation.
  • the first fan 12 is a device that sends indoor air to the first heat exchanger 10, and is, for example, a cross-flow fan.
  • the second fan 13 is a device that sends indoor air to the second heat exchanger 11, and is, for example, a cross-flow fan.
  • the first control valve 14 and the second control valve 15 are three-way valves having three ports (not shown).
  • the first control valve 14 and the second control valve 15 control the flow of the refrigerant to the first heat exchanger 10 and the second heat exchanger 11 by switching the open / closed state of the port.
  • the port of the first control valve 14 is connected to the flow path switching valve 6, the first heat exchanger 10, and the second heat exchanger 11.
  • the port of the second control valve 15 is connected to the expansion valve 9, the first heat exchanger 10, and the second heat exchanger 11. Further, the open / closed state of the ports of the first control valve 14 and the second control valve 15 can be set to the first mode, the second mode, and the third mode.
  • the first mode is a mode in which the refrigerant is circulated only to the first heat exchanger 10 and the refrigerant is not circulated to the second heat exchanger 11.
  • the first control valve 14 opens the port on the flow path switching valve 6 side, opens the port on the first heat exchanger 10 side, and closes the port on the second heat exchanger 11 side.
  • the second control valve 15 opens the port on the expansion valve 9 side, opens the port on the first heat exchanger 10 side, and closes the port on the second heat exchanger 11 side.
  • the second mode is a mode in which the refrigerant is not circulated to the first heat exchanger 10 and the refrigerant is circulated only to the second heat exchanger 11.
  • the first control valve 14 opens the port on the flow path switching valve 6 side, closes the port on the first heat exchanger 10 side, and opens the port on the second heat exchanger 11 side.
  • the second control valve 15 opens the port on the expansion valve 9 side, closes the port on the first heat exchanger 10 side, and opens the port on the second heat exchanger 11 side.
  • the third mode is a mode in which the refrigerant is circulated through both the first heat exchanger 10 and the second heat exchanger 11.
  • the first control valve 14 opens all ports.
  • the second control valve 15 also opens all the ports.
  • the air conditioner 1 performs a cooling operation by switching the flow path switching valve 6 so that the discharge side of the compressor 5 and the outdoor heat exchanger 7 are connected.
  • the refrigerant sucked into the compressor 5 is compressed by the compressor 5 and discharged in a high temperature and high pressure gas state.
  • the high-temperature and high-pressure gas-state refrigerant discharged from the compressor 5 passes through the flow path switching valve 6 and flows into the outdoor heat exchanger 7 that acts as a condenser.
  • the refrigerant flowing into the outdoor heat exchanger 7 exchanges heat with the outdoor air sent by the outdoor fan 8, condenses and liquefies.
  • the liquid-state refrigerant flows into the expansion valve 9 and is depressurized and expanded to become a low-temperature and low-pressure gas-liquid two-phase state refrigerant.
  • the gas-liquid two-phase state refrigerant flows into the first heat exchanger 10 that acts as an evaporator.
  • the refrigerant flowing into the first heat exchanger 10 exchanges heat with the indoor air sent by the first fan 12, evaporates, and gasifies. At that time, the indoor air is cooled and the indoor air is cooled. After that, the evaporated low-temperature and low-pressure gas-state refrigerant passes through the flow path switching valve 6 and is sucked into the compressor 5.
  • the cooling operation when the first control valve 14 and the second control valve 15 are in the second mode will be described.
  • the flow until the refrigerant discharged from the compressor 5 passes through the flow path switching valve 6, the outdoor unit 2 heat exchanger, and the expansion valve 9 is the same as in the first mode.
  • the gas-liquid two-phase state refrigerant that has passed through the expansion valve 9 flows into the second heat exchanger 11 that acts as an evaporator.
  • the refrigerant flowing into the second heat exchanger 11 exchanges heat with the indoor air sent by the second fan 13, evaporates, and gasifies. At that time, the indoor air is cooled and the indoor air is cooled. After that, the evaporated low-temperature and low-pressure gas-state refrigerant passes through the flow path switching valve 6 and is sucked into the compressor 5.
  • the cooling operation when the first control valve 14 and the second control valve 15 are in the third mode will be described. Also in this case, the flow until the refrigerant discharged from the compressor 5 passes through the flow path switching valve 6, the outdoor unit 2 heat exchanger, and the expansion valve 9 is the same as in the first mode and the second mode.
  • the gas-liquid two-phase state refrigerant that has passed through the expansion valve 9 flows into the first heat exchanger 10 and the second heat exchanger 11 that act as evaporators.
