WO2021054287A1 - 空調室内機 - Google Patents
空調室内機 Download PDFInfo
- Publication number
- WO2021054287A1 WO2021054287A1 PCT/JP2020/034723 JP2020034723W WO2021054287A1 WO 2021054287 A1 WO2021054287 A1 WO 2021054287A1 JP 2020034723 W JP2020034723 W JP 2020034723W WO 2021054287 A1 WO2021054287 A1 WO 2021054287A1
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- WIPO (PCT)
- Prior art keywords
- air
- indoor unit
- mode
- wide mode
- control unit
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
- F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
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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
- F24F1/0059—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
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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
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
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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
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
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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
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/72—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
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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
- F24F11/72—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
- F24F11/755—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 for cyclical variation of air flow rate or air velocity
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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
- F24F11/72—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
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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
- F24F11/72—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
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
-
- 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
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- 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
- This disclosure relates to an air conditioning indoor unit.
- Patent Document 1 a circulation airflow or a vertical airflow is used as an airflow that evenly air-conditions the entire room without the person feeling the wind, in order to prevent the wind of the air conditioner indoor unit from causing a draft feeling to the person.
- a circulation airflow or a vertical airflow is used as an airflow that evenly air-conditions the entire room without the person feeling the wind, in order to prevent the wind of the air conditioner indoor unit from causing a draft feeling to the person.
- the air-conditioning indoor unit of Patent Document 1 performs air-conditioning by circulating airflow throughout the room, it is not suitable for the user to immediately warm or cool the body. Further, in order to evenly air-condition the entire room by the air-conditioning indoor unit of Patent Document 1, there are restrictions on the floor plan, furniture arrangement, installation location of the air-conditioning indoor unit, and the like. Further, in the air-conditioning indoor unit of Patent Document 1, when the air-conditioning load is high as in the start of operation, the difference between the suction temperature (room temperature) and the blow-out temperature becomes large, and as a result, the user feels a draft. Was inevitable.
- the purpose of the present disclosure is to enable the user's body to be immediately warmed or cooled while suppressing the draft feeling even when the air conditioning load is high.
- the first aspect of the present disclosure is an air-conditioning indoor unit installed in an air-conditioned space and configured to be able to change the direction of the air flow blown out from the outlet (15), and can be switched between a normal mode and a wide mode.
- the control unit (40) switches to the wide mode, and in the wide mode, the air flow in the air conditioning target space reaches.
- the air-conditioning indoor unit is characterized in that the range is expanded at least in the vertical direction as compared with the normal mode.
- the blowout temperature when the air conditioning load becomes high, by switching to the wide mode, the blowout temperature is brought closer to the suction temperature than in the normal mode to suppress the draft feeling, and the user's body is immediately warmed by the widened airflow. It can be chilled or chilled.
- a second aspect of the present disclosure further includes, in the first aspect, a fan (14) that sucks air from the air-conditioned space and blows the air into the air-conditioned space, and the control unit (40) is said.
- the air-conditioning indoor unit is characterized in that the rotation speed of the fan (14) is higher than that before the start of the wide mode.
- the blowing speed can be maintained at the same level as in the normal mode.
- a third aspect of the present disclosure is characterized in that, in the first or second aspect, the control unit (40) makes the difference between the suction temperature and the blowout temperature smaller in the wide mode than in the normal mode. It is an air-conditioning indoor unit.
- the third aspect it is possible to suppress the draft feeling as compared with the normal mode while maintaining the blowing speed without increasing the air conditioning capacity.
- a fourth aspect of the present disclosure is that in any one of the first to third aspects, the control unit (40) switches to the normal mode when the wide mode continues for a predetermined time or longer during cooling. It is a characteristic air-conditioning indoor unit.
- control unit (40) is a person inside and outside the range reached by the airflow in the wide mode in the air-conditioned space. It is an air-conditioning indoor unit characterized by switching between the normal mode and the wide mode based on the presence or absence.
- appropriate air conditioning can be performed based on the presence state of a person in the air conditioning target space.
- a sixth aspect of the present disclosure is a heat exchanger that adjusts the temperature of the air by exchanging heat with the air sucked from the air-conditioned space in any one of the first to fifth aspects. (13) is further provided, and the control unit (40) lowers the temperature of at least a part of the heat exchanger (13) to be lower than the dew point temperature of the air-conditioned space in the wide mode during cooling. It is an air-conditioning indoor unit characterized by.
- cooling can be performed while dehumidifying.
- a seventh aspect of the present disclosure is, in any one of the first to sixth aspects, the air conditioning chamber, wherein the control unit (40) changes the blowing speed of the air flow in the wide mode. It is a machine.
