WO2020262300A1 - Unité intérieure de climatiseur et climatiseur - Google Patents

Unité intérieure de climatiseur et climatiseur Download PDF

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Publication number
WO2020262300A1
WO2020262300A1 PCT/JP2020/024404 JP2020024404W WO2020262300A1 WO 2020262300 A1 WO2020262300 A1 WO 2020262300A1 JP 2020024404 W JP2020024404 W JP 2020024404W WO 2020262300 A1 WO2020262300 A1 WO 2020262300A1
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WO
WIPO (PCT)
Prior art keywords
air
indoor
fan
air supply
room
Prior art date
Application number
PCT/JP2020/024404
Other languages
English (en)
Japanese (ja)
Inventor
竹中　啓
隼人 布
智彦 堤
陽介 駒井
Original Assignee
ダイキン工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Priority to CN202080046595.8A priority Critical patent/CN114051574A/zh
Publication of WO2020262300A1 publication Critical patent/WO2020262300A1/fr

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Classifications

    • 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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025—Cross-flow or tangential fans
    • 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
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • 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
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • 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
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/70—Carbon dioxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • an air conditioner having a gas sensor for measuring the gas concentration of carbon dioxide in a room and ventilating the room when the gas concentration of carbon dioxide exceeds a certain level is known (for example, Patent Document 1). (See JP-A-2005-221107).
  • the position of the user and the position of the indoor unit may be separated. In such a case, if the air in the room is not sufficiently agitated, there is a risk that the user will not be sufficiently supplied with fresh air even if the air is supplied.
  • the indoor unit of the air conditioner of the first aspect includes a casing, an indoor fan, a control unit, an air supply path, and a gas sensor.
  • the indoor fan is located inside the casing and blows out air-conditioned air.
  • the control unit controls the indoor fan.
  • the gas sensor measures the gas concentration in the room.
  • the control unit rotates the indoor fan when the outside air is introduced into the room by using the air supply path.
  • the indoor fan when the outside air is introduced into the room using the air supply path, the indoor fan is rotating, so that the supplied air is surely provided to the user by the user. Can be done.
  • the indoor unit of the air conditioner of the second viewpoint is the indoor unit of the first viewpoint, and the control unit is when the indoor fan is rotating and the outside air is introduced into the room by using the air supply path. , Even when the condition for stopping the indoor fan, which is not related to the measurement of the gas concentration, is satisfied, the rotation of the indoor fan is continued.
  • the air supplied is supplied because the rotation of the indoor fan is continued even when the condition for stopping the indoor fan not related to the measurement of the gas concentration is satisfied during air supply. Can be reliably provided by the user.
  • the indoor unit of the air conditioner of the third viewpoint is the indoor unit of the first viewpoint, and the control unit is indoors under the condition of stopping the first fan when the outside air is not introduced into the room by using the air supply path. Stop the fan.
  • the first fan stop condition is a condition for stopping the indoor fan based on the environmental information.
  • the control unit stops the indoor fan under the condition of stopping the second fan.
  • the second fan stop condition is a condition relaxed from the first fan stop condition based on the same environmental information.
  • the more relaxed condition means a condition in which the fan is less likely to stop.
  • the indoor unit of the air conditioner of the third viewpoint stops the fan under more relaxed conditions during air supply, so that the supplied air can be reliably provided by the user.
  • the indoor unit of the air conditioner of the fourth viewpoint is the indoor unit of the first viewpoint, and the control unit thermo-offs when the indoor fan is rotating and the outside air is introduced into the room by using the air supply path. Even when the operating conditions are met, the indoor fan continues to rotate.
  • the rotation of the indoor fan is continued even when the thermo-off operating condition is satisfied, so that the supplied air can be reliably provided by the user. it can.
  • the indoor unit of the air conditioner of the fifth viewpoint is the indoor unit of the fourth viewpoint, and the control unit is thermo-off when the indoor fan is rotating and the outside air is introduced into the room by using the air supply path.
  • the temperature at which the operating conditions are satisfied is set lower during the cooling operation and higher during the heating operation than when the outside air is not introduced.