  • the refrigerant flowing into the first heat exchanger 10 exchanges heat with the indoor air sent by the first fan 12, evaporates, and gasifies.
  • the refrigerant flowing into the second heat exchanger 11 is heat-exchanged with the indoor air sent by the second fan 13 to evaporate and gasify. At that time, the indoor air is cooled and the indoor air is cooled. After that, the evaporated low-temperature and low-pressure gas-state refrigerant passes through the flow path switching valve 6 and is sucked into the compressor 5.
  • the air conditioner 1 performs a heating operation by switching the flow path switching valve 6 so that the discharge side of the compressor 5 and the first heat exchanger 10 are connected to each other.
  • the refrigerant sucked into the compressor 5 is compressed by the compressor 5 and discharged in a high-temperature and high-pressure gas state.
  • the high-temperature and high-pressure gas-state refrigerant discharged from the compressor 5 passes through the flow path switching valve 6 and flows into the first heat exchanger 10 that acts as a condenser.
  • the refrigerant flowing into the first heat exchanger 10 exchanges heat with the indoor air sent by the first fan 12, condenses and liquefies.
  • the liquid-state refrigerant flows into the expansion valve 9 and is depressurized and expanded to become a low-temperature and low-pressure gas-liquid two-phase state refrigerant.
  • the refrigerant in the gas-liquid two-phase state flows into the outdoor heat exchanger 7 that acts as an evaporator.
  • the refrigerant flowing into the outdoor heat exchanger 7 exchanges heat with the outdoor air sent by the outdoor fan 8 and evaporates to gasify. After that, the evaporated low-temperature and low-pressure gas-state refrigerant passes through the flow path switching valve 6 and is sucked into the compressor 5.
  • the heating operation when the first control valve 14 and the second control valve 15 are in the second mode will be described.
  • the refrigerant sucked into the compressor 5 is compressed by the compressor 5 and discharged in a high temperature and high pressure gas state.
  • the high-temperature and high-pressure gas-state refrigerant discharged from the compressor 5 passes through the flow path switching valve 6 and flows into the second heat exchanger 11 acting as a condenser.
  • the refrigerant that has flowed into the second heat exchanger 11 exchanges heat with the indoor air sent by the second fan 13, condenses, and liquefies.
  • the indoor air is warmed and the indoor heating is performed.
  • the flow until the liquid refrigerant that has passed through the second heat exchanger 11 passes through the expansion valve 9, the evaporator, and the outdoor heat exchanger 7 and is sucked into the compressor 5 is the same as in the first mode. Is.
  • the heating operation when the first control valve 14 and the second control valve 15 are in the third mode will be described.
  • the refrigerant sucked into the compressor 5 is compressed by the compressor 5 and discharged in a high temperature and high pressure gas state.
  • the high-temperature and high-pressure gas-state refrigerant discharged from the compressor 5 passes through the flow path switching valve 6 and flows into the first heat exchanger 10 and the second heat exchanger 11 acting as a condenser.
  • the refrigerant flowing into the first heat exchanger 10 exchanges heat with the indoor air sent by the first fan 12, condenses and liquefies.
  • the refrigerant flowing into the second heat exchanger 11 exchanges heat with the indoor air sent by the second fan 13, condenses and liquefies. At that time, the indoor air is warmed and the indoor heating is performed. After that, the flow until the liquid refrigerant that has passed through the first heat exchanger 10 and the second heat exchanger 11 passes through the expansion valve 9, the evaporator, and the outdoor heat exchanger 7 and is sucked into the compressor 5. Is the same as in the first mode and the second mode.
  • the air conditioner 1 has a control device 21, a first temperature detection device 22, a second temperature detection device 23, and an infrared sensor 24.
  • the control device 21 is based on the setting information such as the target temperature, air volume, and wind direction of the air conditioner received from the remote controller (not shown), and various information received from each part of the indoor unit 3 and the outdoor unit 2, the indoor unit 3 and the control device 21. It controls the operation of the entire air conditioner 1 including the outdoor unit 2.
  • the first temperature detection device 22 and the second temperature detection device 23 are non-contact temperature sensors that detect the temperature of the space.
  • the infrared sensor 24 is a sensor that detects infrared rays in space.
  • the first temperature detection device 22, the second temperature detection device 23, and the infrared sensor 24 are wirelessly connected so as to be able to communicate with the control device 21.
  • a detailed description of the control device 21, the first temperature detection device 22, the second temperature detection device 23, and the infrared sensor 24 will be described later.