- an air flow similar to a comfortable natural wind can be blown out.
- FIG. 1 is a cross-sectional view of the air conditioner indoor unit according to the embodiment when the operation is stopped.
- FIG. 2 is a cross-sectional view of the air conditioner indoor unit according to the embodiment during operation in the top-blowing mode.
- FIG. 3 is a cross-sectional view of the air conditioner indoor unit according to the embodiment during operation in the oblique blowing mode.
- FIG. 4 is a cross-sectional view of the air conditioner indoor unit according to the embodiment during operation in the wide mode.
- FIG. 5 is a cross-sectional view of the air conditioner indoor unit according to the embodiment during operation in the underblow mode.
- FIG. 6 is a diagram showing the difference between the wide mode and the normal mode in the air conditioner indoor unit according to the embodiment.
- FIG. 7 is a diagram showing an example of the wind speed distribution of the airflow blown out in the wide mode in the air conditioner indoor unit according to the embodiment.
- FIG. 8 is a diagram showing an example of the wind speed distribution of the airflow blown out in the normal mode in the air conditioner indoor unit according to the embodiment.
- FIG. 9 is a cross-sectional view of the air conditioner indoor unit according to the modified example during operation in the wide mode.
- FIG. 1 is a cross-sectional view of the air-conditioning indoor unit (10) of the present embodiment when the operation is stopped
- FIG. 2 is a cross-sectional view of the air-conditioning indoor unit (10) when the operation is stopped.
- the air-conditioning indoor unit (10) is a wall-mounted type installed on the side wall of the air-conditioning target space.
- the air-conditioning indoor unit (10) mainly includes a main body casing (11), a heat exchanger (13), a fan (14), a bottom frame (16), and a control unit (40).
- the air conditioner indoor unit (10) is configured so that the direction of the airflow blown out from the outlet (15) can be changed.
- the main body casing (11) has a top surface portion (11a), a front panel (11b), a back surface plate (11c), and a bottom surface plate (11d).
- a heat exchanger (13), a fan (14), a bottom frame (16), a control unit (40), etc. are housed inside the main body casing (11).
- the top surface (11a) is located above the main body casing (11).
- a suction port (not shown) is provided on the front portion of the top surface portion (11a).
- the front panel (11b) constitutes the front part of the air conditioning indoor unit (10) and has a flat shape without a suction port.
- the upper end of the front panel (11b) is rotatably supported by the top surface (11a), which allows the front panel (11b) to be hinged.
- the heat exchanger (13) and fan (14) are attached to the bottom frame (16).
- the heat exchanger (13) regulates the temperature of the air by exchanging heat with the passing air.
- the heat exchanger (13) has an inverted V-shape in which both ends are bent downward in a side view, and a fan (14) is located below the heat exchanger (13).
- the fan (14) is, for example, a cross-flow fan, and the air taken in from the room is passed through the heat exchanger (13) and blown out into the room.
- the bottom plate (11d) is provided with an outlet (15).
- the outlet (15) is a rectangular opening having a long side in the horizontal direction (direction orthogonal to the paper surface in FIG. 1).
- the first wind direction adjusting plate (hereinafter, also referred to as blown air) that changes the direction of the airflow (hereinafter, also referred to as blown air) blown out from the blowout port (15) along the long side of the blowout port (15) on the back plate (11c) side. 31) is rotatably attached.
- the first wind direction adjusting plate (31) may have a length similar to that of the outlet (15) and may be composed of an undivided single plate.
- the first wind direction adjusting plate (31) is driven by a motor (not shown), and can not only change the direction of the blown air but also open and close the blowout port (15).
- the first wind direction adjusting plate (31) can take a plurality of postures having different inclination angles.
- a second wind direction adjustment plate (32) is provided along the long side of the air outlet (15) on the front panel (11b) side.
- the second wind direction adjusting plate (32) may have a length similar to that of the outlet (15) and may be composed of an undivided single plate.
- the second wind direction adjusting plate (32) can take a plurality of postures having different inclination angles in the front-rear direction depending on a motor (not shown).
- the second wind direction adjusting plate (32) is accommodated in the accommodating portion (130) provided on the bottom plate (11d) when the operation is stopped.
- the outlet (15) is connected to the inside of the main body casing (11) by the outlet flow path (18).
- the blowout flow path (18) is formed from the blowout port (15) along the back side scroll (17) of the bottom frame (16).
- the rear scroll (17) is a partition wall forming a part of the bottom frame (16) and is curved so as to face the fan (14).
- the end (F) of the rear scroll (17) is located near the periphery of the outlet (15).
- the main body casing (11) is provided with a front side scroll (19) so as to face the back side scroll (17) with the blowout flow path (18) interposed therebetween.