  • the temperature at which the thermo-off operation condition is satisfied during air supply is set lower during cooling operation and higher during heating operation than when outside air is not introduced. Therefore, it is difficult for the thermostat to turn off, and the rotation of the indoor fan is continued, so that the supplied air can be reliably provided to the user.
  • the indoor unit of the air conditioner of the sixth aspect is the indoor unit of the first aspect, and the control unit satisfies the air supply condition for introducing the outside air into the room using the air supply path while the indoor fan is stopped. At that time, the indoor fan is rotated and the outside air is supplied.
  • the indoor unit of the air conditioner of the sixth aspect rotates the indoor fan during air supply, the supplied air can be reliably provided by the user.
  • the indoor unit of the air conditioner of the 7th viewpoint is any of the indoor units of the 1st to 6th viewpoints, and the rotation speed of the indoor fan when rotating the indoor fan is 1/2 of the maximum rotation speed. It is as follows.
  • the indoor unit of the air conditioner of the eighth aspect is any of the indoor units of the first to seventh aspects, and the predetermined gas is CO 2 gas.
  • the predetermined gas is CO 2 gas
  • the CO 2 gas concentration can be reduced by introducing the outside air into the room.
  • FIG. 1 It is a figure which arranged the air conditioner 1 of 1st Embodiment in a room. It is an external view of the air conditioner 1 of 1st Embodiment. It is a figure which shows the refrigerant circuit 2 and the air supply path 3 of the air conditioner 1 of 1st Embodiment. It is a front view of the indoor unit 10 of 1st Embodiment. It is a side view of the indoor unit 10 of 1st Embodiment. It is a figure which looked at the room unit 10 of 1st Embodiment from the side surface and a little below. It is a figure which shows the air supply pipe 19 in the casing 11 of 1st Embodiment.
  • the air conditioner 1 of the present embodiment includes the indoor unit 10, the outdoor unit 20, the refrigerant pipes 2a and 2b, and the air supply pipe 35 that connect the indoor unit 10 and the outdoor unit 20.
  • the indoor unit 10 has an indoor heat exchanger 14, an indoor expansion valve 17, and an indoor fan 12, as shown in FIGS. 1, 2, 3A to 3C.
  • the indoor unit 10 is arranged indoors.
  • the outdoor unit 20 has an outdoor refrigerant circuit unit 6 and an air supply unit 5.
  • the outdoor unit 20 is arranged outdoors, usually outdoors.
  • the outdoor refrigerant circuit unit 6 has a compressor 21, an accumulator 22, a four-way switching valve 23, an outdoor heat exchanger 24, an outdoor heat exchanger fan 26, an outdoor expansion valve 25, and a pipe connecting them.
  • the air supply path 3 has an air supply unit 5 of the outdoor unit 20, an air supply pipe 35 connecting the outdoor unit 20 and the indoor unit 10, an air supply pipe 19 in the indoor unit 10, and air supply paths P0 and P1.
  • the air supply unit 5 of the outdoor unit has an intake port 32, an air supply fan 31, and an air supply pipe 33 in the outdoor unit 20.
  • the air conditioner 1 of the present embodiment can perform air conditioning such as cooling, heating, dehumidification, and air supply in the room where the indoor unit 10 is arranged.
  • the cooling operation and the heating operation are realized by using the refrigerant circuit 2.
  • Switching between cooling operation and heating operation is realized by switching the direction of the refrigerant flow in the four-way switching valve 23.
  • the refrigerant discharged from the compressor 21 flows in the order of the four-way switching valve 23, the outdoor heat exchanger 24, the outdoor expansion valve 25, the indoor heat exchanger 14, the four-way switching valve 23, and the accumulator 22. It is sucked into 21 again.
  • the outdoor heat exchanger 24 functions as a radiator to heat the outside air
  • the indoor heat exchanger 14 functions as an evaporator to cool the indoor air.