  • FIG. 2 is a schematic cross-sectional view showing the indoor unit 3 of the air conditioner 1 according to the first embodiment.
  • the indoor unit 3 has a substantially rectangular cuboid shape as a whole.
  • the indoor unit 3 is suspended or embedded in the ceiling of the room which is the space to be air-conditioned.
  • FIG. 2 shows a cross section of the indoor unit 3 in the installed state cut in the vertical direction.
  • the indoor unit 3 has a housing 30, a first heat exchanger 10, a second heat exchanger 11, a first fan 12, and a second fan 13.
  • the housing 30 has an outer casing 31, a first inner casing 32, a second inner casing 33, a partition 34, a first wind direction plate 35, and a second wind direction plate 36.
  • the outer casing 31 constitutes the outer shell of the outdoor unit 2.
  • the outer casing 31 is formed with a first suction port 41, a second suction port 42, a first outlet 43, and a second outlet 44.
  • the first suction port 41 is formed on one side surface of the outer casing 31 and is an opening for sucking indoor air.
  • the second suction port 42 is an opening formed on the other side surface facing one side surface of the outer casing 31 to suck in the air in the room.
  • the first outlet 43 is an opening formed on the lower surface of the outer casing 31 and blows out the air heat-exchanged by the first heat exchanger 10.
  • the second outlet 44 is an opening formed on the lower surface of the outer casing 31 and blows out the air heat-exchanged by the second heat exchanger 11.
  • the second outlet 44 is formed separately from the first outlet 43.
  • the first inner casing 32 is provided inside the outer casing 31 and is located above the first fan 12.
  • the surface of the first inner casing 32 facing the first fan 12 is curved.
  • the first air passage 51 is a space surrounded by the outer casing 31 and the first inner casing 32 and communicating from the first suction port 41 to the first air outlet 43.
  • the second inner casing 33 is provided inside the outer casing 31 and is located above the second fan 13.
  • the surface of the second inner casing 33 facing the second fan 13 has a curved surface.
  • the second air passage 52 is a space surrounded by the outer casing 31 and the second inner casing 33 and communicating from the second suction port 42 to the second air outlet 44.
  • the partition 34 is provided between the first air passage 51 and the second air passage 52.
  • the partition 34 partitions the inside of the housing 30 so that the air flowing through the first air passage 51 and the second air passage 52 does not interfere with each other.
  • the partition 34 has a plate shape and has a shape substantially equivalent to the side surface of the housing
  • the first heat exchanger 10 is arranged obliquely with respect to one side surface of the first air outlet 43 formed in the first air passage 51.
  • the second heat exchanger 11 is arranged obliquely with respect to the other side surface on which the second air outlet 44 is formed in the second air passage 52.
  • the first fan 12 is installed on the downstream side of the first heat exchanger 10 in the first air passage 51.
  • the first fan 12 is, for example, a cross-flow fan, and is horizontally arranged so that the rotation axis is substantially horizontal.
  • the second fan 13 is installed on the downstream side of the second heat exchanger 11 in the second air passage 52.
  • the second fan 13 is horizontally arranged so that the rotation axis is substantially horizontal.
  • the housing 30 has a plurality of first wind direction plates 35 and a plurality of second wind direction plates 36.
  • the plurality of first wind direction plates 35 are provided so as to cover the first air outlet 43 when the air conditioner 1 is stopped.
  • the plurality of first wind direction plates 35 rotate in the vertical direction during the operation of the air conditioner 1 to adjust the direction of the air blown out from the first air outlet 43.
  • the plurality of second wind direction plates 36 are provided so as to cover the second air outlet 44 when the air conditioner 1 is stopped.
  • the plurality of second wind direction plates 36 rotate in the vertical direction during the operation of the air conditioner 1 to adjust the direction of the air blown out from the second air outlet 44.
  • the air flow in the indoor unit 3 of the air conditioner 1 will be described.
  • a case where the first control valve 14 and the second control valve 15 are in the third mode will be described as an example.
  • the air sucked from the first suction port 41 by the rotation of the first fan 12 is heat-exchanged through the first heat exchanger 10.
  • the heat-exchanged air is sent into the room from the first outlet 43.
  • the air sucked from the second suction port 42 by the rotation of the second fan 13 is heat exchanged through the second heat exchanger 11.
  • the heat-exchanged air is sent into the room from the second outlet 44. Since the indoor unit 3 sucks air from the side surface of the housing 30 and blows it downward, a short cycle is suppressed.