- the indoor air is sucked into the fan (14) from the suction port of the top surface (11a) via the heat exchanger (13) by the operation of the fan (14), and blows out from the fan (14) to the outlet flow path (18). After that, it is blown out from the outlet (15).
- the air passing through the blowout flow path (18) travels along the rear side scroll (17) and is sent in the tangential direction of the end (F) of the rear side scroll (17).
- the control unit (40) is located, for example, on the side of the heat exchanger (13) and the fan (14) when the main body casing (11) is viewed from the front panel (11b) side.
- the control unit (40) switches the blowout mode described later, controls the rotation speed of the fan (14), controls the operation of the first wind direction adjusting plate (31) and the second wind direction adjusting plate (32), and heat exchanger (13). Temperature control etc.
- a vertical wind direction adjusting plate may be provided closer to the fan (14) than the first wind direction adjusting plate (31) in the blowout flow path (18).
- the vertical wind direction adjusting plate has a plurality of blade pieces and a connecting rod for connecting the plurality of blade pieces.
- the plurality of blade pieces swing left and right around a state perpendicular to the longitudinal direction by horizontally reciprocating the connecting rod along the longitudinal direction of the outlet (15) by a motor (not shown). To do.
- a rotation shaft (311) of the first wind direction adjusting plate (31) is provided on the back plate (11c) side (position below the rear scroll (17)) on the periphery of the outlet (15).
- the root portion of the first wind direction adjusting plate (31) and the rotating shaft (311) are connected at a predetermined interval.
- the rotating shaft (311) is connected to the rotating shaft of a motor (not shown) fixed to the main body casing (11).
- the tip of the first wind direction adjusting plate (31) By rotating the rotating shaft (311) counterclockwise in the front view of FIG. 1, the tip of the first wind direction adjusting plate (31) operates so as to move away from the outlet (15). ) Is opened. On the contrary, when the rotation shaft (311) rotates clockwise in the front view of FIG. 1, the tip of the first wind direction adjusting plate (31) operates so as to approach the outlet (15). Close (15).
- the blown air blown out from the outlet (15) generally reaches the inner surface (31b) of the first wind direction adjusting plate (31). It flows along. That is, the direction of the airflow blown out along the tangential direction of the end (F) of the rear scroll (17) is changed by the first wind direction adjusting plate (31).
- the outer surface (32a) of the second wind direction adjusting plate (32) is on an extension of the outer surface of the bottom plate (11d). It is finished like.
- the inner surface (32b) of the second wind direction adjusting plate (32) is finished along the surface of the accommodating portion (130).
- a rotation shaft (321) of the second wind direction adjusting plate (32) is provided on the front panel (11b) side (near the end of the front scroll (19)) on the periphery of the outlet (15). That is, the second wind direction adjusting plate (32) is provided so as to be continuous with the front scroll (19). The root portion of the second wind direction adjusting plate (32) and the rotating shaft (321) are connected.
- the rotating shaft (321) is connected to the rotating shaft of a motor (not shown) fixed to the main body casing (11).
- the tip of the second wind direction adjusting plate (32) is separated from the accommodating portion (130) by rotating the rotating shaft (321) counterclockwise in the front view of FIG. On the contrary, by rotating the rotation shaft (321) clockwise in the front view of FIG. 1, the tip of the second wind direction adjusting plate (32) approaches the accommodating portion (130), and finally the accommodating portion (120). It is housed in 130).
- the air conditioner indoor unit (10) controls the first wind direction adjusting plate (31), the second wind direction adjusting plate (32), etc. in any of the cooling operation, the heating operation, the dehumidifying operation, the humidifying operation, and the blowing operation.
- each blowing mode of "top blowing mode”, “diagonal blowing mode”, “wide mode” and “bottom blowing mode” can be switched between each other.
- top blow mode may be collectively referred to as "normal mode”.
- type of blowing mode and the blowing direction can be selected by the user via a remote controller or the like, or can be automatically set by the control unit (40).
- FIGS. 2 to 5 are cross-sectional views when the air conditioning indoor unit (10) is operated in the "top blow mode”, “diagonal blow mode”, “wide mode”, and “bottom blow mode”, respectively.
- the control unit (40) reaches a position where the inner surface (31b) of the first wind direction adjusting plate (31) faces slightly diagonally downward from the horizontal direction.
- the first wind direction adjusting plate (31) is rotated, and the second wind direction adjusting plate (32a) is directed to a position where the outer surface (32a) of the second wind direction adjusting plate (32) faces slightly diagonally upward from the horizontal direction. 32) is rotated.