  • the refrigerant discharged from the compressor 21 flows in the order of the four-way switching valve 23, the indoor heat exchanger 14, the outdoor expansion valve 25, the outdoor heat exchanger 24, the four-way switching valve 23, and the accumulator 22, and the compressor. It is sucked into 21 again.
  • the indoor heat exchanger 14 functions as a radiator to heat the indoor air
  • the outdoor heat exchanger 24 functions as an evaporator to cool the outside air.
  • the air supply operation is carried out using the air supply route 3.
  • the air supply fan 31 rotates, the outside air is taken into the outdoor unit 20 from the intake port 32 of the air supply unit 5 of the outdoor unit 20.
  • the outside air taken into the outdoor unit 20 flows through the air supply pipe 33, the air supply fan 31, and the air supply pipe 33 of the outdoor unit 20. Further, the outside air flows through the air supply pipe 35 connecting the outdoor unit 20 and the indoor unit 10 and enters the inside of the indoor unit 10.
  • the outside air flows from the inside of the indoor unit 10 into the room outside the indoor unit 10.
  • FIG. 3A The front view of the indoor unit 10 with the front panel 42 removed is shown in FIG. 3A, the left side view is shown in FIG. 3B, and the left side view is shown in FIG. 3C from slightly below.
  • the indoor unit 10 has a casing 11, an indoor fan 12, a gas sensor 15, a control unit 16, an indoor heat exchanger 14, a flap 18, an indoor air supply pipe 19, and air supply paths P0 and P1.
  • the casing 11 is arranged, and the indoor fan 12, the gas sensor 15, the control unit 16, the indoor heat exchanger 14, and the indoor air supply pipe 19 are housed inside the casing.
  • the flap 18 is attached to the lower part of the casing 11.
  • the rear surface of the casing 11 is hung on the indoor wall.
  • Refrigerant pipes 2a, 2b, air supply pipes 35, and the like are connected from the rear surface of the casing 11, pass through the wall, and are connected to an outdoor unit arranged outdoors.
  • Indoor fan 12 indoor heat exchanger 14 As shown in FIG. 3B, the indoor fan 12 is arranged in the center of the casing 11. The indoor fan 12 is a cross flow fan. In FIG. 3B, the indoor fan 12 rotates clockwise to move the air in the clockwise direction.
  • the indoor heat exchanger 14 is arranged in the space outside the indoor fan 12 inside the casing 11.
  • the indoor air is taken into the inside of the casing 11 from the suction port 41 at the upper part of the casing 11, passes through the indoor heat exchanger 14 to exchange heat, and the flap 18a at the lower part of the casing 11 It is blown into the room from the portion 18b.
  • Flap 18 The flap 18 is attached below the casing 11.
  • the flaps 18a and 18b are composed of two flaps.
  • the flap 18 is normally closed when the air conditioner 1 is stopped, as shown in FIG. 3C.
  • the flaps 18a and 18b are opened, and air is blown out from between the flaps 18a and 18b, between the casing 11 and the flap 18a, and the like. ..
  • the flaps 18a and 18b change the angle of the blown air by changing the angle of the opening degree thereof. Thereby, it is possible to control whether the direction of the blown air is blown forward of the indoor unit 10, vertically downward, or in the middle direction.
  • the two flaps 18a and 18b are usually controlled in substantially the same direction and at substantially the same angle so as to guide the blown air in the same direction.
  • the opening degrees of the flaps 18a and 18b can be changed up to 120 degrees with the fully closed state of FIG. 3C as 0 degree.
  • the closing of a flap includes not only the case of 0 degree, but also the case of substantially no air blowing and the case of an angle of 5 degrees or less.
  • the air supply pipe 19 has the shape shown in FIG. 4.
  • One end of the air supply pipe 19 is a connection port 19b.
  • the connection port 19b is connected to an air supply pipe 35 that connects the outdoor unit 20 and the indoor unit 10.
  • the other end of the air supply pipe 19 is an air outlet 19a.
  • the air outlet 19a is arranged on the left side of the indoor unit 10 and is arranged so as to face the indoor heat exchanger 14.