  • FIG. 3 is a diagram for explaining the arrangement of the air conditioning target space and the air conditioner 1 according to the first embodiment.
  • FIG. 3 schematically shows a view of the room in which the indoor unit 3 is provided, which is the space to be air-conditioned, as viewed from above.
  • the indoor unit 3 of the air conditioner is installed in the substantially center of the room.
  • the control device 21 is housed inside the housing 30 of the indoor unit 3.
  • the storage device 25 (FIG. 4) in the control device 21, a region where air is harmonized by the air blown from the first outlet 43, that is, one side surface side of the first outlet 43 formed in the air-conditioned space.
  • the setting that the area of is the first area is stored in advance.
  • a region where air is harmonized by the air blown from the second outlet 44 that is, a region on the other side surface side where the second outlet 44 is formed in the air-conditioned space is the second area.
  • the setting that there is is stored in advance. That is, when the air conditioner 1 is installed indoors, the first area and the second area in the room are determined. In FIG. 3, of the two divided areas of the room, the area A1 corresponds to the first area and the area A2 corresponds to the second area.
  • the first temperature detection device 22 is provided on the wall surface of the first area and detects the temperature of the first area.
  • the first temperature detection device 22 transmits the temperature information of the first area detected by the first temperature detection device 22 to the control device 21.
  • the second temperature detection device 23 is provided on the wall surface of the second area and detects the temperature of the second area.
  • the second temperature detection device 23 transmits the temperature information of the second area detected by the second temperature detection device 23 to the control device 21.
  • the infrared sensor 24 is provided in the housing 30 of the indoor unit 3, detects infrared rays in the entire air-conditioned space, and transmits the detection result to the control device 21.
  • the control device 21 controls the operating frequency of the compressor 5, the rotation speeds of the outdoor fan 8, the first fan 12 and the second fan 13, and the open / closed state of each port of the first control valve 14 and the second control valve 15. .
  • the control device 21 is composed of a CPU (Central Processing Unit, a central processing unit, a processing device, a computing device, a microprocessor, a microcomputer, or a processor) that executes a program stored in dedicated hardware or a storage device 25.
  • the control device 21 may be, for example, a single circuit, a composite circuit, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination thereof. Applicable.
  • Each of the functional units realized by the control device 21 may be realized by individual hardware, or each functional unit may be realized by one hardware.
  • each functional unit executed by the control device 21 is realized by software, firmware, or a combination of software and firmware.
  • the software and firmware are described as programs and stored in the storage device 25.
  • the CPU realizes each function by reading and executing the program stored in the storage device 25.
  • the storage device 25 is, for example, a non-volatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, or an EEPROM.
  • a part of the function of the control device 21 may be realized by dedicated hardware, and a part may be realized by software or firmware.
  • FIG. 4 is a functional block diagram showing the control device 21 according to the first embodiment.
  • the control device 21 has an area setting unit 61, a temperature receiving unit 62, a thermal image creating unit 63, a occupancy determination unit 64, and an air conditioning control unit 65 as functional units.
  • the area setting unit 61 stores in the storage device 25 that the first temperature detection device 22 is installed in the first area as a setting. Further, the area setting unit 61 stores in the storage device 25 that the second temperature detection device 23 is installed in the second area as a setting. That is, the area setting unit 61 sets the correspondence relationship between the first temperature detection device 22 and the first area, and the correspondence relationship between the second temperature detection device 23 and the second area.
  • the area setting by the area setting unit 61 is performed when at least one arrangement of the indoor unit 3, the first temperature detection device 22, or the second temperature detection device 23 of the air conditioner 1 is changed. The implementation timing in this case is instructed by the user or the builder by a remote controller or the like.
  • the temperature receiving unit 62 receives the temperature information of the first area from the first temperature detecting device 22. Further, the temperature receiving unit 62 receives the temperature information of the second area from the second temperature detecting device 23.
  • the thermal image creation unit 63 creates an indoor thermal image from the infrared detection result received from the infrared sensor 24.
  • the process for creating the thermal image may be a conventionally known process.
  • the occupancy determination unit 64 calculates the coordinate ranges corresponding to the first area and the second area with respect to the thermal image created by the thermal image creation unit 63, and detects a person in each coordinate range.
  • the process itself for detecting a person may be a conventionally known one.
  • the occupancy determination unit 64 sets an area in which a person is detected as an occupancy area, and determines an area in which no person is detected as an absent area.