- the airflow blown out from the outlet (15) passes between the first wind direction adjusting plate (31) and the second wind direction adjusting plate (32), and travels along the ceiling of the air-conditioned space, and is indoors. It becomes a circulation air flow that circulates throughout.
- the inner surface (31b) of the first wind direction adjusting plate (31) is approximately the end (F) of the rear scroll (17).
- the first wind direction adjusting plate (31) is rotated to a position facing the tangential direction of, and the second wind direction adjusting is adjusted to a position where the outer surface (32a) of the second wind direction adjusting plate (32) faces approximately in the horizontal direction. Rotate the plate (32).
- the airflow blown out from the outlet (15) passes between the first wind direction adjusting plate (31) and the second wind direction adjusting plate (32), and proceeds diagonally downward as it is.
- the amount of blown air can be maximized.
- the inner surface (31b) of the first wind direction adjusting plate (31) is tangent to the end (F) of the rear scroll (17).
- the first wind direction adjusting plate (31) is rotated to a position slightly downward from the direction
- the outer surface (32a) of the second wind direction adjusting plate (32) is slightly diagonally downward from the horizontal direction.
- the second wind direction adjusting plate (32) is rotated to a position facing the direction.
- the first wind direction adjusting plate (31) expands the airflow downward
- the second wind direction adjusting plate (32) expands the airflow upward.
- a first wind direction adjusting plate (31) and a second wind direction adjusting plate (32) are provided so that airflow can pass through the surface (31a) side and the inner surface (32b) side of the second wind direction adjusting plate (32). May be good.
- the inner surface (31b) of the first wind direction adjusting plate (31) is closer to the back plate (11c) side than the vertical downward direction.
- the first wind direction adjusting plate (31) is rotated to a position facing a slightly tilted direction
- the outer surface (32a) of the second wind direction adjusting plate (32) is closer to the back plate (11c) than the vertically downward direction.
- the second wind direction adjusting plate (32) is rotated to a position facing a slightly tilted direction.
- the airflow blown out from the outlet (15) passes between the first wind direction adjusting plate (31) and the second wind direction adjusting plate (32), and travels along the side wall of the air-conditioned space, and is indoors. It becomes a circulation air flow that circulates throughout.
- FIG. 6 is a diagram showing the difference between the “wide mode” and the “normal mode (“diagonal blowing mode”)” in the air conditioning indoor unit (10).
- the air-conditioning indoor unit (10) is installed so that the position of the air-conditioning outlet (15) is at a height of 2 m from the floor surface in the air-conditioned space, and is 1 m ahead of the air-conditioning outlet (15). Assuming that a person with a height of 1.6 m is standing in the above position, the air blown out only to the upper body of the person in the "normal mode".
- the range that the blown air reaches is expanded in the vertical direction compared to the "normal mode", so that the blown air can be applied to the whole body of the person.
- the reference height range is a range of 1600 mm in height from the floor surface at a position separated from the outlet (15) by an arbitrary distance within a range of 1000 mm or more and 2000 mm or less.
- the upper range is located in the first range, the lower range is located in the second range, and the center is located in the center.
- the range is the third range (3)
- the air-conditioning indoor unit (10) is provided on the side wall of the air-conditioning target space so that the center of the air outlet (15) is located 2000 mm above the floor surface.
- the average wind speed in the first range and the average wind speed in the second range are substantially the same, and the average wind speed in the third range is less than 1.5 times the average wind speed in the first range.
- the state of the blown air in the "wide mode” is achieved in a range of at least 1000 mm or more along the direction parallel to the long side of the blowout port (15).
- the average wind speed in the third range is more preferably 0.5 times or more and less than 1.1 times the average wind speed in the first range.
- the average wind speed in the reference height range may be 0.5 m / s or more.
- the width of the outlet (15) may be 150 mm or less.
- the ratio of the turbulent flow region to the entire blown air immediately after being blown out from the blowout port (15) is preferably less than 30%.
- FIG. 7 is a diagram showing an example of the wind speed distribution of the airflow blown out in the “wide mode” in the air conditioning indoor unit (10)
- FIG. 8 is a diagram showing an example of the wind speed distribution of the airflow blown out in the “normal mode” in the air conditioning indoor unit (10). It is a figure which shows an example of the wind speed distribution of an air flow.
- the range of height 1600 mm from the floor surface at a position 1000 mm forward from the outlet (15) is defined as the above-mentioned "reference height range", and the outlet (15) is used.
- the average wind speed in the reference height range is 0.76 m / s
- the average wind speeds in the first to third ranges are 0.84 m / s, 0.85 m / s, and 0.61 m, respectively. / S. Therefore, the average wind speed in the first range (0.84 m / s) and the average wind speed in the second range (0.85 m / s) are substantially the same as each other, and the average wind speed in the first range (0.84 m / s). ),
- the average wind speed (0.61 m / s) in the third range is about 0.73 times, which is less than 1.5 times. That is, the "wide mode" has been achieved.