  • the central portion between the connection port 19b and the air outlet 19a of the air supply pipe 19 has a flat shape and is arranged on the left side surface of the indoor unit 10.
  • the outside air is taken in by the outdoor unit 20 and enters the indoor unit 10 via the air supply pipe 35.
  • the air flowing through the air supply pipe 19 of the indoor unit 10 is blown out from the outlet 19a in the direction of the indoor heat exchanger 14.
  • the outside air blown out from the outlet 19a joins the air taken in from the suction port 41 and is blown out into the room from the vicinity of the flaps 18a and 18b.
  • the air supply path P0 when the fan 12 is rotating joins the air sucked from the suction port 41 from the middle.
  • the air supply path P0 in this case does not pass through the gas sensor 15.
  • the outside air supply path P1 blown out from the outlet 19a spreads into the internal space of the casing 11, and the outside air is discharged into the room through the holes of the casing 11 such as the suction port 41. Will be done.
  • the air supply path P1 mainly extends between the outlet 19a and the fan 12. A part of the air supply path P1 reaches the gas sensor 15 as shown by the arrow A1 in FIG. 3A.
  • the air supply fan 31 When supplying air, rotate the air supply fan 31 of the outdoor unit 20.
  • the air supply fan 31 may be arranged at another location in the air supply path 3. For example, it may be arranged in the indoor unit 10.
  • the indoor unit 10 of the air conditioner 1 of the present embodiment includes a gas sensor 15.
  • the gas sensor 15 is a carbon dioxide (CO 2 ) gas sensor. Since the air conditioner 1 of the present embodiment includes the CO 2 gas sensor 15, when the CO 2 gas concentration in the room is high, the outside air is taken into the room by using the air supply path 3 and the CO 2 in the room is taken in. Measures such as reducing the gas concentration can be taken.
  • the gas sensor 15 is an optical gas sensor.
  • the gas sensor 15 has a light emitting unit and a light receiving unit.
  • the light emitting unit includes a light source that emits infrared light.
  • the light receiving unit has a detector and a filter.
  • the principle of the gas sensor is the non-dispersed infrared absorption method.
  • the amount of gas is specified by absorbing light with a frequency (wavelength) peculiar to gas molecules by resonance of molecular energy due to interatomic vibration.
  • the gas sensor may be a self-heating thermistor type.
  • the gas sensor 15 is arranged inside the casing 11, near the front surface, at the right end, and above.
  • the position of the gas sensor 15 is in the air supply path P1 when the indoor fan 12 is stopped.
  • the gas sensor 15 measures the gas concentration at the place where the gas sensor 15 is arranged. In other words, the gas concentration in the casing 11 is detected. Therefore, when air is not supplied, the gas concentration in the room is measured.
  • the gas concentration detected by the gas sensor 15 differs depending on whether the indoor fan 12 is rotating or not.
  • the gas sensor 15 measures the gas concentration in the room.
  • the gas sensor 15 measures the gas concentration of the outside air.
  • the rotation speed of the indoor fan 12 during air supply may be low.
  • the air volume may be lower than the minimum air volume that can be set by the user.
  • the rotation speed of the indoor fan 12 is 1/2 or less of the maximum rotation speed. It may be 1/3 or less of the maximum rotation speed.
  • Control unit 16 The control unit 16 is a microprocessor.
  • the control unit 16 includes a CPU and a storage unit.
  • FIG. 7 shows a block diagram showing a schematic configuration of control of the control unit 16.
  • the control unit 16 controls the heating operation, the cooling operation, and the air supply operation by the air conditioner 1.
  • the control unit 16 controls the indoor fan 12, the four-way switching valve 23, the compressor 21, the outdoor heat exchanger fan 26, the outdoor expansion valve 25, the air supply fan 31, the indoor expansion valve 17, and the gas sensor 15.
  • the control unit 16 is arranged at the right end portion inside the casing 11.
  • the control unit 16 may be arranged at another position.
  • the measured value of the concentration of the predetermined gas (CO 2 gas) measured by the gas sensor 15 at time t1 is the first threshold C1.