  • the air conditioning control unit 65 When at least one of the first area and the second area is set to be an occupying area, the air conditioning control unit 65 performs air conditioning based on the setting information set by the user in the occupying area, and in the absent area. Control each device to blow air.
  • the first control valve is set so as to be the first mode in which the refrigerant is circulated only to the first heat exchanger 10. 14 and the second control valve 15 are controlled. Further, the operating frequency of the compressor 5 and the rotation speed of the outdoor fan 8 are adjusted so that the temperature of the first area becomes the temperature set by the user, and the capacity of the refrigerant distributed to the first heat exchanger 10 is adjusted. To control. Then, both the first fan 12 and the second fan 13 are operated so that the set air volume and direction are obtained, and the first wind direction plate 35 is rotated. Further, the second wind direction plate 36 is maintained at a predetermined opening degree.
  • the second control valve 15 is controlled. Further, the operating frequency of the compressor 5 and the rotation speed of the outdoor fan 8 are adjusted so that the temperature of the second area becomes the temperature set by the user, and the capacity of the refrigerant distributed to the second heat exchanger 11 is adjusted. To control. Then, both the first fan 12 and the second fan 13 are operated so that the set air volume and direction are obtained, and the second wind direction plate 36 is rotated. Further, the first wind direction plate 35 is maintained at a predetermined opening degree.
  • the first mode is set so that the refrigerant is circulated through both the first heat exchanger 10 and the second heat exchanger 11.
  • the control valve 14 and the second control valve 15 are controlled. Further, the operating frequency of the compressor 5 and the rotation speed of the outdoor fan 8 are adjusted so that the temperatures of the first area and the second area become the temperatures set by the user, and the first heat exchanger 10 and the first heat exchanger 10 and the first heat exchanger are adjusted. 2 Controls the capacity of the refrigerant flowing through the heat exchanger 11. Then, both the first fan 12 and the second fan 13 are operated so that the set air volume and direction are obtained, and the first wind direction plate 35 and the second wind direction plate 36 are rotated.
  • the air conditioning control unit 65 stops the operation of the air conditioner 1 when both the first area and the second area are absent areas.
  • FIG. 5 is a diagram for explaining the air conditioning action of the air conditioner 1 according to the first embodiment.
  • one of each of the first wind direction plate 35 and the second wind direction plate 36 is shown in an enlarged manner.
  • the case where the first area A1 is a resident area and the second area A2 is an absent area is taken as an example.
  • the opening degree of the first wind direction plate 35 is indicated by ⁇ v1 with reference to 0 ° in the closed state.
  • the opening degree of the second wind direction plate 36 is indicated by ⁇ v2 with reference to 0 ° in the closed state.
  • the air flow is indicated by an arrow.
  • the air conditioning control unit 65 rotates the first wind direction plate 35 in a range in which the opening degree ⁇ v1 is 0 ° to 90 °. That is, the first wind direction plate 35 rotates so that the direction of the blown air is toward the first area. Further, the air conditioning control unit 65 causes the second wind direction plate 36 to maintain a predetermined opening degree within the opening degree ⁇ v2 of 0 ° to 90 °. For example, in FIG. 5, the opening degree of the second wind direction plate 36 is about 80 °. That is, the second wind direction plate 36 maintains the opening degree so that the direction of the air blown from the second air outlet 44 is the direction away from the first area. As shown in FIG.
  • the conditioned air blown from the first outlet 43 to the first area is prevented from flowing to the second area side by the air blown to the absent area.
  • air conditioning is centrally performed in the first area, which is the occupancy area, and the temperature set by the user can be efficiently maintained.
  • FIG. 6 is a flowchart showing the operation of the control device 21 according to the first embodiment.
  • the thermal image creation unit 63 creates a thermal image of the room from the infrared sensor 24 (S1).
  • the occupancy determination unit 64 detects a person in each area and sets the occupancy area and the absent area (S2).
  • the air-conditioning control unit 65 determines whether or not each of the first area and the second area of the air-conditioning target space is a resident area (S3).
  • the air conditioning control unit 65 controls each device so as to perform air conditioning in the occupancy area and blow air in the absent area (S4).
  • the air-conditioning control unit 65 stops the operation of the air conditioner 1 (S5).
  • the above processing is repeatedly executed at a predetermined cycle during the operation of the air conditioner 1.
  • the air conditioner 1 performs air conditioning in the first area where a person exists, and blows air in the second area where no person exists. Therefore, in the second area, unnecessary temperature control is not performed, so that power consumption is reduced. Further, the conditioned air blown out to the first area is prevented from flowing to the second area side by the air blown out to the absent area. Therefore, in the first area, air conditioning is concentrated and the temperature set by the user can be efficiently maintained, so that power consumption is reduced. As described above, according to the first embodiment, it is possible to reduce the power consumption in the air conditioner 1 provided with two heat source side circuits in one indoor unit 3.