- the average wind speed in the reference height range is 1.15 m / s
- the average wind speeds in the first to third ranges are 0.97 m / s and 0.74 m / s, respectively. It is .64 m / s. Therefore, the average wind speed in the first range (0.97 m / s) and the average wind speed in the second range (0.74 m / s) are different by 0.2 m / s or more, and the average wind speed in the first range (0.97 m / s) is different.
- the average wind speed (1.64 m / s) in the third range is about 1.69 times, which exceeds 1.5 times, with respect to 0.97 m / s). That is, it is not "wide mode".
- the "wide mode” has a larger airflow area (the range through which the blown air passes in the height direction)
- the "wide mode” has a larger air volume (blowout air volume), while the temperature of the blown air (hereinafter referred to as "wide mode”).
- the difference between the "blowing temperature”) and the suction temperature (that is, the room temperature) becomes smaller.
- the "wide mode” for example, it is possible to suppress a decrease in the sensible temperature due to a draft feeling during cooling, and to further improve the feeling of comfort.
- the difference between the set temperature of the air-conditioning indoor unit (10) and the suction temperature becomes large (for example, 3), for example, when the operation of the air-conditioning indoor unit (10) is started or when the set temperature is changed.
- the control unit (40) switches to the "wide mode" which is efficient in terms of air conditioning capacity.
- control unit (40) may increase the rotation speed of the fan (14) in order to suppress a decrease in the wind speed of the blown air. Further, when switching to the "wide mode", the control unit (40) reduces the difference between the suction temperature and the blowout temperature as compared with the "normal mode", or makes the difference between the suction temperature and the blowout temperature smaller. In order to reduce the temperature to a predetermined value or less, the air conditioning capacity may be controlled, for example, the rotation speed of the compressor in the outdoor unit (not shown) or the opening degree of the electric valve may be adjusted.
- the airflow area is expanded by using the Coanda effect, so that the airflow area is on the inner surface (31b) of the first wind direction adjusting plate (31) and the outer surface of the second wind direction adjusting plate (32). Airflow separation is likely to occur on (32a). Therefore, during cooling, the cold air and the room temperature air come into contact with each other on the inner surface (31b) of the first wind direction adjusting plate (31) and on the outer surface (32a) of the second wind direction adjusting plate (32), resulting in dew condensation. Is likely to occur.
- control unit (40) may switch to the "normal mode” when the "wide mode” continues for a predetermined time or longer during cooling.
- the air conditioning capacity of the "normal mode” may be increased to the air conditioning capacity before switching to the "wide mode”.
- the "normal mode”, particularly the “top blow mode” and the “bottom blow mode”, are suitable for heating or cooling the entire room by the circulation airflow circulating throughout the room.
- the air-conditioning indoor unit (10), the remote controller, and the like are provided with means for detecting a person, for example, an occupancy sensor, and the control unit (40) is reached by the blown air in the "wide mode” in the air-conditioned space.
- You may switch between "normal mode” and "wide mode” based on the presence or absence of a person inside or outside the range. For example, when the number of people in the room is two or more, the "wide mode" may be switched to the "normal mode”. Further, if there are people only in the "range”, the mode may be switched to the "wide mode", and if there are people in both the "range” and the “other range", the mode may be switched to the "normal mode”. Further, when the number of people in the room decreases, the mode may be switched from the "normal mode” to the "wide mode”.
- control unit (40) may set the temperature of at least a part of the heat exchanger (13) to be lower than the dew point temperature of the air-conditioned space in the “wide mode” during cooling. ..
- control unit (40) may change the blowing speed of the air flow in the "wide mode", for example, 1 / f fluctuation or wind speed jump.
- the blowing speed of the airflow may be changed in the range of 0 to 0.5 m / s.
- the airflow in "wide mode” is an airflow that blows through not only a part of the user's body but also the whole body, so that the user's feeling of comfort is improved.
- the airflow in the "wide mode” is applied to the entire body of the user, the variation in the temperature distribution in the user's body is reduced, so that the burden on the user's body is reduced.
- the reach of the airflow is wider than in the "normal mode”, so it is less likely to be restricted by the floor plan, furniture layout, installation location of the air conditioner indoor unit (10), etc. That is, even if there is an obstacle in the room, the airflow in the "wide mode” easily goes around the obstacle, so that the temperature unevenness in the room is reduced.