  • the first threshold value C1 is a concentration at which the air conditioner 1 starts supplying air when the gas concentration of a predetermined gas in the room exceeds that value.
  • the outdoor CO 2 gas concentration is about 410 ppm (measured in Japan in 2018), for example, the first threshold C1 is 2000 ppm.
  • the control unit 16 rotates the air supply fan 31 to start air supply (time t1, S102). At this time, since the air conditioner 1 is in operation, the indoor fan 12 is rotating. As the outside air is introduced, the CO 2 gas concentration in the room decreases, and the measured value of the gas sensor 15 also decreases.
  • the thermo-off operation condition is a condition for stopping the cooling operation such as stopping the indoor fan when the actual room temperature falls below or approaches the temperature set by the user during cooling. Normally, when the thermo-off operation condition is satisfied, the indoor fan 12 is stopped.
  • the gas sensor 15 measures the gas concentration of the outdoor air, and as shown by the solid line in FIG. 5, the gas concentration rapidly decreases, and the gas concentration of the outside air. It drops to near C0. Since the gas concentration C0 is below the second threshold value C2 at which the supply of air is terminated, the control unit 16 stops the supply of air.
  • the gas sensor 15 can continuously measure the CO 2 gas concentration of the indoor air, and can sufficiently take in the outside air.
  • the control unit 16 stops the rotation of the air supply fan 31.
  • the indoor unit 10 of the air conditioner 1 of the present embodiment includes an indoor fan 12, a control unit 16, an air supply path P0, and a gas sensor 15.
  • the control unit 16 controls the indoor fan 12.
  • the air supply path P0 is a path for introducing outside air into the room when the indoor fan 12 rotates.
  • the gas sensor 15 measures the CO 2 gas concentration.
  • control unit 16 does not stop the rotation of the indoor fan 12 even if the thermo-off operation condition is satisfied while the outside air is being supplied.
  • the gas sensor 15 will read the gas concentration of the outside air, and the control unit 16 will not be sufficiently supplied with air, and the CO 2 gas concentration in the room will not be sufficiently lowered. However, there is a risk of stopping the air supply.
  • the air conditioner 1 of the present embodiment is usually arranged at a relatively high position on the wall surface of the room. Therefore, for example, if this room is a bedroom, when the user is sleeping on the bed 50, the position of the user's breathing mouth and the indoor unit of the air conditioner 1 are separated from each other.
  • the control unit 16 is the indoor fan 12 even if the thermo-off operation condition is satisfied while the outside air is being supplied. Do not stop the rotation. When the indoor fan 12 is stopped, the agitation of the indoor air becomes insufficient, and the introduced fresh outside air may not be sufficiently supplied to the user. In the indoor unit 10 of the air conditioner 1 of the present embodiment, since the indoor fan 12 continues to rotate, it is possible to sufficiently supply the user with fresh outside air.
  • the control unit 16 does not stop the indoor fan 12 in this case as well. In this case as well, the same effects as in (4-1) and (4-2) are produced.
  • thermo-off operation condition is changed between when air is being supplied and when air is not being supplied.
  • first thermo-off operating condition the thermo-off operating condition when air is not being supplied
  • second thermo-off operating condition the thermo-off operating condition during air supply
  • the second thermo-off operating condition is more relaxed than the first thermo-off operating condition. In other words, the second thermo-off operating condition is less likely to be established.
  • the second thermo-off operating condition is that the room temperature is the user-set temperature. It is established when the temperature reaches -2 ° C.
  • thermo-off operating condition is less likely to be established during air supply than when air is not being supplied. Therefore, it is unlikely that the rotation of the indoor fan 12 is stopped during air supply, the gas concentration is correctly evaluated by the gas sensor 15, and air supply is performed more appropriately.
  • the condition for stopping the fan 12 was the thermo-off operation condition.
  • the condition for stopping the fan may be a condition other than the thermo-off operation condition.
  • the modified example 1C can be explained as follows.
  • the stop condition of the indoor fan 12 in the environmental condition when the air is not supplied is called the first fan stop condition.