  • the housing 30 has a partition 34 provided between the first air passage 51 and the second air passage 52. Therefore, the air flowing through the first air passage 51 and the second air passage 52 does not interfere with each other, and it is possible to prevent the momentum of the air blown out from the first air outlet 43 and the second air outlet 44 from decreasing. can do.
  • the first outlet 43 and the second outlet 44 are formed on the lower surface of the housing 30. Therefore, the air conditioning device 1 can have a wider area for air conditioning as compared with the case where the first outlet 43 and the second outlet 44 are formed on the side surface of the housing 30. It is possible to improve the comfort of the user.
  • FIG. 7 is a circuit diagram showing the air conditioner 101 according to the second embodiment. As shown in FIG. 7, the second embodiment is different from the first embodiment in that the indoor unit 103 includes four heat source side circuits.
  • the same parts as those in the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.
  • the indoor unit 103 of the air conditioner 101 has a first heat exchanger 111, a second heat exchanger 112, a third heat exchanger 113, and a fourth heat exchanger 114 as indoor heat exchangers. have.
  • the heat source side circuit branched to is connected. That is, the indoor unit 103 is provided with four heat source side circuits.
  • the indoor unit 103 has a first fan 115, a second fan 116, a third fan 117, and a fourth fan 118.
  • the first fan 115 is a device that sends air to the first heat exchanger 111.
  • the second fan 116 is a device that sends air to the second heat exchanger 112.
  • the third fan 117 is a device that sends air to the third heat exchanger 113.
  • the fourth fan 118 is a device that sends air to the fourth heat exchanger 114.
  • the indoor unit 103 has a first control valve 121, a second control valve 122, a third control valve 123, a fourth control valve 124, a fifth control valve 125, and a sixth control valve 126.
  • the first control valve 121, the second control valve 122, the third control valve 123, the fourth control valve 124, the fifth control valve 125, and the sixth control valve 126 are three-way valves.
  • the first heat exchanger depends on the combination of the open / closed states of the ports of the first control valve 121, the second control valve 122, the third control valve 123, the fourth control valve 124, the fifth control valve 125, and the sixth control valve 126.
  • the flow of the refrigerant to 111, the second heat exchanger 112, the third heat exchanger 113, and the fourth heat exchanger 114 is controlled.
  • the port of the first control valve 121 is connected to the flow path switching valve 6, the first heat exchanger 111, and the third control valve 123.
  • the port of the second control valve 122 is connected to the expansion valve 9, the first heat exchanger 111, and the fourth control valve 124.
  • the port of the third control valve 123 is connected to the second heat exchanger 112, the first control valve 121, and the fifth control valve 125.
  • the port of the fourth control valve 124 is connected to the second heat exchanger 112, the second control valve 122, and the sixth control valve 126.
  • the port of the fifth control valve 125 is connected to the third heat exchanger 113, the fourth heat exchanger 114, and the third control valve 123.
  • the port of the sixth control valve 126 is connected to the third heat exchanger 113, the fourth heat exchanger 114, and the fourth control valve 124.
  • FIG. 8 is a perspective view showing the indoor unit 103 of the air conditioner 101 according to the second embodiment.
  • the housing 140 of the indoor unit 103 has a flat cylindrical shape.
  • a first suction port 161, a second suction port 162, a third suction port (not shown), and a fourth suction port (not shown) are formed on the side surface of the housing 140 of the indoor unit 103.
  • a first outlet 165, a second outlet 166, a third outlet 167, and a fourth outlet 168 are formed on the lower surface of the housing 140 of the indoor unit 103.
  • a region where air is harmonized by the air blown from the first outlet 165 that is, an region corresponding to the first outlet 165 in the air-conditioned space is the first area.
  • the setting that is is stored in advance.
  • the storage device 25 is set in advance that the region where the air is harmonized by the air blown from the second outlet 166, that is, the region corresponding to the second outlet 166 in the air-conditioned space is the second area. It is remembered.
  • the storage device 25 is set in advance that the region where the air is harmonized by the air blown from the third outlet 167, that is, the region corresponding to the third outlet 167 in the air-conditioned space is the third area. It is remembered.