- the control unit (40) increases the rotation speed of the fan (14) in the "wide mode” as compared with that before the start of the "wide mode", " Even when the airflow reach range is expanded in the "wide mode” compared to the "normal mode", the blowing speed can be maintained at the same level as in the normal mode.
- the air-conditioning indoor unit (10) of the present embodiment if the control unit (40) is smaller in the "wide mode" than in the "normal mode", which is the difference between the suction temperature and the blow-out temperature, the air-conditioning capacity is increased. It is possible to suppress the draft feeling more than in the "normal mode” while maintaining the blowing speed without any problem.
- the air conditioner indoor unit (10) of the present embodiment when the control unit (40) switches to the "normal mode” when the "wide mode” continues for a predetermined time or more during cooling, the air conditioner indoor unit is during cooling. It is possible to suppress the formation of dew condensation in (10).
- control unit (40) determines the "normal mode” based on the presence or absence of a person inside or outside the range where the blown air of the "wide mode” reaches in the air-conditioned space. By switching between "" and "wide mode", appropriate air conditioning can be performed based on the presence state of a person in the air-conditioned space.
- control unit (40) sets the temperature of at least a part of the heat exchanger (13) in the "wide mode" during cooling to the dew point temperature of the air-conditioning target space. If it is lower than, it is possible to cool while dehumidifying.
- control unit (40) when the control unit (40) fluctuates the speed of the blown air in the "wide mode", an air flow similar to a comfortable natural wind can be blown out.
- FIG. 9 is a cross-sectional view of the air-conditioning indoor unit (10) of this modified example during operation in the wide mode.
- the same components as those of the air-conditioning indoor unit (10) of the embodiment shown in FIG. 4 are designated by the same reference numerals.
- a third wind direction adjusting plate (33) is provided between the first wind direction adjusting plate (31) and the second wind direction adjusting plate (32) at the mouth (15).
- the outer surface (33a) of the third wind direction adjusting plate (33) faces the inner surface (31b) of the first wind direction adjusting plate (31), and the inner surface (33b) of the third wind direction adjusting plate (33).
- the third wind direction adjusting plate (33) may have a length similar to that of the outlet (15) and may be composed of an undivided single plate.
- a rotation shaft (331) of the third wind direction adjusting plate (33) is provided near the center of the outlet (15) in the short side direction.
- the root portion of the third wind direction adjusting plate (33) and the rotating shaft (331) are connected.
- the rotating shaft (331) is connected to the rotating shaft of a motor (not shown) fixed to the main body casing (11). With the motor, the third wind direction adjusting plate (33) can take a plurality of postures having different inclination angles in the front-rear direction.
- the tip of the third wind direction adjusting plate (33) By rotating the rotating shaft (331) counterclockwise in the front view of FIG. 1, the tip of the third wind direction adjusting plate (33) operates so as to move away from the outlet (15). On the contrary, by rotating the rotation shaft (331) clockwise in the front view of FIG. 1, the tip of the third wind direction adjusting plate (33) operates so as to approach the outlet (15).
- the curvature of the end portion of the front scroll (19) is increased in order to suppress the separation of the airflow from the front scroll (19).
- the Coanda effect is enhanced, and the third wind direction adjustment plate (33) is placed closer to the front scroll (19) than to the rear scroll (17).
- the first wind direction adjusting plate (31) is separated from the end (F) of the rear scroll (17), and the first wind direction adjusting plate is separated.
- An air flow path is provided on the outer surface (31a) side of (31).
- the control unit (40) changes the bending angle of the third wind direction adjusting plate (33) so that the airflow is divided into two at the tip of the third wind direction adjusting plate (33). Further, in order to suppress the separation of the airflow from the first wind direction adjusting plate (31), the control unit (40) sets the bending angle of the first wind direction adjusting plate (31) to, for example, "33 ° ⁇ 39 ° ⁇ 45 °". , "50 ° ⁇ 55 ° ⁇ 60 °", and the third so that the tip of the third wind direction adjustment plate (33) is located near the first wind direction adjustment plate (31). The bending angle of the wind direction adjusting plate (33) is changed.
- the same effect as that of the above-described embodiment can be obtained.
- the third wind direction adjusting plate (33) by adding the third wind direction adjusting plate (33), the airflow blown out from the outlet (15) is divided into two, which is similar to the case where two outlets are provided. Realize the configuration. Specifically, a second wind direction adjusting plate (32) is provided so as to be continuous with the front scroll (19), and a first wind direction adjusting plate is provided between the front scroll (19) and the rear scroll (17).
- the upper airflow is generated by the front side scroll (19) and the third wind direction adjusting plate (33), and the rear side scroll (17) and The lower airflow is generated by the first wind direction adjusting plate (31) and the third wind direction adjusting plate (33). This makes it possible to expand the range reached by the airflow in the air-conditioned space in the vertical direction.