  • the fan stop condition under the same environmental conditions during air supply is called a second fan stop condition.
  • the second fan stop condition is relaxed as compared with the first fan stop condition. In other words, the second fan stop condition makes it more difficult to stop the fan than the first fan stop condition.
  • the modified example 1C is a control during the dehumidifying operation as in the modified example 1A.
  • the humidity in the room where the dehumidification operation is stopped is set to 30%.
  • the second fan stop condition is relaxed as compared with the first fan stop condition when the air is not supplied.
  • the gas sensor 15 detects that the CO 2 gas concentration in the room has risen above the first threshold value C1 while the indoor fan 12 is stopped in the thermo-off state.
  • the control unit 16 rotates the air supply fan 31 to start supplying air, and at the same time, rotates the indoor fan 12. By rotating the indoor fan 12, the control unit 16 makes the gas concentration more accurately evaluated by the gas sensor 15 and can supply air more appropriately.
  • the gas sensor may be a sensor that measures another gas.
  • the gas sensor is a sensor that measures VOCs (volatile organic compounds).
  • the VOC is any one of formaldehyde, toluene, xylene, ethylbenzene, styrene, acetaldehyde, or a combination thereof.
  • gas sensor may be an IAQ (indoor air quality) sensor.
  • the air conditioner 1 of the first embodiment has an air supply function.
  • the air conditioner may further have a humidifying function.
  • the air conditioner 1 of the modified example 1D has a humidification path shared with the air supply path 3.
  • the air conditioner 1 on the 1st floor of the modified example takes in moisture from the outside air in the outdoor unit 20.
  • the taken-in water is mixed with the outside air in the outdoor air supply pipe 33, and blown out from the indoor unit 10 into the room via the air supply path 3.
  • the air in the room can be humidified. If necessary, the humidified air can be heated by the indoor heat exchanger 14.
  • the air conditioner 1 on the 1st floor of the modified example can be used by switching between humidification and simple air supply by switching whether or not to include moisture in the outside air.
  • the indoor unit 10 of the air conditioning device 1 of the first embodiment includes a gas sensor 15 inside the casing 11.
  • the gas sensor 15a is arranged apart from the casing 11 as shown in FIG.
  • the gas sensor 15a is connected to the control unit 16a by wire or wirelessly.
  • the configuration of the other air conditioner 1a is the same as that of the air conditioner 1 of the first embodiment.
  • the indoor fan 12 Continue to rotate.
  • the air in the room can be agitated, and the fresh outside air can be sufficiently supplied to the user even if the user is away from the outside air supply unit in the room.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)
  • Ventilation (AREA)

Abstract

De manière classique, même des climatiseurs capables de ventiler (apporter de l'air à) des pièces sont susceptibles de ne pas parvenir à apporter une quantité adéquate d'air frais à un utilisateur si la position de l'utilisateur et la position de l'unité de ventilation sont éloignées l'une de l'autre dans une pièce. La présente unité intérieure (10) pour climatiseur (1) est pourvue : d'un boîtier (11); d'un ventilateur intérieur (12); d'un trajet d'introduction d'air (P0) pour introduire de l'air extérieur dans une pièce; d'un capteur de gaz (15) pour mesurer la concentration d'un gaz spécifique à l'intérieur d'une pièce; et d'une unité de commande (16). L'unité de commande (16) amène le ventilateur intérieur (12) à tourner pendant que l'air extérieur est introduit dans la pièce par l'intermédiaire du trajet d'introduction d'air (P0).
PCT/JP2020/024404 2019-06-28 2020-06-22 Unité intérieure de climatiseur et climatiseur WO2020262300A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202080046595.8A CN114051574A (zh) 2019-06-28 2020-06-22 空调装置的室内单元以及空调装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019122177A JP6939847B2 (ja) 2019-06-28 2019-06-28 空気調和装置の室内ユニットおよび空気調和装置
JP2019-122177 2019-06-28

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WO2020262300A1 true WO2020262300A1 (fr) 2020-12-30

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