  • the storage device 25 is set in advance that the region where the air is harmonized by the air blown from the fourth outlet 168, that is, the region corresponding to the fourth outlet 168 in the air-conditioned space is the fourth area. It is remembered.
  • the indoor unit 103 of the air conditioner 101 has a first temperature detection device 132, a second temperature detection device 133, a third temperature detection device 134, a fourth temperature detection device 135, and an infrared sensor 24.
  • the first temperature detection device 132 detects the temperature in the first area and transmits the temperature information to the control device 131.
  • the second temperature detection device 133 detects the temperature in the second area and transmits the temperature information to the control device 131.
  • the third temperature detection device 134 detects the temperature in the third area and transmits the temperature information to the control device 131.
  • the fourth temperature detection device 135 detects the temperature in the fourth area and transmits the temperature information to the control device 131.
  • the infrared sensor 24 detects infrared rays in the entire air-conditioned space.
  • FIG. 9 is a diagram for explaining the internal configuration of the air conditioner 101 according to the second embodiment.
  • FIG. 9 shows only the portion where the first outlet 165 of the indoor unit 103 is formed.
  • the space surrounded by the housing 140 and communicating from the first suction port 161 to the first outlet 165 is the first air passage 171.
  • the first air passage 171 will be described as an example, but the configurations of the second air passage (not shown), the third air passage (not shown), and the fourth air passage (not shown) are also the first. It is the same as 1 air passage 171.
  • the first suction port 161 is formed on the side surface of the housing 140.
  • the first outlet 165 is formed on the lower surface of the outer casing 31.
  • the first fan 115 is, for example, a cross-flow fan, and is placed horizontally with respect to the housing 140 so that the rotation axis is substantially horizontal. Further, the housing 140 has four partitions 141. The four partitions 141 partition the inside of the housing 140 so that the air flowing through each of the first air passage 171 and the second air passage, the third air passage, and the fourth air passage does not interfere with each other.
  • FIG. 10 is a functional block diagram showing the control device 131 according to the second embodiment.
  • Each functional unit of the control device 131 is common to the first embodiment except that it corresponds to four areas of the first area, the second area, the third area, and the fourth area. That is, the area setting unit 181 sets the correspondence between the first temperature detection device 132, the second temperature detection device 133, the third temperature detection device 134, and the fourth temperature detection device 135 and each area.
  • the temperature receiving unit 182 is a first area, a second area, a third area, and a fourth from the first temperature detecting device 132, the second temperature detecting device 133, the third temperature detecting device 134, and the fourth temperature detecting device 135. Get area temperature information.
  • the thermal image creation unit 183 creates a thermal image of the entire air-conditioned space.
  • the occupancy determination unit 184 determines the occupancy area and the absence area for the first area, the second area, the third area, and the fourth area from the detection result of the infrared rays received from the infrared sensor 24. Then, when at least one of the first area, the second area, the third area, and the fourth area is set to be the occupancy area, the air conditioning control unit 185 performs air harmonization in the occupancy area and absent area. Now, control each device so that it blows air.
  • the first control valve 121 opens the port on the flow path switching valve 6 side.
  • the port on the first heat exchanger 111 side is opened, and the port on the third control valve 123 side is closed.
  • the second control valve 122 opens the port on the expansion valve 9 side, opens the port on the first heat exchanger 111 side, and closes the port on the fourth control valve 124 side.
  • the third control valve 123, the fourth control valve 124, the fifth control valve 125, and the sixth control valve 126 close all the ports.
  • the operating frequency of the compressor 5 and the rotation speed of the outdoor fan 8 are adjusted to control the capacity of the refrigerant flowing through the first heat exchanger 111. Then, the first fan 115, the second fan 116, the third fan 117, and the fourth fan 118 are operated so as to have the set air volume and direction, and the first wind direction plate 151 is rotated. Further, the second wind direction plate 152, the third wind direction plate 153, and the fourth wind direction plate 154 are made to maintain a predetermined opening degree. As a result, the refrigerant flows only to the first heat exchanger 111 side, and air conditioning is performed only in the first area. Further, ventilation is performed in the second area, the third area, and the fourth area.
  • the refrigerant flows only to the indoor heat exchanger corresponding to the occupying area and the set area, and the indoor heat exchange corresponding to the absent area and the set area.
  • Each control valve is controlled so that the flow of the refrigerant is cut off in the vessel.
  • the air conditioner 101 divides the room into four areas, performs air conditioning based on the setting information set by the user in the occupying area, and blows air in the absent area. .. Therefore, the air conditioning device 101 of the second embodiment can further limit the area where the air conditioning is concentrated in the air-conditioned space as compared with the air conditioning device 101 of the first embodiment. Therefore, according to the second embodiment, the power consumption in the air conditioner 101 provided with the heat source side circuits of a plurality of systems in one housing 140 can be further reduced.