- the blown air was expanded in the vertical direction by three horizontal wind direction adjusting plates (horizontal flaps), but instead, the blown air was expanded in the vertical direction by four or more horizontal flaps. May be good.
- the air conditioner indoor unit (10) has "top blowing mode”, “diagonal blowing mode”, “wide mode”, and “bottom blowing mode” as blowing modes. It may have other modes other than the above. Further, each mode such as “wide mode” may further have a plurality of submodes. Further, the range reached by the blown air in the "wide mode” in the air-conditioned space may be moved in the height direction or the lateral direction (the direction parallel to the long side of the blowout port (15)).
- the control unit (40) when the air-conditioning state by the air-conditioning indoor unit (10) is stable, in other words, when the air-conditioning load is relatively small, the control unit (40) is set to the "normal mode".
- the air conditioning capacity of "wide mode” may be lower than that of "normal mode”.
- the air-conditioning indoor unit (10) is a wall-mounted type installed on the side wall of the air-conditioning target space.
- the air-conditioning indoor unit (10) may be another type such as a ceiling-mounted type or a floor-standing type.
- this disclosure is useful for air conditioning indoor units.
- Air-conditioning indoor unit 11 Main body casing 11a Top surface 11b Front panel 11c Back plate 11d Bottom plate 13 Heat exchanger 14 Fan 15 Outlet 16 Bottom frame 17 Rear side scroll 18 Outlet flow path 19 Front side scroll 31 First wind direction adjustment plate 31a Outer surface 31b Inner surface 311 Rotating shaft 32 Second wind direction adjusting plate 32a Outer surface 32b Inner surface 321 Rotating shaft 33 Third wind direction adjusting plate 33a Outer surface 33b Inner surface 331 Rotating shaft 40 Control unit 130
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Abstract
Description
〈空調室内機の構成〉
図1は、本実施形態の空調室内機(10)の運転停止時の断面図であり、図2は、同空調室内機(10)の運転時の断面図である。
第1風向調整板(31)が吹き出し口(15)を閉じた状態において、第1風向調整板(31)の外表面(31a)は、底面板(11d)の外表面の延長上にあるように仕上げられる。第1風向調整板(31)の内表面(31b)(図2参照)も、外表面(31a)とほぼ平行になるように仕上げられる。
第2風向調整板(32)が収容部(130)に収容された状態で、第2風向調整板(32)の外表面(32a)は、底面板(11d)の外表面の延長上にあるように仕上げられる。第2風向調整板(32)の内表面(32b)は、収容部(130)の表面に沿うように仕上げられる。
空調室内機(10)は、冷房運転、暖房運転、除湿運転、加湿運転、送風運転のいづれにおいても、第1風向調整板(31)及び第2風向調整板(32)等を制御することによって、例えば、「上吹きモード」、「斜め吹きモード」、「ワイドモード」及び「下吹きモード」の各吹き出しモードを相互に切り替えることができる。
図6は、空調室内機(10)における「ワイドモード」と「通常モード(「斜め吹きモード」)」との相違を示す図である。
(1)吹き出し口(15)から前方に1000mm以上2000mm以下の範囲内の任意の距離だけ離れた位置における床面から高さ1600mmの範囲を基準高さ範囲とし、
(2)基準高さ範囲を高さ方向に三等分して得られる3つの範囲のうち、上側に位置する範囲を第1範囲、下側に位置する範囲を第2範囲、中央に位置する範囲を第3範囲とし、
(3)吹き出し口(15)の中心が床面から上方2000mmの位置となるように空調室内機(10)が空調対象空間の側壁に設けられた場合、
(4)第1範囲の平均風速と第2範囲の平均風速とが互いに略同一となり、且つ、第1範囲の平均風速に対して第3範囲の平均風速が1.5倍未満となる。
以上に説明した本実施形態の空調室内機(10)によると、「ワイドモード」では、吹き出し口(15)から吹き出される気流の到達範囲が「通常モード」よりも拡大するため、同じ空調能力及び同じ吹き出し速さで比べると、「通常モード」よりも吹き出し温度を吸い込み温度に近づけて所定の室内温度(設定温度)を達成できる。従って、運転開始時や設定温度変更時などのように空調負荷が高くなる場合には、「ワイドモード」に切り替えることによってドラフト感を抑制しながら、広がった気流によって、ユーザの体をすぐに温めたり、冷やしたりすることができる。
図9は、本変形例の空調室内機(10)のワイドモードで運転時の断面図である。尚、図9において、図4に示す前記実施形態の空調室内機(10)と同じ構成要素には同じ符号を付している。
前記実施形態及び変形例では、空調室内機(10)は、吹き出しモードとして、「上吹きモード」、「斜め吹きモード」、「ワイドモード」及び「下吹きモード」を有していたが、これら以外の他のモードをさらに有していてもよい。また、「ワイドモード」等の各モードが、さらに複数のサブモードを有していてもよい。また、空調対象空間における「ワイドモード」の吹き出し空気が到達する範囲を、高さ方向や横方向(吹き出し口(15)の長辺に平行な方向)に移動できるようにしてもよい。さらに、吹き出し口(15)が長辺方向に2つ以上の領域に区画されるように複数の垂直風向調整板を設けることよって、「ワイドモード」で吹き出される気流を横方向にも2つ以上に分割してもよい。これにより、吹き出し空気を横方向にも拡大できると共に、横方向における吹き出し空気の風速分布のバラツキを低減することができる。
11 本体ケーシング
11a 天面部
11b 前面パネル
11c 背面板
11d 底面板
13 熱交換器
14 ファン
15 吹き出し口
16 底フレーム
17 背面側スクロール
18 吹き出し流路
19 前面側スクロール
31 第1風向調整板
31a 外表面
31b 内表面
311 回動軸
32 第2風向調整板
32a 外表面
32b 内表面
321 回動軸
33 第3風向調整板
33a 外表面
33b 内表面
331 回動軸
40 制御部
130 収容部
Claims (7)
- 空調対象空間に設置され、吹き出し口(15)から吹き出される気流の向きを変更可能に構成された空調室内機であって、
通常モードとワイドモードとの切り替えを行う制御部(40)を備え、
前記制御部(40)は、空調負荷が所定値よりも高くなると、前記ワイドモードに切り替えると共に、前記ワイドモードにおいて、前記空調対象空間における前記気流が到達する範囲を前記通常モードと比べて少なくとも上下方向に拡大することを特徴とする空調室内機。 - 請求項1の空調室内機において、
前記空調対象空間から空気を吸い込み且つ当該空気を前記空調対象空間へ吹き出すファン(14)をさらに備え、
前記制御部(40)は、前記ワイドモードにおいて、当該ワイドモードの開始前と比べて、前記ファン(14)の回転数を高くすることを特徴とする空調室内機。 - 請求項1又は2の空調室内機において、
前記制御部(40)は、前記ワイドモードにおいて、吸い込み温度と吹き出し温度との差を前記通常モードと比べて小さくすることを特徴とする空調室内機。 - 請求項1~3のいずれか1項の空調室内機において、
前記制御部(40)は、冷房中に前記ワイドモードが所定時間以上続いた場合、前記通常モードに切り替えることを特徴とする空調室内機。 - 請求項1~4のいずれか1項の空調室内機において、
前記制御部(40)は、前記空調対象空間における前記ワイドモードの前記気流が到達する範囲の内外での人の存否に基づいて、前記通常モードと前記ワイドモードとの切り替えを行うことを特徴とする空調室内機。 - 請求項1~5のいずれか1項の空調室内機において、
前記空調対象空間から吸い込んだ空気との間で熱交換を行うことにより、当該空気の温度を調節する熱交換器(13)をさらに備え、
前記制御部(40)は、冷房中の前記ワイドモードにおいて、前記熱交換器(13)の少なくとも一部の温度を、前記空調対象空間の露点温度よりも低くすることを特徴とする空調室内機。 - 請求項1~6のいずれか1項の空調室内機において、
前記制御部(40)は、前記ワイドモードにおいて、前記気流の吹き出し速さを変動させることを特徴とする空調室内機。
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EP20865540.7A EP4001790B1 (en) | 2019-09-17 | 2020-09-14 | Indoor unit for air conditioner |
AU2020348064A AU2020348064B2 (en) | 2019-09-17 | 2020-09-14 | Indoor unit for air conditioner |
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- 2020-09-14 JP JP2020153536A patent/JP6947266B2/ja active Active
- 2020-09-14 AU AU2020348064A patent/AU2020348064B2/en active Active
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EP4001790B1 (en) | 2024-03-20 |
EP4001790A1 (en) | 2022-05-25 |
EP4001790A4 (en) | 2022-09-14 |
US11493231B2 (en) | 2022-11-08 |
AU2020348064A1 (en) | 2022-04-07 |
US20220178581A1 (en) | 2022-06-09 |
JP2021050903A (ja) | 2021-04-01 |
ES2976474T3 (es) | 2024-08-01 |
AU2020348064B2 (en) | 2023-05-25 |
CN114391080A (zh) | 2022-04-22 |
JP6947266B2 (ja) | 2021-10-13 |
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