  • the present disclosure is not limited to the above-described embodiment, and can be variously modified without departing from the gist of the present disclosure.
  • the first control valve 14 and the second control valve 15 are three-way valves, but by combining a four-way valve or a two-way valve, they may have the same function. good.
  • the installation location and the number of the first temperature detection device 22 and the second temperature detection device 23 in the first embodiment may be changed as long as the temperature of each area can be detected individually.
  • the first temperature detection device 22 and the second temperature detection device 23 may be provided in the housing 30 of the indoor unit 3.
  • the temperature in the room may be detected by a thermal image created based on the infrared rays detected by the infrared sensor 24.
  • a mobile terminal such as a smartphone or a device such as a PC possessed by the user is wirelessly connected so that the control device 21 can communicate with the control device 21, and the temperature detected by the mobile terminal or the PC or the like is acquired. May be good.
  • the first temperature detection device 22 and the second temperature detection device 23 can be omitted.
  • the infrared sensor 24 in the first embodiment may not only acquire infrared rays in the air-conditioned space, but may also have a function of creating a thermal image.
  • the thermal image creation unit 63 of the control device 21 may be omitted.
  • the occupancy determination unit 64 in the first embodiment determines the occupancy area and the absent area based on the presence / absence or intensity of the signal received from a device such as a mobile terminal or a PC instead of the thermal image. You may. In this case, the infrared sensor 24 can be omitted.
  • wireless communication may be performed in a certain section and wired communication may be performed in another section. Further, communication from one device to another device may be performed by wired communication, and communication from another device to a certain device may be performed by wireless communication.
  • the execution timing of the area setting of the area setting unit 61 is instructed by the user or the builder by a remote controller or the like.
  • the relative positional relationship with the first temperature detection device 22 or the second temperature detection device 23 is determined from the change in the intensity of the signal received from the first temperature detection device 22 and the second temperature detection device 23.
  • the area setting unit 61 may be automatically implemented by detecting the change.
  • the operation of the air conditioner 1 is stopped, but the air may be blown in all the areas.
  • the shape of the housing 30 and the arrangement of the suction port and the air outlet may be appropriately changed from the configuration disclosed as the embodiment.
  • the first suction port 41 and the second suction port 42 may be formed on the lower surface of the housing 30, and the first outlet 43 and the second outlet 44 may be formed on the side surface of the housing 30.
  • the air volume in the absent area is set as the air volume set by the user, but the air volume in the absent area may be larger than the air volume in the absent area. In this case, it is possible to more reliably suppress the conditioned air blown out to the absent area from flowing to the absent area side by the air blown out to the absent area.
  • the opening degree ⁇ v2 of the second wind direction plate 36 in the absent area was about 80 °, but the opening degree ⁇ v2 is maintained in any of the ranges of 0 ° to 90 °. 2
  • the air blown out from the outlet 44 may be oriented away from the first area. For example, by setting the opening degree ⁇ v2 to 90 °, the air blown out from the second outlet 44 goes directly below the air conditioner 1. In this case, the air blown out from the second outlet 44 is unlikely to be attenuated by the time it comes into contact with the air blown out from the first outlet 43, so that the air flows from the first area to the second area. Can be further suppressed.
  • the wind direction plate in the living area is controlled to be rotated, but a predetermined opening degree may be maintained. Further, if each wind direction plate is provided so that the direction of the air blown from the corresponding air outlet is such that the direction is away from the area other than the corresponding area, the direction is fixed to the housing and the rotation is performed. The function to operate may be omitted.
  • each control valve in the open / closed state of each control valve, the refrigerant circulates only in the indoor heat exchanger corresponding to the area determined to be the absent area, and the refrigerant flows to the indoor heat exchanger corresponding to the area determined to be absent. If the distribution is interrupted, the present invention is not limited to those disclosed in the first and second embodiments. Further, in the first and second embodiments, the refrigerant circulates only in the indoor heat exchanger corresponding to the area determined to be the absent area, and the refrigerant flows to the indoor heat exchanger corresponding to the area determined to be the absent area. If the distribution is interrupted, a part of the control valve may be omitted.

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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)
  • Fluid Mechanics (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)
PCT/JP2021/000802 2021-01-13 2021-01-13 空気調和装置 WO2022153386A1 (ja)

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